diff options
Diffstat (limited to 'drivers/staging/mei')
| -rw-r--r-- | drivers/staging/mei/Kconfig | 28 | ||||
| -rw-r--r-- | drivers/staging/mei/Makefile | 11 | ||||
| -rw-r--r-- | drivers/staging/mei/TODO | 10 | ||||
| -rw-r--r-- | drivers/staging/mei/hw.h | 332 | ||||
| -rw-r--r-- | drivers/staging/mei/init.c | 735 | ||||
| -rw-r--r-- | drivers/staging/mei/interface.c | 428 | ||||
| -rw-r--r-- | drivers/staging/mei/interface.h | 76 | ||||
| -rw-r--r-- | drivers/staging/mei/interrupt.c | 1590 | ||||
| -rw-r--r-- | drivers/staging/mei/iorw.c | 590 | ||||
| -rw-r--r-- | drivers/staging/mei/main.c | 1237 | ||||
| -rw-r--r-- | drivers/staging/mei/mei-amt-version.c | 481 | ||||
| -rw-r--r-- | drivers/staging/mei/mei.h | 110 | ||||
| -rw-r--r-- | drivers/staging/mei/mei.txt | 215 | ||||
| -rw-r--r-- | drivers/staging/mei/mei_dev.h | 428 | ||||
| -rw-r--r-- | drivers/staging/mei/wd.c | 379 |
15 files changed, 0 insertions, 6650 deletions
diff --git a/drivers/staging/mei/Kconfig b/drivers/staging/mei/Kconfig deleted file mode 100644 index 47d78a7..0000000 --- a/drivers/staging/mei/Kconfig +++ /dev/null @@ -1,28 +0,0 @@ -config INTEL_MEI - tristate "Intel Management Engine Interface (Intel MEI)" - depends on X86 && PCI && EXPERIMENTAL && WATCHDOG_CORE - help - The Intel Management Engine (Intel ME) provides Manageability, - Security and Media services for system containing Intel chipsets. - if selected /dev/mei misc device will be created. - - Supported Chipsets are: - 7 Series Chipset Family - 6 Series Chipset Family - 5 Series Chipset Family - 4 Series Chipset Family - Mobile 4 Series Chipset Family - ICH9 - 82946GZ/GL - 82G35 Express - 82Q963/Q965 - 82P965/G965 - Mobile PM965/GM965 - Mobile GME965/GLE960 - 82Q35 Express - 82G33/G31/P35/P31 Express - 82Q33 Express - 82X38/X48 Express - - For more information see - <http://software.intel.com/en-us/manageability/> diff --git a/drivers/staging/mei/Makefile b/drivers/staging/mei/Makefile deleted file mode 100644 index 57168db..0000000 --- a/drivers/staging/mei/Makefile +++ /dev/null @@ -1,11 +0,0 @@ -# -# Makefile - Intel Management Engine Interface (Intel MEI) Linux driver -# Copyright (c) 2010-2011, Intel Corporation. -# -obj-$(CONFIG_INTEL_MEI) += mei.o -mei-objs := init.o -mei-objs += interrupt.o -mei-objs += interface.o -mei-objs += iorw.o -mei-objs += main.o -mei-objs += wd.o diff --git a/drivers/staging/mei/TODO b/drivers/staging/mei/TODO deleted file mode 100644 index fc26601..0000000 --- a/drivers/staging/mei/TODO +++ /dev/null @@ -1,10 +0,0 @@ -TODO: - - Cleanup and split the timer function -Upon Unstaging: - - move mei.h to include/linux/mei.h - - Documentation/ioctl/ioctl-number.txt - - move mei.txt under Documentation/mei/ - - move mei-amt-version.c under Documentation/mei - - add hostprogs-y for mei-amt-version.c - - drop mei_version.h - - Updated MAINTAINERS diff --git a/drivers/staging/mei/hw.h b/drivers/staging/mei/hw.h deleted file mode 100644 index 24c4c96..0000000 --- a/drivers/staging/mei/hw.h +++ /dev/null @@ -1,332 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - -#ifndef _MEI_HW_TYPES_H_ -#define _MEI_HW_TYPES_H_ - -#include <linux/uuid.h> - -/* - * Timeouts - */ -#define MEI_INTEROP_TIMEOUT (HZ * 7) -#define MEI_CONNECT_TIMEOUT 3 /* at least 2 seconds */ - -#define CONNECT_TIMEOUT 15 /* HPS definition */ -#define INIT_CLIENTS_TIMEOUT 15 /* HPS definition */ - -#define IAMTHIF_STALL_TIMER 12 /* seconds */ -#define IAMTHIF_READ_TIMER 10000 /* ms */ - -/* - * Internal Clients Number - */ -#define MEI_WD_HOST_CLIENT_ID 1 -#define MEI_IAMTHIF_HOST_CLIENT_ID 2 - -/* - * MEI device IDs - */ -#define MEI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */ -#define MEI_DEV_ID_82G35 0x2984 /* 82G35 Express */ -#define MEI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */ -#define MEI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */ - -#define MEI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */ -#define MEI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */ - -#define MEI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */ -#define MEI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */ -#define MEI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */ -#define MEI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */ -#define MEI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */ - -#define MEI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */ -#define MEI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */ -#define MEI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */ -#define MEI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */ -#define MEI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */ - -#define MEI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */ -#define MEI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */ -#define MEI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */ -#define MEI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */ - -#define MEI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */ -#define MEI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */ -#define MEI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */ -#define MEI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */ - -#define MEI_DEV_ID_IBXPK_1 0x3B64 /* Calpella */ -#define MEI_DEV_ID_IBXPK_2 0x3B65 /* Calpella */ - -#define MEI_DEV_ID_CPT_1 0x1C3A /* Cougerpoint */ -#define MEI_DEV_ID_PBG_1 0x1D3A /* PBG */ - -#define MEI_DEV_ID_PPT_1 0x1E3A /* Pantherpoint PPT */ -#define MEI_DEV_ID_PPT_2 0x1CBA /* Pantherpoint PPT */ -#define MEI_DEV_ID_PPT_3 0x1DBA /* Pantherpoint PPT */ - - -/* - * MEI HW Section - */ - -/* MEI registers */ -/* H_CB_WW - Host Circular Buffer (CB) Write Window register */ -#define H_CB_WW 0 -/* H_CSR - Host Control Status register */ -#define H_CSR 4 -/* ME_CB_RW - ME Circular Buffer Read Window register (read only) */ -#define ME_CB_RW 8 -/* ME_CSR_HA - ME Control Status Host Access register (read only) */ -#define ME_CSR_HA 0xC - - -/* register bits of H_CSR (Host Control Status register) */ -/* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */ -#define H_CBD 0xFF000000 -/* Host Circular Buffer Write Pointer */ -#define H_CBWP 0x00FF0000 -/* Host Circular Buffer Read Pointer */ -#define H_CBRP 0x0000FF00 -/* Host Reset */ -#define H_RST 0x00000010 -/* Host Ready */ -#define H_RDY 0x00000008 -/* Host Interrupt Generate */ -#define H_IG 0x00000004 -/* Host Interrupt Status */ -#define H_IS 0x00000002 -/* Host Interrupt Enable */ -#define H_IE 0x00000001 - - -/* register bits of ME_CSR_HA (ME Control Status Host Access register) */ -/* ME CB (Circular Buffer) Depth HRA (Host Read Access) - host read only -access to ME_CBD */ -#define ME_CBD_HRA 0xFF000000 -/* ME CB Write Pointer HRA - host read only access to ME_CBWP */ -#define ME_CBWP_HRA 0x00FF0000 -/* ME CB Read Pointer HRA - host read only access to ME_CBRP */ -#define ME_CBRP_HRA 0x0000FF00 -/* ME Reset HRA - host read only access to ME_RST */ -#define ME_RST_HRA 0x00000010 -/* ME Ready HRA - host read only access to ME_RDY */ -#define ME_RDY_HRA 0x00000008 -/* ME Interrupt Generate HRA - host read only access to ME_IG */ -#define ME_IG_HRA 0x00000004 -/* ME Interrupt Status HRA - host read only access to ME_IS */ -#define ME_IS_HRA 0x00000002 -/* ME Interrupt Enable HRA - host read only access to ME_IE */ -#define ME_IE_HRA 0x00000001 - -/* - * MEI Version - */ -#define HBM_MINOR_VERSION 0 -#define HBM_MAJOR_VERSION 1 -#define HBM_TIMEOUT 1 /* 1 second */ - -/* Host bus message command opcode */ -#define MEI_HBM_CMD_OP_MSK 0x7f -/* Host bus message command RESPONSE */ -#define MEI_HBM_CMD_RES_MSK 0x80 - -/* - * MEI Bus Message Command IDs - */ -#define HOST_START_REQ_CMD 0x01 -#define HOST_START_RES_CMD 0x81 - -#define HOST_STOP_REQ_CMD 0x02 -#define HOST_STOP_RES_CMD 0x82 - -#define ME_STOP_REQ_CMD 0x03 - -#define HOST_ENUM_REQ_CMD 0x04 -#define HOST_ENUM_RES_CMD 0x84 - -#define HOST_CLIENT_PROPERTIES_REQ_CMD 0x05 -#define HOST_CLIENT_PROPERTIES_RES_CMD 0x85 - -#define CLIENT_CONNECT_REQ_CMD 0x06 -#define CLIENT_CONNECT_RES_CMD 0x86 - -#define CLIENT_DISCONNECT_REQ_CMD 0x07 -#define CLIENT_DISCONNECT_RES_CMD 0x87 - -#define MEI_FLOW_CONTROL_CMD 0x08 - -/* - * MEI Stop Reason - * used by hbm_host_stop_request.reason - */ -enum mei_stop_reason_types { - DRIVER_STOP_REQUEST = 0x00, - DEVICE_D1_ENTRY = 0x01, - DEVICE_D2_ENTRY = 0x02, - DEVICE_D3_ENTRY = 0x03, - SYSTEM_S1_ENTRY = 0x04, - SYSTEM_S2_ENTRY = 0x05, - SYSTEM_S3_ENTRY = 0x06, - SYSTEM_S4_ENTRY = 0x07, - SYSTEM_S5_ENTRY = 0x08 -}; - -/* - * Client Connect Status - * used by hbm_client_connect_response.status - */ -enum client_connect_status_types { - CCS_SUCCESS = 0x00, - CCS_NOT_FOUND = 0x01, - CCS_ALREADY_STARTED = 0x02, - CCS_OUT_OF_RESOURCES = 0x03, - CCS_MESSAGE_SMALL = 0x04 -}; - -/* - * Client Disconnect Status - */ -enum client_disconnect_status_types { - CDS_SUCCESS = 0x00 -}; - -/* - * MEI BUS Interface Section - */ -struct mei_msg_hdr { - u32 me_addr:8; - u32 host_addr:8; - u32 length:9; - u32 reserved:6; - u32 msg_complete:1; -} __packed; - - -struct mei_bus_message { - u8 hbm_cmd; - u8 data[0]; -} __packed; - -struct hbm_version { - u8 minor_version; - u8 major_version; -} __packed; - -struct hbm_host_version_request { - u8 hbm_cmd; - u8 reserved; - struct hbm_version host_version; -} __packed; - -struct hbm_host_version_response { - u8 hbm_cmd; - u8 host_version_supported; - struct hbm_version me_max_version; -} __packed; - -struct hbm_host_stop_request { - u8 hbm_cmd; - u8 reason; - u8 reserved[2]; -} __packed; - -struct hbm_host_stop_response { - u8 hbm_cmd; - u8 reserved[3]; -} __packed; - -struct hbm_me_stop_request { - u8 hbm_cmd; - u8 reason; - u8 reserved[2]; -} __packed; - -struct hbm_host_enum_request { - u8 hbm_cmd; - u8 reserved[3]; -} __packed; - -struct hbm_host_enum_response { - u8 hbm_cmd; - u8 reserved[3]; - u8 valid_addresses[32]; -} __packed; - -struct mei_client_properties { - uuid_le protocol_name; - u8 protocol_version; - u8 max_number_of_connections; - u8 fixed_address; - u8 single_recv_buf; - u32 max_msg_length; -} __packed; - -struct hbm_props_request { - u8 hbm_cmd; - u8 address; - u8 reserved[2]; -} __packed; - - -struct hbm_props_response { - u8 hbm_cmd; - u8 address; - u8 status; - u8 reserved[1]; - struct mei_client_properties client_properties; -} __packed; - -struct hbm_client_connect_request { - u8 hbm_cmd; - u8 me_addr; - u8 host_addr; - u8 reserved; -} __packed; - -struct hbm_client_connect_response { - u8 hbm_cmd; - u8 me_addr; - u8 host_addr; - u8 status; -} __packed; - -struct hbm_client_disconnect_request { - u8 hbm_cmd; - u8 me_addr; - u8 host_addr; - u8 reserved[1]; -} __packed; - -#define MEI_FC_MESSAGE_RESERVED_LENGTH 5 - -struct hbm_flow_control { - u8 hbm_cmd; - u8 me_addr; - u8 host_addr; - u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH]; -} __packed; - -struct mei_me_client { - struct mei_client_properties props; - u8 client_id; - u8 mei_flow_ctrl_creds; -} __packed; - - -#endif diff --git a/drivers/staging/mei/init.c b/drivers/staging/mei/init.c deleted file mode 100644 index eab711f..0000000 --- a/drivers/staging/mei/init.c +++ /dev/null @@ -1,735 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - -#include <linux/pci.h> -#include <linux/sched.h> -#include <linux/wait.h> -#include <linux/delay.h> - -#include "mei_dev.h" -#include "hw.h" -#include "interface.h" -#include "mei.h" - -const uuid_le mei_amthi_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, 0xac, - 0xa8, 0x46, 0xe0, 0xff, 0x65, - 0x81, 0x4c); - -/** - * mei_io_list_init - Sets up a queue list. - * - * @list: An instance io list structure - * @dev: the device structure - */ -void mei_io_list_init(struct mei_io_list *list) -{ - /* initialize our queue list */ - INIT_LIST_HEAD(&list->mei_cb.cb_list); -} - -/** - * mei_io_list_flush - removes list entry belonging to cl. - * - * @list: An instance of our list structure - * @cl: private data of the file object - */ -void mei_io_list_flush(struct mei_io_list *list, struct mei_cl *cl) -{ - struct mei_cl_cb *pos; - struct mei_cl_cb *next; - - list_for_each_entry_safe(pos, next, &list->mei_cb.cb_list, cb_list) { - if (pos->file_private) { - struct mei_cl *cl_tmp; - cl_tmp = (struct mei_cl *)pos->file_private; - if (mei_cl_cmp_id(cl, cl_tmp)) - list_del(&pos->cb_list); - } - } -} -/** - * mei_cl_flush_queues - flushes queue lists belonging to cl. - * - * @dev: the device structure - * @cl: private data of the file object - */ -int mei_cl_flush_queues(struct mei_cl *cl) -{ - if (!cl || !cl->dev) - return -EINVAL; - - dev_dbg(&cl->dev->pdev->dev, "remove list entry belonging to cl\n"); - mei_io_list_flush(&cl->dev->read_list, cl); - mei_io_list_flush(&cl->dev->write_list, cl); - mei_io_list_flush(&cl->dev->write_waiting_list, cl); - mei_io_list_flush(&cl->dev->ctrl_wr_list, cl); - mei_io_list_flush(&cl->dev->ctrl_rd_list, cl); - mei_io_list_flush(&cl->dev->amthi_cmd_list, cl); - mei_io_list_flush(&cl->dev->amthi_read_complete_list, cl); - return 0; -} - - - -/** - * mei_reset_iamthif_params - initializes mei device iamthif - * - * @dev: the device structure - */ -static void mei_reset_iamthif_params(struct mei_device *dev) -{ - /* reset iamthif parameters. */ - dev->iamthif_current_cb = NULL; - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = false; - dev->iamthif_ioctl = false; - dev->iamthif_state = MEI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; -} - -/** - * init_mei_device - allocates and initializes the mei device structure - * - * @pdev: The pci device structure - * - * returns The mei_device_device pointer on success, NULL on failure. - */ -struct mei_device *mei_device_init(struct pci_dev *pdev) -{ - struct mei_device *dev; - - dev = kzalloc(sizeof(struct mei_device), GFP_KERNEL); - if (!dev) - return NULL; - - /* setup our list array */ - INIT_LIST_HEAD(&dev->file_list); - INIT_LIST_HEAD(&dev->wd_cl.link); - INIT_LIST_HEAD(&dev->iamthif_cl.link); - mutex_init(&dev->device_lock); - init_waitqueue_head(&dev->wait_recvd_msg); - init_waitqueue_head(&dev->wait_stop_wd); - dev->mei_state = MEI_INITIALIZING; - dev->iamthif_state = MEI_IAMTHIF_IDLE; - dev->wd_interface_reg = false; - - - mei_io_list_init(&dev->read_list); - mei_io_list_init(&dev->write_list); - mei_io_list_init(&dev->write_waiting_list); - mei_io_list_init(&dev->ctrl_wr_list); - mei_io_list_init(&dev->ctrl_rd_list); - mei_io_list_init(&dev->amthi_cmd_list); - mei_io_list_init(&dev->amthi_read_complete_list); - dev->pdev = pdev; - return dev; -} - -/** - * mei_hw_init - initializes host and fw to start work. - * - * @dev: the device structure - * - * returns 0 on success, <0 on failure. - */ -int mei_hw_init(struct mei_device *dev) -{ - int err = 0; - int ret; - - mutex_lock(&dev->device_lock); - - dev->host_hw_state = mei_hcsr_read(dev); - dev->me_hw_state = mei_mecsr_read(dev); - dev_dbg(&dev->pdev->dev, "host_hw_state = 0x%08x, mestate = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - /* acknowledge interrupt and stop interupts */ - if ((dev->host_hw_state & H_IS) == H_IS) - mei_reg_write(dev, H_CSR, dev->host_hw_state); - - dev->recvd_msg = false; - dev_dbg(&dev->pdev->dev, "reset in start the mei device.\n"); - - mei_reset(dev, 1); - - dev_dbg(&dev->pdev->dev, "host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - /* wait for ME to turn on ME_RDY */ - if (!dev->recvd_msg) { - mutex_unlock(&dev->device_lock); - err = wait_event_interruptible_timeout(dev->wait_recvd_msg, - dev->recvd_msg, MEI_INTEROP_TIMEOUT); - mutex_lock(&dev->device_lock); - } - - if (err <= 0 && !dev->recvd_msg) { - dev->mei_state = MEI_DISABLED; - dev_dbg(&dev->pdev->dev, - "wait_event_interruptible_timeout failed" - "on wait for ME to turn on ME_RDY.\n"); - ret = -ENODEV; - goto out; - } - - if (!(((dev->host_hw_state & H_RDY) == H_RDY) && - ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA))) { - dev->mei_state = MEI_DISABLED; - dev_dbg(&dev->pdev->dev, - "host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - if (!(dev->host_hw_state & H_RDY)) - dev_dbg(&dev->pdev->dev, "host turn off H_RDY.\n"); - - if (!(dev->me_hw_state & ME_RDY_HRA)) - dev_dbg(&dev->pdev->dev, "ME turn off ME_RDY.\n"); - - printk(KERN_ERR "mei: link layer initialization failed.\n"); - ret = -ENODEV; - goto out; - } - - if (dev->version.major_version != HBM_MAJOR_VERSION || - dev->version.minor_version != HBM_MINOR_VERSION) { - dev_dbg(&dev->pdev->dev, "MEI start failed.\n"); - ret = -ENODEV; - goto out; - } - - dev->recvd_msg = false; - dev_dbg(&dev->pdev->dev, "host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - dev_dbg(&dev->pdev->dev, "ME turn on ME_RDY and host turn on H_RDY.\n"); - dev_dbg(&dev->pdev->dev, "link layer has been established.\n"); - dev_dbg(&dev->pdev->dev, "MEI start success.\n"); - ret = 0; - -out: - mutex_unlock(&dev->device_lock); - return ret; -} - -/** - * mei_hw_reset - resets fw via mei csr register. - * - * @dev: the device structure - * @interrupts_enabled: if interrupt should be enabled after reset. - */ -static void mei_hw_reset(struct mei_device *dev, int interrupts_enabled) -{ - dev->host_hw_state |= (H_RST | H_IG); - - if (interrupts_enabled) - mei_enable_interrupts(dev); - else - mei_disable_interrupts(dev); -} - -/** - * mei_reset - resets host and fw. - * - * @dev: the device structure - * @interrupts_enabled: if interrupt should be enabled after reset. - */ -void mei_reset(struct mei_device *dev, int interrupts_enabled) -{ - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - struct mei_cl_cb *cb_pos = NULL; - struct mei_cl_cb *cb_next = NULL; - bool unexpected; - - if (dev->mei_state == MEI_RECOVERING_FROM_RESET) { - dev->need_reset = true; - return; - } - - unexpected = (dev->mei_state != MEI_INITIALIZING && - dev->mei_state != MEI_DISABLED && - dev->mei_state != MEI_POWER_DOWN && - dev->mei_state != MEI_POWER_UP); - - dev->host_hw_state = mei_hcsr_read(dev); - - dev_dbg(&dev->pdev->dev, "before reset host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - mei_hw_reset(dev, interrupts_enabled); - - dev->host_hw_state &= ~H_RST; - dev->host_hw_state |= H_IG; - - mei_hcsr_set(dev); - - dev_dbg(&dev->pdev->dev, "currently saved host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - dev->need_reset = false; - - if (dev->mei_state != MEI_INITIALIZING) { - if (dev->mei_state != MEI_DISABLED && - dev->mei_state != MEI_POWER_DOWN) - dev->mei_state = MEI_RESETING; - - list_for_each_entry_safe(cl_pos, - cl_next, &dev->file_list, link) { - cl_pos->state = MEI_FILE_DISCONNECTED; - cl_pos->mei_flow_ctrl_creds = 0; - cl_pos->read_cb = NULL; - cl_pos->timer_count = 0; - } - /* remove entry if already in list */ - dev_dbg(&dev->pdev->dev, "list del iamthif and wd file list.\n"); - mei_remove_client_from_file_list(dev, - dev->wd_cl.host_client_id); - - mei_remove_client_from_file_list(dev, - dev->iamthif_cl.host_client_id); - - mei_reset_iamthif_params(dev); - dev->wd_due_counter = 0; - dev->extra_write_index = 0; - } - - dev->me_clients_num = 0; - dev->rd_msg_hdr = 0; - dev->stop = false; - dev->wd_pending = false; - - /* update the state of the registers after reset */ - dev->host_hw_state = mei_hcsr_read(dev); - dev->me_hw_state = mei_mecsr_read(dev); - - dev_dbg(&dev->pdev->dev, "after reset host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - if (unexpected) - dev_warn(&dev->pdev->dev, "unexpected reset.\n"); - - /* Wake up all readings so they can be interrupted */ - list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { - if (waitqueue_active(&cl_pos->rx_wait)) { - dev_dbg(&dev->pdev->dev, "Waking up client!\n"); - wake_up_interruptible(&cl_pos->rx_wait); - } - } - /* remove all waiting requests */ - list_for_each_entry_safe(cb_pos, cb_next, - &dev->write_list.mei_cb.cb_list, cb_list) { - list_del(&cb_pos->cb_list); - mei_free_cb_private(cb_pos); - } -} - - - -/** - * host_start_message - mei host sends start message. - * - * @dev: the device structure - * - * returns none. - */ -void mei_host_start_message(struct mei_device *dev) -{ - struct mei_msg_hdr *mei_hdr; - struct hbm_host_version_request *host_start_req; - - /* host start message */ - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_host_version_request); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - host_start_req = - (struct hbm_host_version_request *) &dev->wr_msg_buf[1]; - memset(host_start_req, 0, sizeof(struct hbm_host_version_request)); - host_start_req->hbm_cmd = HOST_START_REQ_CMD; - host_start_req->host_version.major_version = HBM_MAJOR_VERSION; - host_start_req->host_version.minor_version = HBM_MINOR_VERSION; - dev->recvd_msg = false; - if (mei_write_message(dev, mei_hdr, (unsigned char *)host_start_req, - mei_hdr->length)) { - dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n"); - dev->mei_state = MEI_RESETING; - mei_reset(dev, 1); - } - dev->init_clients_state = MEI_START_MESSAGE; - dev->init_clients_timer = INIT_CLIENTS_TIMEOUT; - return ; -} - -/** - * host_enum_clients_message - host sends enumeration client request message. - * - * @dev: the device structure - * - * returns none. - */ -void mei_host_enum_clients_message(struct mei_device *dev) -{ - struct mei_msg_hdr *mei_hdr; - struct hbm_host_enum_request *host_enum_req; - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - /* enumerate clients */ - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_host_enum_request); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - host_enum_req = (struct hbm_host_enum_request *) &dev->wr_msg_buf[1]; - memset(host_enum_req, 0, sizeof(struct hbm_host_enum_request)); - host_enum_req->hbm_cmd = HOST_ENUM_REQ_CMD; - if (mei_write_message(dev, mei_hdr, (unsigned char *)host_enum_req, - mei_hdr->length)) { - dev->mei_state = MEI_RESETING; - dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n"); - mei_reset(dev, 1); - } - dev->init_clients_state = MEI_ENUM_CLIENTS_MESSAGE; - dev->init_clients_timer = INIT_CLIENTS_TIMEOUT; - return; -} - - -/** - * allocate_me_clients_storage - allocates storage for me clients - * - * @dev: the device structure - * - * returns none. - */ -void mei_allocate_me_clients_storage(struct mei_device *dev) -{ - struct mei_me_client *clients; - int b; - - /* count how many ME clients we have */ - for_each_set_bit(b, dev->me_clients_map, MEI_CLIENTS_MAX) - dev->me_clients_num++; - - if (dev->me_clients_num <= 0) - return ; - - - if (dev->me_clients != NULL) { - kfree(dev->me_clients); - dev->me_clients = NULL; - } - dev_dbg(&dev->pdev->dev, "memory allocation for ME clients size=%zd.\n", - dev->me_clients_num * sizeof(struct mei_me_client)); - /* allocate storage for ME clients representation */ - clients = kcalloc(dev->me_clients_num, - sizeof(struct mei_me_client), GFP_KERNEL); - if (!clients) { - dev_dbg(&dev->pdev->dev, "memory allocation for ME clients failed.\n"); - dev->mei_state = MEI_RESETING; - mei_reset(dev, 1); - return ; - } - dev->me_clients = clients; - return ; -} -/** - * host_client_properties - reads properties for client - * - * @dev: the device structure - * - * returns: - * < 0 - Error. - * = 0 - no more clients. - * = 1 - still have clients to send properties request. - */ -int mei_host_client_properties(struct mei_device *dev) -{ - struct mei_msg_hdr *mei_header; - struct hbm_props_request *host_cli_req; - int b; - u8 client_num = dev->me_client_presentation_num; - - b = dev->me_client_index; - b = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX, b); - if (b < MEI_CLIENTS_MAX) { - dev->me_clients[client_num].client_id = b; - dev->me_clients[client_num].mei_flow_ctrl_creds = 0; - mei_header = (struct mei_msg_hdr *)&dev->wr_msg_buf[0]; - mei_header->host_addr = 0; - mei_header->me_addr = 0; - mei_header->length = sizeof(struct hbm_props_request); - mei_header->msg_complete = 1; - mei_header->reserved = 0; - - host_cli_req = (struct hbm_props_request *)&dev->wr_msg_buf[1]; - - memset(host_cli_req, 0, sizeof(struct hbm_props_request)); - - host_cli_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD; - host_cli_req->address = b; - - if (mei_write_message(dev, mei_header, - (unsigned char *)host_cli_req, - mei_header->length)) { - dev->mei_state = MEI_RESETING; - dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n"); - mei_reset(dev, 1); - return -EIO; - } - - dev->init_clients_timer = INIT_CLIENTS_TIMEOUT; - dev->me_client_index = b; - return 1; - } - - return 0; -} - -/** - * mei_init_file_private - initializes private file structure. - * - * @priv: private file structure to be initialized - * @file: the file structure - */ -void mei_cl_init(struct mei_cl *priv, struct mei_device *dev) -{ - memset(priv, 0, sizeof(struct mei_cl)); - init_waitqueue_head(&priv->wait); - init_waitqueue_head(&priv->rx_wait); - init_waitqueue_head(&priv->tx_wait); - INIT_LIST_HEAD(&priv->link); - priv->reading_state = MEI_IDLE; - priv->writing_state = MEI_IDLE; - priv->dev = dev; -} - -int mei_find_me_client_index(const struct mei_device *dev, uuid_le cuuid) -{ - int i, res = -1; - - for (i = 0; i < dev->me_clients_num; ++i) - if (uuid_le_cmp(cuuid, - dev->me_clients[i].props.protocol_name) == 0) { - res = i; - break; - } - - return res; -} - - -/** - * mei_find_me_client_update_filext - searches for ME client guid - * sets client_id in mei_file_private if found - * @dev: the device structure - * @priv: private file structure to set client_id in - * @cguid: searched guid of ME client - * @client_id: id of host client to be set in file private structure - * - * returns ME client index - */ -u8 mei_find_me_client_update_filext(struct mei_device *dev, struct mei_cl *priv, - const uuid_le *cguid, u8 client_id) -{ - int i; - - if (!dev || !priv || !cguid) - return 0; - - /* check for valid client id */ - i = mei_find_me_client_index(dev, *cguid); - if (i >= 0) { - priv->me_client_id = dev->me_clients[i].client_id; - priv->state = MEI_FILE_CONNECTING; - priv->host_client_id = client_id; - - list_add_tail(&priv->link, &dev->file_list); - return (u8)i; - } - - return 0; -} - -/** - * host_init_iamthif - mei initialization iamthif client. - * - * @dev: the device structure - * - */ -void mei_host_init_iamthif(struct mei_device *dev) -{ - u8 i; - unsigned char *msg_buf; - - mei_cl_init(&dev->iamthif_cl, dev); - dev->iamthif_cl.state = MEI_FILE_DISCONNECTED; - - /* find ME amthi client */ - i = mei_find_me_client_update_filext(dev, &dev->iamthif_cl, - &mei_amthi_guid, MEI_IAMTHIF_HOST_CLIENT_ID); - if (dev->iamthif_cl.state != MEI_FILE_CONNECTING) { - dev_dbg(&dev->pdev->dev, "failed to find iamthif client.\n"); - return; - } - - /* Assign iamthif_mtu to the value received from ME */ - - dev->iamthif_mtu = dev->me_clients[i].props.max_msg_length; - dev_dbg(&dev->pdev->dev, "IAMTHIF_MTU = %d\n", - dev->me_clients[i].props.max_msg_length); - - kfree(dev->iamthif_msg_buf); - dev->iamthif_msg_buf = NULL; - - /* allocate storage for ME message buffer */ - msg_buf = kcalloc(dev->iamthif_mtu, - sizeof(unsigned char), GFP_KERNEL); - if (!msg_buf) { - dev_dbg(&dev->pdev->dev, "memory allocation for ME message buffer failed.\n"); - return; - } - - dev->iamthif_msg_buf = msg_buf; - - if (mei_connect(dev, &dev->iamthif_cl)) { - dev_dbg(&dev->pdev->dev, "Failed to connect to AMTHI client\n"); - dev->iamthif_cl.state = MEI_FILE_DISCONNECTED; - dev->iamthif_cl.host_client_id = 0; - } else { - dev->iamthif_cl.timer_count = CONNECT_TIMEOUT; - } -} - -/** - * mei_alloc_file_private - allocates a private file structure and sets it up. - * @file: the file structure - * - * returns The allocated file or NULL on failure - */ -struct mei_cl *mei_cl_allocate(struct mei_device *dev) -{ - struct mei_cl *cl; - - cl = kmalloc(sizeof(struct mei_cl), GFP_KERNEL); - if (!cl) - return NULL; - - mei_cl_init(cl, dev); - - return cl; -} - - - -/** - * mei_disconnect_host_client - sends disconnect message to fw from host client. - * - * @dev: the device structure - * @cl: private data of the file object - * - * Locking: called under "dev->device_lock" lock - * - * returns 0 on success, <0 on failure. - */ -int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl) -{ - int rets, err; - long timeout = 15; /* 15 seconds */ - struct mei_cl_cb *cb; - - if (!dev || !cl) - return -ENODEV; - - if (cl->state != MEI_FILE_DISCONNECTING) - return 0; - - cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); - if (!cb) - return -ENOMEM; - - INIT_LIST_HEAD(&cb->cb_list); - cb->file_private = cl; - cb->major_file_operations = MEI_CLOSE; - if (dev->mei_host_buffer_is_empty) { - dev->mei_host_buffer_is_empty = false; - if (mei_disconnect(dev, cl)) { - rets = -ENODEV; - dev_dbg(&dev->pdev->dev, "failed to call mei_disconnect.\n"); - goto free; - } - mdelay(10); /* Wait for hardware disconnection ready */ - list_add_tail(&cb->cb_list, &dev->ctrl_rd_list.mei_cb.cb_list); - } else { - dev_dbg(&dev->pdev->dev, "add disconnect cb to control write list\n"); - list_add_tail(&cb->cb_list, - &dev->ctrl_wr_list.mei_cb.cb_list); - } - mutex_unlock(&dev->device_lock); - - err = wait_event_timeout(dev->wait_recvd_msg, - (MEI_FILE_DISCONNECTED == cl->state), - timeout * HZ); - - mutex_lock(&dev->device_lock); - if (MEI_FILE_DISCONNECTED == cl->state) { - rets = 0; - dev_dbg(&dev->pdev->dev, "successfully disconnected from FW client.\n"); - } else { - rets = -ENODEV; - if (MEI_FILE_DISCONNECTED != cl->state) - dev_dbg(&dev->pdev->dev, "wrong status client disconnect.\n"); - - if (err) - dev_dbg(&dev->pdev->dev, - "wait failed disconnect err=%08x\n", - err); - - dev_dbg(&dev->pdev->dev, "failed to disconnect from FW client.\n"); - } - - mei_io_list_flush(&dev->ctrl_rd_list, cl); - mei_io_list_flush(&dev->ctrl_wr_list, cl); -free: - mei_free_cb_private(cb); - return rets; -} - -/** - * mei_remove_client_from_file_list - - * removes file private data from device file list - * - * @dev: the device structure - * @host_client_id: host client id to be removed - */ -void mei_remove_client_from_file_list(struct mei_device *dev, - u8 host_client_id) -{ - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { - if (host_client_id == cl_pos->host_client_id) { - dev_dbg(&dev->pdev->dev, "remove host client = %d, ME client = %d\n", - cl_pos->host_client_id, - cl_pos->me_client_id); - list_del_init(&cl_pos->link); - break; - } - } -} diff --git a/drivers/staging/mei/interface.c b/drivers/staging/mei/interface.c deleted file mode 100644 index 9a2cfaf..0000000 --- a/drivers/staging/mei/interface.c +++ /dev/null @@ -1,428 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - -#include <linux/pci.h> -#include "mei_dev.h" -#include "mei.h" -#include "interface.h" - - - -/** - * mei_set_csr_register - writes H_CSR register to the mei device, - * and ignores the H_IS bit for it is write-one-to-zero. - * - * @dev: the device structure - */ -void mei_hcsr_set(struct mei_device *dev) -{ - if ((dev->host_hw_state & H_IS) == H_IS) - dev->host_hw_state &= ~H_IS; - mei_reg_write(dev, H_CSR, dev->host_hw_state); - dev->host_hw_state = mei_hcsr_read(dev); -} - -/** - * mei_csr_enable_interrupts - enables mei device interrupts - * - * @dev: the device structure - */ -void mei_enable_interrupts(struct mei_device *dev) -{ - dev->host_hw_state |= H_IE; - mei_hcsr_set(dev); -} - -/** - * mei_csr_disable_interrupts - disables mei device interrupts - * - * @dev: the device structure - */ -void mei_disable_interrupts(struct mei_device *dev) -{ - dev->host_hw_state &= ~H_IE; - mei_hcsr_set(dev); -} - -/** - * _host_get_filled_slots - gets number of device filled buffer slots - * - * @device: the device structure - * - * returns number of filled slots - */ -static unsigned char _host_get_filled_slots(const struct mei_device *dev) -{ - char read_ptr, write_ptr; - - read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8); - write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16); - - return (unsigned char) (write_ptr - read_ptr); -} - -/** - * mei_host_buffer_is_empty - checks if host buffer is empty. - * - * @dev: the device structure - * - * returns 1 if empty, 0 - otherwise. - */ -int mei_host_buffer_is_empty(struct mei_device *dev) -{ - unsigned char filled_slots; - - dev->host_hw_state = mei_hcsr_read(dev); - filled_slots = _host_get_filled_slots(dev); - - if (filled_slots == 0) - return 1; - - return 0; -} - -/** - * mei_count_empty_write_slots - counts write empty slots. - * - * @dev: the device structure - * - * returns -1(ESLOTS_OVERFLOW) if overflow, otherwise empty slots count - */ -int mei_count_empty_write_slots(struct mei_device *dev) -{ - unsigned char buffer_depth, filled_slots, empty_slots; - - dev->host_hw_state = mei_hcsr_read(dev); - buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); - filled_slots = _host_get_filled_slots(dev); - empty_slots = buffer_depth - filled_slots; - - /* check for overflow */ - if (filled_slots > buffer_depth) - return -EOVERFLOW; - - return empty_slots; -} - -/** - * mei_write_message - writes a message to mei device. - * - * @dev: the device structure - * @header: header of message - * @write_buffer: message buffer will be written - * @write_length: message size will be written - * - * This function returns -EIO if write has failed - */ -int mei_write_message(struct mei_device *dev, - struct mei_msg_hdr *header, - unsigned char *write_buffer, - unsigned long write_length) -{ - u32 temp_msg = 0; - unsigned long bytes_written = 0; - unsigned char buffer_depth, filled_slots, empty_slots; - unsigned long dw_to_write; - - dev->host_hw_state = mei_hcsr_read(dev); - - dev_dbg(&dev->pdev->dev, - "host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - dev_dbg(&dev->pdev->dev, - "mei_write_message header=%08x.\n", - *((u32 *) header)); - - buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); - filled_slots = _host_get_filled_slots(dev); - empty_slots = buffer_depth - filled_slots; - dev_dbg(&dev->pdev->dev, - "filled = %hu, empty = %hu.\n", - filled_slots, empty_slots); - - dw_to_write = ((write_length + 3) / 4); - - if (dw_to_write > empty_slots) - return -EIO; - - mei_reg_write(dev, H_CB_WW, *((u32 *) header)); - - while (write_length >= 4) { - mei_reg_write(dev, H_CB_WW, - *(u32 *) (write_buffer + bytes_written)); - bytes_written += 4; - write_length -= 4; - } - - if (write_length > 0) { - memcpy(&temp_msg, &write_buffer[bytes_written], write_length); - mei_reg_write(dev, H_CB_WW, temp_msg); - } - - dev->host_hw_state |= H_IG; - mei_hcsr_set(dev); - dev->me_hw_state = mei_mecsr_read(dev); - if ((dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA) - return -EIO; - - return 0; -} - -/** - * mei_count_full_read_slots - counts read full slots. - * - * @dev: the device structure - * - * returns -1(ESLOTS_OVERFLOW) if overflow, otherwise filled slots count - */ -int mei_count_full_read_slots(struct mei_device *dev) -{ - char read_ptr, write_ptr; - unsigned char buffer_depth, filled_slots; - - dev->me_hw_state = mei_mecsr_read(dev); - buffer_depth = (unsigned char)((dev->me_hw_state & ME_CBD_HRA) >> 24); - read_ptr = (char) ((dev->me_hw_state & ME_CBRP_HRA) >> 8); - write_ptr = (char) ((dev->me_hw_state & ME_CBWP_HRA) >> 16); - filled_slots = (unsigned char) (write_ptr - read_ptr); - - /* check for overflow */ - if (filled_slots > buffer_depth) - return -EOVERFLOW; - - dev_dbg(&dev->pdev->dev, "filled_slots =%08x\n", filled_slots); - return (int)filled_slots; -} - -/** - * mei_read_slots - reads a message from mei device. - * - * @dev: the device structure - * @buffer: message buffer will be written - * @buffer_length: message size will be read - */ -void mei_read_slots(struct mei_device *dev, unsigned char *buffer, - unsigned long buffer_length) -{ - u32 *reg_buf = (u32 *)buffer; - - for (; buffer_length >= sizeof(u32); buffer_length -= sizeof(u32)) - *reg_buf++ = mei_mecbrw_read(dev); - - if (buffer_length > 0) { - u32 reg = mei_mecbrw_read(dev); - memcpy(reg_buf, ®, buffer_length); - } - - dev->host_hw_state |= H_IG; - mei_hcsr_set(dev); -} - -/** - * mei_flow_ctrl_creds - checks flow_control credentials. - * - * @dev: the device structure - * @cl: private data of the file object - * - * returns 1 if mei_flow_ctrl_creds >0, 0 - otherwise. - * -ENOENT if mei_cl is not present - * -EINVAL if single_recv_buf == 0 - */ -int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl) -{ - int i; - - if (!dev->me_clients_num) - return 0; - - if (cl->mei_flow_ctrl_creds > 0) - return 1; - - for (i = 0; i < dev->me_clients_num; i++) { - struct mei_me_client *me_cl = &dev->me_clients[i]; - if (me_cl->client_id == cl->me_client_id) { - if (me_cl->mei_flow_ctrl_creds) { - if (WARN_ON(me_cl->props.single_recv_buf == 0)) - return -EINVAL; - return 1; - } else { - return 0; - } - } - } - return -ENOENT; -} - -/** - * mei_flow_ctrl_reduce - reduces flow_control. - * - * @dev: the device structure - * @cl: private data of the file object - * @returns - * 0 on success - * -ENOENT when me client is not found - * -EINVAL when ctrl credits are <= 0 - */ -int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl) -{ - int i; - - if (!dev->me_clients_num) - return -ENOENT; - - for (i = 0; i < dev->me_clients_num; i++) { - struct mei_me_client *me_cl = &dev->me_clients[i]; - if (me_cl->client_id == cl->me_client_id) { - if (me_cl->props.single_recv_buf != 0) { - if (WARN_ON(me_cl->mei_flow_ctrl_creds <= 0)) - return -EINVAL; - dev->me_clients[i].mei_flow_ctrl_creds--; - } else { - if (WARN_ON(cl->mei_flow_ctrl_creds <= 0)) - return -EINVAL; - cl->mei_flow_ctrl_creds--; - } - return 0; - } - } - return -ENOENT; -} - -/** - * mei_send_flow_control - sends flow control to fw. - * - * @dev: the device structure - * @cl: private data of the file object - * - * This function returns -EIO on write failure - */ -int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl) -{ - struct mei_msg_hdr *mei_hdr; - struct hbm_flow_control *mei_flow_control; - - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_flow_control); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - mei_flow_control = (struct hbm_flow_control *) &dev->wr_msg_buf[1]; - memset(mei_flow_control, 0, sizeof(*mei_flow_control)); - mei_flow_control->host_addr = cl->host_client_id; - mei_flow_control->me_addr = cl->me_client_id; - mei_flow_control->hbm_cmd = MEI_FLOW_CONTROL_CMD; - memset(mei_flow_control->reserved, 0, - sizeof(mei_flow_control->reserved)); - dev_dbg(&dev->pdev->dev, "sending flow control host client = %d, ME client = %d\n", - cl->host_client_id, cl->me_client_id); - - return mei_write_message(dev, mei_hdr, - (unsigned char *) mei_flow_control, - sizeof(struct hbm_flow_control)); -} - -/** - * mei_other_client_is_connecting - checks if other - * client with the same client id is connected. - * - * @dev: the device structure - * @cl: private data of the file object - * - * returns 1 if other client is connected, 0 - otherwise. - */ -int mei_other_client_is_connecting(struct mei_device *dev, - struct mei_cl *cl) -{ - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - - list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { - if ((cl_pos->state == MEI_FILE_CONNECTING) && - (cl_pos != cl) && - cl->me_client_id == cl_pos->me_client_id) - return 1; - - } - return 0; -} - -/** - * mei_disconnect - sends disconnect message to fw. - * - * @dev: the device structure - * @cl: private data of the file object - * - * This function returns -EIO on write failure - */ -int mei_disconnect(struct mei_device *dev, struct mei_cl *cl) -{ - struct mei_msg_hdr *mei_hdr; - struct hbm_client_disconnect_request *mei_cli_disconnect; - - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_client_disconnect_request); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - mei_cli_disconnect = - (struct hbm_client_disconnect_request *) &dev->wr_msg_buf[1]; - memset(mei_cli_disconnect, 0, sizeof(*mei_cli_disconnect)); - mei_cli_disconnect->host_addr = cl->host_client_id; - mei_cli_disconnect->me_addr = cl->me_client_id; - mei_cli_disconnect->hbm_cmd = CLIENT_DISCONNECT_REQ_CMD; - mei_cli_disconnect->reserved[0] = 0; - - return mei_write_message(dev, mei_hdr, - (unsigned char *) mei_cli_disconnect, - sizeof(struct hbm_client_disconnect_request)); -} - -/** - * mei_connect - sends connect message to fw. - * - * @dev: the device structure - * @cl: private data of the file object - * - * This function returns -EIO on write failure - */ -int mei_connect(struct mei_device *dev, struct mei_cl *cl) -{ - struct mei_msg_hdr *mei_hdr; - struct hbm_client_connect_request *mei_cli_connect; - - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_client_connect_request); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - mei_cli_connect = - (struct hbm_client_connect_request *) &dev->wr_msg_buf[1]; - mei_cli_connect->host_addr = cl->host_client_id; - mei_cli_connect->me_addr = cl->me_client_id; - mei_cli_connect->hbm_cmd = CLIENT_CONNECT_REQ_CMD; - mei_cli_connect->reserved = 0; - - return mei_write_message(dev, mei_hdr, - (unsigned char *) mei_cli_connect, - sizeof(struct hbm_client_connect_request)); -} diff --git a/drivers/staging/mei/interface.h b/drivers/staging/mei/interface.h deleted file mode 100644 index fb90c6f..0000000 --- a/drivers/staging/mei/interface.h +++ /dev/null @@ -1,76 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - - - -#ifndef _MEI_INTERFACE_H_ -#define _MEI_INTERFACE_H_ - -#include "mei.h" -#include "mei_dev.h" - - -#define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */ -#define AMT_WD_MIN_TIMEOUT 120 /* seconds */ -#define AMT_WD_MAX_TIMEOUT 65535 /* seconds */ - -#define MEI_WATCHDOG_DATA_SIZE 16 -#define MEI_START_WD_DATA_SIZE 20 -#define MEI_WD_PARAMS_SIZE 4 - - -void mei_read_slots(struct mei_device *dev, - unsigned char *buffer, - unsigned long buffer_length); - -int mei_write_message(struct mei_device *dev, - struct mei_msg_hdr *header, - unsigned char *write_buffer, - unsigned long write_length); - -int mei_host_buffer_is_empty(struct mei_device *dev); - -int mei_count_full_read_slots(struct mei_device *dev); - -int mei_count_empty_write_slots(struct mei_device *dev); - -int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl); - -int mei_wd_send(struct mei_device *dev); -int mei_wd_stop(struct mei_device *dev, bool preserve); -bool mei_wd_host_init(struct mei_device *dev); -void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout); -/* - * mei_watchdog_register - Registering watchdog interface - * once we got connection to the WD Client - * @dev - mei device - */ -void mei_watchdog_register(struct mei_device *dev); -/* - * mei_watchdog_unregister - Unregistering watchdog interface - * @dev - mei device - */ -void mei_watchdog_unregister(struct mei_device *dev); - -int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl); - -int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl); - -int mei_disconnect(struct mei_device *dev, struct mei_cl *cl); -int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl); -int mei_connect(struct mei_device *dev, struct mei_cl *cl); - -#endif /* _MEI_INTERFACE_H_ */ diff --git a/drivers/staging/mei/interrupt.c b/drivers/staging/mei/interrupt.c deleted file mode 100644 index 2007d24..0000000 --- a/drivers/staging/mei/interrupt.c +++ /dev/null @@ -1,1590 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - - -#include <linux/pci.h> -#include <linux/kthread.h> -#include <linux/interrupt.h> -#include <linux/fs.h> -#include <linux/jiffies.h> - -#include "mei_dev.h" -#include "mei.h" -#include "hw.h" -#include "interface.h" - - -/** - * mei_interrupt_quick_handler - The ISR of the MEI device - * - * @irq: The irq number - * @dev_id: pointer to the device structure - * - * returns irqreturn_t - */ -irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id) -{ - struct mei_device *dev = (struct mei_device *) dev_id; - u32 csr_reg = mei_hcsr_read(dev); - - if ((csr_reg & H_IS) != H_IS) - return IRQ_NONE; - - /* clear H_IS bit in H_CSR */ - mei_reg_write(dev, H_CSR, csr_reg); - - return IRQ_WAKE_THREAD; -} - -/** - * _mei_cmpl - processes completed operation. - * - * @cl: private data of the file object. - * @cb_pos: callback block. - */ -static void _mei_cmpl(struct mei_cl *cl, struct mei_cl_cb *cb_pos) -{ - if (cb_pos->major_file_operations == MEI_WRITE) { - mei_free_cb_private(cb_pos); - cb_pos = NULL; - cl->writing_state = MEI_WRITE_COMPLETE; - if (waitqueue_active(&cl->tx_wait)) - wake_up_interruptible(&cl->tx_wait); - - } else if (cb_pos->major_file_operations == MEI_READ && - MEI_READING == cl->reading_state) { - cl->reading_state = MEI_READ_COMPLETE; - if (waitqueue_active(&cl->rx_wait)) - wake_up_interruptible(&cl->rx_wait); - - } -} - -/** - * _mei_cmpl_iamthif - processes completed iamthif operation. - * - * @dev: the device structure. - * @cb_pos: callback block. - */ -static void _mei_cmpl_iamthif(struct mei_device *dev, struct mei_cl_cb *cb_pos) -{ - if (dev->iamthif_canceled != 1) { - dev->iamthif_state = MEI_IAMTHIF_READ_COMPLETE; - dev->iamthif_stall_timer = 0; - memcpy(cb_pos->response_buffer.data, - dev->iamthif_msg_buf, - dev->iamthif_msg_buf_index); - list_add_tail(&cb_pos->cb_list, - &dev->amthi_read_complete_list.mei_cb.cb_list); - dev_dbg(&dev->pdev->dev, "amthi read completed.\n"); - dev->iamthif_timer = jiffies; - dev_dbg(&dev->pdev->dev, "dev->iamthif_timer = %ld\n", - dev->iamthif_timer); - } else { - mei_run_next_iamthif_cmd(dev); - } - - dev_dbg(&dev->pdev->dev, "completing amthi call back.\n"); - wake_up_interruptible(&dev->iamthif_cl.wait); -} - - -/** - * mei_irq_thread_read_amthi_message - bottom half read routine after ISR to - * handle the read amthi message data processing. - * - * @complete_list: An instance of our list structure - * @dev: the device structure - * @mei_hdr: header of amthi message - * - * returns 0 on success, <0 on failure. - */ -static int mei_irq_thread_read_amthi_message(struct mei_io_list *complete_list, - struct mei_device *dev, - struct mei_msg_hdr *mei_hdr) -{ - struct mei_cl *cl; - struct mei_cl_cb *cb; - unsigned char *buffer; - - BUG_ON(mei_hdr->me_addr != dev->iamthif_cl.me_client_id); - BUG_ON(dev->iamthif_state != MEI_IAMTHIF_READING); - - buffer = dev->iamthif_msg_buf + dev->iamthif_msg_buf_index; - BUG_ON(dev->iamthif_mtu < dev->iamthif_msg_buf_index + mei_hdr->length); - - mei_read_slots(dev, buffer, mei_hdr->length); - - dev->iamthif_msg_buf_index += mei_hdr->length; - - if (!mei_hdr->msg_complete) - return 0; - - dev_dbg(&dev->pdev->dev, - "amthi_message_buffer_index =%d\n", - mei_hdr->length); - - dev_dbg(&dev->pdev->dev, "completed amthi read.\n "); - if (!dev->iamthif_current_cb) - return -ENODEV; - - cb = dev->iamthif_current_cb; - dev->iamthif_current_cb = NULL; - - cl = (struct mei_cl *)cb->file_private; - if (!cl) - return -ENODEV; - - dev->iamthif_stall_timer = 0; - cb->information = dev->iamthif_msg_buf_index; - cb->read_time = jiffies; - if (dev->iamthif_ioctl && cl == &dev->iamthif_cl) { - /* found the iamthif cb */ - dev_dbg(&dev->pdev->dev, "complete the amthi read cb.\n "); - dev_dbg(&dev->pdev->dev, "add the amthi read cb to complete.\n "); - list_add_tail(&cb->cb_list, - &complete_list->mei_cb.cb_list); - } - return 0; -} - -/** - * _mei_irq_thread_state_ok - checks if mei header matches file private data - * - * @cl: private data of the file object - * @mei_hdr: header of mei client message - * - * returns !=0 if matches, 0 if no match. - */ -static int _mei_irq_thread_state_ok(struct mei_cl *cl, - struct mei_msg_hdr *mei_hdr) -{ - return (cl->host_client_id == mei_hdr->host_addr && - cl->me_client_id == mei_hdr->me_addr && - cl->state == MEI_FILE_CONNECTED && - MEI_READ_COMPLETE != cl->reading_state); -} - -/** - * mei_irq_thread_read_client_message - bottom half read routine after ISR to - * handle the read mei client message data processing. - * - * @complete_list: An instance of our list structure - * @dev: the device structure - * @mei_hdr: header of mei client message - * - * returns 0 on success, <0 on failure. - */ -static int mei_irq_thread_read_client_message(struct mei_io_list *complete_list, - struct mei_device *dev, - struct mei_msg_hdr *mei_hdr) -{ - struct mei_cl *cl; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; - unsigned char *buffer = NULL; - - dev_dbg(&dev->pdev->dev, "start client msg\n"); - if (list_empty(&dev->read_list.mei_cb.cb_list)) - goto quit; - - list_for_each_entry_safe(cb_pos, cb_next, - &dev->read_list.mei_cb.cb_list, cb_list) { - cl = (struct mei_cl *)cb_pos->file_private; - if (cl && _mei_irq_thread_state_ok(cl, mei_hdr)) { - cl->reading_state = MEI_READING; - buffer = cb_pos->response_buffer.data + cb_pos->information; - - if (cb_pos->response_buffer.size < - mei_hdr->length + cb_pos->information) { - dev_dbg(&dev->pdev->dev, "message overflow.\n"); - list_del(&cb_pos->cb_list); - return -ENOMEM; - } - if (buffer) - mei_read_slots(dev, buffer, mei_hdr->length); - - cb_pos->information += mei_hdr->length; - if (mei_hdr->msg_complete) { - cl->status = 0; - list_del(&cb_pos->cb_list); - dev_dbg(&dev->pdev->dev, - "completed read host client = %d," - "ME client = %d, " - "data length = %lu\n", - cl->host_client_id, - cl->me_client_id, - cb_pos->information); - - *(cb_pos->response_buffer.data + - cb_pos->information) = '\0'; - dev_dbg(&dev->pdev->dev, "cb_pos->res_buffer - %s\n", - cb_pos->response_buffer.data); - list_add_tail(&cb_pos->cb_list, - &complete_list->mei_cb.cb_list); - } - - break; - } - - } - -quit: - dev_dbg(&dev->pdev->dev, "message read\n"); - if (!buffer) { - mei_read_slots(dev, dev->rd_msg_buf, mei_hdr->length); - dev_dbg(&dev->pdev->dev, "discarding message, header =%08x.\n", - *(u32 *) dev->rd_msg_buf); - } - - return 0; -} - -/** - * _mei_irq_thread_iamthif_read - prepares to read iamthif data. - * - * @dev: the device structure. - * @slots: free slots. - * - * returns 0, OK; otherwise, error. - */ -static int _mei_irq_thread_iamthif_read(struct mei_device *dev, s32 *slots) -{ - - if (((*slots) * sizeof(u32)) < (sizeof(struct mei_msg_hdr) - + sizeof(struct hbm_flow_control))) { - return -EMSGSIZE; - } - *slots -= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_flow_control) + 3) / 4; - if (mei_send_flow_control(dev, &dev->iamthif_cl)) { - dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n"); - return -EIO; - } - - dev_dbg(&dev->pdev->dev, "iamthif flow control success\n"); - dev->iamthif_state = MEI_IAMTHIF_READING; - dev->iamthif_flow_control_pending = false; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_msg_buf_size = 0; - dev->iamthif_stall_timer = IAMTHIF_STALL_TIMER; - dev->mei_host_buffer_is_empty = mei_host_buffer_is_empty(dev); - return 0; -} - -/** - * _mei_irq_thread_close - processes close related operation. - * - * @dev: the device structure. - * @slots: free slots. - * @cb_pos: callback block. - * @cl: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots, - struct mei_cl_cb *cb_pos, - struct mei_cl *cl, - struct mei_io_list *cmpl_list) -{ - if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_client_disconnect_request))) { - *slots -= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_client_disconnect_request) + 3) / 4; - - if (mei_disconnect(dev, cl)) { - cl->status = 0; - cb_pos->information = 0; - list_move_tail(&cb_pos->cb_list, - &cmpl_list->mei_cb.cb_list); - return -EMSGSIZE; - } else { - cl->state = MEI_FILE_DISCONNECTING; - cl->status = 0; - cb_pos->information = 0; - list_move_tail(&cb_pos->cb_list, - &dev->ctrl_rd_list.mei_cb.cb_list); - cl->timer_count = MEI_CONNECT_TIMEOUT; - } - } else { - /* return the cancel routine */ - return -EBADMSG; - } - - return 0; -} - -/** - * is_treat_specially_client - checks if the message belongs - * to the file private data. - * - * @cl: private data of the file object - * @rs: connect response bus message - * - */ -static bool is_treat_specially_client(struct mei_cl *cl, - struct hbm_client_connect_response *rs) -{ - - if (cl->host_client_id == rs->host_addr && - cl->me_client_id == rs->me_addr) { - if (!rs->status) { - cl->state = MEI_FILE_CONNECTED; - cl->status = 0; - - } else { - cl->state = MEI_FILE_DISCONNECTED; - cl->status = -ENODEV; - } - cl->timer_count = 0; - - return true; - } - return false; -} - -/** - * mei_client_connect_response - connects to response irq routine - * - * @dev: the device structure - * @rs: connect response bus message - */ -static void mei_client_connect_response(struct mei_device *dev, - struct hbm_client_connect_response *rs) -{ - - struct mei_cl *cl; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; - - dev_dbg(&dev->pdev->dev, - "connect_response:\n" - "ME Client = %d\n" - "Host Client = %d\n" - "Status = %d\n", - rs->me_addr, - rs->host_addr, - rs->status); - - /* if WD or iamthif client treat specially */ - - if (is_treat_specially_client(&(dev->wd_cl), rs)) { - dev_dbg(&dev->pdev->dev, "successfully connected to WD client.\n"); - mei_watchdog_register(dev); - - /* next step in the state maching */ - mei_host_init_iamthif(dev); - return; - } - - if (is_treat_specially_client(&(dev->iamthif_cl), rs)) { - dev->iamthif_state = MEI_IAMTHIF_IDLE; - return; - } - list_for_each_entry_safe(cb_pos, cb_next, - &dev->ctrl_rd_list.mei_cb.cb_list, cb_list) { - - cl = (struct mei_cl *)cb_pos->file_private; - if (!cl) { - list_del(&cb_pos->cb_list); - return; - } - if (MEI_IOCTL == cb_pos->major_file_operations) { - if (is_treat_specially_client(cl, rs)) { - list_del(&cb_pos->cb_list); - cl->status = 0; - cl->timer_count = 0; - break; - } - } - } -} - -/** - * mei_client_disconnect_response - disconnects from response irq routine - * - * @dev: the device structure - * @rs: disconnect response bus message - */ -static void mei_client_disconnect_response(struct mei_device *dev, - struct hbm_client_connect_response *rs) -{ - struct mei_cl *cl; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; - - dev_dbg(&dev->pdev->dev, - "disconnect_response:\n" - "ME Client = %d\n" - "Host Client = %d\n" - "Status = %d\n", - rs->me_addr, - rs->host_addr, - rs->status); - - list_for_each_entry_safe(cb_pos, cb_next, - &dev->ctrl_rd_list.mei_cb.cb_list, cb_list) { - cl = (struct mei_cl *)cb_pos->file_private; - - if (!cl) { - list_del(&cb_pos->cb_list); - return; - } - - dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in ctrl_rd_list.\n"); - if (cl->host_client_id == rs->host_addr && - cl->me_client_id == rs->me_addr) { - - list_del(&cb_pos->cb_list); - if (!rs->status) - cl->state = MEI_FILE_DISCONNECTED; - - cl->status = 0; - cl->timer_count = 0; - break; - } - } -} - -/** - * same_flow_addr - tells if they have the same address. - * - * @file: private data of the file object. - * @flow: flow control. - * - * returns !=0, same; 0,not. - */ -static int same_flow_addr(struct mei_cl *cl, struct hbm_flow_control *flow) -{ - return (cl->host_client_id == flow->host_addr && - cl->me_client_id == flow->me_addr); -} - -/** - * add_single_flow_creds - adds single buffer credentials. - * - * @file: private data ot the file object. - * @flow: flow control. - */ -static void add_single_flow_creds(struct mei_device *dev, - struct hbm_flow_control *flow) -{ - struct mei_me_client *client; - int i; - - for (i = 0; i < dev->me_clients_num; i++) { - client = &dev->me_clients[i]; - if (client && flow->me_addr == client->client_id) { - if (client->props.single_recv_buf) { - client->mei_flow_ctrl_creds++; - dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n", - flow->me_addr); - dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n", - client->mei_flow_ctrl_creds); - } else { - BUG(); /* error in flow control */ - } - } - } -} - -/** - * mei_client_flow_control_response - flow control response irq routine - * - * @dev: the device structure - * @flow_control: flow control response bus message - */ -static void mei_client_flow_control_response(struct mei_device *dev, - struct hbm_flow_control *flow_control) -{ - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - - if (!flow_control->host_addr) { - /* single receive buffer */ - add_single_flow_creds(dev, flow_control); - } else { - /* normal connection */ - list_for_each_entry_safe(cl_pos, cl_next, - &dev->file_list, link) { - dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in file_list\n"); - - dev_dbg(&dev->pdev->dev, "cl of host client %d ME client %d.\n", - cl_pos->host_client_id, - cl_pos->me_client_id); - dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d.\n", - flow_control->host_addr, - flow_control->me_addr); - if (same_flow_addr(cl_pos, flow_control)) { - dev_dbg(&dev->pdev->dev, "recv ctrl msg for host %d ME %d.\n", - flow_control->host_addr, - flow_control->me_addr); - cl_pos->mei_flow_ctrl_creds++; - dev_dbg(&dev->pdev->dev, "flow control credentials = %d.\n", - cl_pos->mei_flow_ctrl_creds); - break; - } - } - } -} - -/** - * same_disconn_addr - tells if they have the same address - * - * @file: private data of the file object. - * @disconn: disconnection request. - * - * returns !=0, same; 0,not. - */ -static int same_disconn_addr(struct mei_cl *cl, - struct hbm_client_disconnect_request *disconn) -{ - return (cl->host_client_id == disconn->host_addr && - cl->me_client_id == disconn->me_addr); -} - -/** - * mei_client_disconnect_request - disconnects from request irq routine - * - * @dev: the device structure. - * @disconnect_req: disconnect request bus message. - */ -static void mei_client_disconnect_request(struct mei_device *dev, - struct hbm_client_disconnect_request *disconnect_req) -{ - struct mei_msg_hdr *mei_hdr; - struct hbm_client_connect_response *disconnect_res; - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - - list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { - if (same_disconn_addr(cl_pos, disconnect_req)) { - dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n", - disconnect_req->host_addr, - disconnect_req->me_addr); - cl_pos->state = MEI_FILE_DISCONNECTED; - cl_pos->timer_count = 0; - if (cl_pos == &dev->wd_cl) { - dev->wd_due_counter = 0; - dev->wd_pending = false; - } else if (cl_pos == &dev->iamthif_cl) - dev->iamthif_timer = 0; - - /* prepare disconnect response */ - mei_hdr = - (struct mei_msg_hdr *) &dev->ext_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = - sizeof(struct hbm_client_connect_response); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - disconnect_res = - (struct hbm_client_connect_response *) - &dev->ext_msg_buf[1]; - disconnect_res->host_addr = cl_pos->host_client_id; - disconnect_res->me_addr = cl_pos->me_client_id; - disconnect_res->hbm_cmd = CLIENT_DISCONNECT_RES_CMD; - disconnect_res->status = 0; - dev->extra_write_index = 2; - break; - } - } -} - - -/** - * mei_irq_thread_read_bus_message - bottom half read routine after ISR to - * handle the read bus message cmd processing. - * - * @dev: the device structure - * @mei_hdr: header of bus message - */ -static void mei_irq_thread_read_bus_message(struct mei_device *dev, - struct mei_msg_hdr *mei_hdr) -{ - struct mei_bus_message *mei_msg; - struct hbm_host_version_response *version_res; - struct hbm_client_connect_response *connect_res; - struct hbm_client_connect_response *disconnect_res; - struct hbm_flow_control *flow_control; - struct hbm_props_response *props_res; - struct hbm_host_enum_response *enum_res; - struct hbm_client_disconnect_request *disconnect_req; - struct hbm_host_stop_request *host_stop_req; - int res; - - - /* read the message to our buffer */ - BUG_ON(mei_hdr->length >= sizeof(dev->rd_msg_buf)); - mei_read_slots(dev, dev->rd_msg_buf, mei_hdr->length); - mei_msg = (struct mei_bus_message *)dev->rd_msg_buf; - - switch (mei_msg->hbm_cmd) { - case HOST_START_RES_CMD: - version_res = (struct hbm_host_version_response *) mei_msg; - if (version_res->host_version_supported) { - dev->version.major_version = HBM_MAJOR_VERSION; - dev->version.minor_version = HBM_MINOR_VERSION; - if (dev->mei_state == MEI_INIT_CLIENTS && - dev->init_clients_state == MEI_START_MESSAGE) { - dev->init_clients_timer = 0; - mei_host_enum_clients_message(dev); - } else { - dev->recvd_msg = false; - dev_dbg(&dev->pdev->dev, "IMEI reset due to received host start response bus message.\n"); - mei_reset(dev, 1); - return; - } - } else { - dev->version = version_res->me_max_version; - /* send stop message */ - mei_hdr = (struct mei_msg_hdr *)&dev->wr_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_host_stop_request); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - host_stop_req = (struct hbm_host_stop_request *) - &dev->wr_msg_buf[1]; - - memset(host_stop_req, - 0, - sizeof(struct hbm_host_stop_request)); - host_stop_req->hbm_cmd = HOST_STOP_REQ_CMD; - host_stop_req->reason = DRIVER_STOP_REQUEST; - mei_write_message(dev, mei_hdr, - (unsigned char *) (host_stop_req), - mei_hdr->length); - dev_dbg(&dev->pdev->dev, "version mismatch.\n"); - return; - } - - dev->recvd_msg = true; - dev_dbg(&dev->pdev->dev, "host start response message received.\n"); - break; - - case CLIENT_CONNECT_RES_CMD: - connect_res = - (struct hbm_client_connect_response *) mei_msg; - mei_client_connect_response(dev, connect_res); - dev_dbg(&dev->pdev->dev, "client connect response message received.\n"); - wake_up(&dev->wait_recvd_msg); - break; - - case CLIENT_DISCONNECT_RES_CMD: - disconnect_res = - (struct hbm_client_connect_response *) mei_msg; - mei_client_disconnect_response(dev, disconnect_res); - dev_dbg(&dev->pdev->dev, "client disconnect response message received.\n"); - wake_up(&dev->wait_recvd_msg); - break; - - case MEI_FLOW_CONTROL_CMD: - flow_control = (struct hbm_flow_control *) mei_msg; - mei_client_flow_control_response(dev, flow_control); - dev_dbg(&dev->pdev->dev, "client flow control response message received.\n"); - break; - - case HOST_CLIENT_PROPERTIES_RES_CMD: - props_res = (struct hbm_props_response *)mei_msg; - if (props_res->status || !dev->me_clients) { - dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message wrong status.\n"); - mei_reset(dev, 1); - return; - } - if (dev->me_clients[dev->me_client_presentation_num] - .client_id == props_res->address) { - - dev->me_clients[dev->me_client_presentation_num].props - = props_res->client_properties; - - if (dev->mei_state == MEI_INIT_CLIENTS && - dev->init_clients_state == - MEI_CLIENT_PROPERTIES_MESSAGE) { - dev->me_client_index++; - dev->me_client_presentation_num++; - - /** Send Client Properties request **/ - res = mei_host_client_properties(dev); - if (res < 0) { - dev_dbg(&dev->pdev->dev, "mei_host_client_properties() failed"); - return; - } else if (!res) { - /* - * No more clients to send to. - * Clear Map for indicating now ME clients - * with associated host client - */ - bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX); - dev->open_handle_count = 0; - - /* - * Reserving the first three client IDs - * Client Id 0 - Reserved for MEI Bus Message communications - * Client Id 1 - Reserved for Watchdog - * Client ID 2 - Reserved for AMTHI - */ - bitmap_set(dev->host_clients_map, 0, 3); - dev->mei_state = MEI_ENABLED; - - /* if wd initialization fails, initialization the AMTHI client, - * otherwise the AMTHI client will be initialized after the WD client connect response - * will be received - */ - if (mei_wd_host_init(dev)) - mei_host_init_iamthif(dev); - } - - } else { - dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message"); - mei_reset(dev, 1); - return; - } - } else { - dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message for wrong client ID\n"); - mei_reset(dev, 1); - return; - } - break; - - case HOST_ENUM_RES_CMD: - enum_res = (struct hbm_host_enum_response *) mei_msg; - memcpy(dev->me_clients_map, enum_res->valid_addresses, 32); - if (dev->mei_state == MEI_INIT_CLIENTS && - dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) { - dev->init_clients_timer = 0; - dev->me_client_presentation_num = 0; - dev->me_client_index = 0; - mei_allocate_me_clients_storage(dev); - dev->init_clients_state = - MEI_CLIENT_PROPERTIES_MESSAGE; - mei_host_client_properties(dev); - } else { - dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n"); - mei_reset(dev, 1); - return; - } - break; - - case HOST_STOP_RES_CMD: - dev->mei_state = MEI_DISABLED; - dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n"); - mei_reset(dev, 1); - break; - - case CLIENT_DISCONNECT_REQ_CMD: - /* search for client */ - disconnect_req = - (struct hbm_client_disconnect_request *) mei_msg; - mei_client_disconnect_request(dev, disconnect_req); - break; - - case ME_STOP_REQ_CMD: - /* prepare stop request */ - mei_hdr = (struct mei_msg_hdr *) &dev->ext_msg_buf[0]; - mei_hdr->host_addr = 0; - mei_hdr->me_addr = 0; - mei_hdr->length = sizeof(struct hbm_host_stop_request); - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - host_stop_req = - (struct hbm_host_stop_request *) &dev->ext_msg_buf[1]; - memset(host_stop_req, 0, sizeof(struct hbm_host_stop_request)); - host_stop_req->hbm_cmd = HOST_STOP_REQ_CMD; - host_stop_req->reason = DRIVER_STOP_REQUEST; - host_stop_req->reserved[0] = 0; - host_stop_req->reserved[1] = 0; - dev->extra_write_index = 2; - break; - - default: - BUG(); - break; - - } -} - - -/** - * _mei_hb_read - processes read related operation. - * - * @dev: the device structure. - * @slots: free slots. - * @cb_pos: callback block. - * @cl: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots, - struct mei_cl_cb *cb_pos, - struct mei_cl *cl, - struct mei_io_list *cmpl_list) -{ - if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_flow_control))) { - /* return the cancel routine */ - list_del(&cb_pos->cb_list); - return -EBADMSG; - } - - *slots -= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_flow_control) + 3) / 4; - if (mei_send_flow_control(dev, cl)) { - cl->status = -ENODEV; - cb_pos->information = 0; - list_move_tail(&cb_pos->cb_list, &cmpl_list->mei_cb.cb_list); - return -ENODEV; - } - list_move_tail(&cb_pos->cb_list, &dev->read_list.mei_cb.cb_list); - - return 0; -} - - -/** - * _mei_irq_thread_ioctl - processes ioctl related operation. - * - * @dev: the device structure. - * @slots: free slots. - * @cb_pos: callback block. - * @cl: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots, - struct mei_cl_cb *cb_pos, - struct mei_cl *cl, - struct mei_io_list *cmpl_list) -{ - if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_client_connect_request))) { - cl->state = MEI_FILE_CONNECTING; - *slots -= (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_client_connect_request) + 3) / 4; - if (mei_connect(dev, cl)) { - cl->status = -ENODEV; - cb_pos->information = 0; - list_del(&cb_pos->cb_list); - return -ENODEV; - } else { - list_move_tail(&cb_pos->cb_list, - &dev->ctrl_rd_list.mei_cb.cb_list); - cl->timer_count = MEI_CONNECT_TIMEOUT; - } - } else { - /* return the cancel routine */ - list_del(&cb_pos->cb_list); - return -EBADMSG; - } - - return 0; -} - -/** - * _mei_irq_thread_cmpl - processes completed and no-iamthif operation. - * - * @dev: the device structure. - * @slots: free slots. - * @cb_pos: callback block. - * @cl: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots, - struct mei_cl_cb *cb_pos, - struct mei_cl *cl, - struct mei_io_list *cmpl_list) -{ - struct mei_msg_hdr *mei_hdr; - - if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) + - (cb_pos->request_buffer.size - - cb_pos->information))) { - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = cl->host_client_id; - mei_hdr->me_addr = cl->me_client_id; - mei_hdr->length = cb_pos->request_buffer.size - - cb_pos->information; - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - dev_dbg(&dev->pdev->dev, "cb_pos->request_buffer.size =%d" - "mei_hdr->msg_complete = %d\n", - cb_pos->request_buffer.size, - mei_hdr->msg_complete); - dev_dbg(&dev->pdev->dev, "cb_pos->information =%lu\n", - cb_pos->information); - dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n", - mei_hdr->length); - *slots -= (sizeof(struct mei_msg_hdr) + - mei_hdr->length + 3) / 4; - if (mei_write_message(dev, mei_hdr, - (unsigned char *) - (cb_pos->request_buffer.data + - cb_pos->information), - mei_hdr->length)) { - cl->status = -ENODEV; - list_move_tail(&cb_pos->cb_list, - &cmpl_list->mei_cb.cb_list); - return -ENODEV; - } else { - if (mei_flow_ctrl_reduce(dev, cl)) - return -ENODEV; - cl->status = 0; - cb_pos->information += mei_hdr->length; - list_move_tail(&cb_pos->cb_list, - &dev->write_waiting_list.mei_cb.cb_list); - } - } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) { - /* buffer is still empty */ - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = cl->host_client_id; - mei_hdr->me_addr = cl->me_client_id; - mei_hdr->length = - (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr); - mei_hdr->msg_complete = 0; - mei_hdr->reserved = 0; - - (*slots) -= (sizeof(struct mei_msg_hdr) + - mei_hdr->length + 3) / 4; - if (mei_write_message(dev, mei_hdr, - (unsigned char *) - (cb_pos->request_buffer.data + - cb_pos->information), - mei_hdr->length)) { - cl->status = -ENODEV; - list_move_tail(&cb_pos->cb_list, - &cmpl_list->mei_cb.cb_list); - return -ENODEV; - } else { - cb_pos->information += mei_hdr->length; - dev_dbg(&dev->pdev->dev, - "cb_pos->request_buffer.size =%d" - " mei_hdr->msg_complete = %d\n", - cb_pos->request_buffer.size, - mei_hdr->msg_complete); - dev_dbg(&dev->pdev->dev, "cb_pos->information =%lu\n", - cb_pos->information); - dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n", - mei_hdr->length); - } - return -EMSGSIZE; - } else { - return -EBADMSG; - } - - return 0; -} - -/** - * _mei_irq_thread_cmpl_iamthif - processes completed iamthif operation. - * - * @dev: the device structure. - * @slots: free slots. - * @cb_pos: callback block. - * @cl: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots, - struct mei_cl_cb *cb_pos, - struct mei_cl *cl, - struct mei_io_list *cmpl_list) -{ - struct mei_msg_hdr *mei_hdr; - - if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) + - dev->iamthif_msg_buf_size - - dev->iamthif_msg_buf_index)) { - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = cl->host_client_id; - mei_hdr->me_addr = cl->me_client_id; - mei_hdr->length = dev->iamthif_msg_buf_size - - dev->iamthif_msg_buf_index; - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - *slots -= (sizeof(struct mei_msg_hdr) + - mei_hdr->length + 3) / 4; - - if (mei_write_message(dev, mei_hdr, - (dev->iamthif_msg_buf + - dev->iamthif_msg_buf_index), - mei_hdr->length)) { - dev->iamthif_state = MEI_IAMTHIF_IDLE; - cl->status = -ENODEV; - list_del(&cb_pos->cb_list); - return -ENODEV; - } else { - if (mei_flow_ctrl_reduce(dev, cl)) - return -ENODEV; - dev->iamthif_msg_buf_index += mei_hdr->length; - cb_pos->information = dev->iamthif_msg_buf_index; - cl->status = 0; - dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL; - dev->iamthif_flow_control_pending = true; - /* save iamthif cb sent to amthi client */ - dev->iamthif_current_cb = cb_pos; - list_move_tail(&cb_pos->cb_list, - &dev->write_waiting_list.mei_cb.cb_list); - - } - } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) { - /* buffer is still empty */ - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = cl->host_client_id; - mei_hdr->me_addr = cl->me_client_id; - mei_hdr->length = - (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr); - mei_hdr->msg_complete = 0; - mei_hdr->reserved = 0; - - *slots -= (sizeof(struct mei_msg_hdr) + - mei_hdr->length + 3) / 4; - - if (mei_write_message(dev, mei_hdr, - (dev->iamthif_msg_buf + - dev->iamthif_msg_buf_index), - mei_hdr->length)) { - cl->status = -ENODEV; - list_del(&cb_pos->cb_list); - } else { - dev->iamthif_msg_buf_index += mei_hdr->length; - } - return -EMSGSIZE; - } else { - return -EBADMSG; - } - - return 0; -} - -/** - * mei_irq_thread_read_handler - bottom half read routine after ISR to - * handle the read processing. - * - * @cmpl_list: An instance of our list structure - * @dev: the device structure - * @slots: slots to read. - * - * returns 0 on success, <0 on failure. - */ -static int mei_irq_thread_read_handler(struct mei_io_list *cmpl_list, - struct mei_device *dev, - s32 *slots) -{ - struct mei_msg_hdr *mei_hdr; - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - int ret = 0; - - if (!dev->rd_msg_hdr) { - dev->rd_msg_hdr = mei_mecbrw_read(dev); - dev_dbg(&dev->pdev->dev, "slots =%08x.\n", *slots); - (*slots)--; - dev_dbg(&dev->pdev->dev, "slots =%08x.\n", *slots); - } - mei_hdr = (struct mei_msg_hdr *) &dev->rd_msg_hdr; - dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n", mei_hdr->length); - - if (mei_hdr->reserved || !dev->rd_msg_hdr) { - dev_dbg(&dev->pdev->dev, "corrupted message header.\n"); - ret = -EBADMSG; - goto end; - } - - if (mei_hdr->host_addr || mei_hdr->me_addr) { - list_for_each_entry_safe(cl_pos, cl_next, - &dev->file_list, link) { - dev_dbg(&dev->pdev->dev, - "list_for_each_entry_safe read host" - " client = %d, ME client = %d\n", - cl_pos->host_client_id, - cl_pos->me_client_id); - if (cl_pos->host_client_id == mei_hdr->host_addr && - cl_pos->me_client_id == mei_hdr->me_addr) - break; - } - - if (&cl_pos->link == &dev->file_list) { - dev_dbg(&dev->pdev->dev, "corrupted message header\n"); - ret = -EBADMSG; - goto end; - } - } - if (((*slots) * sizeof(u32)) < mei_hdr->length) { - dev_dbg(&dev->pdev->dev, - "we can't read the message slots =%08x.\n", - *slots); - /* we can't read the message */ - ret = -ERANGE; - goto end; - } - - /* decide where to read the message too */ - if (!mei_hdr->host_addr) { - dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_bus_message.\n"); - mei_irq_thread_read_bus_message(dev, mei_hdr); - dev_dbg(&dev->pdev->dev, "end mei_irq_thread_read_bus_message.\n"); - } else if (mei_hdr->host_addr == dev->iamthif_cl.host_client_id && - (MEI_FILE_CONNECTED == dev->iamthif_cl.state) && - (dev->iamthif_state == MEI_IAMTHIF_READING)) { - dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_iamthif_message.\n"); - dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n", - mei_hdr->length); - ret = mei_irq_thread_read_amthi_message(cmpl_list, - dev, mei_hdr); - if (ret) - goto end; - - } else { - dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_client_message.\n"); - ret = mei_irq_thread_read_client_message(cmpl_list, - dev, mei_hdr); - if (ret) - goto end; - - } - - /* reset the number of slots and header */ - *slots = mei_count_full_read_slots(dev); - dev->rd_msg_hdr = 0; - - if (*slots == -EOVERFLOW) { - /* overflow - reset */ - dev_dbg(&dev->pdev->dev, "resetting due to slots overflow.\n"); - /* set the event since message has been read */ - ret = -ERANGE; - goto end; - } -end: - return ret; -} - - -/** - * mei_irq_thread_write_handler - bottom half write routine after - * ISR to handle the write processing. - * - * @cmpl_list: An instance of our list structure - * @dev: the device structure - * @slots: slots to write. - * - * returns 0 on success, <0 on failure. - */ -static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list, - struct mei_device *dev, - s32 *slots) -{ - - struct mei_cl *cl; - struct mei_cl_cb *pos = NULL, *next = NULL; - struct mei_io_list *list; - int ret; - - if (!mei_host_buffer_is_empty(dev)) { - dev_dbg(&dev->pdev->dev, "host buffer is not empty.\n"); - return 0; - } - *slots = mei_count_empty_write_slots(dev); - /* complete all waiting for write CB */ - dev_dbg(&dev->pdev->dev, "complete all waiting for write cb.\n"); - - list = &dev->write_waiting_list; - list_for_each_entry_safe(pos, next, - &list->mei_cb.cb_list, cb_list) { - cl = (struct mei_cl *)pos->file_private; - if (cl == NULL) - continue; - - cl->status = 0; - list_del(&pos->cb_list); - if (MEI_WRITING == cl->writing_state && - (pos->major_file_operations == MEI_WRITE) && - (cl != &dev->iamthif_cl)) { - dev_dbg(&dev->pdev->dev, - "MEI WRITE COMPLETE\n"); - cl->writing_state = MEI_WRITE_COMPLETE; - list_add_tail(&pos->cb_list, - &cmpl_list->mei_cb.cb_list); - } - if (cl == &dev->iamthif_cl) { - dev_dbg(&dev->pdev->dev, "check iamthif flow control.\n"); - if (dev->iamthif_flow_control_pending) { - ret = _mei_irq_thread_iamthif_read( - dev, slots); - if (ret) - return ret; - } - } - } - - if (dev->stop && !dev->wd_pending) { - dev->wd_stopped = true; - wake_up_interruptible(&dev->wait_stop_wd); - return 0; - } - - if (dev->extra_write_index) { - dev_dbg(&dev->pdev->dev, "extra_write_index =%d.\n", - dev->extra_write_index); - mei_write_message(dev, - (struct mei_msg_hdr *) &dev->ext_msg_buf[0], - (unsigned char *) &dev->ext_msg_buf[1], - (dev->extra_write_index - 1) * sizeof(u32)); - *slots -= dev->extra_write_index; - dev->extra_write_index = 0; - } - if (dev->mei_state == MEI_ENABLED) { - if (dev->wd_pending && - mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) { - if (mei_wd_send(dev)) - dev_dbg(&dev->pdev->dev, "wd send failed.\n"); - else - if (mei_flow_ctrl_reduce(dev, &dev->wd_cl)) - return -ENODEV; - - dev->wd_pending = false; - - if (dev->wd_timeout) { - *slots -= (sizeof(struct mei_msg_hdr) + - MEI_START_WD_DATA_SIZE + 3) / 4; - dev->wd_due_counter = 2; - } else { - *slots -= (sizeof(struct mei_msg_hdr) + - MEI_WD_PARAMS_SIZE + 3) / 4; - dev->wd_due_counter = 0; - } - - } - } - if (dev->stop) - return -ENODEV; - - /* complete control write list CB */ - dev_dbg(&dev->pdev->dev, "complete control write list cb.\n"); - list_for_each_entry_safe(pos, next, - &dev->ctrl_wr_list.mei_cb.cb_list, cb_list) { - cl = (struct mei_cl *) pos->file_private; - if (!cl) { - list_del(&pos->cb_list); - return -ENODEV; - } - switch (pos->major_file_operations) { - case MEI_CLOSE: - /* send disconnect message */ - ret = _mei_irq_thread_close(dev, slots, pos, cl, cmpl_list); - if (ret) - return ret; - - break; - case MEI_READ: - /* send flow control message */ - ret = _mei_irq_thread_read(dev, slots, pos, cl, cmpl_list); - if (ret) - return ret; - - break; - case MEI_IOCTL: - /* connect message */ - if (mei_other_client_is_connecting(dev, cl)) - continue; - ret = _mei_irq_thread_ioctl(dev, slots, pos, cl, cmpl_list); - if (ret) - return ret; - - break; - - default: - BUG(); - } - - } - /* complete write list CB */ - dev_dbg(&dev->pdev->dev, "complete write list cb.\n"); - list_for_each_entry_safe(pos, next, - &dev->write_list.mei_cb.cb_list, cb_list) { - cl = (struct mei_cl *)pos->file_private; - if (cl == NULL) - continue; - - if (cl != &dev->iamthif_cl) { - if (!mei_flow_ctrl_creds(dev, cl)) { - dev_dbg(&dev->pdev->dev, - "No flow control" - " credentials for client" - " %d, not sending.\n", - cl->host_client_id); - continue; - } - ret = _mei_irq_thread_cmpl(dev, slots, - pos, - cl, cmpl_list); - if (ret) - return ret; - - } else if (cl == &dev->iamthif_cl) { - /* IAMTHIF IOCTL */ - dev_dbg(&dev->pdev->dev, "complete amthi write cb.\n"); - if (!mei_flow_ctrl_creds(dev, cl)) { - dev_dbg(&dev->pdev->dev, - "No flow control" - " credentials for amthi" - " client %d.\n", - cl->host_client_id); - continue; - } - ret = _mei_irq_thread_cmpl_iamthif(dev, - slots, - pos, - cl, - cmpl_list); - if (ret) - return ret; - - } - - } - return 0; -} - - - -/** - * mei_timer - timer function. - * - * @work: pointer to the work_struct structure - * - * NOTE: This function is called by timer interrupt work - */ -void mei_timer(struct work_struct *work) -{ - unsigned long timeout; - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - struct list_head *amthi_complete_list = NULL; - struct mei_cl_cb *cb_pos = NULL; - struct mei_cl_cb *cb_next = NULL; - - struct mei_device *dev = container_of(work, - struct mei_device, timer_work.work); - - - mutex_lock(&dev->device_lock); - if (dev->mei_state != MEI_ENABLED) { - if (dev->mei_state == MEI_INIT_CLIENTS) { - if (dev->init_clients_timer) { - if (--dev->init_clients_timer == 0) { - dev_dbg(&dev->pdev->dev, "IMEI reset due to init clients timeout ,init clients state = %d.\n", - dev->init_clients_state); - mei_reset(dev, 1); - } - } - } - goto out; - } - /*** connect/disconnect timeouts ***/ - list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { - if (cl_pos->timer_count) { - if (--cl_pos->timer_count == 0) { - dev_dbg(&dev->pdev->dev, "HECI reset due to connect/disconnect timeout.\n"); - mei_reset(dev, 1); - goto out; - } - } - } - - if (dev->iamthif_stall_timer) { - if (--dev->iamthif_stall_timer == 0) { - dev_dbg(&dev->pdev->dev, "resetting because of hang to amthi.\n"); - mei_reset(dev, 1); - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = false; - dev->iamthif_ioctl = true; - dev->iamthif_state = MEI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; - - if (dev->iamthif_current_cb) - mei_free_cb_private(dev->iamthif_current_cb); - - dev->iamthif_file_object = NULL; - dev->iamthif_current_cb = NULL; - mei_run_next_iamthif_cmd(dev); - } - } - - if (dev->iamthif_timer) { - - timeout = dev->iamthif_timer + - msecs_to_jiffies(IAMTHIF_READ_TIMER); - - dev_dbg(&dev->pdev->dev, "dev->iamthif_timer = %ld\n", - dev->iamthif_timer); - dev_dbg(&dev->pdev->dev, "timeout = %ld\n", timeout); - dev_dbg(&dev->pdev->dev, "jiffies = %ld\n", jiffies); - if (time_after(jiffies, timeout)) { - /* - * User didn't read the AMTHI data on time (15sec) - * freeing AMTHI for other requests - */ - - dev_dbg(&dev->pdev->dev, "freeing AMTHI for other requests\n"); - - amthi_complete_list = &dev->amthi_read_complete_list. - mei_cb.cb_list; - - list_for_each_entry_safe(cb_pos, cb_next, amthi_complete_list, cb_list) { - - cl_pos = cb_pos->file_object->private_data; - - /* Finding the AMTHI entry. */ - if (cl_pos == &dev->iamthif_cl) - list_del(&cb_pos->cb_list); - } - if (dev->iamthif_current_cb) - mei_free_cb_private(dev->iamthif_current_cb); - - dev->iamthif_file_object->private_data = NULL; - dev->iamthif_file_object = NULL; - dev->iamthif_current_cb = NULL; - dev->iamthif_timer = 0; - mei_run_next_iamthif_cmd(dev); - - } - } -out: - schedule_delayed_work(&dev->timer_work, 2 * HZ); - mutex_unlock(&dev->device_lock); -} - -/** - * mei_interrupt_thread_handler - function called after ISR to handle the interrupt - * processing. - * - * @irq: The irq number - * @dev_id: pointer to the device structure - * - * returns irqreturn_t - * - */ -irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id) -{ - struct mei_device *dev = (struct mei_device *) dev_id; - struct mei_io_list complete_list; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; - struct mei_cl *cl; - s32 slots; - int rets; - bool bus_message_received; - - - dev_dbg(&dev->pdev->dev, "function called after ISR to handle the interrupt processing.\n"); - /* initialize our complete list */ - mutex_lock(&dev->device_lock); - mei_io_list_init(&complete_list); - dev->host_hw_state = mei_hcsr_read(dev); - - /* Ack the interrupt here - * In case of MSI we don't go through the quick handler */ - if (pci_dev_msi_enabled(dev->pdev)) - mei_reg_write(dev, H_CSR, dev->host_hw_state); - - dev->me_hw_state = mei_mecsr_read(dev); - - /* check if ME wants a reset */ - if ((dev->me_hw_state & ME_RDY_HRA) == 0 && - dev->mei_state != MEI_RESETING && - dev->mei_state != MEI_INITIALIZING) { - dev_dbg(&dev->pdev->dev, "FW not ready.\n"); - mei_reset(dev, 1); - mutex_unlock(&dev->device_lock); - return IRQ_HANDLED; - } - - /* check if we need to start the dev */ - if ((dev->host_hw_state & H_RDY) == 0) { - if ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA) { - dev_dbg(&dev->pdev->dev, "we need to start the dev.\n"); - dev->host_hw_state |= (H_IE | H_IG | H_RDY); - mei_hcsr_set(dev); - dev->mei_state = MEI_INIT_CLIENTS; - dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n"); - /* link is established - * start sending messages. - */ - mei_host_start_message(dev); - mutex_unlock(&dev->device_lock); - return IRQ_HANDLED; - } else { - dev_dbg(&dev->pdev->dev, "FW not ready.\n"); - mutex_unlock(&dev->device_lock); - return IRQ_HANDLED; - } - } - /* check slots available for reading */ - slots = mei_count_full_read_slots(dev); - dev_dbg(&dev->pdev->dev, "slots =%08x extra_write_index =%08x.\n", - slots, dev->extra_write_index); - while (slots > 0 && !dev->extra_write_index) { - dev_dbg(&dev->pdev->dev, "slots =%08x extra_write_index =%08x.\n", - slots, dev->extra_write_index); - dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_handler.\n"); - rets = mei_irq_thread_read_handler(&complete_list, dev, &slots); - if (rets) - goto end; - } - rets = mei_irq_thread_write_handler(&complete_list, dev, &slots); -end: - dev_dbg(&dev->pdev->dev, "end of bottom half function.\n"); - dev->host_hw_state = mei_hcsr_read(dev); - dev->mei_host_buffer_is_empty = mei_host_buffer_is_empty(dev); - - bus_message_received = false; - if (dev->recvd_msg && waitqueue_active(&dev->wait_recvd_msg)) { - dev_dbg(&dev->pdev->dev, "received waiting bus message\n"); - bus_message_received = true; - } - mutex_unlock(&dev->device_lock); - if (bus_message_received) { - dev_dbg(&dev->pdev->dev, "wake up dev->wait_recvd_msg\n"); - wake_up_interruptible(&dev->wait_recvd_msg); - bus_message_received = false; - } - if (list_empty(&complete_list.mei_cb.cb_list)) - return IRQ_HANDLED; - - - list_for_each_entry_safe(cb_pos, cb_next, - &complete_list.mei_cb.cb_list, cb_list) { - cl = (struct mei_cl *)cb_pos->file_private; - list_del(&cb_pos->cb_list); - if (cl) { - if (cl != &dev->iamthif_cl) { - dev_dbg(&dev->pdev->dev, "completing call back.\n"); - _mei_cmpl(cl, cb_pos); - cb_pos = NULL; - } else if (cl == &dev->iamthif_cl) { - _mei_cmpl_iamthif(dev, cb_pos); - } - } - } - return IRQ_HANDLED; -} diff --git a/drivers/staging/mei/iorw.c b/drivers/staging/mei/iorw.c deleted file mode 100644 index 0a80dc4..0000000 --- a/drivers/staging/mei/iorw.c +++ /dev/null @@ -1,590 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - - -#include <linux/kernel.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/aio.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <linux/ioctl.h> -#include <linux/cdev.h> -#include <linux/list.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/uuid.h> -#include <linux/jiffies.h> -#include <linux/uaccess.h> - - -#include "mei_dev.h" -#include "hw.h" -#include "mei.h" -#include "interface.h" - - - -/** - * mei_ioctl_connect_client - the connect to fw client IOCTL function - * - * @dev: the device structure - * @data: IOCTL connect data, input and output parameters - * @file: private data of the file object - * - * Locking: called under "dev->device_lock" lock - * - * returns 0 on success, <0 on failure. - */ -int mei_ioctl_connect_client(struct file *file, - struct mei_connect_client_data *data) -{ - struct mei_device *dev; - struct mei_cl_cb *cb; - struct mei_client *client; - struct mei_cl *cl; - struct mei_cl *cl_pos = NULL; - struct mei_cl *cl_next = NULL; - long timeout = CONNECT_TIMEOUT; - int i; - int err; - int rets; - - cl = file->private_data; - if (WARN_ON(!cl || !cl->dev)) - return -ENODEV; - - dev = cl->dev; - - dev_dbg(&dev->pdev->dev, "mei_ioctl_connect_client() Entry\n"); - - - /* buffered ioctl cb */ - cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); - if (!cb) { - rets = -ENOMEM; - goto end; - } - INIT_LIST_HEAD(&cb->cb_list); - - cb->major_file_operations = MEI_IOCTL; - - if (dev->mei_state != MEI_ENABLED) { - rets = -ENODEV; - goto end; - } - if (cl->state != MEI_FILE_INITIALIZING && - cl->state != MEI_FILE_DISCONNECTED) { - rets = -EBUSY; - goto end; - } - - /* find ME client we're trying to connect to */ - i = mei_find_me_client_index(dev, data->in_client_uuid); - if (i >= 0 && !dev->me_clients[i].props.fixed_address) { - cl->me_client_id = dev->me_clients[i].client_id; - cl->state = MEI_FILE_CONNECTING; - } - - dev_dbg(&dev->pdev->dev, "Connect to FW Client ID = %d\n", - cl->me_client_id); - dev_dbg(&dev->pdev->dev, "FW Client - Protocol Version = %d\n", - dev->me_clients[i].props.protocol_version); - dev_dbg(&dev->pdev->dev, "FW Client - Max Msg Len = %d\n", - dev->me_clients[i].props.max_msg_length); - - /* if we're connecting to amthi client then we will use the - * existing connection - */ - if (uuid_le_cmp(data->in_client_uuid, mei_amthi_guid) == 0) { - dev_dbg(&dev->pdev->dev, "FW Client is amthi\n"); - if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) { - rets = -ENODEV; - goto end; - } - clear_bit(cl->host_client_id, dev->host_clients_map); - list_for_each_entry_safe(cl_pos, cl_next, - &dev->file_list, link) { - if (mei_cl_cmp_id(cl, cl_pos)) { - dev_dbg(&dev->pdev->dev, - "remove file private data node host" - " client = %d, ME client = %d.\n", - cl_pos->host_client_id, - cl_pos->me_client_id); - list_del(&cl_pos->link); - } - - } - dev_dbg(&dev->pdev->dev, "free file private data memory.\n"); - kfree(cl); - - cl = NULL; - file->private_data = &dev->iamthif_cl; - - client = &data->out_client_properties; - client->max_msg_length = - dev->me_clients[i].props.max_msg_length; - client->protocol_version = - dev->me_clients[i].props.protocol_version; - rets = dev->iamthif_cl.status; - - goto end; - } - - if (cl->state != MEI_FILE_CONNECTING) { - rets = -ENODEV; - goto end; - } - - - /* prepare the output buffer */ - client = &data->out_client_properties; - client->max_msg_length = dev->me_clients[i].props.max_msg_length; - client->protocol_version = dev->me_clients[i].props.protocol_version; - dev_dbg(&dev->pdev->dev, "Can connect?\n"); - if (dev->mei_host_buffer_is_empty - && !mei_other_client_is_connecting(dev, cl)) { - dev_dbg(&dev->pdev->dev, "Sending Connect Message\n"); - dev->mei_host_buffer_is_empty = false; - if (mei_connect(dev, cl)) { - dev_dbg(&dev->pdev->dev, "Sending connect message - failed\n"); - rets = -ENODEV; - goto end; - } else { - dev_dbg(&dev->pdev->dev, "Sending connect message - succeeded\n"); - cl->timer_count = MEI_CONNECT_TIMEOUT; - cb->file_private = cl; - list_add_tail(&cb->cb_list, - &dev->ctrl_rd_list.mei_cb. - cb_list); - } - - - } else { - dev_dbg(&dev->pdev->dev, "Queuing the connect request due to device busy\n"); - cb->file_private = cl; - dev_dbg(&dev->pdev->dev, "add connect cb to control write list.\n"); - list_add_tail(&cb->cb_list, - &dev->ctrl_wr_list.mei_cb.cb_list); - } - mutex_unlock(&dev->device_lock); - err = wait_event_timeout(dev->wait_recvd_msg, - (MEI_FILE_CONNECTED == cl->state || - MEI_FILE_DISCONNECTED == cl->state), - timeout * HZ); - - mutex_lock(&dev->device_lock); - if (MEI_FILE_CONNECTED == cl->state) { - dev_dbg(&dev->pdev->dev, "successfully connected to FW client.\n"); - rets = cl->status; - goto end; - } else { - dev_dbg(&dev->pdev->dev, "failed to connect to FW client.cl->state = %d.\n", - cl->state); - if (!err) { - dev_dbg(&dev->pdev->dev, - "wait_event_interruptible_timeout failed on client" - " connect message fw response message.\n"); - } - rets = -EFAULT; - - mei_io_list_flush(&dev->ctrl_rd_list, cl); - mei_io_list_flush(&dev->ctrl_wr_list, cl); - goto end; - } - rets = 0; -end: - dev_dbg(&dev->pdev->dev, "free connect cb memory."); - kfree(cb); - return rets; -} - -/** - * find_amthi_read_list_entry - finds a amthilist entry for current file - * - * @dev: the device structure - * @file: pointer to file object - * - * returns returned a list entry on success, NULL on failure. - */ -struct mei_cl_cb *find_amthi_read_list_entry( - struct mei_device *dev, - struct file *file) -{ - struct mei_cl *cl_temp; - struct mei_cl_cb *pos = NULL; - struct mei_cl_cb *next = NULL; - - list_for_each_entry_safe(pos, next, - &dev->amthi_read_complete_list.mei_cb.cb_list, cb_list) { - cl_temp = (struct mei_cl *)pos->file_private; - if (cl_temp && cl_temp == &dev->iamthif_cl && - pos->file_object == file) - return pos; - } - return NULL; -} - -/** - * amthi_read - read data from AMTHI client - * - * @dev: the device structure - * @if_num: minor number - * @file: pointer to file object - * @*ubuf: pointer to user data in user space - * @length: data length to read - * @offset: data read offset - * - * Locking: called under "dev->device_lock" lock - * - * returns - * returned data length on success, - * zero if no data to read, - * negative on failure. - */ -int amthi_read(struct mei_device *dev, struct file *file, - char __user *ubuf, size_t length, loff_t *offset) -{ - int rets; - int wait_ret; - struct mei_cl_cb *cb = NULL; - struct mei_cl *cl = file->private_data; - unsigned long timeout; - int i; - - /* Only Posible if we are in timeout */ - if (!cl || cl != &dev->iamthif_cl) { - dev_dbg(&dev->pdev->dev, "bad file ext.\n"); - return -ETIMEDOUT; - } - - for (i = 0; i < dev->me_clients_num; i++) { - if (dev->me_clients[i].client_id == - dev->iamthif_cl.me_client_id) - break; - } - - if (i == dev->me_clients_num) { - dev_dbg(&dev->pdev->dev, "amthi client not found.\n"); - return -ENODEV; - } - if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) - return -ENODEV; - - dev_dbg(&dev->pdev->dev, "checking amthi data\n"); - cb = find_amthi_read_list_entry(dev, file); - - /* Check for if we can block or not*/ - if (cb == NULL && file->f_flags & O_NONBLOCK) - return -EAGAIN; - - - dev_dbg(&dev->pdev->dev, "waiting for amthi data\n"); - while (cb == NULL) { - /* unlock the Mutex */ - mutex_unlock(&dev->device_lock); - - wait_ret = wait_event_interruptible(dev->iamthif_cl.wait, - (cb = find_amthi_read_list_entry(dev, file))); - - if (wait_ret) - return -ERESTARTSYS; - - dev_dbg(&dev->pdev->dev, "woke up from sleep\n"); - - /* Locking again the Mutex */ - mutex_lock(&dev->device_lock); - } - - - dev_dbg(&dev->pdev->dev, "Got amthi data\n"); - dev->iamthif_timer = 0; - - if (cb) { - timeout = cb->read_time + - msecs_to_jiffies(IAMTHIF_READ_TIMER); - dev_dbg(&dev->pdev->dev, "amthi timeout = %lud\n", - timeout); - - if (time_after(jiffies, timeout)) { - dev_dbg(&dev->pdev->dev, "amthi Time out\n"); - /* 15 sec for the message has expired */ - list_del(&cb->cb_list); - rets = -ETIMEDOUT; - goto free; - } - } - /* if the whole message will fit remove it from the list */ - if (cb->information >= *offset && length >= (cb->information - *offset)) - list_del(&cb->cb_list); - else if (cb->information > 0 && cb->information <= *offset) { - /* end of the message has been reached */ - list_del(&cb->cb_list); - rets = 0; - goto free; - } - /* else means that not full buffer will be read and do not - * remove message from deletion list - */ - - dev_dbg(&dev->pdev->dev, "amthi cb->response_buffer size - %d\n", - cb->response_buffer.size); - dev_dbg(&dev->pdev->dev, "amthi cb->information - %lu\n", - cb->information); - - /* length is being turncated to PAGE_SIZE, however, - * the information may be longer */ - length = min_t(size_t, length, (cb->information - *offset)); - - if (copy_to_user(ubuf, cb->response_buffer.data + *offset, length)) - rets = -EFAULT; - else { - rets = length; - if ((*offset + length) < cb->information) { - *offset += length; - goto out; - } - } -free: - dev_dbg(&dev->pdev->dev, "free amthi cb memory.\n"); - *offset = 0; - mei_free_cb_private(cb); -out: - return rets; -} - -/** - * mei_start_read - the start read client message function. - * - * @dev: the device structure - * @if_num: minor number - * @cl: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int mei_start_read(struct mei_device *dev, struct mei_cl *cl) -{ - struct mei_cl_cb *cb; - int rets = 0; - int i; - - if (cl->state != MEI_FILE_CONNECTED) - return -ENODEV; - - if (dev->mei_state != MEI_ENABLED) - return -ENODEV; - - dev_dbg(&dev->pdev->dev, "check if read is pending.\n"); - if (cl->read_pending || cl->read_cb) { - dev_dbg(&dev->pdev->dev, "read is pending.\n"); - return -EBUSY; - } - - cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); - if (!cb) - return -ENOMEM; - - dev_dbg(&dev->pdev->dev, "allocation call back successful. host client = %d, ME client = %d\n", - cl->host_client_id, cl->me_client_id); - - for (i = 0; i < dev->me_clients_num; i++) { - if (dev->me_clients[i].client_id == cl->me_client_id) - break; - - } - - if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) { - rets = -ENODEV; - goto unlock; - } - - if (i == dev->me_clients_num) { - rets = -ENODEV; - goto unlock; - } - - cb->response_buffer.size = dev->me_clients[i].props.max_msg_length; - cb->response_buffer.data = - kmalloc(cb->response_buffer.size, GFP_KERNEL); - if (!cb->response_buffer.data) { - rets = -ENOMEM; - goto unlock; - } - dev_dbg(&dev->pdev->dev, "allocation call back data success.\n"); - cb->major_file_operations = MEI_READ; - /* make sure information is zero before we start */ - cb->information = 0; - cb->file_private = (void *) cl; - cl->read_cb = cb; - if (dev->mei_host_buffer_is_empty) { - dev->mei_host_buffer_is_empty = false; - if (mei_send_flow_control(dev, cl)) { - rets = -ENODEV; - goto unlock; - } - list_add_tail(&cb->cb_list, &dev->read_list.mei_cb.cb_list); - } else { - list_add_tail(&cb->cb_list, &dev->ctrl_wr_list.mei_cb.cb_list); - } - return rets; -unlock: - mei_free_cb_private(cb); - return rets; -} - -/** - * amthi_write - write iamthif data to amthi client - * - * @dev: the device structure - * @cb: mei call back struct - * - * returns 0 on success, <0 on failure. - */ -int amthi_write(struct mei_device *dev, struct mei_cl_cb *cb) -{ - struct mei_msg_hdr mei_hdr; - int ret; - - if (!dev || !cb) - return -ENODEV; - - dev_dbg(&dev->pdev->dev, "write data to amthi client.\n"); - - dev->iamthif_state = MEI_IAMTHIF_WRITING; - dev->iamthif_current_cb = cb; - dev->iamthif_file_object = cb->file_object; - dev->iamthif_canceled = false; - dev->iamthif_ioctl = true; - dev->iamthif_msg_buf_size = cb->request_buffer.size; - memcpy(dev->iamthif_msg_buf, cb->request_buffer.data, - cb->request_buffer.size); - - ret = mei_flow_ctrl_creds(dev, &dev->iamthif_cl); - if (ret < 0) - return ret; - - if (ret && dev->mei_host_buffer_is_empty) { - ret = 0; - dev->mei_host_buffer_is_empty = false; - if (cb->request_buffer.size > - (((dev->host_hw_state & H_CBD) >> 24) * sizeof(u32)) - -sizeof(struct mei_msg_hdr)) { - mei_hdr.length = - (((dev->host_hw_state & H_CBD) >> 24) * - sizeof(u32)) - sizeof(struct mei_msg_hdr); - mei_hdr.msg_complete = 0; - } else { - mei_hdr.length = cb->request_buffer.size; - mei_hdr.msg_complete = 1; - } - - mei_hdr.host_addr = dev->iamthif_cl.host_client_id; - mei_hdr.me_addr = dev->iamthif_cl.me_client_id; - mei_hdr.reserved = 0; - dev->iamthif_msg_buf_index += mei_hdr.length; - if (mei_write_message(dev, &mei_hdr, - (unsigned char *)(dev->iamthif_msg_buf), - mei_hdr.length)) - return -ENODEV; - - if (mei_hdr.msg_complete) { - if (mei_flow_ctrl_reduce(dev, &dev->iamthif_cl)) - return -ENODEV; - dev->iamthif_flow_control_pending = true; - dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL; - dev_dbg(&dev->pdev->dev, "add amthi cb to write waiting list\n"); - dev->iamthif_current_cb = cb; - dev->iamthif_file_object = cb->file_object; - list_add_tail(&cb->cb_list, - &dev->write_waiting_list.mei_cb.cb_list); - } else { - dev_dbg(&dev->pdev->dev, "message does not complete, " - "so add amthi cb to write list.\n"); - list_add_tail(&cb->cb_list, - &dev->write_list.mei_cb.cb_list); - } - } else { - if (!(dev->mei_host_buffer_is_empty)) - dev_dbg(&dev->pdev->dev, "host buffer is not empty"); - - dev_dbg(&dev->pdev->dev, "No flow control credentials, " - "so add iamthif cb to write list.\n"); - list_add_tail(&cb->cb_list, &dev->write_list.mei_cb.cb_list); - } - return 0; -} - -/** - * iamthif_ioctl_send_msg - send cmd data to amthi client - * - * @dev: the device structure - * - * returns 0 on success, <0 on failure. - */ -void mei_run_next_iamthif_cmd(struct mei_device *dev) -{ - struct mei_cl *cl_tmp; - struct mei_cl_cb *pos = NULL; - struct mei_cl_cb *next = NULL; - int status; - - if (!dev) - return; - - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = false; - dev->iamthif_ioctl = true; - dev->iamthif_state = MEI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; - dev->iamthif_file_object = NULL; - - dev_dbg(&dev->pdev->dev, "complete amthi cmd_list cb.\n"); - - list_for_each_entry_safe(pos, next, - &dev->amthi_cmd_list.mei_cb.cb_list, cb_list) { - list_del(&pos->cb_list); - cl_tmp = (struct mei_cl *)pos->file_private; - - if (cl_tmp && cl_tmp == &dev->iamthif_cl) { - status = amthi_write(dev, pos); - if (status) { - dev_dbg(&dev->pdev->dev, - "amthi write failed status = %d\n", - status); - return; - } - break; - } - } -} - -/** - * mei_free_cb_private - free mei_cb_private related memory - * - * @cb: mei callback struct - */ -void mei_free_cb_private(struct mei_cl_cb *cb) -{ - if (cb == NULL) - return; - - kfree(cb->request_buffer.data); - kfree(cb->response_buffer.data); - kfree(cb); -} diff --git a/drivers/staging/mei/main.c b/drivers/staging/mei/main.c deleted file mode 100644 index 7c9321f..0000000 --- a/drivers/staging/mei/main.c +++ /dev/null @@ -1,1237 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/aio.h> -#include <linux/pci.h> -#include <linux/poll.h> -#include <linux/init.h> -#include <linux/ioctl.h> -#include <linux/cdev.h> -#include <linux/sched.h> -#include <linux/uuid.h> -#include <linux/compat.h> -#include <linux/jiffies.h> -#include <linux/interrupt.h> -#include <linux/miscdevice.h> - -#include "mei_dev.h" -#include "mei.h" -#include "interface.h" - - -#define MEI_READ_TIMEOUT 45 -#define MEI_DRIVER_NAME "mei" -#define MEI_DEV_NAME "mei" - -/* - * mei driver strings - */ -static char mei_driver_name[] = MEI_DRIVER_NAME; -static const char mei_driver_string[] = "Intel(R) Management Engine Interface"; - -/* The device pointer */ -/* Currently this driver works as long as there is only a single AMT device. */ -struct pci_dev *mei_device; - -/* mei_pci_tbl - PCI Device ID Table */ -static DEFINE_PCI_DEVICE_TABLE(mei_pci_tbl) = { - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82946GZ)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G35)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82Q965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82GM965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82GME965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82Q35)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82G33)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82Q33)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82X38)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_3200)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_6)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_7)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_8)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_9)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_10)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_2)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_3)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_4)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_2)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_3)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_4)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_IBXPK_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_IBXPK_2)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_CPT_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PBG_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_2)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_3)}, - - /* required last entry */ - {0, } -}; - -MODULE_DEVICE_TABLE(pci, mei_pci_tbl); - -static DEFINE_MUTEX(mei_mutex); - - -/** - * mei_clear_list - removes all callbacks associated with file - * from mei_cb_list - * - * @dev: device structure. - * @file: file structure - * @mei_cb_list: callbacks list - * - * mei_clear_list is called to clear resources associated with file - * when application calls close function or Ctrl-C was pressed - * - * returns true if callback removed from the list, false otherwise - */ -static bool mei_clear_list(struct mei_device *dev, - struct file *file, struct list_head *mei_cb_list) -{ - struct mei_cl_cb *cb_pos = NULL; - struct mei_cl_cb *cb_next = NULL; - struct file *file_temp; - bool removed = false; - - /* list all list member */ - list_for_each_entry_safe(cb_pos, cb_next, mei_cb_list, cb_list) { - file_temp = (struct file *)cb_pos->file_object; - /* check if list member associated with a file */ - if (file_temp == file) { - /* remove member from the list */ - list_del(&cb_pos->cb_list); - /* check if cb equal to current iamthif cb */ - if (dev->iamthif_current_cb == cb_pos) { - dev->iamthif_current_cb = NULL; - /* send flow control to iamthif client */ - mei_send_flow_control(dev, &dev->iamthif_cl); - } - /* free all allocated buffers */ - mei_free_cb_private(cb_pos); - cb_pos = NULL; - removed = true; - } - } - return removed; -} - -/** - * mei_clear_lists - removes all callbacks associated with file - * - * @dev: device structure - * @file: file structure - * - * mei_clear_lists is called to clear resources associated with file - * when application calls close function or Ctrl-C was pressed - * - * returns true if callback removed from the list, false otherwise - */ -static bool mei_clear_lists(struct mei_device *dev, struct file *file) -{ - bool removed = false; - - /* remove callbacks associated with a file */ - mei_clear_list(dev, file, &dev->amthi_cmd_list.mei_cb.cb_list); - if (mei_clear_list(dev, file, - &dev->amthi_read_complete_list.mei_cb.cb_list)) - removed = true; - - mei_clear_list(dev, file, &dev->ctrl_rd_list.mei_cb.cb_list); - - if (mei_clear_list(dev, file, &dev->ctrl_wr_list.mei_cb.cb_list)) - removed = true; - - if (mei_clear_list(dev, file, &dev->write_waiting_list.mei_cb.cb_list)) - removed = true; - - if (mei_clear_list(dev, file, &dev->write_list.mei_cb.cb_list)) - removed = true; - - /* check if iamthif_current_cb not NULL */ - if (dev->iamthif_current_cb && !removed) { - /* check file and iamthif current cb association */ - if (dev->iamthif_current_cb->file_object == file) { - /* remove cb */ - mei_free_cb_private(dev->iamthif_current_cb); - dev->iamthif_current_cb = NULL; - removed = true; - } - } - return removed; -} -/** - * find_read_list_entry - find read list entry - * - * @dev: device structure - * @file: pointer to file structure - * - * returns cb on success, NULL on error - */ -static struct mei_cl_cb *find_read_list_entry( - struct mei_device *dev, - struct mei_cl *cl) -{ - struct mei_cl_cb *pos = NULL; - struct mei_cl_cb *next = NULL; - - dev_dbg(&dev->pdev->dev, "remove read_list CB\n"); - list_for_each_entry_safe(pos, next, - &dev->read_list.mei_cb.cb_list, cb_list) { - struct mei_cl *cl_temp; - cl_temp = (struct mei_cl *)pos->file_private; - - if (mei_cl_cmp_id(cl, cl_temp)) - return pos; - } - return NULL; -} - -/** - * mei_open - the open function - * - * @inode: pointer to inode structure - * @file: pointer to file structure - * - * returns 0 on success, <0 on error - */ -static int mei_open(struct inode *inode, struct file *file) -{ - struct mei_cl *cl; - struct mei_device *dev; - unsigned long cl_id; - int err; - - err = -ENODEV; - if (!mei_device) - goto out; - - dev = pci_get_drvdata(mei_device); - if (!dev) - goto out; - - mutex_lock(&dev->device_lock); - err = -ENOMEM; - cl = mei_cl_allocate(dev); - if (!cl) - goto out_unlock; - - err = -ENODEV; - if (dev->mei_state != MEI_ENABLED) { - dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED mei_state= %d\n", - dev->mei_state); - goto out_unlock; - } - err = -EMFILE; - if (dev->open_handle_count >= MEI_MAX_OPEN_HANDLE_COUNT) - goto out_unlock; - - cl_id = find_first_zero_bit(dev->host_clients_map, MEI_CLIENTS_MAX); - if (cl_id >= MEI_CLIENTS_MAX) - goto out_unlock; - - cl->host_client_id = cl_id; - - dev_dbg(&dev->pdev->dev, "client_id = %d\n", cl->host_client_id); - - dev->open_handle_count++; - - list_add_tail(&cl->link, &dev->file_list); - - set_bit(cl->host_client_id, dev->host_clients_map); - cl->state = MEI_FILE_INITIALIZING; - cl->sm_state = 0; - - file->private_data = cl; - mutex_unlock(&dev->device_lock); - - return nonseekable_open(inode, file); - -out_unlock: - mutex_unlock(&dev->device_lock); - kfree(cl); -out: - return err; -} - -/** - * mei_release - the release function - * - * @inode: pointer to inode structure - * @file: pointer to file structure - * - * returns 0 on success, <0 on error - */ -static int mei_release(struct inode *inode, struct file *file) -{ - struct mei_cl *cl = file->private_data; - struct mei_cl_cb *cb; - struct mei_device *dev; - int rets = 0; - - if (WARN_ON(!cl || !cl->dev)) - return -ENODEV; - - dev = cl->dev; - - mutex_lock(&dev->device_lock); - if (cl != &dev->iamthif_cl) { - if (cl->state == MEI_FILE_CONNECTED) { - cl->state = MEI_FILE_DISCONNECTING; - dev_dbg(&dev->pdev->dev, - "disconnecting client host client = %d, " - "ME client = %d\n", - cl->host_client_id, - cl->me_client_id); - rets = mei_disconnect_host_client(dev, cl); - } - mei_cl_flush_queues(cl); - dev_dbg(&dev->pdev->dev, "remove client host client = %d, ME client = %d\n", - cl->host_client_id, - cl->me_client_id); - - if (dev->open_handle_count > 0) { - clear_bit(cl->host_client_id, dev->host_clients_map); - dev->open_handle_count--; - } - mei_remove_client_from_file_list(dev, cl->host_client_id); - - /* free read cb */ - cb = NULL; - if (cl->read_cb) { - cb = find_read_list_entry(dev, cl); - /* Remove entry from read list */ - if (cb) - list_del(&cb->cb_list); - - cb = cl->read_cb; - cl->read_cb = NULL; - } - - file->private_data = NULL; - - if (cb) { - mei_free_cb_private(cb); - cb = NULL; - } - - kfree(cl); - } else { - if (dev->open_handle_count > 0) - dev->open_handle_count--; - - if (dev->iamthif_file_object == file && - dev->iamthif_state != MEI_IAMTHIF_IDLE) { - - dev_dbg(&dev->pdev->dev, "amthi canceled iamthif state %d\n", - dev->iamthif_state); - dev->iamthif_canceled = true; - if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) { - dev_dbg(&dev->pdev->dev, "run next amthi iamthif cb\n"); - mei_run_next_iamthif_cmd(dev); - } - } - - if (mei_clear_lists(dev, file)) - dev->iamthif_state = MEI_IAMTHIF_IDLE; - - } - mutex_unlock(&dev->device_lock); - return rets; -} - - -/** - * mei_read - the read function. - * - * @file: pointer to file structure - * @ubuf: pointer to user buffer - * @length: buffer length - * @offset: data offset in buffer - * - * returns >=0 data length on success , <0 on error - */ -static ssize_t mei_read(struct file *file, char __user *ubuf, - size_t length, loff_t *offset) -{ - struct mei_cl *cl = file->private_data; - struct mei_cl_cb *cb_pos = NULL; - struct mei_cl_cb *cb = NULL; - struct mei_device *dev; - int i; - int rets; - int err; - - - if (WARN_ON(!cl || !cl->dev)) - return -ENODEV; - - dev = cl->dev; - - mutex_lock(&dev->device_lock); - if (dev->mei_state != MEI_ENABLED) { - rets = -ENODEV; - goto out; - } - - if ((cl->sm_state & MEI_WD_STATE_INDEPENDENCE_MSG_SENT) == 0) { - /* Do not allow to read watchdog client */ - i = mei_find_me_client_index(dev, mei_wd_guid); - if (i >= 0) { - struct mei_me_client *me_client = &dev->me_clients[i]; - - if (cl->me_client_id == me_client->client_id) { - rets = -EBADF; - goto out; - } - } - } else { - cl->sm_state &= ~MEI_WD_STATE_INDEPENDENCE_MSG_SENT; - } - - if (cl == &dev->iamthif_cl) { - rets = amthi_read(dev, file, ubuf, length, offset); - goto out; - } - - if (cl->read_cb && cl->read_cb->information > *offset) { - cb = cl->read_cb; - goto copy_buffer; - } else if (cl->read_cb && cl->read_cb->information > 0 && - cl->read_cb->information <= *offset) { - cb = cl->read_cb; - rets = 0; - goto free; - } else if ((!cl->read_cb || !cl->read_cb->information) && - *offset > 0) { - /*Offset needs to be cleaned for contiguous reads*/ - *offset = 0; - rets = 0; - goto out; - } - - err = mei_start_read(dev, cl); - if (err && err != -EBUSY) { - dev_dbg(&dev->pdev->dev, - "mei start read failure with status = %d\n", err); - rets = err; - goto out; - } - - if (MEI_READ_COMPLETE != cl->reading_state && - !waitqueue_active(&cl->rx_wait)) { - if (file->f_flags & O_NONBLOCK) { - rets = -EAGAIN; - goto out; - } - - mutex_unlock(&dev->device_lock); - - if (wait_event_interruptible(cl->rx_wait, - (MEI_READ_COMPLETE == cl->reading_state || - MEI_FILE_INITIALIZING == cl->state || - MEI_FILE_DISCONNECTED == cl->state || - MEI_FILE_DISCONNECTING == cl->state))) { - if (signal_pending(current)) - return -EINTR; - return -ERESTARTSYS; - } - - mutex_lock(&dev->device_lock); - if (MEI_FILE_INITIALIZING == cl->state || - MEI_FILE_DISCONNECTED == cl->state || - MEI_FILE_DISCONNECTING == cl->state) { - rets = -EBUSY; - goto out; - } - } - - cb = cl->read_cb; - - if (!cb) { - rets = -ENODEV; - goto out; - } - if (cl->reading_state != MEI_READ_COMPLETE) { - rets = 0; - goto out; - } - /* now copy the data to user space */ -copy_buffer: - dev_dbg(&dev->pdev->dev, "cb->response_buffer size - %d\n", - cb->response_buffer.size); - dev_dbg(&dev->pdev->dev, "cb->information - %lu\n", - cb->information); - if (length == 0 || ubuf == NULL || *offset > cb->information) { - rets = -EMSGSIZE; - goto free; - } - - /* length is being truncated to PAGE_SIZE, however, */ - /* information size may be longer */ - length = min_t(size_t, length, (cb->information - *offset)); - - if (copy_to_user(ubuf, cb->response_buffer.data + *offset, length)) { - rets = -EFAULT; - goto free; - } - - rets = length; - *offset += length; - if ((unsigned long)*offset < cb->information) - goto out; - -free: - cb_pos = find_read_list_entry(dev, cl); - /* Remove entry from read list */ - if (cb_pos) - list_del(&cb_pos->cb_list); - mei_free_cb_private(cb); - cl->reading_state = MEI_IDLE; - cl->read_cb = NULL; - cl->read_pending = 0; -out: - dev_dbg(&dev->pdev->dev, "end mei read rets= %d\n", rets); - mutex_unlock(&dev->device_lock); - return rets; -} - -/** - * mei_write - the write function. - * - * @file: pointer to file structure - * @ubuf: pointer to user buffer - * @length: buffer length - * @offset: data offset in buffer - * - * returns >=0 data length on success , <0 on error - */ -static ssize_t mei_write(struct file *file, const char __user *ubuf, - size_t length, loff_t *offset) -{ - struct mei_cl *cl = file->private_data; - struct mei_cl_cb *write_cb = NULL; - struct mei_msg_hdr mei_hdr; - struct mei_device *dev; - unsigned long timeout = 0; - int rets; - int i; - - if (WARN_ON(!cl || !cl->dev)) - return -ENODEV; - - dev = cl->dev; - - mutex_lock(&dev->device_lock); - - if (dev->mei_state != MEI_ENABLED) { - mutex_unlock(&dev->device_lock); - return -ENODEV; - } - - if (cl == &dev->iamthif_cl) { - write_cb = find_amthi_read_list_entry(dev, file); - - if (write_cb) { - timeout = write_cb->read_time + - msecs_to_jiffies(IAMTHIF_READ_TIMER); - - if (time_after(jiffies, timeout) || - cl->reading_state == MEI_READ_COMPLETE) { - *offset = 0; - list_del(&write_cb->cb_list); - mei_free_cb_private(write_cb); - write_cb = NULL; - } - } - } - - /* free entry used in read */ - if (cl->reading_state == MEI_READ_COMPLETE) { - *offset = 0; - write_cb = find_read_list_entry(dev, cl); - if (write_cb) { - list_del(&write_cb->cb_list); - mei_free_cb_private(write_cb); - write_cb = NULL; - cl->reading_state = MEI_IDLE; - cl->read_cb = NULL; - cl->read_pending = 0; - } - } else if (cl->reading_state == MEI_IDLE && !cl->read_pending) - *offset = 0; - - - write_cb = kzalloc(sizeof(struct mei_cl_cb), GFP_KERNEL); - if (!write_cb) { - mutex_unlock(&dev->device_lock); - return -ENOMEM; - } - - write_cb->file_object = file; - write_cb->file_private = cl; - write_cb->request_buffer.data = kmalloc(length, GFP_KERNEL); - rets = -ENOMEM; - if (!write_cb->request_buffer.data) - goto unlock_dev; - - dev_dbg(&dev->pdev->dev, "length =%d\n", (int) length); - - rets = -EFAULT; - if (copy_from_user(write_cb->request_buffer.data, ubuf, length)) - goto unlock_dev; - - cl->sm_state = 0; - if (length == 4 && - ((memcmp(mei_wd_state_independence_msg[0], - write_cb->request_buffer.data, 4) == 0) || - (memcmp(mei_wd_state_independence_msg[1], - write_cb->request_buffer.data, 4) == 0) || - (memcmp(mei_wd_state_independence_msg[2], - write_cb->request_buffer.data, 4) == 0))) - cl->sm_state |= MEI_WD_STATE_INDEPENDENCE_MSG_SENT; - - INIT_LIST_HEAD(&write_cb->cb_list); - if (cl == &dev->iamthif_cl) { - write_cb->response_buffer.data = - kmalloc(dev->iamthif_mtu, GFP_KERNEL); - if (!write_cb->response_buffer.data) { - rets = -ENOMEM; - goto unlock_dev; - } - if (dev->mei_state != MEI_ENABLED) { - rets = -ENODEV; - goto unlock_dev; - } - for (i = 0; i < dev->me_clients_num; i++) { - if (dev->me_clients[i].client_id == - dev->iamthif_cl.me_client_id) - break; - } - - if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) { - rets = -ENODEV; - goto unlock_dev; - } - if (i == dev->me_clients_num || - (dev->me_clients[i].client_id != - dev->iamthif_cl.me_client_id)) { - rets = -ENODEV; - goto unlock_dev; - } else if (length > dev->me_clients[i].props.max_msg_length || - length <= 0) { - rets = -EMSGSIZE; - goto unlock_dev; - } - - write_cb->response_buffer.size = dev->iamthif_mtu; - write_cb->major_file_operations = MEI_IOCTL; - write_cb->information = 0; - write_cb->request_buffer.size = length; - if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) { - rets = -ENODEV; - goto unlock_dev; - } - - if (!list_empty(&dev->amthi_cmd_list.mei_cb.cb_list) || - dev->iamthif_state != MEI_IAMTHIF_IDLE) { - dev_dbg(&dev->pdev->dev, "amthi_state = %d\n", - (int) dev->iamthif_state); - dev_dbg(&dev->pdev->dev, "add amthi cb to amthi cmd waiting list\n"); - list_add_tail(&write_cb->cb_list, - &dev->amthi_cmd_list.mei_cb.cb_list); - rets = length; - } else { - dev_dbg(&dev->pdev->dev, "call amthi write\n"); - rets = amthi_write(dev, write_cb); - - if (rets) { - dev_dbg(&dev->pdev->dev, "amthi write failed with status = %d\n", - rets); - goto unlock_dev; - } - rets = length; - } - mutex_unlock(&dev->device_lock); - return rets; - } - - write_cb->major_file_operations = MEI_WRITE; - /* make sure information is zero before we start */ - - write_cb->information = 0; - write_cb->request_buffer.size = length; - - dev_dbg(&dev->pdev->dev, "host client = %d, ME client = %d\n", - cl->host_client_id, cl->me_client_id); - if (cl->state != MEI_FILE_CONNECTED) { - rets = -ENODEV; - dev_dbg(&dev->pdev->dev, "host client = %d, is not connected to ME client = %d", - cl->host_client_id, - cl->me_client_id); - goto unlock_dev; - } - for (i = 0; i < dev->me_clients_num; i++) { - if (dev->me_clients[i].client_id == - cl->me_client_id) - break; - } - if (WARN_ON(dev->me_clients[i].client_id != cl->me_client_id)) { - rets = -ENODEV; - goto unlock_dev; - } - if (i == dev->me_clients_num) { - rets = -ENODEV; - goto unlock_dev; - } - if (length > dev->me_clients[i].props.max_msg_length || length <= 0) { - rets = -EINVAL; - goto unlock_dev; - } - write_cb->file_private = cl; - - rets = mei_flow_ctrl_creds(dev, cl); - if (rets < 0) - goto unlock_dev; - - if (rets && dev->mei_host_buffer_is_empty) { - rets = 0; - dev->mei_host_buffer_is_empty = false; - if (length > ((((dev->host_hw_state & H_CBD) >> 24) * - sizeof(u32)) - sizeof(struct mei_msg_hdr))) { - - mei_hdr.length = - (((dev->host_hw_state & H_CBD) >> 24) * - sizeof(u32)) - - sizeof(struct mei_msg_hdr); - mei_hdr.msg_complete = 0; - } else { - mei_hdr.length = length; - mei_hdr.msg_complete = 1; - } - mei_hdr.host_addr = cl->host_client_id; - mei_hdr.me_addr = cl->me_client_id; - mei_hdr.reserved = 0; - dev_dbg(&dev->pdev->dev, "call mei_write_message header=%08x.\n", - *((u32 *) &mei_hdr)); - if (mei_write_message(dev, &mei_hdr, - (unsigned char *) (write_cb->request_buffer.data), - mei_hdr.length)) { - rets = -ENODEV; - goto unlock_dev; - } - cl->writing_state = MEI_WRITING; - write_cb->information = mei_hdr.length; - if (mei_hdr.msg_complete) { - if (mei_flow_ctrl_reduce(dev, cl)) { - rets = -ENODEV; - goto unlock_dev; - } - list_add_tail(&write_cb->cb_list, - &dev->write_waiting_list.mei_cb.cb_list); - } else { - list_add_tail(&write_cb->cb_list, - &dev->write_list.mei_cb.cb_list); - } - - } else { - - write_cb->information = 0; - cl->writing_state = MEI_WRITING; - list_add_tail(&write_cb->cb_list, - &dev->write_list.mei_cb.cb_list); - } - mutex_unlock(&dev->device_lock); - return length; - -unlock_dev: - mutex_unlock(&dev->device_lock); - mei_free_cb_private(write_cb); - return rets; -} - - -/** - * mei_ioctl - the IOCTL function - * - * @file: pointer to file structure - * @cmd: ioctl command - * @data: pointer to mei message structure - * - * returns 0 on success , <0 on error - */ -static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) -{ - struct mei_device *dev; - struct mei_cl *cl = file->private_data; - struct mei_connect_client_data *connect_data = NULL; - int rets; - - if (cmd != IOCTL_MEI_CONNECT_CLIENT) - return -EINVAL; - - if (WARN_ON(!cl || !cl->dev)) - return -ENODEV; - - dev = cl->dev; - - dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd); - - mutex_lock(&dev->device_lock); - if (dev->mei_state != MEI_ENABLED) { - rets = -ENODEV; - goto out; - } - - dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n"); - - connect_data = kzalloc(sizeof(struct mei_connect_client_data), - GFP_KERNEL); - if (!connect_data) { - rets = -ENOMEM; - goto out; - } - dev_dbg(&dev->pdev->dev, "copy connect data from user\n"); - if (copy_from_user(connect_data, (char __user *)data, - sizeof(struct mei_connect_client_data))) { - dev_dbg(&dev->pdev->dev, "failed to copy data from userland\n"); - rets = -EFAULT; - goto out; - } - rets = mei_ioctl_connect_client(file, connect_data); - - /* if all is ok, copying the data back to user. */ - if (rets) - goto out; - - dev_dbg(&dev->pdev->dev, "copy connect data to user\n"); - if (copy_to_user((char __user *)data, connect_data, - sizeof(struct mei_connect_client_data))) { - dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n"); - rets = -EFAULT; - goto out; - } - -out: - kfree(connect_data); - mutex_unlock(&dev->device_lock); - return rets; -} - -/** - * mei_compat_ioctl - the compat IOCTL function - * - * @file: pointer to file structure - * @cmd: ioctl command - * @data: pointer to mei message structure - * - * returns 0 on success , <0 on error - */ -#ifdef CONFIG_COMPAT -static long mei_compat_ioctl(struct file *file, - unsigned int cmd, unsigned long data) -{ - return mei_ioctl(file, cmd, (unsigned long)compat_ptr(data)); -} -#endif - - -/** - * mei_poll - the poll function - * - * @file: pointer to file structure - * @wait: pointer to poll_table structure - * - * returns poll mask - */ -static unsigned int mei_poll(struct file *file, poll_table *wait) -{ - struct mei_cl *cl = file->private_data; - struct mei_device *dev; - unsigned int mask = 0; - - if (WARN_ON(!cl || !cl->dev)) - return mask; - - dev = cl->dev; - - mutex_lock(&dev->device_lock); - - if (dev->mei_state != MEI_ENABLED) - goto out; - - - if (cl == &dev->iamthif_cl) { - mutex_unlock(&dev->device_lock); - poll_wait(file, &dev->iamthif_cl.wait, wait); - mutex_lock(&dev->device_lock); - if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE && - dev->iamthif_file_object == file) { - mask |= (POLLIN | POLLRDNORM); - dev_dbg(&dev->pdev->dev, "run next amthi cb\n"); - mei_run_next_iamthif_cmd(dev); - } - goto out; - } - - mutex_unlock(&dev->device_lock); - poll_wait(file, &cl->tx_wait, wait); - mutex_lock(&dev->device_lock); - if (MEI_WRITE_COMPLETE == cl->writing_state) - mask |= (POLLIN | POLLRDNORM); - -out: - mutex_unlock(&dev->device_lock); - return mask; -} - -/* - * file operations structure will be used for mei char device. - */ -static const struct file_operations mei_fops = { - .owner = THIS_MODULE, - .read = mei_read, - .unlocked_ioctl = mei_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = mei_compat_ioctl, -#endif - .open = mei_open, - .release = mei_release, - .write = mei_write, - .poll = mei_poll, - .llseek = no_llseek -}; - - -/* - * Misc Device Struct - */ -static struct miscdevice mei_misc_device = { - .name = MEI_DRIVER_NAME, - .fops = &mei_fops, - .minor = MISC_DYNAMIC_MINOR, -}; - -/** - * mei_probe - Device Initialization Routine - * - * @pdev: PCI device structure - * @ent: entry in kcs_pci_tbl - * - * returns 0 on success, <0 on failure. - */ -static int __devinit mei_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct mei_device *dev; - int err; - - mutex_lock(&mei_mutex); - if (mei_device) { - err = -EEXIST; - goto end; - } - /* enable pci dev */ - err = pci_enable_device(pdev); - if (err) { - printk(KERN_ERR "mei: Failed to enable pci device.\n"); - goto end; - } - /* set PCI host mastering */ - pci_set_master(pdev); - /* pci request regions for mei driver */ - err = pci_request_regions(pdev, mei_driver_name); - if (err) { - printk(KERN_ERR "mei: Failed to get pci regions.\n"); - goto disable_device; - } - /* allocates and initializes the mei dev structure */ - dev = mei_device_init(pdev); - if (!dev) { - err = -ENOMEM; - goto release_regions; - } - /* mapping IO device memory */ - dev->mem_addr = pci_iomap(pdev, 0, 0); - if (!dev->mem_addr) { - printk(KERN_ERR "mei: mapping I/O device memory failure.\n"); - err = -ENOMEM; - goto free_device; - } - pci_enable_msi(pdev); - - /* request and enable interrupt */ - if (pci_dev_msi_enabled(pdev)) - err = request_threaded_irq(pdev->irq, - NULL, - mei_interrupt_thread_handler, - 0, mei_driver_name, dev); - else - err = request_threaded_irq(pdev->irq, - mei_interrupt_quick_handler, - mei_interrupt_thread_handler, - IRQF_SHARED, mei_driver_name, dev); - - if (err) { - printk(KERN_ERR "mei: request_threaded_irq failure. irq = %d\n", - pdev->irq); - goto unmap_memory; - } - INIT_DELAYED_WORK(&dev->timer_work, mei_timer); - if (mei_hw_init(dev)) { - printk(KERN_ERR "mei: Init hw failure.\n"); - err = -ENODEV; - goto release_irq; - } - - err = misc_register(&mei_misc_device); - if (err) - goto release_irq; - - mei_device = pdev; - pci_set_drvdata(pdev, dev); - - - schedule_delayed_work(&dev->timer_work, HZ); - - mutex_unlock(&mei_mutex); - - pr_debug("mei: Driver initialization successful.\n"); - - return 0; - -release_irq: - /* disable interrupts */ - dev->host_hw_state = mei_hcsr_read(dev); - mei_disable_interrupts(dev); - flush_scheduled_work(); - free_irq(pdev->irq, dev); - pci_disable_msi(pdev); -unmap_memory: - pci_iounmap(pdev, dev->mem_addr); -free_device: - kfree(dev); -release_regions: - pci_release_regions(pdev); -disable_device: - pci_disable_device(pdev); -end: - mutex_unlock(&mei_mutex); - printk(KERN_ERR "mei: Driver initialization failed.\n"); - return err; -} - -/** - * mei_remove - Device Removal Routine - * - * @pdev: PCI device structure - * - * mei_remove is called by the PCI subsystem to alert the driver - * that it should release a PCI device. - */ -static void __devexit mei_remove(struct pci_dev *pdev) -{ - struct mei_device *dev; - - if (mei_device != pdev) - return; - - dev = pci_get_drvdata(pdev); - if (!dev) - return; - - mutex_lock(&dev->device_lock); - - mei_wd_stop(dev, false); - - mei_device = NULL; - - if (dev->iamthif_cl.state == MEI_FILE_CONNECTED) { - dev->iamthif_cl.state = MEI_FILE_DISCONNECTING; - mei_disconnect_host_client(dev, &dev->iamthif_cl); - } - if (dev->wd_cl.state == MEI_FILE_CONNECTED) { - dev->wd_cl.state = MEI_FILE_DISCONNECTING; - mei_disconnect_host_client(dev, &dev->wd_cl); - } - - /* Unregistering watchdog device */ - mei_watchdog_unregister(dev); - - /* remove entry if already in list */ - dev_dbg(&pdev->dev, "list del iamthif and wd file list.\n"); - mei_remove_client_from_file_list(dev, dev->wd_cl.host_client_id); - mei_remove_client_from_file_list(dev, dev->iamthif_cl.host_client_id); - - dev->iamthif_current_cb = NULL; - dev->me_clients_num = 0; - - mutex_unlock(&dev->device_lock); - - flush_scheduled_work(); - - /* disable interrupts */ - mei_disable_interrupts(dev); - - free_irq(pdev->irq, dev); - pci_disable_msi(pdev); - pci_set_drvdata(pdev, NULL); - - if (dev->mem_addr) - pci_iounmap(pdev, dev->mem_addr); - - kfree(dev); - - pci_release_regions(pdev); - pci_disable_device(pdev); -} -#ifdef CONFIG_PM -static int mei_pci_suspend(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct mei_device *dev = pci_get_drvdata(pdev); - int err; - - if (!dev) - return -ENODEV; - mutex_lock(&dev->device_lock); - /* Stop watchdog if exists */ - err = mei_wd_stop(dev, true); - /* Set new mei state */ - if (dev->mei_state == MEI_ENABLED || - dev->mei_state == MEI_RECOVERING_FROM_RESET) { - dev->mei_state = MEI_POWER_DOWN; - mei_reset(dev, 0); - } - mutex_unlock(&dev->device_lock); - - free_irq(pdev->irq, dev); - pci_disable_msi(pdev); - - return err; -} - -static int mei_pci_resume(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - struct mei_device *dev; - int err; - - dev = pci_get_drvdata(pdev); - if (!dev) - return -ENODEV; - - pci_enable_msi(pdev); - - /* request and enable interrupt */ - if (pci_dev_msi_enabled(pdev)) - err = request_threaded_irq(pdev->irq, - NULL, - mei_interrupt_thread_handler, - 0, mei_driver_name, dev); - else - err = request_threaded_irq(pdev->irq, - mei_interrupt_quick_handler, - mei_interrupt_thread_handler, - IRQF_SHARED, mei_driver_name, dev); - - if (err) { - printk(KERN_ERR "mei: Request_irq failure. irq = %d\n", - pdev->irq); - return err; - } - - mutex_lock(&dev->device_lock); - dev->mei_state = MEI_POWER_UP; - mei_reset(dev, 1); - mutex_unlock(&dev->device_lock); - - /* Start timer if stopped in suspend */ - schedule_delayed_work(&dev->timer_work, HZ); - - return err; -} -static SIMPLE_DEV_PM_OPS(mei_pm_ops, mei_pci_suspend, mei_pci_resume); -#define MEI_PM_OPS (&mei_pm_ops) -#else -#define MEI_PM_OPS NULL -#endif /* CONFIG_PM */ -/* - * PCI driver structure - */ -static struct pci_driver mei_driver = { - .name = mei_driver_name, - .id_table = mei_pci_tbl, - .probe = mei_probe, - .remove = __devexit_p(mei_remove), - .shutdown = __devexit_p(mei_remove), - .driver.pm = MEI_PM_OPS, -}; - -/** - * mei_init_module - Driver Registration Routine - * - * mei_init_module is the first routine called when the driver is - * loaded. All it does is to register with the PCI subsystem. - * - * returns 0 on success, <0 on failure. - */ -static int __init mei_init_module(void) -{ - int ret; - - pr_debug("mei: %s\n", mei_driver_string); - /* init pci module */ - ret = pci_register_driver(&mei_driver); - if (ret < 0) - printk(KERN_ERR "mei: Error registering driver.\n"); - - return ret; -} - -module_init(mei_init_module); - -/** - * mei_exit_module - Driver Exit Cleanup Routine - * - * mei_exit_module is called just before the driver is removed - * from memory. - */ -static void __exit mei_exit_module(void) -{ - misc_deregister(&mei_misc_device); - pci_unregister_driver(&mei_driver); - - pr_debug("mei: Driver unloaded successfully.\n"); -} - -module_exit(mei_exit_module); - - -MODULE_AUTHOR("Intel Corporation"); -MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/mei/mei-amt-version.c b/drivers/staging/mei/mei-amt-version.c deleted file mode 100644 index ac2a507..0000000 --- a/drivers/staging/mei/mei-amt-version.c +++ /dev/null @@ -1,481 +0,0 @@ -/****************************************************************************** - * Intel Management Engine Interface (Intel MEI) Linux driver - * Intel MEI Interface Header - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2012 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Corporation. - * linux-mei@linux.intel.com - * http://www.intel.com - * - * BSD LICENSE - * - * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include <unistd.h> -#include <errno.h> -#include <stdint.h> -#include <stdbool.h> -#include <bits/wordsize.h> -#include "mei.h" - -/***************************************************************************** - * Intel Management Engine Interface - *****************************************************************************/ - -#define mei_msg(_me, fmt, ARGS...) do { \ - if (_me->verbose) \ - fprintf(stderr, fmt, ##ARGS); \ -} while (0) - -#define mei_err(_me, fmt, ARGS...) do { \ - fprintf(stderr, "Error: " fmt, ##ARGS); \ -} while (0) - -struct mei { - uuid_le guid; - bool initialized; - bool verbose; - unsigned int buf_size; - unsigned char prot_ver; - int fd; -}; - -static void mei_deinit(struct mei *cl) -{ - if (cl->fd != -1) - close(cl->fd); - cl->fd = -1; - cl->buf_size = 0; - cl->prot_ver = 0; - cl->initialized = false; -} - -static bool mei_init(struct mei *me, const uuid_le *guid, - unsigned char req_protocol_version, bool verbose) -{ - int result; - struct mei_client *cl; - struct mei_connect_client_data data; - - mei_deinit(me); - - me->verbose = verbose; - - me->fd = open("/dev/mei", O_RDWR); - if (me->fd == -1) { - mei_err(me, "Cannot establish a handle to the Intel MEI driver\n"); - goto err; - } - memcpy(&me->guid, guid, sizeof(*guid)); - memset(&data, 0, sizeof(data)); - me->initialized = true; - - memcpy(&data.in_client_uuid, &me->guid, sizeof(me->guid)); - result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data); - if (result) { - mei_err(me, "IOCTL_MEI_CONNECT_CLIENT receive message. err=%d\n", result); - goto err; - } - cl = &data.out_client_properties; - mei_msg(me, "max_message_length %d\n", cl->max_msg_length); - mei_msg(me, "protocol_version %d\n", cl->protocol_version); - - if ((req_protocol_version > 0) && - (cl->protocol_version != req_protocol_version)) { - mei_err(me, "Intel MEI protocol version not supported\n"); - goto err; - } - - me->buf_size = cl->max_msg_length; - me->prot_ver = cl->protocol_version; - - return true; -err: - mei_deinit(me); - return false; -} - -static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer, - ssize_t len, unsigned long timeout) -{ - ssize_t rc; - - mei_msg(me, "call read length = %zd\n", len); - - rc = read(me->fd, buffer, len); - if (rc < 0) { - mei_err(me, "read failed with status %zd %s\n", - rc, strerror(errno)); - mei_deinit(me); - } else { - mei_msg(me, "read succeeded with result %zd\n", rc); - } - return rc; -} - -static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer, - ssize_t len, unsigned long timeout) -{ - struct timeval tv; - ssize_t written; - ssize_t rc; - fd_set set; - - tv.tv_sec = timeout / 1000; - tv.tv_usec = (timeout % 1000) * 1000000; - - mei_msg(me, "call write length = %zd\n", len); - - written = write(me->fd, buffer, len); - if (written < 0) { - rc = -errno; - mei_err(me, "write failed with status %zd %s\n", - written, strerror(errno)); - goto out; - } - - FD_ZERO(&set); - FD_SET(me->fd, &set); - rc = select(me->fd + 1 , &set, NULL, NULL, &tv); - if (rc > 0 && FD_ISSET(me->fd, &set)) { - mei_msg(me, "write success\n"); - } else if (rc == 0) { - mei_err(me, "write failed on timeout with status\n"); - goto out; - } else { /* rc < 0 */ - mei_err(me, "write failed on select with status %zd\n", rc); - goto out; - } - - rc = written; -out: - if (rc < 0) - mei_deinit(me); - - return rc; -} - -/*************************************************************************** - * Intel Advanced Management Technolgy ME Client - ***************************************************************************/ - -#define AMT_MAJOR_VERSION 1 -#define AMT_MINOR_VERSION 1 - -#define AMT_STATUS_SUCCESS 0x0 -#define AMT_STATUS_INTERNAL_ERROR 0x1 -#define AMT_STATUS_NOT_READY 0x2 -#define AMT_STATUS_INVALID_AMT_MODE 0x3 -#define AMT_STATUS_INVALID_MESSAGE_LENGTH 0x4 - -#define AMT_STATUS_HOST_IF_EMPTY_RESPONSE 0x4000 -#define AMT_STATUS_SDK_RESOURCES 0x1004 - - -#define AMT_BIOS_VERSION_LEN 65 -#define AMT_VERSIONS_NUMBER 50 -#define AMT_UNICODE_STRING_LEN 20 - -struct amt_unicode_string { - uint16_t length; - char string[AMT_UNICODE_STRING_LEN]; -} __attribute__((packed)); - -struct amt_version_type { - struct amt_unicode_string description; - struct amt_unicode_string version; -} __attribute__((packed)); - -struct amt_version { - uint8_t major; - uint8_t minor; -} __attribute__((packed)); - -struct amt_code_versions { - uint8_t bios[AMT_BIOS_VERSION_LEN]; - uint32_t count; - struct amt_version_type versions[AMT_VERSIONS_NUMBER]; -} __attribute__((packed)); - -/*************************************************************************** - * Intel Advanced Management Technolgy Host Interface - ***************************************************************************/ - -struct amt_host_if_msg_header { - struct amt_version version; - uint16_t _reserved; - uint32_t command; - uint32_t length; -} __attribute__((packed)); - -struct amt_host_if_resp_header { - struct amt_host_if_msg_header header; - uint32_t status; - unsigned char data[0]; -} __attribute__((packed)); - -const uuid_le MEI_IAMTHIF = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, \ - 0xac, 0xa8, 0x46, 0xe0, 0xff, 0x65, 0x81, 0x4c); - -#define AMT_HOST_IF_CODE_VERSIONS_REQUEST 0x0400001A -#define AMT_HOST_IF_CODE_VERSIONS_RESPONSE 0x0480001A - -const struct amt_host_if_msg_header CODE_VERSION_REQ = { - .version = {AMT_MAJOR_VERSION, AMT_MINOR_VERSION}, - ._reserved = 0, - .command = AMT_HOST_IF_CODE_VERSIONS_REQUEST, - .length = 0 -}; - - -struct amt_host_if { - struct mei mei_cl; - unsigned long send_timeout; - bool initialized; -}; - - -static bool amt_host_if_init(struct amt_host_if *acmd, - unsigned long send_timeout, bool verbose) -{ - acmd->send_timeout = (send_timeout) ? send_timeout : 20000; - acmd->initialized = mei_init(&acmd->mei_cl, &MEI_IAMTHIF, 0, verbose); - return acmd->initialized; -} - -static void amt_host_if_deinit(struct amt_host_if *acmd) -{ - mei_deinit(&acmd->mei_cl); - acmd->initialized = false; -} - -static uint32_t amt_verify_code_versions(const struct amt_host_if_resp_header *resp) -{ - uint32_t status = AMT_STATUS_SUCCESS; - struct amt_code_versions *code_ver; - size_t code_ver_len; - uint32_t ver_type_cnt; - uint32_t len; - uint32_t i; - - code_ver = (struct amt_code_versions *)resp->data; - /* length - sizeof(status) */ - code_ver_len = resp->header.length - sizeof(uint32_t); - ver_type_cnt = code_ver_len - - sizeof(code_ver->bios) - - sizeof(code_ver->count); - if (code_ver->count != ver_type_cnt / sizeof(struct amt_version_type)) { - status = AMT_STATUS_INTERNAL_ERROR; - goto out; - } - - for (i = 0; i < code_ver->count; i++) { - len = code_ver->versions[i].description.length; - - if (len > AMT_UNICODE_STRING_LEN) { - status = AMT_STATUS_INTERNAL_ERROR; - goto out; - } - - len = code_ver->versions[i].version.length; - if (code_ver->versions[i].version.string[len] != '\0' || - len != strlen(code_ver->versions[i].version.string)) { - status = AMT_STATUS_INTERNAL_ERROR; - goto out; - } - } -out: - return status; -} - -static uint32_t amt_verify_response_header(uint32_t command, - const struct amt_host_if_msg_header *resp_hdr, - uint32_t response_size) -{ - if (response_size < sizeof(struct amt_host_if_resp_header)) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (response_size != (resp_hdr->length + - sizeof(struct amt_host_if_msg_header))) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (resp_hdr->command != command) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (resp_hdr->_reserved != 0) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (resp_hdr->version.major != AMT_MAJOR_VERSION || - resp_hdr->version.minor < AMT_MINOR_VERSION) { - return AMT_STATUS_INTERNAL_ERROR; - } - return AMT_STATUS_SUCCESS; -} - -static uint32_t amt_host_if_call(struct amt_host_if *acmd, - const unsigned char *command, ssize_t command_sz, - uint8_t **read_buf, uint32_t rcmd, - unsigned int expected_sz) -{ - uint32_t in_buf_sz; - uint32_t out_buf_sz; - ssize_t written; - uint32_t status; - struct amt_host_if_resp_header *msg_hdr; - - in_buf_sz = acmd->mei_cl.buf_size; - *read_buf = (uint8_t *)malloc(sizeof(uint8_t) * in_buf_sz); - if (*read_buf == NULL) - return AMT_STATUS_SDK_RESOURCES; - memset(*read_buf, 0, in_buf_sz); - msg_hdr = (struct amt_host_if_resp_header *)*read_buf; - - written = mei_send_msg(&acmd->mei_cl, - command, command_sz, acmd->send_timeout); - if (written != command_sz) - return AMT_STATUS_INTERNAL_ERROR; - - out_buf_sz = mei_recv_msg(&acmd->mei_cl, *read_buf, in_buf_sz, 2000); - if (out_buf_sz <= 0) - return AMT_STATUS_HOST_IF_EMPTY_RESPONSE; - - status = msg_hdr->status; - if (status != AMT_STATUS_SUCCESS) - return status; - - status = amt_verify_response_header(rcmd, - &msg_hdr->header, out_buf_sz); - if (status != AMT_STATUS_SUCCESS) - return status; - - if (expected_sz && expected_sz != out_buf_sz) - return AMT_STATUS_INTERNAL_ERROR; - - return AMT_STATUS_SUCCESS; -} - - -static uint32_t amt_get_code_versions(struct amt_host_if *cmd, - struct amt_code_versions *versions) -{ - struct amt_host_if_resp_header *response = NULL; - uint32_t status; - - status = amt_host_if_call(cmd, - (const unsigned char *)&CODE_VERSION_REQ, - sizeof(CODE_VERSION_REQ), - (uint8_t **)&response, - AMT_HOST_IF_CODE_VERSIONS_RESPONSE, 0); - - if (status != AMT_STATUS_SUCCESS) - goto out; - - status = amt_verify_code_versions(response); - if (status != AMT_STATUS_SUCCESS) - goto out; - - memcpy(versions, response->data, sizeof(struct amt_code_versions)); -out: - if (response != NULL) - free(response); - - return status; -} - -/************************** end of amt_host_if_command ***********************/ -int main(int argc, char **argv) -{ - struct amt_code_versions ver; - struct amt_host_if acmd; - unsigned int i; - uint32_t status; - int ret; - bool verbose; - - verbose = (argc > 1 && strcmp(argv[1], "-v") == 0); - - if (!amt_host_if_init(&acmd, 5000, verbose)) { - ret = 1; - goto out; - } - - status = amt_get_code_versions(&acmd, &ver); - - amt_host_if_deinit(&acmd); - - switch (status) { - case AMT_STATUS_HOST_IF_EMPTY_RESPONSE: - printf("Intel AMT: DISABLED\n"); - ret = 0; - break; - case AMT_STATUS_SUCCESS: - printf("Intel AMT: ENABLED\n"); - for (i = 0; i < ver.count; i++) { - printf("%s:\t%s\n", ver.versions[i].description.string, - ver.versions[i].version.string); - } - ret = 0; - break; - default: - printf("An error has occurred\n"); - ret = 1; - break; - } - -out: - return ret; -} diff --git a/drivers/staging/mei/mei.h b/drivers/staging/mei/mei.h deleted file mode 100644 index bc0d8b6..0000000 --- a/drivers/staging/mei/mei.h +++ /dev/null @@ -1,110 +0,0 @@ -/****************************************************************************** - * Intel Management Engine Interface (Intel MEI) Linux driver - * Intel MEI Interface Header - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Corporation. - * linux-mei@linux.intel.com - * http://www.intel.com - * - * BSD LICENSE - * - * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ - -#ifndef _LINUX_MEI_H -#define _LINUX_MEI_H - -#include <linux/uuid.h> - -/* - * This IOCTL is used to associate the current file descriptor with a - * FW Client (given by UUID). This opens a communication channel - * between a host client and a FW client. From this point every read and write - * will communicate with the associated FW client. - * Only in close() (file_operation release()) the communication between - * the clients is disconnected - * - * The IOCTL argument is a struct with a union that contains - * the input parameter and the output parameter for this IOCTL. - * - * The input parameter is UUID of the FW Client. - * The output parameter is the properties of the FW client - * (FW protocol version and max message size). - * - */ -#define IOCTL_MEI_CONNECT_CLIENT \ - _IOWR('H' , 0x01, struct mei_connect_client_data) - -/* - * Intel MEI client information struct - */ -struct mei_client { - __u32 max_msg_length; - __u8 protocol_version; - __u8 reserved[3]; -}; - -/* - * IOCTL Connect Client Data structure - */ -struct mei_connect_client_data { - union { - uuid_le in_client_uuid; - struct mei_client out_client_properties; - }; -}; - -#endif /* _LINUX_MEI_H */ diff --git a/drivers/staging/mei/mei.txt b/drivers/staging/mei/mei.txt deleted file mode 100644 index 2785697..0000000 --- a/drivers/staging/mei/mei.txt +++ /dev/null @@ -1,215 +0,0 @@ -Intel(R) Management Engine Interface (Intel(R) MEI) -======================= - -Introduction -======================= - -The Intel Management Engine (Intel ME) is an isolated and protected computing -resource (Co-processor) residing inside certain Intel chipsets. The Intel ME -provides support for computer/IT management features. The feature set -depends on the Intel chipset SKU. - -The Intel Management Engine Interface (Intel MEI, previously known as HECI) -is the interface between the Host and Intel ME. This interface is exposed -to the host as a PCI device. The Intel MEI Driver is in charge of the -communication channel between a host application and the Intel ME feature. - -Each Intel ME feature (Intel ME Client) is addressed by a GUID/UUID and -each client has its own protocol. The protocol is message-based with a -header and payload up to 512 bytes. - -Prominent usage of the Intel ME Interface is to communicate with Intel(R) -Active Management Technology (Intel AMT)implemented in firmware running on -the Intel ME. - -Intel AMT provides the ability to manage a host remotely out-of-band (OOB) -even when the operating system running on the host processor has crashed or -is in a sleep state. - -Some examples of Intel AMT usage are: - - Monitoring hardware state and platform components - - Remote power off/on (useful for green computing or overnight IT - maintenance) - - OS updates - - Storage of useful platform information such as software assets - - Built-in hardware KVM - - Selective network isolation of Ethernet and IP protocol flows based - on policies set by a remote management console - - IDE device redirection from remote management console - -Intel AMT (OOB) communication is based on SOAP (deprecated -starting with Release 6.0) over HTTP/S or WS-Management protocol over -HTTP/S that are received from a remote management console application. - -For more information about Intel AMT: -http://software.intel.com/sites/manageability/AMT_Implementation_and_Reference_Guide - -Intel MEI Driver -======================= - -The driver exposes a misc device called /dev/mei. - -An application maintains communication with an Intel ME feature while -/dev/mei is open. The binding to a specific features is performed by calling -MEI_CONNECT_CLIENT_IOCTL, which passes the desired UUID. -The number of instances of an Intel ME feature that can be opened -at the same time depends on the Intel ME feature, but most of the -features allow only a single instance. - -The Intel AMT Host Interface (Intel AMTHI) feature supports multiple -simultaneous user applications. Therefore, the Intel MEI driver handles -this internally by maintaining request queues for the applications. - -The driver is oblivious to data that is passed between firmware feature -and host application. - -Because some of the Intel ME features can change the system -configuration, the driver by default allows only a privileged -user to access it. - -A code snippet for an application communicating with -Intel AMTHI client: - struct mei_connect_client_data data; - fd = open(MEI_DEVICE); - - data.d.in_client_uuid = AMTHI_UUID; - - ioctl(fd, IOCTL_MEI_CONNECT_CLIENT, &data); - - printf("Ver=%d, MaxLen=%ld\n", - data.d.in_client_uuid.protocol_version, - data.d.in_client_uuid.max_msg_length); - - [...] - - write(fd, amthi_req_data, amthi_req_data_len); - - [...] - - read(fd, &amthi_res_data, amthi_res_data_len); - - [...] - close(fd); - -IOCTL: -====== -The Intel MEI Driver supports the following IOCTL command: - IOCTL_MEI_CONNECT_CLIENT Connect to firmware Feature (client). - - usage: - struct mei_connect_client_data clientData; - ioctl(fd, IOCTL_MEI_CONNECT_CLIENT, &clientData); - - inputs: - mei_connect_client_data struct contain the following - input field: - - in_client_uuid - UUID of the FW Feature that needs - to connect to. - outputs: - out_client_properties - Client Properties: MTU and Protocol Version. - - error returns: - EINVAL Wrong IOCTL Number - ENODEV Device or Connection is not initialized or ready. - (e.g. Wrong UUID) - ENOMEM Unable to allocate memory to client internal data. - EFAULT Fatal Error (e.g. Unable to access user input data) - EBUSY Connection Already Open - - Notes: - max_msg_length (MTU) in client properties describes the maximum - data that can be sent or received. (e.g. if MTU=2K, can send - requests up to bytes 2k and received responses upto 2k bytes). - -Intel ME Applications: -============== - -1) Intel Local Management Service (Intel LMS) - - Applications running locally on the platform communicate with Intel AMT Release - 2.0 and later releases in the same way that network applications do via SOAP - over HTTP (deprecated starting with Release 6.0) or with WS-Management over - SOAP over HTTP. This means that some Intel AMT features can be accessed from a - local application using the same network interface as a remote application - communicating with Intel AMT over the network. - - When a local application sends a message addressed to the local Intel AMT host - name, the Intel LMS, which listens for traffic directed to the host name, - intercepts the message and routes it to the Intel MEI. - For more information: - http://software.intel.com/sites/manageability/AMT_Implementation_and_Reference_Guide - Under "About Intel AMT" => "Local Access" - - For downloading Intel LMS: - http://software.intel.com/en-us/articles/download-the-latest-intel-amt-open-source-drivers/ - - The Intel LMS opens a connection using the Intel MEI driver to the Intel LMS - firmware feature using a defined UUID and then communicates with the feature - using a protocol called Intel AMT Port Forwarding Protocol(Intel APF protocol). - The protocol is used to maintain multiple sessions with Intel AMT from a - single application. - - See the protocol specification in the Intel AMT Software Development Kit(SDK) - http://software.intel.com/sites/manageability/AMT_Implementation_and_Reference_Guide - Under "SDK Resources" => "Intel(R) vPro(TM) Gateway(MPS)" - => "Information for Intel(R) vPro(TM) Gateway Developers" - => "Description of the Intel AMT Port Forwarding (APF)Protocol" - - 2) Intel AMT Remote configuration using a Local Agent - A Local Agent enables IT personnel to configure Intel AMT out-of-the-box - without requiring installing additional data to enable setup. The remote - configuration process may involve an ISV-developed remote configuration - agent that runs on the host. - For more information: - http://software.intel.com/sites/manageability/AMT_Implementation_and_Reference_Guide - Under "Setup and Configuration of Intel AMT" => - "SDK Tools Supporting Setup and Configuration" => - "Using the Local Agent Sample" - - An open source Intel AMT configuration utility, implementing a local agent - that accesses the Intel MEI driver, can be found here: - http://software.intel.com/en-us/articles/download-the-latest-intel-amt-open-source-drivers/ - - -Intel AMT OS Health Watchdog: -============================= -The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog. -Whenever the OS hangs or crashes, Intel AMT will send an event -to any subscriber to this event. This mechanism means that -IT knows when a platform crashes even when there is a hard failure on the host. - -The Intel AMT Watchdog is composed of two parts: - 1) Firmware feature - receives the heartbeats - and sends an event when the heartbeats stop. - 2) Intel MEI driver - connects to the watchdog feature, configures the - watchdog and sends the heartbeats. - -The Intel MEI driver uses the kernel watchdog to configure the Intel AMT -Watchdog and to send heartbeats to it. The default timeout of the -watchdog is 120 seconds. - -If the Intel AMT Watchdog feature does not exist (i.e. the connection failed), -the Intel MEI driver will disable the sending of heartbeats. - -Supported Chipsets: -================== -7 Series Chipset Family -6 Series Chipset Family -5 Series Chipset Family -4 Series Chipset Family -Mobile 4 Series Chipset Family -ICH9 -82946GZ/GL -82G35 Express -82Q963/Q965 -82P965/G965 -Mobile PM965/GM965 -Mobile GME965/GLE960 -82Q35 Express -82G33/G31/P35/P31 Express -82Q33 Express -82X38/X48 Express - ---- -linux-mei@linux.intel.com diff --git a/drivers/staging/mei/mei_dev.h b/drivers/staging/mei/mei_dev.h deleted file mode 100644 index 10b1b4e..0000000 --- a/drivers/staging/mei/mei_dev.h +++ /dev/null @@ -1,428 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ - -#ifndef _MEI_DEV_H_ -#define _MEI_DEV_H_ - -#include <linux/types.h> -#include <linux/watchdog.h> -#include "mei.h" -#include "hw.h" - -/* - * watch dog definition - */ -#define MEI_WATCHDOG_DATA_SIZE 16 -#define MEI_START_WD_DATA_SIZE 20 -#define MEI_WD_PARAMS_SIZE 4 -#define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0) - -#define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32)) - -/* - * MEI PCI Device object - */ -extern struct pci_dev *mei_device; - - -/* - * AMTHI Client UUID - */ -extern const uuid_le mei_amthi_guid; - -/* - * Watchdog Client UUID - */ -extern const uuid_le mei_wd_guid; - -/* - * Watchdog independence state message - */ -extern const u8 mei_wd_state_independence_msg[3][4]; - -/* - * Number of File descriptors/handles - * that can be opened to the driver. - * - * Limit to 253: 255 Total Clients - * minus internal client for AMTHI - * minus internal client for Watchdog - */ -#define MEI_MAX_OPEN_HANDLE_COUNT 253 - -/* - * Number of Maximum MEI Clients - */ -#define MEI_CLIENTS_MAX 255 - -/* File state */ -enum file_state { - MEI_FILE_INITIALIZING = 0, - MEI_FILE_CONNECTING, - MEI_FILE_CONNECTED, - MEI_FILE_DISCONNECTING, - MEI_FILE_DISCONNECTED -}; - -/* MEI device states */ -enum mei_states { - MEI_INITIALIZING = 0, - MEI_INIT_CLIENTS, - MEI_ENABLED, - MEI_RESETING, - MEI_DISABLED, - MEI_RECOVERING_FROM_RESET, - MEI_POWER_DOWN, - MEI_POWER_UP -}; - -/* init clients states*/ -enum mei_init_clients_states { - MEI_START_MESSAGE = 0, - MEI_ENUM_CLIENTS_MESSAGE, - MEI_CLIENT_PROPERTIES_MESSAGE -}; - -enum iamthif_states { - MEI_IAMTHIF_IDLE, - MEI_IAMTHIF_WRITING, - MEI_IAMTHIF_FLOW_CONTROL, - MEI_IAMTHIF_READING, - MEI_IAMTHIF_READ_COMPLETE -}; - -enum mei_file_transaction_states { - MEI_IDLE, - MEI_WRITING, - MEI_WRITE_COMPLETE, - MEI_FLOW_CONTROL, - MEI_READING, - MEI_READ_COMPLETE -}; - -/* MEI CB */ -enum mei_cb_major_types { - MEI_READ = 0, - MEI_WRITE, - MEI_IOCTL, - MEI_OPEN, - MEI_CLOSE -}; - -/* - * Intel MEI message data struct - */ -struct mei_message_data { - u32 size; - unsigned char *data; -} __packed; - - -struct mei_cl_cb { - struct list_head cb_list; - enum mei_cb_major_types major_file_operations; - void *file_private; - struct mei_message_data request_buffer; - struct mei_message_data response_buffer; - unsigned long information; - unsigned long read_time; - struct file *file_object; -}; - -/* MEI client instance carried as file->pirvate_data*/ -struct mei_cl { - struct list_head link; - struct mei_device *dev; - enum file_state state; - wait_queue_head_t tx_wait; - wait_queue_head_t rx_wait; - wait_queue_head_t wait; - int read_pending; - int status; - /* ID of client connected */ - u8 host_client_id; - u8 me_client_id; - u8 mei_flow_ctrl_creds; - u8 timer_count; - enum mei_file_transaction_states reading_state; - enum mei_file_transaction_states writing_state; - int sm_state; - struct mei_cl_cb *read_cb; -}; - -struct mei_io_list { - struct mei_cl_cb mei_cb; -}; - -/* MEI private device struct */ -struct mei_device { - struct pci_dev *pdev; /* pointer to pci device struct */ - /* - * lists of queues - */ - /* array of pointers to aio lists */ - struct mei_io_list read_list; /* driver read queue */ - struct mei_io_list write_list; /* driver write queue */ - struct mei_io_list write_waiting_list; /* write waiting queue */ - struct mei_io_list ctrl_wr_list; /* managed write IOCTL list */ - struct mei_io_list ctrl_rd_list; /* managed read IOCTL list */ - struct mei_io_list amthi_cmd_list; /* amthi list for cmd waiting */ - - /* driver managed amthi list for reading completed amthi cmd data */ - struct mei_io_list amthi_read_complete_list; - /* - * list of files - */ - struct list_head file_list; - long open_handle_count; - /* - * memory of device - */ - unsigned int mem_base; - unsigned int mem_length; - void __iomem *mem_addr; - /* - * lock for the device - */ - struct mutex device_lock; /* device lock */ - struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */ - bool recvd_msg; - /* - * hw states of host and fw(ME) - */ - u32 host_hw_state; - u32 me_hw_state; - /* - * waiting queue for receive message from FW - */ - wait_queue_head_t wait_recvd_msg; - wait_queue_head_t wait_stop_wd; - - /* - * mei device states - */ - enum mei_states mei_state; - enum mei_init_clients_states init_clients_state; - u16 init_clients_timer; - bool stop; - bool need_reset; - - u32 extra_write_index; - unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ - u32 wr_msg_buf[128]; /* used for control messages */ - u32 ext_msg_buf[8]; /* for control responses */ - u32 rd_msg_hdr; - - struct hbm_version version; - - struct mei_me_client *me_clients; /* Note: memory has to be allocated */ - DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX); - DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); - u8 me_clients_num; - u8 me_client_presentation_num; - u8 me_client_index; - bool mei_host_buffer_is_empty; - - struct mei_cl wd_cl; - bool wd_pending; - bool wd_stopped; - bool wd_bypass; /* if false, don't refresh watchdog ME client */ - u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */ - u16 wd_due_counter; - unsigned char wd_data[MEI_START_WD_DATA_SIZE]; - - - - struct file *iamthif_file_object; - struct mei_cl iamthif_cl; - struct mei_cl_cb *iamthif_current_cb; - int iamthif_mtu; - unsigned long iamthif_timer; - u32 iamthif_stall_timer; - unsigned char *iamthif_msg_buf; /* Note: memory has to be allocated */ - u32 iamthif_msg_buf_size; - u32 iamthif_msg_buf_index; - enum iamthif_states iamthif_state; - bool iamthif_flow_control_pending; - bool iamthif_ioctl; - bool iamthif_canceled; - - bool wd_interface_reg; -}; - - -/* - * mei init function prototypes - */ -struct mei_device *mei_device_init(struct pci_dev *pdev); -void mei_reset(struct mei_device *dev, int interrupts); -int mei_hw_init(struct mei_device *dev); -int mei_task_initialize_clients(void *data); -int mei_initialize_clients(struct mei_device *dev); -int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl); -void mei_remove_client_from_file_list(struct mei_device *dev, u8 host_client_id); -void mei_host_init_iamthif(struct mei_device *dev); -void mei_allocate_me_clients_storage(struct mei_device *dev); - - -u8 mei_find_me_client_update_filext(struct mei_device *dev, - struct mei_cl *priv, - const uuid_le *cguid, u8 client_id); - -/* - * MEI IO List Functions - */ -void mei_io_list_init(struct mei_io_list *list); -void mei_io_list_flush(struct mei_io_list *list, struct mei_cl *cl); - -/* - * MEI ME Client Functions - */ - -struct mei_cl *mei_cl_allocate(struct mei_device *dev); -void mei_cl_init(struct mei_cl *cl, struct mei_device *dev); -int mei_cl_flush_queues(struct mei_cl *cl); -/** - * mei_cl_cmp_id - tells if file private data have same id - * - * @fe1: private data of 1. file object - * @fe2: private data of 2. file object - * - * returns true - if ids are the same and not NULL - */ -static inline bool mei_cl_cmp_id(const struct mei_cl *cl1, - const struct mei_cl *cl2) -{ - return cl1 && cl2 && - (cl1->host_client_id == cl2->host_client_id) && - (cl1->me_client_id == cl2->me_client_id); -} - - - -/* - * MEI Host Client Functions - */ -void mei_host_start_message(struct mei_device *dev); -void mei_host_enum_clients_message(struct mei_device *dev); -int mei_host_client_properties(struct mei_device *dev); - -/* - * MEI interrupt functions prototype - */ -irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id); -irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id); -void mei_timer(struct work_struct *work); - -/* - * MEI input output function prototype - */ -int mei_ioctl_connect_client(struct file *file, - struct mei_connect_client_data *data); - -int mei_start_read(struct mei_device *dev, struct mei_cl *cl); - -int amthi_write(struct mei_device *dev, struct mei_cl_cb *priv_cb); - -int amthi_read(struct mei_device *dev, struct file *file, - char __user *ubuf, size_t length, loff_t *offset); - -struct mei_cl_cb *find_amthi_read_list_entry(struct mei_device *dev, - struct file *file); - -void mei_run_next_iamthif_cmd(struct mei_device *dev); - -void mei_free_cb_private(struct mei_cl_cb *priv_cb); - -int mei_find_me_client_index(const struct mei_device *dev, uuid_le cuuid); - -/* - * Register Access Function - */ - -/** - * mei_reg_read - Reads 32bit data from the mei device - * - * @dev: the device structure - * @offset: offset from which to read the data - * - * returns register value (u32) - */ -static inline u32 mei_reg_read(struct mei_device *dev, unsigned long offset) -{ - return ioread32(dev->mem_addr + offset); -} - -/** - * mei_reg_write - Writes 32bit data to the mei device - * - * @dev: the device structure - * @offset: offset from which to write the data - * @value: register value to write (u32) - */ -static inline void mei_reg_write(struct mei_device *dev, - unsigned long offset, u32 value) -{ - iowrite32(value, dev->mem_addr + offset); -} - -/** - * mei_hcsr_read - Reads 32bit data from the host CSR - * - * @dev: the device structure - * - * returns the byte read. - */ -static inline u32 mei_hcsr_read(struct mei_device *dev) -{ - return mei_reg_read(dev, H_CSR); -} - -/** - * mei_mecsr_read - Reads 32bit data from the ME CSR - * - * @dev: the device structure - * - * returns ME_CSR_HA register value (u32) - */ -static inline u32 mei_mecsr_read(struct mei_device *dev) -{ - return mei_reg_read(dev, ME_CSR_HA); -} - -/** - * get_me_cb_rw - Reads 32bit data from the mei ME_CB_RW register - * - * @dev: the device structure - * - * returns ME_CB_RW register value (u32) - */ -static inline u32 mei_mecbrw_read(struct mei_device *dev) -{ - return mei_reg_read(dev, ME_CB_RW); -} - - -/* - * mei interface function prototypes - */ -void mei_hcsr_set(struct mei_device *dev); -void mei_csr_clear_his(struct mei_device *dev); - -void mei_enable_interrupts(struct mei_device *dev); -void mei_disable_interrupts(struct mei_device *dev); - -#endif diff --git a/drivers/staging/mei/wd.c b/drivers/staging/mei/wd.c deleted file mode 100644 index cf4c29d..0000000 --- a/drivers/staging/mei/wd.c +++ /dev/null @@ -1,379 +0,0 @@ -/* - * - * Intel Management Engine Interface (Intel MEI) Linux driver - * Copyright (c) 2003-2012, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/device.h> -#include <linux/pci.h> -#include <linux/sched.h> -#include <linux/watchdog.h> - -#include "mei_dev.h" -#include "hw.h" -#include "interface.h" -#include "mei.h" - -static const u8 mei_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 }; -static const u8 mei_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 }; - -const u8 mei_wd_state_independence_msg[3][4] = { - {0x05, 0x02, 0x51, 0x10}, - {0x05, 0x02, 0x52, 0x10}, - {0x07, 0x02, 0x01, 0x10} -}; - -/* - * AMT Watchdog Device - */ -#define INTEL_AMT_WATCHDOG_ID "INTCAMT" - -/* UUIDs for AMT F/W clients */ -const uuid_le mei_wd_guid = UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, 0x89, - 0x9D, 0xA9, 0x15, 0x14, 0xCB, - 0x32, 0xAB); - -void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout) -{ - dev_dbg(&dev->pdev->dev, "timeout=%d.\n", timeout); - memcpy(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE); - memcpy(dev->wd_data + MEI_WD_PARAMS_SIZE, - &timeout, sizeof(u16)); -} - -/** - * host_init_wd - mei initialization wd. - * - * @dev: the device structure - */ -bool mei_wd_host_init(struct mei_device *dev) -{ - bool ret = false; - - mei_cl_init(&dev->wd_cl, dev); - - /* look for WD client and connect to it */ - dev->wd_cl.state = MEI_FILE_DISCONNECTED; - dev->wd_timeout = AMT_WD_DEFAULT_TIMEOUT; - - /* find ME WD client */ - mei_find_me_client_update_filext(dev, &dev->wd_cl, - &mei_wd_guid, MEI_WD_HOST_CLIENT_ID); - - dev_dbg(&dev->pdev->dev, "check wd_cl\n"); - if (MEI_FILE_CONNECTING == dev->wd_cl.state) { - if (mei_connect(dev, &dev->wd_cl)) { - dev_dbg(&dev->pdev->dev, "Failed to connect to WD client\n"); - dev->wd_cl.state = MEI_FILE_DISCONNECTED; - dev->wd_cl.host_client_id = 0; - ret = false; - goto end; - } else { - dev->wd_cl.timer_count = CONNECT_TIMEOUT; - } - } else { - dev_dbg(&dev->pdev->dev, "Failed to find WD client\n"); - ret = false; - goto end; - } - -end: - return ret; -} - -/** - * mei_wd_send - sends watch dog message to fw. - * - * @dev: the device structure - * - * returns 0 if success, - * -EIO when message send fails - * -EINVAL when invalid message is to be sent - */ -int mei_wd_send(struct mei_device *dev) -{ - struct mei_msg_hdr *mei_hdr; - - mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0]; - mei_hdr->host_addr = dev->wd_cl.host_client_id; - mei_hdr->me_addr = dev->wd_cl.me_client_id; - mei_hdr->msg_complete = 1; - mei_hdr->reserved = 0; - - if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_PARAMS_SIZE)) - mei_hdr->length = MEI_START_WD_DATA_SIZE; - else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE)) - mei_hdr->length = MEI_WD_PARAMS_SIZE; - else - return -EINVAL; - - return mei_write_message(dev, mei_hdr, dev->wd_data, mei_hdr->length); -} - -/** - * mei_wd_stop - sends watchdog stop message to fw. - * - * @dev: the device structure - * @preserve: indicate if to keep the timeout value - * - * returns 0 if success, - * -EIO when message send fails - * -EINVAL when invalid message is to be sent - */ -int mei_wd_stop(struct mei_device *dev, bool preserve) -{ - int ret; - u16 wd_timeout = dev->wd_timeout; - - cancel_delayed_work(&dev->timer_work); - if (dev->wd_cl.state != MEI_FILE_CONNECTED || !dev->wd_timeout) - return 0; - - dev->wd_timeout = 0; - dev->wd_due_counter = 0; - memcpy(dev->wd_data, mei_stop_wd_params, MEI_WD_PARAMS_SIZE); - dev->stop = true; - - ret = mei_flow_ctrl_creds(dev, &dev->wd_cl); - if (ret < 0) - goto out; - - if (ret && dev->mei_host_buffer_is_empty) { - ret = 0; - dev->mei_host_buffer_is_empty = false; - - if (!mei_wd_send(dev)) { - ret = mei_flow_ctrl_reduce(dev, &dev->wd_cl); - if (ret) - goto out; - } else { - dev_dbg(&dev->pdev->dev, "send stop WD failed\n"); - } - - dev->wd_pending = false; - } else { - dev->wd_pending = true; - } - dev->wd_stopped = false; - mutex_unlock(&dev->device_lock); - - ret = wait_event_interruptible_timeout(dev->wait_stop_wd, - dev->wd_stopped, 10 * HZ); - mutex_lock(&dev->device_lock); - if (dev->wd_stopped) { - dev_dbg(&dev->pdev->dev, "stop wd complete ret=%d.\n", ret); - ret = 0; - } else { - if (!ret) - ret = -ETIMEDOUT; - dev_warn(&dev->pdev->dev, - "stop wd failed to complete ret=%d.\n", ret); - } - - if (preserve) - dev->wd_timeout = wd_timeout; - -out: - return ret; -} - -/* - * mei_wd_ops_start - wd start command from the watchdog core. - * - * @wd_dev - watchdog device struct - * - * returns 0 if success, negative errno code for failure - */ -static int mei_wd_ops_start(struct watchdog_device *wd_dev) -{ - int err = -ENODEV; - struct mei_device *dev; - - dev = pci_get_drvdata(mei_device); - if (!dev) - return -ENODEV; - - mutex_lock(&dev->device_lock); - - if (dev->mei_state != MEI_ENABLED) { - dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED mei_state= %d\n", - dev->mei_state); - goto end_unlock; - } - - if (dev->wd_cl.state != MEI_FILE_CONNECTED) { - dev_dbg(&dev->pdev->dev, "MEI Driver is not connected to Watchdog Client\n"); - goto end_unlock; - } - - mei_wd_set_start_timeout(dev, dev->wd_timeout); - - err = 0; -end_unlock: - mutex_unlock(&dev->device_lock); - return err; -} - -/* - * mei_wd_ops_stop - wd stop command from the watchdog core. - * - * @wd_dev - watchdog device struct - * - * returns 0 if success, negative errno code for failure - */ -static int mei_wd_ops_stop(struct watchdog_device *wd_dev) -{ - struct mei_device *dev; - dev = pci_get_drvdata(mei_device); - - if (!dev) - return -ENODEV; - - mutex_lock(&dev->device_lock); - mei_wd_stop(dev, false); - mutex_unlock(&dev->device_lock); - - return 0; -} - -/* - * mei_wd_ops_ping - wd ping command from the watchdog core. - * - * @wd_dev - watchdog device struct - * - * returns 0 if success, negative errno code for failure - */ -static int mei_wd_ops_ping(struct watchdog_device *wd_dev) -{ - int ret = 0; - struct mei_device *dev; - dev = pci_get_drvdata(mei_device); - - if (!dev) - return -ENODEV; - - mutex_lock(&dev->device_lock); - - if (dev->wd_cl.state != MEI_FILE_CONNECTED) { - dev_dbg(&dev->pdev->dev, "wd is not connected.\n"); - ret = -ENODEV; - goto end; - } - - /* Check if we can send the ping to HW*/ - if (dev->mei_host_buffer_is_empty && - mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) { - - dev->mei_host_buffer_is_empty = false; - dev_dbg(&dev->pdev->dev, "sending watchdog ping\n"); - - if (mei_wd_send(dev)) { - dev_dbg(&dev->pdev->dev, "wd send failed.\n"); - ret = -EIO; - goto end; - } - - if (mei_flow_ctrl_reduce(dev, &dev->wd_cl)) { - dev_dbg(&dev->pdev->dev, "mei_flow_ctrl_reduce() failed.\n"); - ret = -EIO; - goto end; - } - - } else { - dev->wd_pending = true; - } - -end: - mutex_unlock(&dev->device_lock); - return ret; -} - -/* - * mei_wd_ops_set_timeout - wd set timeout command from the watchdog core. - * - * @wd_dev - watchdog device struct - * @timeout - timeout value to set - * - * returns 0 if success, negative errno code for failure - */ -static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int timeout) -{ - struct mei_device *dev; - dev = pci_get_drvdata(mei_device); - - if (!dev) - return -ENODEV; - - /* Check Timeout value */ - if (timeout < AMT_WD_MIN_TIMEOUT || timeout > AMT_WD_MAX_TIMEOUT) - return -EINVAL; - - mutex_lock(&dev->device_lock); - - dev->wd_timeout = timeout; - wd_dev->timeout = timeout; - mei_wd_set_start_timeout(dev, dev->wd_timeout); - - mutex_unlock(&dev->device_lock); - - return 0; -} - -/* - * Watchdog Device structs - */ -static const struct watchdog_ops wd_ops = { - .owner = THIS_MODULE, - .start = mei_wd_ops_start, - .stop = mei_wd_ops_stop, - .ping = mei_wd_ops_ping, - .set_timeout = mei_wd_ops_set_timeout, -}; -static const struct watchdog_info wd_info = { - .identity = INTEL_AMT_WATCHDOG_ID, - .options = WDIOF_KEEPALIVEPING, -}; - -struct watchdog_device amt_wd_dev = { - .info = &wd_info, - .ops = &wd_ops, - .timeout = AMT_WD_DEFAULT_TIMEOUT, - .min_timeout = AMT_WD_MIN_TIMEOUT, - .max_timeout = AMT_WD_MAX_TIMEOUT, -}; - - -void mei_watchdog_register(struct mei_device *dev) -{ - dev_dbg(&dev->pdev->dev, "dev->wd_timeout =%d.\n", dev->wd_timeout); - - dev->wd_due_counter = !!dev->wd_timeout; - - if (watchdog_register_device(&amt_wd_dev)) { - dev_err(&dev->pdev->dev, "unable to register watchdog device.\n"); - dev->wd_interface_reg = false; - } else { - dev_dbg(&dev->pdev->dev, "successfully register watchdog interface.\n"); - dev->wd_interface_reg = true; - } -} - -void mei_watchdog_unregister(struct mei_device *dev) -{ - if (dev->wd_interface_reg) - watchdog_unregister_device(&amt_wd_dev); - dev->wd_interface_reg = false; -} - |