diff options
author | Daniel Walker <dwalker@codeaurora.org> | 2010-05-11 22:56:44 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-14 20:21:30 (GMT) |
commit | bf597e99d2fd4c5d25485fd4e4877bbae2be816c (patch) | |
tree | da7ae43a21dd8f0dc1d2904ccfc7e8370d148201 | |
parent | e64354c0be3b7134c85571a525b2e37fc4a95eef (diff) | |
download | linux-bf597e99d2fd4c5d25485fd4e4877bbae2be816c.tar.xz |
staging: dream: smd: remove all smd related code
Part of this code is already in my MSM tree. I'll move the rest
forward through my tree also.
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
CC: Pavel Machek <pavel@ucw.cz>
CC: linux-arm-msm@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r-- | drivers/staging/dream/Kconfig | 1 | ||||
-rw-r--r-- | drivers/staging/dream/Makefile | 2 | ||||
-rw-r--r-- | drivers/staging/dream/smd/Kconfig | 26 | ||||
-rw-r--r-- | drivers/staging/dream/smd/Makefile | 7 | ||||
-rw-r--r-- | drivers/staging/dream/smd/rpc_server_dog_keepalive.c | 68 | ||||
-rw-r--r-- | drivers/staging/dream/smd/rpc_server_time_remote.c | 77 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd.c | 1330 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_private.h | 164 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_qmi.c | 851 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_rpcrouter.c | 1261 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_rpcrouter.h | 193 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_rpcrouter_device.c | 377 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_rpcrouter_servers.c | 226 | ||||
-rw-r--r-- | drivers/staging/dream/smd/smd_tty.c | 208 |
14 files changed, 1 insertions, 4790 deletions
diff --git a/drivers/staging/dream/Kconfig b/drivers/staging/dream/Kconfig index 707cc71..0c30b19 100644 --- a/drivers/staging/dream/Kconfig +++ b/drivers/staging/dream/Kconfig @@ -3,7 +3,6 @@ config DREAM depends on MACH_TROUT if DREAM -source "drivers/staging/dream/smd/Kconfig" source "drivers/staging/dream/camera/Kconfig" diff --git a/drivers/staging/dream/Makefile b/drivers/staging/dream/Makefile index 43d1eec..fbea0ab 100644 --- a/drivers/staging/dream/Makefile +++ b/drivers/staging/dream/Makefile @@ -1,5 +1,5 @@ EXTRA_CFLAGS=-Idrivers/staging/dream/include -obj-$(CONFIG_MSM_ADSP) += qdsp5/ smd/ +obj-$(CONFIG_MSM_ADSP) += qdsp5/ obj-$(CONFIG_MSM_CAMERA) += camera/ obj-$(CONFIG_INPUT_GPIO) += gpio_axis.o gpio_event.o gpio_input.o gpio_matrix.o gpio_output.o diff --git a/drivers/staging/dream/smd/Kconfig b/drivers/staging/dream/smd/Kconfig deleted file mode 100644 index 17b8bdc..0000000 --- a/drivers/staging/dream/smd/Kconfig +++ /dev/null @@ -1,26 +0,0 @@ -config MSM_SMD - depends on ARCH_MSM - default y - bool "MSM Shared Memory Driver (SMD)" - help - Support for the shared memory interface between the apps - processor and the baseband processor. Provides access to - the "shared heap", as well as virtual serial channels - used to communicate with various services on the baseband - processor. - -config MSM_ONCRPCROUTER - depends on MSM_SMD - default y - bool "MSM ONCRPC router support" - help - Support for the MSM ONCRPC router for communication between - the ARM9 and ARM11 - -config MSM_RPCSERVERS - depends on MSM_ONCRPCROUTER - default y - bool "Kernel side RPC server bundle" - help - none - diff --git a/drivers/staging/dream/smd/Makefile b/drivers/staging/dream/smd/Makefile deleted file mode 100644 index 1c87618..0000000 --- a/drivers/staging/dream/smd/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -EXTRA_CFLAGS=-Idrivers/staging/dream/include -obj-$(CONFIG_MSM_SMD) += smd.o smd_tty.o smd_qmi.o -obj-$(CONFIG_MSM_ONCRPCROUTER) += smd_rpcrouter.o -obj-$(CONFIG_MSM_ONCRPCROUTER) += smd_rpcrouter_device.o -obj-$(CONFIG_MSM_ONCRPCROUTER) += smd_rpcrouter_servers.o -obj-$(CONFIG_MSM_RPCSERVERS) += rpc_server_dog_keepalive.o -obj-$(CONFIG_MSM_RPCSERVERS) += rpc_server_time_remote.o diff --git a/drivers/staging/dream/smd/rpc_server_dog_keepalive.c b/drivers/staging/dream/smd/rpc_server_dog_keepalive.c deleted file mode 100644 index b23fccf..0000000 --- a/drivers/staging/dream/smd/rpc_server_dog_keepalive.c +++ /dev/null @@ -1,68 +0,0 @@ -/* arch/arm/mach-msm/rpc_server_dog_keepalive.c - * - * Copyright (C) 2007 Google, Inc. - * Author: Iliyan Malchev <ibm@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <mach/msm_rpcrouter.h> - -/* dog_keepalive server definitions */ - -#define DOG_KEEPALIVE_PROG 0x30000015 -#if CONFIG_MSM_AMSS_VERSION==6210 -#define DOG_KEEPALIVE_VERS 0 -#define RPC_DOG_KEEPALIVE_BEACON 1 -#elif (CONFIG_MSM_AMSS_VERSION==6220) || (CONFIG_MSM_AMSS_VERSION==6225) -#define DOG_KEEPALIVE_VERS 0x731fa727 -#define RPC_DOG_KEEPALIVE_BEACON 2 -#elif CONFIG_MSM_AMSS_VERSION==6350 -#define DOG_KEEPALIVE_VERS 0x00010000 -#define RPC_DOG_KEEPALIVE_BEACON 2 -#else -#error "Unsupported AMSS version" -#endif -#define RPC_DOG_KEEPALIVE_NULL 0 - - -/* TODO: Remove server registration with _VERS when modem is upated with _COMP*/ - -static int handle_rpc_call(struct msm_rpc_server *server, - struct rpc_request_hdr *req, unsigned len) -{ - switch (req->procedure) { - case RPC_DOG_KEEPALIVE_NULL: - return 0; - case RPC_DOG_KEEPALIVE_BEACON: - printk(KERN_INFO "DOG KEEPALIVE PING\n"); - return 0; - default: - return -ENODEV; - } -} - -static struct msm_rpc_server rpc_server = { - .prog = DOG_KEEPALIVE_PROG, - .vers = DOG_KEEPALIVE_VERS, - .rpc_call = handle_rpc_call, -}; - -static int __init rpc_server_init(void) -{ - /* Dual server registration to support backwards compatibility vers */ - return msm_rpc_create_server(&rpc_server); -} - - -module_init(rpc_server_init); diff --git a/drivers/staging/dream/smd/rpc_server_time_remote.c b/drivers/staging/dream/smd/rpc_server_time_remote.c deleted file mode 100644 index 2f90fc8..0000000 --- a/drivers/staging/dream/smd/rpc_server_time_remote.c +++ /dev/null @@ -1,77 +0,0 @@ -/* arch/arm/mach-msm/rpc_server_time_remote.c - * - * Copyright (C) 2007 Google, Inc. - * Author: Iliyan Malchev <ibm@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <mach/msm_rpcrouter.h> - -/* time_remote_mtoa server definitions. */ - -#define TIME_REMOTE_MTOA_PROG 0x3000005d -#if CONFIG_MSM_AMSS_VERSION==6210 -#define TIME_REMOTE_MTOA_VERS 0 -#elif (CONFIG_MSM_AMSS_VERSION==6220) || (CONFIG_MSM_AMSS_VERSION==6225) -#define TIME_REMOTE_MTOA_VERS 0x9202a8e4 -#elif CONFIG_MSM_AMSS_VERSION==6350 -#define TIME_REMOTE_MTOA_VERS 0x00010000 -#else -#error "Unknown AMSS version" -#endif -#define RPC_TIME_REMOTE_MTOA_NULL 0 -#define RPC_TIME_TOD_SET_APPS_BASES 2 - -struct rpc_time_tod_set_apps_bases_args { - uint32_t tick; - uint64_t stamp; -}; - -static int handle_rpc_call(struct msm_rpc_server *server, - struct rpc_request_hdr *req, unsigned len) -{ - switch (req->procedure) { - case RPC_TIME_REMOTE_MTOA_NULL: - return 0; - - case RPC_TIME_TOD_SET_APPS_BASES: { - struct rpc_time_tod_set_apps_bases_args *args; - args = (struct rpc_time_tod_set_apps_bases_args *)(req + 1); - args->tick = be32_to_cpu(args->tick); - args->stamp = be64_to_cpu(args->stamp); - printk(KERN_INFO "RPC_TIME_TOD_SET_APPS_BASES:\n" - "\ttick = %d\n" - "\tstamp = %lld\n", - args->tick, args->stamp); - return 0; - } - default: - return -ENODEV; - } -} - -static struct msm_rpc_server rpc_server = { - .prog = TIME_REMOTE_MTOA_PROG, - .vers = TIME_REMOTE_MTOA_VERS, - .rpc_call = handle_rpc_call, -}; - -static int __init rpc_server_init(void) -{ - /* Dual server registration to support backwards compatibility vers */ - return msm_rpc_create_server(&rpc_server); -} - - -module_init(rpc_server_init); diff --git a/drivers/staging/dream/smd/smd.c b/drivers/staging/dream/smd/smd.c deleted file mode 100644 index 8f35be7..0000000 --- a/drivers/staging/dream/smd/smd.c +++ /dev/null @@ -1,1330 +0,0 @@ -/* arch/arm/mach-msm/smd.c - * - * Copyright (C) 2007 Google, Inc. - * Author: Brian Swetland <swetland@google.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/platform_device.h> -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/cdev.h> -#include <linux/device.h> -#include <linux/wait.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/debugfs.h> -#include <linux/delay.h> -#include <linux/io.h> - -#include <mach/msm_smd.h> -#include <mach/msm_iomap.h> -#include <mach/system.h> - -#include "smd_private.h" -#include "../../../../arch/arm/mach-msm/proc_comm.h" - -void (*msm_hw_reset_hook)(void); - -#define MODULE_NAME "msm_smd" - -enum { - MSM_SMD_DEBUG = 1U << 0, - MSM_SMSM_DEBUG = 1U << 0, -}; - -static int msm_smd_debug_mask; - -module_param_named(debug_mask, msm_smd_debug_mask, - int, S_IRUGO | S_IWUSR | S_IWGRP); - -void *smem_find(unsigned id, unsigned size); -static void smd_diag(void); - -static unsigned last_heap_free = 0xffffffff; - -#define MSM_A2M_INT(n) (MSM_CSR_BASE + 0x400 + (n) * 4) - -static inline void notify_other_smsm(void) -{ - writel(1, MSM_A2M_INT(5)); -} - -static inline void notify_other_smd(void) -{ - writel(1, MSM_A2M_INT(0)); -} - -static void smd_diag(void) -{ - char *x; - - x = smem_find(ID_DIAG_ERR_MSG, SZ_DIAG_ERR_MSG); - if (x != 0) { - x[SZ_DIAG_ERR_MSG - 1] = 0; - pr_info("smem: DIAG '%s'\n", x); - } -} - -/* call when SMSM_RESET flag is set in the A9's smsm_state */ -static void handle_modem_crash(void) -{ - pr_err("ARM9 has CRASHED\n"); - smd_diag(); - - /* hard reboot if possible */ - if (msm_hw_reset_hook) - msm_hw_reset_hook(); - - /* in this case the modem or watchdog should reboot us */ - for (;;) - ; -} - -extern int (*msm_check_for_modem_crash)(void); - -static int check_for_modem_crash(void) -{ - struct smsm_shared *smsm; - - smsm = smem_find(ID_SHARED_STATE, 2 * sizeof(struct smsm_shared)); - - /* if the modem's not ready yet, we have to hope for the best */ - if (!smsm) - return 0; - - if (smsm[1].state & SMSM_RESET) { - handle_modem_crash(); - return -1; - } else { - return 0; - } -} - -#define SMD_SS_CLOSED 0x00000000 -#define SMD_SS_OPENING 0x00000001 -#define SMD_SS_OPENED 0x00000002 -#define SMD_SS_FLUSHING 0x00000003 -#define SMD_SS_CLOSING 0x00000004 -#define SMD_SS_RESET 0x00000005 -#define SMD_SS_RESET_OPENING 0x00000006 - -#define SMD_BUF_SIZE 8192 -#define SMD_CHANNELS 64 - -#define SMD_HEADER_SIZE 20 - - -/* the spinlock is used to synchronize between the -** irq handler and code that mutates the channel -** list or fiddles with channel state -*/ -static DEFINE_SPINLOCK(smd_lock); -static DEFINE_SPINLOCK(smem_lock); - -/* the mutex is used during open() and close() -** operations to avoid races while creating or -** destroying smd_channel structures -*/ -static DEFINE_MUTEX(smd_creation_mutex); - -static int smd_initialized; - -struct smd_alloc_elm { - char name[20]; - uint32_t cid; - uint32_t ctype; - uint32_t ref_count; -}; - -struct smd_half_channel { - unsigned state; - unsigned char fDSR; - unsigned char fCTS; - unsigned char fCD; - unsigned char fRI; - unsigned char fHEAD; - unsigned char fTAIL; - unsigned char fSTATE; - unsigned char fUNUSED; - unsigned tail; - unsigned head; - unsigned char data[SMD_BUF_SIZE]; -}; - -struct smd_shared { - struct smd_half_channel ch0; - struct smd_half_channel ch1; -}; - -struct smd_channel { - volatile struct smd_half_channel *send; - volatile struct smd_half_channel *recv; - struct list_head ch_list; - - unsigned current_packet; - unsigned n; - void *priv; - void (*notify)(void *priv, unsigned flags); - - int (*read)(smd_channel_t *ch, void *data, int len); - int (*write)(smd_channel_t *ch, const void *data, int len); - int (*read_avail)(smd_channel_t *ch); - int (*write_avail)(smd_channel_t *ch); - - void (*update_state)(smd_channel_t *ch); - unsigned last_state; - - char name[32]; - struct platform_device pdev; -}; - -static LIST_HEAD(smd_ch_closed_list); -static LIST_HEAD(smd_ch_list); - -static unsigned char smd_ch_allocated[64]; -static struct work_struct probe_work; - -static void smd_alloc_channel(const char *name, uint32_t cid, uint32_t type); - -static void smd_channel_probe_worker(struct work_struct *work) -{ - struct smd_alloc_elm *shared; - unsigned n; - - shared = smem_find(ID_CH_ALLOC_TBL, sizeof(*shared) * 64); - - for (n = 0; n < 64; n++) { - if (smd_ch_allocated[n]) - continue; - if (!shared[n].ref_count) - continue; - if (!shared[n].name[0]) - continue; - smd_alloc_channel(shared[n].name, - shared[n].cid, - shared[n].ctype); - smd_ch_allocated[n] = 1; - } -} - -static char *chstate(unsigned n) -{ - switch (n) { - case SMD_SS_CLOSED: - return "CLOSED"; - case SMD_SS_OPENING: - return "OPENING"; - case SMD_SS_OPENED: - return "OPENED"; - case SMD_SS_FLUSHING: - return "FLUSHING"; - case SMD_SS_CLOSING: - return "CLOSING"; - case SMD_SS_RESET: - return "RESET"; - case SMD_SS_RESET_OPENING: - return "ROPENING"; - default: - return "UNKNOWN"; - } -} - -/* how many bytes are available for reading */ -static int smd_stream_read_avail(struct smd_channel *ch) -{ - return (ch->recv->head - ch->recv->tail) & (SMD_BUF_SIZE - 1); -} - -/* how many bytes we are free to write */ -static int smd_stream_write_avail(struct smd_channel *ch) -{ - return (SMD_BUF_SIZE - 1) - - ((ch->send->head - ch->send->tail) & (SMD_BUF_SIZE - 1)); -} - -static int smd_packet_read_avail(struct smd_channel *ch) -{ - if (ch->current_packet) { - int n = smd_stream_read_avail(ch); - if (n > ch->current_packet) - n = ch->current_packet; - return n; - } else { - return 0; - } -} - -static int smd_packet_write_avail(struct smd_channel *ch) -{ - int n = smd_stream_write_avail(ch); - return n > SMD_HEADER_SIZE ? n - SMD_HEADER_SIZE : 0; -} - -static int ch_is_open(struct smd_channel *ch) -{ - return (ch->recv->state == SMD_SS_OPENED) && - (ch->send->state == SMD_SS_OPENED); -} - -/* provide a pointer and length to readable data in the fifo */ -static unsigned ch_read_buffer(struct smd_channel *ch, void **ptr) -{ - unsigned head = ch->recv->head; - unsigned tail = ch->recv->tail; - *ptr = (void *) (ch->recv->data + tail); - - if (tail <= head) - return head - tail; - else - return SMD_BUF_SIZE - tail; -} - -/* advance the fifo read pointer after data from ch_read_buffer is consumed */ -static void ch_read_done(struct smd_channel *ch, unsigned count) -{ - BUG_ON(count > smd_stream_read_avail(ch)); - ch->recv->tail = (ch->recv->tail + count) & (SMD_BUF_SIZE - 1); - ch->recv->fTAIL = 1; -} - -/* basic read interface to ch_read_{buffer,done} used -** by smd_*_read() and update_packet_state() -** will read-and-discard if the _data pointer is null -*/ -static int ch_read(struct smd_channel *ch, void *_data, int len) -{ - void *ptr; - unsigned n; - unsigned char *data = _data; - int orig_len = len; - - while (len > 0) { - n = ch_read_buffer(ch, &ptr); - if (n == 0) - break; - - if (n > len) - n = len; - if (_data) - memcpy(data, ptr, n); - - data += n; - len -= n; - ch_read_done(ch, n); - } - - return orig_len - len; -} - -static void update_stream_state(struct smd_channel *ch) -{ - /* streams have no special state requiring updating */ -} - -static void update_packet_state(struct smd_channel *ch) -{ - unsigned hdr[5]; - int r; - - /* can't do anything if we're in the middle of a packet */ - if (ch->current_packet != 0) - return; - - /* don't bother unless we can get the full header */ - if (smd_stream_read_avail(ch) < SMD_HEADER_SIZE) - return; - - r = ch_read(ch, hdr, SMD_HEADER_SIZE); - BUG_ON(r != SMD_HEADER_SIZE); - - ch->current_packet = hdr[0]; -} - -/* provide a pointer and length to next free space in the fifo */ -static unsigned ch_write_buffer(struct smd_channel *ch, void **ptr) -{ - unsigned head = ch->send->head; - unsigned tail = ch->send->tail; - *ptr = (void *) (ch->send->data + head); - - if (head < tail) { - return tail - head - 1; - } else { - if (tail == 0) - return SMD_BUF_SIZE - head - 1; - else - return SMD_BUF_SIZE - head; - } -} - -/* advace the fifo write pointer after freespace - * from ch_write_buffer is filled - */ -static void ch_write_done(struct smd_channel *ch, unsigned count) -{ - BUG_ON(count > smd_stream_write_avail(ch)); - ch->send->head = (ch->send->head + count) & (SMD_BUF_SIZE - 1); - ch->send->fHEAD = 1; -} - -static void hc_set_state(volatile struct smd_half_channel *hc, unsigned n) -{ - if (n == SMD_SS_OPENED) { - hc->fDSR = 1; - hc->fCTS = 1; - hc->fCD = 1; - } else { - hc->fDSR = 0; - hc->fCTS = 0; - hc->fCD = 0; - } - hc->state = n; - hc->fSTATE = 1; - notify_other_smd(); -} - -static void do_smd_probe(void) -{ - struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE; - if (shared->heap_info.free_offset != last_heap_free) { - last_heap_free = shared->heap_info.free_offset; - schedule_work(&probe_work); - } -} - -static void smd_state_change(struct smd_channel *ch, - unsigned last, unsigned next) -{ - ch->last_state = next; - - pr_info("SMD: ch %d %s -> %s\n", ch->n, - chstate(last), chstate(next)); - - switch (next) { - case SMD_SS_OPENING: - ch->recv->tail = 0; - case SMD_SS_OPENED: - if (ch->send->state != SMD_SS_OPENED) - hc_set_state(ch->send, SMD_SS_OPENED); - ch->notify(ch->priv, SMD_EVENT_OPEN); - break; - case SMD_SS_FLUSHING: - case SMD_SS_RESET: - /* we should force them to close? */ - default: - ch->notify(ch->priv, SMD_EVENT_CLOSE); - } -} - -static irqreturn_t smd_irq_handler(int irq, void *data) -{ - unsigned long flags; - struct smd_channel *ch; - int do_notify = 0; - unsigned ch_flags; - unsigned tmp; - - spin_lock_irqsave(&smd_lock, flags); - list_for_each_entry(ch, &smd_ch_list, ch_list) { - ch_flags = 0; - if (ch_is_open(ch)) { - if (ch->recv->fHEAD) { - ch->recv->fHEAD = 0; - ch_flags |= 1; - do_notify |= 1; - } - if (ch->recv->fTAIL) { - ch->recv->fTAIL = 0; - ch_flags |= 2; - do_notify |= 1; - } - if (ch->recv->fSTATE) { - ch->recv->fSTATE = 0; - ch_flags |= 4; - do_notify |= 1; - } - } - tmp = ch->recv->state; - if (tmp != ch->last_state) - smd_state_change(ch, ch->last_state, tmp); - if (ch_flags) { - ch->update_state(ch); - ch->notify(ch->priv, SMD_EVENT_DATA); - } - } - if (do_notify) - notify_other_smd(); - spin_unlock_irqrestore(&smd_lock, flags); - do_smd_probe(); - return IRQ_HANDLED; -} - -static void smd_fake_irq_handler(unsigned long arg) -{ - smd_irq_handler(0, NULL); -} - -static DECLARE_TASKLET(smd_fake_irq_tasklet, smd_fake_irq_handler, 0); - -void smd_sleep_exit(void) -{ - unsigned long flags; - struct smd_channel *ch; - unsigned tmp; - int need_int = 0; - - spin_lock_irqsave(&smd_lock, flags); - list_for_each_entry(ch, &smd_ch_list, ch_list) { - if (ch_is_open(ch)) { - if (ch->recv->fHEAD) { - if (msm_smd_debug_mask & MSM_SMD_DEBUG) - pr_info("smd_sleep_exit ch %d fHEAD " - "%x %x %x\n", - ch->n, ch->recv->fHEAD, - ch->recv->head, ch->recv->tail); - need_int = 1; - break; - } - if (ch->recv->fTAIL) { - if (msm_smd_debug_mask & MSM_SMD_DEBUG) - pr_info("smd_sleep_exit ch %d fTAIL " - "%x %x %x\n", - ch->n, ch->recv->fTAIL, - ch->send->head, ch->send->tail); - need_int = 1; - break; - } - if (ch->recv->fSTATE) { - if (msm_smd_debug_mask & MSM_SMD_DEBUG) - pr_info("smd_sleep_exit ch %d fSTATE %x" - "\n", ch->n, ch->recv->fSTATE); - need_int = 1; - break; - } - tmp = ch->recv->state; - if (tmp != ch->last_state) { - if (msm_smd_debug_mask & MSM_SMD_DEBUG) - pr_info("smd_sleep_exit ch %d " - "state %x != %x\n", - ch->n, tmp, ch->last_state); - need_int = 1; - break; - } - } - } - spin_unlock_irqrestore(&smd_lock, flags); - do_smd_probe(); - if (need_int) { - if (msm_smd_debug_mask & MSM_SMD_DEBUG) - pr_info("smd_sleep_exit need interrupt\n"); - tasklet_schedule(&smd_fake_irq_tasklet); - } -} - - -void smd_kick(smd_channel_t *ch) -{ - unsigned long flags; - unsigned tmp; - - spin_lock_irqsave(&smd_lock, flags); - ch->update_state(ch); - tmp = ch->recv->state; - if (tmp != ch->last_state) { - ch->last_state = tmp; - if (tmp == SMD_SS_OPENED) - ch->notify(ch->priv, SMD_EVENT_OPEN); - else - ch->notify(ch->priv, SMD_EVENT_CLOSE); - } - ch->notify(ch->priv, SMD_EVENT_DATA); - notify_other_smd(); - spin_unlock_irqrestore(&smd_lock, flags); -} - -static int smd_is_packet(int chn) -{ - if ((chn > 4) || (chn == 1)) - return 1; - else - return 0; -} - -static int smd_stream_write(smd_channel_t *ch, const void *_data, int len) -{ - void *ptr; - const unsigned char *buf = _data; - unsigned xfer; - int orig_len = len; - - if (len < 0) - return -EINVAL; - - while ((xfer = ch_write_buffer(ch, &ptr)) != 0) { - if (!ch_is_open(ch)) - break; - if (xfer > len) - xfer = len; - memcpy(ptr, buf, xfer); - ch_write_done(ch, xfer); - len -= xfer; - buf += xfer; - if (len == 0) - break; - } - - notify_other_smd(); - - return orig_len - len; -} - -static int smd_packet_write(smd_channel_t *ch, const void *_data, int len) -{ - unsigned hdr[5]; - - if (len < 0) - return -EINVAL; - - if (smd_stream_write_avail(ch) < (len + SMD_HEADER_SIZE)) - return -ENOMEM; - - hdr[0] = len; - hdr[1] = hdr[2] = hdr[3] = hdr[4] = 0; - - smd_stream_write(ch, hdr, sizeof(hdr)); - smd_stream_write(ch, _data, len); - - return len; -} - -static int smd_stream_read(smd_channel_t *ch, void *data, int len) -{ - int r; - - if (len < 0) - return -EINVAL; - - r = ch_read(ch, data, len); - if (r > 0) - notify_other_smd(); - - return r; -} - -static int smd_packet_read(smd_channel_t *ch, void *data, int len) -{ - unsigned long flags; - int r; - - if (len < 0) - return -EINVAL; - - if (len > ch->current_packet) - len = ch->current_packet; - - r = ch_read(ch, data, len); - if (r > 0) - notify_other_smd(); - - spin_lock_irqsave(&smd_lock, flags); - ch->current_packet -= r; - update_packet_state(ch); - spin_unlock_irqrestore(&smd_lock, flags); - - return r; -} - -static void smd_alloc_channel(const char *name, uint32_t cid, uint32_t type) -{ - struct smd_channel *ch; - struct smd_shared *shared; - - shared = smem_alloc(ID_SMD_CHANNELS + cid, sizeof(*shared)); - if (!shared) { - pr_err("smd_alloc_channel() cid %d does not exist\n", cid); - return; - } - - ch = kzalloc(sizeof(struct smd_channel), GFP_KERNEL); - if (ch == 0) { - pr_err("smd_alloc_channel() out of memory\n"); - return; - } - - ch->send = &shared->ch0; - ch->recv = &shared->ch1; - ch->n = cid; - - if (smd_is_packet(cid)) { - ch->read = smd_packet_read; - ch->write = smd_packet_write; - ch->read_avail = smd_packet_read_avail; - ch->write_avail = smd_packet_write_avail; - ch->update_state = update_packet_state; - } else { - ch->read = smd_stream_read; - ch->write = smd_stream_write; - ch->read_avail = smd_stream_read_avail; - ch->write_avail = smd_stream_write_avail; - ch->update_state = update_stream_state; - } - - memcpy(ch->name, "SMD_", 4); - memcpy(ch->name + 4, name, 20); - ch->name[23] = 0; - ch->pdev.name = ch->name; - ch->pdev.id = -1; - - pr_info("smd_alloc_channel() '%s' cid=%d, shared=%p\n", - ch->name, ch->n, shared); - - mutex_lock(&smd_creation_mutex); - list_add(&ch->ch_list, &smd_ch_closed_list); - mutex_unlock(&smd_creation_mutex); - - platform_device_register(&ch->pdev); -} - -static void do_nothing_notify(void *priv, unsigned flags) -{ -} - -struct smd_channel *smd_get_channel(const char *name) -{ - struct smd_channel *ch; - - mutex_lock(&smd_creation_mutex); - list_for_each_entry(ch, &smd_ch_closed_list, ch_list) { - if (!strcmp(name, ch->name)) { - list_del(&ch->ch_list); - mutex_unlock(&smd_creation_mutex); - return ch; - } - } - mutex_unlock(&smd_creation_mutex); - - return NULL; -} - -int smd_open(const char *name, smd_channel_t **_ch, - void *priv, void (*notify)(void *, unsigned)) -{ - struct smd_channel *ch; - unsigned long flags; - - if (smd_initialized == 0) { - pr_info("smd_open() before smd_init()\n"); - return -ENODEV; - } - - ch = smd_get_channel(name); - if (!ch) - return -ENODEV; - - if (notify == 0) - notify = do_nothing_notify; - - ch->notify = notify; - ch->current_packet = 0; - ch->last_state = SMD_SS_CLOSED; - ch->priv = priv; - - *_ch = ch; - - spin_lock_irqsave(&smd_lock, flags); - list_add(&ch->ch_list, &smd_ch_list); - - /* If the remote side is CLOSING, we need to get it to - * move to OPENING (which we'll do by moving from CLOSED to - * OPENING) and then get it to move from OPENING to - * OPENED (by doing the same state change ourselves). - * - * Otherwise, it should be OPENING and we can move directly - * to OPENED so that it will follow. - */ - if (ch->recv->state == SMD_SS_CLOSING) { - ch->send->head = 0; - hc_set_state(ch->send, SMD_SS_OPENING); - } else { - hc_set_state(ch->send, SMD_SS_OPENED); - } - spin_unlock_irqrestore(&smd_lock, flags); - smd_kick(ch); - - return 0; -} - -int smd_close(smd_channel_t *ch) -{ - unsigned long flags; - - pr_info("smd_close(%p)\n", ch); - - if (ch == 0) - return -1; - - spin_lock_irqsave(&smd_lock, flags); - ch->notify = do_nothing_notify; - list_del(&ch->ch_list); - hc_set_state(ch->send, SMD_SS_CLOSED); - spin_unlock_irqrestore(&smd_lock, flags); - - mutex_lock(&smd_creation_mutex); - list_add(&ch->ch_list, &smd_ch_closed_list); - mutex_unlock(&smd_creation_mutex); - - return 0; -} - -int smd_read(smd_channel_t *ch, void *data, int len) -{ - return ch->read(ch, data, len); -} - -int smd_write(smd_channel_t *ch, const void *data, int len) -{ - return ch->write(ch, data, len); -} - -int smd_read_avail(smd_channel_t *ch) -{ - return ch->read_avail(ch); -} - -int smd_write_avail(smd_channel_t *ch) -{ - return ch->write_avail(ch); -} - -int smd_wait_until_readable(smd_channel_t *ch, int bytes) -{ - return -1; -} - -int smd_wait_until_writable(smd_channel_t *ch, int bytes) -{ - return -1; -} - -int smd_cur_packet_size(smd_channel_t *ch) -{ - return ch->current_packet; -} - - -/* ------------------------------------------------------------------------- */ - -void *smem_alloc(unsigned id, unsigned size) -{ - return smem_find(id, size); -} - -static void *_smem_find(unsigned id, unsigned *size) -{ - struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE; - struct smem_heap_entry *toc = shared->heap_toc; - - if (id >= SMEM_NUM_ITEMS) - return 0; - - if (toc[id].allocated) { - *size = toc[id].size; - return (void *) (MSM_SHARED_RAM_BASE + toc[id].offset); - } - - return 0; -} - -void *smem_find(unsigned id, unsigned size_in) -{ - unsigned size; - void *ptr; - - ptr = _smem_find(id, &size); - if (!ptr) - return 0; - - size_in = ALIGN(size_in, 8); - if (size_in != size) { - pr_err("smem_find(%d, %d): wrong size %d\n", - id, size_in, size); - return 0; - } - - return ptr; -} - -static irqreturn_t smsm_irq_handler(int irq, void *data) -{ - unsigned long flags; - struct smsm_shared *smsm; - - spin_lock_irqsave(&smem_lock, flags); - smsm = smem_alloc(ID_SHARED_STATE, - 2 * sizeof(struct smsm_shared)); - - if (smsm == 0) { - pr_info("<SM NO STATE>\n"); - } else { - unsigned apps = smsm[0].state; - unsigned modm = smsm[1].state; - - if (msm_smd_debug_mask & MSM_SMSM_DEBUG) - pr_info("<SM %08x %08x>\n", apps, modm); - if (modm & SMSM_RESET) { - handle_modem_crash(); - } else { - apps |= SMSM_INIT; - if (modm & SMSM_SMDINIT) - apps |= SMSM_SMDINIT; - if (modm & SMSM_RPCINIT) - apps |= SMSM_RPCINIT; - } - - if (smsm[0].state != apps) { - if (msm_smd_debug_mask & MSM_SMSM_DEBUG) - pr_info("<SM %08x NOTIFY>\n", apps); - smsm[0].state = apps; - do_smd_probe(); - notify_other_smsm(); - } - } - spin_unlock_irqrestore(&smem_lock, flags); - return IRQ_HANDLED; -} - -int smsm_change_state(uint32_t clear_mask, uint32_t set_mask) -{ - unsigned long flags; - struct smsm_shared *smsm; - - spin_lock_irqsave(&smem_lock, flags); - - smsm = smem_alloc(ID_SHARED_STATE, - 2 * sizeof(struct smsm_shared)); - - if (smsm) { - if (smsm[1].state & SMSM_RESET) - handle_modem_crash(); - smsm[0].state = (smsm[0].state & ~clear_mask) | set_mask; - if (msm_smd_debug_mask & MSM_SMSM_DEBUG) - pr_info("smsm_change_state %x\n", - smsm[0].state); - notify_other_smsm(); - } - - spin_unlock_irqrestore(&smem_lock, flags); - - if (smsm == NULL) { - pr_err("smsm_change_state <SM NO STATE>\n"); - return -EIO; - } - return 0; -} - -uint32_t smsm_get_state(void) -{ - unsigned long flags; - struct smsm_shared *smsm; - uint32_t rv; - - spin_lock_irqsave(&smem_lock, flags); - - smsm = smem_alloc(ID_SHARED_STATE, - 2 * sizeof(struct smsm_shared)); - - if (smsm) - rv = smsm[1].state; - else - rv = 0; - - if (rv & SMSM_RESET) - handle_modem_crash(); - - spin_unlock_irqrestore(&smem_lock, flags); - - if (smsm == NULL) - pr_err("smsm_get_state <SM NO STATE>\n"); - return rv; -} - -int smsm_set_sleep_duration(uint32_t delay) -{ - uint32_t *ptr; - - ptr = smem_alloc(SMEM_SMSM_SLEEP_DELAY, sizeof(*ptr)); - if (ptr == NULL) { - pr_err("smsm_set_sleep_duration <SM NO SLEEP_DELAY>\n"); - return -EIO; - } - if (msm_smd_debug_mask & MSM_SMSM_DEBUG) - pr_info("smsm_set_sleep_duration %d -> %d\n", - *ptr, delay); - *ptr = delay; - return 0; -} - -int smsm_set_interrupt_info(struct smsm_interrupt_info *info) -{ - struct smsm_interrupt_info *ptr; - - ptr = smem_alloc(SMEM_SMSM_INT_INFO, sizeof(*ptr)); - if (ptr == NULL) { - pr_err("smsm_set_sleep_duration <SM NO INT_INFO>\n"); - return -EIO; - } - if (msm_smd_debug_mask & MSM_SMSM_DEBUG) - pr_info("smsm_set_interrupt_info %x %x -> %x %x\n", - ptr->aArm_en_mask, ptr->aArm_interrupts_pending, - info->aArm_en_mask, info->aArm_interrupts_pending); - *ptr = *info; - return 0; -} - -#define MAX_NUM_SLEEP_CLIENTS 64 -#define MAX_SLEEP_NAME_LEN 8 - -#define NUM_GPIO_INT_REGISTERS 6 -#define GPIO_SMEM_NUM_GROUPS 2 -#define GPIO_SMEM_MAX_PC_INTERRUPTS 8 - -struct tramp_gpio_save { - unsigned int enable; - unsigned int detect; - unsigned int polarity; -}; - -struct tramp_gpio_smem { - uint16_t num_fired[GPIO_SMEM_NUM_GROUPS]; - uint16_t fired[GPIO_SMEM_NUM_GROUPS][GPIO_SMEM_MAX_PC_INTERRUPTS]; - uint32_t enabled[NUM_GPIO_INT_REGISTERS]; - uint32_t detection[NUM_GPIO_INT_REGISTERS]; - uint32_t polarity[NUM_GPIO_INT_REGISTERS]; -}; - - -void smsm_print_sleep_info(void) -{ - unsigned long flags; - uint32_t *ptr; - struct tramp_gpio_smem *gpio; - struct smsm_interrupt_info *int_info; - - - spin_lock_irqsave(&smem_lock, flags); - - ptr = smem_alloc(SMEM_SMSM_SLEEP_DELAY, sizeof(*ptr)); - if (ptr) - pr_info("SMEM_SMSM_SLEEP_DELAY: %x\n", *ptr); - - ptr = smem_alloc(SMEM_SMSM_LIMIT_SLEEP, sizeof(*ptr)); - if (ptr) - pr_info("SMEM_SMSM_LIMIT_SLEEP: %x\n", *ptr); - - ptr = smem_alloc(SMEM_SLEEP_POWER_COLLAPSE_DISABLED, sizeof(*ptr)); - if (ptr) - pr_info("SMEM_SLEEP_POWER_COLLAPSE_DISABLED: %x\n", *ptr); - - int_info = smem_alloc(SMEM_SMSM_INT_INFO, sizeof(*int_info)); - if (int_info) - pr_info("SMEM_SMSM_INT_INFO %x %x %x\n", - int_info->aArm_en_mask, - int_info->aArm_interrupts_pending, - int_info->aArm_wakeup_reason); - - gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*gpio)); - if (gpio) { - int i; - for (i = 0; i < NUM_GPIO_INT_REGISTERS; i++) - pr_info("SMEM_GPIO_INT: %d: e %x d %x p %x\n", - i, gpio->enabled[i], gpio->detection[i], - gpio->polarity[i]); - - for (i = 0; i < GPIO_SMEM_NUM_GROUPS; i++) - pr_info("SMEM_GPIO_INT: %d: f %d: %d %d...\n", - i, gpio->num_fired[i], gpio->fired[i][0], - gpio->fired[i][1]); - } - - spin_unlock_irqrestore(&smem_lock, flags); -} - -int smd_core_init(void) -{ - int r; - pr_info("smd_core_init()\n"); - - r = request_irq(INT_A9_M2A_0, smd_irq_handler, - IRQF_TRIGGER_RISING, "smd_dev", 0); - if (r < 0) - return r; - r = enable_irq_wake(INT_A9_M2A_0); - if (r < 0) - pr_err("smd_core_init: enable_irq_wake failed for A9_M2A_0\n"); - - r = request_irq(INT_A9_M2A_5, smsm_irq_handler, - IRQF_TRIGGER_RISING, "smsm_dev", 0); - if (r < 0) { - free_irq(INT_A9_M2A_0, 0); - return r; - } - r = enable_irq_wake(INT_A9_M2A_5); - if (r < 0) - pr_err("smd_core_init: enable_irq_wake failed for A9_M2A_5\n"); - - /* we may have missed a signal while booting -- fake - * an interrupt to make sure we process any existing - * state - */ - smsm_irq_handler(0, 0); - - pr_info("smd_core_init() done\n"); - - return 0; -} - -#if defined(CONFIG_DEBUG_FS) - -static int dump_ch(char *buf, int max, int n, - struct smd_half_channel *s, - struct smd_half_channel *r) -{ - return scnprintf( - buf, max, - "ch%02d:" - " %8s(%04d/%04d) %c%c%c%c%c%c%c <->" - " %8s(%04d/%04d) %c%c%c%c%c%c%c\n", n, - chstate(s->state), s->tail, s->head, - s->fDSR ? 'D' : 'd', - s->fCTS ? 'C' : 'c', - s->fCD ? 'C' : 'c', - s->fRI ? 'I' : 'i', - s->fHEAD ? 'W' : 'w', - s->fTAIL ? 'R' : 'r', - s->fSTATE ? 'S' : 's', - chstate(r->state), r->tail, r->head, - r->fDSR ? 'D' : 'd', - r->fCTS ? 'R' : 'r', - r->fCD ? 'C' : 'c', - r->fRI ? 'I' : 'i', - r->fHEAD ? 'W' : 'w', - r->fTAIL ? 'R' : 'r', - r->fSTATE ? 'S' : 's' - ); -} - -static int debug_read_stat(char *buf, int max) -{ - struct smsm_shared *smsm; - char *msg; - int i = 0; - - smsm = smem_find(ID_SHARED_STATE, - 2 * sizeof(struct smsm_shared)); - - msg = smem_find(ID_DIAG_ERR_MSG, SZ_DIAG_ERR_MSG); - - if (smsm) { - if (smsm[1].state & SMSM_RESET) - i += scnprintf(buf + i, max - i, - "smsm: ARM9 HAS CRASHED\n"); - i += scnprintf(buf + i, max - i, "smsm: a9: %08x a11: %08x\n", - smsm[0].state, smsm[1].state); - } else { - i += scnprintf(buf + i, max - i, "smsm: cannot find\n"); - } - if (msg) { - msg[SZ_DIAG_ERR_MSG - 1] = 0; - i += scnprintf(buf + i, max - i, "diag: '%s'\n", msg); - } - return i; -} - -static int debug_read_mem(char *buf, int max) -{ - unsigned n; - struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE; - struct smem_heap_entry *toc = shared->heap_toc; - int i = 0; - - i += scnprintf(buf + i, max - i, - "heap: init=%d free=%d remain=%d\n", - shared->heap_info.initialized, - shared->heap_info.free_offset, - shared->heap_info.heap_remaining); - - for (n = 0; n < SMEM_NUM_ITEMS; n++) { - if (toc[n].allocated == 0) - continue; - i += scnprintf(buf + i, max - i, - "%04d: offsed %08x size %08x\n", - n, toc[n].offset, toc[n].size); - } - return i; -} - -static int debug_read_ch(char *buf, int max) -{ - struct smd_shared *shared; - int n, i = 0; - - for (n = 0; n < SMD_CHANNELS; n++) { - shared = smem_find(ID_SMD_CHANNELS + n, - sizeof(struct smd_shared)); - if (shared == 0) - continue; - i += dump_ch(buf + i, max - i, n, &shared->ch0, &shared->ch1); - } - - return i; -} - -static int debug_read_version(char *buf, int max) -{ - struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE; - unsigned version = shared->version[VERSION_MODEM]; - return sprintf(buf, "%d.%d\n", version >> 16, version & 0xffff); -} - -static int debug_read_build_id(char *buf, int max) -{ - unsigned size; - void *data; - - data = _smem_find(SMEM_HW_SW_BUILD_ID, &size); - if (!data) - return 0; - - if (size >= max) - size = max; - memcpy(buf, data, size); - - return size; -} - -static int debug_read_alloc_tbl(char *buf, int max) -{ - struct smd_alloc_elm *shared; - int n, i = 0; - - shared = smem_find(ID_CH_ALLOC_TBL, sizeof(*shared) * 64); - - for (n = 0; n < 64; n++) { - if (shared[n].ref_count == 0) - continue; - i += scnprintf(buf + i, max - i, - "%03d: %20s cid=%02d ctype=%d ref_count=%d\n", - n, shared[n].name, shared[n].cid, - shared[n].ctype, shared[n].ref_count); - } - - return i; -} - -static int debug_boom(char *buf, int max) -{ - unsigned ms = 5000; - msm_proc_comm(PCOM_RESET_MODEM, &ms, 0); - return 0; -} - -#define DEBUG_BUFMAX 4096 -static char debug_buffer[DEBUG_BUFMAX]; - -static ssize_t debug_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - int (*fill)(char *buf, int max) = file->private_data; - int bsize = fill(debug_buffer, DEBUG_BUFMAX); - return simple_read_from_buffer(buf, count, ppos, debug_buffer, bsize); -} - -static int debug_open(struct inode *inode, struct file *file) -{ - file->private_data = inode->i_private; - return 0; -} - -static const struct file_operations debug_ops = { - .read = debug_read, - .open = debug_open, -}; - -static void debug_create(const char *name, mode_t mode, - struct dentry *dent, - int (*fill)(char *buf, int max)) -{ - debugfs_create_file(name, mode, dent, fill, &debug_ops); -} - -static void smd_debugfs_init(void) -{ - struct dentry *dent; - - dent = debugfs_create_dir("smd", 0); - if (IS_ERR(dent)) - return; - - debug_create("ch", 0444, dent, debug_read_ch); - debug_create("stat", 0444, dent, debug_read_stat); - debug_create("mem", 0444, dent, debug_read_mem); - debug_create("version", 0444, dent, debug_read_version); - debug_create("tbl", 0444, dent, debug_read_alloc_tbl); - debug_create("build", 0444, dent, debug_read_build_id); - debug_create("boom", 0444, dent, debug_boom); -} -#else -static void smd_debugfs_init(void) {} -#endif - -static int __init msm_smd_probe(struct platform_device *pdev) -{ - pr_info("smd_init()\n"); - - INIT_WORK(&probe_work, smd_channel_probe_worker); - - if (smd_core_init()) { - pr_err("smd_core_init() failed\n"); - return -1; - } - - do_smd_probe(); - - msm_check_for_modem_crash = check_for_modem_crash; - - smd_debugfs_init(); - smd_initialized = 1; - - return 0; -} - -static struct platform_driver msm_smd_driver = { - .probe = msm_smd_probe, - .driver = { - .name = MODULE_NAME, - .owner = THIS_MODULE, - }, -}; - -static int __init msm_smd_init(void) -{ - return platform_driver_register(&msm_smd_driver); -} - -module_init(msm_smd_init); - -MODULE_DESCRIPTION("MSM Shared Memory Core"); -MODULE_AUTHOR("Brian Swetland <swetland@google.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/dream/smd/smd_private.h b/drivers/staging/dream/smd/smd_private.h deleted file mode 100644 index 1b2e1c89..0000000 --- a/drivers/staging/dream/smd/smd_private.h +++ /dev/null @@ -1,164 +0,0 @@ -/* arch/arm/mach-msm/smd_private.h - * - * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2007 QUALCOMM Incorporated - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ -#ifndef _ARCH_ARM_MACH_MSM_MSM_SMD_PRIVATE_H_ -#define _ARCH_ARM_MACH_MSM_MSM_SMD_PRIVATE_H_ - -struct smem_heap_info { - unsigned initialized; - unsigned free_offset; - unsigned heap_remaining; - unsigned reserved; -}; - -struct smem_heap_entry { - unsigned allocated; - unsigned offset; - unsigned size; - unsigned reserved; -}; - -struct smem_proc_comm { - unsigned command; - unsigned status; - unsigned data1; - unsigned data2; -}; - -#define PC_APPS 0 -#define PC_MODEM 1 - -#define VERSION_QDSP6 4 -#define VERSION_APPS_SBL 6 -#define VERSION_MODEM_SBL 7 -#define VERSION_APPS 8 -#define VERSION_MODEM 9 - -struct smem_shared { - struct smem_proc_comm proc_comm[4]; - unsigned version[32]; - struct smem_heap_info heap_info; - struct smem_heap_entry heap_toc[128]; -}; - -struct smsm_shared { - unsigned host; - unsigned state; -}; - -struct smsm_interrupt_info { - uint32_t aArm_en_mask; - uint32_t aArm_interrupts_pending; - uint32_t aArm_wakeup_reason; -}; - -#define SZ_DIAG_ERR_MSG 0xC8 -#define ID_DIAG_ERR_MSG SMEM_DIAG_ERR_MESSAGE -#define ID_SMD_CHANNELS SMEM_SMD_BASE_ID -#define ID_SHARED_STATE SMEM_SMSM_SHARED_STATE -#define ID_CH_ALLOC_TBL SMEM_CHANNEL_ALLOC_TBL - -#define SMSM_INIT 0x000001 -#define SMSM_SMDINIT 0x000008 -#define SMSM_RPCINIT 0x000020 -#define SMSM_RESET 0x000040 -#define SMSM_RSA 0x0080 -#define SMSM_RUN 0x000100 -#define SMSM_PWRC 0x0200 -#define SMSM_TIMEWAIT 0x0400 -#define SMSM_TIMEINIT 0x0800 -#define SMSM_PWRC_EARLY_EXIT 0x1000 -#define SMSM_WFPI 0x2000 -#define SMSM_SLEEP 0x4000 -#define SMSM_SLEEPEXIT 0x8000 -#define SMSM_OEMSBL_RELEASE 0x10000 -#define SMSM_PWRC_SUSPEND 0x200000 - -#define SMSM_WKUP_REASON_RPC 0x00000001 -#define SMSM_WKUP_REASON_INT 0x00000002 -#define SMSM_WKUP_REASON_GPIO 0x00000004 -#define SMSM_WKUP_REASON_TIMER 0x00000008 -#define SMSM_WKUP_REASON_ALARM 0x00000010 -#define SMSM_WKUP_REASON_RESET 0x00000020 - -void *smem_alloc(unsigned id, unsigned size); -int smsm_change_state(uint32_t clear_mask, uint32_t set_mask); -uint32_t smsm_get_state(void); -int smsm_set_sleep_duration(uint32_t delay); -int smsm_set_interrupt_info(struct smsm_interrupt_info *info); -void smsm_print_sleep_info(void); - -#define SMEM_NUM_SMD_CHANNELS 64 - -typedef enum { - /* fixed items */ - SMEM_PROC_COMM = 0, - SMEM_HEAP_INFO, - SMEM_ALLOCATION_TABLE, - SMEM_VERSION_INFO, - SMEM_HW_RESET_DETECT, - SMEM_AARM_WARM_BOOT, - SMEM_DIAG_ERR_MESSAGE, - SMEM_SPINLOCK_ARRAY, - SMEM_MEMORY_BARRIER_LOCATION, - - /* dynamic items */ - SMEM_AARM_PARTITION_TABLE, - SMEM_AARM_BAD_BLOCK_TABLE, - SMEM_RESERVE_BAD_BLOCKS, - SMEM_WM_UUID, - SMEM_CHANNEL_ALLOC_TBL, - SMEM_SMD_BASE_ID, - SMEM_SMEM_LOG_IDX = SMEM_SMD_BASE_ID + SMEM_NUM_SMD_CHANNELS, - SMEM_SMEM_LOG_EVENTS, - SMEM_SMEM_STATIC_LOG_IDX, - SMEM_SMEM_STATIC_LOG_EVENTS, - SMEM_SMEM_SLOW_CLOCK_SYNC, - SMEM_SMEM_SLOW_CLOCK_VALUE, - SMEM_BIO_LED_BUF, - SMEM_SMSM_SHARED_STATE, - SMEM_SMSM_INT_INFO, - SMEM_SMSM_SLEEP_DELAY, - SMEM_SMSM_LIMIT_SLEEP, - SMEM_SLEEP_POWER_COLLAPSE_DISABLED, - SMEM_KEYPAD_KEYS_PRESSED, - SMEM_KEYPAD_STATE_UPDATED, - SMEM_KEYPAD_STATE_IDX, - SMEM_GPIO_INT, - SMEM_MDDI_LCD_IDX, - SMEM_MDDI_HOST_DRIVER_STATE, - SMEM_MDDI_LCD_DISP_STATE, - SMEM_LCD_CUR_PANEL, - SMEM_MARM_BOOT_SEGMENT_INFO, - SMEM_AARM_BOOT_SEGMENT_INFO, - SMEM_SLEEP_STATIC, - SMEM_SCORPION_FREQUENCY, - SMEM_SMD_PROFILES, - SMEM_TSSC_BUSY, - SMEM_HS_SUSPEND_FILTER_INFO, - SMEM_BATT_INFO, - SMEM_APPS_BOOT_MODE, - SMEM_VERSION_FIRST, - SMEM_VERSION_LAST = SMEM_VERSION_FIRST + 24, - SMEM_OSS_RRCASN1_BUF1, - SMEM_OSS_RRCASN1_BUF2, - SMEM_ID_VENDOR0, - SMEM_ID_VENDOR1, - SMEM_ID_VENDOR2, - SMEM_HW_SW_BUILD_ID, - SMEM_NUM_ITEMS, -} smem_mem_type; - -#endif diff --git a/drivers/staging/dream/smd/smd_qmi.c b/drivers/staging/dream/smd/smd_qmi.c deleted file mode 100644 index 76fce51..0000000 --- a/drivers/staging/dream/smd/smd_qmi.c +++ /dev/null @@ -1,851 +0,0 @@ -/* arch/arm/mach-msm/smd_qmi.c - * - * QMI Control Driver -- Manages network data connections. - * - * Copyright (C) 2007 Google, Inc. - * Author: Brian Swetland <swetland@google.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/cdev.h> -#include <linux/device.h> -#include <linux/sched.h> -#include <linux/wait.h> -#include <linux/miscdevice.h> -#include <linux/workqueue.h> - -#include <linux/uaccess.h> -#include <mach/msm_smd.h> - -#define QMI_CTL 0x00 -#define QMI_WDS 0x01 -#define QMI_DMS 0x02 -#define QMI_NAS 0x03 - -#define QMI_RESULT_SUCCESS 0x0000 -#define QMI_RESULT_FAILURE 0x0001 - -struct qmi_msg { - unsigned char service; - unsigned char client_id; - unsigned short txn_id; - unsigned short type; - unsigned short size; - unsigned char *tlv; -}; - -#define qmi_ctl_client_id 0 - -#define STATE_OFFLINE 0 -#define STATE_QUERYING 1 -#define STATE_ONLINE 2 - -struct qmi_ctxt { - struct miscdevice misc; - - struct mutex lock; - - unsigned char ctl_txn_id; - unsigned char wds_client_id; - unsigned short wds_txn_id; - - unsigned wds_busy; - unsigned wds_handle; - unsigned state_dirty; - unsigned state; - - unsigned char addr[4]; - unsigned char mask[4]; - unsigned char gateway[4]; - unsigned char dns1[4]; - unsigned char dns2[4]; - - smd_channel_t *ch; - const char *ch_name; - - struct work_struct open_work; - struct work_struct read_work; -}; - -static struct qmi_ctxt *qmi_minor_to_ctxt(unsigned n); - -static void qmi_read_work(struct work_struct *ws); -static void qmi_open_work(struct work_struct *work); - -void qmi_ctxt_init(struct qmi_ctxt *ctxt, unsigned n) -{ - mutex_init(&ctxt->lock); - INIT_WORK(&ctxt->read_work, qmi_read_work); - INIT_WORK(&ctxt->open_work, qmi_open_work); - ctxt->ctl_txn_id = 1; - ctxt->wds_txn_id = 1; - ctxt->wds_busy = 1; - ctxt->state = STATE_OFFLINE; - -} - -static struct workqueue_struct *qmi_wq; - -static int verbose = 0; - -/* anyone waiting for a state change waits here */ -static DECLARE_WAIT_QUEUE_HEAD(qmi_wait_queue); - - -static void qmi_dump_msg(struct qmi_msg *msg, const char *prefix) -{ - unsigned sz, n; - unsigned char *x; - - if (!verbose) - return; - - printk(KERN_INFO - "qmi: %s: svc=%02x cid=%02x tid=%04x type=%04x size=%04x\n", - prefix, msg->service, msg->client_id, - msg->txn_id, msg->type, msg->size); - - x = msg->tlv; - sz = msg->size; - - while (sz >= 3) { - sz -= 3; - - n = x[1] | (x[2] << 8); - if (n > sz) - break; - - printk(KERN_INFO "qmi: %s: tlv: %02x %04x { ", - prefix, x[0], n); - x += 3; - sz -= n; - while (n-- > 0) - printk("%02x ", *x++); - printk("}\n"); - } -} - -int qmi_add_tlv(struct qmi_msg *msg, - unsigned type, unsigned size, const void *data) -{ - unsigned char *x = msg->tlv + msg->size; - - x[0] = type; - x[1] = size; - x[2] = size >> 8; - - memcpy(x + 3, data, size); - - msg->size += (size + 3); - - return 0; -} - -/* Extract a tagged item from a qmi message buffer, -** taking care not to overrun the buffer. -*/ -static int qmi_get_tlv(struct qmi_msg *msg, - unsigned type, unsigned size, void *data) -{ - unsigned char *x = msg->tlv; - unsigned len = msg->size; - unsigned n; - - while (len >= 3) { - len -= 3; - - /* size of this item */ - n = x[1] | (x[2] << 8); - if (n > len) - break; - - if (x[0] == type) { - if (n != size) - return -1; - memcpy(data, x + 3, size); - return 0; - } - - x += (n + 3); - len -= n; - } - - return -1; -} - -static unsigned qmi_get_status(struct qmi_msg *msg, unsigned *error) -{ - unsigned short status[2]; - if (qmi_get_tlv(msg, 0x02, sizeof(status), status)) { - *error = 0; - return QMI_RESULT_FAILURE; - } else { - *error = status[1]; - return status[0]; - } -} - -/* 0x01 <qmux-header> <payload> */ -#define QMUX_HEADER 13 - -/* should be >= HEADER + FOOTER */ -#define QMUX_OVERHEAD 16 - -static int qmi_send(struct qmi_ctxt *ctxt, struct qmi_msg *msg) -{ - unsigned char *data; - unsigned hlen; - unsigned len; - int r; - - qmi_dump_msg(msg, "send"); - - if (msg->service == QMI_CTL) - hlen = QMUX_HEADER - 1; - else - hlen = QMUX_HEADER; - - /* QMUX length is total header + total payload - IFC selector */ - len = hlen + msg->size - 1; - if (len > 0xffff) - return -1; - - data = msg->tlv - hlen; - - /* prepend encap and qmux header */ - *data++ = 0x01; /* ifc selector */ - - /* qmux header */ - *data++ = len; - *data++ = len >> 8; - *data++ = 0x00; /* flags: client */ - *data++ = msg->service; - *data++ = msg->client_id; - - /* qmi header */ - *data++ = 0x00; /* flags: send */ - *data++ = msg->txn_id; - if (msg->service != QMI_CTL) - *data++ = msg->txn_id >> 8; - - *data++ = msg->type; - *data++ = msg->type >> 8; - *data++ = msg->size; - *data++ = msg->size >> 8; - - /* len + 1 takes the interface selector into account */ - r = smd_write(ctxt->ch, msg->tlv - hlen, len + 1); - - if (r != len) - return -1; - else - return 0; -} - -static void qmi_process_ctl_msg(struct qmi_ctxt *ctxt, struct qmi_msg *msg) -{ - unsigned err; - if (msg->type == 0x0022) { - unsigned char n[2]; - if (qmi_get_status(msg, &err)) - return; - if (qmi_get_tlv(msg, 0x01, sizeof(n), n)) - return; - if (n[0] == QMI_WDS) { - printk(KERN_INFO - "qmi: ctl: wds use client_id 0x%02x\n", n[1]); - ctxt->wds_client_id = n[1]; - ctxt->wds_busy = 0; - } - } -} - -static int qmi_network_get_profile(struct qmi_ctxt *ctxt); - -static void swapaddr(unsigned char *src, unsigned char *dst) -{ - dst[0] = src[3]; - dst[1] = src[2]; - dst[2] = src[1]; - dst[3] = src[0]; -} - -static unsigned char zero[4]; -static void qmi_read_runtime_profile(struct qmi_ctxt *ctxt, struct qmi_msg *msg) -{ - unsigned char tmp[4]; - unsigned r; - - r = qmi_get_tlv(msg, 0x1e, 4, tmp); - swapaddr(r ? zero : tmp, ctxt->addr); - r = qmi_get_tlv(msg, 0x21, 4, tmp); - swapaddr(r ? zero : tmp, ctxt->mask); - r = qmi_get_tlv(msg, 0x20, 4, tmp); - swapaddr(r ? zero : tmp, ctxt->gateway); - r = qmi_get_tlv(msg, 0x15, 4, tmp); - swapaddr(r ? zero : tmp, ctxt->dns1); - r = qmi_get_tlv(msg, 0x16, 4, tmp); - swapaddr(r ? zero : tmp, ctxt->dns2); -} - -static void qmi_process_unicast_wds_msg(struct qmi_ctxt *ctxt, - struct qmi_msg *msg) -{ - unsigned err; - switch (msg->type) { - case 0x0021: - if (qmi_get_status(msg, &err)) { - printk(KERN_ERR - "qmi: wds: network stop failed (%04x)\n", err); - } else { - printk(KERN_INFO - "qmi: wds: network stopped\n"); - ctxt->state = STATE_OFFLINE; - ctxt->state_dirty = 1; - } - break; - case 0x0020: - if (qmi_get_status(msg, &err)) { - printk(KERN_ERR - "qmi: wds: network start failed (%04x)\n", err); - } else if (qmi_get_tlv(msg, 0x01, sizeof(ctxt->wds_handle), &ctxt->wds_handle)) { - printk(KERN_INFO - "qmi: wds no handle?\n"); - } else { - printk(KERN_INFO - "qmi: wds: got handle 0x%08x\n", - ctxt->wds_handle); - } - break; - case 0x002D: - printk("qmi: got network profile\n"); - if (ctxt->state == STATE_QUERYING) { - qmi_read_runtime_profile(ctxt, msg); - ctxt->state = STATE_ONLINE; - ctxt->state_dirty = 1; - } - break; - default: - printk(KERN_ERR "qmi: unknown msg type 0x%04x\n", msg->type); - } - ctxt->wds_busy = 0; -} - -static void qmi_process_broadcast_wds_msg(struct qmi_ctxt *ctxt, - struct qmi_msg *msg) -{ - if (msg->type == 0x0022) { - unsigned char n[2]; - if (qmi_get_tlv(msg, 0x01, sizeof(n), n)) - return; - switch (n[0]) { - case 1: - printk(KERN_INFO "qmi: wds: DISCONNECTED\n"); - ctxt->state = STATE_OFFLINE; - ctxt->state_dirty = 1; - break; - case 2: - printk(KERN_INFO "qmi: wds: CONNECTED\n"); - ctxt->state = STATE_QUERYING; - ctxt->state_dirty = 1; - qmi_network_get_profile(ctxt); - break; - case 3: - printk(KERN_INFO "qmi: wds: SUSPENDED\n"); - ctxt->state = STATE_OFFLINE; - ctxt->state_dirty = 1; - } - } else { - printk(KERN_ERR "qmi: unknown bcast msg type 0x%04x\n", msg->type); - } -} - -static void qmi_process_wds_msg(struct qmi_ctxt *ctxt, - struct qmi_msg *msg) -{ - printk(KERN_INFO "wds: %04x @ %02x\n", msg->type, msg->client_id); - if (msg->client_id == ctxt->wds_client_id) { - qmi_process_unicast_wds_msg(ctxt, msg); - } else if (msg->client_id == 0xff) { - qmi_process_broadcast_wds_msg(ctxt, msg); - } else { - printk(KERN_ERR - "qmi_process_wds_msg client id 0x%02x unknown\n", - msg->client_id); - } -} - -static void qmi_process_qmux(struct qmi_ctxt *ctxt, - unsigned char *buf, unsigned sz) -{ - struct qmi_msg msg; - - /* require a full header */ - if (sz < 5) - return; - - /* require a size that matches the buffer size */ - if (sz != (buf[0] | (buf[1] << 8))) - return; - - /* only messages from a service (bit7=1) are allowed */ - if (buf[2] != 0x80) - return; - - msg.service = buf[3]; - msg.client_id = buf[4]; - - /* annoyingly, CTL messages have a shorter TID */ - if (buf[3] == 0) { - if (sz < 7) - return; - msg.txn_id = buf[6]; - buf += 7; - sz -= 7; - } else { - if (sz < 8) - return; - msg.txn_id = buf[6] | (buf[7] << 8); - buf += 8; - sz -= 8; - } - - /* no type and size!? */ - if (sz < 4) - return; - sz -= 4; - - msg.type = buf[0] | (buf[1] << 8); - msg.size = buf[2] | (buf[3] << 8); - msg.tlv = buf + 4; - - if (sz != msg.size) - return; - - qmi_dump_msg(&msg, "recv"); - - mutex_lock(&ctxt->lock); - switch (msg.service) { - case QMI_CTL: - qmi_process_ctl_msg(ctxt, &msg); - break; - case QMI_WDS: - qmi_process_wds_msg(ctxt, &msg); - break; - default: - printk(KERN_ERR "qmi: msg from unknown svc 0x%02x\n", - msg.service); - break; - } - mutex_unlock(&ctxt->lock); - wake_up(&qmi_wait_queue); -} - -#define QMI_MAX_PACKET (256 + QMUX_OVERHEAD) - -static void qmi_read_work(struct work_struct *ws) -{ - struct qmi_ctxt *ctxt = container_of(ws, struct qmi_ctxt, read_work); - struct smd_channel *ch = ctxt->ch; - unsigned char buf[QMI_MAX_PACKET]; - int sz; - - for (;;) { - sz = smd_cur_packet_size(ch); - if (sz == 0) - break; - if (sz < smd_read_avail(ch)) - break; - if (sz > QMI_MAX_PACKET) { - smd_read(ch, 0, sz); - continue; - } - if (smd_read(ch, buf, sz) != sz) { - printk(KERN_ERR "qmi: not enough data?!\n"); - continue; - } - - /* interface selector must be 1 */ - if (buf[0] != 0x01) - continue; - - qmi_process_qmux(ctxt, buf + 1, sz - 1); - } -} - -static int qmi_request_wds_cid(struct qmi_ctxt *ctxt); - -static void qmi_open_work(struct work_struct *ws) -{ - struct qmi_ctxt *ctxt = container_of(ws, struct qmi_ctxt, open_work); - mutex_lock(&ctxt->lock); - qmi_request_wds_cid(ctxt); - mutex_unlock(&ctxt->lock); -} - -static void qmi_notify(void *priv, unsigned event) -{ - struct qmi_ctxt *ctxt = priv; - - switch (event) { - case SMD_EVENT_DATA: { - int sz; - sz = smd_cur_packet_size(ctxt->ch); - if ((sz > 0) && (sz <= smd_read_avail(ctxt->ch))) - queue_work(qmi_wq, &ctxt->read_work); - break; - } - case SMD_EVENT_OPEN: - printk(KERN_INFO "qmi: smd opened\n"); - queue_work(qmi_wq, &ctxt->open_work); - break; - case SMD_EVENT_CLOSE: - printk(KERN_INFO "qmi: smd closed\n"); - break; - } -} - -static int qmi_request_wds_cid(struct qmi_ctxt *ctxt) -{ - unsigned char data[64 + QMUX_OVERHEAD]; - struct qmi_msg msg; - unsigned char n; - - msg.service = QMI_CTL; - msg.client_id = qmi_ctl_client_id; - msg.txn_id = ctxt->ctl_txn_id; - msg.type = 0x0022; - msg.size = 0; - msg.tlv = data + QMUX_HEADER; - - ctxt->ctl_txn_id += 2; - - n = QMI_WDS; - qmi_add_tlv(&msg, 0x01, 0x01, &n); - - return qmi_send(ctxt, &msg); -} - -static int qmi_network_get_profile(struct qmi_ctxt *ctxt) -{ - unsigned char data[96 + QMUX_OVERHEAD]; - struct qmi_msg msg; - - msg.service = QMI_WDS; - msg.client_id = ctxt->wds_client_id; - msg.txn_id = ctxt->wds_txn_id; - msg.type = 0x002D; - msg.size = 0; - msg.tlv = data + QMUX_HEADER; - - ctxt->wds_txn_id += 2; - - return qmi_send(ctxt, &msg); -} - -static int qmi_network_up(struct qmi_ctxt *ctxt, char *apn) -{ - unsigned char data[96 + QMUX_OVERHEAD]; - struct qmi_msg msg; - char *auth_type; - char *user; - char *pass; - - for (user = apn; *user; user++) { - if (*user == ' ') { - *user++ = 0; - break; - } - } - for (pass = user; *pass; pass++) { - if (*pass == ' ') { - *pass++ = 0; - break; - } - } - - for (auth_type = pass; *auth_type; auth_type++) { - if (*auth_type == ' ') { - *auth_type++ = 0; - break; - } - } - - msg.service = QMI_WDS; - msg.client_id = ctxt->wds_client_id; - msg.txn_id = ctxt->wds_txn_id; - msg.type = 0x0020; - msg.size = 0; - msg.tlv = data + QMUX_HEADER; - - ctxt->wds_txn_id += 2; - - qmi_add_tlv(&msg, 0x14, strlen(apn), apn); - if (*auth_type) - qmi_add_tlv(&msg, 0x16, strlen(auth_type), auth_type); - if (*user) { - if (!*auth_type) { - unsigned char x; - x = 3; - qmi_add_tlv(&msg, 0x16, 1, &x); - } - qmi_add_tlv(&msg, 0x17, strlen(user), user); - if (*pass) - qmi_add_tlv(&msg, 0x18, strlen(pass), pass); - } - return qmi_send(ctxt, &msg); -} - -static int qmi_network_down(struct qmi_ctxt *ctxt) -{ - unsigned char data[16 + QMUX_OVERHEAD]; - struct qmi_msg msg; - - msg.service = QMI_WDS; - msg.client_id = ctxt->wds_client_id; - msg.txn_id = ctxt->wds_txn_id; - msg.type = 0x0021; - msg.size = 0; - msg.tlv = data + QMUX_HEADER; - - ctxt->wds_txn_id += 2; - - qmi_add_tlv(&msg, 0x01, sizeof(ctxt->wds_handle), &ctxt->wds_handle); - - return qmi_send(ctxt, &msg); -} - -static int qmi_print_state(struct qmi_ctxt *ctxt, char *buf, int max) -{ - int i; - char *statename; - - if (ctxt->state == STATE_ONLINE) { - statename = "up"; - } else if (ctxt->state == STATE_OFFLINE) { - statename = "down"; - } else { - statename = "busy"; - } - - i = scnprintf(buf, max, "STATE=%s\n", statename); - i += scnprintf(buf + i, max - i, "CID=%d\n", ctxt->wds_client_id); - - if (ctxt->state != STATE_ONLINE) - return i; - - i += scnprintf(buf + i, max - i, "ADDR=%d.%d.%d.%d\n", - ctxt->addr[0], ctxt->addr[1], ctxt->addr[2], ctxt->addr[3]); - i += scnprintf(buf + i, max - i, "MASK=%d.%d.%d.%d\n", - ctxt->mask[0], ctxt->mask[1], ctxt->mask[2], ctxt->mask[3]); - i += scnprintf(buf + i, max - i, "GATEWAY=%d.%d.%d.%d\n", - ctxt->gateway[0], ctxt->gateway[1], ctxt->gateway[2], - ctxt->gateway[3]); - i += scnprintf(buf + i, max - i, "DNS1=%d.%d.%d.%d\n", - ctxt->dns1[0], ctxt->dns1[1], ctxt->dns1[2], ctxt->dns1[3]); - i += scnprintf(buf + i, max - i, "DNS2=%d.%d.%d.%d\n", - ctxt->dns2[0], ctxt->dns2[1], ctxt->dns2[2], ctxt->dns2[3]); - - return i; -} - -static ssize_t qmi_read(struct file *fp, char __user *buf, - size_t count, loff_t *pos) -{ - struct qmi_ctxt *ctxt = fp->private_data; - char msg[256]; - int len; - int r; - - mutex_lock(&ctxt->lock); - for (;;) { - if (ctxt->state_dirty) { - ctxt->state_dirty = 0; - len = qmi_print_state(ctxt, msg, 256); - break; - } - mutex_unlock(&ctxt->lock); - r = wait_event_interruptible(qmi_wait_queue, ctxt->state_dirty); - if (r < 0) - return r; - mutex_lock(&ctxt->lock); - } - mutex_unlock(&ctxt->lock); - - if (len > count) - len = count; - - if (copy_to_user(buf, msg, len)) - return -EFAULT; - - return len; -} - - -static ssize_t qmi_write(struct file *fp, const char __user *buf, - size_t count, loff_t *pos) -{ - struct qmi_ctxt *ctxt = fp->private_data; - unsigned char cmd[64]; - int len; - int r; - - if (count < 1) - return 0; - - len = count > 63 ? 63 : count; - - if (copy_from_user(cmd, buf, len)) - return -EFAULT; - - cmd[len] = 0; - - /* lazy */ - if (cmd[len-1] == '\n') { - cmd[len-1] = 0; - len--; - } - - if (!strncmp(cmd, "verbose", 7)) { - verbose = 1; - } else if (!strncmp(cmd, "terse", 5)) { - verbose = 0; - } else if (!strncmp(cmd, "poll", 4)) { - ctxt->state_dirty = 1; - wake_up(&qmi_wait_queue); - } else if (!strncmp(cmd, "down", 4)) { -retry_down: - mutex_lock(&ctxt->lock); - if (ctxt->wds_busy) { - mutex_unlock(&ctxt->lock); - r = wait_event_interruptible(qmi_wait_queue, !ctxt->wds_busy); - if (r < 0) - return r; - goto retry_down; - } - ctxt->wds_busy = 1; - qmi_network_down(ctxt); - mutex_unlock(&ctxt->lock); - } else if (!strncmp(cmd, "up:", 3)) { -retry_up: - mutex_lock(&ctxt->lock); - if (ctxt->wds_busy) { - mutex_unlock(&ctxt->lock); - r = wait_event_interruptible(qmi_wait_queue, !ctxt->wds_busy); - if (r < 0) - return r; - goto retry_up; - } - ctxt->wds_busy = 1; - qmi_network_up(ctxt, cmd+3); - mutex_unlock(&ctxt->lock); - } else { - return -EINVAL; - } - - return count; -} - -static int qmi_open(struct inode *ip, struct file *fp) -{ - struct qmi_ctxt *ctxt = qmi_minor_to_ctxt(MINOR(ip->i_rdev)); - int r = 0; - - if (!ctxt) { - printk(KERN_ERR "unknown qmi misc %d\n", MINOR(ip->i_rdev)); - return -ENODEV; - } - - fp->private_data = ctxt; - - mutex_lock(&ctxt->lock); - if (ctxt->ch == 0) - r = smd_open(ctxt->ch_name, &ctxt->ch, ctxt, qmi_notify); - if (r == 0) - wake_up(&qmi_wait_queue); - mutex_unlock(&ctxt->lock); - - return r; -} - -static int qmi_release(struct inode *ip, struct file *fp) -{ - return 0; -} - -static struct file_operations qmi_fops = { - .owner = THIS_MODULE, - .read = qmi_read, - .write = qmi_write, - .open = qmi_open, - .release = qmi_release, -}; - -static struct qmi_ctxt qmi_device0 = { - .ch_name = "SMD_DATA5_CNTL", - .misc = { - .minor = MISC_DYNAMIC_MINOR, - .name = "qmi0", - .fops = &qmi_fops, - } -}; -static struct qmi_ctxt qmi_device1 = { - .ch_name = "SMD_DATA6_CNTL", - .misc = { - .minor = MISC_DYNAMIC_MINOR, - .name = "qmi1", - .fops = &qmi_fops, - } -}; -static struct qmi_ctxt qmi_device2 = { - .ch_name = "SMD_DATA7_CNTL", - .misc = { - .minor = MISC_DYNAMIC_MINOR, - .name = "qmi2", - .fops = &qmi_fops, - } -}; - -static struct qmi_ctxt *qmi_minor_to_ctxt(unsigned n) -{ - if (n == qmi_device0.misc.minor) - return &qmi_device0; - if (n == qmi_device1.misc.minor) - return &qmi_device1; - if (n == qmi_device2.misc.minor) - return &qmi_device2; - return 0; -} - -static int __init qmi_init(void) -{ - int ret; - - qmi_wq = create_singlethread_workqueue("qmi"); - if (qmi_wq == 0) - return -ENOMEM; - - qmi_ctxt_init(&qmi_device0, 0); - qmi_ctxt_init(&qmi_device1, 1); - qmi_ctxt_init(&qmi_device2, 2); - - ret = misc_register(&qmi_device0.misc); - if (ret == 0) - ret = misc_register(&qmi_device1.misc); - if (ret == 0) - ret = misc_register(&qmi_device2.misc); - return ret; -} - -module_init(qmi_init); diff --git a/drivers/staging/dream/smd/smd_rpcrouter.c b/drivers/staging/dream/smd/smd_rpcrouter.c deleted file mode 100644 index 8744a6e..0000000 --- a/drivers/staging/dream/smd/smd_rpcrouter.c +++ /dev/null @@ -1,1261 +0,0 @@ -/* arch/arm/mach-msm/smd_rpcrouter.c - * - * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2007-2009 QUALCOMM Incorporated. - * Author: San Mehat <san@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -/* TODO: handle cases where smd_write() will tempfail due to full fifo */ -/* TODO: thread priority? schedule a work to bump it? */ -/* TODO: maybe make server_list_lock a mutex */ -/* TODO: pool fragments to avoid kmalloc/kfree churn */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/cdev.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/types.h> -#include <linux/delay.h> -#include <linux/fs.h> -#include <linux/err.h> -#include <linux/sched.h> -#include <linux/poll.h> -#include <linux/slab.h> -#include <asm/uaccess.h> -#include <asm/byteorder.h> -#include <linux/platform_device.h> -#include <linux/uaccess.h> - -#include <mach/msm_smd.h> -#include "smd_rpcrouter.h" - -#define TRACE_R2R_MSG 0 -#define TRACE_R2R_RAW 0 -#define TRACE_RPC_MSG 0 -#define TRACE_NOTIFY_MSG 0 - -#define MSM_RPCROUTER_DEBUG 0 -#define MSM_RPCROUTER_DEBUG_PKT 0 -#define MSM_RPCROUTER_R2R_DEBUG 0 -#define DUMP_ALL_RECEIVED_HEADERS 0 - -#define DIAG(x...) printk("[RR] ERROR " x) - -#if MSM_RPCROUTER_DEBUG -#define D(x...) printk(x) -#else -#define D(x...) do {} while (0) -#endif - -#if TRACE_R2R_MSG -#define RR(x...) printk("[RR] "x) -#else -#define RR(x...) do {} while (0) -#endif - -#if TRACE_RPC_MSG -#define IO(x...) printk("[RPC] "x) -#else -#define IO(x...) do {} while (0) -#endif - -#if TRACE_NOTIFY_MSG -#define NTFY(x...) printk(KERN_ERR "[NOTIFY] "x) -#else -#define NTFY(x...) do {} while (0) -#endif - -static LIST_HEAD(local_endpoints); -static LIST_HEAD(remote_endpoints); - -static LIST_HEAD(server_list); - -static smd_channel_t *smd_channel; -static int initialized; -static wait_queue_head_t newserver_wait; -static wait_queue_head_t smd_wait; - -static DEFINE_SPINLOCK(local_endpoints_lock); -static DEFINE_SPINLOCK(remote_endpoints_lock); -static DEFINE_SPINLOCK(server_list_lock); -static DEFINE_SPINLOCK(smd_lock); - -static struct workqueue_struct *rpcrouter_workqueue; -static int rpcrouter_need_len; - -static atomic_t next_xid = ATOMIC_INIT(1); -static uint8_t next_pacmarkid; - -static void do_read_data(struct work_struct *work); -static void do_create_pdevs(struct work_struct *work); -static void do_create_rpcrouter_pdev(struct work_struct *work); - -static DECLARE_WORK(work_read_data, do_read_data); -static DECLARE_WORK(work_create_pdevs, do_create_pdevs); -static DECLARE_WORK(work_create_rpcrouter_pdev, do_create_rpcrouter_pdev); - -#define RR_STATE_IDLE 0 -#define RR_STATE_HEADER 1 -#define RR_STATE_BODY 2 -#define RR_STATE_ERROR 3 - -struct rr_context { - struct rr_packet *pkt; - uint8_t *ptr; - uint32_t state; /* current assembly state */ - uint32_t count; /* bytes needed in this state */ -}; - -static struct rr_context the_rr_context; - -static struct platform_device rpcrouter_pdev = { - .name = "oncrpc_router", - .id = -1, -}; - - -static int rpcrouter_send_control_msg(union rr_control_msg *msg) -{ - struct rr_header hdr; - unsigned long flags; - int need; - - if (!(msg->cmd == RPCROUTER_CTRL_CMD_HELLO) && !initialized) { - printk(KERN_ERR "rpcrouter_send_control_msg(): Warning, " - "router not initialized\n"); - return -EINVAL; - } - - hdr.version = RPCROUTER_VERSION; - hdr.type = msg->cmd; - hdr.src_pid = RPCROUTER_PID_LOCAL; - hdr.src_cid = RPCROUTER_ROUTER_ADDRESS; - hdr.confirm_rx = 0; - hdr.size = sizeof(*msg); - hdr.dst_pid = 0; - hdr.dst_cid = RPCROUTER_ROUTER_ADDRESS; - - /* TODO: what if channel is full? */ - - need = sizeof(hdr) + hdr.size; - spin_lock_irqsave(&smd_lock, flags); - while (smd_write_avail(smd_channel) < need) { - spin_unlock_irqrestore(&smd_lock, flags); - msleep(250); - spin_lock_irqsave(&smd_lock, flags); - } - smd_write(smd_channel, &hdr, sizeof(hdr)); - smd_write(smd_channel, msg, hdr.size); - spin_unlock_irqrestore(&smd_lock, flags); - return 0; -} - -static struct rr_server *rpcrouter_create_server(uint32_t pid, - uint32_t cid, - uint32_t prog, - uint32_t ver) -{ - struct rr_server *server; - unsigned long flags; - int rc; - - server = kmalloc(sizeof(struct rr_server), GFP_KERNEL); - if (!server) - return ERR_PTR(-ENOMEM); - - memset(server, 0, sizeof(struct rr_server)); - server->pid = pid; - server->cid = cid; - server->prog = prog; - server->vers = ver; - - spin_lock_irqsave(&server_list_lock, flags); - list_add_tail(&server->list, &server_list); - spin_unlock_irqrestore(&server_list_lock, flags); - - if (pid == RPCROUTER_PID_REMOTE) { - rc = msm_rpcrouter_create_server_cdev(server); - if (rc < 0) - goto out_fail; - } - return server; -out_fail: - spin_lock_irqsave(&server_list_lock, flags); - list_del(&server->list); - spin_unlock_irqrestore(&server_list_lock, flags); - kfree(server); - return ERR_PTR(rc); -} - -static void rpcrouter_destroy_server(struct rr_server *server) -{ - unsigned long flags; - - spin_lock_irqsave(&server_list_lock, flags); - list_del(&server->list); - spin_unlock_irqrestore(&server_list_lock, flags); - device_destroy(msm_rpcrouter_class, server->device_number); - kfree(server); -} - -static struct rr_server *rpcrouter_lookup_server(uint32_t prog, uint32_t ver) -{ - struct rr_server *server; - unsigned long flags; - - spin_lock_irqsave(&server_list_lock, flags); - list_for_each_entry(server, &server_list, list) { - if (server->prog == prog - && server->vers == ver) { - spin_unlock_irqrestore(&server_list_lock, flags); - return server; - } - } - spin_unlock_irqrestore(&server_list_lock, flags); - return NULL; -} - -static struct rr_server *rpcrouter_lookup_server_by_dev(dev_t dev) -{ - struct rr_server *server; - unsigned long flags; - - spin_lock_irqsave(&server_list_lock, flags); - list_for_each_entry(server, &server_list, list) { - if (server->device_number == dev) { - spin_unlock_irqrestore(&server_list_lock, flags); - return server; - } - } - spin_unlock_irqrestore(&server_list_lock, flags); - return NULL; -} - -struct msm_rpc_endpoint *msm_rpcrouter_create_local_endpoint(dev_t dev) -{ - struct msm_rpc_endpoint *ept; - unsigned long flags; - - ept = kmalloc(sizeof(struct msm_rpc_endpoint), GFP_KERNEL); - if (!ept) - return NULL; - memset(ept, 0, sizeof(struct msm_rpc_endpoint)); - - /* mark no reply outstanding */ - ept->reply_pid = 0xffffffff; - - ept->cid = (uint32_t) ept; - ept->pid = RPCROUTER_PID_LOCAL; - ept->dev = dev; - - if ((dev != msm_rpcrouter_devno) && (dev != MKDEV(0, 0))) { - struct rr_server *srv; - /* - * This is a userspace client which opened - * a program/ver devicenode. Bind the client - * to that destination - */ - srv = rpcrouter_lookup_server_by_dev(dev); - /* TODO: bug? really? */ - BUG_ON(!srv); - - ept->dst_pid = srv->pid; - ept->dst_cid = srv->cid; - ept->dst_prog = cpu_to_be32(srv->prog); - ept->dst_vers = cpu_to_be32(srv->vers); - - D("Creating local ept %p @ %08x:%08x\n", ept, srv->prog, srv->vers); - } else { - /* mark not connected */ - ept->dst_pid = 0xffffffff; - D("Creating a master local ept %p\n", ept); - } - - init_waitqueue_head(&ept->wait_q); - INIT_LIST_HEAD(&ept->read_q); - spin_lock_init(&ept->read_q_lock); - INIT_LIST_HEAD(&ept->incomplete); - - spin_lock_irqsave(&local_endpoints_lock, flags); - list_add_tail(&ept->list, &local_endpoints); - spin_unlock_irqrestore(&local_endpoints_lock, flags); - return ept; -} - -int msm_rpcrouter_destroy_local_endpoint(struct msm_rpc_endpoint *ept) -{ - int rc; - union rr_control_msg msg; - - msg.cmd = RPCROUTER_CTRL_CMD_REMOVE_CLIENT; - msg.cli.pid = ept->pid; - msg.cli.cid = ept->cid; - - RR("x REMOVE_CLIENT id=%d:%08x\n", ept->pid, ept->cid); - rc = rpcrouter_send_control_msg(&msg); - if (rc < 0) - return rc; - - list_del(&ept->list); - kfree(ept); - return 0; -} - -static int rpcrouter_create_remote_endpoint(uint32_t cid) -{ - struct rr_remote_endpoint *new_c; - unsigned long flags; - - new_c = kmalloc(sizeof(struct rr_remote_endpoint), GFP_KERNEL); - if (!new_c) - return -ENOMEM; - memset(new_c, 0, sizeof(struct rr_remote_endpoint)); - - new_c->cid = cid; - new_c->pid = RPCROUTER_PID_REMOTE; - init_waitqueue_head(&new_c->quota_wait); - spin_lock_init(&new_c->quota_lock); - - spin_lock_irqsave(&remote_endpoints_lock, flags); - list_add_tail(&new_c->list, &remote_endpoints); - spin_unlock_irqrestore(&remote_endpoints_lock, flags); - return 0; -} - -static struct msm_rpc_endpoint *rpcrouter_lookup_local_endpoint(uint32_t cid) -{ - struct msm_rpc_endpoint *ept; - unsigned long flags; - - spin_lock_irqsave(&local_endpoints_lock, flags); - list_for_each_entry(ept, &local_endpoints, list) { - if (ept->cid == cid) { - spin_unlock_irqrestore(&local_endpoints_lock, flags); - return ept; - } - } - spin_unlock_irqrestore(&local_endpoints_lock, flags); - return NULL; -} - -static struct rr_remote_endpoint *rpcrouter_lookup_remote_endpoint(uint32_t cid) -{ - struct rr_remote_endpoint *ept; - unsigned long flags; - - spin_lock_irqsave(&remote_endpoints_lock, flags); - list_for_each_entry(ept, &remote_endpoints, list) { - if (ept->cid == cid) { - spin_unlock_irqrestore(&remote_endpoints_lock, flags); - return ept; - } - } - spin_unlock_irqrestore(&remote_endpoints_lock, flags); - return NULL; -} - -static int process_control_msg(union rr_control_msg *msg, int len) -{ - union rr_control_msg ctl; - struct rr_server *server; - struct rr_remote_endpoint *r_ept; - int rc = 0; - unsigned long flags; - - if (len != sizeof(*msg)) { - printk(KERN_ERR "rpcrouter: r2r msg size %d != %d\n", - len, sizeof(*msg)); - return -EINVAL; - } - - switch (msg->cmd) { - case RPCROUTER_CTRL_CMD_HELLO: - RR("o HELLO\n"); - - RR("x HELLO\n"); - memset(&ctl, 0, sizeof(ctl)); - ctl.cmd = RPCROUTER_CTRL_CMD_HELLO; - rpcrouter_send_control_msg(&ctl); - - initialized = 1; - - /* Send list of servers one at a time */ - ctl.cmd = RPCROUTER_CTRL_CMD_NEW_SERVER; - - /* TODO: long time to hold a spinlock... */ - spin_lock_irqsave(&server_list_lock, flags); - list_for_each_entry(server, &server_list, list) { - ctl.srv.pid = server->pid; - ctl.srv.cid = server->cid; - ctl.srv.prog = server->prog; - ctl.srv.vers = server->vers; - - RR("x NEW_SERVER id=%d:%08x prog=%08x:%08x\n", - server->pid, server->cid, - server->prog, server->vers); - - rpcrouter_send_control_msg(&ctl); - } - spin_unlock_irqrestore(&server_list_lock, flags); - - queue_work(rpcrouter_workqueue, &work_create_rpcrouter_pdev); - break; - - case RPCROUTER_CTRL_CMD_RESUME_TX: - RR("o RESUME_TX id=%d:%08x\n", msg->cli.pid, msg->cli.cid); - - r_ept = rpcrouter_lookup_remote_endpoint(msg->cli.cid); - if (!r_ept) { - printk(KERN_ERR - "rpcrouter: Unable to resume client\n"); - break; - } - spin_lock_irqsave(&r_ept->quota_lock, flags); - r_ept->tx_quota_cntr = 0; - spin_unlock_irqrestore(&r_ept->quota_lock, flags); - wake_up(&r_ept->quota_wait); - break; - - case RPCROUTER_CTRL_CMD_NEW_SERVER: - RR("o NEW_SERVER id=%d:%08x prog=%08x:%08x\n", - msg->srv.pid, msg->srv.cid, msg->srv.prog, msg->srv.vers); - - server = rpcrouter_lookup_server(msg->srv.prog, msg->srv.vers); - - if (!server) { - server = rpcrouter_create_server( - msg->srv.pid, msg->srv.cid, - msg->srv.prog, msg->srv.vers); - if (!server) - return -ENOMEM; - /* - * XXX: Verify that its okay to add the - * client to our remote client list - * if we get a NEW_SERVER notification - */ - if (!rpcrouter_lookup_remote_endpoint(msg->srv.cid)) { - rc = rpcrouter_create_remote_endpoint( - msg->srv.cid); - if (rc < 0) - printk(KERN_ERR - "rpcrouter:Client create" - "error (%d)\n", rc); - } - schedule_work(&work_create_pdevs); - wake_up(&newserver_wait); - } else { - if ((server->pid == msg->srv.pid) && - (server->cid == msg->srv.cid)) { - printk(KERN_ERR "rpcrouter: Duplicate svr\n"); - } else { - server->pid = msg->srv.pid; - server->cid = msg->srv.cid; - } - } - break; - - case RPCROUTER_CTRL_CMD_REMOVE_SERVER: - RR("o REMOVE_SERVER prog=%08x:%d\n", - msg->srv.prog, msg->srv.vers); - server = rpcrouter_lookup_server(msg->srv.prog, msg->srv.vers); - if (server) - rpcrouter_destroy_server(server); - break; - - case RPCROUTER_CTRL_CMD_REMOVE_CLIENT: - RR("o REMOVE_CLIENT id=%d:%08x\n", msg->cli.pid, msg->cli.cid); - if (msg->cli.pid != RPCROUTER_PID_REMOTE) { - printk(KERN_ERR - "rpcrouter: Denying remote removal of " - "local client\n"); - break; - } - r_ept = rpcrouter_lookup_remote_endpoint(msg->cli.cid); - if (r_ept) { - spin_lock_irqsave(&remote_endpoints_lock, flags); - list_del(&r_ept->list); - spin_unlock_irqrestore(&remote_endpoints_lock, flags); - kfree(r_ept); - } - - /* Notify local clients of this event */ - printk(KERN_ERR "rpcrouter: LOCAL NOTIFICATION NOT IMP\n"); - rc = -ENOSYS; - - break; - default: - RR("o UNKNOWN(%08x)\n", msg->cmd); - rc = -ENOSYS; - } - - return rc; -} - -static void do_create_rpcrouter_pdev(struct work_struct *work) -{ - platform_device_register(&rpcrouter_pdev); -} - -static void do_create_pdevs(struct work_struct *work) -{ - unsigned long flags; - struct rr_server *server; - - /* TODO: race if destroyed while being registered */ - spin_lock_irqsave(&server_list_lock, flags); - list_for_each_entry(server, &server_list, list) { - if (server->pid == RPCROUTER_PID_REMOTE) { - if (server->pdev_name[0] == 0) { - spin_unlock_irqrestore(&server_list_lock, - flags); - msm_rpcrouter_create_server_pdev(server); - schedule_work(&work_create_pdevs); - return; - } - } - } - spin_unlock_irqrestore(&server_list_lock, flags); -} - -static void rpcrouter_smdnotify(void *_dev, unsigned event) -{ - if (event != SMD_EVENT_DATA) - return; - - wake_up(&smd_wait); -} - -static void *rr_malloc(unsigned sz) -{ - void *ptr = kmalloc(sz, GFP_KERNEL); - if (ptr) - return ptr; - - printk(KERN_ERR "rpcrouter: kmalloc of %d failed, retrying...\n", sz); - do { - ptr = kmalloc(sz, GFP_KERNEL); - } while (!ptr); - - return ptr; -} - -/* TODO: deal with channel teardown / restore */ -static int rr_read(void *data, int len) -{ - int rc; - unsigned long flags; -// printk("rr_read() %d\n", len); - for(;;) { - spin_lock_irqsave(&smd_lock, flags); - if (smd_read_avail(smd_channel) >= len) { - rc = smd_read(smd_channel, data, len); - spin_unlock_irqrestore(&smd_lock, flags); - if (rc == len) - return 0; - else - return -EIO; - } - rpcrouter_need_len = len; - spin_unlock_irqrestore(&smd_lock, flags); - -// printk("rr_read: waiting (%d)\n", len); - wait_event(smd_wait, smd_read_avail(smd_channel) >= len); - } - return 0; -} - -static uint32_t r2r_buf[RPCROUTER_MSGSIZE_MAX]; - -static void do_read_data(struct work_struct *work) -{ - struct rr_header hdr; - struct rr_packet *pkt; - struct rr_fragment *frag; - struct msm_rpc_endpoint *ept; - uint32_t pm, mid; - unsigned long flags; - - if (rr_read(&hdr, sizeof(hdr))) - goto fail_io; - -#if TRACE_R2R_RAW - RR("- ver=%d type=%d src=%d:%08x crx=%d siz=%d dst=%d:%08x\n", - hdr.version, hdr.type, hdr.src_pid, hdr.src_cid, - hdr.confirm_rx, hdr.size, hdr.dst_pid, hdr.dst_cid); -#endif - - if (hdr.version != RPCROUTER_VERSION) { - DIAG("version %d != %d\n", hdr.version, RPCROUTER_VERSION); - goto fail_data; - } - if (hdr.size > RPCROUTER_MSGSIZE_MAX) { - DIAG("msg size %d > max %d\n", hdr.size, RPCROUTER_MSGSIZE_MAX); - goto fail_data; - } - - if (hdr.dst_cid == RPCROUTER_ROUTER_ADDRESS) { - if (rr_read(r2r_buf, hdr.size)) - goto fail_io; - process_control_msg((void*) r2r_buf, hdr.size); - goto done; - } - - if (hdr.size < sizeof(pm)) { - DIAG("runt packet (no pacmark)\n"); - goto fail_data; - } - if (rr_read(&pm, sizeof(pm))) - goto fail_io; - - hdr.size -= sizeof(pm); - - frag = rr_malloc(hdr.size + sizeof(*frag)); - frag->next = NULL; - frag->length = hdr.size; - if (rr_read(frag->data, hdr.size)) - goto fail_io; - - ept = rpcrouter_lookup_local_endpoint(hdr.dst_cid); - if (!ept) { - DIAG("no local ept for cid %08x\n", hdr.dst_cid); - kfree(frag); - goto done; - } - - /* See if there is already a partial packet that matches our mid - * and if so, append this fragment to that packet. - */ - mid = PACMARK_MID(pm); - list_for_each_entry(pkt, &ept->incomplete, list) { - if (pkt->mid == mid) { - pkt->last->next = frag; - pkt->last = frag; - pkt->length += frag->length; - if (PACMARK_LAST(pm)) { - list_del(&pkt->list); - goto packet_complete; - } - goto done; - } - } - /* This mid is new -- create a packet for it, and put it on - * the incomplete list if this fragment is not a last fragment, - * otherwise put it on the read queue. - */ - pkt = rr_malloc(sizeof(struct rr_packet)); - pkt->first = frag; - pkt->last = frag; - memcpy(&pkt->hdr, &hdr, sizeof(hdr)); - pkt->mid = mid; - pkt->length = frag->length; - if (!PACMARK_LAST(pm)) { - list_add_tail(&pkt->list, &ept->incomplete); - goto done; - } - -packet_complete: - spin_lock_irqsave(&ept->read_q_lock, flags); - list_add_tail(&pkt->list, &ept->read_q); - wake_up(&ept->wait_q); - spin_unlock_irqrestore(&ept->read_q_lock, flags); -done: - - if (hdr.confirm_rx) { - union rr_control_msg msg; - - msg.cmd = RPCROUTER_CTRL_CMD_RESUME_TX; - msg.cli.pid = hdr.dst_pid; - msg.cli.cid = hdr.dst_cid; - - RR("x RESUME_TX id=%d:%08x\n", msg.cli.pid, msg.cli.cid); - rpcrouter_send_control_msg(&msg); - } - - queue_work(rpcrouter_workqueue, &work_read_data); - return; - -fail_io: -fail_data: - printk(KERN_ERR "rpc_router has died\n"); -} - -void msm_rpc_setup_req(struct rpc_request_hdr *hdr, uint32_t prog, - uint32_t vers, uint32_t proc) -{ - memset(hdr, 0, sizeof(struct rpc_request_hdr)); - hdr->xid = cpu_to_be32(atomic_add_return(1, &next_xid)); - hdr->rpc_vers = cpu_to_be32(2); - hdr->prog = cpu_to_be32(prog); - hdr->vers = cpu_to_be32(vers); - hdr->procedure = cpu_to_be32(proc); -} - -struct msm_rpc_endpoint *msm_rpc_open(void) -{ - struct msm_rpc_endpoint *ept; - - ept = msm_rpcrouter_create_local_endpoint(MKDEV(0, 0)); - if (ept == NULL) - return ERR_PTR(-ENOMEM); - - return ept; -} - -int msm_rpc_close(struct msm_rpc_endpoint *ept) -{ - return msm_rpcrouter_destroy_local_endpoint(ept); -} -EXPORT_SYMBOL(msm_rpc_close); - -int msm_rpc_write(struct msm_rpc_endpoint *ept, void *buffer, int count) -{ - struct rr_header hdr; - uint32_t pacmark; - struct rpc_request_hdr *rq = buffer; - struct rr_remote_endpoint *r_ept; - unsigned long flags; - int needed; - DEFINE_WAIT(__wait); - - /* TODO: fragmentation for large outbound packets */ - if (count > (RPCROUTER_MSGSIZE_MAX - sizeof(uint32_t)) || !count) - return -EINVAL; - - /* snoop the RPC packet and enforce permissions */ - - /* has to have at least the xid and type fields */ - if (count < (sizeof(uint32_t) * 2)) { - printk(KERN_ERR "rr_write: rejecting runt packet\n"); - return -EINVAL; - } - - if (rq->type == 0) { - /* RPC CALL */ - if (count < (sizeof(uint32_t) * 6)) { - printk(KERN_ERR - "rr_write: rejecting runt call packet\n"); - return -EINVAL; - } - if (ept->dst_pid == 0xffffffff) { - printk(KERN_ERR "rr_write: not connected\n"); - return -ENOTCONN; - } - -#if CONFIG_MSM_AMSS_VERSION >= 6350 - if ((ept->dst_prog != rq->prog) || - !msm_rpc_is_compatible_version( - be32_to_cpu(ept->dst_vers), - be32_to_cpu(rq->vers))) { -#else - if (ept->dst_prog != rq->prog || ept->dst_vers != rq->vers) { -#endif - printk(KERN_ERR - "rr_write: cannot write to %08x:%d " - "(bound to %08x:%d)\n", - be32_to_cpu(rq->prog), be32_to_cpu(rq->vers), - be32_to_cpu(ept->dst_prog), - be32_to_cpu(ept->dst_vers)); - return -EINVAL; - } - hdr.dst_pid = ept->dst_pid; - hdr.dst_cid = ept->dst_cid; - IO("CALL on ept %p to %08x:%08x @ %d:%08x (%d bytes) (xid %x proc %x)\n", - ept, - be32_to_cpu(rq->prog), be32_to_cpu(rq->vers), - ept->dst_pid, ept->dst_cid, count, - be32_to_cpu(rq->xid), be32_to_cpu(rq->procedure)); - } else { - /* RPC REPLY */ - /* TODO: locking */ - if (ept->reply_pid == 0xffffffff) { - printk(KERN_ERR - "rr_write: rejecting unexpected reply\n"); - return -EINVAL; - } - if (ept->reply_xid != rq->xid) { - printk(KERN_ERR - "rr_write: rejecting packet w/ bad xid\n"); - return -EINVAL; - } - - hdr.dst_pid = ept->reply_pid; - hdr.dst_cid = ept->reply_cid; - - /* consume this reply */ - ept->reply_pid = 0xffffffff; - - IO("REPLY on ept %p to xid=%d @ %d:%08x (%d bytes)\n", - ept, - be32_to_cpu(rq->xid), hdr.dst_pid, hdr.dst_cid, count); - } - - r_ept = rpcrouter_lookup_remote_endpoint(hdr.dst_cid); - - if (!r_ept) { - printk(KERN_ERR - "msm_rpc_write(): No route to ept " - "[PID %x CID %x]\n", hdr.dst_pid, hdr.dst_cid); - return -EHOSTUNREACH; - } - - /* Create routing header */ - hdr.type = RPCROUTER_CTRL_CMD_DATA; - hdr.version = RPCROUTER_VERSION; - hdr.src_pid = ept->pid; - hdr.src_cid = ept->cid; - hdr.confirm_rx = 0; - hdr.size = count + sizeof(uint32_t); - - for (;;) { - prepare_to_wait(&r_ept->quota_wait, &__wait, - TASK_INTERRUPTIBLE); - spin_lock_irqsave(&r_ept->quota_lock, flags); - if (r_ept->tx_quota_cntr < RPCROUTER_DEFAULT_RX_QUOTA) - break; - if (signal_pending(current) && - (!(ept->flags & MSM_RPC_UNINTERRUPTIBLE))) - break; - spin_unlock_irqrestore(&r_ept->quota_lock, flags); - schedule(); - } - finish_wait(&r_ept->quota_wait, &__wait); - - if (signal_pending(current) && - (!(ept->flags & MSM_RPC_UNINTERRUPTIBLE))) { - spin_unlock_irqrestore(&r_ept->quota_lock, flags); - return -ERESTARTSYS; - } - r_ept->tx_quota_cntr++; - if (r_ept->tx_quota_cntr == RPCROUTER_DEFAULT_RX_QUOTA) - hdr.confirm_rx = 1; - - /* bump pacmark while interrupts disabled to avoid race - * probably should be atomic op instead - */ - pacmark = PACMARK(count, ++next_pacmarkid, 0, 1); - - spin_unlock_irqrestore(&r_ept->quota_lock, flags); - - spin_lock_irqsave(&smd_lock, flags); - - needed = sizeof(hdr) + hdr.size; - while (smd_write_avail(smd_channel) < needed) { - spin_unlock_irqrestore(&smd_lock, flags); - msleep(250); - spin_lock_irqsave(&smd_lock, flags); - } - - /* TODO: deal with full fifo */ - smd_write(smd_channel, &hdr, sizeof(hdr)); - smd_write(smd_channel, &pacmark, sizeof(pacmark)); - smd_write(smd_channel, buffer, count); - - spin_unlock_irqrestore(&smd_lock, flags); - - return count; -} -EXPORT_SYMBOL(msm_rpc_write); - -/* - * NOTE: It is the responsibility of the caller to kfree buffer - */ -int msm_rpc_read(struct msm_rpc_endpoint *ept, void **buffer, - unsigned user_len, long timeout) -{ - struct rr_fragment *frag, *next; - char *buf; - int rc; - - rc = __msm_rpc_read(ept, &frag, user_len, timeout); - if (rc <= 0) - return rc; - - /* single-fragment messages conveniently can be - * returned as-is (the buffer is at the front) - */ - if (frag->next == 0) { - *buffer = (void*) frag; - return rc; - } - - /* multi-fragment messages, we have to do it the - * hard way, which is rather disgusting right now - */ - buf = rr_malloc(rc); - *buffer = buf; - - while (frag != NULL) { - memcpy(buf, frag->data, frag->length); - next = frag->next; - buf += frag->length; - kfree(frag); - frag = next; - } - - return rc; -} - -int msm_rpc_call(struct msm_rpc_endpoint *ept, uint32_t proc, - void *_request, int request_size, - long timeout) -{ - return msm_rpc_call_reply(ept, proc, - _request, request_size, - NULL, 0, timeout); -} -EXPORT_SYMBOL(msm_rpc_call); - -int msm_rpc_call_reply(struct msm_rpc_endpoint *ept, uint32_t proc, - void *_request, int request_size, - void *_reply, int reply_size, - long timeout) -{ - struct rpc_request_hdr *req = _request; - struct rpc_reply_hdr *reply; - int rc; - - if (request_size < sizeof(*req)) - return -ETOOSMALL; - - if (ept->dst_pid == 0xffffffff) - return -ENOTCONN; - - /* We can't use msm_rpc_setup_req() here, because dst_prog and - * dst_vers here are already in BE. - */ - memset(req, 0, sizeof(*req)); - req->xid = cpu_to_be32(atomic_add_return(1, &next_xid)); - req->rpc_vers = cpu_to_be32(2); - req->prog = ept->dst_prog; - req->vers = ept->dst_vers; - req->procedure = cpu_to_be32(proc); - - rc = msm_rpc_write(ept, req, request_size); - if (rc < 0) - return rc; - - for (;;) { - rc = msm_rpc_read(ept, (void*) &reply, -1, timeout); - if (rc < 0) - return rc; - if (rc < (3 * sizeof(uint32_t))) { - rc = -EIO; - break; - } - /* we should not get CALL packets -- ignore them */ - if (reply->type == 0) { - kfree(reply); - continue; - } - /* If an earlier call timed out, we could get the (no - * longer wanted) reply for it. Ignore replies that - * we don't expect. - */ - if (reply->xid != req->xid) { - kfree(reply); - continue; - } - if (reply->reply_stat != 0) { - rc = -EPERM; - break; - } - if (reply->data.acc_hdr.accept_stat != 0) { - rc = -EINVAL; - break; - } - if (_reply == NULL) { - rc = 0; - break; - } - if (rc > reply_size) { - rc = -ENOMEM; - } else { - memcpy(_reply, reply, rc); - } - break; - } - kfree(reply); - return rc; -} -EXPORT_SYMBOL(msm_rpc_call_reply); - - -static inline int ept_packet_available(struct msm_rpc_endpoint *ept) -{ - unsigned long flags; - int ret; - spin_lock_irqsave(&ept->read_q_lock, flags); - ret = !list_empty(&ept->read_q); - spin_unlock_irqrestore(&ept->read_q_lock, flags); - return ret; -} - -int __msm_rpc_read(struct msm_rpc_endpoint *ept, - struct rr_fragment **frag_ret, - unsigned len, long timeout) -{ - struct rr_packet *pkt; - struct rpc_request_hdr *rq; - DEFINE_WAIT(__wait); - unsigned long flags; - int rc; - - IO("READ on ept %p\n", ept); - - if (ept->flags & MSM_RPC_UNINTERRUPTIBLE) { - if (timeout < 0) { - wait_event(ept->wait_q, ept_packet_available(ept)); - } else { - rc = wait_event_timeout( - ept->wait_q, ept_packet_available(ept), - timeout); - if (rc == 0) - return -ETIMEDOUT; - } - } else { - if (timeout < 0) { - rc = wait_event_interruptible( - ept->wait_q, ept_packet_available(ept)); - if (rc < 0) - return rc; - } else { - rc = wait_event_interruptible_timeout( - ept->wait_q, ept_packet_available(ept), - timeout); - if (rc == 0) - return -ETIMEDOUT; - } - } - - spin_lock_irqsave(&ept->read_q_lock, flags); - if (list_empty(&ept->read_q)) { - spin_unlock_irqrestore(&ept->read_q_lock, flags); - return -EAGAIN; - } - pkt = list_first_entry(&ept->read_q, struct rr_packet, list); - if (pkt->length > len) { - spin_unlock_irqrestore(&ept->read_q_lock, flags); - return -ETOOSMALL; - } - list_del(&pkt->list); - spin_unlock_irqrestore(&ept->read_q_lock, flags); - - rc = pkt->length; - - *frag_ret = pkt->first; - rq = (void*) pkt->first->data; - if ((rc >= (sizeof(uint32_t) * 3)) && (rq->type == 0)) { - IO("READ on ept %p is a CALL on %08x:%08x proc %d xid %d\n", - ept, be32_to_cpu(rq->prog), be32_to_cpu(rq->vers), - be32_to_cpu(rq->procedure), - be32_to_cpu(rq->xid)); - /* RPC CALL */ - if (ept->reply_pid != 0xffffffff) { - printk(KERN_WARNING - "rr_read: lost previous reply xid...\n"); - } - /* TODO: locking? */ - ept->reply_pid = pkt->hdr.src_pid; - ept->reply_cid = pkt->hdr.src_cid; - ept->reply_xid = rq->xid; - } -#if TRACE_RPC_MSG - else if ((rc >= (sizeof(uint32_t) * 3)) && (rq->type == 1)) - IO("READ on ept %p is a REPLY\n", ept); - else IO("READ on ept %p (%d bytes)\n", ept, rc); -#endif - - kfree(pkt); - return rc; -} - -#if CONFIG_MSM_AMSS_VERSION >= 6350 -int msm_rpc_is_compatible_version(uint32_t server_version, - uint32_t client_version) -{ - if ((server_version & RPC_VERSION_MODE_MASK) != - (client_version & RPC_VERSION_MODE_MASK)) - return 0; - - if (server_version & RPC_VERSION_MODE_MASK) - return server_version == client_version; - - return ((server_version & RPC_VERSION_MAJOR_MASK) == - (client_version & RPC_VERSION_MAJOR_MASK)) && - ((server_version & RPC_VERSION_MINOR_MASK) >= - (client_version & RPC_VERSION_MINOR_MASK)); -} -EXPORT_SYMBOL(msm_rpc_is_compatible_version); - -static int msm_rpc_get_compatible_server(uint32_t prog, - uint32_t ver, - uint32_t *found_vers) -{ - struct rr_server *server; - unsigned long flags; - if (found_vers == NULL) - return 0; - - spin_lock_irqsave(&server_list_lock, flags); - list_for_each_entry(server, &server_list, list) { - if ((server->prog == prog) && - msm_rpc_is_compatible_version(server->vers, ver)) { - *found_vers = server->vers; - spin_unlock_irqrestore(&server_list_lock, flags); - return 0; - } - } - spin_unlock_irqrestore(&server_list_lock, flags); - return -1; -} -#endif - -struct msm_rpc_endpoint *msm_rpc_connect(uint32_t prog, uint32_t vers, unsigned flags) -{ - struct msm_rpc_endpoint *ept; - struct rr_server *server; - -#if CONFIG_MSM_AMSS_VERSION >= 6350 - if (!(vers & RPC_VERSION_MODE_MASK)) { - uint32_t found_vers; - if (msm_rpc_get_compatible_server(prog, vers, &found_vers) < 0) - return ERR_PTR(-EHOSTUNREACH); - if (found_vers != vers) { - D("RPC using new version %08x:{%08x --> %08x}\n", - prog, vers, found_vers); - vers = found_vers; - } - } -#endif - - server = rpcrouter_lookup_server(prog, vers); - if (!server) - return ERR_PTR(-EHOSTUNREACH); - - ept = msm_rpc_open(); - if (IS_ERR(ept)) - return ept; - - ept->flags = flags; - ept->dst_pid = server->pid; - ept->dst_cid = server->cid; - ept->dst_prog = cpu_to_be32(prog); - ept->dst_vers = cpu_to_be32(vers); - - return ept; -} -EXPORT_SYMBOL(msm_rpc_connect); - -uint32_t msm_rpc_get_vers(struct msm_rpc_endpoint *ept) -{ - return be32_to_cpu(ept->dst_vers); -} -EXPORT_SYMBOL(msm_rpc_get_vers); - -/* TODO: permission check? */ -int msm_rpc_register_server(struct msm_rpc_endpoint *ept, - uint32_t prog, uint32_t vers) -{ - int rc; - union rr_control_msg msg; - struct rr_server *server; - - server = rpcrouter_create_server(ept->pid, ept->cid, - prog, vers); - if (!server) - return -ENODEV; - - msg.srv.cmd = RPCROUTER_CTRL_CMD_NEW_SERVER; - msg.srv.pid = ept->pid; - msg.srv.cid = ept->cid; - msg.srv.prog = prog; - msg.srv.vers = vers; - - RR("x NEW_SERVER id=%d:%08x prog=%08x:%08x\n", - ept->pid, ept->cid, prog, vers); - - rc = rpcrouter_send_control_msg(&msg); - if (rc < 0) - return rc; - - return 0; -} - -/* TODO: permission check -- disallow unreg of somebody else's server */ -int msm_rpc_unregister_server(struct msm_rpc_endpoint *ept, - uint32_t prog, uint32_t vers) -{ - struct rr_server *server; - server = rpcrouter_lookup_server(prog, vers); - - if (!server) - return -ENOENT; - rpcrouter_destroy_server(server); - return 0; -} - -static int msm_rpcrouter_probe(struct platform_device *pdev) -{ - int rc; - - /* Initialize what we need to start processing */ - INIT_LIST_HEAD(&local_endpoints); - INIT_LIST_HEAD(&remote_endpoints); - - init_waitqueue_head(&newserver_wait); - init_waitqueue_head(&smd_wait); - - rpcrouter_workqueue = create_singlethread_workqueue("rpcrouter"); - if (!rpcrouter_workqueue) - return -ENOMEM; - - rc = msm_rpcrouter_init_devices(); - if (rc < 0) - goto fail_destroy_workqueue; - - /* Open up SMD channel 2 */ - initialized = 0; - rc = smd_open("SMD_RPCCALL", &smd_channel, NULL, rpcrouter_smdnotify); - if (rc < 0) - goto fail_remove_devices; - - queue_work(rpcrouter_workqueue, &work_read_data); - return 0; - - fail_remove_devices: - msm_rpcrouter_exit_devices(); - fail_destroy_workqueue: - destroy_workqueue(rpcrouter_workqueue); - return rc; -} - -static struct platform_driver msm_smd_channel2_driver = { - .probe = msm_rpcrouter_probe, - .driver = { - .name = "SMD_RPCCALL", - .owner = THIS_MODULE, - }, -}; - -static int __init rpcrouter_init(void) -{ - return platform_driver_register(&msm_smd_channel2_driver); -} - -module_init(rpcrouter_init); -MODULE_DESCRIPTION("MSM RPC Router"); -MODULE_AUTHOR("San Mehat <san@android.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/dream/smd/smd_rpcrouter.h b/drivers/staging/dream/smd/smd_rpcrouter.h deleted file mode 100644 index 86ab997..0000000 --- a/drivers/staging/dream/smd/smd_rpcrouter.h +++ /dev/null @@ -1,193 +0,0 @@ -/** arch/arm/mach-msm/smd_rpcrouter.h - * - * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2007-2008 QUALCOMM Incorporated. - * Author: San Mehat <san@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#ifndef _ARCH_ARM_MACH_MSM_SMD_RPCROUTER_H -#define _ARCH_ARM_MACH_MSM_SMD_RPCROUTER_H - -#include <linux/types.h> -#include <linux/list.h> -#include <linux/cdev.h> -#include <linux/platform_device.h> - -#include <mach/msm_smd.h> -#include <mach/msm_rpcrouter.h> - -/* definitions for the R2R wire protcol */ - -#define RPCROUTER_VERSION 1 -#define RPCROUTER_PROCESSORS_MAX 4 -#define RPCROUTER_MSGSIZE_MAX 512 - -#define RPCROUTER_CLIENT_BCAST_ID 0xffffffff -#define RPCROUTER_ROUTER_ADDRESS 0xfffffffe - -#define RPCROUTER_PID_LOCAL 1 -#define RPCROUTER_PID_REMOTE 0 - -#define RPCROUTER_CTRL_CMD_DATA 1 -#define RPCROUTER_CTRL_CMD_HELLO 2 -#define RPCROUTER_CTRL_CMD_BYE 3 -#define RPCROUTER_CTRL_CMD_NEW_SERVER 4 -#define RPCROUTER_CTRL_CMD_REMOVE_SERVER 5 -#define RPCROUTER_CTRL_CMD_REMOVE_CLIENT 6 -#define RPCROUTER_CTRL_CMD_RESUME_TX 7 -#define RPCROUTER_CTRL_CMD_EXIT 8 - -#define RPCROUTER_DEFAULT_RX_QUOTA 5 - -union rr_control_msg { - uint32_t cmd; - struct { - uint32_t cmd; - uint32_t prog; - uint32_t vers; - uint32_t pid; - uint32_t cid; - } srv; - struct { - uint32_t cmd; - uint32_t pid; - uint32_t cid; - } cli; -}; - -struct rr_header { - uint32_t version; - uint32_t type; - uint32_t src_pid; - uint32_t src_cid; - uint32_t confirm_rx; - uint32_t size; - uint32_t dst_pid; - uint32_t dst_cid; -}; - -/* internals */ - -#define RPCROUTER_MAX_REMOTE_SERVERS 100 - -struct rr_fragment { - unsigned char data[RPCROUTER_MSGSIZE_MAX]; - uint32_t length; - struct rr_fragment *next; -}; - -struct rr_packet { - struct list_head list; - struct rr_fragment *first; - struct rr_fragment *last; - struct rr_header hdr; - uint32_t mid; - uint32_t length; -}; - -#define PACMARK_LAST(n) ((n) & 0x80000000) -#define PACMARK_MID(n) (((n) >> 16) & 0xFF) -#define PACMARK_LEN(n) ((n) & 0xFFFF) - -static inline uint32_t PACMARK(uint32_t len, uint32_t mid, uint32_t first, - uint32_t last) -{ - return (len & 0xFFFF) | - ((mid & 0xFF) << 16) | - ((!!first) << 30) | - ((!!last) << 31); -} - -struct rr_server { - struct list_head list; - - uint32_t pid; - uint32_t cid; - uint32_t prog; - uint32_t vers; - - dev_t device_number; - struct cdev cdev; - struct device *device; - struct rpcsvr_platform_device p_device; - char pdev_name[32]; -}; - -struct rr_remote_endpoint { - uint32_t pid; - uint32_t cid; - - int tx_quota_cntr; - spinlock_t quota_lock; - wait_queue_head_t quota_wait; - - struct list_head list; -}; - -struct msm_rpc_endpoint { - struct list_head list; - - /* incomplete packets waiting for assembly */ - struct list_head incomplete; - - /* complete packets waiting to be read */ - struct list_head read_q; - spinlock_t read_q_lock; - wait_queue_head_t wait_q; - unsigned flags; - - /* endpoint address */ - uint32_t pid; - uint32_t cid; - - /* bound remote address - * if not connected (dst_pid == 0xffffffff) RPC_CALL writes fail - * RPC_CALLs must be to the prog/vers below or they will fail - */ - uint32_t dst_pid; - uint32_t dst_cid; - uint32_t dst_prog; /* be32 */ - uint32_t dst_vers; /* be32 */ - - /* reply remote address - * if reply_pid == 0xffffffff, none available - * RPC_REPLY writes may only go to the pid/cid/xid of the - * last RPC_CALL we received. - */ - uint32_t reply_pid; - uint32_t reply_cid; - uint32_t reply_xid; /* be32 */ - uint32_t next_pm; /* Pacmark sequence */ - - /* device node if this endpoint is accessed via userspace */ - dev_t dev; -}; - -/* shared between smd_rpcrouter*.c */ - -int __msm_rpc_read(struct msm_rpc_endpoint *ept, - struct rr_fragment **frag, - unsigned len, long timeout); - -struct msm_rpc_endpoint *msm_rpcrouter_create_local_endpoint(dev_t dev); -int msm_rpcrouter_destroy_local_endpoint(struct msm_rpc_endpoint *ept); - -int msm_rpcrouter_create_server_cdev(struct rr_server *server); -int msm_rpcrouter_create_server_pdev(struct rr_server *server); - -int msm_rpcrouter_init_devices(void); -void msm_rpcrouter_exit_devices(void); - -extern dev_t msm_rpcrouter_devno; -extern struct class *msm_rpcrouter_class; -#endif diff --git a/drivers/staging/dream/smd/smd_rpcrouter_device.c b/drivers/staging/dream/smd/smd_rpcrouter_device.c deleted file mode 100644 index e9c28ed..0000000 --- a/drivers/staging/dream/smd/smd_rpcrouter_device.c +++ /dev/null @@ -1,377 +0,0 @@ -/* arch/arm/mach-msm/smd_rpcrouter_device.c - * - * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2007-2009 QUALCOMM Incorporated. - * Author: San Mehat <san@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/cdev.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/types.h> -#include <linux/delay.h> -#include <linux/fs.h> -#include <linux/err.h> -#include <linux/sched.h> -#include <linux/poll.h> -#include <linux/platform_device.h> -#include <linux/msm_rpcrouter.h> -#include <linux/slab.h> - -#include <asm/uaccess.h> -#include <asm/byteorder.h> - -#include "smd_rpcrouter.h" - -#define SAFETY_MEM_SIZE 65536 - -/* Next minor # available for a remote server */ -static int next_minor = 1; - -struct class *msm_rpcrouter_class; -dev_t msm_rpcrouter_devno; - -static struct cdev rpcrouter_cdev; -static struct device *rpcrouter_device; - -static int rpcrouter_open(struct inode *inode, struct file *filp) -{ - int rc; - struct msm_rpc_endpoint *ept; - - rc = nonseekable_open(inode, filp); - if (rc < 0) - return rc; - - ept = msm_rpcrouter_create_local_endpoint(inode->i_rdev); - if (!ept) - return -ENOMEM; - - filp->private_data = ept; - return 0; -} - -static int rpcrouter_release(struct inode *inode, struct file *filp) -{ - struct msm_rpc_endpoint *ept; - ept = (struct msm_rpc_endpoint *) filp->private_data; - - return msm_rpcrouter_destroy_local_endpoint(ept); -} - -static ssize_t rpcrouter_read(struct file *filp, char __user *buf, - size_t count, loff_t *ppos) -{ - struct msm_rpc_endpoint *ept; - struct rr_fragment *frag, *next; - int rc; - - ept = (struct msm_rpc_endpoint *) filp->private_data; - - rc = __msm_rpc_read(ept, &frag, count, -1); - if (rc < 0) - return rc; - - count = rc; - - while (frag != NULL) { - if (copy_to_user(buf, frag->data, frag->length)) { - printk(KERN_ERR - "rpcrouter: could not copy all read data to user!\n"); - rc = -EFAULT; - } - buf += frag->length; - next = frag->next; - kfree(frag); - frag = next; - } - - return rc; -} - -static ssize_t rpcrouter_write(struct file *filp, const char __user *buf, - size_t count, loff_t *ppos) -{ - struct msm_rpc_endpoint *ept; - int rc = 0; - void *k_buffer; - - ept = (struct msm_rpc_endpoint *) filp->private_data; - - /* A check for safety, this seems non-standard */ - if (count > SAFETY_MEM_SIZE) - return -EINVAL; - - k_buffer = kmalloc(count, GFP_KERNEL); - if (!k_buffer) - return -ENOMEM; - - if (copy_from_user(k_buffer, buf, count)) { - rc = -EFAULT; - goto write_out_free; - } - - rc = msm_rpc_write(ept, k_buffer, count); - if (rc < 0) - goto write_out_free; - - rc = count; -write_out_free: - kfree(k_buffer); - return rc; -} - -static unsigned int rpcrouter_poll(struct file *filp, - struct poll_table_struct *wait) -{ - struct msm_rpc_endpoint *ept; - unsigned mask = 0; - ept = (struct msm_rpc_endpoint *) filp->private_data; - - /* If there's data already in the read queue, return POLLIN. - * Else, wait for the requested amount of time, and check again. - */ - - if (!list_empty(&ept->read_q)) - mask |= POLLIN; - - if (!mask) { - poll_wait(filp, &ept->wait_q, wait); - if (!list_empty(&ept->read_q)) - mask |= POLLIN; - } - - return mask; -} - -static long rpcrouter_ioctl(struct file *filp, unsigned int cmd, - unsigned long arg) -{ - struct msm_rpc_endpoint *ept; - struct rpcrouter_ioctl_server_args server_args; - int rc = 0; - uint32_t n; - - ept = (struct msm_rpc_endpoint *) filp->private_data; - switch (cmd) { - - case RPC_ROUTER_IOCTL_GET_VERSION: - n = RPC_ROUTER_VERSION_V1; - rc = put_user(n, (unsigned int *) arg); - break; - - case RPC_ROUTER_IOCTL_GET_MTU: - /* the pacmark word reduces the actual payload - * possible per message - */ - n = RPCROUTER_MSGSIZE_MAX - sizeof(uint32_t); - rc = put_user(n, (unsigned int *) arg); - break; - - case RPC_ROUTER_IOCTL_REGISTER_SERVER: - rc = copy_from_user(&server_args, (void *) arg, - sizeof(server_args)); - if (rc < 0) - break; - msm_rpc_register_server(ept, - server_args.prog, - server_args.vers); - break; - - case RPC_ROUTER_IOCTL_UNREGISTER_SERVER: - rc = copy_from_user(&server_args, (void *) arg, - sizeof(server_args)); - if (rc < 0) - break; - - msm_rpc_unregister_server(ept, - server_args.prog, - server_args.vers); - break; - - case RPC_ROUTER_IOCTL_GET_MINOR_VERSION: - n = MSM_RPC_GET_MINOR(msm_rpc_get_vers(ept)); - rc = put_user(n, (unsigned int *)arg); - break; - - default: - rc = -EINVAL; - break; - } - - return rc; -} - -static struct file_operations rpcrouter_server_fops = { - .owner = THIS_MODULE, - .open = rpcrouter_open, - .release = rpcrouter_release, - .read = rpcrouter_read, - .write = rpcrouter_write, - .poll = rpcrouter_poll, - .unlocked_ioctl = rpcrouter_ioctl, -}; - -static struct file_operations rpcrouter_router_fops = { - .owner = THIS_MODULE, - .open = rpcrouter_open, - .release = rpcrouter_release, - .read = rpcrouter_read, - .write = rpcrouter_write, - .poll = rpcrouter_poll, - .unlocked_ioctl = rpcrouter_ioctl, -}; - -int msm_rpcrouter_create_server_cdev(struct rr_server *server) -{ - int rc; - uint32_t dev_vers; - - if (next_minor == RPCROUTER_MAX_REMOTE_SERVERS) { - printk(KERN_ERR - "rpcrouter: Minor numbers exhausted - Increase " - "RPCROUTER_MAX_REMOTE_SERVERS\n"); - return -ENOBUFS; - } - -#if CONFIG_MSM_AMSS_VERSION >= 6350 - /* Servers with bit 31 set are remote msm servers with hashkey version. - * Servers with bit 31 not set are remote msm servers with - * backwards compatible version type in which case the minor number - * (lower 16 bits) is set to zero. - * - */ - if ((server->vers & RPC_VERSION_MODE_MASK)) - dev_vers = server->vers; - else - dev_vers = server->vers & RPC_VERSION_MAJOR_MASK; -#else - dev_vers = server->vers; -#endif - - server->device_number = - MKDEV(MAJOR(msm_rpcrouter_devno), next_minor++); - - server->device = - device_create(msm_rpcrouter_class, rpcrouter_device, - server->device_number, NULL, "%.8x:%.8x", - server->prog, dev_vers); - if (IS_ERR(server->device)) { - printk(KERN_ERR - "rpcrouter: Unable to create device (%ld)\n", - PTR_ERR(server->device)); - return PTR_ERR(server->device);; - } - - cdev_init(&server->cdev, &rpcrouter_server_fops); - server->cdev.owner = THIS_MODULE; - - rc = cdev_add(&server->cdev, server->device_number, 1); - if (rc < 0) { - printk(KERN_ERR - "rpcrouter: Unable to add chrdev (%d)\n", rc); - device_destroy(msm_rpcrouter_class, server->device_number); - return rc; - } - return 0; -} - -/* for backward compatible version type (31st bit cleared) - * clearing minor number (lower 16 bits) in device name - * is neccessary for driver binding - */ -int msm_rpcrouter_create_server_pdev(struct rr_server *server) -{ - sprintf(server->pdev_name, "rs%.8x:%.8x", - server->prog, -#if CONFIG_MSM_AMSS_VERSION >= 6350 - (server->vers & RPC_VERSION_MODE_MASK) ? server->vers : - (server->vers & RPC_VERSION_MAJOR_MASK)); -#else - server->vers); -#endif - - server->p_device.base.id = -1; - server->p_device.base.name = server->pdev_name; - - server->p_device.prog = server->prog; - server->p_device.vers = server->vers; - - platform_device_register(&server->p_device.base); - return 0; -} - -int msm_rpcrouter_init_devices(void) -{ - int rc; - int major; - - /* Create the device nodes */ - msm_rpcrouter_class = class_create(THIS_MODULE, "oncrpc"); - if (IS_ERR(msm_rpcrouter_class)) { - rc = -ENOMEM; - printk(KERN_ERR - "rpcrouter: failed to create oncrpc class\n"); - goto fail; - } - - rc = alloc_chrdev_region(&msm_rpcrouter_devno, 0, - RPCROUTER_MAX_REMOTE_SERVERS + 1, - "oncrpc"); - if (rc < 0) { - printk(KERN_ERR - "rpcrouter: Failed to alloc chardev region (%d)\n", rc); - goto fail_destroy_class; - } - - major = MAJOR(msm_rpcrouter_devno); - rpcrouter_device = device_create(msm_rpcrouter_class, NULL, - msm_rpcrouter_devno, NULL, "%.8x:%d", - 0, 0); - if (IS_ERR(rpcrouter_device)) { - rc = -ENOMEM; - goto fail_unregister_cdev_region; - } - - cdev_init(&rpcrouter_cdev, &rpcrouter_router_fops); - rpcrouter_cdev.owner = THIS_MODULE; - - rc = cdev_add(&rpcrouter_cdev, msm_rpcrouter_devno, 1); - if (rc < 0) - goto fail_destroy_device; - - return 0; - -fail_destroy_device: - device_destroy(msm_rpcrouter_class, msm_rpcrouter_devno); -fail_unregister_cdev_region: - unregister_chrdev_region(msm_rpcrouter_devno, - RPCROUTER_MAX_REMOTE_SERVERS + 1); -fail_destroy_class: - class_destroy(msm_rpcrouter_class); -fail: - return rc; -} - -void msm_rpcrouter_exit_devices(void) -{ - cdev_del(&rpcrouter_cdev); - device_destroy(msm_rpcrouter_class, msm_rpcrouter_devno); - unregister_chrdev_region(msm_rpcrouter_devno, - RPCROUTER_MAX_REMOTE_SERVERS + 1); - class_destroy(msm_rpcrouter_class); -} - diff --git a/drivers/staging/dream/smd/smd_rpcrouter_servers.c b/drivers/staging/dream/smd/smd_rpcrouter_servers.c deleted file mode 100644 index bec3ee9..0000000 --- a/drivers/staging/dream/smd/smd_rpcrouter_servers.c +++ /dev/null @@ -1,226 +0,0 @@ -/* arch/arm/mach-msm/rpc_servers.c - * - * Copyright (C) 2007 Google, Inc. - * Author: Iliyan Malchev <ibm@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/cdev.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/types.h> -#include <linux/fs.h> -#include <linux/kthread.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/wakelock.h> -#include <linux/slab.h> - -#include <linux/msm_rpcrouter.h> -#include <linux/uaccess.h> - -#include <mach/msm_rpcrouter.h> -#include "smd_rpcrouter.h" - -static struct msm_rpc_endpoint *endpoint; - -#define FLAG_REGISTERED 0x0001 - -static LIST_HEAD(rpc_server_list); -static DEFINE_MUTEX(rpc_server_list_lock); -static int rpc_servers_active; - -static void rpc_server_register(struct msm_rpc_server *server) -{ - int rc; - rc = msm_rpc_register_server(endpoint, server->prog, server->vers); - if (rc < 0) - printk(KERN_ERR "[rpcserver] error registering %p @ %08x:%d\n", - server, server->prog, server->vers); -} - -static struct msm_rpc_server *rpc_server_find(uint32_t prog, uint32_t vers) -{ - struct msm_rpc_server *server; - - mutex_lock(&rpc_server_list_lock); - list_for_each_entry(server, &rpc_server_list, list) { - if ((server->prog == prog) && -#if CONFIG_MSM_AMSS_VERSION >= 6350 - msm_rpc_is_compatible_version(server->vers, vers)) { -#else - server->vers == vers) { -#endif - mutex_unlock(&rpc_server_list_lock); - return server; - } - } - mutex_unlock(&rpc_server_list_lock); - return NULL; -} - -static void rpc_server_register_all(void) -{ - struct msm_rpc_server *server; - - mutex_lock(&rpc_server_list_lock); - list_for_each_entry(server, &rpc_server_list, list) { - if (!(server->flags & FLAG_REGISTERED)) { - rpc_server_register(server); - server->flags |= FLAG_REGISTERED; - } - } - mutex_unlock(&rpc_server_list_lock); -} - -int msm_rpc_create_server(struct msm_rpc_server *server) -{ - /* make sure we're in a sane state first */ - server->flags = 0; - INIT_LIST_HEAD(&server->list); - - mutex_lock(&rpc_server_list_lock); - list_add(&server->list, &rpc_server_list); - if (rpc_servers_active) { - rpc_server_register(server); - server->flags |= FLAG_REGISTERED; - } - mutex_unlock(&rpc_server_list_lock); - - return 0; -} - -static int rpc_send_accepted_void_reply(struct msm_rpc_endpoint *client, - uint32_t xid, uint32_t accept_status) -{ - int rc = 0; - uint8_t reply_buf[sizeof(struct rpc_reply_hdr)]; - struct rpc_reply_hdr *reply = (struct rpc_reply_hdr *)reply_buf; - - reply->xid = cpu_to_be32(xid); - reply->type = cpu_to_be32(1); /* reply */ - reply->reply_stat = cpu_to_be32(RPCMSG_REPLYSTAT_ACCEPTED); - - reply->data.acc_hdr.accept_stat = cpu_to_be32(accept_status); - reply->data.acc_hdr.verf_flavor = 0; - reply->data.acc_hdr.verf_length = 0; - - rc = msm_rpc_write(client, reply_buf, sizeof(reply_buf)); - if (rc < 0) - printk(KERN_ERR - "%s: could not write response: %d\n", - __FUNCTION__, rc); - - return rc; -} - -static int rpc_servers_thread(void *data) -{ - void *buffer; - struct rpc_request_hdr *req; - struct msm_rpc_server *server; - int rc; - - for (;;) { - rc = wait_event_interruptible(endpoint->wait_q, - !list_empty(&endpoint->read_q)); - rc = msm_rpc_read(endpoint, &buffer, -1, -1); - if (rc < 0) { - printk(KERN_ERR "%s: could not read: %d\n", - __FUNCTION__, rc); - break; - } - req = (struct rpc_request_hdr *)buffer; - - req->type = be32_to_cpu(req->type); - req->xid = be32_to_cpu(req->xid); - req->rpc_vers = be32_to_cpu(req->rpc_vers); - req->prog = be32_to_cpu(req->prog); - req->vers = be32_to_cpu(req->vers); - req->procedure = be32_to_cpu(req->procedure); - - server = rpc_server_find(req->prog, req->vers); - - if (req->rpc_vers != 2) - continue; - if (req->type != 0) - continue; - if (!server) { - rpc_send_accepted_void_reply( - endpoint, req->xid, - RPC_ACCEPTSTAT_PROG_UNAVAIL); - continue; - } - - rc = server->rpc_call(server, req, rc); - - switch (rc) { - case 0: - rpc_send_accepted_void_reply( - endpoint, req->xid, - RPC_ACCEPTSTAT_SUCCESS); - break; - default: - rpc_send_accepted_void_reply( - endpoint, req->xid, - RPC_ACCEPTSTAT_PROG_UNAVAIL); - break; - } - - kfree(buffer); - } - - do_exit(0); -} - -static int rpcservers_probe(struct platform_device *pdev) -{ - struct task_struct *server_thread; - - endpoint = msm_rpc_open(); - if (IS_ERR(endpoint)) - return PTR_ERR(endpoint); - - /* we're online -- register any servers installed beforehand */ - rpc_servers_active = 1; - rpc_server_register_all(); - - /* start the kernel thread */ - server_thread = kthread_run(rpc_servers_thread, NULL, "krpcserversd"); - if (IS_ERR(server_thread)) - return PTR_ERR(server_thread); - - return 0; -} - -static struct platform_driver rpcservers_driver = { - .probe = rpcservers_probe, - .driver = { - .name = "oncrpc_router", - .owner = THIS_MODULE, - }, -}; - -static int __init rpc_servers_init(void) -{ - return platform_driver_register(&rpcservers_driver); -} - -module_init(rpc_servers_init); - -MODULE_DESCRIPTION("MSM RPC Servers"); -MODULE_AUTHOR("Iliyan Malchev <ibm@android.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/dream/smd/smd_tty.c b/drivers/staging/dream/smd/smd_tty.c deleted file mode 100644 index f409449..0000000 --- a/drivers/staging/dream/smd/smd_tty.c +++ /dev/null @@ -1,208 +0,0 @@ -/* arch/arm/mach-msm/smd_tty.c - * - * Copyright (C) 2007 Google, Inc. - * Author: Brian Swetland <swetland@google.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ - -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/cdev.h> -#include <linux/device.h> -#include <linux/wait.h> - -#include <linux/tty.h> -#include <linux/tty_driver.h> -#include <linux/tty_flip.h> - -#include <mach/msm_smd.h> - -#define MAX_SMD_TTYS 32 - -static DEFINE_MUTEX(smd_tty_lock); - -struct smd_tty_info { - smd_channel_t *ch; - struct tty_struct *tty; - int open_count; -}; - -static struct smd_tty_info smd_tty[MAX_SMD_TTYS]; - - -static void smd_tty_notify(void *priv, unsigned event) -{ - unsigned char *ptr; - int avail; - struct smd_tty_info *info = priv; - struct tty_struct *tty = info->tty; - - if (!tty) - return; - - if (event != SMD_EVENT_DATA) - return; - - for (;;) { - if (test_bit(TTY_THROTTLED, &tty->flags)) break; - avail = smd_read_avail(info->ch); - if (avail == 0) break; - - avail = tty_prepare_flip_string(tty, &ptr, avail); - - if (smd_read(info->ch, ptr, avail) != avail) { - /* shouldn't be possible since we're in interrupt - ** context here and nobody else could 'steal' our - ** characters. - */ - printk(KERN_ERR "OOPS - smd_tty_buffer mismatch?!"); - } - - tty_flip_buffer_push(tty); - } - - /* XXX only when writable and necessary */ - tty_wakeup(tty); -} - -static int smd_tty_open(struct tty_struct *tty, struct file *f) -{ - int res = 0; - int n = tty->index; - struct smd_tty_info *info; - const char *name; - - if (n == 0) { - name = "SMD_DS"; - } else if (n == 27) { - name = "SMD_GPSNMEA"; - } else { - return -ENODEV; - } - - info = smd_tty + n; - - mutex_lock(&smd_tty_lock); - tty->driver_data = info; - - if (info->open_count++ == 0) { - info->tty = tty; - if (info->ch) { - smd_kick(info->ch); - } else { - res = smd_open(name, &info->ch, info, smd_tty_notify); - } - } - mutex_unlock(&smd_tty_lock); - - return res; -} - -static void smd_tty_close(struct tty_struct *tty, struct file *f) -{ - struct smd_tty_info *info = tty->driver_data; - - if (info == 0) - return; - - mutex_lock(&smd_tty_lock); - if (--info->open_count == 0) { - info->tty = 0; - tty->driver_data = 0; - if (info->ch) { - smd_close(info->ch); - info->ch = 0; - } - } - mutex_unlock(&smd_tty_lock); -} - -static int smd_tty_write(struct tty_struct *tty, const unsigned char *buf, int len) -{ - struct smd_tty_info *info = tty->driver_data; - int avail; - - /* if we're writing to a packet channel we will - ** never be able to write more data than there - ** is currently space for - */ - avail = smd_write_avail(info->ch); - if (len > avail) - len = avail; - - return smd_write(info->ch, buf, len); -} - -static int smd_tty_write_room(struct tty_struct *tty) -{ - struct smd_tty_info *info = tty->driver_data; - return smd_write_avail(info->ch); -} - -static int smd_tty_chars_in_buffer(struct tty_struct *tty) -{ - struct smd_tty_info *info = tty->driver_data; - return smd_read_avail(info->ch); -} - -static void smd_tty_unthrottle(struct tty_struct *tty) -{ - struct smd_tty_info *info = tty->driver_data; - smd_kick(info->ch); -} - -static struct tty_operations smd_tty_ops = { - .open = smd_tty_open, - .close = smd_tty_close, - .write = smd_tty_write, - .write_room = smd_tty_write_room, - .chars_in_buffer = smd_tty_chars_in_buffer, - .unthrottle = smd_tty_unthrottle, -}; - -static struct tty_driver *smd_tty_driver; - -static int __init smd_tty_init(void) -{ - int ret; - - smd_tty_driver = alloc_tty_driver(MAX_SMD_TTYS); - if (smd_tty_driver == 0) - return -ENOMEM; - - smd_tty_driver->owner = THIS_MODULE; - smd_tty_driver->driver_name = "smd_tty_driver"; - smd_tty_driver->name = "smd"; - smd_tty_driver->major = 0; - smd_tty_driver->minor_start = 0; - smd_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; - smd_tty_driver->subtype = SERIAL_TYPE_NORMAL; - smd_tty_driver->init_termios = tty_std_termios; - smd_tty_driver->init_termios.c_iflag = 0; - smd_tty_driver->init_termios.c_oflag = 0; - smd_tty_driver->init_termios.c_cflag = B38400 | CS8 | CREAD; - smd_tty_driver->init_termios.c_lflag = 0; - smd_tty_driver->flags = TTY_DRIVER_RESET_TERMIOS | - TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(smd_tty_driver, &smd_tty_ops); - - ret = tty_register_driver(smd_tty_driver); - if (ret) return ret; - - /* this should be dynamic */ - tty_register_device(smd_tty_driver, 0, 0); - tty_register_device(smd_tty_driver, 27, 0); - - return 0; -} - -module_init(smd_tty_init); |