diff options
| -rw-r--r-- | doc/driver-model/UDM-pci.txt | 4 | ||||
| -rw-r--r-- | drivers/pci/Makefile | 1 | ||||
| -rw-r--r-- | drivers/pci/pci_ixp.c | 351 |
3 files changed, 0 insertions, 356 deletions
diff --git a/doc/driver-model/UDM-pci.txt b/doc/driver-model/UDM-pci.txt index 059a432..1dce99d 100644 --- a/doc/driver-model/UDM-pci.txt +++ b/doc/driver-model/UDM-pci.txt @@ -125,10 +125,6 @@ III) Analysis of in-tree drivers Shared driver for indirect PCI bridges, several CONFIG macros - will require significant cleanup. - pci_ixp.c - --------- - Standard driver, specifies all read/write functions separately. - pci_sh4.c --------- Shared init function for SH4 drivers, uses dword for read/write ops. diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index 6182a59..f0dfb59 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -11,7 +11,6 @@ obj-$(CONFIG_PCI_INDIRECT_BRIDGE) += pci_indirect.o obj-$(CONFIG_PCI_GT64120) += pci_gt64120.o obj-$(CONFIG_PCI_MSC01) += pci_msc01.o obj-$(CONFIG_FTPCI100) += pci_ftpci100.o -obj-$(CONFIG_IXP_PCI) += pci_ixp.o obj-$(CONFIG_SH4_PCI) += pci_sh4.o obj-$(CONFIG_SH7751_PCI) +=pci_sh7751.o obj-$(CONFIG_SH7780_PCI) +=pci_sh7780.o diff --git a/drivers/pci/pci_ixp.c b/drivers/pci/pci_ixp.c deleted file mode 100644 index d71fda2..0000000 --- a/drivers/pci/pci_ixp.c +++ /dev/null @@ -1,351 +0,0 @@ -/* - * IXP PCI Init - * - * (C) Copyright 2011 - * Michael Schwingen, michael@schwingen.org - * (C) Copyright 2004 eslab.whut.edu.cn - * Yue Hu(huyue_whut@yahoo.com.cn), Ligong Xue(lgxue@hotmail.com) - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/processor.h> -#include <asm/io.h> -#include <pci.h> -#include <asm/arch/ixp425.h> -#include <asm/arch/ixp425pci.h> - -DECLARE_GLOBAL_DATA_PTR; - -static void non_prefetch_read(unsigned int addr, unsigned int cmd, - unsigned int *data); -static void non_prefetch_write(unsigned int addr, unsigned int cmd, - unsigned int data); - -/*define the sub vendor and subsystem to be used */ -#define IXP425_PCI_SUB_VENDOR_SYSTEM 0x00000000 - -#define PCI_MEMORY_BUS 0x00000000 -#define PCI_MEMORY_PHY 0x00000000 -#define PCI_MEMORY_SIZE 0x04000000 - -#define PCI_MEM_BUS 0x48000000 -#define PCI_MEM_PHY 0x00000000 -#define PCI_MEM_SIZE 0x04000000 - -#define PCI_IO_BUS 0x00000000 -#define PCI_IO_PHY 0x00000000 -#define PCI_IO_SIZE 0x00010000 - -/* build address value for config sycle */ -static unsigned int pci_config_addr(pci_dev_t bdf, unsigned int reg) -{ - unsigned int bus = PCI_BUS(bdf); - unsigned int dev = PCI_DEV(bdf); - unsigned int func = PCI_FUNC(bdf); - unsigned int addr; - - if (bus) { /* secondary bus, use type 1 config cycle */ - addr = bdf | (reg & ~3) | 1; - } else { - /* - primary bus, type 0 config cycle. address bits 31:28 - specify the device 10:8 specify the function - */ - addr = BIT((31 - dev)) | (func << 8) | (reg & ~3); - } - - return addr; -} - -static int pci_config_status(void) -{ - unsigned int regval; - - regval = readl(PCI_CSR_BASE + PCI_ISR_OFFSET); - if ((regval & PCI_ISR_PFE) == 0) - return OK; - - /* no device present, make sure that the master abort bit is reset */ - writel(PCI_ISR_PFE, PCI_CSR_BASE + PCI_ISR_OFFSET); - return ERROR; -} - -static int pci_ixp_hose_read_config_dword(struct pci_controller *hose, - pci_dev_t bdf, int where, unsigned int *val) -{ - unsigned int retval; - unsigned int addr; - int stat; - - debug("pci_ixp_hose_read_config_dword: bdf %x, reg %x", bdf, where); - /*Set the address to be read */ - addr = pci_config_addr(bdf, where); - non_prefetch_read(addr, NP_CMD_CONFIGREAD, &retval); - *val = retval; - - stat = pci_config_status(); - if (stat < 0) - *val = -1; - debug("-> val %x, status %x\n", *val, stat); - return stat; -} - -static int pci_ixp_hose_read_config_word(struct pci_controller *hose, - pci_dev_t bdf, int where, unsigned short *val) -{ - unsigned int n; - unsigned int retval; - unsigned int addr; - unsigned int byteEnables; - int stat; - - debug("pci_ixp_hose_read_config_word: bdf %x, reg %x", bdf, where); - n = where % 4; - /*byte enables are 4 bits active low, the position of each - bit maps to the byte that it enables */ - byteEnables = - (~(BIT(n) | BIT((n + 1)))) & - IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK; - byteEnables = byteEnables << PCI_NP_CBE_BESL; - /*Set the address to be read */ - addr = pci_config_addr(bdf, where); - non_prefetch_read(addr, byteEnables | NP_CMD_CONFIGREAD, &retval); - - /*Pick out the word we are interested in */ - *val = retval >> (8 * n); - - stat = pci_config_status(); - if (stat < 0) - *val = -1; - debug("-> val %x, status %x\n", *val, stat); - return stat; -} - -static int pci_ixp_hose_read_config_byte(struct pci_controller *hose, - pci_dev_t bdf, int where, unsigned char *val) -{ - unsigned int retval; - unsigned int n; - unsigned int byteEnables; - unsigned int addr; - int stat; - - debug("pci_ixp_hose_read_config_byte: bdf %x, reg %x", bdf, where); - n = where % 4; - /*byte enables are 4 bits, active low, the position of each - bit maps to the byte that it enables */ - byteEnables = (~BIT(n)) & IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK; - byteEnables = byteEnables << PCI_NP_CBE_BESL; - - /*Set the address to be read */ - addr = pci_config_addr(bdf, where); - non_prefetch_read(addr, byteEnables | NP_CMD_CONFIGREAD, &retval); - /*Pick out the byte we are interested in */ - *val = retval >> (8 * n); - - stat = pci_config_status(); - if (stat < 0) - *val = -1; - debug("-> val %x, status %x\n", *val, stat); - return stat; -} - -static int pci_ixp_hose_write_config_byte(struct pci_controller *hose, - pci_dev_t bdf, int where, unsigned char val) -{ - unsigned int addr; - unsigned int byteEnables; - unsigned int n; - unsigned int ldata; - int stat; - - debug("pci_ixp_hose_write_config_byte: bdf %x, reg %x, val %x", - bdf, where, val); - n = where % 4; - /*byte enables are 4 bits active low, the position of each - bit maps to the byte that it enables */ - byteEnables = (~BIT(n)) & IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK; - byteEnables = byteEnables << PCI_NP_CBE_BESL; - ldata = val << (8 * n); - /*Set the address to be written */ - addr = pci_config_addr(bdf, where); - non_prefetch_write(addr, byteEnables | NP_CMD_CONFIGWRITE, ldata); - - stat = pci_config_status(); - debug("-> status %x\n", stat); - return stat; -} - -static int pci_ixp_hose_write_config_word(struct pci_controller *hose, - pci_dev_t bdf, int where, unsigned short val) -{ - unsigned int addr; - unsigned int byteEnables; - unsigned int n; - unsigned int ldata; - int stat; - - debug("pci_ixp_hose_write_config_word: bdf %x, reg %x, val %x", - bdf, where, val); - n = where % 4; - /*byte enables are 4 bits active low, the position of each - bit maps to the byte that it enables */ - byteEnables = - (~(BIT(n) | BIT((n + 1)))) & - IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK; - byteEnables = byteEnables << PCI_NP_CBE_BESL; - ldata = val << (8 * n); - /*Set the address to be written */ - addr = pci_config_addr(bdf, where); - non_prefetch_write(addr, byteEnables | NP_CMD_CONFIGWRITE, ldata); - - stat = pci_config_status(); - debug("-> status %x\n", stat); - return stat; -} - -static int pci_ixp_hose_write_config_dword(struct pci_controller *hose, - pci_dev_t bdf, int where, unsigned int val) -{ - unsigned int addr; - int stat; - - debug("pci_ixp_hose_write_config_dword: bdf %x, reg %x, val %x", - bdf, where, val); - /*Set the address to be written */ - addr = pci_config_addr(bdf, where); - non_prefetch_write(addr, NP_CMD_CONFIGWRITE, val); - - stat = pci_config_status(); - debug("-> status %x\n", stat); - return stat; -} - -static void non_prefetch_read(unsigned int addr, - unsigned int cmd, unsigned int *data) -{ - writel(addr, PCI_CSR_BASE + PCI_NP_AD_OFFSET); - - /*set up and execute the read */ - writel(cmd, PCI_CSR_BASE + PCI_NP_CBE_OFFSET); - - /*The result of the read is now in np_rdata */ - *data = readl(PCI_CSR_BASE + PCI_NP_RDATA_OFFSET); - - return; -} - -static void non_prefetch_write(unsigned int addr, - unsigned int cmd, unsigned int data) -{ - - writel(addr, PCI_CSR_BASE + PCI_NP_AD_OFFSET); - /*set up the write */ - writel(cmd, PCI_CSR_BASE + PCI_NP_CBE_OFFSET); - /*Execute the write by writing to NP_WDATA */ - writel(data, PCI_CSR_BASE + PCI_NP_WDATA_OFFSET); - - return; -} - -static void crp_write(unsigned int offset, unsigned int data) -{ - /* - * The CRP address register bit 16 indicates that we want to do a - * write - */ - writel(PCI_CRP_WRITE | offset, PCI_CSR_BASE + PCI_CRP_AD_CBE_OFFSET); - writel(data, PCI_CSR_BASE + PCI_CRP_WDATA_OFFSET); -} - -void pci_ixp_init(struct pci_controller *hose) -{ - unsigned int csr; - - /* - * Specify that the AHB bus is operating in big endian mode. Set up - * byte lane swapping between little-endian PCI and the big-endian - * AHB bus - */ -#ifdef __ARMEB__ - csr = PCI_CSR_ABE | PCI_CSR_PDS | PCI_CSR_ADS; -#else - csr = PCI_CSR_ABE; -#endif - writel(csr, PCI_CSR_BASE + PCI_CSR_OFFSET); - - writel(0, PCI_CSR_BASE + PCI_INTEN_OFFSET); - - /* - * We configure the PCI inbound memory windows to be - * 1:1 mapped to SDRAM - */ - crp_write(PCI_CFG_BASE_ADDRESS_0, 0x00000000); - crp_write(PCI_CFG_BASE_ADDRESS_1, 0x01000000); - crp_write(PCI_CFG_BASE_ADDRESS_2, 0x02000000); - crp_write(PCI_CFG_BASE_ADDRESS_3, 0x03000000); - - /* - * Enable CSR window at 64 MiB to allow PCI masters - * to continue prefetching past 64 MiB boundary. - */ - crp_write(PCI_CFG_BASE_ADDRESS_4, 0x04000000); - /* - * Enable the IO window to be way up high, at 0xfffffc00 - */ - crp_write(PCI_CFG_BASE_ADDRESS_5, 0xfffffc01); - - /*Setup PCI-AHB and AHB-PCI address mappings */ - writel(0x00010203, PCI_CSR_BASE + PCI_AHBMEMBASE_OFFSET); - - writel(0x00000000, PCI_CSR_BASE + PCI_AHBIOBASE_OFFSET); - - writel(0x48494a4b, PCI_CSR_BASE + PCI_PCIMEMBASE_OFFSET); - - crp_write(PCI_CFG_SUB_VENDOR_ID, IXP425_PCI_SUB_VENDOR_SYSTEM); - - crp_write(PCI_CFG_COMMAND, PCI_CFG_CMD_MAE | PCI_CFG_CMD_BME); - udelay(1000); - - /* clear error bits in status register */ - writel(PCI_ISR_PSE | PCI_ISR_PFE | PCI_ISR_PPE | PCI_ISR_AHBE, - PCI_CSR_BASE + PCI_ISR_OFFSET); - - /* - * Set Initialize Complete in PCI Control Register: allow IXP4XX to - * respond to PCI configuration cycles. - */ - csr |= PCI_CSR_IC; - writel(csr, PCI_CSR_BASE + PCI_CSR_OFFSET); - - hose->first_busno = 0; - hose->last_busno = 0; - - /* System memory space */ - pci_set_region(hose->regions + 0, - PCI_MEMORY_BUS, - PCI_MEMORY_PHY, PCI_MEMORY_SIZE, PCI_REGION_SYS_MEMORY); - - /* PCI memory space */ - pci_set_region(hose->regions + 1, - PCI_MEM_BUS, - PCI_MEM_PHY, PCI_MEM_SIZE, PCI_REGION_MEM); - /* PCI I/O space */ - pci_set_region(hose->regions + 2, - PCI_IO_BUS, PCI_IO_PHY, PCI_IO_SIZE, PCI_REGION_IO); - - hose->region_count = 3; - - pci_set_ops(hose, - pci_ixp_hose_read_config_byte, - pci_ixp_hose_read_config_word, - pci_ixp_hose_read_config_dword, - pci_ixp_hose_write_config_byte, - pci_ixp_hose_write_config_word, - pci_ixp_hose_write_config_dword); - - pci_register_hose(hose); - hose->last_busno = pci_hose_scan(hose); -} |