diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 588 |
1 files changed, 0 insertions, 588 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c deleted file mode 100644 index d8f9239523..0000000000 --- a/drivers/pci/pci.c +++ /dev/null @@ -1,588 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Andreas Heppel <aheppel@sysgo.de> - * - * (C) Copyright 2002, 2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - */ - -/* - * Old PCI routines - * - * Do not change this file. Instead, convert your board to use CONFIG_DM_PCI - * and change pci-uclass.c. - */ - -#include <common.h> -#include <init.h> -#include <log.h> -#include <asm/global_data.h> -#include <linux/delay.h> - -#include <command.h> -#include <env.h> -#include <errno.h> -#include <asm/processor.h> -#include <asm/io.h> -#include <pci.h> - -DECLARE_GLOBAL_DATA_PTR; - -#define PCI_HOSE_OP(rw, size, type) \ -int pci_hose_##rw##_config_##size(struct pci_controller *hose, \ - pci_dev_t dev, \ - int offset, type value) \ -{ \ - return hose->rw##_##size(hose, dev, offset, value); \ -} - -PCI_HOSE_OP(read, byte, u8 *) -PCI_HOSE_OP(read, word, u16 *) -PCI_HOSE_OP(read, dword, u32 *) -PCI_HOSE_OP(write, byte, u8) -PCI_HOSE_OP(write, word, u16) -PCI_HOSE_OP(write, dword, u32) - -#define PCI_OP(rw, size, type, error_code) \ -int pci_##rw##_config_##size(pci_dev_t dev, int offset, type value) \ -{ \ - struct pci_controller *hose = pci_bus_to_hose(PCI_BUS(dev)); \ - \ - if (!hose) \ - { \ - error_code; \ - return -1; \ - } \ - \ - return pci_hose_##rw##_config_##size(hose, dev, offset, value); \ -} - -PCI_OP(read, byte, u8 *, *value = 0xff) -PCI_OP(read, word, u16 *, *value = 0xffff) -PCI_OP(read, dword, u32 *, *value = 0xffffffff) -PCI_OP(write, byte, u8, ) -PCI_OP(write, word, u16, ) -PCI_OP(write, dword, u32, ) - -#define PCI_READ_VIA_DWORD_OP(size, type, off_mask) \ -int pci_hose_read_config_##size##_via_dword(struct pci_controller *hose,\ - pci_dev_t dev, \ - int offset, type val) \ -{ \ - u32 val32; \ - \ - if (pci_hose_read_config_dword(hose, dev, offset & 0xfc, &val32) < 0) { \ - *val = -1; \ - return -1; \ - } \ - \ - *val = (val32 >> ((offset & (int)off_mask) * 8)); \ - \ - return 0; \ -} - -#define PCI_WRITE_VIA_DWORD_OP(size, type, off_mask, val_mask) \ -int pci_hose_write_config_##size##_via_dword(struct pci_controller *hose,\ - pci_dev_t dev, \ - int offset, type val) \ -{ \ - u32 val32, mask, ldata, shift; \ - \ - if (pci_hose_read_config_dword(hose, dev, offset & 0xfc, &val32) < 0)\ - return -1; \ - \ - shift = ((offset & (int)off_mask) * 8); \ - ldata = (((unsigned long)val) & val_mask) << shift; \ - mask = val_mask << shift; \ - val32 = (val32 & ~mask) | ldata; \ - \ - if (pci_hose_write_config_dword(hose, dev, offset & 0xfc, val32) < 0)\ - return -1; \ - \ - return 0; \ -} - -PCI_READ_VIA_DWORD_OP(byte, u8 *, 0x03) -PCI_READ_VIA_DWORD_OP(word, u16 *, 0x02) -PCI_WRITE_VIA_DWORD_OP(byte, u8, 0x03, 0x000000ff) -PCI_WRITE_VIA_DWORD_OP(word, u16, 0x02, 0x0000ffff) - -/* - * - */ - -static struct pci_controller* hose_head; - -struct pci_controller *pci_get_hose_head(void) -{ - if (gd->hose) - return gd->hose; - - return hose_head; -} - -void pci_register_hose(struct pci_controller* hose) -{ - struct pci_controller **phose = &hose_head; - - while(*phose) - phose = &(*phose)->next; - - hose->next = NULL; - - *phose = hose; -} - -struct pci_controller *pci_bus_to_hose(int bus) -{ - struct pci_controller *hose; - - for (hose = pci_get_hose_head(); hose; hose = hose->next) { - if (bus >= hose->first_busno && bus <= hose->last_busno) - return hose; - } - - printf("pci_bus_to_hose() failed\n"); - return NULL; -} - -struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr) -{ - struct pci_controller *hose; - - for (hose = pci_get_hose_head(); hose; hose = hose->next) { - if (hose->cfg_addr == cfg_addr) - return hose; - } - - return NULL; -} - -int pci_last_busno(void) -{ - struct pci_controller *hose = pci_get_hose_head(); - - if (!hose) - return -1; - - while (hose->next) - hose = hose->next; - - return hose->last_busno; -} - -pci_dev_t pci_find_devices(struct pci_device_id *ids, int index) -{ - struct pci_controller * hose; - pci_dev_t bdf; - int bus; - - for (hose = pci_get_hose_head(); hose; hose = hose->next) { - for (bus = hose->first_busno; bus <= hose->last_busno; bus++) { - bdf = pci_hose_find_devices(hose, bus, ids, &index); - if (bdf != -1) - return bdf; - } - } - - return -1; -} - -static int pci_hose_config_device(struct pci_controller *hose, pci_dev_t dev, - ulong io, pci_addr_t mem, ulong command) -{ - u32 bar_response; - unsigned int old_command; - pci_addr_t bar_value; - pci_size_t bar_size; - unsigned char pin; - int bar, found_mem64; - - debug("PCI Config: I/O=0x%lx, Memory=0x%llx, Command=0x%lx\n", io, - (u64)mem, command); - - pci_hose_write_config_dword(hose, dev, PCI_COMMAND, 0); - - for (bar = PCI_BASE_ADDRESS_0; bar <= PCI_BASE_ADDRESS_5; bar += 4) { - pci_hose_write_config_dword(hose, dev, bar, 0xffffffff); - pci_hose_read_config_dword(hose, dev, bar, &bar_response); - - if (!bar_response) - continue; - - found_mem64 = 0; - - /* Check the BAR type and set our address mask */ - if (bar_response & PCI_BASE_ADDRESS_SPACE) { - bar_size = ~(bar_response & PCI_BASE_ADDRESS_IO_MASK) + 1; - /* round up region base address to a multiple of size */ - io = ((io - 1) | (bar_size - 1)) + 1; - bar_value = io; - /* compute new region base address */ - io = io + bar_size; - } else { - if ((bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) == - PCI_BASE_ADDRESS_MEM_TYPE_64) { - u32 bar_response_upper; - u64 bar64; - pci_hose_write_config_dword(hose, dev, bar + 4, - 0xffffffff); - pci_hose_read_config_dword(hose, dev, bar + 4, - &bar_response_upper); - - bar64 = ((u64)bar_response_upper << 32) | bar_response; - - bar_size = ~(bar64 & PCI_BASE_ADDRESS_MEM_MASK) + 1; - found_mem64 = 1; - } else { - bar_size = (u32)(~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1); - } - - /* round up region base address to multiple of size */ - mem = ((mem - 1) | (bar_size - 1)) + 1; - bar_value = mem; - /* compute new region base address */ - mem = mem + bar_size; - } - - /* Write it out and update our limit */ - pci_hose_write_config_dword (hose, dev, bar, (u32)bar_value); - - if (found_mem64) { - bar += 4; -#ifdef CONFIG_SYS_PCI_64BIT - pci_hose_write_config_dword(hose, dev, bar, - (u32)(bar_value >> 32)); -#else - pci_hose_write_config_dword(hose, dev, bar, 0x00000000); -#endif - } - } - - /* Configure Cache Line Size Register */ - pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08); - - /* Configure Latency Timer */ - pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80); - - /* Disable interrupt line, if device says it wants to use interrupts */ - pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin); - if (pin != 0) { - pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, - PCI_INTERRUPT_LINE_DISABLE); - } - - pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &old_command); - pci_hose_write_config_dword(hose, dev, PCI_COMMAND, - (old_command & 0xffff0000) | command); - - return 0; -} - -/* - * - */ - -struct pci_config_table *pci_find_config(struct pci_controller *hose, - unsigned short class, - unsigned int vendor, - unsigned int device, - unsigned int bus, - unsigned int dev, - unsigned int func) -{ - struct pci_config_table *table; - - for (table = hose->config_table; table && table->vendor; table++) { - if ((table->vendor == PCI_ANY_ID || table->vendor == vendor) && - (table->device == PCI_ANY_ID || table->device == device) && - (table->class == PCI_ANY_ID || table->class == class) && - (table->bus == PCI_ANY_ID || table->bus == bus) && - (table->dev == PCI_ANY_ID || table->dev == dev) && - (table->func == PCI_ANY_ID || table->func == func)) { - return table; - } - } - - return NULL; -} - -void pci_cfgfunc_config_device(struct pci_controller *hose, - pci_dev_t dev, - struct pci_config_table *entry) -{ - pci_hose_config_device(hose, dev, entry->priv[0], entry->priv[1], - entry->priv[2]); -} - -void pci_cfgfunc_do_nothing(struct pci_controller *hose, - pci_dev_t dev, struct pci_config_table *entry) -{ -} - -/* - * HJF: Changed this to return int. I think this is required - * to get the correct result when scanning bridges - */ -extern int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev); - -#ifdef CONFIG_PCI_SCAN_SHOW -__weak int pci_print_dev(struct pci_controller *hose, pci_dev_t dev) -{ - if (dev == PCI_BDF(hose->first_busno, 0, 0)) - return 0; - - return 1; -} -#endif /* CONFIG_PCI_SCAN_SHOW */ - -int pci_hose_scan_bus(struct pci_controller *hose, int bus) -{ - unsigned int sub_bus, found_multi = 0; - unsigned short vendor, device, class; - unsigned char header_type; -#ifndef CONFIG_PCI_PNP - struct pci_config_table *cfg; -#endif - pci_dev_t dev; -#ifdef CONFIG_PCI_SCAN_SHOW - static int indent = 0; -#endif - - sub_bus = bus; - - for (dev = PCI_BDF(bus,0,0); - dev < PCI_BDF(bus, PCI_MAX_PCI_DEVICES - 1, - PCI_MAX_PCI_FUNCTIONS - 1); - dev += PCI_BDF(0, 0, 1)) { - - if (pci_skip_dev(hose, dev)) - continue; - - if (PCI_FUNC(dev) && !found_multi) - continue; - - pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type); - - pci_hose_read_config_word(hose, dev, PCI_VENDOR_ID, &vendor); - - if (vendor == 0xffff || vendor == 0x0000) - continue; - - if (!PCI_FUNC(dev)) - found_multi = header_type & 0x80; - - debug("PCI Scan: Found Bus %d, Device %d, Function %d\n", - PCI_BUS(dev), PCI_DEV(dev), PCI_FUNC(dev)); - - pci_hose_read_config_word(hose, dev, PCI_DEVICE_ID, &device); - pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class); - -#ifdef CONFIG_PCI_FIXUP_DEV - board_pci_fixup_dev(hose, dev, vendor, device, class); -#endif - -#ifdef CONFIG_PCI_SCAN_SHOW - indent++; - - /* Print leading space, including bus indentation */ - printf("%*c", indent + 1, ' '); - - if (pci_print_dev(hose, dev)) { - printf("%02x:%02x.%-*x - %04x:%04x - %s\n", - PCI_BUS(dev), PCI_DEV(dev), 6 - indent, PCI_FUNC(dev), - vendor, device, pci_class_str(class >> 8)); - } -#endif - -#ifdef CONFIG_PCI_PNP - sub_bus = max((unsigned int)pciauto_config_device(hose, dev), - sub_bus); -#else - cfg = pci_find_config(hose, class, vendor, device, - PCI_BUS(dev), PCI_DEV(dev), PCI_FUNC(dev)); - if (cfg) { - cfg->config_device(hose, dev, cfg); - sub_bus = max(sub_bus, - (unsigned int)hose->current_busno); - } -#endif - -#ifdef CONFIG_PCI_SCAN_SHOW - indent--; -#endif - - if (hose->fixup_irq) - hose->fixup_irq(hose, dev); - } - - return sub_bus; -} - -int pci_hose_scan(struct pci_controller *hose) -{ -#if defined(CONFIG_PCI_BOOTDELAY) - char *s; - int i; - - if (!gd->pcidelay_done) { - /* wait "pcidelay" ms (if defined)... */ - s = env_get("pcidelay"); - if (s) { - int val = simple_strtoul(s, NULL, 10); - for (i = 0; i < val; i++) - udelay(1000); - } - gd->pcidelay_done = 1; - } -#endif /* CONFIG_PCI_BOOTDELAY */ - -#ifdef CONFIG_PCI_SCAN_SHOW - puts("PCI:\n"); -#endif - - /* - * Start scan at current_busno. - * PCIe will start scan at first_busno+1. - */ - /* For legacy support, ensure current >= first */ - if (hose->first_busno > hose->current_busno) - hose->current_busno = hose->first_busno; -#ifdef CONFIG_PCI_PNP - pciauto_config_init(hose); -#endif - return pci_hose_scan_bus(hose, hose->current_busno); -} - -int pci_init(void) -{ - hose_head = NULL; - - /* allow env to disable pci init/enum */ - if (env_get("pcidisable") != NULL) - return 0; - - /* now call board specific pci_init()... */ - pci_init_board(); - - return 0; -} - -/* Returns the address of the requested capability structure within the - * device's PCI configuration space or 0 in case the device does not - * support it. - * */ -int pci_hose_find_capability(struct pci_controller *hose, pci_dev_t dev, - int cap) -{ - int pos; - u8 hdr_type; - - pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &hdr_type); - - pos = pci_hose_find_cap_start(hose, dev, hdr_type & 0x7F); - - if (pos) - pos = pci_find_cap(hose, dev, pos, cap); - - return pos; -} - -/* Find the header pointer to the Capabilities*/ -int pci_hose_find_cap_start(struct pci_controller *hose, pci_dev_t dev, - u8 hdr_type) -{ - u16 status; - - pci_hose_read_config_word(hose, dev, PCI_STATUS, &status); - - if (!(status & PCI_STATUS_CAP_LIST)) - return 0; - - switch (hdr_type) { - case PCI_HEADER_TYPE_NORMAL: - case PCI_HEADER_TYPE_BRIDGE: - return PCI_CAPABILITY_LIST; - case PCI_HEADER_TYPE_CARDBUS: - return PCI_CB_CAPABILITY_LIST; - default: - return 0; - } -} - -int pci_find_cap(struct pci_controller *hose, pci_dev_t dev, int pos, int cap) -{ - int ttl = PCI_FIND_CAP_TTL; - u8 id; - u8 next_pos; - - while (ttl--) { - pci_hose_read_config_byte(hose, dev, pos, &next_pos); - if (next_pos < CAP_START_POS) - break; - next_pos &= ~3; - pos = (int) next_pos; - pci_hose_read_config_byte(hose, dev, - pos + PCI_CAP_LIST_ID, &id); - if (id == 0xff) - break; - if (id == cap) - return pos; - pos += PCI_CAP_LIST_NEXT; - } - return 0; -} - -/** - * pci_find_next_ext_capability - Find an extended capability - * - * Returns the address of the next matching extended capability structure - * within the device's PCI configuration space or 0 if the device does - * not support it. Some capabilities can occur several times, e.g., the - * vendor-specific capability, and this provides a way to find them all. - */ -int pci_find_next_ext_capability(struct pci_controller *hose, pci_dev_t dev, - int start, int cap) -{ - u32 header; - int ttl, pos = PCI_CFG_SPACE_SIZE; - - /* minimum 8 bytes per capability */ - ttl = (PCI_CFG_SPACE_EXP_SIZE - PCI_CFG_SPACE_SIZE) / 8; - - if (start) - pos = start; - - pci_hose_read_config_dword(hose, dev, pos, &header); - if (header == 0xffffffff || header == 0) - return 0; - - while (ttl-- > 0) { - if (PCI_EXT_CAP_ID(header) == cap && pos != start) - return pos; - - pos = PCI_EXT_CAP_NEXT(header); - if (pos < PCI_CFG_SPACE_SIZE) - break; - - pci_hose_read_config_dword(hose, dev, pos, &header); - if (header == 0xffffffff || header == 0) - break; - } - - return 0; -} - -/** - * pci_hose_find_ext_capability - Find an extended capability - * - * Returns the address of the requested extended capability structure - * within the device's PCI configuration space or 0 if the device does - * not support it. - */ -int pci_hose_find_ext_capability(struct pci_controller *hose, pci_dev_t dev, - int cap) -{ - return pci_find_next_ext_capability(hose, dev, 0, cap); -} |