diff options
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/pci.c | 122 | ||||
-rw-r--r-- | drivers/pci/pci_auto.c | 104 |
2 files changed, 132 insertions, 94 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 398542b..d864f13 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -151,13 +151,14 @@ void pci_register_hose(struct pci_controller* hose) *phose = hose; } -struct pci_controller *pci_bus_to_hose (int bus) +struct pci_controller *pci_bus_to_hose(int bus) { struct pci_controller *hose; - for (hose = hose_head; hose; hose = hose->next) + for (hose = 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; @@ -196,21 +197,20 @@ pci_dev_t pci_find_devices(struct pci_device_id *ids, int index) pci_dev_t bdf; int i, bus, found_multi = 0; - for (hose = hose_head; hose; hose = hose->next) - { + for (hose = hose_head; hose; hose = hose->next) { #ifdef CONFIG_SYS_SCSI_SCAN_BUS_REVERSE for (bus = hose->last_busno; bus >= hose->first_busno; bus--) #else for (bus = hose->first_busno; bus <= hose->last_busno; bus++) #endif - for (bdf = PCI_BDF(bus,0,0); + for (bdf = PCI_BDF(bus, 0, 0); #if defined(CONFIG_ELPPC) || defined(CONFIG_PPMC7XX) - bdf < PCI_BDF(bus,PCI_MAX_PCI_DEVICES-1,PCI_MAX_PCI_FUNCTIONS-1); + bdf < PCI_BDF(bus, PCI_MAX_PCI_DEVICES - 1, + PCI_MAX_PCI_FUNCTIONS - 1); #else - bdf < PCI_BDF(bus+1,0,0); + bdf < PCI_BDF(bus + 1, 0, 0); #endif - bdf += PCI_BDF(0,0,1)) - { + bdf += PCI_BDF(0, 0, 1)) { if (!PCI_FUNC(bdf)) { pci_read_config_byte(bdf, PCI_HEADER_TYPE, @@ -229,19 +229,19 @@ pci_dev_t pci_find_devices(struct pci_device_id *ids, int index) PCI_DEVICE_ID, &device); - for (i=0; ids[i].vendor != 0; i++) + for (i = 0; ids[i].vendor != 0; i++) { if (vendor == ids[i].vendor && - device == ids[i].device) - { + device == ids[i].device) { if (index <= 0) return bdf; index--; } + } } } - return (-1); + return -1; } pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index) @@ -258,7 +258,7 @@ pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index) * */ -int __pci_hose_phys_to_bus (struct pci_controller *hose, +int __pci_hose_phys_to_bus(struct pci_controller *hose, phys_addr_t phys_addr, unsigned long flags, unsigned long skip_mask, @@ -297,12 +297,14 @@ pci_addr_t pci_hose_phys_to_bus (struct pci_controller *hose, int ret; if (!hose) { - puts ("pci_hose_phys_to_bus: invalid hose\n"); + puts("pci_hose_phys_to_bus: invalid hose\n"); return bus_addr; } - /* if PCI_REGION_MEM is set we do a two pass search with preference - * on matches that don't have PCI_REGION_SYS_MEMORY set */ + /* + * if PCI_REGION_MEM is set we do a two pass search with preference + * on matches that don't have PCI_REGION_SYS_MEMORY set + */ if ((flags & PCI_REGION_MEM) == PCI_REGION_MEM) { ret = __pci_hose_phys_to_bus(hose, phys_addr, flags, PCI_REGION_SYS_MEMORY, &bus_addr); @@ -313,12 +315,12 @@ pci_addr_t pci_hose_phys_to_bus (struct pci_controller *hose, ret = __pci_hose_phys_to_bus(hose, phys_addr, flags, 0, &bus_addr); if (ret) - puts ("pci_hose_phys_to_bus: invalid physical address\n"); + puts("pci_hose_phys_to_bus: invalid physical address\n"); return bus_addr; } -int __pci_hose_bus_to_phys (struct pci_controller *hose, +int __pci_hose_bus_to_phys(struct pci_controller *hose, pci_addr_t bus_addr, unsigned long flags, unsigned long skip_mask, @@ -354,12 +356,14 @@ phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose, int ret; if (!hose) { - puts ("pci_hose_bus_to_phys: invalid hose\n"); + puts("pci_hose_bus_to_phys: invalid hose\n"); return phys_addr; } - /* if PCI_REGION_MEM is set we do a two pass search with preference - * on matches that don't have PCI_REGION_SYS_MEMORY set */ + /* + * if PCI_REGION_MEM is set we do a two pass search with preference + * on matches that don't have PCI_REGION_SYS_MEMORY set + */ if ((flags & PCI_REGION_MEM) == PCI_REGION_MEM) { ret = __pci_hose_bus_to_phys(hose, bus_addr, flags, PCI_REGION_SYS_MEMORY, &phys_addr); @@ -370,7 +374,7 @@ phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose, ret = __pci_hose_bus_to_phys(hose, bus_addr, flags, 0, &phys_addr); if (ret) - puts ("pci_hose_bus_to_phys: invalid physical address\n"); + puts("pci_hose_bus_to_phys: invalid physical address\n"); return phys_addr; } @@ -385,20 +389,21 @@ int pci_hose_config_device(struct pci_controller *hose, pci_addr_t mem, unsigned long command) { - unsigned int bar_response, old_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); + 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); + 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); + pci_hose_write_config_dword(hose, dev, bar, 0xffffffff); + pci_hose_read_config_dword(hose, dev, bar, &bar_response); if (!bar_response) continue; @@ -418,8 +423,10 @@ int pci_hose_config_device(struct pci_controller *hose, 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); + 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; @@ -442,27 +449,28 @@ int pci_hose_config_device(struct pci_controller *hose, if (found_mem64) { bar += 4; #ifdef CONFIG_SYS_PCI_64BIT - pci_hose_write_config_dword(hose, dev, bar, (u32)(bar_value>>32)); + pci_hose_write_config_dword(hose, dev, bar, + (u32)(bar_value >> 32)); #else - pci_hose_write_config_dword (hose, dev, bar, 0x00000000); + 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); + 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); + 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); + pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin); if (pin != 0) { - pci_hose_write_config_byte (hose, dev, PCI_INTERRUPT_LINE, 0xff); + pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, 0xff); } - pci_hose_read_config_dword (hose, dev, PCI_COMMAND, &old_command); - pci_hose_write_config_dword (hose, dev, PCI_COMMAND, + 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; @@ -500,7 +508,8 @@ 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]); + pci_hose_config_device(hose, dev, entry->priv[0], entry->priv[1], + entry->priv[2]); } void pci_cfgfunc_do_nothing(struct pci_controller *hose, @@ -509,10 +518,7 @@ void pci_cfgfunc_do_nothing(struct pci_controller *hose, } /* - * - */ - -/* HJF: Changed this to return int. I think this is required + * 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); @@ -618,10 +624,12 @@ int pci_print_dev(struct pci_controller *hose, pci_dev_t dev) int pci_hose_scan_bus(struct pci_controller *hose, int bus) { - unsigned int sub_bus, found_multi=0; + 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; @@ -630,8 +638,9 @@ int pci_hose_scan_bus(struct pci_controller *hose, int bus) 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)) { + 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; @@ -649,8 +658,8 @@ int pci_hose_scan_bus(struct pci_controller *hose, int bus) 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) ); + 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); @@ -668,18 +677,16 @@ int pci_hose_scan_bus(struct pci_controller *hose, int bus) } #endif +#ifdef CONFIG_PCI_PNP + sub_bus = max(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, hose->current_busno); -#ifdef CONFIG_PCI_PNP - } else { - int n = pciauto_config_device(hose, dev); - - sub_bus = max(sub_bus, n); -#endif } +#endif #ifdef CONFIG_PCI_SCAN_SHOW indent--; @@ -711,10 +718,11 @@ int pci_hose_scan(struct pci_controller *hose) } #endif /* CONFIG_PCI_BOOTDELAY */ - /* Start scan at current_busno. + /* + * Start scan at current_busno. * PCIe will start scan at first_busno+1. */ - /* For legacy support, ensure current>=first */ + /* For legacy support, ensure current >= first */ if (hose->first_busno > hose->current_busno) hose->current_busno = hose->first_busno; #ifdef CONFIG_PCI_PNP diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c index 87ee2c2..cd78030 100644 --- a/drivers/pci/pci_auto.c +++ b/drivers/pci/pci_auto.c @@ -35,7 +35,7 @@ * */ -void pciauto_region_init(struct pci_region* res) +void pciauto_region_init(struct pci_region *res) { /* * Avoid allocating PCI resources from address 0 -- this is illegal @@ -50,7 +50,8 @@ void pciauto_region_align(struct pci_region *res, pci_size_t size) res->bus_lower = ((res->bus_lower - 1) | (size - 1)) + 1; } -int pciauto_region_allocate(struct pci_region* res, pci_size_t size, pci_addr_t *bar) +int pciauto_region_allocate(struct pci_region *res, pci_size_t size, + pci_addr_t *bar) { pci_addr_t addr; @@ -88,58 +89,77 @@ void pciauto_setup_device(struct pci_controller *hose, struct pci_region *prefetch, struct pci_region *io) { - unsigned int bar_response; - pci_addr_t bar_value; + u32 bar_response; pci_size_t bar_size; - unsigned int cmdstat = 0; - struct pci_region *bar_res; + u16 cmdstat = 0; int bar, bar_nr = 0; +#ifndef CONFIG_PCI_ENUM_ONLY + pci_addr_t bar_value; + struct pci_region *bar_res; int found_mem64 = 0; +#endif - pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat); + pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat); cmdstat = (cmdstat & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) | PCI_COMMAND_MASTER; - for (bar = PCI_BASE_ADDRESS_0; bar < PCI_BASE_ADDRESS_0 + (bars_num*4); bar += 4) { + for (bar = PCI_BASE_ADDRESS_0; + bar < PCI_BASE_ADDRESS_0 + (bars_num * 4); bar += 4) { /* Tickle the BAR and get the response */ +#ifndef CONFIG_PCI_ENUM_ONLY pci_hose_write_config_dword(hose, dev, bar, 0xffffffff); +#endif pci_hose_read_config_dword(hose, dev, bar, &bar_response); /* If BAR is not implemented go to the next BAR */ if (!bar_response) continue; +#ifndef CONFIG_PCI_ENUM_ONLY found_mem64 = 0; +#endif /* 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)) & 0xffff) + 1; +#ifndef CONFIG_PCI_ENUM_ONLY bar_res = io; +#endif DEBUGF("PCI Autoconfig: BAR %d, I/O, size=0x%llx, ", bar_nr, (u64)bar_size); } else { - if ( (bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) == + 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); + +#ifndef CONFIG_PCI_ENUM_ONLY + pci_hose_write_config_dword(hose, dev, bar + 4, + 0xffffffff); +#endif + 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; +#ifndef CONFIG_PCI_ENUM_ONLY found_mem64 = 1; +#endif } else { bar_size = (u32)(~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1); } +#ifndef CONFIG_PCI_ENUM_ONLY if (prefetch && (bar_response & PCI_BASE_ADDRESS_MEM_PREFETCH)) bar_res = prefetch; else bar_res = mem; +#endif DEBUGF("PCI Autoconfig: BAR %d, Mem, size=0x%llx, ", bar_nr, (u64)bar_size); } +#ifndef CONFIG_PCI_ENUM_ONLY if (pciauto_region_allocate(bar_res, bar_size, &bar_value) == 0) { /* Write it out and update our limit */ pci_hose_write_config_dword(hose, dev, bar, (u32)bar_value); @@ -158,16 +178,17 @@ void pciauto_setup_device(struct pci_controller *hose, #endif } - cmdstat |= (bar_response & PCI_BASE_ADDRESS_SPACE) ? - PCI_COMMAND_IO : PCI_COMMAND_MEMORY; } +#endif + cmdstat |= (bar_response & PCI_BASE_ADDRESS_SPACE) ? + PCI_COMMAND_IO : PCI_COMMAND_MEMORY; DEBUGF("\n"); bar_nr++; } - pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat); + pci_hose_write_config_word(hose, dev, PCI_COMMAND, cmdstat); pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, CONFIG_SYS_PCI_CACHE_LINE_SIZE); pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80); @@ -179,9 +200,9 @@ void pciauto_prescan_setup_bridge(struct pci_controller *hose, struct pci_region *pci_mem = hose->pci_mem; struct pci_region *pci_prefetch = hose->pci_prefetch; struct pci_region *pci_io = hose->pci_io; - unsigned int cmdstat; + u16 cmdstat; - pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat); + pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat); /* Configure bus number registers */ pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, @@ -229,7 +250,8 @@ void pciauto_prescan_setup_bridge(struct pci_controller *hose, } /* Enable memory and I/O accesses, enable bus master */ - pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat | PCI_COMMAND_MASTER); + pci_hose_write_config_word(hose, dev, PCI_COMMAND, + cmdstat | PCI_COMMAND_MASTER); } void pciauto_postscan_setup_bridge(struct pci_controller *hose, @@ -248,7 +270,7 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose, pciauto_region_align(pci_mem, 0x100000); pci_hose_write_config_word(hose, dev, PCI_MEMORY_LIMIT, - (pci_mem->bus_lower-1) >> 16); + (pci_mem->bus_lower - 1) >> 16); } if (pci_prefetch) { @@ -256,7 +278,7 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose, pciauto_region_align(pci_prefetch, 0x100000); pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, - (pci_prefetch->bus_lower-1) >> 16); + (pci_prefetch->bus_lower - 1) >> 16); } if (pci_io) { @@ -264,9 +286,9 @@ void pciauto_postscan_setup_bridge(struct pci_controller *hose, pciauto_region_align(pci_io, 0x1000); pci_hose_write_config_byte(hose, dev, PCI_IO_LIMIT, - ((pci_io->bus_lower-1) & 0x0000f000) >> 8); + ((pci_io->bus_lower - 1) & 0x0000f000) >> 8); pci_hose_write_config_word(hose, dev, PCI_IO_LIMIT_UPPER16, - ((pci_io->bus_lower-1) & 0xffff0000) >> 16); + ((pci_io->bus_lower - 1) & 0xffff0000) >> 16); } } @@ -280,7 +302,7 @@ void pciauto_config_init(struct pci_controller *hose) hose->pci_io = hose->pci_mem = NULL; - for (i=0; i<hose->region_count; i++) { + for (i = 0; i < hose->region_count; i++) { switch(hose->regions[i].flags) { case PCI_REGION_IO: if (!hose->pci_io || @@ -338,7 +360,8 @@ void pciauto_config_init(struct pci_controller *hose) } } -/* HJF: Changed this to return int. I think this is required +/* + * HJF: Changed this to return int. I think this is required * to get the correct result when scanning bridges */ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev) @@ -350,16 +373,11 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev) pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class); - switch(class) { - case PCI_CLASS_PROCESSOR_POWERPC: /* an agent or end-point */ - DEBUGF("PCI AutoConfig: Found PowerPC device\n"); - pciauto_setup_device(hose, dev, 6, hose->pci_mem, - hose->pci_prefetch, hose->pci_io); - break; - + switch (class) { case PCI_CLASS_BRIDGE_PCI: hose->current_busno++; - pciauto_setup_device(hose, dev, 2, hose->pci_mem, hose->pci_prefetch, hose->pci_io); + pciauto_setup_device(hose, dev, 2, hose->pci_mem, + hose->pci_prefetch, hose->pci_io); DEBUGF("PCI Autoconfig: Found P2P bridge, device %d\n", PCI_DEV(dev)); @@ -385,14 +403,20 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev) return sub_bus; } - pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io); + pciauto_setup_device(hose, dev, 6, hose->pci_mem, + hose->pci_prefetch, hose->pci_io); break; case PCI_CLASS_BRIDGE_CARDBUS: - /* just do a minimal setup of the bridge, let the OS take care of the rest */ - pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_prefetch, hose->pci_io); + /* + * just do a minimal setup of the bridge, + * let the OS take care of the rest + */ + pciauto_setup_device(hose, dev, 0, hose->pci_mem, + hose->pci_prefetch, hose->pci_io); - DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n", PCI_DEV(dev)); + DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n", + PCI_DEV(dev)); hose->current_busno++; break; @@ -412,11 +436,17 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev) * the PIMMR window to be allocated (BAR0 - 1MB size) */ DEBUGF("PCI Autoconfig: Broken bridge found, only minimal config\n"); - pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_prefetch, hose->pci_io); + pciauto_setup_device(hose, dev, 0, hose->pci_mem, + hose->pci_prefetch, hose->pci_io); break; #endif + + case PCI_CLASS_PROCESSOR_POWERPC: /* an agent or end-point */ + DEBUGF("PCI AutoConfig: Found PowerPC device\n"); + default: - pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io); + pciauto_setup_device(hose, dev, 6, hose->pci_mem, + hose->pci_prefetch, hose->pci_io); break; } |