X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fpci%2Fpci_auto.c;h=7ff282b48cb07c8a8bf9d7b7937fe3c5527d4590;hb=da4b159bf021fcb464235232defb423d0d81aaa6;hp=87ee2c2408b481291e0970175f23c72874612f7b;hpb=a77034a8dfc7942ca08483138dccdebeacc36826;p=oweals%2Fu-boot.git diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c index 87ee2c2408..7ff282b48c 100644 --- a/drivers/pci/pci_auto.c +++ b/drivers/pci/pci_auto.c @@ -7,25 +7,13 @@ * * Copyright 2000 MontaVista Software Inc. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. + * SPDX-License-Identifier: GPL-2.0+ */ #include - +#include #include -#undef DEBUG -#ifdef DEBUG -#define DEBUGF(x...) printf(x) -#else -#define DEBUGF(x...) -#endif /* DEBUG */ - -#define PCIAUTO_IDE_MODE_MASK 0x05 - /* the user can define CONFIG_SYS_PCI_CACHE_LINE_SIZE to avoid problems */ #ifndef CONFIG_SYS_PCI_CACHE_LINE_SIZE #define CONFIG_SYS_PCI_CACHE_LINE_SIZE 8 @@ -35,7 +23,7 @@ * */ -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 @@ -50,25 +38,27 @@ 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; if (!res) { - DEBUGF("No resource"); + debug("No resource"); goto error; } addr = ((res->bus_lower - 1) | (size - 1)) + 1; if (addr - res->bus_start + size > res->size) { - DEBUGF("No room in resource"); + debug("No room in resource"); goto error; } res->bus_lower = addr + size; - DEBUGF("address=0x%llx bus_lower=0x%llx", (u64)addr, (u64)res->bus_lower); + debug("address=0x%llx bus_lower=0x%llx", (unsigned long long)addr, + (unsigned long long)res->bus_lower); *bar = addr; return 0; @@ -88,58 +78,81 @@ 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; + u8 header_type; + int rom_addr; +#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); + debug("PCI Autoconfig: BAR %d, I/O, size=0x%llx, ", + bar_nr, (unsigned long long)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); + debug("PCI Autoconfig: BAR %d, Mem, size=0x%llx, ", + bar_nr, (unsigned long long)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 +171,38 @@ 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"); + debug("\n"); bar_nr++; } - pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat); + /* Configure the expansion ROM address */ + pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type); + if (header_type != PCI_HEADER_TYPE_CARDBUS) { + rom_addr = (header_type == PCI_HEADER_TYPE_NORMAL) ? + PCI_ROM_ADDRESS : PCI_ROM_ADDRESS1; + pci_hose_write_config_dword(hose, dev, rom_addr, 0xfffffffe); + pci_hose_read_config_dword(hose, dev, rom_addr, &bar_response); + if (bar_response) { + bar_size = -(bar_response & ~1); + debug("PCI Autoconfig: ROM, size=%#x, ", + (unsigned int)bar_size); + if (pciauto_region_allocate(mem, bar_size, + &bar_value) == 0) { + pci_hose_write_config_dword(hose, dev, rom_addr, + bar_value); + } + cmdstat |= PCI_COMMAND_MEMORY; + debug("\n"); + } + } + + 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); @@ -176,18 +211,39 @@ void pciauto_setup_device(struct pci_controller *hose, void pciauto_prescan_setup_bridge(struct pci_controller *hose, pci_dev_t dev, int sub_bus) { - 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; + struct pci_region *pci_mem; + struct pci_region *pci_prefetch; + struct pci_region *pci_io; + u16 cmdstat, prefechable_64; + +#ifdef CONFIG_DM_PCI + /* The root controller has the region information */ + struct pci_controller *ctlr_hose = pci_bus_to_hose(0); + + pci_mem = ctlr_hose->pci_mem; + pci_prefetch = ctlr_hose->pci_prefetch; + pci_io = ctlr_hose->pci_io; +#else + pci_mem = hose->pci_mem; + pci_prefetch = hose->pci_prefetch; + pci_io = hose->pci_io; +#endif - pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat); + pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat); + pci_hose_read_config_word(hose, dev, PCI_PREF_MEMORY_BASE, + &prefechable_64); + prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK; /* Configure bus number registers */ +#ifdef CONFIG_DM_PCI + pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, PCI_BUS(dev)); + pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS, sub_bus); +#else pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, PCI_BUS(dev) - hose->first_busno); pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS, sub_bus - hose->first_busno); +#endif pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, 0xff); if (pci_mem) { @@ -208,12 +264,26 @@ void pciauto_prescan_setup_bridge(struct pci_controller *hose, /* Set up memory and I/O filter limits, assume 32-bit I/O space */ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, (pci_prefetch->bus_lower & 0xfff00000) >> 16); + if (prefechable_64 == PCI_PREF_RANGE_TYPE_64) +#ifdef CONFIG_SYS_PCI_64BIT + pci_hose_write_config_dword(hose, dev, + PCI_PREF_BASE_UPPER32, + pci_prefetch->bus_lower >> 32); +#else + pci_hose_write_config_dword(hose, dev, + PCI_PREF_BASE_UPPER32, + 0x0); +#endif cmdstat |= PCI_COMMAND_MEMORY; } else { /* We don't support prefetchable memory for now, so disable */ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000); pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x0); + if (prefechable_64 == PCI_PREF_RANGE_TYPE_64) { + pci_hose_write_config_word(hose, dev, PCI_PREF_BASE_UPPER32, 0x0); + pci_hose_write_config_word(hose, dev, PCI_PREF_LIMIT_UPPER32, 0x0); + } } if (pci_io) { @@ -229,34 +299,69 @@ 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, pci_dev_t dev, int sub_bus) { - struct pci_region *pci_mem = hose->pci_mem; - struct pci_region *pci_prefetch = hose->pci_prefetch; - struct pci_region *pci_io = hose->pci_io; + struct pci_region *pci_mem; + struct pci_region *pci_prefetch; + struct pci_region *pci_io; + +#ifdef CONFIG_DM_PCI + /* The root controller has the region information */ + struct pci_controller *ctlr_hose = pci_bus_to_hose(0); + + pci_mem = ctlr_hose->pci_mem; + pci_prefetch = ctlr_hose->pci_prefetch; + pci_io = ctlr_hose->pci_io; +#else + pci_mem = hose->pci_mem; + pci_prefetch = hose->pci_prefetch; + pci_io = hose->pci_io; +#endif /* Configure bus number registers */ +#ifdef CONFIG_DM_PCI + pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, sub_bus); +#else pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, sub_bus - hose->first_busno); +#endif if (pci_mem) { /* Round memory allocator to 1MB boundary */ 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) { + u16 prefechable_64; + + pci_hose_read_config_word(hose, dev, + PCI_PREF_MEMORY_LIMIT, + &prefechable_64); + prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK; + /* Round memory allocator to 1MB boundary */ 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 (prefechable_64 == PCI_PREF_RANGE_TYPE_64) +#ifdef CONFIG_SYS_PCI_64BIT + pci_hose_write_config_dword(hose, dev, + PCI_PREF_LIMIT_UPPER32, + (pci_prefetch->bus_lower - 1) >> 32); +#else + pci_hose_write_config_dword(hose, dev, + PCI_PREF_LIMIT_UPPER32, + 0x0); +#endif } if (pci_io) { @@ -264,9 +369,9 @@ 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); } } @@ -278,9 +383,9 @@ void pciauto_config_init(struct pci_controller *hose) { int i; - hose->pci_io = hose->pci_mem = NULL; + hose->pci_io = hose->pci_mem = hose->pci_prefetch = NULL; - for (i=0; iregion_count; i++) { + for (i = 0; i < hose->region_count; i++) { switch(hose->regions[i].flags) { case PCI_REGION_IO: if (!hose->pci_io || @@ -304,7 +409,7 @@ void pciauto_config_init(struct pci_controller *hose) if (hose->pci_mem) { pciauto_region_init(hose->pci_mem); - DEBUGF("PCI Autoconfig: Bus Memory region: [0x%llx-0x%llx],\n" + debug("PCI Autoconfig: Bus Memory region: [0x%llx-0x%llx],\n" "\t\tPhysical Memory [%llx-%llxx]\n", (u64)hose->pci_mem->bus_start, (u64)(hose->pci_mem->bus_start + hose->pci_mem->size - 1), @@ -315,7 +420,7 @@ void pciauto_config_init(struct pci_controller *hose) if (hose->pci_prefetch) { pciauto_region_init(hose->pci_prefetch); - DEBUGF("PCI Autoconfig: Bus Prefetchable Mem: [0x%llx-0x%llx],\n" + debug("PCI Autoconfig: Bus Prefetchable Mem: [0x%llx-0x%llx],\n" "\t\tPhysical Memory [%llx-%llx]\n", (u64)hose->pci_prefetch->bus_start, (u64)(hose->pci_prefetch->bus_start + @@ -328,7 +433,7 @@ void pciauto_config_init(struct pci_controller *hose) if (hose->pci_io) { pciauto_region_init(hose->pci_io); - DEBUGF("PCI Autoconfig: Bus I/O region: [0x%llx-0x%llx],\n" + debug("PCI Autoconfig: Bus I/O region: [0x%llx-0x%llx],\n" "\t\tPhysical Memory: [%llx-%llx]\n", (u64)hose->pci_io->bus_start, (u64)(hose->pci_io->bus_start + hose->pci_io->size - 1), @@ -338,32 +443,50 @@ 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) { + struct pci_region *pci_mem; + struct pci_region *pci_prefetch; + struct pci_region *pci_io; unsigned int sub_bus = PCI_BUS(dev); unsigned short class; - unsigned char prg_iface; int n; - pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class); +#ifdef CONFIG_DM_PCI + /* The root controller has the region information */ + struct pci_controller *ctlr_hose = pci_bus_to_hose(0); - 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; + pci_mem = ctlr_hose->pci_mem; + pci_prefetch = ctlr_hose->pci_prefetch; + pci_io = ctlr_hose->pci_io; +#else + pci_mem = hose->pci_mem; + pci_prefetch = hose->pci_prefetch; + pci_io = hose->pci_io; +#endif + pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class); + + 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); + debug("PCI Autoconfig: Found P2P bridge, device %d\n", + PCI_DEV(dev)); - DEBUGF("PCI Autoconfig: Found P2P bridge, device %d\n", PCI_DEV(dev)); + pciauto_setup_device(hose, dev, 2, pci_mem, + pci_prefetch, pci_io); +#ifdef CONFIG_DM_PCI + n = dm_pci_hose_probe_bus(hose, dev); + if (n < 0) + return n; + sub_bus = (unsigned int)n; +#else /* Passing in current_busno allows for sibling P2P bridges */ + hose->current_busno++; pciauto_prescan_setup_bridge(hose, dev, hose->current_busno); /* * need to figure out if this is a subordinate bridge on the bus @@ -372,35 +495,33 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev) n = pci_hose_scan_bus(hose, hose->current_busno); /* figure out the deepest we've gone for this leg */ - sub_bus = max(n, sub_bus); + sub_bus = max((unsigned int)n, sub_bus); pciauto_postscan_setup_bridge(hose, dev, sub_bus); sub_bus = hose->current_busno; - break; - - case PCI_CLASS_STORAGE_IDE: - pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prg_iface); - if (!(prg_iface & PCIAUTO_IDE_MODE_MASK)) { - DEBUGF("PCI Autoconfig: Skipping legacy mode IDE controller\n"); - return sub_bus; - } - - pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io); +#endif 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, pci_mem, + pci_prefetch, pci_io); - DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n", PCI_DEV(dev)); + debug("PCI Autoconfig: Found P2CardBus bridge, device %d\n", + PCI_DEV(dev)); +#ifndef CONFIG_DM_PCI hose->current_busno++; +#endif break; #if defined(CONFIG_PCIAUTO_SKIP_HOST_BRIDGE) case PCI_CLASS_BRIDGE_OTHER: - DEBUGF("PCI Autoconfig: Skipping bridge device %d\n", - PCI_DEV(dev)); + debug("PCI Autoconfig: Skipping bridge device %d\n", + PCI_DEV(dev)); break; #endif #if defined(CONFIG_MPC834x) && !defined(CONFIG_VME8349) @@ -411,12 +532,18 @@ int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev) * device claiming resources io/mem/irq.. we only allow for * 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); + debug("PCI Autoconfig: Broken bridge found, only minimal config\n"); + 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 */ + debug("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, pci_mem, + pci_prefetch, pci_io); break; }