From 6c89663cb152bb49f7618f283d999c417fd85746 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 8 Jul 2015 13:06:40 +0800 Subject: [PATCH] pci: Configure expansion ROM during auto config process Currently PCI expansion ROM address is assigned by a call to pciauto_setup_rom() outside of the pci auto config process. This does not work when expansion ROM is on a device behind PCI bridge where bridge's memory limit register was already programmed to a value that does not cover the newly assigned expansion ROM address. To fix this, we should configure the ROM address during the auto config process. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Simon Glass Acked-by: Simon Glass --- drivers/pci/pci_auto.c | 48 +++++++++++++++++++----------------------- drivers/pci/pci_rom.c | 5 ----- include/pci.h | 9 -------- 3 files changed, 22 insertions(+), 40 deletions(-) diff --git a/drivers/pci/pci_auto.c b/drivers/pci/pci_auto.c index 7c109832f6..e034ed1715 100644 --- a/drivers/pci/pci_auto.c +++ b/drivers/pci/pci_auto.c @@ -87,6 +87,8 @@ void pciauto_setup_device(struct pci_controller *hose, pci_size_t bar_size; 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; @@ -182,38 +184,32 @@ void pciauto_setup_device(struct pci_controller *hose, bar_nr++; } + /* 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); + DEBUGF("PCI Autoconfig: ROM, size=%#x, ", 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; + DEBUGF("\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); } -int pciauto_setup_rom(struct pci_controller *hose, pci_dev_t dev) -{ - pci_addr_t bar_value; - pci_size_t bar_size; - u32 bar_response; - u16 cmdstat = 0; - - pci_hose_write_config_dword(hose, dev, PCI_ROM_ADDRESS, 0xfffffffe); - pci_hose_read_config_dword(hose, dev, PCI_ROM_ADDRESS, &bar_response); - if (!bar_response) - return -ENOENT; - - bar_size = -(bar_response & ~1); - DEBUGF("PCI Autoconfig: ROM, size=%#x, ", bar_size); - if (pciauto_region_allocate(hose->pci_mem, bar_size, &bar_value) == 0) { - pci_hose_write_config_dword(hose, dev, PCI_ROM_ADDRESS, - bar_value); - } - DEBUGF("\n"); - pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat); - cmdstat |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER; - pci_hose_write_config_word(hose, dev, PCI_COMMAND, cmdstat); - - return 0; -} - void pciauto_prescan_setup_bridge(struct pci_controller *hose, pci_dev_t dev, int sub_bus) { diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c index e7f995971c..aa06767d2a 100644 --- a/drivers/pci/pci_rom.c +++ b/drivers/pci/pci_rom.c @@ -84,11 +84,6 @@ static int pci_rom_probe(pci_dev_t dev, uint class, rom_address = CONFIG_VGA_BIOS_ADDR; #else - if (pciauto_setup_rom(pci_bus_to_hose(PCI_BUS(dev)), dev)) { - debug("Cannot find option ROM\n"); - return -ENOENT; - } - pci_read_config_dword(dev, PCI_ROM_ADDRESS, &rom_address); if (rom_address == 0x00000000 || rom_address == 0xffffffff) { debug("%s: rom_address=%x\n", __func__, rom_address); diff --git a/include/pci.h b/include/pci.h index 3af511b38d..542e68bceb 100644 --- a/include/pci.h +++ b/include/pci.h @@ -721,15 +721,6 @@ void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum, * */ u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum); -/** - * pciauto_setup_rom() - Set up access to a device ROM - * - * @hose: PCI hose to use - * @dev: PCI device to adjust - * @return 0 if done, -ve on error - */ -int pciauto_setup_rom(struct pci_controller *hose, pci_dev_t dev); - /** * pci_hose_find_devices() - Find devices by vendor/device ID * -- 2.39.5