diff options
Diffstat (limited to 'common/cmd_pci.c')
| -rw-r--r-- | common/cmd_pci.c | 687 |
1 files changed, 0 insertions, 687 deletions
diff --git a/common/cmd_pci.c b/common/cmd_pci.c deleted file mode 100644 index 8094d33..0000000 --- a/common/cmd_pci.c +++ /dev/null @@ -1,687 +0,0 @@ -/* - * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Andreas Heppel <aheppel@sysgo.de> - * - * (C) Copyright 2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * Wolfgang Grandegger, DENX Software Engineering, wg@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * PCI routines - */ - -#include <common.h> -#include <bootretry.h> -#include <cli.h> -#include <command.h> -#include <console.h> -#include <dm.h> -#include <asm/processor.h> -#include <asm/io.h> -#include <pci.h> - -struct pci_reg_info { - const char *name; - enum pci_size_t size; - u8 offset; -}; - -static int pci_byte_size(enum pci_size_t size) -{ - switch (size) { - case PCI_SIZE_8: - return 1; - case PCI_SIZE_16: - return 2; - case PCI_SIZE_32: - default: - return 4; - } -} - -static int pci_field_width(enum pci_size_t size) -{ - return pci_byte_size(size) * 2; -} - -#ifdef CONFIG_DM_PCI -static void pci_show_regs(struct udevice *dev, struct pci_reg_info *regs) -{ - for (; regs->name; regs++) { - unsigned long val; - - dm_pci_read_config(dev, regs->offset, &val, regs->size); - printf(" %s =%*s%#.*lx\n", regs->name, - (int)(28 - strlen(regs->name)), "", - pci_field_width(regs->size), val); - } -} -#else -static unsigned long pci_read_config(pci_dev_t dev, int offset, - enum pci_size_t size) -{ - u32 val32; - u16 val16; - u8 val8; - - switch (size) { - case PCI_SIZE_8: - pci_read_config_byte(dev, offset, &val8); - return val8; - case PCI_SIZE_16: - pci_read_config_word(dev, offset, &val16); - return val16; - case PCI_SIZE_32: - default: - pci_read_config_dword(dev, offset, &val32); - return val32; - } -} - -static void pci_show_regs(pci_dev_t dev, struct pci_reg_info *regs) -{ - for (; regs->name; regs++) { - printf(" %s =%*s%#.*lx\n", regs->name, - (int)(28 - strlen(regs->name)), "", - pci_field_width(regs->size), - pci_read_config(dev, regs->offset, regs->size)); - } -} -#endif - -static struct pci_reg_info regs_start[] = { - { "vendor ID", PCI_SIZE_16, PCI_VENDOR_ID }, - { "device ID", PCI_SIZE_16, PCI_DEVICE_ID }, - { "command register ID", PCI_SIZE_16, PCI_COMMAND }, - { "status register", PCI_SIZE_16, PCI_STATUS }, - { "revision ID", PCI_SIZE_8, PCI_REVISION_ID }, - {}, -}; - -static struct pci_reg_info regs_rest[] = { - { "sub class code", PCI_SIZE_8, PCI_CLASS_SUB_CODE }, - { "programming interface", PCI_SIZE_8, PCI_CLASS_PROG }, - { "cache line", PCI_SIZE_8, PCI_CACHE_LINE_SIZE }, - { "latency time", PCI_SIZE_8, PCI_LATENCY_TIMER }, - { "header type", PCI_SIZE_8, PCI_HEADER_TYPE }, - { "BIST", PCI_SIZE_8, PCI_BIST }, - { "base address 0", PCI_SIZE_32, PCI_BASE_ADDRESS_0 }, - {}, -}; - -static struct pci_reg_info regs_normal[] = { - { "base address 1", PCI_SIZE_32, PCI_BASE_ADDRESS_1 }, - { "base address 2", PCI_SIZE_32, PCI_BASE_ADDRESS_2 }, - { "base address 3", PCI_SIZE_32, PCI_BASE_ADDRESS_3 }, - { "base address 4", PCI_SIZE_32, PCI_BASE_ADDRESS_4 }, - { "base address 5", PCI_SIZE_32, PCI_BASE_ADDRESS_5 }, - { "cardBus CIS pointer", PCI_SIZE_32, PCI_CARDBUS_CIS }, - { "sub system vendor ID", PCI_SIZE_16, PCI_SUBSYSTEM_VENDOR_ID }, - { "sub system ID", PCI_SIZE_16, PCI_SUBSYSTEM_ID }, - { "expansion ROM base address", PCI_SIZE_32, PCI_ROM_ADDRESS }, - { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE }, - { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN }, - { "min Grant", PCI_SIZE_8, PCI_MIN_GNT }, - { "max Latency", PCI_SIZE_8, PCI_MAX_LAT }, - {}, -}; - -static struct pci_reg_info regs_bridge[] = { - { "base address 1", PCI_SIZE_32, PCI_BASE_ADDRESS_1 }, - { "primary bus number", PCI_SIZE_8, PCI_PRIMARY_BUS }, - { "secondary bus number", PCI_SIZE_8, PCI_SECONDARY_BUS }, - { "subordinate bus number", PCI_SIZE_8, PCI_SUBORDINATE_BUS }, - { "secondary latency timer", PCI_SIZE_8, PCI_SEC_LATENCY_TIMER }, - { "IO base", PCI_SIZE_8, PCI_IO_BASE }, - { "IO limit", PCI_SIZE_8, PCI_IO_LIMIT }, - { "secondary status", PCI_SIZE_16, PCI_SEC_STATUS }, - { "memory base", PCI_SIZE_16, PCI_MEMORY_BASE }, - { "memory limit", PCI_SIZE_16, PCI_MEMORY_LIMIT }, - { "prefetch memory base", PCI_SIZE_16, PCI_PREF_MEMORY_BASE }, - { "prefetch memory limit", PCI_SIZE_16, PCI_PREF_MEMORY_LIMIT }, - { "prefetch memory base upper", PCI_SIZE_32, PCI_PREF_BASE_UPPER32 }, - { "prefetch memory limit upper", PCI_SIZE_32, PCI_PREF_LIMIT_UPPER32 }, - { "IO base upper 16 bits", PCI_SIZE_16, PCI_IO_BASE_UPPER16 }, - { "IO limit upper 16 bits", PCI_SIZE_16, PCI_IO_LIMIT_UPPER16 }, - { "expansion ROM base address", PCI_SIZE_32, PCI_ROM_ADDRESS1 }, - { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE }, - { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN }, - { "bridge control", PCI_SIZE_16, PCI_BRIDGE_CONTROL }, - {}, -}; - -static struct pci_reg_info regs_cardbus[] = { - { "capabilities", PCI_SIZE_8, PCI_CB_CAPABILITY_LIST }, - { "secondary status", PCI_SIZE_16, PCI_CB_SEC_STATUS }, - { "primary bus number", PCI_SIZE_8, PCI_CB_PRIMARY_BUS }, - { "CardBus number", PCI_SIZE_8, PCI_CB_CARD_BUS }, - { "subordinate bus number", PCI_SIZE_8, PCI_CB_SUBORDINATE_BUS }, - { "CardBus latency timer", PCI_SIZE_8, PCI_CB_LATENCY_TIMER }, - { "CardBus memory base 0", PCI_SIZE_32, PCI_CB_MEMORY_BASE_0 }, - { "CardBus memory limit 0", PCI_SIZE_32, PCI_CB_MEMORY_LIMIT_0 }, - { "CardBus memory base 1", PCI_SIZE_32, PCI_CB_MEMORY_BASE_1 }, - { "CardBus memory limit 1", PCI_SIZE_32, PCI_CB_MEMORY_LIMIT_1 }, - { "CardBus IO base 0", PCI_SIZE_16, PCI_CB_IO_BASE_0 }, - { "CardBus IO base high 0", PCI_SIZE_16, PCI_CB_IO_BASE_0_HI }, - { "CardBus IO limit 0", PCI_SIZE_16, PCI_CB_IO_LIMIT_0 }, - { "CardBus IO limit high 0", PCI_SIZE_16, PCI_CB_IO_LIMIT_0_HI }, - { "CardBus IO base 1", PCI_SIZE_16, PCI_CB_IO_BASE_1 }, - { "CardBus IO base high 1", PCI_SIZE_16, PCI_CB_IO_BASE_1_HI }, - { "CardBus IO limit 1", PCI_SIZE_16, PCI_CB_IO_LIMIT_1 }, - { "CardBus IO limit high 1", PCI_SIZE_16, PCI_CB_IO_LIMIT_1_HI }, - { "interrupt line", PCI_SIZE_8, PCI_INTERRUPT_LINE }, - { "interrupt pin", PCI_SIZE_8, PCI_INTERRUPT_PIN }, - { "bridge control", PCI_SIZE_16, PCI_CB_BRIDGE_CONTROL }, - { "subvendor ID", PCI_SIZE_16, PCI_CB_SUBSYSTEM_VENDOR_ID }, - { "subdevice ID", PCI_SIZE_16, PCI_CB_SUBSYSTEM_ID }, - { "PC Card 16bit base address", PCI_SIZE_32, PCI_CB_LEGACY_MODE_BASE }, - {}, -}; - -/** - * pci_header_show() - Show the header of the specified PCI device. - * - * @dev: Bus+Device+Function number - */ -#ifdef CONFIG_DM_PCI -void pci_header_show(struct udevice *dev) -#else -void pci_header_show(pci_dev_t dev) -#endif -{ -#ifdef CONFIG_DM_PCI - unsigned long class, header_type; - - dm_pci_read_config(dev, PCI_CLASS_CODE, &class, PCI_SIZE_8); - dm_pci_read_config(dev, PCI_HEADER_TYPE, &header_type, PCI_SIZE_8); -#else - u8 class, header_type; - - pci_read_config_byte(dev, PCI_CLASS_CODE, &class); - pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type); -#endif - pci_show_regs(dev, regs_start); - printf(" class code = 0x%.2x (%s)\n", (int)class, - pci_class_str(class)); - pci_show_regs(dev, regs_rest); - - switch (header_type & 0x03) { - case PCI_HEADER_TYPE_NORMAL: /* "normal" PCI device */ - pci_show_regs(dev, regs_normal); - break; - case PCI_HEADER_TYPE_BRIDGE: /* PCI-to-PCI bridge */ - pci_show_regs(dev, regs_bridge); - break; - case PCI_HEADER_TYPE_CARDBUS: /* PCI-to-CardBus bridge */ - pci_show_regs(dev, regs_cardbus); - break; - - default: - printf("unknown header\n"); - break; - } -} - -void pciinfo_header(int busnum, bool short_listing) -{ - printf("Scanning PCI devices on bus %d\n", busnum); - - if (short_listing) { - printf("BusDevFun VendorId DeviceId Device Class Sub-Class\n"); - printf("_____________________________________________________________\n"); - } -} - -#ifdef CONFIG_DM_PCI -/** - * pci_header_show_brief() - Show the short-form PCI device header - * - * Reads and prints the header of the specified PCI device in short form. - * - * @dev: PCI device to show - */ -static void pci_header_show_brief(struct udevice *dev) -{ - ulong vendor, device; - ulong class, subclass; - - dm_pci_read_config(dev, PCI_VENDOR_ID, &vendor, PCI_SIZE_16); - dm_pci_read_config(dev, PCI_DEVICE_ID, &device, PCI_SIZE_16); - dm_pci_read_config(dev, PCI_CLASS_CODE, &class, PCI_SIZE_8); - dm_pci_read_config(dev, PCI_CLASS_SUB_CODE, &subclass, PCI_SIZE_8); - - printf("0x%.4lx 0x%.4lx %-23s 0x%.2lx\n", - vendor, device, - pci_class_str(class), subclass); -} - -static void pciinfo(struct udevice *bus, bool short_listing) -{ - struct udevice *dev; - - pciinfo_header(bus->seq, short_listing); - - for (device_find_first_child(bus, &dev); - dev; - device_find_next_child(&dev)) { - struct pci_child_platdata *pplat; - - pplat = dev_get_parent_platdata(dev); - if (short_listing) { - printf("%02x.%02x.%02x ", bus->seq, - PCI_DEV(pplat->devfn), PCI_FUNC(pplat->devfn)); - pci_header_show_brief(dev); - } else { - printf("\nFound PCI device %02x.%02x.%02x:\n", bus->seq, - PCI_DEV(pplat->devfn), PCI_FUNC(pplat->devfn)); - pci_header_show(dev); - } - } -} - -#else - -/** - * pci_header_show_brief() - Show the short-form PCI device header - * - * Reads and prints the header of the specified PCI device in short form. - * - * @dev: Bus+Device+Function number - */ -void pci_header_show_brief(pci_dev_t dev) -{ - u16 vendor, device; - u8 class, subclass; - - pci_read_config_word(dev, PCI_VENDOR_ID, &vendor); - pci_read_config_word(dev, PCI_DEVICE_ID, &device); - pci_read_config_byte(dev, PCI_CLASS_CODE, &class); - pci_read_config_byte(dev, PCI_CLASS_SUB_CODE, &subclass); - - printf("0x%.4x 0x%.4x %-23s 0x%.2x\n", - vendor, device, - pci_class_str(class), subclass); -} - -/** - * pciinfo() - Show a list of devices on the PCI bus - * - * Show information about devices on PCI bus. Depending on @short_pci_listing - * the output will be more or less exhaustive. - * - * @bus_num: The number of the bus to be scanned - * @short_pci_listing: true to use short form, showing only a brief header - * for each device - */ -void pciinfo(int bus_num, int short_pci_listing) -{ - struct pci_controller *hose = pci_bus_to_hose(bus_num); - int device; - int function; - unsigned char header_type; - unsigned short vendor_id; - pci_dev_t dev; - int ret; - - if (!hose) - return; - - pciinfo_header(bus_num, short_pci_listing); - - for (device = 0; device < PCI_MAX_PCI_DEVICES; device++) { - header_type = 0; - vendor_id = 0; - for (function = 0; function < PCI_MAX_PCI_FUNCTIONS; - function++) { - /* - * If this is not a multi-function device, we skip - * the rest. - */ - if (function && !(header_type & 0x80)) - break; - - dev = PCI_BDF(bus_num, device, function); - - if (pci_skip_dev(hose, dev)) - continue; - - ret = pci_read_config_word(dev, PCI_VENDOR_ID, - &vendor_id); - if (ret) - goto error; - if ((vendor_id == 0xFFFF) || (vendor_id == 0x0000)) - continue; - - if (!function) { - pci_read_config_byte(dev, PCI_HEADER_TYPE, - &header_type); - } - - if (short_pci_listing) { - printf("%02x.%02x.%02x ", bus_num, device, - function); - pci_header_show_brief(dev); - } else { - printf("\nFound PCI device %02x.%02x.%02x:\n", - bus_num, device, function); - pci_header_show(dev); - } - } - } - - return; -error: - printf("Cannot read bus configuration: %d\n", ret); -} -#endif - -/** - * get_pci_dev() - Convert the "bus.device.function" identifier into a number - * - * @name: Device string in the form "bus.device.function" where each is in hex - * @return encoded pci_dev_t or -1 if the string was invalid - */ -static pci_dev_t get_pci_dev(char *name) -{ - char cnum[12]; - int len, i, iold, n; - int bdfs[3] = {0,0,0}; - - len = strlen(name); - if (len > 8) - return -1; - for (i = 0, iold = 0, n = 0; i < len; i++) { - if (name[i] == '.') { - memcpy(cnum, &name[iold], i - iold); - cnum[i - iold] = '\0'; - bdfs[n++] = simple_strtoul(cnum, NULL, 16); - iold = i + 1; - } - } - strcpy(cnum, &name[iold]); - if (n == 0) - n = 1; - bdfs[n] = simple_strtoul(cnum, NULL, 16); - - return PCI_BDF(bdfs[0], bdfs[1], bdfs[2]); -} - -#ifdef CONFIG_DM_PCI -static int pci_cfg_display(struct udevice *dev, ulong addr, - enum pci_size_t size, ulong length) -#else -static int pci_cfg_display(pci_dev_t bdf, ulong addr, enum pci_size_t size, - ulong length) -#endif -{ -#define DISP_LINE_LEN 16 - ulong i, nbytes, linebytes; - int byte_size; - int rc = 0; - - byte_size = pci_byte_size(size); - if (length == 0) - length = 0x40 / byte_size; /* Standard PCI config space */ - - /* Print the lines. - * once, and all accesses are with the specified bus width. - */ - nbytes = length * byte_size; - do { - printf("%08lx:", addr); - linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes; - for (i = 0; i < linebytes; i += byte_size) { - unsigned long val; - -#ifdef CONFIG_DM_PCI - dm_pci_read_config(dev, addr, &val, size); -#else - val = pci_read_config(bdf, addr, size); -#endif - printf(" %0*lx", pci_field_width(size), val); - addr += byte_size; - } - printf("\n"); - nbytes -= linebytes; - if (ctrlc()) { - rc = 1; - break; - } - } while (nbytes > 0); - - return (rc); -} - -#ifndef CONFIG_DM_PCI -static int pci_cfg_write (pci_dev_t bdf, ulong addr, ulong size, ulong value) -{ - if (size == 4) { - pci_write_config_dword(bdf, addr, value); - } - else if (size == 2) { - ushort val = value & 0xffff; - pci_write_config_word(bdf, addr, val); - } - else { - u_char val = value & 0xff; - pci_write_config_byte(bdf, addr, val); - } - return 0; -} -#endif - -#ifdef CONFIG_DM_PCI -static int pci_cfg_modify(struct udevice *dev, ulong addr, ulong size, - ulong value, int incrflag) -#else -static int pci_cfg_modify(pci_dev_t bdf, ulong addr, ulong size, ulong value, - int incrflag) -#endif -{ - ulong i; - int nbytes; - ulong val; - - /* Print the address, followed by value. Then accept input for - * the next value. A non-converted value exits. - */ - do { - printf("%08lx:", addr); -#ifdef CONFIG_DM_PCI - dm_pci_read_config(dev, addr, &val, size); -#else - val = pci_read_config(bdf, addr, size); -#endif - printf(" %0*lx", pci_field_width(size), val); - - nbytes = cli_readline(" ? "); - if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { - /* <CR> pressed as only input, don't modify current - * location and move to next. "-" pressed will go back. - */ - if (incrflag) - addr += nbytes ? -size : size; - nbytes = 1; - /* good enough to not time out */ - bootretry_reset_cmd_timeout(); - } -#ifdef CONFIG_BOOT_RETRY_TIME - else if (nbytes == -2) { - break; /* timed out, exit the command */ - } -#endif - else { - char *endp; - i = simple_strtoul(console_buffer, &endp, 16); - nbytes = endp - console_buffer; - if (nbytes) { - /* good enough to not time out - */ - bootretry_reset_cmd_timeout(); -#ifdef CONFIG_DM_PCI - dm_pci_write_config(dev, addr, i, size); -#else - pci_cfg_write(bdf, addr, size, i); -#endif - if (incrflag) - addr += size; - } - } - } while (nbytes); - - return 0; -} - -/* PCI Configuration Space access commands - * - * Syntax: - * pci display[.b, .w, .l] bus.device.function} [addr] [len] - * pci next[.b, .w, .l] bus.device.function [addr] - * pci modify[.b, .w, .l] bus.device.function [addr] - * pci write[.b, .w, .l] bus.device.function addr value - */ -static int do_pci(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - ulong addr = 0, value = 0, cmd_size = 0; - enum pci_size_t size = PCI_SIZE_32; -#ifdef CONFIG_DM_PCI - struct udevice *dev, *bus; -#else - pci_dev_t dev; -#endif - int busnum = 0; - pci_dev_t bdf = 0; - char cmd = 's'; - int ret = 0; - - if (argc > 1) - cmd = argv[1][0]; - - switch (cmd) { - case 'd': /* display */ - case 'n': /* next */ - case 'm': /* modify */ - case 'w': /* write */ - /* Check for a size specification. */ - cmd_size = cmd_get_data_size(argv[1], 4); - size = (cmd_size == 4) ? PCI_SIZE_32 : cmd_size - 1; - if (argc > 3) - addr = simple_strtoul(argv[3], NULL, 16); - if (argc > 4) - value = simple_strtoul(argv[4], NULL, 16); - case 'h': /* header */ - if (argc < 3) - goto usage; - if ((bdf = get_pci_dev(argv[2])) == -1) - return 1; - break; -#ifdef CONFIG_CMD_PCI_ENUM - case 'e': - break; -#endif - default: /* scan bus */ - value = 1; /* short listing */ - if (argc > 1) { - if (argv[argc-1][0] == 'l') { - value = 0; - argc--; - } - if (argc > 1) - busnum = simple_strtoul(argv[1], NULL, 16); - } -#ifdef CONFIG_DM_PCI - ret = uclass_get_device_by_seq(UCLASS_PCI, busnum, &bus); - if (ret) { - printf("No such bus\n"); - return CMD_RET_FAILURE; - } - pciinfo(bus, value); -#else - pciinfo(busnum, value); -#endif - return 0; - } - -#ifdef CONFIG_DM_PCI - ret = dm_pci_bus_find_bdf(bdf, &dev); - if (ret) { - printf("No such device\n"); - return CMD_RET_FAILURE; - } -#else - dev = bdf; -#endif - - switch (argv[1][0]) { - case 'h': /* header */ - pci_header_show(dev); - break; - case 'd': /* display */ - return pci_cfg_display(dev, addr, size, value); -#ifdef CONFIG_CMD_PCI_ENUM - case 'e': -# ifdef CONFIG_DM_PCI - printf("This command is not yet supported with driver model\n"); -# else - pci_init(); -# endif - break; -#endif - case 'n': /* next */ - if (argc < 4) - goto usage; - ret = pci_cfg_modify(dev, addr, size, value, 0); - break; - case 'm': /* modify */ - if (argc < 4) - goto usage; - ret = pci_cfg_modify(dev, addr, size, value, 1); - break; - case 'w': /* write */ - if (argc < 5) - goto usage; -#ifdef CONFIG_DM_PCI - ret = dm_pci_write_config(dev, addr, value, size); -#else - ret = pci_cfg_write(dev, addr, size, value); -#endif - break; - default: - ret = CMD_RET_USAGE; - break; - } - - return ret; - usage: - return CMD_RET_USAGE; -} - -/***************************************************/ - -#ifdef CONFIG_SYS_LONGHELP -static char pci_help_text[] = - "[bus] [long]\n" - " - short or long list of PCI devices on bus 'bus'\n" -#ifdef CONFIG_CMD_PCI_ENUM - "pci enum\n" - " - re-enumerate PCI buses\n" -#endif - "pci header b.d.f\n" - " - show header of PCI device 'bus.device.function'\n" - "pci display[.b, .w, .l] b.d.f [address] [# of objects]\n" - " - display PCI configuration space (CFG)\n" - "pci next[.b, .w, .l] b.d.f address\n" - " - modify, read and keep CFG address\n" - "pci modify[.b, .w, .l] b.d.f address\n" - " - modify, auto increment CFG address\n" - "pci write[.b, .w, .l] b.d.f address value\n" - " - write to CFG address"; -#endif - -U_BOOT_CMD( - pci, 5, 1, do_pci, - "list and access PCI Configuration Space", pci_help_text -); |