diff options
Diffstat (limited to 'grub-core/commands/pcidump.c')
| -rw-r--r-- | grub-core/commands/pcidump.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/grub-core/commands/pcidump.c b/grub-core/commands/pcidump.c new file mode 100644 index 0000000..f72628f --- /dev/null +++ b/grub-core/commands/pcidump.c @@ -0,0 +1,174 @@ +/* lspci.c - List PCI devices. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2013 Free Software Foundation, Inc. + * + * GRUB 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 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/pci.h> +#include <grub/dl.h> +#include <grub/misc.h> +#include <grub/extcmd.h> +#include <grub/env.h> +#include <grub/mm.h> +#include <grub/i18n.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +struct iter_cxt +{ + grub_uint32_t pciid_check_mask, pciid_check_value; + int bus, device, function; + int check_bus, check_device, check_function; +}; + +static const struct grub_arg_option options[] = + { + {0, 'd', 0, N_("Select device by vendor and device IDs."), + N_("[vendor]:[device]"), ARG_TYPE_STRING}, + {0, 's', 0, N_("Select device by its position on the bus."), + N_("[bus]:[slot][.func]"), ARG_TYPE_STRING}, + {0, 0, 0, 0, 0, 0} + }; + +static int +grub_pcidump_iter (grub_pci_device_t dev, grub_pci_id_t pciid, + void *data) +{ + struct iter_cxt *ctx = data; + grub_pci_address_t addr; + int i; + + if ((pciid & ctx->pciid_check_mask) != ctx->pciid_check_value) + return 0; + + if (ctx->check_bus && grub_pci_get_bus (dev) != ctx->bus) + return 0; + + if (ctx->check_device && grub_pci_get_device (dev) != ctx->device) + return 0; + + if (ctx->check_function && grub_pci_get_function (dev) != ctx->function) + return 0; + + for (i = 0; i < 256; i += 4) + { + addr = grub_pci_make_address (dev, i); + grub_printf ("%08x ", grub_pci_read (addr)); + if ((i & 0xc) == 0xc) + grub_printf ("\n"); + } + + return 0; +} + +static grub_err_t +grub_cmd_pcidump (grub_extcmd_context_t ctxt, + int argc __attribute__ ((unused)), + char **argv __attribute__ ((unused))) +{ + const char *ptr; + struct iter_cxt ctx = + { + .pciid_check_value = 0, + .pciid_check_mask = 0, + .check_bus = 0, + .check_device = 0, + .check_function = 0, + .bus = 0, + .function = 0, + .device = 0 + }; + + if (ctxt->state[0].set) + { + ptr = ctxt->state[0].arg; + ctx.pciid_check_value |= (grub_strtoul (ptr, &ptr, 16) & 0xffff); + if (grub_errno == GRUB_ERR_BAD_NUMBER) + { + grub_errno = GRUB_ERR_NONE; + ptr = ctxt->state[0].arg; + } + else + ctx.pciid_check_mask |= 0xffff; + if (grub_errno) + return grub_errno; + if (*ptr != ':') + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("missing `%c' symbol"), ':'); + ptr++; + ctx.pciid_check_value |= (grub_strtoul (ptr, &ptr, 16) & 0xffff) << 16; + if (grub_errno == GRUB_ERR_BAD_NUMBER) + grub_errno = GRUB_ERR_NONE; + else + ctx.pciid_check_mask |= 0xffff0000; + } + + ctx.pciid_check_value &= ctx.pciid_check_mask; + + if (ctxt->state[1].set) + { + const char *optr; + + ptr = ctxt->state[1].arg; + optr = ptr; + ctx.bus = grub_strtoul (ptr, &ptr, 16); + if (grub_errno == GRUB_ERR_BAD_NUMBER) + { + grub_errno = GRUB_ERR_NONE; + ptr = optr; + } + else + ctx.check_bus = 1; + if (grub_errno) + return grub_errno; + if (*ptr != ':') + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("missing `%c' symbol"), ':'); + ptr++; + optr = ptr; + ctx.device = grub_strtoul (ptr, &ptr, 16); + if (grub_errno == GRUB_ERR_BAD_NUMBER) + { + grub_errno = GRUB_ERR_NONE; + ptr = optr; + } + else + ctx.check_device = 1; + if (*ptr == '.') + { + ptr++; + ctx.function = grub_strtoul (ptr, &ptr, 16); + if (grub_errno) + return grub_errno; + ctx.check_function = 1; + } + } + + grub_pci_iterate (grub_pcidump_iter, &ctx); + return GRUB_ERR_NONE; +} + +static grub_extcmd_t cmd; + +GRUB_MOD_INIT(pcidump) +{ + cmd = grub_register_extcmd ("pcidump", grub_cmd_pcidump, 0, + N_("[-s POSITION] [-d DEVICE]"), + N_("Show raw dump of the PCI configuration space."), options); +} + +GRUB_MOD_FINI(pcidump) +{ + grub_unregister_extcmd (cmd); +} |