diff options
Diffstat (limited to 'include/grub/pci.h')
| -rw-r--r-- | include/grub/pci.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/include/grub/pci.h b/include/grub/pci.h new file mode 100644 index 0000000..f34e3d9 --- /dev/null +++ b/include/grub/pci.h @@ -0,0 +1,137 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008,2009 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/>. + */ + +#ifndef GRUB_PCI_H +#define GRUB_PCI_H 1 + +#ifndef ASM_FILE +#include <grub/types.h> +#include <grub/symbol.h> +#endif + +#define GRUB_PCI_ADDR_SPACE_MASK 0x01 +#define GRUB_PCI_ADDR_SPACE_MEMORY 0x00 +#define GRUB_PCI_ADDR_SPACE_IO 0x01 + +#define GRUB_PCI_ADDR_MEM_TYPE_MASK 0x06 +#define GRUB_PCI_ADDR_MEM_TYPE_32 0x00 /* 32 bit address */ +#define GRUB_PCI_ADDR_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ +#define GRUB_PCI_ADDR_MEM_TYPE_64 0x04 /* 64 bit address */ +#define GRUB_PCI_ADDR_MEM_PREFETCH 0x08 /* prefetchable */ + +#define GRUB_PCI_ADDR_MEM_MASK ~0xf +#define GRUB_PCI_ADDR_IO_MASK ~0x03 + +#define GRUB_PCI_REG_PCI_ID 0x00 +#define GRUB_PCI_REG_VENDOR 0x00 +#define GRUB_PCI_REG_DEVICE 0x02 +#define GRUB_PCI_REG_COMMAND 0x04 +#define GRUB_PCI_REG_STATUS 0x06 +#define GRUB_PCI_REG_REVISION 0x08 +#define GRUB_PCI_REG_CLASS 0x08 +#define GRUB_PCI_REG_CACHELINE 0x0c +#define GRUB_PCI_REG_LAT_TIMER 0x0d +#define GRUB_PCI_REG_HEADER_TYPE 0x0e +#define GRUB_PCI_REG_BIST 0x0f +#define GRUB_PCI_REG_ADDRESSES 0x10 + +/* Beware that 64-bit address takes 2 registers. */ +#define GRUB_PCI_REG_ADDRESS_REG0 0x10 +#define GRUB_PCI_REG_ADDRESS_REG1 0x14 +#define GRUB_PCI_REG_ADDRESS_REG2 0x18 +#define GRUB_PCI_REG_ADDRESS_REG3 0x1c +#define GRUB_PCI_REG_ADDRESS_REG4 0x20 +#define GRUB_PCI_REG_ADDRESS_REG5 0x24 + +#define GRUB_PCI_REG_CIS_POINTER 0x28 +#define GRUB_PCI_REG_SUBVENDOR 0x2c +#define GRUB_PCI_REG_SUBSYSTEM 0x2e +#define GRUB_PCI_REG_ROM_ADDRESS 0x30 +#define GRUB_PCI_REG_CAP_POINTER 0x34 +#define GRUB_PCI_REG_IRQ_LINE 0x3c +#define GRUB_PCI_REG_IRQ_PIN 0x3d +#define GRUB_PCI_REG_MIN_GNT 0x3e +#define GRUB_PCI_REG_MAX_LAT 0x3f + +#define GRUB_PCI_COMMAND_IO_ENABLED 0x0001 +#define GRUB_PCI_COMMAND_MEM_ENABLED 0x0002 +#define GRUB_PCI_COMMAND_BUS_MASTER 0x0004 +#define GRUB_PCI_COMMAND_PARITY_ERROR 0x0040 +#define GRUB_PCI_COMMAND_SERR_ENABLE 0x0100 + +#define GRUB_PCI_STATUS_CAPABILITIES 0x0010 +#define GRUB_PCI_STATUS_66MHZ_CAPABLE 0x0020 +#define GRUB_PCI_STATUS_FAST_B2B_CAPABLE 0x0080 + +#define GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT 9 +#define GRUB_PCI_STATUS_DEVSEL_TIMING_MASK 0x0600 +#define GRUB_PCI_CLASS_SUBCLASS_VGA 0x0300 + +#ifndef ASM_FILE +typedef grub_uint32_t grub_pci_id_t; + +#ifdef GRUB_MACHINE_EMU +#include <grub/pciutils.h> +#else +typedef grub_uint32_t grub_pci_address_t; +struct grub_pci_device +{ + int bus; + int device; + int function; +}; +typedef struct grub_pci_device grub_pci_device_t; +static inline int +grub_pci_get_bus (grub_pci_device_t dev) +{ + return dev.bus; +} + +static inline int +grub_pci_get_device (grub_pci_device_t dev) +{ + return dev.device; +} + +static inline int +grub_pci_get_function (grub_pci_device_t dev) +{ + return dev.function; +} +#include <grub/cpu/pci.h> +#endif + +typedef int NESTED_FUNC_ATTR (*grub_pci_iteratefunc_t) + (grub_pci_device_t dev, grub_pci_id_t pciid); + +grub_pci_address_t EXPORT_FUNC(grub_pci_make_address) (grub_pci_device_t dev, + int reg); + +void EXPORT_FUNC(grub_pci_iterate) (grub_pci_iteratefunc_t hook); + +struct grub_pci_dma_chunk; + +struct grub_pci_dma_chunk *EXPORT_FUNC(grub_memalign_dma32) (grub_size_t align, + grub_size_t size); +void EXPORT_FUNC(grub_dma_free) (struct grub_pci_dma_chunk *ch); +volatile void *EXPORT_FUNC(grub_dma_get_virt) (struct grub_pci_dma_chunk *ch); +grub_uint32_t EXPORT_FUNC(grub_dma_get_phys) (struct grub_pci_dma_chunk *ch); + +#endif + +#endif /* GRUB_PCI_H */ |