diff options
Diffstat (limited to 'drivers/pci.c')
-rw-r--r-- | drivers/pci.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/drivers/pci.c b/drivers/pci.c deleted file mode 100644 index 5fe14bd..0000000 --- a/drivers/pci.c +++ /dev/null @@ -1,69 +0,0 @@ -#include <assert.h> -#include <cpu/io.h> -#include <drivers/pci.h> -#include <stdio.h> - -#define CONFIG_ADDRESS 0xCF8 -#define CONFIG_DATA 0xCFC - -void pci_config_write32(const struct PCI_DEVICE *device, uint8_t func, - uint8_t offset, uint32_t data) { - uint32_t address; - uint32_t lbus = (uint32_t)device->bus; - uint32_t lslot = (uint32_t)device->slot; - uint32_t lfunc = (uint32_t)func; - - // Create configuration address as per Figure 1 - address = (uint32_t)((lbus << 16) | (lslot << 11) | (lfunc << 8) | - (offset & 0xFC) | ((uint32_t)0x80000000)); - - // Write out the address - outl(CONFIG_ADDRESS, address); - outl(CONFIG_DATA, data); -} - -uint32_t pci_config_read32(const struct PCI_DEVICE *device, uint8_t func, - uint8_t offset) { - uint32_t address; - uint32_t lbus = (uint32_t)device->bus; - uint32_t lslot = (uint32_t)device->slot; - uint32_t lfunc = (uint32_t)func; - - // Create configuration address as per Figure 1 - address = (uint32_t)((lbus << 16) | (lslot << 11) | (lfunc << 8) | - (offset & 0xFC) | ((uint32_t)0x80000000)); - - // Write out the address - outl(CONFIG_ADDRESS, address); - return inl(CONFIG_DATA); -} - -int pci_populate_device_struct(uint16_t vendor, uint16_t device, - struct PCI_DEVICE *pci_device) { - pci_device->vendor = vendor; - pci_device->device = device; - - for (int bus = 0; bus < 256; bus++) { - for (int slot = 0; slot < 256; slot++) { - struct PCI_DEVICE tmp; - tmp.bus = bus; - tmp.slot = slot; - uint32_t device_vendor = pci_config_read32(&tmp, 0, 0); - if (vendor != (device_vendor & 0xFFFF)) - continue; - if (device != (device_vendor >> 16)) - continue; - pci_device->bus = bus; - pci_device->slot = slot; - uint32_t bar0 = pci_config_read32(pci_device, 0, 0x10); - assert(bar0 & 0x1 && "Only support memory IO"); - pci_device->gen.base_mem_io = bar0 & (~0x3); - return 1; - } - } - return 0; -} - -uint8_t pci_get_interrupt_line(const struct PCI_DEVICE *device) { - return pci_config_read32(device, 0, 0x3C) & 0xFF; -} |