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extend the function pci_get_device_info to determine a device with a specific IO address

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This commit is contained in:
Stefan Lankes 2014-12-29 00:13:57 +01:00
parent 21b6fdf309
commit c26a8fa4f8
2 changed files with 6 additions and 2 deletions
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3
arch/x86/include/asm/pci.h
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@ -60,12 +60,13 @@ int pci_init(void);
* @param vendor_id The device's vendor ID
* @param device_id the device's ID
* @param info Pointer to the record pci_info_t where among other the IObase address will be stored
* @param base Search for the preferred IO address. Zero, if any address is useful
*
* @return
* - 0 on success
* - -EINVAL on failure
*/
int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, pci_info_t* info);
int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, uint32_t base, pci_info_t* info);
#ifdef WITH_PCI_NAMES
/** @brief Print information of existing pci adapters

5
arch/x86/kernel/pci.c
View file

@ -143,7 +143,7 @@ int pci_init(void)
return 0;
}
int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, pci_info_t* info)
int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, uint32_t base, pci_info_t* info)
{
uint32_t slot, bus, i;
@ -166,6 +166,9 @@ int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, pci_info_t* info
info->size[i] = (info->base[i]) ? pci_what_size(bus, slot, i) : 0;
}
info->irq = pci_what_irq(bus, slot);
if (base)
if (!(info->base[0] == base))
continue;
return 0;
}
}