Re: [kvm-unit-tests PATCH v5 08/12] pci: Add pci_print()

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On Tue, Jul 19, 2016 at 02:53:05PM +0200, Alexander Gordeev wrote:
> Cc: Thomas Huth <thuth@xxxxxxxxxx>
> Cc: Andrew Jones <drjones@xxxxxxxxxx>
> Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
> ---
>  lib/pci.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  lib/pci.h |  3 +++
>  2 files changed, 81 insertions(+)


Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>

> 
> diff --git a/lib/pci.c b/lib/pci.c
> index 947bfb2c8f47..f01a085391f3 100644
> --- a/lib/pci.c
> +++ b/lib/pci.c
> @@ -126,3 +126,81 @@ bool pci_bar_is64(pcidevaddr_t dev, int bar_num)
>  	return (bar & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
>  		      PCI_BASE_ADDRESS_MEM_TYPE_64;
>  }
> +
> +static void pci_dev_print(pcidevaddr_t dev)
> +{
> +	uint16_t vendor_id = pci_config_readw(dev, PCI_VENDOR_ID);
> +	uint16_t device_id = pci_config_readw(dev, PCI_DEVICE_ID);
> +	uint8_t header = pci_config_readb(dev, PCI_HEADER_TYPE);
> +	uint8_t progif = pci_config_readb(dev, PCI_CLASS_PROG);
> +	uint8_t subclass = pci_config_readb(dev, PCI_CLASS_DEVICE);
> +	uint8_t class = pci_config_readb(dev, PCI_CLASS_DEVICE + 1);
> +	int i;
> +
> +	printf("dev %2d fn %d vendor_id %04x device_id %04x type %02x "
> +	       "progif %02x class %02x subclass %02x\n",
> +	       dev / 8, dev % 8, vendor_id, device_id, header,
> +	       progif, class, subclass);
> +
> +	if ((header & PCI_HEADER_TYPE_MASK) != PCI_HEADER_TYPE_NORMAL)
> +		return;
> +
> +	for (i = 0; i < 6; i++) {
> +		phys_addr_t size, start, end;
> +		uint32_t bar;
> +
> +		size = pci_bar_size(dev, i);
> +		if (!size)
> +			continue;
> +
> +		start = pci_bar_get_addr(dev, i);
> +		end = start + size - 1;
> +
> +		if (pci_bar_is64(dev, i)) {
> +			printf("\tBAR#%d,%d [%" PRIx64 "-%" PRIx64 " ",
> +			       i, i + 1, start, end);
> +			i++;
> +		} else {
> +			printf("\tBAR#%d    [%02x-%02x ",
> +			       i, (uint32_t)start, (uint32_t)end);
> +		}
> +
> +		bar = pci_bar_get(dev, i);
> +
> +		if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
> +			printf("PIO]\n");
> +			continue;
> +		}
> +
> +		printf("MEM");
> +
> +		switch (bar & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
> +		case PCI_BASE_ADDRESS_MEM_TYPE_32:
> +			printf("32");
> +			break;
> +		case PCI_BASE_ADDRESS_MEM_TYPE_1M:
> +			printf("1M");
> +			break;
> +		case PCI_BASE_ADDRESS_MEM_TYPE_64:
> +			printf("64");
> +			break;
> +		default:
> +			assert(0);
> +		}
> +
> +		if (bar & PCI_BASE_ADDRESS_MEM_PREFETCH)
> +			printf("/p");
> +
> +		printf("]\n");
> +	}
> +}
> +
> +void pci_print(void)
> +{
> +	pcidevaddr_t dev;
> +
> +	for (dev = 0; dev < 256; ++dev) {
> +		if (pci_dev_exists(dev))
> +			pci_dev_print(dev);
> +	}
> +}
> diff --git a/lib/pci.h b/lib/pci.h
> index 2efb976d13ea..ff32ea683c94 100644
> --- a/lib/pci.h
> +++ b/lib/pci.h
> @@ -15,6 +15,7 @@ enum {
>  	PCIDEVADDR_INVALID = 0xffff,
>  };
>  
> +void pci_print(void);
>  bool pci_dev_exists(pcidevaddr_t dev);
>  pcidevaddr_t pci_find_dev(uint16_t vendor_id, uint16_t device_id);
>  
> @@ -56,4 +57,6 @@ struct pci_test_dev_hdr {
>  	uint8_t  name[];
>  };
>  
> +#define  PCI_HEADER_TYPE_MASK		0x7f
> +
>  #endif /* PCI_H */
> -- 
> 1.8.3.1
> 
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