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[sfc] Add support for X25xx adapters
The first adapters in this family are X2522-10, X2522-25, X2541 and
X2542.

These no longer use PCI BAR 0 for I/O, but use that for memory.  In
other words, BAR 2 on SFN8xxx adapters now becomes BAR 0.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
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habetsm-xilinx authored and mcb30 committed Aug 26, 2018
1 parent d2063b7 commit af1860711a3823202a4ddee0ddfb9814591f506c
Showing 2 changed files with 11 additions and 3 deletions.
@@ -72,13 +72,19 @@ void efx_probe(struct net_device *netdev, enum efx_revision revision)
struct efx_nic *efx = netdev_priv(netdev);
struct pci_device *pci = container_of(netdev->dev,
struct pci_device, dev);
unsigned int reg = PCI_BASE_ADDRESS_0;
uint32_t bar_low;

efx->netdev = netdev;
efx->revision = revision;

/* MMIO bar */
efx->mmio_start = pci_bar_start(pci, PCI_BASE_ADDRESS_2);
efx->mmio_len = pci_bar_size(pci, PCI_BASE_ADDRESS_2);
/* Find the memory bar to use */
pci_read_config_dword(pci, reg, &bar_low);
if ((bar_low & PCI_BASE_ADDRESS_IO_MASK) == PCI_BASE_ADDRESS_SPACE_IO)
reg = PCI_BASE_ADDRESS_2;

efx->mmio_start = pci_bar_start(pci, reg);
efx->mmio_len = pci_bar_size(pci, reg);
efx->membase = ioremap(efx->mmio_start, efx->mmio_len);

DBGCP(efx, "BAR of %lx bytes at phys %lx mapped at %p\n",
@@ -142,6 +142,7 @@ static void hunt_mcdi_copyin(struct hunt_nic *hunt,
hdr_len = sizeof(hdr);

memcpy(pdu, &hdr, hdr_len);
assert(inlen <= MCDI_CTL_SDU_LEN_MAX_V2);
memcpy(pdu + hdr_len, inbuf, inlen);

wmb(); /* Sync the data before ringing the doorbell */
@@ -1314,6 +1315,7 @@ const struct efx_nic_type hunt_nic_type = {

static struct pci_device_id hunt_nics[] = {
PCI_ROM(0x1924, 0x0a03, "SFC9220", "Solarflare SFN8xxx Adapter", 0),
PCI_ROM(0x1924, 0x0b03, "SFC9250", "Solarflare X25xx Adapter", 0),
};

struct pci_driver hunt_driver __pci_driver = {

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