Commit 66a65128 authored by Edward Cree's avatar Edward Cree Committed by David S. Miller

sfc: track which BAR is mapped

EF100 needs to map multiple BARs (sequentially, not concurrently) in
 order to read the Function Control Window during probe.
Signed-off-by: default avatarEdward Cree <ecree@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 53e1f21a
......@@ -1074,7 +1074,7 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
efx_pci_remove_main(efx);
efx_fini_io(efx, efx->type->mem_bar(efx));
efx_fini_io(efx);
netif_dbg(efx, drv, efx->net_dev, "shutdown successful\n");
efx_fini_struct(efx);
......@@ -1342,7 +1342,7 @@ static int efx_pci_probe(struct pci_dev *pci_dev,
return 0;
fail3:
efx_fini_io(efx, efx->type->mem_bar(efx));
efx_fini_io(efx);
fail2:
efx_fini_struct(efx);
fail1:
......
......@@ -953,6 +953,8 @@ int efx_init_struct(struct efx_nic *efx,
INIT_WORK(&efx->mac_work, efx_mac_work);
init_waitqueue_head(&efx->flush_wq);
efx->mem_bar = UINT_MAX;
rc = efx_init_channels(efx);
if (rc)
goto fail;
......@@ -996,7 +998,9 @@ int efx_init_io(struct efx_nic *efx, int bar, dma_addr_t dma_mask,
struct pci_dev *pci_dev = efx->pci_dev;
int rc;
netif_dbg(efx, probe, efx->net_dev, "initialising I/O\n");
efx->mem_bar = UINT_MAX;
netif_dbg(efx, probe, efx->net_dev, "initialising I/O bar=%d\n", bar);
rc = pci_enable_device(pci_dev);
if (rc) {
......@@ -1038,21 +1042,21 @@ int efx_init_io(struct efx_nic *efx, int bar, dma_addr_t dma_mask,
rc = pci_request_region(pci_dev, bar, "sfc");
if (rc) {
netif_err(efx, probe, efx->net_dev,
"request for memory BAR failed\n");
"request for memory BAR[%d] failed\n", bar);
rc = -EIO;
goto fail3;
}
efx->mem_bar = bar;
efx->membase = ioremap(efx->membase_phys, mem_map_size);
if (!efx->membase) {
netif_err(efx, probe, efx->net_dev,
"could not map memory BAR at %llx+%x\n",
"could not map memory BAR[%d] at %llx+%x\n", bar,
(unsigned long long)efx->membase_phys, mem_map_size);
rc = -ENOMEM;
goto fail4;
}
netif_dbg(efx, probe, efx->net_dev,
"memory BAR at %llx+%x (virtual %p)\n",
"memory BAR[%d] at %llx+%x (virtual %p)\n", bar,
(unsigned long long)efx->membase_phys, mem_map_size,
efx->membase);
......@@ -1068,7 +1072,7 @@ int efx_init_io(struct efx_nic *efx, int bar, dma_addr_t dma_mask,
return rc;
}
void efx_fini_io(struct efx_nic *efx, int bar)
void efx_fini_io(struct efx_nic *efx)
{
netif_dbg(efx, drv, efx->net_dev, "shutting down I/O\n");
......@@ -1078,8 +1082,9 @@ void efx_fini_io(struct efx_nic *efx, int bar)
}
if (efx->membase_phys) {
pci_release_region(efx->pci_dev, bar);
pci_release_region(efx->pci_dev, efx->mem_bar);
efx->membase_phys = 0;
efx->mem_bar = UINT_MAX;
}
/* Don't disable bus-mastering if VFs are assigned */
......
......@@ -13,7 +13,7 @@
int efx_init_io(struct efx_nic *efx, int bar, dma_addr_t dma_mask,
unsigned int mem_map_size);
void efx_fini_io(struct efx_nic *efx, int bar);
void efx_fini_io(struct efx_nic *efx);
int efx_init_struct(struct efx_nic *efx, struct pci_dev *pci_dev,
struct net_device *net_dev);
void efx_fini_struct(struct efx_nic *efx);
......
......@@ -961,6 +961,7 @@ struct efx_async_filter_insertion {
* @vpd_sn: Serial number read from VPD
* @xdp_rxq_info_failed: Have any of the rx queues failed to initialise their
* xdp_rxq_info structures?
* @mem_bar: The BAR that is mapped into membase.
* @monitor_work: Hardware monitor workitem
* @biu_lock: BIU (bus interface unit) lock
* @last_irq_cpu: Last CPU to handle a possible test interrupt. This
......@@ -1137,6 +1138,8 @@ struct efx_nic {
char *vpd_sn;
bool xdp_rxq_info_failed;
unsigned int mem_bar;
/* The following fields may be written more often */
struct delayed_work monitor_work ____cacheline_aligned_in_smp;
......
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