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sfc: make mem_bar a function rather than a constant 

Support using BAR 0 on SFC9250, even though the driver doesn't bind to such
 devices yet.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2017-12-18 16:55:50 +00:00 committed by David S. Miller
parent 59436c9ee1
commit 03714bbb22
5 changed files with 35 additions and 12 deletions
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26
drivers/net/ethernet/sfc/ef10.c
View File

@ -160,11 +160,31 @@ static int efx_ef10_get_warm_boot_count(struct efx_nic *efx)
EFX_DWORD_FIELD(reg, EFX_WORD_0) : -EIO;
}
/* On all EF10s up to and including SFC9220 (Medford1), all PFs use BAR 0 for
* I/O space and BAR 2(&3) for memory. On SFC9250 (Medford2), there is no I/O
* bar; PFs use BAR 0/1 for memory.
*/
static unsigned int efx_ef10_pf_mem_bar(struct efx_nic *efx)
{
switch (efx->pci_dev->device) {
case 0x0b03: /* SFC9250 PF */
return 0;
default:
return 2;
}
}
/* All VFs use BAR 0/1 for memory */
static unsigned int efx_ef10_vf_mem_bar(struct efx_nic *efx)
{
return 0;
}
static unsigned int efx_ef10_mem_map_size(struct efx_nic *efx)
{
int bar;
bar = efx->type->mem_bar;
bar = efx->type->mem_bar(efx);
return resource_size(&efx->pci_dev->resource[bar]);
}
@ -6392,7 +6412,7 @@ out_unlock:
const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
.is_vf = true,
.mem_bar = EFX_MEM_VF_BAR,
.mem_bar = efx_ef10_vf_mem_bar,
.mem_map_size = efx_ef10_mem_map_size,
.probe = efx_ef10_probe_vf,
.remove = efx_ef10_remove,
@ -6500,7 +6520,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
const struct efx_nic_type efx_hunt_a0_nic_type = {
.is_vf = false,
.mem_bar = EFX_MEM_BAR,
.mem_bar = efx_ef10_pf_mem_bar,
.mem_map_size = efx_ef10_mem_map_size,
.probe = efx_ef10_probe_pf,
.remove = efx_ef10_remove,

4
drivers/net/ethernet/sfc/efx.c
View File

@ -1248,7 +1248,7 @@ static int efx_init_io(struct efx_nic *efx)
netif_dbg(efx, probe, efx->net_dev, "initialising I/O\n");
bar = efx->type->mem_bar;
bar = efx->type->mem_bar(efx);
rc = pci_enable_device(pci_dev);
if (rc) {
@ -1323,7 +1323,7 @@ static void efx_fini_io(struct efx_nic *efx)
}
if (efx->membase_phys) {
bar = efx->type->mem_bar;
bar = efx->type->mem_bar(efx);
pci_release_region(efx->pci_dev, bar);
efx->membase_phys = 0;
}

5
drivers/net/ethernet/sfc/efx.h
View File

@ -14,11 +14,6 @@
#include "net_driver.h"
#include "filter.h"
/* All controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
/* All VFs use BAR 0/1 for memory */
#define EFX_MEM_BAR 2
#define EFX_MEM_VF_BAR 0
int efx_net_open(struct net_device *net_dev);
int efx_net_stop(struct net_device *net_dev);

2
drivers/net/ethernet/sfc/net_driver.h
View File

@ -1154,7 +1154,7 @@ struct efx_udp_tunnel {
*/
struct efx_nic_type {
bool is_vf;
unsigned int mem_bar;
unsigned int (*mem_bar)(struct efx_nic *efx);
unsigned int (*mem_map_size)(struct efx_nic *efx);
int (*probe)(struct efx_nic *efx);
void (*remove)(struct efx_nic *efx);

10
drivers/net/ethernet/sfc/siena.c
View File

@ -242,6 +242,14 @@ static int siena_dimension_resources(struct efx_nic *efx)
return 0;
}
/* On all Falcon-architecture NICs, PFs use BAR 0 for I/O space and BAR 2(&3)
* for memory.
*/
static unsigned int siena_mem_bar(struct efx_nic *efx)
{
return 2;
}
static unsigned int siena_mem_map_size(struct efx_nic *efx)
{
return FR_CZ_MC_TREG_SMEM +
@ -950,7 +958,7 @@ fail:
const struct efx_nic_type siena_a0_nic_type = {
.is_vf = false,
.mem_bar = EFX_MEM_BAR,
.mem_bar = siena_mem_bar,
.mem_map_size = siena_mem_map_size,
.probe = siena_probe_nic,
.remove = siena_remove_nic,