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authorBen Hutchings <bhutchings@solarflare.com>2012-09-11 21:46:41 +0100
committerBen Hutchings <bhutchings@solarflare.com>2012-10-02 01:58:40 +0100
commit0a6e5008a9df678b48f8d4e57601aa4270df6c14 (patch)
tree42b1fdd0cee106cbbca7ba0fa20503255a90b800 /drivers
parent9724a8504c875145f5a513bb8eca50671cee23b4 (diff)
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sfc: Fix MCDI structure field lookup
The least significant bit number (LBN) of a field within an MCDI structure is counted from the start of the structure, not the containing dword. In MCDI_ARRAY_FIELD() we need to mask it rather than using the usual EFX_DWORD_FIELD() macro. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/sfc/mcdi.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index dc25caaa3983..3ba2e5b5a9cc 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -113,11 +113,13 @@ extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
#define MCDI_EVENT_FIELD(_ev, _field) \
EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
- EFX_DWORD_FIELD( \
+ EFX_EXTRACT_DWORD( \
*((efx_dword_t *) \
(MCDI_ARRAY_PTR(_buf, _field1, _type, _index) + \
(MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _OFST & ~3))), \
- MC_CMD_ ## _type ## _TYPEDEF_ ## _field2)
+ MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _LBN & 0x1f, \
+ (MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _LBN & 0x1f) + \
+ MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _WIDTH - 1)
extern void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
extern int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,