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sfc: Rationalise MCDI buffer accessors 

Add _MCDI_DWORD() which yields an lvalue for the given dword field
and change MCDI_DWORD(), MCDI_SET_DWORD() and MCDI_QWORD() to use it.

Fold the rather trivial MCDI_PTR2() into MCDI_PTR() and _MCDI_DWORD().

Remove MCDI_SET_DWORD2() and MCDI_QWORD2().  MCDI_DWORD2() should also
go, but it still has one user which we'll get rid of later.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2012-09-14 17:30:44 +01:00
parent 59cfc479b2
commit 30af691066
1 changed files with 19 additions and 25 deletions
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44
drivers/net/ethernet/sfc/mcdi.h
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@ -87,34 +87,25 @@ extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
#define MCDI_DECLARE_BUF(_name, _len) \
u8 _name[ALIGN(_len, 4)]
#define MCDI_PTR(_buf, _field) \
((u8 *)(_buf) + MC_CMD_ ## _field ## _OFST)
#define _MCDI_DWORD(_buf, _field) \
((efx_dword_t *)MCDI_PTR(_buf, _field))
#define MCDI_PTR2(_buf, _ofst) \
(((u8 *)_buf) + _ofst)
#define MCDI_SET_DWORD2(_buf, _ofst, _value) \
EFX_POPULATE_DWORD_1(*((efx_dword_t *)MCDI_PTR2(_buf, _ofst)), \
EFX_DWORD_0, _value)
#define MCDI_DWORD2(_buf, _ofst) \
EFX_DWORD_FIELD(*((efx_dword_t *)MCDI_PTR2(_buf, _ofst)), \
EFX_DWORD_0)
#define MCDI_QWORD2(_buf, _ofst) \
EFX_QWORD_FIELD64(*((efx_qword_t *)MCDI_PTR2(_buf, _ofst)), \
EFX_QWORD_0)
#define MCDI_DWORD2(_buf, _ofst) \
EFX_DWORD_FIELD(*(efx_dword_t *)((u8 *)(_buf) + (_ofst)), EFX_DWORD_0)
#define MCDI_SET_DWORD(_buf, _field, _value) \
EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0, _value)
#define MCDI_DWORD(_buf, _field) \
EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
#define MCDI_QWORD(_buf, _field) \
(EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) | \
(u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
#define MCDI_PTR(_buf, _ofst) \
MCDI_PTR2(_buf, MC_CMD_ ## _ofst ## _OFST)
#define MCDI_ARRAY_PTR(_buf, _field, _type, _index) \
MCDI_PTR2(_buf, \
MC_CMD_ ## _field ## _OFST + \
(_index) * MC_CMD_ ## _type ## _TYPEDEF_LEN)
#define MCDI_SET_DWORD(_buf, _ofst, _value) \
MCDI_SET_DWORD2(_buf, MC_CMD_ ## _ofst ## _OFST, _value)
#define MCDI_DWORD(_buf, _ofst) \
MCDI_DWORD2(_buf, MC_CMD_ ## _ofst ## _OFST)
#define MCDI_QWORD(_buf, _ofst) \
MCDI_QWORD2(_buf, MC_CMD_ ## _ofst ## _OFST)
#define MCDI_EVENT_FIELD(_ev, _field) \
EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
(MCDI_PTR(_buf, _field) + \
(_index) * MC_CMD_ ## _type ## _TYPEDEF_LEN)
#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
EFX_EXTRACT_DWORD( \
*((efx_dword_t *) \
@ -124,6 +115,9 @@ extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
(MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _LBN & 0x1f) + \
MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _WIDTH - 1)
#define MCDI_EVENT_FIELD(_ev, _field) \
EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
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,
bool *was_attached_out);