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sfc: Allow efx_mcdi_rpc to be called in two parts

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For NIC/System time synchonisation efx_mcdi_rpc needs to be split in
efx_mcdi_rpc_start and efx_mcdi_rpc_finish operations.

Signed-off-by: Stuart Hodgson <smhodgson@solarflare.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Stuart Hodgson 2012-07-16 17:40:47 +01:00 committed by Ben Hutchings
parent c31e5f9f97
commit c3cba721f1
2 changed files with 24 additions and 3 deletions
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21
drivers/net/ethernet/sfc/mcdi.c
View File

@ -320,14 +320,20 @@ static void efx_mcdi_ev_cpl(struct efx_nic *efx, unsigned int seqno,
efx_mcdi_complete(mcdi);
}
/* Issue the given command by writing the data into the shared memory PDU,
* ring the doorbell and wait for completion. Copyout the result. */
int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd,
const u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen,
size_t *outlen_actual)
{
efx_mcdi_rpc_start(efx, cmd, inbuf, inlen);
return efx_mcdi_rpc_finish(efx, cmd, inlen,
outbuf, outlen, outlen_actual);
}
void efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd, const u8 *inbuf,
size_t inlen)
{
struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
int rc;
BUG_ON(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
efx_mcdi_acquire(mcdi);
@ -338,6 +344,15 @@ int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd,
spin_unlock_bh(&mcdi->iface_lock);
efx_mcdi_copyin(efx, cmd, inbuf, inlen);
}
int efx_mcdi_rpc_finish(struct efx_nic *efx, unsigned cmd, size_t inlen,
u8 *outbuf, size_t outlen, size_t *outlen_actual)
{
struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
int rc;
BUG_ON(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
if (mcdi->mode == MCDI_MODE_POLL)
rc = efx_mcdi_poll(efx);

6
drivers/net/ethernet/sfc/mcdi.h
View File

@ -71,6 +71,12 @@ extern int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd, const u8 *inbuf,
size_t inlen, u8 *outbuf, size_t outlen,
size_t *outlen_actual);
extern void efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd,
const u8 *inbuf, size_t inlen);
extern int efx_mcdi_rpc_finish(struct efx_nic *efx, unsigned cmd, size_t inlen,
u8 *outbuf, size_t outlen,
size_t *outlen_actual);
extern int efx_mcdi_poll_reboot(struct efx_nic *efx);
extern void efx_mcdi_mode_poll(struct efx_nic *efx);
extern void efx_mcdi_mode_event(struct efx_nic *efx);