int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type,
loff_t offset, u8 *buffer, size_t length)
{
u8 inbuf[MC_CMD_NVRAM_READ_IN_LEN];
u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_TYPE, type);
MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_OFFSET, offset);
MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_LENGTH, length);
rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_READ, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
goto fail;
memcpy(buffer, MCDI_PTR(outbuf, NVRAM_READ_OUT_READ_BUFFER), length);
return 0;
fail:
netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
return rc;
}
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
__checkReturn int
siena_nvram_partn_read(
__in efx_nic_t *enp,
__in unsigned int partn,
__in unsigned int offset,
__out_bcount(size) caddr_t data,
__in size_t size)
{
efx_mcdi_req_t req;
uint8_t payload[MAX(MC_CMD_NVRAM_READ_IN_LEN,
MC_CMD_NVRAM_READ_OUT_LEN(SIENA_NVRAM_CHUNK))];
size_t chunk;
int rc;
while (size > 0) {
chunk = MIN(size, SIENA_NVRAM_CHUNK);
req.emr_cmd = MC_CMD_NVRAM_READ;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_NVRAM_READ_IN_LEN;
req.emr_out_buf = payload;
req.emr_out_length =
MC_CMD_NVRAM_READ_OUT_LEN(SIENA_NVRAM_CHUNK);
MCDI_IN_SET_DWORD(req, NVRAM_READ_IN_TYPE, partn);
MCDI_IN_SET_DWORD(req, NVRAM_READ_IN_OFFSET, offset);
