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| author | Sreenivasa Honnur <Sreenivasa.Honnur@neterion.com> | 2009-10-05 01:56:35 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-06 15:22:54 -0700 |
| commit | fa41fd10038ab575f043a62dace374e07e9193de (patch) | |
| tree | add9b20df4537b846f0571871d7e7d751d037dc5 | |
| parent | f0dfebafcc14a7456eb6ae974b68f600fdd8b42d (diff) | |
| download | linux-fa41fd10038ab575f043a62dace374e07e9193de.tar.gz linux-fa41fd10038ab575f043a62dace374e07e9193de.tar.bz2 linux-fa41fd10038ab575f043a62dace374e07e9193de.zip | |
vxge: Check if FCS stripping is disabled by the firmware.
- Added a function to check if FCS stripping is disabled by the firmware, if
it is not disabled fail driver load.
- By default FCS stripping is disabled by the firmware. With this assumption
driver decrements the indicated packet length by 4 bytes(FCS length).
- This patch ensures that FCS stripping is disabled during driver load time.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/vxge/vxge-config.c | 22 | ||||
| -rw-r--r-- | drivers/net/vxge/vxge-config.h | 2 | ||||
| -rw-r--r-- | drivers/net/vxge/vxge-main.c | 9 |
3 files changed, 33 insertions, 0 deletions
diff --git a/drivers/net/vxge/vxge-config.c b/drivers/net/vxge/vxge-config.c index 933237ec38d8..c07a7379cfa7 100644 --- a/drivers/net/vxge/vxge-config.c +++ b/drivers/net/vxge/vxge-config.c @@ -2157,6 +2157,28 @@ exit: } /* + * vxge_hw_vpath_strip_fcs_check - Check for FCS strip. + */ +enum vxge_hw_status +vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask) +{ + struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg; + enum vxge_hw_status status = VXGE_HW_OK; + int i = 0, j = 0; + + for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { + if (!((vpath_mask) & vxge_mBIT(i))) + continue; + vpmgmt_reg = hldev->vpmgmt_reg[i]; + for (j = 0; j < VXGE_HW_MAC_MAX_MAC_PORT_ID; j++) { + if (readq(&vpmgmt_reg->rxmac_cfg0_port_vpmgmt_clone[j]) + & VXGE_HW_RXMAC_CFG0_PORT_VPMGMT_CLONE_STRIP_FCS) + return VXGE_HW_FAIL; + } + } + return status; +} +/* * vxge_hw_mgmt_reg_Write - Write Titan register. */ enum vxge_hw_status diff --git a/drivers/net/vxge/vxge-config.h b/drivers/net/vxge/vxge-config.h index 3e94f0ce0900..e7877df092f3 100644 --- a/drivers/net/vxge/vxge-config.h +++ b/drivers/net/vxge/vxge-config.h @@ -2201,6 +2201,8 @@ __vxge_hw_vpath_func_id_get( enum vxge_hw_status __vxge_hw_vpath_reset_check(struct __vxge_hw_virtualpath *vpath); +enum vxge_hw_status +vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask); /** * vxge_debug * @level: level of debug verbosity. diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c index 7a851ac30c60..04ac4b6cf83a 100644 --- a/drivers/net/vxge/vxge-main.c +++ b/drivers/net/vxge/vxge-main.c @@ -4244,6 +4244,15 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre) goto _exit3; } + /* if FCS stripping is not disabled in MAC fail driver load */ + if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) { + vxge_debug_init(VXGE_ERR, + "%s: FCS stripping is not disabled in MAC" + " failing driver load", VXGE_DRIVER_NAME); + ret = -EINVAL; + goto _exit4; + } + vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); /* set private device info */ |