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Message-ID: <1496040794-6163-5-git-send-email-Yuval.Mintz@cavium.com>
Date: Mon, 29 May 2017 09:53:08 +0300
From: Yuval Mintz <Yuval.Mintz@...ium.com>
To: <davem@...emloft.net>, <netdev@...r.kernel.org>
CC: Yuval Mintz <Yuval.Mintz@...ium.com>
Subject: [PATCH v2 net-next 04/10] qed: QL41xxx VF MSI-x table
The QL41xxx adapters' PCI allows a single configuration for the
MSI-x table size of all child VFs of a given PF.
The existing code wouldn't cause the management firmware to set
that value, meaning the VFs would retain the default MSI-x table
size.
Introduce a new scheme so that whenever a VF is enabled, driver
would set the number of MSI-x to be the maximum over the various
VFs' needs.
Signed-off-by: Yuval Mintz <Yuval.Mintz@...ium.com>
---
drivers/net/ethernet/qlogic/qed/qed_hsi.h | 3 ++-
drivers/net/ethernet/qlogic/qed/qed_mcp.c | 35 +++++++++++++++++++++++++++--
drivers/net/ethernet/qlogic/qed/qed_sriov.c | 32 +++++++++++++++++++++++++-
3 files changed, 66 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_hsi.h b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
index 802c162..f610e52 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_hsi.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
@@ -11477,6 +11477,7 @@ struct public_drv_mb {
#define DRV_MSG_CODE_INITIATE_PF_FLR 0x02010000
#define DRV_MSG_CODE_VF_DISABLED_DONE 0xc0000000
#define DRV_MSG_CODE_CFG_VF_MSIX 0xc0010000
+#define DRV_MSG_CODE_CFG_PF_VFS_MSIX 0xc0020000
#define DRV_MSG_CODE_NVM_GET_FILE_ATT 0x00030000
#define DRV_MSG_CODE_NVM_READ_NVRAM 0x00050000
#define DRV_MSG_CODE_MCP_RESET 0x00090000
@@ -11640,7 +11641,7 @@ struct public_drv_mb {
#define FW_MSG_CODE_OS_WOL_SUPPORTED 0x00800000
#define FW_MSG_CODE_OS_WOL_NOT_SUPPORTED 0x00810000
-
+#define FW_MSG_CODE_DRV_CFG_PF_VFS_MSIX_DONE 0x00870000
#define FW_MSG_SEQ_NUMBER_MASK 0x0000ffff
u32 fw_mb_param;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
index fc49c75e..24c9b71 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
@@ -1801,8 +1801,9 @@ int qed_mcp_get_flash_size(struct qed_hwfn *p_hwfn,
return 0;
}
-int qed_mcp_config_vf_msix(struct qed_hwfn *p_hwfn,
- struct qed_ptt *p_ptt, u8 vf_id, u8 num)
+static int
+qed_mcp_config_vf_msix_bb(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt, u8 vf_id, u8 num)
{
u32 resp = 0, param = 0, rc_param = 0;
int rc;
@@ -1832,6 +1833,36 @@ int qed_mcp_config_vf_msix(struct qed_hwfn *p_hwfn,
return rc;
}
+static int
+qed_mcp_config_vf_msix_ah(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt, u8 num)
+{
+ u32 resp = 0, param = num, rc_param = 0;
+ int rc;
+
+ rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_CFG_PF_VFS_MSIX,
+ param, &resp, &rc_param);
+
+ if (resp != FW_MSG_CODE_DRV_CFG_PF_VFS_MSIX_DONE) {
+ DP_NOTICE(p_hwfn, "MFW failed to set MSI-X for VFs\n");
+ rc = -EINVAL;
+ } else {
+ DP_VERBOSE(p_hwfn, QED_MSG_IOV,
+ "Requested 0x%02x MSI-x interrupts for VFs\n", num);
+ }
+
+ return rc;
+}
+
+int qed_mcp_config_vf_msix(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt, u8 vf_id, u8 num)
+{
+ if (QED_IS_BB(p_hwfn->cdev))
+ return qed_mcp_config_vf_msix_bb(p_hwfn, p_ptt, vf_id, num);
+ else
+ return qed_mcp_config_vf_msix_ah(p_hwfn, p_ptt, num);
+}
+
int
qed_mcp_send_drv_version(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
index 71e392f..b6bda45d 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_sriov.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
@@ -747,6 +747,35 @@ static void qed_iov_vf_igu_set_int(struct qed_hwfn *p_hwfn,
qed_fid_pretend(p_hwfn, p_ptt, (u16) p_hwfn->hw_info.concrete_fid);
}
+static int
+qed_iov_enable_vf_access_msix(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt, u8 abs_vf_id, u8 num_sbs)
+{
+ u8 current_max = 0;
+ int i;
+
+ /* For AH onward, configuration is per-PF. Find maximum of all
+ * the currently enabled child VFs, and set the number to be that.
+ */
+ if (!QED_IS_BB(p_hwfn->cdev)) {
+ qed_for_each_vf(p_hwfn, i) {
+ struct qed_vf_info *p_vf;
+
+ p_vf = qed_iov_get_vf_info(p_hwfn, (u16)i, true);
+ if (!p_vf)
+ continue;
+
+ current_max = max_t(u8, current_max, p_vf->num_sbs);
+ }
+ }
+
+ if (num_sbs > current_max)
+ return qed_mcp_config_vf_msix(p_hwfn, p_ptt,
+ abs_vf_id, num_sbs);
+
+ return 0;
+}
+
static int qed_iov_enable_vf_access(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
struct qed_vf_info *vf)
@@ -771,7 +800,8 @@ static int qed_iov_enable_vf_access(struct qed_hwfn *p_hwfn,
qed_iov_vf_igu_reset(p_hwfn, p_ptt, vf);
- rc = qed_mcp_config_vf_msix(p_hwfn, p_ptt, vf->abs_vf_id, vf->num_sbs);
+ rc = qed_iov_enable_vf_access_msix(p_hwfn, p_ptt,
+ vf->abs_vf_id, vf->num_sbs);
if (rc)
return rc;
--
1.9.3
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