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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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