qlcnic: dcb: Get DCB parameters from the adapter.

o Populate driver data structures with local, operational, and peer
  DCB parameters.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 248 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_dcb.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_dcb.c
index 121e492f2f87..e43866f20bbb 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_dcb.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_dcb.c
@@ -5,9 +5,14 @@
  * See LICENSE.qlcnic for copyright and licensing details.
  */
 
+#include <linux/types.h>
 #include "qlcnic.h"
 
+#define QLC_DCB_NUM_PARAM               3
+
+#define QLC_DCB_FW_VER                  0x2
 #define QLC_DCB_MAX_TC                  0x8
+#define QLC_DCB_MAX_APP                 0x8
 
 #define QLC_DCB_TSA_SUPPORT(V)          (V & 0x1)
 #define QLC_DCB_ETS_SUPPORT(V)          ((V >> 1) & 0x1)
@@ -15,6 +20,29 @@
 #define QLC_DCB_MAX_NUM_TC(V)           ((V >> 20) & 0xf)
 #define QLC_DCB_MAX_NUM_ETS_TC(V)       ((V >> 24) & 0xf)
 #define QLC_DCB_MAX_NUM_PFC_TC(V)       ((V >> 28) & 0xf)
+#define QLC_DCB_GET_TC_PRIO(X, P)       ((X >> (P * 3)) & 0x7)
+#define QLC_DCB_GET_PGID_PRIO(X, P)     ((X >> (P * 8)) & 0xff)
+#define QLC_DCB_GET_BWPER_PG(X, P)      ((X >> (P * 8)) & 0xff)
+#define QLC_DCB_GET_TSA_PG(X, P)        ((X >> (P * 8)) & 0xff)
+#define QLC_DCB_GET_PFC_PRIO(X, P)      (((X >> 24) >> P) & 0x1)
+#define QLC_DCB_GET_PROTO_ID_APP(X)     ((X >> 8) & 0xffff)
+#define QLC_DCB_GET_SELECTOR_APP(X)     (X & 0xff)
+
+#define QLC_DCB_LOCAL_PARAM_FWID        0x3
+#define QLC_DCB_OPER_PARAM_FWID         0x1
+#define QLC_DCB_PEER_PARAM_FWID         0x2
+
+#define QLC_83XX_DCB_GET_NUMAPP(X)      ((X >> 2) & 0xf)
+#define QLC_83XX_DCB_TSA_VALID(X)       (X & 0x1)
+#define QLC_83XX_DCB_PFC_VALID(X)       ((X >> 1) & 0x1)
+#define QLC_83XX_DCB_GET_PRIOMAP_APP(X) (X >> 24)
+
+#define QLC_82XX_DCB_GET_NUMAPP(X)      ((X >> 12) & 0xf)
+#define QLC_82XX_DCB_TSA_VALID(X)       ((X >> 4) & 0x1)
+#define QLC_82XX_DCB_PFC_VALID(X)       ((X >> 5) & 0x1)
+#define QLC_82XX_DCB_GET_PRIOVAL_APP(X) ((X >> 24) & 0x7)
+#define QLC_82XX_DCB_GET_PRIOMAP_APP(X) (1 << X)
+#define QLC_82XX_DCB_PRIO_TC_MAP        (0x76543210)
 
 static void __qlcnic_dcb_free(struct qlcnic_adapter *);
 static int __qlcnic_dcb_attach(struct qlcnic_adapter *);
@@ -22,8 +50,12 @@ static int __qlcnic_dcb_query_hw_capability(struct qlcnic_adapter *, char *);
 static void __qlcnic_dcb_get_info(struct qlcnic_adapter *);
 
 static int qlcnic_82xx_dcb_get_hw_capability(struct qlcnic_adapter *);
+static int qlcnic_82xx_dcb_query_cee_param(struct qlcnic_adapter *, char *, u8);
+static int qlcnic_82xx_dcb_get_cee_cfg(struct qlcnic_adapter *);
 
 static int qlcnic_83xx_dcb_get_hw_capability(struct qlcnic_adapter *);
+static int qlcnic_83xx_dcb_query_cee_param(struct qlcnic_adapter *, char *, u8);
+static int qlcnic_83xx_dcb_get_cee_cfg(struct qlcnic_adapter *);
 
 struct qlcnic_dcb_capability {
         bool    tsa_capability;
@@ -34,6 +66,28 @@ struct qlcnic_dcb_capability {
         u8      dcb_capability;
 };
 
+struct qlcnic_dcb_param {
+        u32 hdr_prio_pfc_map[2];
+        u32 prio_pg_map[2];
+        u32 pg_bw_map[2];
+        u32 pg_tsa_map[2];
+        u32 app[QLC_DCB_MAX_APP];
+};
+
+struct qlcnic_dcb_mbx_params {
+        /* 1st local, 2nd operational 3rd remote */
+        struct qlcnic_dcb_param type[3];
+        u32 prio_tc_map;
+};
+
+struct qlcnic_82xx_dcb_param_mbx_le {
+        __le32 hdr_prio_pfc_map[2];
+        __le32 prio_pg_map[2];
+        __le32 pg_bw_map[2];
+        __le32 pg_tsa_map[2];
+        __le32 app[QLC_DCB_MAX_APP];
+};
+
 struct qlcnic_dcb_cfg {
         struct qlcnic_dcb_capability capability;
         u32 version;
@@ -46,6 +100,8 @@ static struct qlcnic_dcb_ops qlcnic_83xx_dcb_ops = {
         .get_info               = __qlcnic_dcb_get_info,
 
         .get_hw_capability      = qlcnic_83xx_dcb_get_hw_capability,
+        .query_cee_param        = qlcnic_83xx_dcb_query_cee_param,
+        .get_cee_cfg            = qlcnic_83xx_dcb_get_cee_cfg,
 };
 
 static struct qlcnic_dcb_ops qlcnic_82xx_dcb_ops = {
@@ -55,8 +111,18 @@ static struct qlcnic_dcb_ops qlcnic_82xx_dcb_ops = {
         .get_info               = __qlcnic_dcb_get_info,
 
         .get_hw_capability      = qlcnic_82xx_dcb_get_hw_capability,
+        .query_cee_param        = qlcnic_82xx_dcb_query_cee_param,
+        .get_cee_cfg            = qlcnic_82xx_dcb_get_cee_cfg,
 };
 
+static u8 qlcnic_dcb_get_num_app(struct qlcnic_adapter *adapter, u32 val)
+{
+        if (qlcnic_82xx_check(adapter))
+                return QLC_82XX_DCB_GET_NUMAPP(val);
+        else
+                return QLC_83XX_DCB_GET_NUMAPP(val);
+}
+
 void qlcnic_set_dcb_ops(struct qlcnic_adapter *adapter)
 {
         if (qlcnic_82xx_check(adapter))
@@ -88,6 +154,8 @@ static void __qlcnic_dcb_free(struct qlcnic_adapter *adapter)
 
         kfree(dcb->cfg);
         dcb->cfg = NULL;
+        kfree(dcb->param);
+        dcb->param = NULL;
         kfree(dcb);
         adapter->dcb = NULL;
 }
@@ -95,19 +163,32 @@ static void __qlcnic_dcb_free(struct qlcnic_adapter *adapter)
 static void __qlcnic_dcb_get_info(struct qlcnic_adapter *adapter)
 {
         qlcnic_dcb_get_hw_capability(adapter);
+        qlcnic_dcb_get_cee_cfg(adapter);
 }
 
 static int __qlcnic_dcb_attach(struct qlcnic_adapter *adapter)
 {
         struct qlcnic_dcb *dcb = adapter->dcb;
+        int err = 0;
 
         dcb->cfg = kzalloc(sizeof(struct qlcnic_dcb_cfg), GFP_ATOMIC);
         if (!dcb->cfg)
                 return -ENOMEM;
 
+        dcb->param = kzalloc(sizeof(struct qlcnic_dcb_mbx_params), GFP_ATOMIC);
+        if (!dcb->param) {
+                err = -ENOMEM;
+                goto out_free_cfg;
+        }
+
         qlcnic_dcb_get_info(adapter);
 
         return 0;
+out_free_cfg:
+        kfree(dcb->cfg);
+        dcb->cfg = NULL;
+
+        return err;
 }
 
 static int __qlcnic_dcb_query_hw_capability(struct qlcnic_adapter *adapter,
@@ -189,6 +270,104 @@ static int qlcnic_82xx_dcb_get_hw_capability(struct qlcnic_adapter *adapter)
         return err;
 }
 
+static int qlcnic_82xx_dcb_query_cee_param(struct qlcnic_adapter *adapter,
+                                           char *buf, u8 type)
+{
+        u16 size = sizeof(struct qlcnic_82xx_dcb_param_mbx_le);
+        struct qlcnic_82xx_dcb_param_mbx_le *prsp_le;
+        struct device *dev = &adapter->pdev->dev;
+        dma_addr_t cardrsp_phys_addr;
+        struct qlcnic_dcb_param rsp;
+        struct qlcnic_cmd_args cmd;
+        u64 phys_addr;
+        void *addr;
+        int err, i;
+
+        switch (type) {
+        case QLC_DCB_LOCAL_PARAM_FWID:
+        case QLC_DCB_OPER_PARAM_FWID:
+        case QLC_DCB_PEER_PARAM_FWID:
+                break;
+        default:
+                dev_err(dev, "Invalid parameter type %d\n", type);
+                return -EINVAL;
+        }
+
+        addr = dma_alloc_coherent(&adapter->pdev->dev, size, &cardrsp_phys_addr,
+                                  GFP_KERNEL);
+        if (addr == NULL)
+                return -ENOMEM;
+
+        prsp_le = addr;
+
+        err = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_DCB_QUERY_PARAM);
+        if (err)
+                goto out_free_rsp;
+
+        phys_addr = cardrsp_phys_addr;
+        cmd.req.arg[1] = size | (type << 16);
+        cmd.req.arg[2] = MSD(phys_addr);
+        cmd.req.arg[3] = LSD(phys_addr);
+
+        err = qlcnic_issue_cmd(adapter, &cmd);
+        if (err) {
+                dev_err(dev, "Failed to query DCBX parameter, err %d\n", err);
+                goto out;
+        }
+
+        memset(&rsp, 0, sizeof(struct qlcnic_dcb_param));
+        rsp.hdr_prio_pfc_map[0] = le32_to_cpu(prsp_le->hdr_prio_pfc_map[0]);
+        rsp.hdr_prio_pfc_map[1] = le32_to_cpu(prsp_le->hdr_prio_pfc_map[1]);
+        rsp.prio_pg_map[0] = le32_to_cpu(prsp_le->prio_pg_map[0]);
+        rsp.prio_pg_map[1] = le32_to_cpu(prsp_le->prio_pg_map[1]);
+        rsp.pg_bw_map[0] = le32_to_cpu(prsp_le->pg_bw_map[0]);
+        rsp.pg_bw_map[1] = le32_to_cpu(prsp_le->pg_bw_map[1]);
+        rsp.pg_tsa_map[0] = le32_to_cpu(prsp_le->pg_tsa_map[0]);
+        rsp.pg_tsa_map[1] = le32_to_cpu(prsp_le->pg_tsa_map[1]);
+
+        for (i = 0; i < QLC_DCB_MAX_APP; i++)
+                rsp.app[i] = le32_to_cpu(prsp_le->app[i]);
+
+        if (buf)
+                memcpy(buf, &rsp, size);
+out:
+        qlcnic_free_mbx_args(&cmd);
+
+out_free_rsp:
+        dma_free_coherent(&adapter->pdev->dev, size, addr, cardrsp_phys_addr);
+
+        return err;
+}
+
+static int qlcnic_82xx_dcb_get_cee_cfg(struct qlcnic_adapter *adapter)
+{
+        struct qlcnic_dcb_mbx_params *mbx;
+        int err;
+
+        mbx = adapter->dcb->param;
+        if (!mbx)
+                return 0;
+
+        err = qlcnic_dcb_query_cee_param(adapter, (char *)&mbx->type[0],
+                                         QLC_DCB_LOCAL_PARAM_FWID);
+        if (err)
+                return err;
+
+        err = qlcnic_dcb_query_cee_param(adapter, (char *)&mbx->type[1],
+                                         QLC_DCB_OPER_PARAM_FWID);
+        if (err)
+                return err;
+
+        err = qlcnic_dcb_query_cee_param(adapter, (char *)&mbx->type[2],
+                                         QLC_DCB_PEER_PARAM_FWID);
+        if (err)
+                return err;
+
+        mbx->prio_tc_map = QLC_82XX_DCB_PRIO_TC_MAP;
+
+        return err;
+}
+
 static int qlcnic_83xx_dcb_get_hw_capability(struct qlcnic_adapter *adapter)
 {
         struct qlcnic_dcb_capability *cap = &adapter->dcb->cfg->capability;
@@ -211,3 +390,72 @@ static int qlcnic_83xx_dcb_get_hw_capability(struct qlcnic_adapter *adapter)
 
         return err;
 }
+
+static int qlcnic_83xx_dcb_query_cee_param(struct qlcnic_adapter *adapter,
+                                           char *buf, u8 idx)
+{
+        struct qlcnic_dcb_mbx_params mbx_out;
+        int err, i, j, k, max_app, size;
+        struct qlcnic_dcb_param *each;
+        struct qlcnic_cmd_args cmd;
+        u32 val;
+        char *p;
+
+        size = 0;
+        memset(&mbx_out, 0, sizeof(struct qlcnic_dcb_mbx_params));
+        memset(buf, 0, sizeof(struct qlcnic_dcb_mbx_params));
+
+        err = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_DCB_QUERY_PARAM);
+        if (err)
+                return err;
+
+        cmd.req.arg[0] |= QLC_DCB_FW_VER << 29;
+        err = qlcnic_issue_cmd(adapter, &cmd);
+        if (err) {
+                dev_err(&adapter->pdev->dev,
+                        "Failed to query DCBX param, err %d\n", err);
+                goto out;
+        }
+
+        mbx_out.prio_tc_map = cmd.rsp.arg[1];
+        p = memcpy(buf, &mbx_out, sizeof(u32));
+        k = 2;
+        p += sizeof(u32);
+
+        for (j = 0; j < QLC_DCB_NUM_PARAM; j++) {
+                each = &mbx_out.type[j];
+
+                each->hdr_prio_pfc_map[0] = cmd.rsp.arg[k++];
+                each->hdr_prio_pfc_map[1] = cmd.rsp.arg[k++];
+                each->prio_pg_map[0] = cmd.rsp.arg[k++];
+                each->prio_pg_map[1] = cmd.rsp.arg[k++];
+                each->pg_bw_map[0] = cmd.rsp.arg[k++];
+                each->pg_bw_map[1] = cmd.rsp.arg[k++];
+                each->pg_tsa_map[0] = cmd.rsp.arg[k++];
+                each->pg_tsa_map[1] = cmd.rsp.arg[k++];
+                val = each->hdr_prio_pfc_map[0];
+
+                max_app = qlcnic_dcb_get_num_app(adapter, val);
+                for (i = 0; i < max_app; i++)
+                        each->app[i] = cmd.rsp.arg[i + k];
+
+                size = 16 * sizeof(u32);
+                memcpy(p, &each->hdr_prio_pfc_map[0], size);
+                p += size;
+                if (j == 0)
+                        k = 18;
+                else
+                        k = 34;
+        }
+out:
+        qlcnic_free_mbx_args(&cmd);
+
+        return err;
+}
+
+static int qlcnic_83xx_dcb_get_cee_cfg(struct qlcnic_adapter *adapter)
+{
+        struct qlcnic_dcb *dcb = adapter->dcb;
+
+        return qlcnic_dcb_query_cee_param(adapter, (char *)dcb->param, 0);
+}