Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-drm-fsl-dcu.git] / drivers / net / ethernet / chelsio / cxgb4 / t4_hw.c
index 4cbb2f9850be554c9ec48afd7479b4fcd9e5ebc2..e1413eacdbd20ab2233fd3217222bb76e6b779d1 100644 (file)
@@ -296,7 +296,7 @@ int t4_mc_read(struct adapter *adap, int idx, u32 addr, __be32 *data, u64 *ecc)
        u32 mc_bist_cmd, mc_bist_cmd_addr, mc_bist_cmd_len;
        u32 mc_bist_status_rdata, mc_bist_data_pattern;
 
-       if (is_t4(adap->chip)) {
+       if (is_t4(adap->params.chip)) {
                mc_bist_cmd = MC_BIST_CMD;
                mc_bist_cmd_addr = MC_BIST_CMD_ADDR;
                mc_bist_cmd_len = MC_BIST_CMD_LEN;
@@ -349,7 +349,7 @@ int t4_edc_read(struct adapter *adap, int idx, u32 addr, __be32 *data, u64 *ecc)
        u32 edc_bist_cmd, edc_bist_cmd_addr, edc_bist_cmd_len;
        u32 edc_bist_cmd_data_pattern, edc_bist_status_rdata;
 
-       if (is_t4(adap->chip)) {
+       if (is_t4(adap->params.chip)) {
                edc_bist_cmd = EDC_REG(EDC_BIST_CMD, idx);
                edc_bist_cmd_addr = EDC_REG(EDC_BIST_CMD_ADDR, idx);
                edc_bist_cmd_len = EDC_REG(EDC_BIST_CMD_LEN, idx);
@@ -402,7 +402,7 @@ int t4_edc_read(struct adapter *adap, int idx, u32 addr, __be32 *data, u64 *ecc)
 static int t4_mem_win_rw(struct adapter *adap, u32 addr, __be32 *data, int dir)
 {
        int i;
-       u32 win_pf = is_t4(adap->chip) ? 0 : V_PFNUM(adap->fn);
+       u32 win_pf = is_t4(adap->params.chip) ? 0 : V_PFNUM(adap->fn);
 
        /*
         * Setup offset into PCIE memory window.  Address must be a
@@ -863,104 +863,169 @@ unlock:
 }
 
 /**
- *     get_fw_version - read the firmware version
+ *     t4_get_fw_version - read the firmware version
  *     @adapter: the adapter
  *     @vers: where to place the version
  *
  *     Reads the FW version from flash.
  */
-static int get_fw_version(struct adapter *adapter, u32 *vers)
+int t4_get_fw_version(struct adapter *adapter, u32 *vers)
 {
-       return t4_read_flash(adapter, adapter->params.sf_fw_start +
-                            offsetof(struct fw_hdr, fw_ver), 1, vers, 0);
+       return t4_read_flash(adapter, FLASH_FW_START +
+                            offsetof(struct fw_hdr, fw_ver), 1,
+                            vers, 0);
 }
 
 /**
- *     get_tp_version - read the TP microcode version
+ *     t4_get_tp_version - read the TP microcode version
  *     @adapter: the adapter
  *     @vers: where to place the version
  *
  *     Reads the TP microcode version from flash.
  */
-static int get_tp_version(struct adapter *adapter, u32 *vers)
+int t4_get_tp_version(struct adapter *adapter, u32 *vers)
 {
-       return t4_read_flash(adapter, adapter->params.sf_fw_start +
+       return t4_read_flash(adapter, FLASH_FW_START +
                             offsetof(struct fw_hdr, tp_microcode_ver),
                             1, vers, 0);
 }
 
-/**
- *     t4_check_fw_version - check if the FW is compatible with this driver
- *     @adapter: the adapter
- *
- *     Checks if an adapter's FW is compatible with the driver.  Returns 0
- *     if there's exact match, a negative error if the version could not be
- *     read or there's a major version mismatch, and a positive value if the
- *     expected major version is found but there's a minor version mismatch.
+/* Is the given firmware API compatible with the one the driver was compiled
+ * with?
  */
-int t4_check_fw_version(struct adapter *adapter)
+static int fw_compatible(const struct fw_hdr *hdr1, const struct fw_hdr *hdr2)
 {
-       u32 api_vers[2];
-       int ret, major, minor, micro;
-       int exp_major, exp_minor, exp_micro;
 
-       ret = get_fw_version(adapter, &adapter->params.fw_vers);
-       if (!ret)
-               ret = get_tp_version(adapter, &adapter->params.tp_vers);
-       if (!ret)
-               ret = t4_read_flash(adapter, adapter->params.sf_fw_start +
-                                   offsetof(struct fw_hdr, intfver_nic),
-                                   2, api_vers, 1);
-       if (ret)
-               return ret;
+       /* short circuit if it's the exact same firmware version */
+       if (hdr1->chip == hdr2->chip && hdr1->fw_ver == hdr2->fw_ver)
+               return 1;
 
-       major = FW_HDR_FW_VER_MAJOR_GET(adapter->params.fw_vers);
-       minor = FW_HDR_FW_VER_MINOR_GET(adapter->params.fw_vers);
-       micro = FW_HDR_FW_VER_MICRO_GET(adapter->params.fw_vers);
+#define SAME_INTF(x) (hdr1->intfver_##x == hdr2->intfver_##x)
+       if (hdr1->chip == hdr2->chip && SAME_INTF(nic) && SAME_INTF(vnic) &&
+           SAME_INTF(ri) && SAME_INTF(iscsi) && SAME_INTF(fcoe))
+               return 1;
+#undef SAME_INTF
 
-       switch (CHELSIO_CHIP_VERSION(adapter->chip)) {
-       case CHELSIO_T4:
-               exp_major = FW_VERSION_MAJOR;
-               exp_minor = FW_VERSION_MINOR;
-               exp_micro = FW_VERSION_MICRO;
-               break;
-       case CHELSIO_T5:
-               exp_major = FW_VERSION_MAJOR_T5;
-               exp_minor = FW_VERSION_MINOR_T5;
-               exp_micro = FW_VERSION_MICRO_T5;
-               break;
-       default:
-               dev_err(adapter->pdev_dev, "Unsupported chip type, %x\n",
-                       adapter->chip);
-               return -EINVAL;
-       }
+       return 0;
+}
 
-       memcpy(adapter->params.api_vers, api_vers,
-              sizeof(adapter->params.api_vers));
+/* The firmware in the filesystem is usable, but should it be installed?
+ * This routine explains itself in detail if it indicates the filesystem
+ * firmware should be installed.
+ */
+static int should_install_fs_fw(struct adapter *adap, int card_fw_usable,
+                               int k, int c)
+{
+       const char *reason;
 
-       if (major < exp_major || (major == exp_major && minor < exp_minor) ||
-           (major == exp_major && minor == exp_minor && micro < exp_micro)) {
-               dev_err(adapter->pdev_dev,
-                       "Card has firmware version %u.%u.%u, minimum "
-                       "supported firmware is %u.%u.%u.\n", major, minor,
-                       micro, exp_major, exp_minor, exp_micro);
-               return -EFAULT;
+       if (!card_fw_usable) {
+               reason = "incompatible or unusable";
+               goto install;
        }
 
-       if (major != exp_major) {            /* major mismatch - fail */
-               dev_err(adapter->pdev_dev,
-                       "card FW has major version %u, driver wants %u\n",
-                       major, exp_major);
-               return -EINVAL;
+       if (k > c) {
+               reason = "older than the version supported with this driver";
+               goto install;
        }
 
-       if (minor == exp_minor && micro == exp_micro)
-               return 0;                                   /* perfect match */
+       return 0;
+
+install:
+       dev_err(adap->pdev_dev, "firmware on card (%u.%u.%u.%u) is %s, "
+               "installing firmware %u.%u.%u.%u on card.\n",
+               FW_HDR_FW_VER_MAJOR_GET(c), FW_HDR_FW_VER_MINOR_GET(c),
+               FW_HDR_FW_VER_MICRO_GET(c), FW_HDR_FW_VER_BUILD_GET(c), reason,
+               FW_HDR_FW_VER_MAJOR_GET(k), FW_HDR_FW_VER_MINOR_GET(k),
+               FW_HDR_FW_VER_MICRO_GET(k), FW_HDR_FW_VER_BUILD_GET(k));
 
-       /* Minor/micro version mismatch.  Report it but often it's OK. */
        return 1;
 }
 
+int t4_prep_fw(struct adapter *adap, struct fw_info *fw_info,
+              const u8 *fw_data, unsigned int fw_size,
+              struct fw_hdr *card_fw, enum dev_state state,
+              int *reset)
+{
+       int ret, card_fw_usable, fs_fw_usable;
+       const struct fw_hdr *fs_fw;
+       const struct fw_hdr *drv_fw;
+
+       drv_fw = &fw_info->fw_hdr;
+
+       /* Read the header of the firmware on the card */
+       ret = -t4_read_flash(adap, FLASH_FW_START,
+                           sizeof(*card_fw) / sizeof(uint32_t),
+                           (uint32_t *)card_fw, 1);
+       if (ret == 0) {
+               card_fw_usable = fw_compatible(drv_fw, (const void *)card_fw);
+       } else {
+               dev_err(adap->pdev_dev,
+                       "Unable to read card's firmware header: %d\n", ret);
+               card_fw_usable = 0;
+       }
+
+       if (fw_data != NULL) {
+               fs_fw = (const void *)fw_data;
+               fs_fw_usable = fw_compatible(drv_fw, fs_fw);
+       } else {
+               fs_fw = NULL;
+               fs_fw_usable = 0;
+       }
+
+       if (card_fw_usable && card_fw->fw_ver == drv_fw->fw_ver &&
+           (!fs_fw_usable || fs_fw->fw_ver == drv_fw->fw_ver)) {
+               /* Common case: the firmware on the card is an exact match and
+                * the filesystem one is an exact match too, or the filesystem
+                * one is absent/incompatible.
+                */
+       } else if (fs_fw_usable && state == DEV_STATE_UNINIT &&
+                  should_install_fs_fw(adap, card_fw_usable,
+                                       be32_to_cpu(fs_fw->fw_ver),
+                                       be32_to_cpu(card_fw->fw_ver))) {
+               ret = -t4_fw_upgrade(adap, adap->mbox, fw_data,
+                                    fw_size, 0);
+               if (ret != 0) {
+                       dev_err(adap->pdev_dev,
+                               "failed to install firmware: %d\n", ret);
+                       goto bye;
+               }
+
+               /* Installed successfully, update the cached header too. */
+               memcpy(card_fw, fs_fw, sizeof(*card_fw));
+               card_fw_usable = 1;
+               *reset = 0;     /* already reset as part of load_fw */
+       }
+
+       if (!card_fw_usable) {
+               uint32_t d, c, k;
+
+               d = be32_to_cpu(drv_fw->fw_ver);
+               c = be32_to_cpu(card_fw->fw_ver);
+               k = fs_fw ? be32_to_cpu(fs_fw->fw_ver) : 0;
+
+               dev_err(adap->pdev_dev, "Cannot find a usable firmware: "
+                       "chip state %d, "
+                       "driver compiled with %d.%d.%d.%d, "
+                       "card has %d.%d.%d.%d, filesystem has %d.%d.%d.%d\n",
+                       state,
+                       FW_HDR_FW_VER_MAJOR_GET(d), FW_HDR_FW_VER_MINOR_GET(d),
+                       FW_HDR_FW_VER_MICRO_GET(d), FW_HDR_FW_VER_BUILD_GET(d),
+                       FW_HDR_FW_VER_MAJOR_GET(c), FW_HDR_FW_VER_MINOR_GET(c),
+                       FW_HDR_FW_VER_MICRO_GET(c), FW_HDR_FW_VER_BUILD_GET(c),
+                       FW_HDR_FW_VER_MAJOR_GET(k), FW_HDR_FW_VER_MINOR_GET(k),
+                       FW_HDR_FW_VER_MICRO_GET(k), FW_HDR_FW_VER_BUILD_GET(k));
+               ret = EINVAL;
+               goto bye;
+       }
+
+       /* We're using whatever's on the card and it's known to be good. */
+       adap->params.fw_vers = be32_to_cpu(card_fw->fw_ver);
+       adap->params.tp_vers = be32_to_cpu(card_fw->tp_microcode_ver);
+
+bye:
+       return ret;
+}
+
 /**
  *     t4_flash_erase_sectors - erase a range of flash sectors
  *     @adapter: the adapter
@@ -1368,7 +1433,7 @@ static void pcie_intr_handler(struct adapter *adapter)
                                    PCIE_CORE_UTL_PCI_EXPRESS_PORT_STATUS,
                                    pcie_port_intr_info) +
              t4_handle_intr_status(adapter, PCIE_INT_CAUSE,
-                                   is_t4(adapter->chip) ?
+                                   is_t4(adapter->params.chip) ?
                                    pcie_intr_info : t5_pcie_intr_info);
 
        if (fat)
@@ -1782,7 +1847,7 @@ static void xgmac_intr_handler(struct adapter *adap, int port)
 {
        u32 v, int_cause_reg;
 
-       if (is_t4(adap->chip))
+       if (is_t4(adap->params.chip))
                int_cause_reg = PORT_REG(port, XGMAC_PORT_INT_CAUSE);
        else
                int_cause_reg = T5_PORT_REG(port, MAC_PORT_INT_CAUSE);
@@ -2250,7 +2315,7 @@ void t4_get_port_stats(struct adapter *adap, int idx, struct port_stats *p)
 
 #define GET_STAT(name) \
        t4_read_reg64(adap, \
-       (is_t4(adap->chip) ? PORT_REG(idx, MPS_PORT_STAT_##name##_L) : \
+       (is_t4(adap->params.chip) ? PORT_REG(idx, MPS_PORT_STAT_##name##_L) : \
        T5_PORT_REG(idx, MPS_PORT_STAT_##name##_L)))
 #define GET_STAT_COM(name) t4_read_reg64(adap, MPS_STAT_##name##_L)
 
@@ -2332,7 +2397,7 @@ void t4_wol_magic_enable(struct adapter *adap, unsigned int port,
 {
        u32 mag_id_reg_l, mag_id_reg_h, port_cfg_reg;
 
-       if (is_t4(adap->chip)) {
+       if (is_t4(adap->params.chip)) {
                mag_id_reg_l = PORT_REG(port, XGMAC_PORT_MAGIC_MACID_LO);
                mag_id_reg_h = PORT_REG(port, XGMAC_PORT_MAGIC_MACID_HI);
                port_cfg_reg = PORT_REG(port, XGMAC_PORT_CFG2);
@@ -2374,7 +2439,7 @@ int t4_wol_pat_enable(struct adapter *adap, unsigned int port, unsigned int map,
        int i;
        u32 port_cfg_reg;
 
-       if (is_t4(adap->chip))
+       if (is_t4(adap->params.chip))
                port_cfg_reg = PORT_REG(port, XGMAC_PORT_CFG2);
        else
                port_cfg_reg = T5_PORT_REG(port, MAC_PORT_CFG2);
@@ -2387,7 +2452,7 @@ int t4_wol_pat_enable(struct adapter *adap, unsigned int port, unsigned int map,
                return -EINVAL;
 
 #define EPIO_REG(name) \
-       (is_t4(adap->chip) ? PORT_REG(port, XGMAC_PORT_EPIO_##name) : \
+       (is_t4(adap->params.chip) ? PORT_REG(port, XGMAC_PORT_EPIO_##name) : \
        T5_PORT_REG(port, MAC_PORT_EPIO_##name))
 
        t4_write_reg(adap, EPIO_REG(DATA1), mask0 >> 32);
@@ -2474,7 +2539,7 @@ int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox,
 int t4_mem_win_read_len(struct adapter *adap, u32 addr, __be32 *data, int len)
 {
        int i, off;
-       u32 win_pf = is_t4(adap->chip) ? 0 : V_PFNUM(adap->fn);
+       u32 win_pf = is_t4(adap->params.chip) ? 0 : V_PFNUM(adap->fn);
 
        /* Align on a 2KB boundary.
         */
@@ -3306,7 +3371,7 @@ int t4_alloc_mac_filt(struct adapter *adap, unsigned int mbox,
        int i, ret;
        struct fw_vi_mac_cmd c;
        struct fw_vi_mac_exact *p;
-       unsigned int max_naddr = is_t4(adap->chip) ?
+       unsigned int max_naddr = is_t4(adap->params.chip) ?
                                       NUM_MPS_CLS_SRAM_L_INSTANCES :
                                       NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
 
@@ -3368,7 +3433,7 @@ int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid,
        int ret, mode;
        struct fw_vi_mac_cmd c;
        struct fw_vi_mac_exact *p = c.u.exact;
-       unsigned int max_mac_addr = is_t4(adap->chip) ?
+       unsigned int max_mac_addr = is_t4(adap->params.chip) ?
                                    NUM_MPS_CLS_SRAM_L_INSTANCES :
                                    NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
 
@@ -3699,13 +3764,14 @@ int t4_prep_adapter(struct adapter *adapter)
 {
        int ret, ver;
        uint16_t device_id;
+       u32 pl_rev;
 
        ret = t4_wait_dev_ready(adapter);
        if (ret < 0)
                return ret;
 
        get_pci_mode(adapter, &adapter->params.pci);
-       adapter->params.rev = t4_read_reg(adapter, PL_REV);
+       pl_rev = G_REV(t4_read_reg(adapter, PL_REV));
 
        ret = get_flash_params(adapter);
        if (ret < 0) {
@@ -3717,14 +3783,13 @@ int t4_prep_adapter(struct adapter *adapter)
         */
        pci_read_config_word(adapter->pdev, PCI_DEVICE_ID, &device_id);
        ver = device_id >> 12;
+       adapter->params.chip = 0;
        switch (ver) {
        case CHELSIO_T4:
-               adapter->chip = CHELSIO_CHIP_CODE(CHELSIO_T4,
-                                                 adapter->params.rev);
+               adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T4, pl_rev);
                break;
        case CHELSIO_T5:
-               adapter->chip = CHELSIO_CHIP_CODE(CHELSIO_T5,
-                                                 adapter->params.rev);
+               adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T5, pl_rev);
                break;
        default:
                dev_err(adapter->pdev_dev, "Device %d is not supported\n",
@@ -3732,9 +3797,6 @@ int t4_prep_adapter(struct adapter *adapter)
                return -EINVAL;
        }
 
-       /* Reassign the updated revision field */
-       adapter->params.rev = adapter->chip;
-
        init_cong_ctrl(adapter->params.a_wnd, adapter->params.b_wnd);
 
        /*
@@ -3746,6 +3808,109 @@ int t4_prep_adapter(struct adapter *adapter)
        return 0;
 }
 
+/**
+ *      t4_init_tp_params - initialize adap->params.tp
+ *      @adap: the adapter
+ *
+ *      Initialize various fields of the adapter's TP Parameters structure.
+ */
+int t4_init_tp_params(struct adapter *adap)
+{
+       int chan;
+       u32 v;
+
+       v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
+       adap->params.tp.tre = TIMERRESOLUTION_GET(v);
+       adap->params.tp.dack_re = DELAYEDACKRESOLUTION_GET(v);
+
+       /* MODQ_REQ_MAP defaults to setting queues 0-3 to chan 0-3 */
+       for (chan = 0; chan < NCHAN; chan++)
+               adap->params.tp.tx_modq[chan] = chan;
+
+       /* Cache the adapter's Compressed Filter Mode and global Incress
+        * Configuration.
+        */
+       t4_read_indirect(adap, TP_PIO_ADDR, TP_PIO_DATA,
+                        &adap->params.tp.vlan_pri_map, 1,
+                        TP_VLAN_PRI_MAP);
+       t4_read_indirect(adap, TP_PIO_ADDR, TP_PIO_DATA,
+                        &adap->params.tp.ingress_config, 1,
+                        TP_INGRESS_CONFIG);
+
+       /* Now that we have TP_VLAN_PRI_MAP cached, we can calculate the field
+        * shift positions of several elements of the Compressed Filter Tuple
+        * for this adapter which we need frequently ...
+        */
+       adap->params.tp.vlan_shift = t4_filter_field_shift(adap, F_VLAN);
+       adap->params.tp.vnic_shift = t4_filter_field_shift(adap, F_VNIC_ID);
+       adap->params.tp.port_shift = t4_filter_field_shift(adap, F_PORT);
+       adap->params.tp.protocol_shift = t4_filter_field_shift(adap,
+                                                              F_PROTOCOL);
+
+       /* If TP_INGRESS_CONFIG.VNID == 0, then TP_VLAN_PRI_MAP.VNIC_ID
+        * represents the presense of an Outer VLAN instead of a VNIC ID.
+        */
+       if ((adap->params.tp.ingress_config & F_VNIC) == 0)
+               adap->params.tp.vnic_shift = -1;
+
+       return 0;
+}
+
+/**
+ *      t4_filter_field_shift - calculate filter field shift
+ *      @adap: the adapter
+ *      @filter_sel: the desired field (from TP_VLAN_PRI_MAP bits)
+ *
+ *      Return the shift position of a filter field within the Compressed
+ *      Filter Tuple.  The filter field is specified via its selection bit
+ *      within TP_VLAN_PRI_MAL (filter mode).  E.g. F_VLAN.
+ */
+int t4_filter_field_shift(const struct adapter *adap, int filter_sel)
+{
+       unsigned int filter_mode = adap->params.tp.vlan_pri_map;
+       unsigned int sel;
+       int field_shift;
+
+       if ((filter_mode & filter_sel) == 0)
+               return -1;
+
+       for (sel = 1, field_shift = 0; sel < filter_sel; sel <<= 1) {
+               switch (filter_mode & sel) {
+               case F_FCOE:
+                       field_shift += W_FT_FCOE;
+                       break;
+               case F_PORT:
+                       field_shift += W_FT_PORT;
+                       break;
+               case F_VNIC_ID:
+                       field_shift += W_FT_VNIC_ID;
+                       break;
+               case F_VLAN:
+                       field_shift += W_FT_VLAN;
+                       break;
+               case F_TOS:
+                       field_shift += W_FT_TOS;
+                       break;
+               case F_PROTOCOL:
+                       field_shift += W_FT_PROTOCOL;
+                       break;
+               case F_ETHERTYPE:
+                       field_shift += W_FT_ETHERTYPE;
+                       break;
+               case F_MACMATCH:
+                       field_shift += W_FT_MACMATCH;
+                       break;
+               case F_MPSHITTYPE:
+                       field_shift += W_FT_MPSHITTYPE;
+                       break;
+               case F_FRAGMENTATION:
+                       field_shift += W_FT_FRAGMENTATION;
+                       break;
+               }
+       }
+       return field_shift;
+}
+
 int t4_port_init(struct adapter *adap, int mbox, int pf, int vf)
 {
        u8 addr[6];