qlcnic: NIC Partitioning - Add non privileged mode support

Added support for NIC functions that work in non privileged mode where these
functions are privileged to do IO only, the control operations are handled via
privileged functions.
Bumped up version number to 5.0.3.

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

1 files changed, 115 insertions, 9 deletions

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 1e5e66facabd..119bcae5e74b 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -103,7 +103,14 @@ static irqreturn_t qlcnic_msix_intr(int irq, void *data);
 
 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
 static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
-
+static int qlcnic_start_firmware(struct qlcnic_adapter *);
+
+static void qlcnic_dev_set_npar_ready(struct qlcnic_adapter *);
+static void qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *);
+static int qlcnicvf_set_ilb_mode(struct qlcnic_adapter *);
+static int qlcnicvf_config_led(struct qlcnic_adapter *, u32, u32);
+static int qlcnicvf_config_bridged_mode(struct qlcnic_adapter *, u32);
+static int qlcnicvf_start_firmware(struct qlcnic_adapter *);
 /*  PCI Device ID Table  */
 #define ENTRY(device) \
         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
@@ -375,7 +382,8 @@ static struct qlcnic_nic_template qlcnic_ops = {
         .config_bridged_mode = qlcnic_config_bridged_mode,
         .config_led = qlcnic_config_led,
         .set_ilb_mode = qlcnic_set_ilb_mode,
-        .clear_ilb_mode = qlcnic_clear_ilb_mode
+        .clear_ilb_mode = qlcnic_clear_ilb_mode,
+        .start_firmware = qlcnic_start_firmware
 };
 
 static struct qlcnic_nic_template qlcnic_pf_ops = {
@@ -383,7 +391,17 @@ static struct qlcnic_nic_template qlcnic_pf_ops = {
         .config_bridged_mode = qlcnic_config_bridged_mode,
         .config_led = qlcnic_config_led,
         .set_ilb_mode = qlcnic_set_ilb_mode,
-        .clear_ilb_mode = qlcnic_clear_ilb_mode
+        .clear_ilb_mode = qlcnic_clear_ilb_mode,
+        .start_firmware = qlcnic_start_firmware
+};
+
+static struct qlcnic_nic_template qlcnic_vf_ops = {
+        .get_mac_addr = qlcnic_get_mac_address,
+        .config_bridged_mode = qlcnicvf_config_bridged_mode,
+        .config_led = qlcnicvf_config_led,
+        .set_ilb_mode = qlcnicvf_set_ilb_mode,
+        .clear_ilb_mode = qlcnicvf_clear_ilb_mode,
+        .start_firmware = qlcnicvf_start_firmware
 };
 
 static void
@@ -467,7 +485,6 @@ qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
                 iounmap(adapter->ahw.pci_base0);
 }
 
-/* Use api lock to access this function */
 static int
 qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
 {
@@ -567,6 +584,7 @@ qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
                 /* Set privilege level for other functions */
                 if (qlcnic_config_npars)
                         qlcnic_set_function_modes(adapter);
+                qlcnic_dev_set_npar_ready(adapter);
                 dev_info(&adapter->pdev->dev,
                         "HAL Version: %d, Management function\n",
                         adapter->fw_hal_version);
@@ -578,6 +596,13 @@ qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
                         adapter->fw_hal_version);
                 adapter->nic_ops = &qlcnic_pf_ops;
                 break;
+        case QLCNIC_NON_PRIV_FUNC:
+                adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
+                dev_info(&adapter->pdev->dev,
+                        "HAL Version: %d Non Privileged function\n",
+                        adapter->fw_hal_version);
+                adapter->nic_ops = &qlcnic_vf_ops;
+                break;
         default:
                 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
                         priv_level);
@@ -772,6 +797,8 @@ wait_init:
         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
         qlcnic_idc_debug_info(adapter, 1);
 
+        qlcnic_dev_set_npar_ready(adapter);
+
         qlcnic_check_options(adapter);
 
         if (adapter->fw_hal_version != QLCNIC_FW_BASE &&
@@ -1244,7 +1271,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (qlcnic_setup_idc_param(adapter))
                 goto err_out_iounmap;
 
-        err = qlcnic_start_firmware(adapter);
+        err = adapter->nic_ops->start_firmware(adapter);
         if (err) {
                 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
                 goto err_out_decr_ref;
@@ -1410,7 +1437,7 @@ qlcnic_resume(struct pci_dev *pdev)
         pci_set_master(pdev);
         pci_restore_state(pdev);
 
-        err = qlcnic_start_firmware(adapter);
+        err = adapter->nic_ops->start_firmware(adapter);
         if (err) {
                 dev_err(&pdev->dev, "failed to start firmware\n");
                 return err;
@@ -2260,7 +2287,7 @@ qlcnic_fwinit_work(struct work_struct *work)
 {
         struct qlcnic_adapter *adapter = container_of(work,
                         struct qlcnic_adapter, fw_work.work);
-        u32 dev_state = 0xf;
+        u32 dev_state = 0xf, npar_state;
 
         if (qlcnic_api_lock(adapter))
                 goto err_ret;
@@ -2273,6 +2300,19 @@ qlcnic_fwinit_work(struct work_struct *work)
                 return;
         }
 
+        if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
+                npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
+                if (npar_state == QLCNIC_DEV_NPAR_RDY) {
+                        qlcnic_api_unlock(adapter);
+                        goto wait_npar;
+                } else {
+                        qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
+                                FW_POLL_DELAY);
+                        qlcnic_api_unlock(adapter);
+                        return;
+                }
+        }
+
         if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
                 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
                                         adapter->reset_ack_timeo);
@@ -2305,7 +2345,7 @@ skip_ack_check:
 
                 qlcnic_api_unlock(adapter);
 
-                if (!qlcnic_start_firmware(adapter)) {
+                if (!adapter->nic_ops->start_firmware(adapter)) {
                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
                         return;
                 }
@@ -2314,6 +2354,7 @@ skip_ack_check:
 
         qlcnic_api_unlock(adapter);
 
+wait_npar:
         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
         QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
 
@@ -2328,7 +2369,7 @@ skip_ack_check:
                 break;
 
         default:
-                if (!qlcnic_start_firmware(adapter)) {
+                if (!adapter->nic_ops->start_firmware(adapter)) {
                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
                         return;
                 }
@@ -2402,6 +2443,30 @@ qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
         qlcnic_api_unlock(adapter);
 }
 
+/* Transit to NPAR READY state from NPAR NOT READY state */
+static void
+qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
+{
+        u32 state;
+
+        if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC ||
+                adapter->fw_hal_version == QLCNIC_FW_BASE)
+                return;
+
+        if (qlcnic_api_lock(adapter))
+                return;
+
+        state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
+
+        if (state != QLCNIC_DEV_NPAR_RDY) {
+                QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
+                        QLCNIC_DEV_NPAR_RDY);
+                QLCDB(adapter, DRV, "NPAR READY state set\n");
+        }
+
+        qlcnic_api_unlock(adapter);
+}
+
 static void
 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
                 work_func_t func, int delay)
@@ -2889,6 +2954,47 @@ done:
         return NOTIFY_DONE;
 }
 
+static int
+qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
+{
+        int err;
+
+        err = qlcnic_can_start_firmware(adapter);
+        if (err)
+                return err;
+
+        qlcnic_check_options(adapter);
+
+        adapter->need_fw_reset = 0;
+
+        return err;
+}
+
+static int
+qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
+{
+        return -EOPNOTSUPP;
+}
+
+static int
+qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
+{
+        return -EOPNOTSUPP;
+}
+
+static int
+qlcnicvf_set_ilb_mode(struct qlcnic_adapter *adapter)
+{
+        return -EOPNOTSUPP;
+}
+
+static void
+qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *adapter)
+{
+        return;
+}
+
+
 static struct notifier_block    qlcnic_netdev_cb = {
         .notifier_call = qlcnic_netdev_event,
 };