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-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic.h8
-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic_csr.h2
-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic_fw.c197
-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic_irq.c142
-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic_mac.c6
-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic_netdev.c5
-rw-r--r--drivers/net/ethernet/meta/fbnic/fbnic_pci.c14
7 files changed, 231 insertions, 143 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic.h b/drivers/net/ethernet/meta/fbnic/fbnic.h
index 4ca7b99ef131..de6b1a340f55 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic.h
+++ b/drivers/net/ethernet/meta/fbnic/fbnic.h
@@ -154,14 +154,14 @@ struct fbnic_dev *fbnic_devlink_alloc(struct pci_dev *pdev);
void fbnic_devlink_register(struct fbnic_dev *fbd);
void fbnic_devlink_unregister(struct fbnic_dev *fbd);
-int fbnic_fw_enable_mbx(struct fbnic_dev *fbd);
-void fbnic_fw_disable_mbx(struct fbnic_dev *fbd);
+int fbnic_fw_request_mbx(struct fbnic_dev *fbd);
+void fbnic_fw_free_mbx(struct fbnic_dev *fbd);
void fbnic_hwmon_register(struct fbnic_dev *fbd);
void fbnic_hwmon_unregister(struct fbnic_dev *fbd);
-int fbnic_pcs_irq_enable(struct fbnic_dev *fbd);
-void fbnic_pcs_irq_disable(struct fbnic_dev *fbd);
+int fbnic_pcs_request_irq(struct fbnic_dev *fbd);
+void fbnic_pcs_free_irq(struct fbnic_dev *fbd);
void fbnic_napi_name_irqs(struct fbnic_dev *fbd);
int fbnic_napi_request_irq(struct fbnic_dev *fbd,
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h
index 3b12a0ab5906..51bee8072420 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h
@@ -796,8 +796,10 @@ enum {
/* PUL User Registers */
#define FBNIC_CSR_START_PUL_USER 0x31000 /* CSR section delimiter */
#define FBNIC_PUL_OB_TLP_HDR_AW_CFG 0x3103d /* 0xc40f4 */
+#define FBNIC_PUL_OB_TLP_HDR_AW_CFG_FLUSH CSR_BIT(19)
#define FBNIC_PUL_OB_TLP_HDR_AW_CFG_BME CSR_BIT(18)
#define FBNIC_PUL_OB_TLP_HDR_AR_CFG 0x3103e /* 0xc40f8 */
+#define FBNIC_PUL_OB_TLP_HDR_AR_CFG_FLUSH CSR_BIT(19)
#define FBNIC_PUL_OB_TLP_HDR_AR_CFG_BME CSR_BIT(18)
#define FBNIC_PUL_USER_OB_RD_TLP_CNT_31_0 \
0x3106e /* 0xc41b8 */
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_fw.c b/drivers/net/ethernet/meta/fbnic/fbnic_fw.c
index 88db3dacb940..3d9636a6c968 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_fw.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_fw.c
@@ -17,11 +17,29 @@ static void __fbnic_mbx_wr_desc(struct fbnic_dev *fbd, int mbx_idx,
{
u32 desc_offset = FBNIC_IPC_MBX(mbx_idx, desc_idx);
+ /* Write the upper 32b and then the lower 32b. Doing this the
+ * FW can then read lower, upper, lower to verify that the state
+ * of the descriptor wasn't changed mid-transaction.
+ */
fw_wr32(fbd, desc_offset + 1, upper_32_bits(desc));
fw_wrfl(fbd);
fw_wr32(fbd, desc_offset, lower_32_bits(desc));
}
+static void __fbnic_mbx_invalidate_desc(struct fbnic_dev *fbd, int mbx_idx,
+ int desc_idx, u32 desc)
+{
+ u32 desc_offset = FBNIC_IPC_MBX(mbx_idx, desc_idx);
+
+ /* For initialization we write the lower 32b of the descriptor first.
+ * This way we can set the state to mark it invalid before we clear the
+ * upper 32b.
+ */
+ fw_wr32(fbd, desc_offset, desc);
+ fw_wrfl(fbd);
+ fw_wr32(fbd, desc_offset + 1, 0);
+}
+
static u64 __fbnic_mbx_rd_desc(struct fbnic_dev *fbd, int mbx_idx, int desc_idx)
{
u32 desc_offset = FBNIC_IPC_MBX(mbx_idx, desc_idx);
@@ -33,29 +51,41 @@ static u64 __fbnic_mbx_rd_desc(struct fbnic_dev *fbd, int mbx_idx, int desc_idx)
return desc;
}
-static void fbnic_mbx_init_desc_ring(struct fbnic_dev *fbd, int mbx_idx)
+static void fbnic_mbx_reset_desc_ring(struct fbnic_dev *fbd, int mbx_idx)
{
int desc_idx;
+ /* Disable DMA transactions from the device,
+ * and flush any transactions triggered during cleaning
+ */
+ switch (mbx_idx) {
+ case FBNIC_IPC_MBX_RX_IDX:
+ wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AW_CFG,
+ FBNIC_PUL_OB_TLP_HDR_AW_CFG_FLUSH);
+ break;
+ case FBNIC_IPC_MBX_TX_IDX:
+ wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AR_CFG,
+ FBNIC_PUL_OB_TLP_HDR_AR_CFG_FLUSH);
+ break;
+ }
+
+ wrfl(fbd);
+
/* Initialize first descriptor to all 0s. Doing this gives us a
* solid stop for the firmware to hit when it is done looping
* through the ring.
*/
- __fbnic_mbx_wr_desc(fbd, mbx_idx, 0, 0);
-
- fw_wrfl(fbd);
+ __fbnic_mbx_invalidate_desc(fbd, mbx_idx, 0, 0);
/* We then fill the rest of the ring starting at the end and moving
* back toward descriptor 0 with skip descriptors that have no
* length nor address, and tell the firmware that they can skip
* them and just move past them to the one we initialized to 0.
*/
- for (desc_idx = FBNIC_IPC_MBX_DESC_LEN; --desc_idx;) {
- __fbnic_mbx_wr_desc(fbd, mbx_idx, desc_idx,
- FBNIC_IPC_MBX_DESC_FW_CMPL |
- FBNIC_IPC_MBX_DESC_HOST_CMPL);
- fw_wrfl(fbd);
- }
+ for (desc_idx = FBNIC_IPC_MBX_DESC_LEN; --desc_idx;)
+ __fbnic_mbx_invalidate_desc(fbd, mbx_idx, desc_idx,
+ FBNIC_IPC_MBX_DESC_FW_CMPL |
+ FBNIC_IPC_MBX_DESC_HOST_CMPL);
}
void fbnic_mbx_init(struct fbnic_dev *fbd)
@@ -76,7 +106,7 @@ void fbnic_mbx_init(struct fbnic_dev *fbd)
wr32(fbd, FBNIC_INTR_CLEAR(0), 1u << FBNIC_FW_MSIX_ENTRY);
for (i = 0; i < FBNIC_IPC_MBX_INDICES; i++)
- fbnic_mbx_init_desc_ring(fbd, i);
+ fbnic_mbx_reset_desc_ring(fbd, i);
}
static int fbnic_mbx_map_msg(struct fbnic_dev *fbd, int mbx_idx,
@@ -141,7 +171,7 @@ static void fbnic_mbx_clean_desc_ring(struct fbnic_dev *fbd, int mbx_idx)
{
int i;
- fbnic_mbx_init_desc_ring(fbd, mbx_idx);
+ fbnic_mbx_reset_desc_ring(fbd, mbx_idx);
for (i = FBNIC_IPC_MBX_DESC_LEN; i--;)
fbnic_mbx_unmap_and_free_msg(fbd, mbx_idx, i);
@@ -322,67 +352,41 @@ static int fbnic_fw_xmit_simple_msg(struct fbnic_dev *fbd, u32 msg_type)
return err;
}
-/**
- * fbnic_fw_xmit_cap_msg - Allocate and populate a FW capabilities message
- * @fbd: FBNIC device structure
- *
- * Return: NULL on failure to allocate, error pointer on error, or pointer
- * to new TLV test message.
- *
- * Sends a single TLV header indicating the host wants the firmware to
- * confirm the capabilities and version.
- **/
-static int fbnic_fw_xmit_cap_msg(struct fbnic_dev *fbd)
-{
- int err = fbnic_fw_xmit_simple_msg(fbd, FBNIC_TLV_MSG_ID_HOST_CAP_REQ);
-
- /* Return 0 if we are not calling this on ASIC */
- return (err == -EOPNOTSUPP) ? 0 : err;
-}
-
-static void fbnic_mbx_postinit_desc_ring(struct fbnic_dev *fbd, int mbx_idx)
+static void fbnic_mbx_init_desc_ring(struct fbnic_dev *fbd, int mbx_idx)
{
struct fbnic_fw_mbx *mbx = &fbd->mbx[mbx_idx];
- /* This is a one time init, so just exit if it is completed */
- if (mbx->ready)
- return;
-
mbx->ready = true;
switch (mbx_idx) {
case FBNIC_IPC_MBX_RX_IDX:
+ /* Enable DMA writes from the device */
+ wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AW_CFG,
+ FBNIC_PUL_OB_TLP_HDR_AW_CFG_BME);
+
/* Make sure we have a page for the FW to write to */
fbnic_mbx_alloc_rx_msgs(fbd);
break;
case FBNIC_IPC_MBX_TX_IDX:
- /* Force version to 1 if we successfully requested an update
- * from the firmware. This should be overwritten once we get
- * the actual version from the firmware in the capabilities
- * request message.
- */
- if (!fbnic_fw_xmit_cap_msg(fbd) &&
- !fbd->fw_cap.running.mgmt.version)
- fbd->fw_cap.running.mgmt.version = 1;
+ /* Enable DMA reads from the device */
+ wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AR_CFG,
+ FBNIC_PUL_OB_TLP_HDR_AR_CFG_BME);
break;
}
}
-static void fbnic_mbx_postinit(struct fbnic_dev *fbd)
+static bool fbnic_mbx_event(struct fbnic_dev *fbd)
{
- int i;
-
- /* We only need to do this on the first interrupt following init.
+ /* We only need to do this on the first interrupt following reset.
* this primes the mailbox so that we will have cleared all the
* skip descriptors.
*/
if (!(rd32(fbd, FBNIC_INTR_STATUS(0)) & (1u << FBNIC_FW_MSIX_ENTRY)))
- return;
+ return false;
wr32(fbd, FBNIC_INTR_CLEAR(0), 1u << FBNIC_FW_MSIX_ENTRY);
- for (i = 0; i < FBNIC_IPC_MBX_INDICES; i++)
- fbnic_mbx_postinit_desc_ring(fbd, i);
+ return true;
}
/**
@@ -859,7 +863,7 @@ next_page:
void fbnic_mbx_poll(struct fbnic_dev *fbd)
{
- fbnic_mbx_postinit(fbd);
+ fbnic_mbx_event(fbd);
fbnic_mbx_process_tx_msgs(fbd);
fbnic_mbx_process_rx_msgs(fbd);
@@ -867,60 +871,97 @@ void fbnic_mbx_poll(struct fbnic_dev *fbd)
int fbnic_mbx_poll_tx_ready(struct fbnic_dev *fbd)
{
- struct fbnic_fw_mbx *tx_mbx;
- int attempts = 50;
+ unsigned long timeout = jiffies + 10 * HZ + 1;
+ int err, i;
- /* Immediate fail if BAR4 isn't there */
- if (!fbnic_fw_present(fbd))
- return -ENODEV;
+ do {
+ if (!time_is_after_jiffies(timeout))
+ return -ETIMEDOUT;
- tx_mbx = &fbd->mbx[FBNIC_IPC_MBX_TX_IDX];
- while (!tx_mbx->ready && --attempts) {
/* Force the firmware to trigger an interrupt response to
* avoid the mailbox getting stuck closed if the interrupt
* is reset.
*/
- fbnic_mbx_init_desc_ring(fbd, FBNIC_IPC_MBX_TX_IDX);
+ fbnic_mbx_reset_desc_ring(fbd, FBNIC_IPC_MBX_TX_IDX);
- msleep(200);
+ /* Immediate fail if BAR4 went away */
+ if (!fbnic_fw_present(fbd))
+ return -ENODEV;
- fbnic_mbx_poll(fbd);
- }
+ msleep(20);
+ } while (!fbnic_mbx_event(fbd));
+
+ /* FW has shown signs of life. Enable DMA and start Tx/Rx */
+ for (i = 0; i < FBNIC_IPC_MBX_INDICES; i++)
+ fbnic_mbx_init_desc_ring(fbd, i);
+
+ /* Request an update from the firmware. This should overwrite
+ * mgmt.version once we get the actual version from the firmware
+ * in the capabilities request message.
+ */
+ err = fbnic_fw_xmit_simple_msg(fbd, FBNIC_TLV_MSG_ID_HOST_CAP_REQ);
+ if (err)
+ goto clean_mbx;
+
+ /* Use "1" to indicate we entered the state waiting for a response */
+ fbd->fw_cap.running.mgmt.version = 1;
+
+ return 0;
+clean_mbx:
+ /* Cleanup Rx buffers and disable mailbox */
+ fbnic_mbx_clean(fbd);
+ return err;
+}
+
+static void __fbnic_fw_evict_cmpl(struct fbnic_fw_completion *cmpl_data)
+{
+ cmpl_data->result = -EPIPE;
+ complete(&cmpl_data->done);
+}
- return attempts ? 0 : -ETIMEDOUT;
+static void fbnic_mbx_evict_all_cmpl(struct fbnic_dev *fbd)
+{
+ if (fbd->cmpl_data) {
+ __fbnic_fw_evict_cmpl(fbd->cmpl_data);
+ fbd->cmpl_data = NULL;
+ }
}
void fbnic_mbx_flush_tx(struct fbnic_dev *fbd)
{
+ unsigned long timeout = jiffies + 10 * HZ + 1;
struct fbnic_fw_mbx *tx_mbx;
- int attempts = 50;
- u8 count = 0;
-
- /* Nothing to do if there is no mailbox */
- if (!fbnic_fw_present(fbd))
- return;
+ u8 tail;
/* Record current Rx stats */
tx_mbx = &fbd->mbx[FBNIC_IPC_MBX_TX_IDX];
- /* Nothing to do if mailbox never got to ready */
- if (!tx_mbx->ready)
- return;
+ spin_lock_irq(&fbd->fw_tx_lock);
+
+ /* Clear ready to prevent any further attempts to transmit */
+ tx_mbx->ready = false;
+
+ /* Read tail to determine the last tail state for the ring */
+ tail = tx_mbx->tail;
+
+ /* Flush any completions as we are no longer processing Rx */
+ fbnic_mbx_evict_all_cmpl(fbd);
+
+ spin_unlock_irq(&fbd->fw_tx_lock);
/* Give firmware time to process packet,
- * we will wait up to 10 seconds which is 50 waits of 200ms.
+ * we will wait up to 10 seconds which is 500 waits of 20ms.
*/
do {
u8 head = tx_mbx->head;
- if (head == tx_mbx->tail)
+ /* Tx ring is empty once head == tail */
+ if (head == tail)
break;
- msleep(200);
+ msleep(20);
fbnic_mbx_process_tx_msgs(fbd);
-
- count += (tx_mbx->head - head) % FBNIC_IPC_MBX_DESC_LEN;
- } while (count < FBNIC_IPC_MBX_DESC_LEN && --attempts);
+ } while (time_is_after_jiffies(timeout));
}
void fbnic_get_fw_ver_commit_str(struct fbnic_dev *fbd, char *fw_version,
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_irq.c b/drivers/net/ethernet/meta/fbnic/fbnic_irq.c
index 1bbc0e56f3a0..1c88a2bf3a7a 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_irq.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_irq.c
@@ -19,69 +19,105 @@ static irqreturn_t fbnic_fw_msix_intr(int __always_unused irq, void *data)
return IRQ_HANDLED;
}
+static int __fbnic_fw_enable_mbx(struct fbnic_dev *fbd, int vector)
+{
+ int err;
+
+ /* Initialize mailbox and attempt to poll it into ready state */
+ fbnic_mbx_init(fbd);
+ err = fbnic_mbx_poll_tx_ready(fbd);
+ if (err) {
+ dev_warn(fbd->dev, "FW mailbox did not enter ready state\n");
+ return err;
+ }
+
+ /* Enable interrupt and unmask the vector */
+ enable_irq(vector);
+ fbnic_wr32(fbd, FBNIC_INTR_MASK_CLEAR(0), 1u << FBNIC_FW_MSIX_ENTRY);
+
+ return 0;
+}
+
/**
- * fbnic_fw_enable_mbx - Configure and initialize Firmware Mailbox
+ * fbnic_fw_request_mbx - Configure and initialize Firmware Mailbox
* @fbd: Pointer to device to initialize
*
- * This function will initialize the firmware mailbox rings, enable the IRQ
- * and initialize the communication between the Firmware and the host. The
- * firmware is expected to respond to the initialization by sending an
- * interrupt essentially notifying the host that it has seen the
- * initialization and is now synced up.
+ * This function will allocate the IRQ and then reinitialize the mailbox
+ * starting communication between the host and firmware.
*
* Return: non-zero on failure.
**/
-int fbnic_fw_enable_mbx(struct fbnic_dev *fbd)
+int fbnic_fw_request_mbx(struct fbnic_dev *fbd)
{
- u32 vector = fbd->fw_msix_vector;
- int err;
+ struct pci_dev *pdev = to_pci_dev(fbd->dev);
+ int vector, err;
+
+ WARN_ON(fbd->fw_msix_vector);
+
+ vector = pci_irq_vector(pdev, FBNIC_FW_MSIX_ENTRY);
+ if (vector < 0)
+ return vector;
/* Request the IRQ for FW Mailbox vector. */
err = request_threaded_irq(vector, NULL, &fbnic_fw_msix_intr,
- IRQF_ONESHOT, dev_name(fbd->dev), fbd);
+ IRQF_ONESHOT | IRQF_NO_AUTOEN,
+ dev_name(fbd->dev), fbd);
if (err)
return err;
/* Initialize mailbox and attempt to poll it into ready state */
- fbnic_mbx_init(fbd);
- err = fbnic_mbx_poll_tx_ready(fbd);
- if (err) {
- dev_warn(fbd->dev, "FW mailbox did not enter ready state\n");
+ err = __fbnic_fw_enable_mbx(fbd, vector);
+ if (err)
free_irq(vector, fbd);
- return err;
- }
- /* Enable interrupts */
- fbnic_wr32(fbd, FBNIC_INTR_MASK_CLEAR(0), 1u << FBNIC_FW_MSIX_ENTRY);
+ fbd->fw_msix_vector = vector;
- return 0;
+ return err;
}
/**
- * fbnic_fw_disable_mbx - Disable mailbox and place it in standby state
- * @fbd: Pointer to device to disable
+ * fbnic_fw_disable_mbx - Temporarily place mailbox in standby state
+ * @fbd: Pointer to device
*
- * This function will disable the mailbox interrupt, free any messages still
- * in the mailbox and place it into a standby state. The firmware is
- * expected to see the update and assume that the host is in the reset state.
+ * Shutdown the mailbox by notifying the firmware to stop sending us logs, mask
+ * and synchronize the IRQ, and then clean up the rings.
**/
-void fbnic_fw_disable_mbx(struct fbnic_dev *fbd)
+static void fbnic_fw_disable_mbx(struct fbnic_dev *fbd)
{
- /* Disable interrupt and free vector */
- fbnic_wr32(fbd, FBNIC_INTR_MASK_SET(0), 1u << FBNIC_FW_MSIX_ENTRY);
+ /* Disable interrupt and synchronize the IRQ */
+ disable_irq(fbd->fw_msix_vector);
- /* Free the vector */
- free_irq(fbd->fw_msix_vector, fbd);
+ /* Mask the vector */
+ fbnic_wr32(fbd, FBNIC_INTR_MASK_SET(0), 1u << FBNIC_FW_MSIX_ENTRY);
/* Make sure disabling logs message is sent, must be done here to
* avoid risk of completing without a running interrupt.
*/
fbnic_mbx_flush_tx(fbd);
-
- /* Reset the mailboxes to the initialized state */
fbnic_mbx_clean(fbd);
}
+/**
+ * fbnic_fw_free_mbx - Disable mailbox and place it in standby state
+ * @fbd: Pointer to device to disable
+ *
+ * This function will disable the mailbox interrupt, free any messages still
+ * in the mailbox and place it into a disabled state. The firmware is
+ * expected to see the update and assume that the host is in the reset state.
+ **/
+void fbnic_fw_free_mbx(struct fbnic_dev *fbd)
+{
+ /* Vector has already been freed */
+ if (!fbd->fw_msix_vector)
+ return;
+
+ fbnic_fw_disable_mbx(fbd);
+
+ /* Free the vector */
+ free_irq(fbd->fw_msix_vector, fbd);
+ fbd->fw_msix_vector = 0;
+}
+
static irqreturn_t fbnic_pcs_msix_intr(int __always_unused irq, void *data)
{
struct fbnic_dev *fbd = data;
@@ -101,7 +137,7 @@ static irqreturn_t fbnic_pcs_msix_intr(int __always_unused irq, void *data)
}
/**
- * fbnic_pcs_irq_enable - Configure the MAC to enable it to advertise link
+ * fbnic_pcs_request_irq - Configure the PCS to enable it to advertise link
* @fbd: Pointer to device to initialize
*
* This function provides basic bringup for the MAC/PCS IRQ. For now the IRQ
@@ -109,41 +145,61 @@ static irqreturn_t fbnic_pcs_msix_intr(int __always_unused irq, void *data)
*
* Return: non-zero on failure.
**/
-int fbnic_pcs_irq_enable(struct fbnic_dev *fbd)
+int fbnic_pcs_request_irq(struct fbnic_dev *fbd)
{
- u32 vector = fbd->pcs_msix_vector;
- int err;
+ struct pci_dev *pdev = to_pci_dev(fbd->dev);
+ int vector, err;
- /* Request the IRQ for MAC link vector.
- * Map MAC cause to it, and unmask it
+ WARN_ON(fbd->pcs_msix_vector);
+
+ vector = pci_irq_vector(pdev, FBNIC_PCS_MSIX_ENTRY);
+ if (vector < 0)
+ return vector;
+
+ /* Request the IRQ for PCS link vector.
+ * Map PCS cause to it, and unmask it
*/
err = request_irq(vector, &fbnic_pcs_msix_intr, 0,
fbd->netdev->name, fbd);
if (err)
return err;
+ /* Map and enable interrupt, unmask vector after link is configured */
fbnic_wr32(fbd, FBNIC_INTR_MSIX_CTRL(FBNIC_INTR_MSIX_CTRL_PCS_IDX),
FBNIC_PCS_MSIX_ENTRY | FBNIC_INTR_MSIX_CTRL_ENABLE);
+ fbd->pcs_msix_vector = vector;
+
return 0;
}
/**
- * fbnic_pcs_irq_disable - Teardown the MAC IRQ to prepare for stopping
+ * fbnic_pcs_free_irq - Teardown the PCS IRQ to prepare for stopping
* @fbd: Pointer to device that is stopping
*
- * This function undoes the work done in fbnic_pcs_irq_enable and prepares
+ * This function undoes the work done in fbnic_pcs_request_irq and prepares
* the device to no longer receive traffic on the host interface.
**/
-void fbnic_pcs_irq_disable(struct fbnic_dev *fbd)
+void fbnic_pcs_free_irq(struct fbnic_dev *fbd)
{
+ /* Vector has already been freed */
+ if (!fbd->pcs_msix_vector)
+ return;
+
/* Disable interrupt */
fbnic_wr32(fbd, FBNIC_INTR_MSIX_CTRL(FBNIC_INTR_MSIX_CTRL_PCS_IDX),
FBNIC_PCS_MSIX_ENTRY);
+ fbnic_wrfl(fbd);
+
+ /* Synchronize IRQ to prevent race that would unmask vector */
+ synchronize_irq(fbd->pcs_msix_vector);
+
+ /* Mask the vector */
fbnic_wr32(fbd, FBNIC_INTR_MASK_SET(0), 1u << FBNIC_PCS_MSIX_ENTRY);
/* Free the vector */
free_irq(fbd->pcs_msix_vector, fbd);
+ fbd->pcs_msix_vector = 0;
}
void fbnic_synchronize_irq(struct fbnic_dev *fbd, int nr)
@@ -226,9 +282,6 @@ void fbnic_free_irqs(struct fbnic_dev *fbd)
{
struct pci_dev *pdev = to_pci_dev(fbd->dev);
- fbd->pcs_msix_vector = 0;
- fbd->fw_msix_vector = 0;
-
fbd->num_irqs = 0;
pci_free_irq_vectors(pdev);
@@ -254,8 +307,5 @@ int fbnic_alloc_irqs(struct fbnic_dev *fbd)
fbd->num_irqs = num_irqs;
- fbd->pcs_msix_vector = pci_irq_vector(pdev, FBNIC_PCS_MSIX_ENTRY);
- fbd->fw_msix_vector = pci_irq_vector(pdev, FBNIC_FW_MSIX_ENTRY);
-
return 0;
}
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_mac.c b/drivers/net/ethernet/meta/fbnic/fbnic_mac.c
index 14291401f463..dde4a37116e2 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_mac.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_mac.c
@@ -79,12 +79,6 @@ static void fbnic_mac_init_axi(struct fbnic_dev *fbd)
fbnic_init_readrq(fbd, FBNIC_QM_RNI_RBP_CTL, cls, readrq);
fbnic_init_mps(fbd, FBNIC_QM_RNI_RDE_CTL, cls, mps);
fbnic_init_mps(fbd, FBNIC_QM_RNI_RCM_CTL, cls, mps);
-
- /* Enable XALI AR/AW outbound */
- wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AW_CFG,
- FBNIC_PUL_OB_TLP_HDR_AW_CFG_BME);
- wr32(fbd, FBNIC_PUL_OB_TLP_HDR_AR_CFG,
- FBNIC_PUL_OB_TLP_HDR_AR_CFG_BME);
}
static void fbnic_mac_init_qm(struct fbnic_dev *fbd)
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c
index 79a01fdd1dd1..2524d9b88d59 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c
@@ -44,9 +44,10 @@ int __fbnic_open(struct fbnic_net *fbn)
if (err)
goto time_stop;
- err = fbnic_pcs_irq_enable(fbd);
+ err = fbnic_pcs_request_irq(fbd);
if (err)
goto time_stop;
+
/* Pull the BMC config and initialize the RPC */
fbnic_bmc_rpc_init(fbd);
fbnic_rss_reinit(fbd, fbn);
@@ -82,7 +83,7 @@ static int fbnic_stop(struct net_device *netdev)
struct fbnic_net *fbn = netdev_priv(netdev);
fbnic_down(fbn);
- fbnic_pcs_irq_disable(fbn->fbd);
+ fbnic_pcs_free_irq(fbn->fbd);
fbnic_time_stop(fbn);
fbnic_fw_xmit_ownership_msg(fbn->fbd, false);
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c
index 6cbbc2ee3e1f..4e8595239c0f 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_pci.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_pci.c
@@ -283,7 +283,7 @@ static int fbnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto free_irqs;
}
- err = fbnic_fw_enable_mbx(fbd);
+ err = fbnic_fw_request_mbx(fbd);
if (err) {
dev_err(&pdev->dev,
"Firmware mailbox initialization failure\n");
@@ -363,7 +363,7 @@ static void fbnic_remove(struct pci_dev *pdev)
fbnic_hwmon_unregister(fbd);
fbnic_dbg_fbd_exit(fbd);
fbnic_devlink_unregister(fbd);
- fbnic_fw_disable_mbx(fbd);
+ fbnic_fw_free_mbx(fbd);
fbnic_free_irqs(fbd);
fbnic_devlink_free(fbd);
@@ -387,7 +387,7 @@ static int fbnic_pm_suspend(struct device *dev)
rtnl_unlock();
null_uc_addr:
- fbnic_fw_disable_mbx(fbd);
+ fbnic_fw_free_mbx(fbd);
/* Free the IRQs so they aren't trying to occupy sleeping CPUs */
fbnic_free_irqs(fbd);
@@ -420,7 +420,7 @@ static int __fbnic_pm_resume(struct device *dev)
fbd->mac->init_regs(fbd);
/* Re-enable mailbox */
- err = fbnic_fw_enable_mbx(fbd);
+ err = fbnic_fw_request_mbx(fbd);
if (err)
goto err_free_irqs;
@@ -438,15 +438,15 @@ static int __fbnic_pm_resume(struct device *dev)
if (netif_running(netdev)) {
err = __fbnic_open(fbn);
if (err)
- goto err_disable_mbx;
+ goto err_free_mbx;
}
rtnl_unlock();
return 0;
-err_disable_mbx:
+err_free_mbx:
rtnl_unlock();
- fbnic_fw_disable_mbx(fbd);
+ fbnic_fw_free_mbx(fbd);
err_free_irqs:
fbnic_free_irqs(fbd);
err_invalidate_uc_addr: