The following patches are intended for inclusion in the 3.15 kernel.
They include a number of bug fixes, some cleanups, and the conversion
to pci_enable_msix_range.
Please let me know if there are any issues.
Thanks,
Jon
---
Alexander Gordeev (4):
ntb: Fix leakage of ntb_device::msix_entries[] array
ntb: Use pci_msix_vec_count() to obtain number of MSI-Xs
ntb: Split ntb_setup_msix() into separate BWD/SNB routines
ntb: Use pci_enable_msix_range() instead of pci_enable_msix()
Jon Mason (4):
ntb_netdev: Fix list_for_each_entry exit issue
ntb_netdev: Fix skb free issue in open
NTB: client event cleanup
NTB: Code Style Clean-up
Roland Dreier (1):
NTB: Fix typo in setting one translation register
Some white space and 80 char overruns corrected.
Signed-off-by: Jon Mason <[email protected]>
---
drivers/net/ntb_netdev.c | 2 +-
drivers/ntb/ntb_hw.c | 19 ++++++++++---------
drivers/ntb/ntb_hw.h | 2 +-
drivers/ntb/ntb_transport.c | 19 +++++++++----------
include/linux/ntb.h | 14 +++++++-------
5 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
index 14570b2..63aa9d9 100644
--- a/drivers/net/ntb_netdev.c
+++ b/drivers/net/ntb_netdev.c
@@ -377,7 +377,7 @@ static void ntb_netdev_remove(struct pci_dev *pdev)
{
struct net_device *ndev;
struct ntb_netdev *dev;
- bool found = false;
+ bool found = false;
list_for_each_entry(dev, &dev_list, list) {
if (dev->pdev == pdev) {
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 0e8ae70..eba1ed5 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -91,7 +91,7 @@ static struct dentry *debugfs_dir;
/* Translate memory window 0,1 to BAR 2,4 */
#define MW_TO_BAR(mw) (mw * NTB_MAX_NUM_MW + 2)
-static DEFINE_PCI_DEVICE_TABLE(ntb_pci_tbl) = {
+static const struct pci_device_id ntb_pci_tbl[] = {
{PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_NTB_B2B_BWD)},
{PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_NTB_B2B_JSF)},
{PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_NTB_B2B_SNB)},
@@ -120,7 +120,8 @@ MODULE_DEVICE_TABLE(pci, ntb_pci_tbl);
* RETURNS: An appropriate -ERRNO error value on error, or zero for success.
*/
int ntb_register_event_callback(struct ntb_device *ndev,
- void (*func)(void *handle, enum ntb_hw_event event))
+ void (*func)(void *handle,
+ enum ntb_hw_event event))
{
if (ndev->event_cb)
return -EINVAL;
@@ -715,9 +716,9 @@ static int ntb_xeon_setup(struct ntb_device *ndev)
SNB_PBAR4LMT_OFFSET);
/* HW errata on the Limit registers. They can only be
* written when the base register is 4GB aligned and
- * < 32bit. This should already be the case based on the
- * driver defaults, but write the Limit registers first
- * just in case.
+ * < 32bit. This should already be the case based on
+ * the driver defaults, but write the Limit registers
+ * first just in case.
*/
} else {
ndev->limits.max_mw = SNB_MAX_MW;
@@ -739,9 +740,9 @@ static int ntb_xeon_setup(struct ntb_device *ndev)
writeq(0, ndev->reg_base + SNB_PBAR4LMT_OFFSET);
/* HW errata on the Limit registers. They can only be
* written when the base register is 4GB aligned and
- * < 32bit. This should already be the case based on the
- * driver defaults, but write the Limit registers first
- * just in case.
+ * < 32bit. This should already be the case based on
+ * the driver defaults, but write the Limit registers
+ * first just in case.
*/
}
@@ -803,7 +804,7 @@ static int ntb_xeon_setup(struct ntb_device *ndev)
ndev->conn_type = NTB_CONN_RP;
if (xeon_errata_workaround) {
- dev_err(&ndev->pdev->dev,
+ dev_err(&ndev->pdev->dev,
"NTB-RP disabled due to hardware errata. To disregard this warning and potentially lock-up the system, add the parameter 'xeon_errata_workaround=0'.\n");
return -EINVAL;
}
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h
index d1960ff..923a0fb 100644
--- a/drivers/ntb/ntb_hw.h
+++ b/drivers/ntb/ntb_hw.h
@@ -231,7 +231,7 @@ int ntb_register_db_callback(struct ntb_device *ndev, unsigned int idx,
int db_num));
void ntb_unregister_db_callback(struct ntb_device *ndev, unsigned int idx);
int ntb_register_event_callback(struct ntb_device *ndev,
- void (*event_cb_func) (void *handle,
+ void (*event_cb_func)(void *handle,
enum ntb_hw_event event));
void ntb_unregister_event_callback(struct ntb_device *ndev);
int ntb_get_max_spads(struct ntb_device *ndev);
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index 042fb3d..9dd63b8 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -106,8 +106,8 @@ struct ntb_transport_qp {
struct ntb_rx_info __iomem *rx_info;
struct ntb_rx_info *remote_rx_info;
- void (*tx_handler) (struct ntb_transport_qp *qp, void *qp_data,
- void *data, int len);
+ void (*tx_handler)(struct ntb_transport_qp *qp, void *qp_data,
+ void *data, int len);
struct list_head tx_free_q;
spinlock_t ntb_tx_free_q_lock;
void __iomem *tx_mw;
@@ -116,8 +116,8 @@ struct ntb_transport_qp {
unsigned int tx_max_entry;
unsigned int tx_max_frame;
- void (*rx_handler) (struct ntb_transport_qp *qp, void *qp_data,
- void *data, int len);
+ void (*rx_handler)(struct ntb_transport_qp *qp, void *qp_data,
+ void *data, int len);
struct list_head rx_pend_q;
struct list_head rx_free_q;
spinlock_t ntb_rx_pend_q_lock;
@@ -128,7 +128,7 @@ struct ntb_transport_qp {
unsigned int rx_max_frame;
dma_cookie_t last_cookie;
- void (*event_handler) (void *data, int status);
+ void (*event_handler)(void *data, int status);
struct delayed_work link_work;
struct work_struct link_cleanup;
@@ -479,7 +479,7 @@ static void ntb_list_add(spinlock_t *lock, struct list_head *entry,
}
static struct ntb_queue_entry *ntb_list_rm(spinlock_t *lock,
- struct list_head *list)
+ struct list_head *list)
{
struct ntb_queue_entry *entry;
unsigned long flags;
@@ -838,7 +838,7 @@ static void ntb_qp_link_work(struct work_struct *work)
}
static int ntb_transport_init_queue(struct ntb_transport *nt,
- unsigned int qp_num)
+ unsigned int qp_num)
{
struct ntb_transport_qp *qp;
unsigned int num_qps_mw, tx_size;
@@ -1054,7 +1054,7 @@ static void ntb_async_rx(struct ntb_queue_entry *entry, void *offset,
if (!chan)
goto err;
- if (len < copy_bytes)
+ if (len < copy_bytes)
goto err_wait;
device = chan->device;
@@ -1189,8 +1189,7 @@ out:
return 0;
err:
- ntb_list_add(&qp->ntb_rx_pend_q_lock, &entry->entry,
- &qp->rx_pend_q);
+ ntb_list_add(&qp->ntb_rx_pend_q_lock, &entry->entry, &qp->rx_pend_q);
/* Ensure that the data is fully copied out before clearing the flag */
wmb();
hdr->flags = 0;
diff --git a/include/linux/ntb.h b/include/linux/ntb.h
index cbc792c..9ac1a62 100644
--- a/include/linux/ntb.h
+++ b/include/linux/ntb.h
@@ -50,8 +50,8 @@ struct ntb_transport_qp;
struct ntb_client {
struct device_driver driver;
- int (*probe) (struct pci_dev *pdev);
- void (*remove) (struct pci_dev *pdev);
+ int (*probe)(struct pci_dev *pdev);
+ void (*remove)(struct pci_dev *pdev);
};
enum {
@@ -65,11 +65,11 @@ int ntb_register_client_dev(char *device_name);
void ntb_unregister_client_dev(char *device_name);
struct ntb_queue_handlers {
- void (*rx_handler) (struct ntb_transport_qp *qp, void *qp_data,
- void *data, int len);
- void (*tx_handler) (struct ntb_transport_qp *qp, void *qp_data,
- void *data, int len);
- void (*event_handler) (void *data, int status);
+ void (*rx_handler)(struct ntb_transport_qp *qp, void *qp_data,
+ void *data, int len);
+ void (*tx_handler)(struct ntb_transport_qp *qp, void *qp_data,
+ void *data, int len);
+ void (*event_handler)(void *data, int status);
};
unsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp);
--
1.8.3.2
In ntb_netdev_open, when ntb_transport_rx_enqueue fails the skb that was
attempting to be enqueued is not freed. Free this skb on the
ntb_transport_rx_enqueue error.
Signed-off-by: Jon Mason <[email protected]>
---
drivers/net/ntb_netdev.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
index 8298880..8e6752f 100644
--- a/drivers/net/ntb_netdev.c
+++ b/drivers/net/ntb_netdev.c
@@ -182,8 +182,10 @@ static int ntb_netdev_open(struct net_device *ndev)
rc = ntb_transport_rx_enqueue(dev->qp, skb, skb->data,
ndev->mtu + ETH_HLEN);
- if (rc == -EINVAL)
+ if (rc == -EINVAL) {
+ dev_kfree_skb(skb);
goto err;
+ }
}
netif_carrier_off(ndev);
--
1.8.3.2
From: Alexander Gordeev <[email protected]>
As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range() or pci_enable_msi_exact()
and pci_enable_msix_range() or pci_enable_msix_exact()
interfaces.
Signed-off-by: Alexander Gordeev <[email protected]>
Signed-off-by: Jon Mason <[email protected]>
---
drivers/ntb/ntb_hw.c | 20 +++++---------------
1 file changed, 5 insertions(+), 15 deletions(-)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 22a7eb4..372e08c 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -1089,11 +1089,9 @@ static int ntb_setup_snb_msix(struct ntb_device *ndev, int msix_entries)
if (msix_entries < ndev->limits.msix_cnt)
return -ENOSPC;
- rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries);
+ rc = pci_enable_msix_exact(pdev, ndev->msix_entries, msix_entries);
if (rc < 0)
return rc;
- else if (rc > 0)
- return -ENOSPC;
for (i = 0; i < msix_entries; i++) {
msix = &ndev->msix_entries[i];
@@ -1139,18 +1137,10 @@ static int ntb_setup_bwd_msix(struct ntb_device *ndev, int msix_entries)
struct msix_entry *msix;
int rc, i;
-retry:
- rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries);
- if (rc < 0)
- return rc;
- else if (rc > 0) {
- dev_warn(&pdev->dev,
- "Only %d MSI-X vectors. "
- "Limiting the number of queues to that number.\n",
- rc);
- msix_entries = rc;
- goto retry;
- }
+ msix_entries = pci_enable_msix_range(pdev, ndev->msix_entries,
+ 1, msix_entries);
+ if (msix_entries < 0)
+ return msix_entries;
for (i = 0; i < msix_entries; i++) {
msix = &ndev->msix_entries[i];
--
1.8.3.2
Provide a better event interface between the client and transport
Signed-off-by: Jon Mason <[email protected]>
---
drivers/net/ntb_netdev.c | 16 ++++++++++++----
drivers/ntb/ntb_hw.h | 4 +---
drivers/ntb/ntb_transport.c | 1 -
include/linux/ntb.h | 5 +++++
4 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
index 8e6752f..14570b2 100644
--- a/drivers/net/ntb_netdev.c
+++ b/drivers/net/ntb_netdev.c
@@ -78,11 +78,19 @@ static void ntb_netdev_event_handler(void *data, int status)
netdev_dbg(ndev, "Event %x, Link %x\n", status,
ntb_transport_link_query(dev->qp));
- /* Currently, only link status event is supported */
- if (status)
- netif_carrier_on(ndev);
- else
+ switch (status) {
+ case NTB_LINK_DOWN:
netif_carrier_off(ndev);
+ break;
+ case NTB_LINK_UP:
+ if (!ntb_transport_link_query(dev->qp))
+ return;
+
+ netif_carrier_on(ndev);
+ break;
+ default:
+ netdev_warn(ndev, "Unsupported event type %d\n", status);
+ }
}
static void ntb_netdev_rx_handler(struct ntb_transport_qp *qp, void *qp_data,
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h
index bbdb7ed..d1960ff 100644
--- a/drivers/ntb/ntb_hw.h
+++ b/drivers/ntb/ntb_hw.h
@@ -45,6 +45,7 @@
* Contact Information:
* Jon Mason <[email protected]>
*/
+#include <linux/ntb.h>
#define PCI_DEVICE_ID_INTEL_NTB_B2B_JSF 0x3725
#define PCI_DEVICE_ID_INTEL_NTB_PS_JSF 0x3726
@@ -83,9 +84,6 @@ static inline void writeq(u64 val, void __iomem *addr)
#define NTB_BAR_MASK ((1 << NTB_BAR_MMIO) | (1 << NTB_BAR_23) |\
(1 << NTB_BAR_45))
-#define NTB_LINK_DOWN 0
-#define NTB_LINK_UP 1
-
#define NTB_HB_TIMEOUT msecs_to_jiffies(1000)
#define NTB_MAX_NUM_MW 2
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index 3217f39..042fb3d 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -56,7 +56,6 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/types.h>
-#include <linux/ntb.h>
#include "ntb_hw.h"
#define NTB_TRANSPORT_VERSION 3
diff --git a/include/linux/ntb.h b/include/linux/ntb.h
index f6a1520..cbc792c 100644
--- a/include/linux/ntb.h
+++ b/include/linux/ntb.h
@@ -54,6 +54,11 @@ struct ntb_client {
void (*remove) (struct pci_dev *pdev);
};
+enum {
+ NTB_LINK_DOWN = 0,
+ NTB_LINK_UP,
+};
+
int ntb_register_client(struct ntb_client *drvr);
void ntb_unregister_client(struct ntb_client *drvr);
int ntb_register_client_dev(char *device_name);
--
1.8.3.2
If list_for_each_entry exits without finding the ntb_device, the dev
pointer will not be NULL. Thus the check will never be true and the
code will not exit when it should. Correct this by adding a bool to
determine when the device is found, otherwise exit in good fashion.
Signed-off-by: Jon Mason <[email protected]>
---
drivers/net/ntb_netdev.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
index f3cdf64..8298880 100644
--- a/drivers/net/ntb_netdev.c
+++ b/drivers/net/ntb_netdev.c
@@ -367,12 +367,15 @@ static void ntb_netdev_remove(struct pci_dev *pdev)
{
struct net_device *ndev;
struct ntb_netdev *dev;
+ bool found = false;
list_for_each_entry(dev, &dev_list, list) {
- if (dev->pdev == pdev)
+ if (dev->pdev == pdev) {
+ found = true;
break;
+ }
}
- if (dev == NULL)
+ if (!found)
return;
list_del(&dev->list);
--
1.8.3.2
From: Roland Dreier <[email protected]>
In the code for Xeon devices in back-to-back mode with xeon_errata_workaround
disabled, the downstream device puts the wrong value in SNB_B2B_XLAT_OFFSETL
(SNB_MBAR01_DSD_ADDR vs. SNB_MBAR01_USD_ADDR).
This was spotted while reading code, since the typo has no practical effect,
at least for now: the low 32 bits of both constants are actually identical
anyway. However, it's clearer and safer to use the right name.
Signed-off-by: Roland Dreier <[email protected]>
Signed-off-by: Jon Mason <[email protected]>
---
drivers/ntb/ntb_hw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 170e8e6..2774d35 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -785,7 +785,7 @@ static int ntb_xeon_setup(struct ntb_device *ndev)
/* B2B_XLAT_OFFSET is a 64bit register, but can
* only take 32bit writes
*/
- writel(SNB_MBAR01_DSD_ADDR & 0xffffffff,
+ writel(SNB_MBAR01_USD_ADDR & 0xffffffff,
ndev->reg_base + SNB_B2B_XLAT_OFFSETL);
writel(SNB_MBAR01_USD_ADDR >> 32,
ndev->reg_base + SNB_B2B_XLAT_OFFSETU);
--
1.8.3.2
From: Alexander Gordeev <[email protected]>
Signed-off-by: Alexander Gordeev <[email protected]>
Signed-off-by: Jon Mason <[email protected]>
---
drivers/ntb/ntb_hw.c | 15 ++++-----------
drivers/ntb/ntb_hw.h | 2 --
2 files changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index eba1ed5..06d605c 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -1086,19 +1086,12 @@ static int ntb_setup_msix(struct ntb_device *ndev)
struct msix_entry *msix;
int msix_entries;
int rc, i;
- u16 val;
- if (!pdev->msix_cap) {
- rc = -EIO;
- goto err;
- }
-
- rc = pci_read_config_word(pdev, pdev->msix_cap + PCI_MSIX_FLAGS, &val);
- if (rc)
+ msix_entries = pci_msix_vec_count(pdev);
+ if (msix_entries < 0) {
+ rc = msix_entries;
goto err;
-
- msix_entries = msix_table_size(val);
- if (msix_entries > ndev->limits.msix_cnt) {
+ } else if (msix_entries > ndev->limits.msix_cnt) {
rc = -EINVAL;
goto err;
}
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h
index 923a0fb..465517b 100644
--- a/drivers/ntb/ntb_hw.h
+++ b/drivers/ntb/ntb_hw.h
@@ -61,8 +61,6 @@
#define PCI_DEVICE_ID_INTEL_NTB_SS_HSX 0x2F0F
#define PCI_DEVICE_ID_INTEL_NTB_B2B_BWD 0x0C4E
-#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1)
-
#ifndef readq
static inline u64 readq(void __iomem *addr)
{
--
1.8.3.2
From: Alexander Gordeev <[email protected]>
This is an cleanup effort to make ntb_setup_msix() more
readable - use ntb_setup_bwd_msix() to init MSI-Xs on
BWD hardware and ntb_setup_snb_msix() - on SNB hardware.
Function ntb_setup_snb_msix() also initializes MSI-Xs the
way it should has been done - looping pci_enable_msix()
until success or failure.
Signed-off-by: Alexander Gordeev <[email protected]>
Signed-off-by: Jon Mason <[email protected]>
---
drivers/ntb/ntb_hw.c | 167 +++++++++++++++++++++++++++++++--------------------
1 file changed, 102 insertions(+), 65 deletions(-)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 06d605c..22a7eb4 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -1080,10 +1080,106 @@ static irqreturn_t ntb_interrupt(int irq, void *dev)
return IRQ_HANDLED;
}
-static int ntb_setup_msix(struct ntb_device *ndev)
+static int ntb_setup_snb_msix(struct ntb_device *ndev, int msix_entries)
{
struct pci_dev *pdev = ndev->pdev;
struct msix_entry *msix;
+ int rc, i;
+
+ if (msix_entries < ndev->limits.msix_cnt)
+ return -ENOSPC;
+
+ rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries);
+ if (rc < 0)
+ return rc;
+ else if (rc > 0)
+ return -ENOSPC;
+
+ for (i = 0; i < msix_entries; i++) {
+ msix = &ndev->msix_entries[i];
+ WARN_ON(!msix->vector);
+
+ if (i == msix_entries - 1) {
+ rc = request_irq(msix->vector,
+ xeon_event_msix_irq, 0,
+ "ntb-event-msix", ndev);
+ if (rc)
+ goto err;
+ } else {
+ rc = request_irq(msix->vector,
+ xeon_callback_msix_irq, 0,
+ "ntb-callback-msix",
+ &ndev->db_cb[i]);
+ if (rc)
+ goto err;
+ }
+ }
+
+ ndev->num_msix = msix_entries;
+ ndev->max_cbs = msix_entries - 1;
+
+ return 0;
+
+err:
+ while (--i >= 0) {
+ /* Code never reaches here for entry nr 'ndev->num_msix - 1' */
+ msix = &ndev->msix_entries[i];
+ free_irq(msix->vector, &ndev->db_cb[i]);
+ }
+
+ pci_disable_msix(pdev);
+ ndev->num_msix = 0;
+
+ return rc;
+}
+
+static int ntb_setup_bwd_msix(struct ntb_device *ndev, int msix_entries)
+{
+ struct pci_dev *pdev = ndev->pdev;
+ struct msix_entry *msix;
+ int rc, i;
+
+retry:
+ rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries);
+ if (rc < 0)
+ return rc;
+ else if (rc > 0) {
+ dev_warn(&pdev->dev,
+ "Only %d MSI-X vectors. "
+ "Limiting the number of queues to that number.\n",
+ rc);
+ msix_entries = rc;
+ goto retry;
+ }
+
+ for (i = 0; i < msix_entries; i++) {
+ msix = &ndev->msix_entries[i];
+ WARN_ON(!msix->vector);
+
+ rc = request_irq(msix->vector, bwd_callback_msix_irq, 0,
+ "ntb-callback-msix", &ndev->db_cb[i]);
+ if (rc)
+ goto err;
+ }
+
+ ndev->num_msix = msix_entries;
+ ndev->max_cbs = msix_entries;
+
+ return 0;
+
+err:
+ while (--i >= 0)
+ free_irq(msix->vector, &ndev->db_cb[i]);
+
+ pci_disable_msix(pdev);
+ ndev->num_msix = 0;
+
+ return rc;
+}
+
+static int ntb_setup_msix(struct ntb_device *ndev)
+{
+ struct pci_dev *pdev = ndev->pdev;
int msix_entries;
int rc, i;
@@ -1106,78 +1202,19 @@ static int ntb_setup_msix(struct ntb_device *ndev)
for (i = 0; i < msix_entries; i++)
ndev->msix_entries[i].entry = i;
- rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries);
- if (rc < 0)
- goto err1;
- if (rc > 0) {
- /* On SNB, the link interrupt is always tied to 4th vector. If
- * we can't get all 4, then we can't use MSI-X.
- */
- if (ndev->hw_type != BWD_HW) {
- rc = -EIO;
- goto err1;
- }
-
- dev_warn(&pdev->dev,
- "Only %d MSI-X vectors. Limiting the number of queues to that number.\n",
- rc);
- msix_entries = rc;
-
- rc = pci_enable_msix(pdev, ndev->msix_entries, msix_entries);
- if (rc)
- goto err1;
- }
-
- for (i = 0; i < msix_entries; i++) {
- msix = &ndev->msix_entries[i];
- WARN_ON(!msix->vector);
-
- /* Use the last MSI-X vector for Link status */
- if (ndev->hw_type == BWD_HW) {
- rc = request_irq(msix->vector, bwd_callback_msix_irq, 0,
- "ntb-callback-msix", &ndev->db_cb[i]);
- if (rc)
- goto err2;
- } else {
- if (i == msix_entries - 1) {
- rc = request_irq(msix->vector,
- xeon_event_msix_irq, 0,
- "ntb-event-msix", ndev);
- if (rc)
- goto err2;
- } else {
- rc = request_irq(msix->vector,
- xeon_callback_msix_irq, 0,
- "ntb-callback-msix",
- &ndev->db_cb[i]);
- if (rc)
- goto err2;
- }
- }
- }
-
- ndev->num_msix = msix_entries;
if (ndev->hw_type == BWD_HW)
- ndev->max_cbs = msix_entries;
+ rc = ntb_setup_bwd_msix(ndev, msix_entries);
else
- ndev->max_cbs = msix_entries - 1;
+ rc = ntb_setup_snb_msix(ndev, msix_entries);
+ if (rc)
+ goto err1;
return 0;
-err2:
- while (--i >= 0) {
- msix = &ndev->msix_entries[i];
- if (ndev->hw_type != BWD_HW && i == ndev->num_msix - 1)
- free_irq(msix->vector, ndev);
- else
- free_irq(msix->vector, &ndev->db_cb[i]);
- }
- pci_disable_msix(pdev);
err1:
kfree(ndev->msix_entries);
- dev_err(&pdev->dev, "Error allocating MSI-X interrupt\n");
err:
- ndev->num_msix = 0;
+ dev_err(&pdev->dev, "Error allocating MSI-X interrupt\n");
return rc;
}
--
1.8.3.2
From: Alexander Gordeev <[email protected]>
Signed-off-by: Alexander Gordeev <[email protected]>
Signed-off-by: Jon Mason <[email protected]>
---
drivers/ntb/ntb_hw.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 2774d35..0e8ae70 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -1281,6 +1281,7 @@ static void ntb_free_interrupts(struct ntb_device *ndev)
free_irq(msix->vector, &ndev->db_cb[i]);
}
pci_disable_msix(pdev);
+ kfree(ndev->msix_entries);
} else {
free_irq(pdev->irq, ndev);
--
1.8.3.2