lkml.org 
[lkml]   [2017]   [Nov]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V3 net-next] net: hns3: Updates MSI/MSI-X alloc/free APIs(depricated) to new APIs
Date
This patch migrates the HNS3 driver code from use of depricated PCI
MSI/MSI-X interrupt vector allocation/free APIs to new common APIs.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
---
PATCH V3: respin against latest net-next
PATCH V2: Yuval Shaia <yuval.shaia@oracle.com>
Link -> https://lkml.org/lkml/2017/11/9/138
PATCH V1: Initial Submit
---
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 107 +++++++--------------
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 17 ++--
2 files changed, 43 insertions(+), 81 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 781d5a8..59ed806 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -891,14 +891,14 @@ static int hclge_query_pf_resource(struct hclge_dev *hdev)
hdev->pkt_buf_size = __le16_to_cpu(req->buf_size) << HCLGE_BUF_UNIT_S;

if (hnae3_dev_roce_supported(hdev)) {
- hdev->num_roce_msix =
+ hdev->num_roce_msi =
hnae_get_field(__le16_to_cpu(req->pf_intr_vector_number),
HCLGE_PF_VEC_NUM_M, HCLGE_PF_VEC_NUM_S);

/* PF should have NIC vectors and Roce vectors,
* NIC vectors are queued before Roce vectors.
*/
- hdev->num_msi = hdev->num_roce_msix + HCLGE_ROCE_VECTOR_OFFSET;
+ hdev->num_msi = hdev->num_roce_msi + HCLGE_ROCE_VECTOR_OFFSET;
} else {
hdev->num_msi =
hnae_get_field(__le16_to_cpu(req->pf_intr_vector_number),
@@ -1950,7 +1950,7 @@ static int hclge_init_roce_base_info(struct hclge_vport *vport)
struct hnae3_handle *roce = &vport->roce;
struct hnae3_handle *nic = &vport->nic;

- roce->rinfo.num_vectors = vport->back->num_roce_msix;
+ roce->rinfo.num_vectors = vport->back->num_roce_msi;

if (vport->back->num_msi_left < vport->roce.rinfo.num_vectors ||
vport->back->num_msi_left == 0)
@@ -1968,67 +1968,47 @@ static int hclge_init_roce_base_info(struct hclge_vport *vport)
return 0;
}

-static int hclge_init_msix(struct hclge_dev *hdev)
+static int hclge_init_msi(struct hclge_dev *hdev)
{
struct pci_dev *pdev = hdev->pdev;
- int ret, i;
-
- hdev->msix_entries = devm_kcalloc(&pdev->dev, hdev->num_msi,
- sizeof(struct msix_entry),
- GFP_KERNEL);
- if (!hdev->msix_entries)
- return -ENOMEM;
-
- hdev->vector_status = devm_kcalloc(&pdev->dev, hdev->num_msi,
- sizeof(u16), GFP_KERNEL);
- if (!hdev->vector_status)
- return -ENOMEM;
+ int vectors;
+ int i;

- for (i = 0; i < hdev->num_msi; i++) {
- hdev->msix_entries[i].entry = i;
- hdev->vector_status[i] = HCLGE_INVALID_VPORT;
+ vectors = pci_alloc_irq_vectors(pdev, 1, hdev->num_msi,
+ PCI_IRQ_MSI | PCI_IRQ_MSIX);
+ if (vectors < 0) {
+ dev_err(&pdev->dev,
+ "failed(%d) to allocate MSI/MSI-X vectors\n",
+ vectors);
+ return vectors;
}
+ if (vectors < hdev->num_msi)
+ dev_warn(&hdev->pdev->dev,
+ "requested %d MSI/MSI-X, but allocated %d MSI/MSI-X\n",
+ hdev->num_msi, vectors);

- hdev->num_msi_left = hdev->num_msi;
- hdev->base_msi_vector = hdev->pdev->irq;
+ hdev->num_msi = vectors;
+ hdev->num_msi_left = vectors;
+ hdev->base_msi_vector = pdev->irq;
hdev->roce_base_vector = hdev->base_msi_vector +
HCLGE_ROCE_VECTOR_OFFSET;

- ret = pci_enable_msix_range(hdev->pdev, hdev->msix_entries,
- hdev->num_msi, hdev->num_msi);
- if (ret < 0) {
- dev_info(&hdev->pdev->dev,
- "MSI-X vector alloc failed: %d\n", ret);
- return ret;
- }
-
- return 0;
-}
-
-static int hclge_init_msi(struct hclge_dev *hdev)
-{
- struct pci_dev *pdev = hdev->pdev;
- int vectors;
- int i;
-
hdev->vector_status = devm_kcalloc(&pdev->dev, hdev->num_msi,
sizeof(u16), GFP_KERNEL);
- if (!hdev->vector_status)
+ if (!hdev->vector_status) {
+ pci_free_irq_vectors(pdev);
return -ENOMEM;
+ }

for (i = 0; i < hdev->num_msi; i++)
hdev->vector_status[i] = HCLGE_INVALID_VPORT;

- vectors = pci_alloc_irq_vectors(pdev, 1, hdev->num_msi, PCI_IRQ_MSI);
- if (vectors < 0) {
- dev_err(&pdev->dev, "MSI vectors enable failed %d\n", vectors);
- return -EINVAL;
+ hdev->vector_irq = devm_kcalloc(&pdev->dev, hdev->num_msi,
+ sizeof(int), GFP_KERNEL);
+ if (!hdev->vector_irq) {
+ pci_free_irq_vectors(pdev);
+ return -ENOMEM;
}
- hdev->num_msi = vectors;
- hdev->num_msi_left = vectors;
- hdev->base_msi_vector = pdev->irq;
- hdev->roce_base_vector = hdev->base_msi_vector +
- HCLGE_ROCE_VECTOR_OFFSET;

return 0;
}
@@ -2704,6 +2684,7 @@ static int hclge_get_vector(struct hnae3_handle *handle, u16 vector_num,
vport->vport_id *
HCLGE_VECTOR_VF_OFFSET;
hdev->vector_status[i] = vport->vport_id;
+ hdev->vector_irq[i] = vector->vector;

vector++;
alloc++;
@@ -2722,15 +2703,10 @@ static int hclge_get_vector_index(struct hclge_dev *hdev, int vector)
{
int i;

- for (i = 0; i < hdev->num_msi; i++) {
- if (hdev->msix_entries) {
- if (vector == hdev->msix_entries[i].vector)
- return i;
- } else {
- if (vector == (hdev->base_msi_vector + i))
- return i;
- }
- }
+ for (i = 0; i < hdev->num_msi; i++)
+ if (vector == hdev->vector_irq[i])
+ return i;
+
return -EINVAL;
}

@@ -4664,14 +4640,7 @@ static void hclge_pci_uninit(struct hclge_dev *hdev)
{
struct pci_dev *pdev = hdev->pdev;

- if (hdev->flag & HCLGE_FLAG_USE_MSIX) {
- pci_disable_msix(pdev);
- devm_kfree(&pdev->dev, hdev->msix_entries);
- hdev->msix_entries = NULL;
- } else {
- pci_disable_msi(pdev);
- }
-
+ pci_free_irq_vectors(pdev);
pci_clear_master(pdev);
pci_release_mem_regions(pdev);
pci_disable_device(pdev);
@@ -4689,7 +4658,6 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
goto err_hclge_dev;
}

- hdev->flag |= HCLGE_FLAG_USE_MSIX;
hdev->pdev = pdev;
hdev->ae_dev = ae_dev;
hdev->reset_type = HNAE3_NONE_RESET;
@@ -4726,12 +4694,9 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
return ret;
}

- if (hdev->flag & HCLGE_FLAG_USE_MSIX)
- ret = hclge_init_msix(hdev);
- else
- ret = hclge_init_msi(hdev);
+ ret = hclge_init_msi(hdev);
if (ret) {
- dev_err(&pdev->dev, "Init msix/msi error, ret = %d.\n", ret);
+ dev_err(&pdev->dev, "Init MSI/MSI-X error, ret = %d.\n", ret);
return ret;
}

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 742e6ee..7027814 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -425,9 +425,6 @@ struct hclge_dev {
u16 num_tqps; /* Num task queue pairs of this PF */
u16 num_req_vfs; /* Num VFs requested for this PF */

- u16 num_roce_msix; /* Num of roce vectors for this PF */
- int roce_base_vector;
-
/* Base task tqp physical id of this PF */
u16 base_tqp_pid;
u16 alloc_rss_size; /* Allocated RSS task queue */
@@ -457,8 +454,10 @@ struct hclge_dev {
u16 num_msi_left;
u16 num_msi_used;
u32 base_msi_vector;
- struct msix_entry *msix_entries;
u16 *vector_status;
+ int *vector_irq;
+ u16 num_roce_msi; /* Num of roce vectors for this PF */
+ int roce_base_vector;

u16 pending_udp_bitmap;

@@ -482,12 +481,10 @@ struct hclge_dev {
struct hnae3_client *nic_client;
struct hnae3_client *roce_client;

-#define HCLGE_FLAG_USE_MSI 0x00000001
-#define HCLGE_FLAG_USE_MSIX 0x00000002
-#define HCLGE_FLAG_MAIN 0x00000004
-#define HCLGE_FLAG_DCB_CAPABLE 0x00000008
-#define HCLGE_FLAG_DCB_ENABLE 0x00000010
-#define HCLGE_FLAG_MQPRIO_ENABLE 0x00000020
+#define HCLGE_FLAG_MAIN BIT(0)
+#define HCLGE_FLAG_DCB_CAPABLE BIT(1)
+#define HCLGE_FLAG_DCB_ENABLE BIT(2)
+#define HCLGE_FLAG_MQPRIO_ENABLE BIT(3)
u32 flag;

u32 pkt_buf_size; /* Total pf buf size for tx/rx */
--
2.7.4

\
 
 \ /
  Last update: 2017-11-13 12:41    [W:0.044 / U:1.820 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site