On 12/02/2016 10:44 PM, Himanshu Madhani wrote:
> From: Michael Hernandez <michael.hernandez@xxxxxxxxxx>
>
> Replaces the old pci_enable_msi[x]* and pci_disable_msi[x] calls.
>
> Signed-off-by: Michael Hernandez <michael.hernandez@xxxxxxxxxx>
> Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
> ---
> drivers/scsi/qla2xxx/qla_def.h | 1 +
> drivers/scsi/qla2xxx/qla_isr.c | 81 +++++++++++++++---------------------------
> 2 files changed, 30 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
> index 9a6ddcb..53021b5 100644
> --- a/drivers/scsi/qla2xxx/qla_def.h
> +++ b/drivers/scsi/qla2xxx/qla_def.h
> @@ -2748,6 +2748,7 @@ struct qla_msix_entry {
> uint32_t vector;
> uint16_t entry;
> struct rsp_que *rsp;
> + void *handle;
> struct irq_affinity_notify irq_notify;
> int cpuid;
> };
> diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
> index 19f1848..16e7601 100644
> --- a/drivers/scsi/qla2xxx/qla_isr.c
> +++ b/drivers/scsi/qla2xxx/qla_isr.c
> @@ -3025,52 +3025,17 @@ struct qla_init_msix_entry {
> { "qla2xxx (atio_q)", qla83xx_msix_atio_q },
> };
>
> -static void
> -qla24xx_disable_msix(struct qla_hw_data *ha)
> -{
> - int i;
> - struct qla_msix_entry *qentry;
> - scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
> -
> - for (i = 0; i < ha->msix_count; i++) {
> - qentry = &ha->msix_entries[i];
> - if (qentry->have_irq) {
> - /* un-register irq cpu affinity notification */
> - irq_set_affinity_notifier(qentry->vector, NULL);
> - free_irq(qentry->vector, qentry->rsp);
> - }
> - }
> - pci_disable_msix(ha->pdev);
> - kfree(ha->msix_entries);
> - ha->msix_entries = NULL;
> - ha->flags.msix_enabled = 0;
> - ql_dbg(ql_dbg_init, vha, 0x0042,
> - "Disabled the MSI.\n");
> -}
> -
> static int
> qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
> {
> #define MIN_MSIX_COUNT 2
> #define ATIO_VECTOR 2
> int i, ret;
> - struct msix_entry *entries;
> struct qla_msix_entry *qentry;
> scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
>
> - entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
> - GFP_KERNEL);
> - if (!entries) {
> - ql_log(ql_log_warn, vha, 0x00bc,
> - "Failed to allocate memory for msix_entry.\n");
> - return -ENOMEM;
> - }
> -
> - for (i = 0; i < ha->msix_count; i++)
> - entries[i].entry = i;
> -
> - ret = pci_enable_msix_range(ha->pdev,
> - entries, MIN_MSIX_COUNT, ha->msix_count);
> + ret = pci_alloc_irq_vectors(ha->pdev,
> + MIN_MSIX_COUNT, ha->msix_count, PCI_IRQ_MSIX|PCI_IRQ_AFFINITY);
> if (ret < 0) {
> ql_log(ql_log_fatal, vha, 0x00c7,
> "MSI-X: Failed to enable support, "
> @@ -3097,10 +3062,10 @@ struct qla_init_msix_entry {
>
> for (i = 0; i < ha->msix_count; i++) {
> qentry = &ha->msix_entries[i];
> - qentry->vector = entries[i].vector;
> - qentry->entry = entries[i].entry;
> + qentry->vector = pci_irq_vector(ha->pdev, i);
> + qentry->entry = i;
> qentry->have_irq = 0;
> - qentry->rsp = NULL;
> + qentry->handle = NULL;
> qentry->irq_notify.notify = qla_irq_affinity_notify;
> qentry->irq_notify.release = qla_irq_affinity_release;
> qentry->cpuid = -1;
> @@ -3109,7 +3074,7 @@ struct qla_init_msix_entry {
> /* Enable MSI-X vectors for the base queue */
> for (i = 0; i < 2; i++) {
> qentry = &ha->msix_entries[i];
> - qentry->rsp = rsp;
> + qentry->handle = rsp;
> rsp->msix = qentry;
> if (IS_P3P_TYPE(ha))
> ret = request_irq(qentry->vector,
> @@ -3142,7 +3107,7 @@ struct qla_init_msix_entry {
> */
> if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
> qentry = &ha->msix_entries[ATIO_VECTOR];
> - qentry->rsp = rsp;
> + qentry->handle = rsp;
> rsp->msix = qentry;
> ret = request_irq(qentry->vector,
> qla83xx_msix_entries[ATIO_VECTOR].handler,
> @@ -3155,7 +3120,7 @@ struct qla_init_msix_entry {
> ql_log(ql_log_fatal, vha, 0x00cb,
> "MSI-X: unable to register handler -- %x/%d.\n",
> qentry->vector, ret);
> - qla24xx_disable_msix(ha);
> + qla2x00_free_irqs(vha);
> ha->mqenable = 0;
> goto msix_out;
> }
> @@ -3177,7 +3142,6 @@ struct qla_init_msix_entry {
> ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
>
> msix_out:
> - kfree(entries);
> return ret;
> }
>
> @@ -3230,7 +3194,7 @@ struct qla_init_msix_entry {
> !IS_QLA27XX(ha))
> goto skip_msi;
>
> - ret = pci_enable_msi(ha->pdev);
> + ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
> if (!ret) {
> ql_dbg(ql_dbg_init, vha, 0x0038,
> "MSI: Enabled.\n");
> @@ -3275,6 +3239,8 @@ struct qla_init_msix_entry {
> {
> struct qla_hw_data *ha = vha->hw;
> struct rsp_que *rsp;
> + struct qla_msix_entry *qentry;
> + int i;
>
> /*
> * We need to check that ha->rsp_q_map is valid in case we are called
> @@ -3284,13 +3250,24 @@ struct qla_init_msix_entry {
> return;
> rsp = ha->rsp_q_map[0];
>
> - if (ha->flags.msix_enabled)
> - qla24xx_disable_msix(ha);
> - else if (ha->flags.msi_enabled) {
> - free_irq(ha->pdev->irq, rsp);
> - pci_disable_msi(ha->pdev);
> - } else
> - free_irq(ha->pdev->irq, rsp);
> + if (ha->flags.msix_enabled) {
> + for (i = 0; i < ha->msix_count; i++) {
> + qentry = &ha->msix_entries[i];
> + if (qentry->have_irq) {
> + irq_set_affinity_notifier(qentry->vector, NULL);
Not sure if that's still required; with the new irq affinity framework I
guess you can drop it.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@xxxxxxx +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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