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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/scsi/aacraid/commsup.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/scsi/aacraid/commsup.c')
-rw-r--r--kernel/drivers/scsi/aacraid/commsup.c113
1 files changed, 82 insertions, 31 deletions
diff --git a/kernel/drivers/scsi/aacraid/commsup.c b/kernel/drivers/scsi/aacraid/commsup.c
index 4da574925..a1f90fe84 100644
--- a/kernel/drivers/scsi/aacraid/commsup.c
+++ b/kernel/drivers/scsi/aacraid/commsup.c
@@ -1270,13 +1270,12 @@ retry_next:
static int _aac_reset_adapter(struct aac_dev *aac, int forced)
{
int index, quirks;
- int retval, i;
+ int retval;
struct Scsi_Host *host;
struct scsi_device *dev;
struct scsi_cmnd *command;
struct scsi_cmnd *command_list;
int jafo = 0;
- int cpu;
/*
* Assumptions:
@@ -1339,35 +1338,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced)
aac->comm_phys = 0;
kfree(aac->queues);
aac->queues = NULL;
- cpu = cpumask_first(cpu_online_mask);
- if (aac->pdev->device == PMC_DEVICE_S6 ||
- aac->pdev->device == PMC_DEVICE_S7 ||
- aac->pdev->device == PMC_DEVICE_S8 ||
- aac->pdev->device == PMC_DEVICE_S9) {
- if (aac->max_msix > 1) {
- for (i = 0; i < aac->max_msix; i++) {
- if (irq_set_affinity_hint(
- aac->msixentry[i].vector,
- NULL)) {
- printk(KERN_ERR "%s%d: Failed to reset IRQ affinity for cpu %d\n",
- aac->name,
- aac->id,
- cpu);
- }
- cpu = cpumask_next(cpu,
- cpu_online_mask);
- free_irq(aac->msixentry[i].vector,
- &(aac->aac_msix[i]));
- }
- pci_disable_msix(aac->pdev);
- } else {
- free_irq(aac->pdev->irq, &(aac->aac_msix[0]));
- }
- } else {
- free_irq(aac->pdev->irq, aac);
- }
- if (aac->msi)
- pci_disable_msi(aac->pdev);
+ aac_free_irq(aac);
kfree(aac->fsa_dev);
aac->fsa_dev = NULL;
quirks = aac_get_driver_ident(index)->quirks;
@@ -1978,3 +1949,83 @@ int aac_command_thread(void *data)
dev->aif_thread = 0;
return 0;
}
+
+int aac_acquire_irq(struct aac_dev *dev)
+{
+ int i;
+ int j;
+ int ret = 0;
+ int cpu;
+
+ cpu = cpumask_first(cpu_online_mask);
+ if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) {
+ for (i = 0; i < dev->max_msix; i++) {
+ dev->aac_msix[i].vector_no = i;
+ dev->aac_msix[i].dev = dev;
+ if (request_irq(dev->msixentry[i].vector,
+ dev->a_ops.adapter_intr,
+ 0, "aacraid", &(dev->aac_msix[i]))) {
+ printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n",
+ dev->name, dev->id, i);
+ for (j = 0 ; j < i ; j++)
+ free_irq(dev->msixentry[j].vector,
+ &(dev->aac_msix[j]));
+ pci_disable_msix(dev->pdev);
+ ret = -1;
+ }
+ if (irq_set_affinity_hint(dev->msixentry[i].vector,
+ get_cpu_mask(cpu))) {
+ printk(KERN_ERR "%s%d: Failed to set IRQ affinity for cpu %d\n",
+ dev->name, dev->id, cpu);
+ }
+ cpu = cpumask_next(cpu, cpu_online_mask);
+ }
+ } else {
+ dev->aac_msix[0].vector_no = 0;
+ dev->aac_msix[0].dev = dev;
+
+ if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
+ IRQF_SHARED, "aacraid",
+ &(dev->aac_msix[0])) < 0) {
+ if (dev->msi)
+ pci_disable_msi(dev->pdev);
+ printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
+ dev->name, dev->id);
+ ret = -1;
+ }
+ }
+ return ret;
+}
+
+void aac_free_irq(struct aac_dev *dev)
+{
+ int i;
+ int cpu;
+
+ cpu = cpumask_first(cpu_online_mask);
+ if (dev->pdev->device == PMC_DEVICE_S6 ||
+ dev->pdev->device == PMC_DEVICE_S7 ||
+ dev->pdev->device == PMC_DEVICE_S8 ||
+ dev->pdev->device == PMC_DEVICE_S9) {
+ if (dev->max_msix > 1) {
+ for (i = 0; i < dev->max_msix; i++) {
+ if (irq_set_affinity_hint(
+ dev->msixentry[i].vector, NULL)) {
+ printk(KERN_ERR "%s%d: Failed to reset IRQ affinity for cpu %d\n",
+ dev->name, dev->id, cpu);
+ }
+ cpu = cpumask_next(cpu, cpu_online_mask);
+ free_irq(dev->msixentry[i].vector,
+ &(dev->aac_msix[i]));
+ }
+ } else {
+ free_irq(dev->pdev->irq, &(dev->aac_msix[0]));
+ }
+ } else {
+ free_irq(dev->pdev->irq, dev);
+ }
+ if (dev->msi)
+ pci_disable_msi(dev->pdev);
+ else if (dev->max_msix > 1)
+ pci_disable_msix(dev->pdev);
+}