#include <asm/io.h>
#include <asm/smp.h>
+#include "pci.h"
#include "msi.h"
-static spinlock_t msi_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(msi_lock);
static struct msi_desc* msi_desc[NR_IRQS] = { [0 ... NR_IRQS-1] = NULL };
static kmem_cache_t* msi_cachep;
int pos;
u32 mask_bits;
- pos = (int)entry->mask_base;
+ pos = (long)entry->mask_base;
pci_read_config_dword(entry->dev, pos, &mask_bits);
mask_bits &= ~(1);
mask_bits |= flag;
if (!status)
return status;
+ if (pci_msi_quirk) {
+ pci_msi_enable = 0;
+ printk(KERN_WARNING "PCI: MSI quirk detected. MSI disabled.\n");
+ status = -EINVAL;
+ return status;
+ }
+
if ((status = msi_cache_init()) < 0) {
pci_msi_enable = 0;
- printk(KERN_INFO "WARNING: MSI INIT FAILURE\n");
+ printk(KERN_WARNING "PCI: MSI cache init failed\n");
return status;
}
last_alloc_vector = assign_irq_vector(AUTO_ASSIGN);
if (last_alloc_vector < 0) {
pci_msi_enable = 0;
- printk(KERN_INFO "WARNING: ALL VECTORS ARE BUSY\n");
+ printk(KERN_WARNING "PCI: No interrupt vectors available for MSI\n");
status = -EBUSY;
return status;
}
vector_irq[last_alloc_vector] = 0;
nr_released_vectors++;
- printk(KERN_INFO "MSI INIT SUCCESS\n");
return status;
}
* msi_capability_init - configure device's MSI capability structure
* @dev: pointer to the pci_dev data structure of MSI device function
*
- * Setup the MSI capability structure of device funtion with a single
+ * Setup the MSI capability structure of device function with a single
* MSI vector, regardless of device function is capable of handling
* multiple messages. A return of zero indicates the successful setup
* of an entry zero with the new MSI vector or non-zero for otherwise.
dev->irq = vector;
entry->dev = dev;
if (is_mask_bit_support(control)) {
- entry->mask_base = (void __iomem *)msi_mask_bits_reg(pos,
+ entry->mask_base = (void __iomem *)(long)msi_mask_bits_reg(pos,
is_64bit_address(control));
}
/* Replace with MSI handler */
* msix_capability_init - configure device's MSI-X capability
* @dev: pointer to the pci_dev data structure of MSI-X device function
*
- * Setup the MSI-X capability structure of device funtion with a
+ * Setup the MSI-X capability structure of device function with a
* single MSI-X vector. A return of zero indicates the successful setup of
* requested MSI-X entries with allocated vectors or non-zero for otherwise.
**/
bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
phys_addr = pci_resource_start (dev, bir);
phys_addr += (u32)(table_offset & ~PCI_MSIX_FLAGS_BIRMASK);
- if (!request_mem_region(phys_addr,
- nr_entries * PCI_MSIX_ENTRY_SIZE,
- "MSI-X vector table"))
- return -ENOMEM;
base = ioremap_nocache(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE);
- if (base == NULL) {
- release_mem_region(phys_addr, nr_entries * PCI_MSIX_ENTRY_SIZE);
+ if (base == NULL)
return -ENOMEM;
- }
+
/* MSI-X Table Initialization */
for (i = 0; i < nvec; i++) {
entry = alloc_msi_entry();
**/
int pci_enable_msi(struct pci_dev* dev)
{
- int pos, temp = dev->irq, status = -EINVAL;
+ int pos, temp, status = -EINVAL;
u16 control;
if (!pci_msi_enable || !dev)
return status;
+ temp = dev->irq;
+
if ((status = msi_init()) < 0)
return status;
/* Check whether driver already requested for MSI-X vectors */
if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSIX)) > 0 &&
!msi_lookup_vector(dev, PCI_CAP_ID_MSIX)) {
- printk(KERN_INFO "Can't enable MSI. Device already had MSI-X vectors assigned\n");
+ printk(KERN_INFO "PCI: %s: Can't enable MSI. "
+ "Device already has MSI-X vectors assigned\n",
+ pci_name(dev));
dev->irq = temp;
return -EINVAL;
}
}
if (entry->msi_attrib.state) {
spin_unlock_irqrestore(&msi_lock, flags);
- printk(KERN_DEBUG "Driver[%d:%d:%d] unloaded wo doing free_irq on vector->%d\n",
- dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn),
- dev->irq);
+ printk(KERN_WARNING "PCI: %s: pci_disable_msi() called without "
+ "free_irq() on MSI vector %d\n",
+ pci_name(dev), dev->irq);
BUG_ON(entry->msi_attrib.state > 0);
} else {
vector_irq[dev->irq] = 0; /* free it */
phys_addr += (u32)(table_offset &
~PCI_MSIX_FLAGS_BIRMASK);
iounmap(base);
- release_mem_region(phys_addr,
- nr_entries * PCI_MSIX_ENTRY_SIZE);
}
}
/* Check whether driver already requested for MSI vector */
if (pci_find_capability(dev, PCI_CAP_ID_MSI) > 0 &&
!msi_lookup_vector(dev, PCI_CAP_ID_MSI)) {
- printk(KERN_INFO "Can't enable MSI-X. Device already had MSI vector assigned\n");
+ printk(KERN_INFO "PCI: %s: Can't enable MSI-X. "
+ "Device already has an MSI vector assigned\n",
+ pci_name(dev));
dev->irq = temp;
return -EINVAL;
}
spin_unlock_irqrestore(&msi_lock, flags);
if (warning) {
dev->irq = temp;
- printk(KERN_DEBUG "Driver[%d:%d:%d] unloaded wo doing free_irq on all vectors\n",
- dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn));
+ printk(KERN_WARNING "PCI: %s: pci_disable_msix() called without "
+ "free_irq() on all MSI-X vectors\n",
+ pci_name(dev));
BUG_ON(warning > 0);
} else {
dev->irq = temp;
* msi_remove_pci_irq_vectors - reclaim MSI(X) vectors to unused state
* @dev: pointer to the pci_dev data structure of MSI(X) device function
*
- * Being called during hotplug remove, from which the device funciton
+ * Being called during hotplug remove, from which the device function
* is hot-removed. All previous assigned MSI/MSI-X vectors, if
* allocated for this device function, are reclaimed to unused state,
* which may be used later on.
state = msi_desc[dev->irq]->msi_attrib.state;
spin_unlock_irqrestore(&msi_lock, flags);
if (state) {
- printk(KERN_DEBUG "Driver[%d:%d:%d] unloaded wo doing free_irq on vector->%d\n",
- dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn), dev->irq);
+ printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
+ "called without free_irq() on MSI vector %d\n",
+ pci_name(dev), dev->irq);
BUG_ON(state > 0);
} else /* Release MSI vector assigned to this device */
msi_free_vector(dev, dev->irq, 0);
phys_addr += (u32)(table_offset &
~PCI_MSIX_FLAGS_BIRMASK);
iounmap(base);
- release_mem_region(phys_addr, PCI_MSIX_ENTRY_SIZE *
- multi_msix_capable(control));
- printk(KERN_DEBUG "Driver[%d:%d:%d] unloaded wo doing free_irq on all vectors\n",
- dev->bus->number, PCI_SLOT(dev->devfn),
- PCI_FUNC(dev->devfn));
+ printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
+ "called without free_irq() on all MSI-X vectors\n",
+ pci_name(dev));
BUG_ON(warning > 0);
}
dev->irq = temp; /* Restore IOAPIC IRQ */
git://git.onelab.eu / linux-2.6.git / blobdiff