#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/init.h>
-#include <linux/config.h>
#include <linux/ioport.h>
#include <linux/smp_lock.h>
#include <linux/pci.h>
#ifndef CONFIG_X86_IO_APIC
int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
-u8 irq_vector[NR_IRQ_VECTORS] = { FIRST_DEVICE_VECTOR , 0 };
#endif
static struct msi_ops *msi_ops;
spin_lock_irqsave(&irq_desc[pos].lock, flags);
if (cap_id == PCI_CAP_ID_MSIX)
- irq_desc[pos].handler = &msix_irq_type;
+ irq_desc[pos].chip = &msix_irq_type;
else {
if (!mask)
- irq_desc[pos].handler = &msi_irq_wo_maskbit_type;
+ irq_desc[pos].chip = &msi_irq_wo_maskbit_type;
else
- irq_desc[pos].handler = &msi_irq_w_maskbit_type;
+ irq_desc[pos].chip = &msi_irq_w_maskbit_type;
}
spin_unlock_irqrestore(&irq_desc[pos].lock, flags);
}
/* Set enabled bits to single MSI & enable MSI_enable bit */
msi_enable(control, 1);
pci_write_config_word(dev, msi_control_reg(pos), control);
+ dev->msi_enabled = 1;
} else {
msix_enable(control);
pci_write_config_word(dev, msi_control_reg(pos), control);
+ dev->msix_enabled = 1;
}
if (pci_find_capability(dev, PCI_CAP_ID_EXP)) {
/* PCI Express Endpoint device detected */
/* Set enabled bits to single MSI & enable MSI_enable bit */
msi_disable(control);
pci_write_config_word(dev, msi_control_reg(pos), control);
+ dev->msi_enabled = 0;
} else {
msix_disable(control);
pci_write_config_word(dev, msi_control_reg(pos), control);
+ dev->msix_enabled = 0;
}
if (pci_find_capability(dev, PCI_CAP_ID_EXP)) {
/* PCI Express Endpoint device detected */
pci_read_config_dword(dev, pos + PCI_MSI_DATA_32, &cap[i++]);
if (control & PCI_MSI_FLAGS_MASKBIT)
pci_read_config_dword(dev, pos + PCI_MSI_MASK_BIT, &cap[i++]);
- disable_msi_mode(dev, pos, PCI_CAP_ID_MSI);
save_state->cap_nr = PCI_CAP_ID_MSI;
pci_add_saved_cap(dev, save_state);
return 0;
}
dev->irq = temp;
- disable_msi_mode(dev, pos, PCI_CAP_ID_MSIX);
save_state->cap_nr = PCI_CAP_ID_MSIX;
pci_add_saved_cap(dev, save_state);
return 0;
**/
int pci_enable_msi(struct pci_dev* dev)
{
+ struct pci_bus *bus;
int pos, temp, status = -EINVAL;
u16 control;
if (dev->no_msi)
return status;
- if (dev->bus->bus_flags & PCI_BUS_FLAGS_NO_MSI)
- return -EINVAL;
+ for (bus = dev->bus; bus; bus = bus->parent)
+ if (bus->bus_flags & PCI_BUS_FLAGS_NO_MSI)
+ return -EINVAL;
temp = dev->irq;
if (!pos)
return -EINVAL;
- pci_read_config_word(dev, msi_control_reg(pos), &control);
- if (control & PCI_MSI_FLAGS_ENABLE)
- return 0; /* Already in MSI mode */
-
if (!msi_lookup_vector(dev, PCI_CAP_ID_MSI)) {
/* Lookup Sucess */
unsigned long flags;
+ pci_read_config_word(dev, msi_control_reg(pos), &control);
+ if (control & PCI_MSI_FLAGS_ENABLE)
+ return 0; /* Already in MSI mode */
spin_lock_irqsave(&msi_lock, flags);
if (!vector_irq[dev->irq]) {
msi_desc[dev->irq]->msi_attrib.state = 0;
entry_nr * PCI_MSIX_ENTRY_SIZE +
PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET);
- if (head == vector) {
- /*
- * Detect last MSI-X vector to be released.
- * Release the MSI-X memory-mapped table.
- */
-#if 0
- int pos, nr_entries;
- unsigned long phys_addr;
- u32 table_offset;
- u16 control;
- u8 bir;
-
- pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
- pci_read_config_word(dev, msi_control_reg(pos),
- &control);
- nr_entries = multi_msix_capable(control);
- pci_read_config_dword(dev, msix_table_offset_reg(pos),
- &table_offset);
- bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
- table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
- phys_addr = pci_resource_start(dev, bir) + table_offset;
-/*
- * FIXME! and what did you want to do with phys_addr?
- */
-#endif
+ if (head == vector)
iounmap(base);
- }
}
return 0;
**/
int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec)
{
+ struct pci_bus *bus;
int status, pos, nr_entries, free_vectors;
int i, j, temp;
u16 control;
if (!pci_msi_enable || !dev || !entries)
return -EINVAL;
+ if (dev->no_msi)
+ return -EINVAL;
+
+ for (bus = dev->bus; bus; bus = bus->parent)
+ if (bus->bus_flags & PCI_BUS_FLAGS_NO_MSI)
+ return -EINVAL;
+
status = msi_init();
if (status < 0)
return status;
}
msi_free_vector(dev, vector, 0);
if (warning) {
- /* Force to release the MSI-X memory-mapped table */
-#if 0
- unsigned long phys_addr;
- u32 table_offset;
- u16 control;
- u8 bir;
-
- pci_read_config_word(dev, msi_control_reg(pos),
- &control);
- pci_read_config_dword(dev, msix_table_offset_reg(pos),
- &table_offset);
- bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
- table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
- phys_addr = pci_resource_start(dev, bir) + table_offset;
-/*
- * FIXME! and what did you want to do with phys_addr?
- */
-#endif
iounmap(base);
printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
"called without free_irq() on all MSI-X vectors\n",