diff options
Diffstat (limited to 'arch/arm/mach-iop13xx/msi.c')
| -rw-r--r-- | arch/arm/mach-iop13xx/msi.c | 52 |
1 files changed, 12 insertions, 40 deletions
diff --git a/arch/arm/mach-iop13xx/msi.c b/arch/arm/mach-iop13xx/msi.c index 560d5b2dec2..e7730cf9c15 100644 --- a/arch/arm/mach-iop13xx/msi.c +++ b/arch/arm/mach-iop13xx/msi.c @@ -23,10 +23,7 @@ #include <linux/msi.h> #include <asm/mach/irq.h> #include <asm/irq.h> - - -#define IOP13XX_NUM_MSI_IRQS 128 -static DECLARE_BITMAP(msi_irq_in_use, IOP13XX_NUM_MSI_IRQS); +#include <mach/irqs.h> /* IMIPR0 CP6 R8 Page 1 */ @@ -121,41 +118,6 @@ void __init iop13xx_msi_init(void) irq_set_chained_handler(IRQ_IOP13XX_INBD_MSI, iop13xx_msi_handler); } -/* - * Dynamic irq allocate and deallocation - */ -int create_irq(void) -{ - int irq, pos; - -again: - pos = find_first_zero_bit(msi_irq_in_use, IOP13XX_NUM_MSI_IRQS); - irq = IRQ_IOP13XX_MSI_0 + pos; - if (irq > NR_IRQS) - return -ENOSPC; - /* test_and_set_bit operates on 32-bits at a time */ - if (test_and_set_bit(pos, msi_irq_in_use)) - goto again; - - dynamic_irq_init(irq); - - return irq; -} - -void destroy_irq(unsigned int irq) -{ - int pos = irq - IRQ_IOP13XX_MSI_0; - - dynamic_irq_cleanup(irq); - - clear_bit(pos, msi_irq_in_use); -} - -void arch_teardown_msi_irq(unsigned int irq) -{ - destroy_irq(irq); -} - static void iop13xx_msi_nop(struct irq_data *d) { return; @@ -172,12 +134,17 @@ static struct irq_chip iop13xx_msi_chip = { int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc) { - int id, irq = create_irq(); + int id, irq = irq_alloc_desc_from(IRQ_IOP13XX_MSI_0, -1); struct msi_msg msg; if (irq < 0) return irq; + if (irq >= NR_IOP13XX_IRQS) { + irq_free_desc(irq); + return -ENOSPC; + } + irq_set_msi_desc(irq, desc); msg.address_hi = 0x0; @@ -191,3 +158,8 @@ int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc) return 0; } + +void arch_teardown_msi_irq(unsigned int irq) +{ + irq_free_desc(irq); +} |