diff options
Diffstat (limited to 'arch/mips/cavium-octeon')
| -rw-r--r-- | arch/mips/cavium-octeon/octeon-irq.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c index c424cd1..f4b901a 100644 --- a/arch/mips/cavium-octeon/octeon-irq.c +++ b/arch/mips/cavium-octeon/octeon-irq.c @@ -10,8 +10,6 @@ #include <linux/smp.h> #include <asm/octeon/octeon.h> -#include <asm/octeon/cvmx-pexp-defs.h> -#include <asm/octeon/cvmx-npi-defs.h> static DEFINE_RAW_SPINLOCK(octeon_irq_ciu0_lock); static DEFINE_RAW_SPINLOCK(octeon_irq_ciu1_lock); @@ -528,90 +526,6 @@ static struct irq_chip octeon_irq_chip_ciu1 = { #endif }; -#ifdef CONFIG_PCI_MSI - -static DEFINE_RAW_SPINLOCK(octeon_irq_msi_lock); - -static void octeon_irq_msi_ack(unsigned int irq) -{ - if (!octeon_has_feature(OCTEON_FEATURE_PCIE)) { - /* These chips have PCI */ - cvmx_write_csr(CVMX_NPI_NPI_MSI_RCV, - 1ull << (irq - OCTEON_IRQ_MSI_BIT0)); - } else { - /* - * These chips have PCIe. Thankfully the ACK doesn't - * need any locking. - */ - cvmx_write_csr(CVMX_PEXP_NPEI_MSI_RCV0, - 1ull << (irq - OCTEON_IRQ_MSI_BIT0)); - } -} - -static void octeon_irq_msi_eoi(unsigned int irq) -{ - /* Nothing needed */ -} - -static void octeon_irq_msi_enable(unsigned int irq) -{ - if (!octeon_has_feature(OCTEON_FEATURE_PCIE)) { - /* - * Octeon PCI doesn't have the ability to mask/unmask - * MSI interrupts individually. Instead of - * masking/unmasking them in groups of 16, we simple - * assume MSI devices are well behaved. MSI - * interrupts are always enable and the ACK is assumed - * to be enough. - */ - } else { - /* These chips have PCIe. Note that we only support - * the first 64 MSI interrupts. Unfortunately all the - * MSI enables are in the same register. We use - * MSI0's lock to control access to them all. - */ - uint64_t en; - unsigned long flags; - raw_spin_lock_irqsave(&octeon_irq_msi_lock, flags); - en = cvmx_read_csr(CVMX_PEXP_NPEI_MSI_ENB0); - en |= 1ull << (irq - OCTEON_IRQ_MSI_BIT0); - cvmx_write_csr(CVMX_PEXP_NPEI_MSI_ENB0, en); - cvmx_read_csr(CVMX_PEXP_NPEI_MSI_ENB0); - raw_spin_unlock_irqrestore(&octeon_irq_msi_lock, flags); - } -} - -static void octeon_irq_msi_disable(unsigned int irq) -{ - if (!octeon_has_feature(OCTEON_FEATURE_PCIE)) { - /* See comment in enable */ - } else { - /* - * These chips have PCIe. Note that we only support - * the first 64 MSI interrupts. Unfortunately all the - * MSI enables are in the same register. We use - * MSI0's lock to control access to them all. - */ - uint64_t en; - unsigned long flags; - raw_spin_lock_irqsave(&octeon_irq_msi_lock, flags); - en = cvmx_read_csr(CVMX_PEXP_NPEI_MSI_ENB0); - en &= ~(1ull << (irq - OCTEON_IRQ_MSI_BIT0)); - cvmx_write_csr(CVMX_PEXP_NPEI_MSI_ENB0, en); - cvmx_read_csr(CVMX_PEXP_NPEI_MSI_ENB0); - raw_spin_unlock_irqrestore(&octeon_irq_msi_lock, flags); - } -} - -static struct irq_chip octeon_irq_chip_msi = { - .name = "MSI", - .enable = octeon_irq_msi_enable, - .disable = octeon_irq_msi_disable, - .ack = octeon_irq_msi_ack, - .eoi = octeon_irq_msi_eoi, -}; -#endif - void __init arch_init_irq(void) { int irq; @@ -672,13 +586,6 @@ void __init arch_init_irq(void) set_irq_chip_and_handler(irq, chip1, handle_percpu_irq); } -#ifdef CONFIG_PCI_MSI - /* 152 - 215 PCI/PCIe MSI interrupts */ - for (irq = OCTEON_IRQ_MSI_BIT0; irq <= OCTEON_IRQ_MSI_BIT63; irq++) { - set_irq_chip_and_handler(irq, &octeon_irq_chip_msi, - handle_percpu_irq); - } -#endif set_c0_status(0x300 << 2); } |
