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authorDavid Daney <ddaney@caviumnetworks.com>2010-07-23 10:43:45 -0700
committerRalf Baechle <ralf@linux-mips.org>2010-08-05 13:26:10 +0100
commita894f14d7ebe9e278b496b1e653ae57f2eff514e (patch)
treeadf5e2caef5ec79c7256d50d6a7f3fdff94e8d15 /arch/mips/cavium-octeon
parentcb8f55b9207df96ccc332748eb3d154cd2e8014f (diff)
MIPS: Octeon: Move MSI code out of octeon-irq.c.
Put all the MSI code in one place (msi-octeon.c). This simplifies octeon-irq.c and gets rid of some ugly #ifdefs Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1484/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/cavium-octeon')
-rw-r--r--arch/mips/cavium-octeon/octeon-irq.c93
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 c424cd158dc..f4b901aaf50 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);
}