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authorMichael Ellerman <michael@ellerman.id.au>2008-08-06 09:10:03 +1000
committerPaul Mackerras <paulus@samba.org>2008-08-20 16:34:58 +1000
commit25235f712b680d00756a73ee64289137989fc6fd (patch)
tree3237a42b97fd5f7136ad7a7be9ef3540697cb5f4 /arch/powerpc/sysdev/mpic_pasemi_msi.c
parent7e7ab3677502a0f798f38bfa1a7d53dd22faa0bc (diff)
powerpc: Convert the MPIC MSI code to use msi_bitmap
This affects the U3 MSI code as well as the PASEMI MSI code. We keep some of the MPIC routines as helpers, and also the U3 best-guess reservation logic. The rest is replaced by the generic code. And a few printk format changes due to hwirq type change. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/sysdev/mpic_pasemi_msi.c')
-rw-r--r--arch/powerpc/sysdev/mpic_pasemi_msi.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/arch/powerpc/sysdev/mpic_pasemi_msi.c b/arch/powerpc/sysdev/mpic_pasemi_msi.c
index 68aff607667..656cb772b69 100644
--- a/arch/powerpc/sysdev/mpic_pasemi_msi.c
+++ b/arch/powerpc/sysdev/mpic_pasemi_msi.c
@@ -22,6 +22,7 @@
#include <asm/prom.h>
#include <asm/hw_irq.h>
#include <asm/ppc-pci.h>
+#include <asm/msi_bitmap.h>
#include "mpic.h"
@@ -81,8 +82,8 @@ static void pasemi_msi_teardown_msi_irqs(struct pci_dev *pdev)
continue;
set_irq_msi(entry->irq, NULL);
- mpic_msi_free_hwirqs(msi_mpic, virq_to_hw(entry->irq),
- ALLOC_CHUNK);
+ msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
+ virq_to_hw(entry->irq), ALLOC_CHUNK);
irq_dispose_mapping(entry->irq);
}
@@ -91,11 +92,10 @@ static void pasemi_msi_teardown_msi_irqs(struct pci_dev *pdev)
static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
{
- irq_hw_number_t hwirq;
unsigned int virq;
struct msi_desc *entry;
struct msi_msg msg;
- int ret;
+ int hwirq;
pr_debug("pasemi_msi_setup_msi_irqs, pdev %p nvec %d type %d\n",
pdev, nvec, type);
@@ -109,17 +109,19 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
* few MSIs for someone, but restrictions will apply to how the
* sources can be changed independently.
*/
- ret = mpic_msi_alloc_hwirqs(msi_mpic, ALLOC_CHUNK);
- hwirq = ret;
- if (ret < 0) {
+ hwirq = msi_bitmap_alloc_hwirqs(&msi_mpic->msi_bitmap,
+ ALLOC_CHUNK);
+ if (hwirq < 0) {
pr_debug("pasemi_msi: failed allocating hwirq\n");
return hwirq;
}
virq = irq_create_mapping(msi_mpic->irqhost, hwirq);
if (virq == NO_IRQ) {
- pr_debug("pasemi_msi: failed mapping hwirq 0x%lx\n", hwirq);
- mpic_msi_free_hwirqs(msi_mpic, hwirq, ALLOC_CHUNK);
+ pr_debug("pasemi_msi: failed mapping hwirq 0x%x\n",
+ hwirq);
+ msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap, hwirq,
+ ALLOC_CHUNK);
return -ENOSPC;
}
@@ -133,8 +135,8 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
set_irq_chip(virq, &mpic_pasemi_msi_chip);
set_irq_type(virq, IRQ_TYPE_EDGE_RISING);
- pr_debug("pasemi_msi: allocated virq 0x%x (hw 0x%lx) addr 0x%x\n",
- virq, hwirq, msg.address_lo);
+ pr_debug("pasemi_msi: allocated virq 0x%x (hw 0x%x) " \
+ "addr 0x%x\n", virq, hwirq, msg.address_lo);
/* Likewise, the device writes [0...511] into the target
* register to generate MSI [512...1023]