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| author |   Michael Ellerman <michael@ellerman.id.au> | 2007-09-20 16:36:51 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-10-03 09:11:42 +1000 |
| commit | 21ccdd31e9c70f42b00d9ea152f6c4e0ff3f536e (patch) | |
| tree | c54c610501be73cf2634e951e9d75c4e20820370 /arch/powerpc/sysdev | |
| parent | [POWERPC] Simplify rtas_change_msi() error semantics (diff) | |
| download | linux-dev-21ccdd31e9c70f42b00d9ea152f6c4e0ff3f536e.tar.xz linux-dev-21ccdd31e9c70f42b00d9ea152f6c4e0ff3f536e.zip | |
[POWERPC] Inline u3msi_compose_msi_msg()
In the MPIC U3 MSI code, we call u3msi_compose_msi_msg() once for each MSI.
This is overkill, as the address is per pci device, not per MSI. So setup
the address once, and just set the data per MSI.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/mpic_u3msi.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/arch/powerpc/sysdev/mpic_u3msi.c b/arch/powerpc/sysdev/mpic_u3msi.c index 255b2f53beda..1d5a40899b74 100644 --- a/arch/powerpc/sysdev/mpic_u3msi.c +++ b/arch/powerpc/sysdev/mpic_u3msi.c @@ -108,26 +108,17 @@ static void u3msi_teardown_msi_irqs(struct pci_dev *pdev) return; } -static void u3msi_compose_msi_msg(struct pci_dev *pdev, int virq, - struct msi_msg *msg) -{ - u64 addr; - - addr = find_ht_magic_addr(pdev); - msg->address_lo = addr & 0xFFFFFFFF; - msg->address_hi = addr >> 32; - msg->data = virq_to_hw(virq); - - pr_debug("u3msi: allocated virq 0x%x (hw 0x%lx) at address 0x%lx\n", - virq, virq_to_hw(virq), addr); -} - static int u3msi_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; + u64 addr; + + addr = find_ht_magic_addr(pdev); + msg.address_lo = addr & 0xFFFFFFFF; + msg.address_hi = addr >> 32; list_for_each_entry(entry, &pdev->msi_list, list) { hwirq = mpic_msi_alloc_hwirqs(msi_mpic, 1); @@ -147,7 +138,10 @@ static int u3msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) set_irq_chip(virq, &mpic_u3msi_chip); set_irq_type(virq, IRQ_TYPE_EDGE_RISING); - u3msi_compose_msi_msg(pdev, virq, &msg); + pr_debug("u3msi: allocated virq 0x%x (hw 0x%lx) addr 0x%lx\n", + virq, hwirq, addr); + + msg.data = hwirq; write_msi_msg(virq, &msg); hwirq++; |