diff options
| author |   Michael Ellerman <michael@ellerman.id.au> | 2009-01-22 20:54:31 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-11 13:38:01 +1100 |
| commit | 3a51c0cbea947dc9194e18f11661eaa4dbfc5c13 (patch) | |
| tree | 205b2b8694ec79d915deb185f36ad57b8399b184 | |
| parent | powerpc/pseries: Fix MSI-X interrupt querying (diff) | |
| download | linux-dev-3a51c0cbea947dc9194e18f11661eaa4dbfc5c13.tar.xz linux-dev-3a51c0cbea947dc9194e18f11661eaa4dbfc5c13.zip | |
powerpc/pseries: Add support for ibm,req#msi-x
Firmware encodes the number of MSI-X requested by a device in a
different property than for MSI. Pull the property name out as a
parameter and share the logic for both cases.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/platforms/pseries/msi.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c index 4af7aa3e2e0f..acf1070d65c0 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -132,7 +132,7 @@ static void rtas_teardown_msi_irqs(struct pci_dev *pdev) rtas_disable_msi(pdev); } -static int check_req_msi(struct pci_dev *pdev, int nvec) +static int check_req(struct pci_dev *pdev, int nvec, char *prop_name) { struct device_node *dn; struct pci_dn *pdn; @@ -144,24 +144,34 @@ static int check_req_msi(struct pci_dev *pdev, int nvec) dn = pdn->node; - req_msi = of_get_property(dn, "ibm,req#msi", NULL); + req_msi = of_get_property(dn, prop_name, NULL); if (!req_msi) { - pr_debug("rtas_msi: No ibm,req#msi on %s\n", dn->full_name); + pr_debug("rtas_msi: No %s on %s\n", prop_name, dn->full_name); return -ENOENT; } if (*req_msi < nvec) { - pr_debug("rtas_msi: ibm,req#msi requests < %d MSIs\n", nvec); + pr_debug("rtas_msi: %s requests < %d MSIs\n", prop_name, nvec); return -ENOSPC; } return 0; } +static int check_req_msi(struct pci_dev *pdev, int nvec) +{ + return check_req(pdev, nvec, "ibm,req#msi"); +} + +static int check_req_msix(struct pci_dev *pdev, int nvec) +{ + return check_req(pdev, nvec, "ibm,req#msi-x"); +} + static int rtas_msi_check_device(struct pci_dev *pdev, int nvec, int type) { if (type == PCI_CAP_ID_MSIX) - pr_debug("rtas_msi: MSI-X untested, trying anyway.\n"); + return check_req_msix(pdev, nvec); return check_req_msi(pdev, nvec); } |