diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-15 09:41:27 +0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-15 09:41:27 +0400 |
commit | c362495586e8a3a6487a318fcd82eaf15ffe2142 (patch) | |
tree | 86f7b195d36ba198f24f86be327f21a8d24ec248 /arch/powerpc/platforms/pseries/msi.c | |
parent | b70936d9ffbf0f45f4fa13a03122f015f13ecdb0 (diff) | |
parent | ddffeb8c4d0331609ef2581d84de4d763607bd37 (diff) | |
download | linux-c362495586e8a3a6487a318fcd82eaf15ffe2142.tar.xz |
Merge 3.7-rc1 into tty-linus
This syncs up the tty-linus branch to the latest in Linus's tree to get all of
the UAPI stuff needed for the next set of patches to merge.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/msi.c')
-rw-r--r-- | arch/powerpc/platforms/pseries/msi.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c index 109fdb75578d..d19f4977c834 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -210,6 +210,7 @@ static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total) static struct device_node *find_pe_dn(struct pci_dev *dev, int *total) { struct device_node *dn; + struct eeh_dev *edev; /* Found our PE and assume 8 at that point. */ @@ -217,7 +218,10 @@ static struct device_node *find_pe_dn(struct pci_dev *dev, int *total) if (!dn) return NULL; - dn = eeh_find_device_pe(dn); + /* Get the top level device in the PE */ + edev = of_node_to_eeh_dev(dn); + edev = list_first_entry(&edev->pe->edevs, struct eeh_dev, list); + dn = eeh_dev_to_of_node(edev); if (!dn) return NULL; @@ -387,12 +391,13 @@ static int check_msix_entries(struct pci_dev *pdev) return 0; } -static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) +static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int type) { struct pci_dn *pdn; int hwirq, virq, i, rc; struct msi_desc *entry; struct msi_msg msg; + int nvec = nvec_in; pdn = get_pdn(pdev); if (!pdn) @@ -402,10 +407,23 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) return -EINVAL; /* + * Firmware currently refuse any non power of two allocation + * so we round up if the quota will allow it. + */ + if (type == PCI_CAP_ID_MSIX) { + int m = roundup_pow_of_two(nvec); + int quota = msi_quota_for_device(pdev, m); + + if (quota >= m) + nvec = m; + } + + /* * Try the new more explicit firmware interface, if that fails fall * back to the old interface. The old interface is known to never * return MSI-Xs. */ +again: if (type == PCI_CAP_ID_MSI) { rc = rtas_change_msi(pdn, RTAS_CHANGE_MSI_FN, nvec); @@ -417,6 +435,10 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) rc = rtas_change_msi(pdn, RTAS_CHANGE_MSIX_FN, nvec); if (rc != nvec) { + if (nvec != nvec_in) { + nvec = nvec_in; + goto again; + } pr_debug("rtas_msi: rtas_change_msi() failed\n"); return rc; } |