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| author |   Alex Williamson <alex.williamson@redhat.com> | 2011-11-11 10:07:36 -0700 |
|---|---|---|
| committer |   Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-12-05 10:22:15 -0800 |
| commit | 91f57d5e1be3db1e079c8696f1eab214f1c7922d (patch) | |
| tree | 58d4a2a2fa41185c0fe64f8ac7395215fd27d2a1 /drivers/pci/ats.c | |
| parent | PCI: Enable is not exposed as a PASID capability (diff) | |
| download | linux-dev-91f57d5e1be3db1e079c8696f1eab214f1c7922d.tar.xz linux-dev-91f57d5e1be3db1e079c8696f1eab214f1c7922d.zip | |
PCI: More PRI/PASID cleanup
More consistency cleanups. Drop the _OFF, separate and indent
CTRL/CAP/STATUS bit definitions. This helped find the previous
mis-use of bit 0 in the PASID capability register.
Reviewed-by: Joerg Roedel <joerg.roedel@amd.com>
Tested-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/ats.c')
| -rw-r--r-- | drivers/pci/ats.c | 69 |
1 files changed, 35 insertions, 34 deletions
diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c index 8e95a123d37a..2df49af6cc90 100644 --- a/drivers/pci/ats.c +++ b/drivers/pci/ats.c @@ -178,17 +178,18 @@ int pci_enable_pri(struct pci_dev *pdev, u32 reqs) if (!pos) return -EINVAL; - pci_read_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, &control); - pci_read_config_word(pdev, pos + PCI_PRI_STATUS_OFF, &status); - if ((control & PCI_PRI_ENABLE) || !(status & PCI_PRI_STATUS_STOPPED)) + pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); + pci_read_config_word(pdev, pos + PCI_PRI_STATUS, &status); + if ((control & PCI_PRI_CTRL_ENABLE) || + !(status & PCI_PRI_STATUS_STOPPED)) return -EBUSY; - pci_read_config_dword(pdev, pos + PCI_PRI_MAX_REQ_OFF, &max_requests); + pci_read_config_dword(pdev, pos + PCI_PRI_MAX_REQ, &max_requests); reqs = min(max_requests, reqs); - pci_write_config_dword(pdev, pos + PCI_PRI_ALLOC_REQ_OFF, reqs); + pci_write_config_dword(pdev, pos + PCI_PRI_ALLOC_REQ, reqs); - control |= PCI_PRI_ENABLE; - pci_write_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, control); + control |= PCI_PRI_CTRL_ENABLE; + pci_write_config_word(pdev, pos + PCI_PRI_CTRL, control); return 0; } @@ -209,9 +210,9 @@ void pci_disable_pri(struct pci_dev *pdev) if (!pos) return; - pci_read_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, &control); - control &= ~PCI_PRI_ENABLE; - pci_write_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, control); + pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); + control &= ~PCI_PRI_CTRL_ENABLE; + pci_write_config_word(pdev, pos + PCI_PRI_CTRL, control); } EXPORT_SYMBOL_GPL(pci_disable_pri); @@ -230,9 +231,9 @@ bool pci_pri_enabled(struct pci_dev *pdev) if (!pos) return false; - pci_read_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, &control); + pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); - return (control & PCI_PRI_ENABLE) ? true : false; + return (control & PCI_PRI_CTRL_ENABLE) ? true : false; } EXPORT_SYMBOL_GPL(pci_pri_enabled); @@ -252,13 +253,13 @@ int pci_reset_pri(struct pci_dev *pdev) if (!pos) return -EINVAL; - pci_read_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, &control); - if (control & PCI_PRI_ENABLE) + pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); + if (control & PCI_PRI_CTRL_ENABLE) return -EBUSY; - control |= PCI_PRI_RESET; + control |= PCI_PRI_CTRL_RESET; - pci_write_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, control); + pci_write_config_word(pdev, pos + PCI_PRI_CTRL, control); return 0; } @@ -285,10 +286,10 @@ bool pci_pri_stopped(struct pci_dev *pdev) if (!pos) return true; - pci_read_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, &control); - pci_read_config_word(pdev, pos + PCI_PRI_STATUS_OFF, &status); + pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); + pci_read_config_word(pdev, pos + PCI_PRI_STATUS, &status); - if (control & PCI_PRI_ENABLE) + if (control & PCI_PRI_CTRL_ENABLE) return false; return (status & PCI_PRI_STATUS_STOPPED) ? true : false; @@ -314,11 +315,11 @@ int pci_pri_status(struct pci_dev *pdev) if (!pos) return -EINVAL; - pci_read_config_word(pdev, pos + PCI_PRI_CONTROL_OFF, &control); - pci_read_config_word(pdev, pos + PCI_PRI_STATUS_OFF, &status); + pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); + pci_read_config_word(pdev, pos + PCI_PRI_STATUS, &status); /* Stopped bit is undefined when enable == 1, so clear it */ - if (control & PCI_PRI_ENABLE) + if (control & PCI_PRI_CTRL_ENABLE) status &= ~PCI_PRI_STATUS_STOPPED; return status; @@ -345,21 +346,21 @@ int pci_enable_pasid(struct pci_dev *pdev, int features) if (!pos) return -EINVAL; - pci_read_config_word(pdev, pos + PCI_PASID_CONTROL_OFF, &control); - pci_read_config_word(pdev, pos + PCI_PASID_CAP_OFF, &supported); + pci_read_config_word(pdev, pos + PCI_PASID_CTRL, &control); + pci_read_config_word(pdev, pos + PCI_PASID_CAP, &supported); - if (control & PCI_PASID_ENABLE) + if (control & PCI_PASID_CTRL_ENABLE) return -EINVAL; - supported &= PCI_PASID_EXEC | PCI_PASID_PRIV; + supported &= PCI_PASID_CAP_EXEC | PCI_PASID_CAP_PRIV; /* User wants to enable anything unsupported? */ if ((supported & features) != features) return -EINVAL; - control = PCI_PASID_ENABLE | features; + control = PCI_PASID_CTRL_ENABLE | features; - pci_write_config_word(pdev, pos + PCI_PASID_CONTROL_OFF, control); + pci_write_config_word(pdev, pos + PCI_PASID_CTRL, control); return 0; } @@ -379,7 +380,7 @@ void pci_disable_pasid(struct pci_dev *pdev) if (!pos) return; - pci_write_config_word(pdev, pos + PCI_PASID_CONTROL_OFF, control); + pci_write_config_word(pdev, pos + PCI_PASID_CTRL, control); } EXPORT_SYMBOL_GPL(pci_disable_pasid); @@ -390,8 +391,8 @@ EXPORT_SYMBOL_GPL(pci_disable_pasid); * Returns a negative value when no PASI capability is present. * Otherwise is returns a bitmask with supported features. Current * features reported are: - * PCI_PASID_EXEC - Execute permission supported - * PCI_PASID_PRIV - Priviledged mode supported + * PCI_PASID_CAP_EXEC - Execute permission supported + * PCI_PASID_CAP_PRIV - Priviledged mode supported */ int pci_pasid_features(struct pci_dev *pdev) { @@ -402,9 +403,9 @@ int pci_pasid_features(struct pci_dev *pdev) if (!pos) return -EINVAL; - pci_read_config_word(pdev, pos + PCI_PASID_CAP_OFF, &supported); + pci_read_config_word(pdev, pos + PCI_PASID_CAP, &supported); - supported &= PCI_PASID_EXEC | PCI_PASID_PRIV; + supported &= PCI_PASID_CAP_EXEC | PCI_PASID_CAP_PRIV; return supported; } @@ -428,7 +429,7 @@ int pci_max_pasids(struct pci_dev *pdev) if (!pos) return -EINVAL; - pci_read_config_word(pdev, pos + PCI_PASID_CAP_OFF, &supported); + pci_read_config_word(pdev, pos + PCI_PASID_CAP, &supported); supported = (supported & PASID_NUMBER_MASK) >> PASID_NUMBER_SHIFT; |