summaryrefslogtreecommitdiff
path: root/drivers/pci/ats.c
diff options
context:
space:
mode:
authorAlex Williamson <alex.williamson@redhat.com>2011-11-11 21:07:36 +0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2011-12-05 22:22:15 +0400
commit91f57d5e1be3db1e079c8696f1eab214f1c7922d (patch)
tree58d4a2a2fa41185c0fe64f8ac7395215fd27d2a1 /drivers/pci/ats.c
parent60fe823837d10673500ff685c01eb2f896fe5849 (diff)
downloadlinux-91f57d5e1be3db1e079c8696f1eab214f1c7922d.tar.xz
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.c69
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;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 05:56:06 +0300