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authorChristoph Hellwig <hch@lst.de>2022-03-30 07:24:21 +0200
committerChristoph Hellwig <hch@lst.de>2022-03-30 16:54:24 +0200
commit05b0ebd06ae6b9e72b747362e52abb400a175080 (patch)
treea5c10ca1c07f977701fc16d4bd3584dcccb440c4 /Documentation
parent7968778914e53788a01c2dee2692cab157de9ac0 (diff)
downloadlinux-05b0ebd06ae6b9e72b747362e52abb400a175080.tar.gz
PCI/doc: cleanup references to the legacy PCI DMA API
Mention the regular DMA API calls instead of the now removed PCI DMA API.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/PCI/pci.rst14
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/PCI/pci.rst b/Documentation/PCI/pci.rst
index 87c6f4a6ca32..67a850b55617 100644
--- a/Documentation/PCI/pci.rst
+++ b/Documentation/PCI/pci.rst
@@ -278,20 +278,20 @@ appropriate parameters.  In general this allows more efficient DMA
 on systems where System RAM exists above 4G _physical_ address.
 
 Drivers for all PCI-X and PCIe compliant devices must call
-pci_set_dma_mask() as they are 64-bit DMA devices.
+set_dma_mask() as they are 64-bit DMA devices.
 
 Similarly, drivers must also "register" this capability if the device
-can directly address "consistent memory" in System RAM above 4G physical
-address by calling pci_set_consistent_dma_mask().
+can directly address "coherent memory" in System RAM above 4G physical
+address by calling dma_set_coherent_mask().
 Again, this includes drivers for all PCI-X and PCIe compliant devices.
 Many 64-bit "PCI" devices (before PCI-X) and some PCI-X devices are
 64-bit DMA capable for payload ("streaming") data but not control
-("consistent") data.
+("coherent") data.
 
 
 Setup shared control data
 -------------------------
-Once the DMA masks are set, the driver can allocate "consistent" (a.k.a. shared)
+Once the DMA masks are set, the driver can allocate "coherent" (a.k.a. shared)
 memory.  See Documentation/core-api/dma-api.rst for a full description of
 the DMA APIs. This section is just a reminder that it needs to be done
 before enabling DMA on the device.
@@ -367,7 +367,7 @@ steps need to be performed:
   - Disable the device from generating IRQs
   - Release the IRQ (free_irq())
   - Stop all DMA activity
-  - Release DMA buffers (both streaming and consistent)
+  - Release DMA buffers (both streaming and coherent)
   - Unregister from other subsystems (e.g. scsi or netdev)
   - Disable device from responding to MMIO/IO Port addresses
   - Release MMIO/IO Port resource(s)
@@ -420,7 +420,7 @@ Once DMA is stopped, clean up streaming DMA first.
 I.e. unmap data buffers and return buffers to "upstream"
 owners if there is one.
 
-Then clean up "consistent" buffers which contain the control data.
+Then clean up "coherent" buffers which contain the control data.
 
 See Documentation/core-api/dma-api.rst for details on unmapping interfaces.