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authorBjorn Helgaas <bhelgaas@google.com>2018-08-15 14:59:11 -0500
committerBjorn Helgaas <bhelgaas@google.com>2018-08-15 14:59:11 -0500
commit0c38011aba35b2cdca263c0ba4d28e2e727b5acb (patch)
treea16ebcc1edc74087fb074368f00f23cb25c99508 /Documentation/PCI
parent37f0e311bca66e9fe74703887c9bb4965914cabf (diff)
parent15c972dfb3954569e7d17ebadf1b10d0a0c3baa3 (diff)
downloadlinux-0c38011aba35b2cdca263c0ba4d28e2e727b5acb.tar.bz2
Merge branch 'remotes/lorenzo/pci/dwc'
- Add Kirin MSI support (Xiaowei Song) - Drop unnecessary root_bus_nr setting from exynos, imx6, keystone, armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn Guo) - Move link notification settings from DesignWare core to individual drivers (Gustavo Pimentel) - Add endpoint library MSI-X interfaces (Gustavo Pimentel) - Correct signature of endpoint library IRQ interfaces (Gustavo Pimentel) - Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel) - Add endpoint library MSI-X test support (Gustavo Pimentel) * remotes/lorenzo/pci/dwc: PCI: endpoint: Add MSI set maximum restriction tools: PCI: Add MSI-X support pci_endpoint_test: Add 2 ioctl commands pci-epf-test/pci_endpoint_test: Add MSI-X support pci-epf-test/pci_endpoint_test: Use irq_type module parameter pci-epf-test/pci_endpoint_test: Cleanup PCI_ENDPOINT_TEST memspace PCI: dwc: Add legacy interrupt callback handler PCI: dwc: Rework MSI callbacks handler PCI: dwc: Add MSI-X callbacks handler PCI: Update xxx_pcie_ep_raise_irq() and pci_epc_raise_irq() signatures PCI: endpoint: Add MSI-X interfaces PCI: dwc: Fix EP link notification implementation PCI: spear13xx: Drop unnecessary root_bus_nr setting PCI: qcom: Drop unnecessary root_bus_nr setting PCI: histb: Drop unnecessary root_bus_nr setting PCI: designware-plat: Drop unnecessary root_bus_nr setting PCI: artpec6: Drop unnecessary root_bus_nr setting PCI: armada8k: Drop unnecessary root_bus_nr setting PCI: keystone: Drop unnecessary root_bus_nr setting PCI: imx6: Drop unnecessary root_bus_nr setting PCI: exynos: Drop unnecessary root_bus_nr setting PCI: kirin: Add MSI support
Diffstat (limited to 'Documentation/PCI')
-rw-r--r--Documentation/PCI/endpoint/function/binding/pci-test.txt2
-rw-r--r--Documentation/PCI/endpoint/pci-endpoint.txt4
-rw-r--r--Documentation/PCI/endpoint/pci-test-function.txt29
-rw-r--r--Documentation/PCI/endpoint/pci-test-howto.txt30
4 files changed, 56 insertions, 9 deletions
diff --git a/Documentation/PCI/endpoint/function/binding/pci-test.txt b/Documentation/PCI/endpoint/function/binding/pci-test.txt
index 3b68b955fb50..cd76ba47394b 100644
--- a/Documentation/PCI/endpoint/function/binding/pci-test.txt
+++ b/Documentation/PCI/endpoint/function/binding/pci-test.txt
@@ -15,3 +15,5 @@ subsys_id : don't care
interrupt_pin : Should be 1 - INTA, 2 - INTB, 3 - INTC, 4 -INTD
msi_interrupts : Should be 1 to 32 depending on the number of MSI interrupts
to test
+msix_interrupts : Should be 1 to 2048 depending on the number of MSI-X
+ interrupts to test
diff --git a/Documentation/PCI/endpoint/pci-endpoint.txt b/Documentation/PCI/endpoint/pci-endpoint.txt
index 9b1d66829290..e86a96b66a6a 100644
--- a/Documentation/PCI/endpoint/pci-endpoint.txt
+++ b/Documentation/PCI/endpoint/pci-endpoint.txt
@@ -44,7 +44,7 @@ by the PCI controller driver.
* clear_bar: ops to reset the BAR
* alloc_addr_space: ops to allocate in PCI controller address space
* free_addr_space: ops to free the allocated address space
- * raise_irq: ops to raise a legacy or MSI interrupt
+ * raise_irq: ops to raise a legacy, MSI or MSI-X interrupt
* start: ops to start the PCI link
* stop: ops to stop the PCI link
@@ -96,7 +96,7 @@ by the PCI endpoint function driver.
*) pci_epc_raise_irq()
The PCI endpoint function driver should use pci_epc_raise_irq() to raise
- Legacy Interrupt or MSI Interrupt.
+ Legacy Interrupt, MSI or MSI-X Interrupt.
*) pci_epc_mem_alloc_addr()
diff --git a/Documentation/PCI/endpoint/pci-test-function.txt b/Documentation/PCI/endpoint/pci-test-function.txt
index 0c519c9bf94a..5916f1f592bb 100644
--- a/Documentation/PCI/endpoint/pci-test-function.txt
+++ b/Documentation/PCI/endpoint/pci-test-function.txt
@@ -20,6 +20,8 @@ The PCI endpoint test device has the following registers:
5) PCI_ENDPOINT_TEST_DST_ADDR
6) PCI_ENDPOINT_TEST_SIZE
7) PCI_ENDPOINT_TEST_CHECKSUM
+ 8) PCI_ENDPOINT_TEST_IRQ_TYPE
+ 9) PCI_ENDPOINT_TEST_IRQ_NUMBER
*) PCI_ENDPOINT_TEST_MAGIC
@@ -34,10 +36,10 @@ that the endpoint device must perform.
Bitfield Description:
Bit 0 : raise legacy IRQ
Bit 1 : raise MSI IRQ
- Bit 2 - 7 : MSI interrupt number
- Bit 8 : read command (read data from RC buffer)
- Bit 9 : write command (write data to RC buffer)
- Bit 10 : copy command (copy data from one RC buffer to another
+ Bit 2 : raise MSI-X IRQ
+ Bit 3 : read command (read data from RC buffer)
+ Bit 4 : write command (write data to RC buffer)
+ Bit 5 : copy command (copy data from one RC buffer to another
RC buffer)
*) PCI_ENDPOINT_TEST_STATUS
@@ -64,3 +66,22 @@ COPY/READ command.
This register contains the destination address (RC buffer address) for
the COPY/WRITE command.
+
+*) PCI_ENDPOINT_TEST_IRQ_TYPE
+
+This register contains the interrupt type (Legacy/MSI) triggered
+for the READ/WRITE/COPY and raise IRQ (Legacy/MSI) commands.
+
+Possible types:
+ - Legacy : 0
+ - MSI : 1
+ - MSI-X : 2
+
+*) PCI_ENDPOINT_TEST_IRQ_NUMBER
+
+This register contains the triggered ID interrupt.
+
+Admissible values:
+ - Legacy : 0
+ - MSI : [1 .. 32]
+ - MSI-X : [1 .. 2048]
diff --git a/Documentation/PCI/endpoint/pci-test-howto.txt b/Documentation/PCI/endpoint/pci-test-howto.txt
index 75f48c3bb191..e40cf0fb58d7 100644
--- a/Documentation/PCI/endpoint/pci-test-howto.txt
+++ b/Documentation/PCI/endpoint/pci-test-howto.txt
@@ -45,9 +45,9 @@ The PCI endpoint framework populates the directory with the following
configurable fields.
# ls functions/pci_epf_test/func1
- baseclass_code interrupt_pin revid subsys_vendor_id
- cache_line_size msi_interrupts subclass_code vendorid
- deviceid progif_code subsys_id
+ baseclass_code interrupt_pin progif_code subsys_id
+ cache_line_size msi_interrupts revid subsys_vendorid
+ deviceid msix_interrupts subclass_code vendorid
The PCI endpoint function driver populates these entries with default values
when the device is bound to the driver. The pci-epf-test driver populates
@@ -67,6 +67,7 @@ device, the following commands can be used.
# echo 0x104c > functions/pci_epf_test/func1/vendorid
# echo 0xb500 > functions/pci_epf_test/func1/deviceid
# echo 16 > functions/pci_epf_test/func1/msi_interrupts
+ # echo 8 > functions/pci_epf_test/func1/msix_interrupts
1.5 Binding pci-epf-test Device to EP Controller
@@ -120,7 +121,9 @@ following commands.
Interrupt tests
+ SET IRQ TYPE TO LEGACY: OKAY
LEGACY IRQ: NOT OKAY
+ SET IRQ TYPE TO MSI: OKAY
MSI1: OKAY
MSI2: OKAY
MSI3: OKAY
@@ -153,9 +156,30 @@ following commands.
MSI30: NOT OKAY
MSI31: NOT OKAY
MSI32: NOT OKAY
+ SET IRQ TYPE TO MSI-X: OKAY
+ MSI-X1: OKAY
+ MSI-X2: OKAY
+ MSI-X3: OKAY
+ MSI-X4: OKAY
+ MSI-X5: OKAY
+ MSI-X6: OKAY
+ MSI-X7: OKAY
+ MSI-X8: OKAY
+ MSI-X9: NOT OKAY
+ MSI-X10: NOT OKAY
+ MSI-X11: NOT OKAY
+ MSI-X12: NOT OKAY
+ MSI-X13: NOT OKAY
+ MSI-X14: NOT OKAY
+ MSI-X15: NOT OKAY
+ MSI-X16: NOT OKAY
+ [...]
+ MSI-X2047: NOT OKAY
+ MSI-X2048: NOT OKAY
Read Tests
+ SET IRQ TYPE TO MSI: OKAY
READ ( 1 bytes): OKAY
READ ( 1024 bytes): OKAY
READ ( 1025 bytes): OKAY