diff options
Diffstat (limited to 'qemu/docs/specs/pci-testdev.txt')
-rw-r--r-- | qemu/docs/specs/pci-testdev.txt | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/qemu/docs/specs/pci-testdev.txt b/qemu/docs/specs/pci-testdev.txt deleted file mode 100644 index 128ae222e..000000000 --- a/qemu/docs/specs/pci-testdev.txt +++ /dev/null @@ -1,26 +0,0 @@ -pci-test is a device used for testing low level IO - -device implements up to two BARs: BAR0 and BAR1. -Each BAR can be memory or IO. Guests must detect -BAR type and act accordingly. - -Each BAR size is up to 4K bytes. -Each BAR starts with the following header: - -typedef struct PCITestDevHdr { - uint8_t test; <- write-only, starts a given test number - uint8_t width_type; <- read-only, type and width of access for a given test. - 1,2,4 for byte,word or long write. - any other value if test not supported on this BAR - uint8_t pad0[2]; - uint32_t offset; <- read-only, offset in this BAR for a given test - uint32_t data; <- read-only, data to use for a given test - uint32_t count; <- for debugging. number of writes detected. - uint8_t name[]; <- for debugging. 0-terminated ASCII string. -} PCITestDevHdr; - -All registers are little endian. - -device is expected to always implement tests 0 to N on each BAR, and to add new -tests with higher numbers. In this way a guest can scan test numbers until it -detects an access type that it does not support on this BAR, then stop. |