vfio/pci: Config window quirks

Config windows make use of an address register and a data register.
In VGA cards, these are often used to provide real mode code in the
BIOS an easy way to access MMIO registers since the window often
resides in an I/O port register.  When the MMIO register has a mirror
of PCI config space, we need to trap those accesses and redirect them
to emulated config space.

The previous version of this functionality made use of a single
MemoryRegion and single match address.  This version uses separate
MemoryRegions for each of the address and data registers and allows
for multiple match addresses.  This is useful for Nvidia cards which
have two ranges which index into PCI config space.

The previous implementation is left for the follow-on patch for a more
reviewable diff.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/trace-events b/trace-events
index b54411f..5b80ee0 100644
--- a/trace-events
+++ b/trace-events
@@ -1550,10 +1550,8 @@ vfio_generic_window_quirk_write(const char * region_name, const char *name, int
 vfio_generic_quirk_read(const char * region_name, const char *name, int index, uint64_t addr, int size, uint64_t data) "%s read(%s:BAR%d+0x%"PRIx64", %d = 0x%"PRIx64
 # remove )
 vfio_generic_quirk_write(const char * region_name, const char *name, int index, uint64_t addr, uint64_t data, int size) "%s write(%s:BAR%d+0x%"PRIx64", 0x%"PRIx64", %d"
-vfio_probe_ati_bar4_window_quirk(const char *name) "Enabled ATI/AMD BAR4 window quirk for device %s"
 #issue with )
 vfio_probe_ati_bar2_4000_quirk(const char *name) "Enabled ATI/AMD BAR2 0x4000 quirk for device %s"
-vfio_probe_nvidia_bar5_window_quirk(const char *name) "Enabled NVIDIA BAR5 window quirk for device %s"
 vfio_probe_nvidia_bar0_88000_quirk(const char *name) "Enabled NVIDIA BAR0 0x88000 quirk for device %s"
 vfio_probe_nvidia_bar0_1800_quirk_id(int id) "Nvidia NV%02x"
 vfio_probe_nvidia_bar0_1800_quirk(const char *name) "Enabled NVIDIA BAR0 0x1800 quirk for device %s"
@@ -1578,12 +1576,18 @@ vfio_pci_reset_pm(const char *name) "%s PCI PM Reset"
 
 # hw/vfio/pci-quirks.
 vfio_quirk_rom_blacklisted(const char *name, uint16_t vid, uint16_t did) "%s %04x:%04x"
+vfio_quirk_generic_window_address_write(const char *name, const char * region_name, uint64_t data) "%s %s 0x%"PRIx64
+vfio_quirk_generic_window_data_read(const char *name, const char * region_name, uint64_t data) "%s %s 0x%"PRIx64
+vfio_quirk_generic_window_data_write(const char *name, const char * region_name, uint64_t data) "%s %s 0x%"PRIx64
 vfio_quirk_ati_3c3_read(const char *name, uint64_t data) "%s 0x%"PRIx64
 vfio_quirk_ati_3c3_probe(const char *name) "%s"
+vfio_quirk_ati_bar4_probe(const char *name) "%s"
 vfio_quirk_nvidia_3d0_state(const char *name, const char *state) "%s %s"
 vfio_quirk_nvidia_3d0_read(const char *name, uint8_t offset, unsigned size, uint64_t val) " (%s, @0x%x, len=0x%x) %"PRIx64
 vfio_quirk_nvidia_3d0_write(const char *name, uint8_t offset, uint64_t data, unsigned size) "(%s, @0x%x, 0x%"PRIx64", len=0x%x)"
 vfio_quirk_nvidia_3d0_probe(const char *name) "%s"
+vfio_quirk_nvidia_bar5_state(const char *name, const char *state) "%s %s"
+vfio_quirk_nvidia_bar5_probe(const char *name) "%s"
 vfio_quirk_rtl8168_fake_latch(const char *name, uint64_t val) "%s 0x%"PRIx64
 vfio_quirk_rtl8168_msix_write(const char *name, uint16_t offset, uint64_t val) "%s MSI-X table write[0x%x]: 0x%"PRIx64
 vfio_quirk_rtl8168_msix_read(const char *name, uint16_t offset, uint64_t val) "%s MSI-X table read[0x%x]: 0x%"PRIx64