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vfio/pci: Rework RTL8168 quirk 

Another rework of this quirk, this time to update to the new quirk
structure.  We can handle the address and data registers with
separate MemoryRegions and a quirk specific data structure, making the
code much more understandable.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson 2015-09-23 13:04:47 -06:00
parent 6029a424be
commit 954258a5f1
2 changed files with 102 additions and 77 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

149
hw/vfio/pci-quirks.c
View File

@ -784,56 +784,46 @@ static void vfio_probe_nvidia_bar0_1800_quirk(VFIOPCIDevice *vdev, int nr)
* vfio: vfio_bar_write(0000:05:00.0:BAR2+0x74, 0x8001f000, 4) // do write * vfio: vfio_bar_write(0000:05:00.0:BAR2+0x74, 0x8001f000, 4) // do write
* vfio: vfio_bar_read(0000:05:00.0:BAR2+0x74, 4) = 0x1f000 // complete * vfio: vfio_bar_read(0000:05:00.0:BAR2+0x74, 4) = 0x1f000 // complete
*/ */
static uint64_t vfio_rtl8168_window_quirk_read(void *opaque, typedef struct VFIOrtl8168Quirk {
VFIOPCIDevice *vdev;
uint32_t addr;
uint32_t data;
bool enabled;
} VFIOrtl8168Quirk;
static uint64_t vfio_rtl8168_quirk_address_read(void *opaque,
hwaddr addr, unsigned size) hwaddr addr, unsigned size)
{ {
VFIOLegacyQuirk *quirk = opaque; VFIOrtl8168Quirk *rtl = opaque;
VFIOPCIDevice *vdev = quirk->vdev; VFIOPCIDevice *vdev = rtl->vdev;
uint64_t val = 0; uint64_t data = vfio_region_read(&vdev->bars[2].region, addr + 0x74, size);
if (!quirk->data.flags) { /* Non-MSI-X table access */ if (rtl->enabled) {
return vfio_region_read(&vdev->bars[quirk->data.bar].region, data = rtl->addr ^ 0x80000000U; /* latch/complete */
addr + 0x70, size); trace_vfio_quirk_rtl8168_fake_latch(vdev->vbasedev.name, data);
} }
switch (addr) { return data;
case 4: /* address */
val = quirk->data.address_match ^ 0x80000000U; /* latch/complete */
break;
case 0: /* data */
if ((vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX)) {
memory_region_dispatch_read(&vdev->pdev.msix_table_mmio,
(hwaddr)(quirk->data.address_match & 0xfff),
&val, size, MEMTXATTRS_UNSPECIFIED);
}
break;
}
trace_vfio_rtl8168_quirk_read(vdev->vbasedev.name,
addr ? "address" : "data", val);
return val;
} }
static void vfio_rtl8168_window_quirk_write(void *opaque, hwaddr addr, static void vfio_rtl8168_quirk_address_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size) uint64_t data, unsigned size)
{ {
VFIOLegacyQuirk *quirk = opaque; VFIOrtl8168Quirk *rtl = opaque;
VFIOPCIDevice *vdev = quirk->vdev; VFIOPCIDevice *vdev = rtl->vdev;
rtl->enabled = false;
switch (addr) {
case 4: /* address */
if ((data & 0x7fff0000) == 0x10000) { /* MSI-X table */ if ((data & 0x7fff0000) == 0x10000) { /* MSI-X table */
quirk->data.flags = 1; /* Activate reads */ rtl->enabled = true;
quirk->data.address_match = data; rtl->addr = (uint32_t)data;
trace_vfio_rtl8168_quirk_write(vdev->vbasedev.name, data);
if (data & 0x80000000U) { /* Do write */ if (data & 0x80000000U) { /* Do write */
if (vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX) { if (vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX) {
hwaddr offset = data & 0xfff; hwaddr offset = data & 0xfff;
uint64_t val = quirk->data.address_mask; uint64_t val = rtl->data;
trace_vfio_rtl8168_quirk_msix(vdev->vbasedev.name, trace_vfio_quirk_rtl8168_msix_write(vdev->vbasedev.name,
(uint16_t)offset, val); (uint16_t)offset, val);
/* Write to the proper guest MSI-X table instead */ /* Write to the proper guest MSI-X table instead */
@ -843,22 +833,14 @@ static void vfio_rtl8168_window_quirk_write(void *opaque, hwaddr addr,
} }
return; /* Do not write guest MSI-X data to hardware */ return; /* Do not write guest MSI-X data to hardware */
} }
} else {
quirk->data.flags = 0; /* De-activate reads, non-MSI-X */
}
break;
case 0: /* data */
quirk->data.address_mask = data;
break;
} }
vfio_region_write(&vdev->bars[quirk->data.bar].region, vfio_region_write(&vdev->bars[2].region, addr + 0x74, data, size);
addr + 0x70, data, size);
} }
static const MemoryRegionOps vfio_rtl8168_window_quirk = { static const MemoryRegionOps vfio_rtl_address_quirk = {
.read = vfio_rtl8168_window_quirk_read, .read = vfio_rtl8168_quirk_address_read,
.write = vfio_rtl8168_window_quirk_write, .write = vfio_rtl8168_quirk_address_write,
.valid = { .valid = {
.min_access_size = 4, .min_access_size = 4,
.max_access_size = 4, .max_access_size = 4,
@ -867,32 +849,75 @@ static const MemoryRegionOps vfio_rtl8168_window_quirk = {
.endianness = DEVICE_LITTLE_ENDIAN, .endianness = DEVICE_LITTLE_ENDIAN,
}; };
static void vfio_probe_rtl8168_bar2_window_quirk(VFIOPCIDevice *vdev, int nr) static uint64_t vfio_rtl8168_quirk_data_read(void *opaque,
hwaddr addr, unsigned size)
{ {
PCIDevice *pdev = &vdev->pdev; VFIOrtl8168Quirk *rtl = opaque;
VFIOQuirk *quirk; VFIOPCIDevice *vdev = rtl->vdev;
VFIOLegacyQuirk *legacy; uint64_t data = vfio_region_read(&vdev->bars[2].region, addr + 0x74, size);
if (pci_get_word(pdev->config + PCI_VENDOR_ID) != PCI_VENDOR_ID_REALTEK || if (rtl->enabled && (vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX)) {
pci_get_word(pdev->config + PCI_DEVICE_ID) != 0x8168 || nr != 2) { hwaddr offset = rtl->addr & 0xfff;
memory_region_dispatch_read(&vdev->pdev.msix_table_mmio, offset,
&data, size, MEMTXATTRS_UNSPECIFIED);
trace_vfio_quirk_rtl8168_msix_read(vdev->vbasedev.name, offset, data);
}
return data;
}
static void vfio_rtl8168_quirk_data_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size)
{
VFIOrtl8168Quirk *rtl = opaque;
VFIOPCIDevice *vdev = rtl->vdev;
rtl->data = (uint32_t)data;
vfio_region_write(&vdev->bars[2].region, addr + 0x70, data, size);
}
static const MemoryRegionOps vfio_rtl_data_quirk = {
.read = vfio_rtl8168_quirk_data_read,
.write = vfio_rtl8168_quirk_data_write,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
.unaligned = false,
},
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void vfio_probe_rtl8168_bar2_quirk(VFIOPCIDevice *vdev, int nr)
{
VFIOQuirk *quirk;
VFIOrtl8168Quirk *rtl;
if (!vfio_pci_is(vdev, PCI_VENDOR_ID_REALTEK, 0x8168) || nr != 2) {
return; return;
} }
quirk = g_malloc0(sizeof(*quirk)); quirk = g_malloc0(sizeof(*quirk));
quirk->data = legacy = g_malloc0(sizeof(*legacy)); quirk->mem = g_malloc0_n(sizeof(MemoryRegion), 2);
quirk->mem = legacy->mem = g_malloc0_n(sizeof(MemoryRegion), 1); quirk->nr_mem = 2;
quirk->nr_mem = 1; quirk->data = rtl = g_malloc0(sizeof(*rtl));
legacy->vdev = vdev; rtl->vdev = vdev;
legacy->data.bar = nr;
memory_region_init_io(quirk->mem, OBJECT(vdev), &vfio_rtl8168_window_quirk, memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
legacy, "vfio-rtl8168-window-quirk", 8); &vfio_rtl_address_quirk, rtl,
"vfio-rtl8168-window-address-quirk", 4);
memory_region_add_subregion_overlap(&vdev->bars[nr].region.mem, memory_region_add_subregion_overlap(&vdev->bars[nr].region.mem,
0x70, quirk->mem, 1); 0x74, &quirk->mem[0], 1);
memory_region_init_io(&quirk->mem[1], OBJECT(vdev),
&vfio_rtl_data_quirk, rtl,
"vfio-rtl8168-window-data-quirk", 4);
memory_region_add_subregion_overlap(&vdev->bars[nr].region.mem,
0x70, &quirk->mem[1], 1);
QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next); QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next);
trace_vfio_rtl8168_quirk_enable(vdev->vbasedev.name); trace_vfio_quirk_rtl8168_probe(vdev->vbasedev.name);
} }
/* /*
@ -944,7 +969,7 @@ void vfio_bar_quirk_setup(VFIOPCIDevice *vdev, int nr)
vfio_probe_nvidia_bar5_window_quirk(vdev, nr); vfio_probe_nvidia_bar5_window_quirk(vdev, nr);
vfio_probe_nvidia_bar0_88000_quirk(vdev, nr); vfio_probe_nvidia_bar0_88000_quirk(vdev, nr);
vfio_probe_nvidia_bar0_1800_quirk(vdev, nr); vfio_probe_nvidia_bar0_1800_quirk(vdev, nr);
vfio_probe_rtl8168_bar2_window_quirk(vdev, nr); vfio_probe_rtl8168_bar2_quirk(vdev, nr);
} }
void vfio_bar_quirk_teardown(VFIOPCIDevice *vdev, int nr) void vfio_bar_quirk_teardown(VFIOPCIDevice *vdev, int nr)

8
trace-events
View File

@ -1552,10 +1552,6 @@ vfio_generic_quirk_read(const char * region_name, const char *name, int index, u
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_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" vfio_probe_ati_bar4_window_quirk(const char *name) "Enabled ATI/AMD BAR4 window quirk for device %s"
#issue with ) #issue with )
vfio_rtl8168_quirk_read(const char *name, const char *type, uint64_t val) "%s [%s]: 0x%"PRIx64
vfio_rtl8168_quirk_write(const char *name, uint64_t val) "%s [address]: 0x%"PRIx64
vfio_rtl8168_quirk_msix(const char *name, uint16_t offset, uint64_t val) "%s MSI-X table write[0x%x]: 0x%"PRIx64
vfio_rtl8168_quirk_enable(const char *name) "%s"
vfio_probe_ati_bar2_4000_quirk(const char *name) "Enabled ATI/AMD BAR2 0x4000 quirk for device %s" 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_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_88000_quirk(const char *name) "Enabled NVIDIA BAR0 0x88000 quirk for device %s"
@ -1588,6 +1584,10 @@ 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_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_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_3d0_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
vfio_quirk_rtl8168_probe(const char *name) "%s"
# hw/vfio/vfio-common.c # hw/vfio/vfio-common.c
vfio_region_write(const char *name, int index, uint64_t addr, uint64_t data, unsigned size) " (%s:region%d+0x%"PRIx64", 0x%"PRIx64 ", %d)" vfio_region_write(const char *name, int index, uint64_t addr, uint64_t data, unsigned size) " (%s:region%d+0x%"PRIx64", 0x%"PRIx64 ", %d)"