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path: root/hw/vfio/pci-quirks.c
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Diffstat (limited to 'hw/vfio/pci-quirks.c')
-rw-r--r--hw/vfio/pci-quirks.c177
1 files changed, 101 insertions, 76 deletions
diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
index 438b08274b..b3bb2f8f3a 100644
--- a/hw/vfio/pci-quirks.c
+++ b/hw/vfio/pci-quirks.c
@@ -784,81 +784,63 @@ 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_read(0000:05:00.0:BAR2+0x74, 4) = 0x1f000 // complete
*/
-static uint64_t vfio_rtl8168_window_quirk_read(void *opaque,
- hwaddr addr, unsigned size)
-{
- VFIOLegacyQuirk *quirk = opaque;
- VFIOPCIDevice *vdev = quirk->vdev;
- uint64_t val = 0;
+typedef struct VFIOrtl8168Quirk {
+ VFIOPCIDevice *vdev;
+ uint32_t addr;
+ uint32_t data;
+ bool enabled;
+} VFIOrtl8168Quirk;
- if (!quirk->data.flags) { /* Non-MSI-X table access */
- return vfio_region_read(&vdev->bars[quirk->data.bar].region,
- addr + 0x70, size);
- }
+static uint64_t vfio_rtl8168_quirk_address_read(void *opaque,
+ hwaddr addr, unsigned size)
+{
+ VFIOrtl8168Quirk *rtl = opaque;
+ VFIOPCIDevice *vdev = rtl->vdev;
+ uint64_t data = vfio_region_read(&vdev->bars[2].region, addr + 0x74, size);
- switch (addr) {
- 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;
+ if (rtl->enabled) {
+ data = rtl->addr ^ 0x80000000U; /* latch/complete */
+ trace_vfio_quirk_rtl8168_fake_latch(vdev->vbasedev.name, data);
}
- trace_vfio_rtl8168_quirk_read(vdev->vbasedev.name,
- addr ? "address" : "data", val);
- return val;
+ return data;
}
-static void vfio_rtl8168_window_quirk_write(void *opaque, hwaddr addr,
- uint64_t data, unsigned size)
+static void vfio_rtl8168_quirk_address_write(void *opaque, hwaddr addr,
+ uint64_t data, unsigned size)
{
- VFIOLegacyQuirk *quirk = opaque;
- VFIOPCIDevice *vdev = quirk->vdev;
+ VFIOrtl8168Quirk *rtl = opaque;
+ VFIOPCIDevice *vdev = rtl->vdev;
- switch (addr) {
- case 4: /* address */
- if ((data & 0x7fff0000) == 0x10000) { /* MSI-X table */
- quirk->data.flags = 1; /* Activate reads */
- quirk->data.address_match = data;
-
- trace_vfio_rtl8168_quirk_write(vdev->vbasedev.name, data);
-
- if (data & 0x80000000U) { /* Do write */
- if (vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX) {
- hwaddr offset = data & 0xfff;
- uint64_t val = quirk->data.address_mask;
-
- trace_vfio_rtl8168_quirk_msix(vdev->vbasedev.name,
- (uint16_t)offset, val);
-
- /* Write to the proper guest MSI-X table instead */
- memory_region_dispatch_write(&vdev->pdev.msix_table_mmio,
- offset, val, size,
- MEMTXATTRS_UNSPECIFIED);
- }
- return; /* Do not write guest MSI-X data to hardware */
+ rtl->enabled = false;
+
+ if ((data & 0x7fff0000) == 0x10000) { /* MSI-X table */
+ rtl->enabled = true;
+ rtl->addr = (uint32_t)data;
+
+ if (data & 0x80000000U) { /* Do write */
+ if (vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX) {
+ hwaddr offset = data & 0xfff;
+ uint64_t val = rtl->data;
+
+ trace_vfio_quirk_rtl8168_msix_write(vdev->vbasedev.name,
+ (uint16_t)offset, val);
+
+ /* Write to the proper guest MSI-X table instead */
+ memory_region_dispatch_write(&vdev->pdev.msix_table_mmio,
+ offset, val, size,
+ MEMTXATTRS_UNSPECIFIED);
}
- } else {
- quirk->data.flags = 0; /* De-activate reads, non-MSI-X */
+ return; /* Do not write guest MSI-X data to hardware */
}
- break;
- case 0: /* data */
- quirk->data.address_mask = data;
- break;
}
- vfio_region_write(&vdev->bars[quirk->data.bar].region,
- addr + 0x70, data, size);
+ vfio_region_write(&vdev->bars[2].region, addr + 0x74, data, size);
}
-static const MemoryRegionOps vfio_rtl8168_window_quirk = {
- .read = vfio_rtl8168_window_quirk_read,
- .write = vfio_rtl8168_window_quirk_write,
+static const MemoryRegionOps vfio_rtl_address_quirk = {
+ .read = vfio_rtl8168_quirk_address_read,
+ .write = vfio_rtl8168_quirk_address_write,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
@@ -867,32 +849,75 @@ static const MemoryRegionOps vfio_rtl8168_window_quirk = {
.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)
+{
+ VFIOrtl8168Quirk *rtl = opaque;
+ VFIOPCIDevice *vdev = rtl->vdev;
+ uint64_t data = vfio_region_read(&vdev->bars[2].region, addr + 0x74, size);
+
+ if (rtl->enabled && (vdev->pdev.cap_present & QEMU_PCI_CAP_MSIX)) {
+ 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)
{
- PCIDevice *pdev = &vdev->pdev;
VFIOQuirk *quirk;
- VFIOLegacyQuirk *legacy;
+ VFIOrtl8168Quirk *rtl;
- if (pci_get_word(pdev->config + PCI_VENDOR_ID) != PCI_VENDOR_ID_REALTEK ||
- pci_get_word(pdev->config + PCI_DEVICE_ID) != 0x8168 || nr != 2) {
+ if (!vfio_pci_is(vdev, PCI_VENDOR_ID_REALTEK, 0x8168) || nr != 2) {
return;
}
quirk = g_malloc0(sizeof(*quirk));
- quirk->data = legacy = g_malloc0(sizeof(*legacy));
- quirk->mem = legacy->mem = g_malloc0_n(sizeof(MemoryRegion), 1);
- quirk->nr_mem = 1;
- legacy->vdev = vdev;
- legacy->data.bar = nr;
+ quirk->mem = g_malloc0_n(sizeof(MemoryRegion), 2);
+ quirk->nr_mem = 2;
+ quirk->data = rtl = g_malloc0(sizeof(*rtl));
+ rtl->vdev = vdev;
+
+ memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
+ &vfio_rtl_address_quirk, rtl,
+ "vfio-rtl8168-window-address-quirk", 4);
+ memory_region_add_subregion_overlap(&vdev->bars[nr].region.mem,
+ 0x74, &quirk->mem[0], 1);
- memory_region_init_io(quirk->mem, OBJECT(vdev), &vfio_rtl8168_window_quirk,
- legacy, "vfio-rtl8168-window-quirk", 8);
+ 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);
+ 0x70, &quirk->mem[1], 1);
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_bar0_88000_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)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-15 01:56:06 +0000