[Qemu-devel] [PULL 1/8] ati-vga: Add registers for getting apertures

[Gerd Hoffmann <kraxel@redhat.com>]

From: BALATON Zoltan <balaton@eik.bme.hu>

Some drivers (e.g. Linux radeon drm and MacOS) access these to find
apertures to access card. Try to implement these but not sure these
are correct yet.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: b2df13655feecd63c0049ec45fd87d1026f67091.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/display/ati_regs.h |  5 +++++
 hw/display/ati.c      | 15 +++++++++++++++
 hw/display/ati_dbg.c  |  5 +++++
 3 files changed, 25 insertions(+)

diff --git a/hw/display/ati_regs.h b/hw/display/ati_regs.h
index d7155c93d53b..81fb5302c036 100644
--- a/hw/display/ati_regs.h
+++ b/hw/display/ati_regs.h
@@ -46,6 +46,11 @@
 #define CNFG_CNTL                               0x00e0
 #define GEN_RESET_CNTL                          0x00f0
 #define CNFG_MEMSIZE                            0x00f8
+#define CONFIG_APER_0_BASE                      0x0100
+#define CONFIG_APER_1_BASE                      0x0104
+#define CONFIG_APER_SIZE                        0x0108
+#define CONFIG_REG_1_BASE                       0x010c
+#define CONFIG_REG_APER_SIZE                    0x0110
 #define MEM_CNTL                                0x0140
 #define MC_FB_LOCATION                          0x0148
 #define MC_AGP_LOCATION                         0x014C
diff --git a/hw/display/ati.c b/hw/display/ati.c
index 35f49a591b7b..6cdcbef238fe 100644
--- a/hw/display/ati.c
+++ b/hw/display/ati.c
@@ -307,6 +307,21 @@ static uint64_t ati_mm_read(void *opaque, hwaddr addr, unsigned int size)
     case CNFG_MEMSIZE:
         val = s->vga.vram_size;
         break;
+    case CONFIG_APER_0_BASE:
+    case CONFIG_APER_1_BASE:
+        val = pci_default_read_config(&s->dev,
+                                      PCI_BASE_ADDRESS_0, size) & 0xfffffff0;
+        break;
+    case CONFIG_APER_SIZE:
+        val = s->vga.vram_size;
+        break;
+    case CONFIG_REG_1_BASE:
+        val = pci_default_read_config(&s->dev,
+                                      PCI_BASE_ADDRESS_2, size) & 0xfffffff0;
+        break;
+    case CONFIG_REG_APER_SIZE:
+        val = memory_region_size(&s->mm);
+        break;
     case MC_STATUS:
         val = 5;
         break;
diff --git a/hw/display/ati_dbg.c b/hw/display/ati_dbg.c
index 88b3a11315d8..cbc52025d01c 100644
--- a/hw/display/ati_dbg.c
+++ b/hw/display/ati_dbg.c
@@ -28,6 +28,11 @@ static struct ati_regdesc ati_reg_names[] = {
     {"CNFG_CNTL", 0x00e0},
     {"GEN_RESET_CNTL", 0x00f0},
     {"CNFG_MEMSIZE", 0x00f8},
+    {"CONFIG_APER_0_BASE", 0x0100},
+    {"CONFIG_APER_1_BASE", 0x0104},
+    {"CONFIG_APER_SIZE", 0x0108},
+    {"CONFIG_REG_1_BASE", 0x010c},
+    {"CONFIG_REG_APER_SIZE", 0x0110},
     {"MEM_CNTL", 0x0140},
     {"MC_FB_LOCATION", 0x0148},
     {"MC_AGP_LOCATION", 0x014C},
-- 
2.18.1