* Map AtomBIOS specified by PCI rom into virtual memory

* Point AtomBIOS to PCI rom mapped in memory
* Things no longer crash, but we get an Invalid BIOS Magic error
  in the logs.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42543 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/graphics/radeon_hd/radeon_hd.h

@@ -71,8 +71,10 @@ struct radeon_shared_info {
 	area_id			mode_list_area;		// area containing display mode list
 	uint32			mode_count;
 
-	uint32			rom_base;			// AtomBIOS base location
-	uint32			rom_size;			// AtomBIOS size
+	uint32			rom_phys;			// rom base location
+	area_id			rom_area;			// area of mapped rom
+	uint32			rom_size;			// rom size
+	uint8*			rom;				// virtual memory mapped PCI ROM
 
 	display_mode	current_mode;
 	uint32			bytes_per_row;

src/add-ons/accelerants/radeon_hd/atombios/atom.cpp

@@ -1048,8 +1048,8 @@ atom_index_iio(atom_context *ctx, int base)
 }
 
 
-atom_context
-*atom_parse(card_info *card, void *bios)
+atom_context*
+atom_parse(card_info *card, void *bios)
 {
 	int base;
 	atom_context *ctx = (atom_context*)malloc(sizeof(atom_context));

src/add-ons/accelerants/radeon_hd/bios.cpp

@@ -55,7 +55,7 @@ bios_init()
 	atom_card_info->pll_write = _write32;
 
 	// Point AtomBIOS parser to card bios and malloc gAtomBIOS
-	gAtomBIOS = atom_parse(atom_card_info, (void*)gInfo->shared_info->rom_base);
+	gAtomBIOS = atom_parse(atom_card_info, gInfo->shared_info->rom);
 
 	if (gAtomBIOS == NULL) {
 		TRACE("%s: couldn't parse system AtomBIOS\n", __func__);

src/add-ons/kernel/drivers/graphics/radeon_hd/radeon_hd.cpp

@@ -84,6 +84,19 @@ radeon_hd_init(radeon_info &info)
 		return info.framebuffer_area;
 	}
 
+	// *** AtomBIOS mapping
+	AreaKeeper romMapper;
+	info.rom_area = romMapper.Map("radeon hd AtomBIOS",
+		(void *)info.pci->u.h0.rom_base,
+		info.pci->u.h0.rom_size,
+		B_ANY_KERNEL_ADDRESS, B_READ_AREA | B_WRITE_AREA,
+		(void **)&info.shared_info->rom);
+	if (frambufferMapper.InitCheck() < B_OK) {
+		dprintf(DEVICE_NAME ": card(%ld): could not map AtomBIOS!\n",
+			info.id);
+		return info.rom_area;
+	}
+
 	// Turn on write combining for the area
 	vm_set_area_memory_type(info.framebuffer_area,
 		info.pci->u.h0.base_registers[RHD_FB_BAR], B_MTR_WC);
@@ -91,6 +104,7 @@ radeon_hd_init(radeon_info &info)
 	sharedCreator.Detach();
 	mmioMapper.Detach();
 	frambufferMapper.Detach();
+	romMapper.Detach();
 
 	// Pass common information to accelerant
 	info.shared_info->device_id = info.device_id;
@@ -101,9 +115,9 @@ radeon_hd_init(radeon_info &info)
 		= info.pci->u.h0.base_registers[RHD_FB_BAR];
 	info.shared_info->frame_buffer_int
 		= read32(info.registers + R6XX_CONFIG_FB_BASE);
-
-	info.shared_info->rom_base = info.pci->u.h0.rom_base;
-		// Grab ROM base from PCI (AtomBIOS location for card)
+	info.shared_info->rom_area = info.rom_area;
+	info.shared_info->rom_phys = info.pci->u.h0.rom_base;
+	info.shared_info->rom_size = info.pci->u.h0.rom_size;
 
 	strcpy(info.shared_info->device_identifier, info.device_identifier);
 
@@ -167,5 +181,6 @@ radeon_hd_uninit(radeon_info &info)
 	delete_area(info.shared_area);
 	delete_area(info.registers_area);
 	delete_area(info.framebuffer_area);
+	delete_area(info.rom_area);
 }
 

src/add-ons/kernel/drivers/graphics/radeon_hd/radeon_hd_private.h

@@ -27,6 +27,7 @@ struct radeon_info {
 	uint8*			registers;
 	area_id			registers_area;
 	area_id			framebuffer_area;
+	area_id			rom_area;
 
 	struct radeon_shared_info* shared_info;
 	area_id			shared_area;