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Commit 312fec14 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm: Initial KMS driver for AST (ASpeed Technologies) 2000 series (v2) 



This is the initial driver for the Aspeed Technologies chips found in
servers. This driver supports the AST 2000, 2100, 2200, 2150 and 2300. It
doesn't support the AST11xx due to lack of hw to test it on, and them requiring
different codepaths.

This driver is intended to be used with xf86-video-modesetting in userspace.

This driver has a slightly different design than other KMS drivers, but
future server chips will probably share similiar setup. As these GPUs commonly
have low video RAM, it doesn't make sense to put the kms console in VRAM
always. This driver places the kms console into system RAM, and does dirty
updates to a copy in video RAM. When userspace sets a new scanout buffer,
it forcefully evicts the video RAM console, and X can create a framebuffer
that can use all of of video RAM.

This driver uses TTM but in a very simple fashion to control the eviction
to system RAM of the console, and multiple servers.

v2: add s/r support, fix Kconfig.

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent db2e034d

drivers/gpu/drm/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -186,3 +186,6 @@ source "drivers/gpu/drm/vmwgfx/Kconfig" 
source "drivers/gpu/drm/gma500/Kconfig"



source "drivers/gpu/drm/udl/Kconfig"



source "drivers/gpu/drm/ast/Kconfig"

drivers/gpu/drm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -42,4 +42,5 @@ obj-$(CONFIG_DRM_NOUVEAU) +=nouveau/ 
obj-$(CONFIG_DRM_EXYNOS) +=exynos/

obj-$(CONFIG_DRM_GMA500) += gma500/

obj-$(CONFIG_DRM_UDL) += udl/

obj-$(CONFIG_DRM_AST) += ast/

obj-y			+= i2c/

drivers/gpu/drm/ast/Kconfig

0 → 100644
+15 −0
Original line number Diff line number Diff line 
config DRM_AST

	tristate "AST server chips"

	depends on DRM && PCI && EXPERIMENTAL

	select DRM_TTM

	select FB_SYS_COPYAREA

	select FB_SYS_FILLRECT

	select FB_SYS_IMAGEBLIT

	select DRM_KMS_HELPER

	help

	 Say yes for experimental AST GPU driver. Do not enable

	 this driver without having a working -modesetting,

	 and a version of AST that knows to fail if KMS

	 is bound to the driver. These GPUs are commonly found

	 in server chipsets.

drivers/gpu/drm/ast/Makefile

0 → 100644
+9 −0
Original line number Diff line number Diff line 
#

# Makefile for the drm device driver.  This driver provides support for the

# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.



ccflags-y := -Iinclude/drm



ast-y := ast_drv.o ast_main.o ast_mode.o ast_fb.o ast_ttm.o ast_post.o



obj-$(CONFIG_DRM_AST) := ast.o
 
 No newline at end of file

drivers/gpu/drm/ast/ast_dram_tables.h

0 → 100644
+144 −0
Original line number Diff line number Diff line 
#ifndef AST_DRAM_TABLES_H

#define AST_DRAM_TABLES_H



/* DRAM timing tables */

struct ast_dramstruct {

	u16 index;

	u32 data;

};



static const struct ast_dramstruct ast2000_dram_table_data[] = {

	{ 0x0108, 0x00000000 },

	{ 0x0120, 0x00004a21 },

	{ 0xFF00, 0x00000043 },

	{ 0x0000, 0xFFFFFFFF },

	{ 0x0004, 0x00000089 },

	{ 0x0008, 0x22331353 },

	{ 0x000C, 0x0d07000b },

	{ 0x0010, 0x11113333 },

	{ 0x0020, 0x00110350 },

	{ 0x0028, 0x1e0828f0 },

	{ 0x0024, 0x00000001 },

	{ 0x001C, 0x00000000 },

	{ 0x0014, 0x00000003 },

	{ 0xFF00, 0x00000043 },

	{ 0x0018, 0x00000131 },

	{ 0x0014, 0x00000001 },

	{ 0xFF00, 0x00000043 },

	{ 0x0018, 0x00000031 },

	{ 0x0014, 0x00000001 },

	{ 0xFF00, 0x00000043 },

	{ 0x0028, 0x1e0828f1 },

	{ 0x0024, 0x00000003 },

	{ 0x002C, 0x1f0f28fb },

	{ 0x0030, 0xFFFFFE01 },

	{ 0xFFFF, 0xFFFFFFFF }

};



static const struct ast_dramstruct ast1100_dram_table_data[] = {

	{ 0x2000, 0x1688a8a8 },

	{ 0x2020, 0x000041f0 },

	{ 0xFF00, 0x00000043 },

	{ 0x0000, 0xfc600309 },

	{ 0x006C, 0x00909090 },

	{ 0x0064, 0x00050000 },

	{ 0x0004, 0x00000585 },

	{ 0x0008, 0x0011030f },

	{ 0x0010, 0x22201724 },

	{ 0x0018, 0x1e29011a },

	{ 0x0020, 0x00c82222 },

	{ 0x0014, 0x01001523 },

	{ 0x001C, 0x1024010d },

	{ 0x0024, 0x00cb2522 },

	{ 0x0038, 0xffffff82 },

	{ 0x003C, 0x00000000 },

	{ 0x0040, 0x00000000 },

	{ 0x0044, 0x00000000 },

	{ 0x0048, 0x00000000 },

	{ 0x004C, 0x00000000 },

	{ 0x0050, 0x00000000 },

	{ 0x0054, 0x00000000 },

	{ 0x0058, 0x00000000 },

	{ 0x005C, 0x00000000 },

	{ 0x0060, 0x032aa02a },

	{ 0x0064, 0x002d3000 },

	{ 0x0068, 0x00000000 },

	{ 0x0070, 0x00000000 },

	{ 0x0074, 0x00000000 },

	{ 0x0078, 0x00000000 },

	{ 0x007C, 0x00000000 },

	{ 0x0034, 0x00000001 },

	{ 0xFF00, 0x00000043 },

	{ 0x002C, 0x00000732 },

	{ 0x0030, 0x00000040 },

	{ 0x0028, 0x00000005 },

	{ 0x0028, 0x00000007 },

	{ 0x0028, 0x00000003 },

	{ 0x0028, 0x00000001 },

	{ 0x000C, 0x00005a08 },

	{ 0x002C, 0x00000632 },

	{ 0x0028, 0x00000001 },

	{ 0x0030, 0x000003c0 },

	{ 0x0028, 0x00000003 },

	{ 0x0030, 0x00000040 },

	{ 0x0028, 0x00000003 },

	{ 0x000C, 0x00005a21 },

	{ 0x0034, 0x00007c03 },

	{ 0x0120, 0x00004c41 },

	{ 0xffff, 0xffffffff },

};



static const struct ast_dramstruct ast2100_dram_table_data[] = {

	{ 0x2000, 0x1688a8a8 },

	{ 0x2020, 0x00004120 },

	{ 0xFF00, 0x00000043 },

	{ 0x0000, 0xfc600309 },

	{ 0x006C, 0x00909090 },

	{ 0x0064, 0x00070000 },

	{ 0x0004, 0x00000489 },

	{ 0x0008, 0x0011030f },

	{ 0x0010, 0x32302926 },

	{ 0x0018, 0x274c0122 },

	{ 0x0020, 0x00ce2222 },

	{ 0x0014, 0x01001523 },

	{ 0x001C, 0x1024010d },

	{ 0x0024, 0x00cb2522 },

	{ 0x0038, 0xffffff82 },

	{ 0x003C, 0x00000000 },

	{ 0x0040, 0x00000000 },

	{ 0x0044, 0x00000000 },

	{ 0x0048, 0x00000000 },

	{ 0x004C, 0x00000000 },

	{ 0x0050, 0x00000000 },

	{ 0x0054, 0x00000000 },

	{ 0x0058, 0x00000000 },

	{ 0x005C, 0x00000000 },

	{ 0x0060, 0x0f2aa02a },

	{ 0x0064, 0x003f3005 },

	{ 0x0068, 0x02020202 },

	{ 0x0070, 0x00000000 },

	{ 0x0074, 0x00000000 },

	{ 0x0078, 0x00000000 },

	{ 0x007C, 0x00000000 },

	{ 0x0034, 0x00000001 },

	{ 0xFF00, 0x00000043 },

	{ 0x002C, 0x00000942 },

	{ 0x0030, 0x00000040 },

	{ 0x0028, 0x00000005 },

	{ 0x0028, 0x00000007 },

	{ 0x0028, 0x00000003 },

	{ 0x0028, 0x00000001 },

	{ 0x000C, 0x00005a08 },

	{ 0x002C, 0x00000842 },

	{ 0x0028, 0x00000001 },

	{ 0x0030, 0x000003c0 },

	{ 0x0028, 0x00000003 },

	{ 0x0030, 0x00000040 },

	{ 0x0028, 0x00000003 },

	{ 0x000C, 0x00005a21 },

	{ 0x0034, 0x00007c03 },

	{ 0x0120, 0x00005061 },

	{ 0xffff, 0xffffffff },

};



#endif