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linux/drivers/gpu/drm/radeon/rs600.c
Dave Airlie 698443d9ec drm/radeon/kms: disable VGA rendering engine before taking over VRAM 
Before we use any of VRAM, we need to disable the VGA rendering
engine, this render text mode into a graphical framebuffer
for scanout, however it does this on vblank, and can end up
overwriting the GART table and r600 shader objects.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-09-18 16:13:11 +10:00

441 lines
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/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "radeon_reg.h"
#include "radeon.h"
#include "avivod.h"
#include "rs600_reg_safe.h"
/* rs600 depends on : */
void r100_hdp_reset(struct radeon_device *rdev);
int r100_gui_wait_for_idle(struct radeon_device *rdev);
int r300_mc_wait_for_idle(struct radeon_device *rdev);
void r420_pipes_init(struct radeon_device *rdev);
/* This files gather functions specifics to :
* rs600
*
* Some of these functions might be used by newer ASICs.
*/
void rs600_gpu_init(struct radeon_device *rdev);
int rs600_mc_wait_for_idle(struct radeon_device *rdev);
void rs600_disable_vga(struct radeon_device *rdev);
/*
* GART.
*/
void rs600_gart_tlb_flush(struct radeon_device *rdev)
{
uint32_t tmp;
tmp = RREG32_MC(RS600_MC_PT0_CNTL);
tmp &= ~(RS600_INVALIDATE_ALL_L1_TLBS | RS600_INVALIDATE_L2_CACHE);
WREG32_MC(RS600_MC_PT0_CNTL, tmp);
tmp = RREG32_MC(RS600_MC_PT0_CNTL);
tmp |= RS600_INVALIDATE_ALL_L1_TLBS | RS600_INVALIDATE_L2_CACHE;
WREG32_MC(RS600_MC_PT0_CNTL, tmp);
tmp = RREG32_MC(RS600_MC_PT0_CNTL);
tmp &= ~(RS600_INVALIDATE_ALL_L1_TLBS | RS600_INVALIDATE_L2_CACHE);
WREG32_MC(RS600_MC_PT0_CNTL, tmp);
tmp = RREG32_MC(RS600_MC_PT0_CNTL);
}
int rs600_gart_init(struct radeon_device *rdev)
{
int r;
if (rdev->gart.table.vram.robj) {
WARN(1, "RS600 GART already initialized.\n");
return 0;
}
/* Initialize common gart structure */
r = radeon_gart_init(rdev);
if (r) {
return r;
}
rdev->gart.table_size = rdev->gart.num_gpu_pages * 8;
return radeon_gart_table_vram_alloc(rdev);
}
int rs600_gart_enable(struct radeon_device *rdev)
{
uint32_t tmp;
int r, i;
if (rdev->gart.table.vram.robj == NULL) {
dev_err(rdev->dev, "No VRAM object for PCIE GART.\n");
return -EINVAL;
}
r = radeon_gart_table_vram_pin(rdev);
if (r)
return r;
/* FIXME: setup default page */
WREG32_MC(RS600_MC_PT0_CNTL,
(RS600_EFFECTIVE_L2_CACHE_SIZE(6) |
RS600_EFFECTIVE_L2_QUEUE_SIZE(6)));
for (i = 0; i < 19; i++) {
WREG32_MC(RS600_MC_PT0_CLIENT0_CNTL + i,
(RS600_ENABLE_TRANSLATION_MODE_OVERRIDE |
RS600_SYSTEM_ACCESS_MODE_IN_SYS |
RS600_SYSTEM_APERTURE_UNMAPPED_ACCESS_DEFAULT_PAGE |
RS600_EFFECTIVE_L1_CACHE_SIZE(3) |
RS600_ENABLE_FRAGMENT_PROCESSING |
RS600_EFFECTIVE_L1_QUEUE_SIZE(3)));
}
/* System context map to GART space */
WREG32_MC(RS600_MC_PT0_SYSTEM_APERTURE_LOW_ADDR, rdev->mc.gtt_location);
tmp = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
WREG32_MC(RS600_MC_PT0_SYSTEM_APERTURE_HIGH_ADDR, tmp);
/* enable first context */
WREG32_MC(RS600_MC_PT0_CONTEXT0_FLAT_START_ADDR, rdev->mc.gtt_location);
tmp = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
WREG32_MC(RS600_MC_PT0_CONTEXT0_FLAT_END_ADDR, tmp);
WREG32_MC(RS600_MC_PT0_CONTEXT0_CNTL,
(RS600_ENABLE_PAGE_TABLE | RS600_PAGE_TABLE_TYPE_FLAT));
/* disable all other contexts */
for (i = 1; i < 8; i++) {
WREG32_MC(RS600_MC_PT0_CONTEXT0_CNTL + i, 0);
}
/* setup the page table */
WREG32_MC(RS600_MC_PT0_CONTEXT0_FLAT_BASE_ADDR,
rdev->gart.table_addr);
WREG32_MC(RS600_MC_PT0_CONTEXT0_DEFAULT_READ_ADDR, 0);
/* enable page tables */
tmp = RREG32_MC(RS600_MC_PT0_CNTL);
WREG32_MC(RS600_MC_PT0_CNTL, (tmp | RS600_ENABLE_PT));
tmp = RREG32_MC(RS600_MC_CNTL1);
WREG32_MC(RS600_MC_CNTL1, (tmp | RS600_ENABLE_PAGE_TABLES));
rs600_gart_tlb_flush(rdev);
rdev->gart.ready = true;
return 0;
}
void rs600_gart_disable(struct radeon_device *rdev)
{
uint32_t tmp;
/* FIXME: disable out of gart access */
WREG32_MC(RS600_MC_PT0_CNTL, 0);
tmp = RREG32_MC(RS600_MC_CNTL1);
tmp &= ~RS600_ENABLE_PAGE_TABLES;
WREG32_MC(RS600_MC_CNTL1, tmp);
if (rdev->gart.table.vram.robj) {
radeon_object_kunmap(rdev->gart.table.vram.robj);
radeon_object_unpin(rdev->gart.table.vram.robj);
}
}
void rs600_gart_fini(struct radeon_device *rdev)
{
rs600_gart_disable(rdev);
radeon_gart_table_vram_free(rdev);
radeon_gart_fini(rdev);
}
#define R600_PTE_VALID (1 << 0)
#define R600_PTE_SYSTEM (1 << 1)
#define R600_PTE_SNOOPED (1 << 2)
#define R600_PTE_READABLE (1 << 5)
#define R600_PTE_WRITEABLE (1 << 6)
int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
{
void __iomem *ptr = (void *)rdev->gart.table.vram.ptr;
if (i < 0 || i > rdev->gart.num_gpu_pages) {
return -EINVAL;
}
addr = addr & 0xFFFFFFFFFFFFF000ULL;
addr |= R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED;
addr |= R600_PTE_READABLE | R600_PTE_WRITEABLE;
writeq(addr, ((void __iomem *)ptr) + (i * 8));
return 0;
}
/*
* MC.
*/
void rs600_mc_disable_clients(struct radeon_device *rdev)
{
unsigned tmp;
if (r100_gui_wait_for_idle(rdev)) {
printk(KERN_WARNING "Failed to wait GUI idle while "
"programming pipes. Bad things might happen.\n");
}
radeon_avivo_vga_render_disable(rdev);
tmp = RREG32(AVIVO_D1VGA_CONTROL);
WREG32(AVIVO_D1VGA_CONTROL, tmp & ~AVIVO_DVGA_CONTROL_MODE_ENABLE);
tmp = RREG32(AVIVO_D2VGA_CONTROL);
WREG32(AVIVO_D2VGA_CONTROL, tmp & ~AVIVO_DVGA_CONTROL_MODE_ENABLE);
tmp = RREG32(AVIVO_D1CRTC_CONTROL);
WREG32(AVIVO_D1CRTC_CONTROL, tmp & ~AVIVO_CRTC_EN);
tmp = RREG32(AVIVO_D2CRTC_CONTROL);
WREG32(AVIVO_D2CRTC_CONTROL, tmp & ~AVIVO_CRTC_EN);
/* make sure all previous write got through */
tmp = RREG32(AVIVO_D2CRTC_CONTROL);
mdelay(1);
}
int rs600_mc_init(struct radeon_device *rdev)
{
uint32_t tmp;
int r;
if (r100_debugfs_rbbm_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for RBBM !\n");
}
rs600_gpu_init(rdev);
rs600_gart_disable(rdev);
/* Setup GPU memory space */
rdev->mc.vram_location = 0xFFFFFFFFUL;
rdev->mc.gtt_location = 0xFFFFFFFFUL;
r = radeon_mc_setup(rdev);
if (r) {
return r;
}
/* Program GPU memory space */
/* Enable bus master */
tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
WREG32(RADEON_BUS_CNTL, tmp);
/* FIXME: What does AGP means for such chipset ? */
WREG32_MC(RS600_MC_AGP_LOCATION, 0x0FFFFFFF);
/* FIXME: are this AGP reg in indirect MC range ? */
WREG32_MC(RS600_MC_AGP_BASE, 0);
WREG32_MC(RS600_MC_AGP_BASE_2, 0);
rs600_mc_disable_clients(rdev);
if (rs600_mc_wait_for_idle(rdev)) {
printk(KERN_WARNING "Failed to wait MC idle while "
"programming pipes. Bad things might happen.\n");
}
tmp = rdev->mc.vram_location + rdev->mc.mc_vram_size - 1;
tmp = REG_SET(RS600_MC_FB_TOP, tmp >> 16);
tmp |= REG_SET(RS600_MC_FB_START, rdev->mc.vram_location >> 16);
WREG32_MC(RS600_MC_FB_LOCATION, tmp);
WREG32(RS690_HDP_FB_LOCATION, rdev->mc.vram_location >> 16);
return 0;
}
void rs600_mc_fini(struct radeon_device *rdev)
{
}
/*
* Interrupts
*/
int rs600_irq_set(struct radeon_device *rdev)
{
uint32_t tmp = 0;
uint32_t mode_int = 0;
if (rdev->irq.sw_int) {
tmp |= RADEON_SW_INT_ENABLE;
}
if (rdev->irq.crtc_vblank_int[0]) {
mode_int |= AVIVO_D1MODE_INT_MASK;
}
if (rdev->irq.crtc_vblank_int[1]) {
mode_int |= AVIVO_D2MODE_INT_MASK;
}
WREG32(RADEON_GEN_INT_CNTL, tmp);
WREG32(AVIVO_DxMODE_INT_MASK, mode_int);
return 0;
}
static inline uint32_t rs600_irq_ack(struct radeon_device *rdev, u32 *r500_disp_int)
{
uint32_t irqs = RREG32(RADEON_GEN_INT_STATUS);
uint32_t irq_mask = RADEON_SW_INT_TEST;
if (irqs & AVIVO_DISPLAY_INT_STATUS) {
*r500_disp_int = RREG32(AVIVO_DISP_INTERRUPT_STATUS);
if (*r500_disp_int & AVIVO_D1_VBLANK_INTERRUPT) {
WREG32(AVIVO_D1MODE_VBLANK_STATUS, AVIVO_VBLANK_ACK);
}
if (*r500_disp_int & AVIVO_D2_VBLANK_INTERRUPT) {
WREG32(AVIVO_D2MODE_VBLANK_STATUS, AVIVO_VBLANK_ACK);
}
} else {
*r500_disp_int = 0;
}
if (irqs) {
WREG32(RADEON_GEN_INT_STATUS, irqs);
}
return irqs & irq_mask;
}
int rs600_irq_process(struct radeon_device *rdev)
{
uint32_t status;
uint32_t r500_disp_int;
status = rs600_irq_ack(rdev, &r500_disp_int);
if (!status && !r500_disp_int) {
return IRQ_NONE;
}
while (status || r500_disp_int) {
/* SW interrupt */
if (status & RADEON_SW_INT_TEST) {
radeon_fence_process(rdev);
}
/* Vertical blank interrupts */
if (r500_disp_int & AVIVO_D1_VBLANK_INTERRUPT) {
drm_handle_vblank(rdev->ddev, 0);
}
if (r500_disp_int & AVIVO_D2_VBLANK_INTERRUPT) {
drm_handle_vblank(rdev->ddev, 1);
}
status = rs600_irq_ack(rdev, &r500_disp_int);
}
return IRQ_HANDLED;
}
u32 rs600_get_vblank_counter(struct radeon_device *rdev, int crtc)
{
if (crtc == 0)
return RREG32(AVIVO_D1CRTC_FRAME_COUNT);
else
return RREG32(AVIVO_D2CRTC_FRAME_COUNT);
}
/*
* Global GPU functions
*/
void rs600_disable_vga(struct radeon_device *rdev)
{
unsigned tmp;
WREG32(0x330, 0);
WREG32(0x338, 0);
tmp = RREG32(0x300);
tmp &= ~(3 << 16);
WREG32(0x300, tmp);
WREG32(0x308, (1 << 8));
WREG32(0x310, rdev->mc.vram_location);
WREG32(0x594, 0);
}
int rs600_mc_wait_for_idle(struct radeon_device *rdev)
{
unsigned i;
uint32_t tmp;
for (i = 0; i < rdev->usec_timeout; i++) {
/* read MC_STATUS */
tmp = RREG32_MC(RS600_MC_STATUS);
if (tmp & RS600_MC_STATUS_IDLE) {
return 0;
}
DRM_UDELAY(1);
}
return -1;
}
void rs600_errata(struct radeon_device *rdev)
{
rdev->pll_errata = 0;
}
void rs600_gpu_init(struct radeon_device *rdev)
{
/* FIXME: HDP same place on rs600 ? */
r100_hdp_reset(rdev);
rs600_disable_vga(rdev);
/* FIXME: is this correct ? */
r420_pipes_init(rdev);
if (rs600_mc_wait_for_idle(rdev)) {
printk(KERN_WARNING "Failed to wait MC idle while "
"programming pipes. Bad things might happen.\n");
}
}
/*
* VRAM info.
*/
void rs600_vram_info(struct radeon_device *rdev)
{
/* FIXME: to do or is these values sane ? */
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;
}
void rs600_bandwidth_update(struct radeon_device *rdev)
{
/* FIXME: implement, should this be like rs690 ? */
}
/*
* Indirect registers accessor
*/
uint32_t rs600_mc_rreg(struct radeon_device *rdev, uint32_t reg)
{
uint32_t r;
WREG32(RS600_MC_INDEX,
((reg & RS600_MC_ADDR_MASK) | RS600_MC_IND_CITF_ARB0));
r = RREG32(RS600_MC_DATA);
return r;
}
void rs600_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
{
WREG32(RS600_MC_INDEX,
RS600_MC_IND_WR_EN | RS600_MC_IND_CITF_ARB0 |
((reg) & RS600_MC_ADDR_MASK));
WREG32(RS600_MC_DATA, v);
}
int rs600_init(struct radeon_device *rdev)
{
rdev->config.r300.reg_safe_bm = rs600_reg_safe_bm;
rdev->config.r300.reg_safe_bm_size = ARRAY_SIZE(rs600_reg_safe_bm);
return 0;
}
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