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linux/drivers/gpu/drm/radeon/rs690.c
Adis Hamzić e49f3959a9 radeon: Fix system hang issue when using KMS with older cards 
The current radeon driver initialization routines, when using KMS, are written
so that the IRQ installation routine is called before initializing the WB buffer
and the CP rings. With some ASICs, though, the IRQ routine tries to access the
GFX_INDEX ring causing a call to RREG32 with the value of -1 in
radeon_fence_read. This, in turn causes the system to completely hang with some
cards, requiring a hard reset.

A call stack that can cause such a hang looks like this (using rv515 ASIC for the
example here):
 * rv515_init (rv515.c)
 * radeon_irq_kms_init (radeon_irq_kms.c)
 * drm_irq_install (drm_irq.c)
 * radeon_driver_irq_preinstall_kms (radeon_irq_kms.c)
 * rs600_irq_process (rs600.c)
 * radeon_fence_process - due to SW interrupt (radeon_fence.c)
 * radeon_fence_read (radeon_fence.c)
 * hang due to RREG32(-1)

The patch moves the IRQ installation to the card startup routine, after the ring
has been initialized, but before the IRQ has been set. This fixes the issue, but
requires a check to see if the IRQ is already installed, as is the case in the
system resume codepath.
I have tested the patch on three machines using the rv515, the rv770 and the
evergreen ASIC. They worked without issues.

This seems to be a known issue and has been reported on several bug tracking
sites by various distributions (see links below). Most of reports recommend
booting the system with KMS disabled and then enabling KMS by reloading the
radeon module. For some reason, this was indeed a usable workaround, however,
UMS is now deprecated and disabled by default.

Bug reports:
https://bugzilla.redhat.com/show_bug.cgi?id=845745
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/561789
https://bbs.archlinux.org/viewtopic.php?id=156964

Signed-off-by: Adis Hamzić <adis@hamzadis.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2013-06-03 10:17:54 -04:00

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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 <drm/drmP.h>
#include "radeon.h"
#include "radeon_asic.h"
#include "atom.h"
#include "rs690d.h"
int rs690_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(R_000090_MC_SYSTEM_STATUS);
if (G_000090_MC_SYSTEM_IDLE(tmp))
return 0;
udelay(1);
}
return -1;
}
static void rs690_gpu_init(struct radeon_device *rdev)
{
/* FIXME: is this correct ? */
r420_pipes_init(rdev);
if (rs690_mc_wait_for_idle(rdev)) {
printk(KERN_WARNING "Failed to wait MC idle while "
"programming pipes. Bad things might happen.\n");
}
}
union igp_info {
struct _ATOM_INTEGRATED_SYSTEM_INFO info;
struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_v2;
};
void rs690_pm_info(struct radeon_device *rdev)
{
int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
union igp_info *info;
uint16_t data_offset;
uint8_t frev, crev;
fixed20_12 tmp;
if (atom_parse_data_header(rdev->mode_info.atom_context, index, NULL,
&frev, &crev, &data_offset)) {
info = (union igp_info *)(rdev->mode_info.atom_context->bios + data_offset);
/* Get various system informations from bios */
switch (crev) {
case 1:
tmp.full = dfixed_const(100);
rdev->pm.igp_sideport_mclk.full = dfixed_const(le32_to_cpu(info->info.ulBootUpMemoryClock));
rdev->pm.igp_sideport_mclk.full = dfixed_div(rdev->pm.igp_sideport_mclk, tmp);
if (le16_to_cpu(info->info.usK8MemoryClock))
rdev->pm.igp_system_mclk.full = dfixed_const(le16_to_cpu(info->info.usK8MemoryClock));
else if (rdev->clock.default_mclk) {
rdev->pm.igp_system_mclk.full = dfixed_const(rdev->clock.default_mclk);
rdev->pm.igp_system_mclk.full = dfixed_div(rdev->pm.igp_system_mclk, tmp);
} else
rdev->pm.igp_system_mclk.full = dfixed_const(400);
rdev->pm.igp_ht_link_clk.full = dfixed_const(le16_to_cpu(info->info.usFSBClock));
rdev->pm.igp_ht_link_width.full = dfixed_const(info->info.ucHTLinkWidth);
break;
case 2:
tmp.full = dfixed_const(100);
rdev->pm.igp_sideport_mclk.full = dfixed_const(le32_to_cpu(info->info_v2.ulBootUpSidePortClock));
rdev->pm.igp_sideport_mclk.full = dfixed_div(rdev->pm.igp_sideport_mclk, tmp);
if (le32_to_cpu(info->info_v2.ulBootUpUMAClock))
rdev->pm.igp_system_mclk.full = dfixed_const(le32_to_cpu(info->info_v2.ulBootUpUMAClock));
else if (rdev->clock.default_mclk)
rdev->pm.igp_system_mclk.full = dfixed_const(rdev->clock.default_mclk);
else
rdev->pm.igp_system_mclk.full = dfixed_const(66700);
rdev->pm.igp_system_mclk.full = dfixed_div(rdev->pm.igp_system_mclk, tmp);
rdev->pm.igp_ht_link_clk.full = dfixed_const(le32_to_cpu(info->info_v2.ulHTLinkFreq));
rdev->pm.igp_ht_link_clk.full = dfixed_div(rdev->pm.igp_ht_link_clk, tmp);
rdev->pm.igp_ht_link_width.full = dfixed_const(le16_to_cpu(info->info_v2.usMinHTLinkWidth));
break;
default:
/* We assume the slower possible clock ie worst case */
rdev->pm.igp_sideport_mclk.full = dfixed_const(200);
rdev->pm.igp_system_mclk.full = dfixed_const(200);
rdev->pm.igp_ht_link_clk.full = dfixed_const(1000);
rdev->pm.igp_ht_link_width.full = dfixed_const(8);
DRM_ERROR("No integrated system info for your GPU, using safe default\n");
break;
}
} else {
/* We assume the slower possible clock ie worst case */
rdev->pm.igp_sideport_mclk.full = dfixed_const(200);
rdev->pm.igp_system_mclk.full = dfixed_const(200);
rdev->pm.igp_ht_link_clk.full = dfixed_const(1000);
rdev->pm.igp_ht_link_width.full = dfixed_const(8);
DRM_ERROR("No integrated system info for your GPU, using safe default\n");
}
/* Compute various bandwidth */
/* k8_bandwidth = (memory_clk / 2) * 2 * 8 * 0.5 = memory_clk * 4 */
tmp.full = dfixed_const(4);
rdev->pm.k8_bandwidth.full = dfixed_mul(rdev->pm.igp_system_mclk, tmp);
/* ht_bandwidth = ht_clk * 2 * ht_width / 8 * 0.8
* = ht_clk * ht_width / 5
*/
tmp.full = dfixed_const(5);
rdev->pm.ht_bandwidth.full = dfixed_mul(rdev->pm.igp_ht_link_clk,
rdev->pm.igp_ht_link_width);
rdev->pm.ht_bandwidth.full = dfixed_div(rdev->pm.ht_bandwidth, tmp);
if (tmp.full < rdev->pm.max_bandwidth.full) {
/* HT link is a limiting factor */
rdev->pm.max_bandwidth.full = tmp.full;
}
/* sideport_bandwidth = (sideport_clk / 2) * 2 * 2 * 0.7
* = (sideport_clk * 14) / 10
*/
tmp.full = dfixed_const(14);
rdev->pm.sideport_bandwidth.full = dfixed_mul(rdev->pm.igp_sideport_mclk, tmp);
tmp.full = dfixed_const(10);
rdev->pm.sideport_bandwidth.full = dfixed_div(rdev->pm.sideport_bandwidth, tmp);
}
static void rs690_mc_init(struct radeon_device *rdev)
{
u64 base;
uint32_t h_addr, l_addr;
unsigned long long k8_addr;
rs400_gart_adjust_size(rdev);
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;
rdev->mc.real_vram_size = RREG32(RADEON_CONFIG_MEMSIZE);
rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
rdev->mc.visible_vram_size = rdev->mc.aper_size;
base = RREG32_MC(R_000100_MCCFG_FB_LOCATION);
base = G_000100_MC_FB_START(base) << 16;
rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
/* Use K8 direct mapping for fast fb access. */
rdev->fastfb_working = false;
h_addr = G_00005F_K8_ADDR_EXT(RREG32_MC(R_00005F_MC_MISC_UMA_CNTL));
l_addr = RREG32_MC(R_00001E_K8_FB_LOCATION);
k8_addr = ((unsigned long long)h_addr) << 32 | l_addr;
#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
if (k8_addr + rdev->mc.visible_vram_size < 0x100000000ULL)
#endif
{
/* FastFB shall be used with UMA memory. Here it is simply disabled when sideport
* memory is present.
*/
if (rdev->mc.igp_sideport_enabled == false && radeon_fastfb == 1) {
DRM_INFO("Direct mapping: aper base at 0x%llx, replaced by direct mapping base 0x%llx.\n",
(unsigned long long)rdev->mc.aper_base, k8_addr);
rdev->mc.aper_base = (resource_size_t)k8_addr;
rdev->fastfb_working = true;
}
}
rs690_pm_info(rdev);
radeon_vram_location(rdev, &rdev->mc, base);
rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
radeon_gtt_location(rdev, &rdev->mc);
radeon_update_bandwidth_info(rdev);
}
void rs690_line_buffer_adjust(struct radeon_device *rdev,
struct drm_display_mode *mode1,
struct drm_display_mode *mode2)
{
u32 tmp;
/*
* Line Buffer Setup
* There is a single line buffer shared by both display controllers.
* R_006520_DC_LB_MEMORY_SPLIT controls how that line buffer is shared between
* the display controllers. The paritioning can either be done
* manually or via one of four preset allocations specified in bits 1:0:
* 0 - line buffer is divided in half and shared between crtc
* 1 - D1 gets 3/4 of the line buffer, D2 gets 1/4
* 2 - D1 gets the whole buffer
* 3 - D1 gets 1/4 of the line buffer, D2 gets 3/4
* Setting bit 2 of R_006520_DC_LB_MEMORY_SPLIT controls switches to manual
* allocation mode. In manual allocation mode, D1 always starts at 0,
* D1 end/2 is specified in bits 14:4; D2 allocation follows D1.
*/
tmp = RREG32(R_006520_DC_LB_MEMORY_SPLIT) & C_006520_DC_LB_MEMORY_SPLIT;
tmp &= ~C_006520_DC_LB_MEMORY_SPLIT_MODE;
/* auto */
if (mode1 && mode2) {
if (mode1->hdisplay > mode2->hdisplay) {
if (mode1->hdisplay > 2560)
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_3Q_D2_1Q;
else
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
} else if (mode2->hdisplay > mode1->hdisplay) {
if (mode2->hdisplay > 2560)
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_1Q_D2_3Q;
else
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
} else
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
} else if (mode1) {
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_ONLY;
} else if (mode2) {
tmp |= V_006520_DC_LB_MEMORY_SPLIT_D1_1Q_D2_3Q;
}
WREG32(R_006520_DC_LB_MEMORY_SPLIT, tmp);
}
struct rs690_watermark {
u32 lb_request_fifo_depth;
fixed20_12 num_line_pair;
fixed20_12 estimated_width;
fixed20_12 worst_case_latency;
fixed20_12 consumption_rate;
fixed20_12 active_time;
fixed20_12 dbpp;
fixed20_12 priority_mark_max;
fixed20_12 priority_mark;
fixed20_12 sclk;
};
static void rs690_crtc_bandwidth_compute(struct radeon_device *rdev,
struct radeon_crtc *crtc,
struct rs690_watermark *wm)
{
struct drm_display_mode *mode = &crtc->base.mode;
fixed20_12 a, b, c;
fixed20_12 pclk, request_fifo_depth, tolerable_latency, estimated_width;
fixed20_12 consumption_time, line_time, chunk_time, read_delay_latency;
if (!crtc->base.enabled) {
/* FIXME: wouldn't it better to set priority mark to maximum */
wm->lb_request_fifo_depth = 4;
return;
}
if (crtc->vsc.full > dfixed_const(2))
wm->num_line_pair.full = dfixed_const(2);
else
wm->num_line_pair.full = dfixed_const(1);
b.full = dfixed_const(mode->crtc_hdisplay);
c.full = dfixed_const(256);
a.full = dfixed_div(b, c);
request_fifo_depth.full = dfixed_mul(a, wm->num_line_pair);
request_fifo_depth.full = dfixed_ceil(request_fifo_depth);
if (a.full < dfixed_const(4)) {
wm->lb_request_fifo_depth = 4;
} else {
wm->lb_request_fifo_depth = dfixed_trunc(request_fifo_depth);
}
/* Determine consumption rate
* pclk = pixel clock period(ns) = 1000 / (mode.clock / 1000)
* vtaps = number of vertical taps,
* vsc = vertical scaling ratio, defined as source/destination
* hsc = horizontal scaling ration, defined as source/destination
*/
a.full = dfixed_const(mode->clock);
b.full = dfixed_const(1000);
a.full = dfixed_div(a, b);
pclk.full = dfixed_div(b, a);
if (crtc->rmx_type != RMX_OFF) {
b.full = dfixed_const(2);
if (crtc->vsc.full > b.full)
b.full = crtc->vsc.full;
b.full = dfixed_mul(b, crtc->hsc);
c.full = dfixed_const(2);
b.full = dfixed_div(b, c);
consumption_time.full = dfixed_div(pclk, b);
} else {
consumption_time.full = pclk.full;
}
a.full = dfixed_const(1);
wm->consumption_rate.full = dfixed_div(a, consumption_time);
/* Determine line time
* LineTime = total time for one line of displayhtotal
* LineTime = total number of horizontal pixels
* pclk = pixel clock period(ns)
*/
a.full = dfixed_const(crtc->base.mode.crtc_htotal);
line_time.full = dfixed_mul(a, pclk);
/* Determine active time
* ActiveTime = time of active region of display within one line,
* hactive = total number of horizontal active pixels
* htotal = total number of horizontal pixels
*/
a.full = dfixed_const(crtc->base.mode.crtc_htotal);
b.full = dfixed_const(crtc->base.mode.crtc_hdisplay);
wm->active_time.full = dfixed_mul(line_time, b);
wm->active_time.full = dfixed_div(wm->active_time, a);
/* Maximun bandwidth is the minimun bandwidth of all component */
rdev->pm.max_bandwidth = rdev->pm.core_bandwidth;
if (rdev->mc.igp_sideport_enabled) {
if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full &&
rdev->pm.sideport_bandwidth.full)
rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth;
read_delay_latency.full = dfixed_const(370 * 800 * 1000);
read_delay_latency.full = dfixed_div(read_delay_latency,
rdev->pm.igp_sideport_mclk);
} else {
if (rdev->pm.max_bandwidth.full > rdev->pm.k8_bandwidth.full &&
rdev->pm.k8_bandwidth.full)
rdev->pm.max_bandwidth = rdev->pm.k8_bandwidth;
if (rdev->pm.max_bandwidth.full > rdev->pm.ht_bandwidth.full &&
rdev->pm.ht_bandwidth.full)
rdev->pm.max_bandwidth = rdev->pm.ht_bandwidth;
read_delay_latency.full = dfixed_const(5000);
}
/* sclk = system clocks(ns) = 1000 / max_bandwidth / 16 */
a.full = dfixed_const(16);
rdev->pm.sclk.full = dfixed_mul(rdev->pm.max_bandwidth, a);
a.full = dfixed_const(1000);
rdev->pm.sclk.full = dfixed_div(a, rdev->pm.sclk);
/* Determine chunk time
* ChunkTime = the time it takes the DCP to send one chunk of data
* to the LB which consists of pipeline delay and inter chunk gap
* sclk = system clock(ns)
*/
a.full = dfixed_const(256 * 13);
chunk_time.full = dfixed_mul(rdev->pm.sclk, a);
a.full = dfixed_const(10);
chunk_time.full = dfixed_div(chunk_time, a);
/* Determine the worst case latency
* NumLinePair = Number of line pairs to request(1=2 lines, 2=4 lines)
* WorstCaseLatency = worst case time from urgent to when the MC starts
* to return data
* READ_DELAY_IDLE_MAX = constant of 1us
* ChunkTime = time it takes the DCP to send one chunk of data to the LB
* which consists of pipeline delay and inter chunk gap
*/
if (dfixed_trunc(wm->num_line_pair) > 1) {
a.full = dfixed_const(3);
wm->worst_case_latency.full = dfixed_mul(a, chunk_time);
wm->worst_case_latency.full += read_delay_latency.full;
} else {
a.full = dfixed_const(2);
wm->worst_case_latency.full = dfixed_mul(a, chunk_time);
wm->worst_case_latency.full += read_delay_latency.full;
}
/* Determine the tolerable latency
* TolerableLatency = Any given request has only 1 line time
* for the data to be returned
* LBRequestFifoDepth = Number of chunk requests the LB can
* put into the request FIFO for a display
* LineTime = total time for one line of display
* ChunkTime = the time it takes the DCP to send one chunk
* of data to the LB which consists of
* pipeline delay and inter chunk gap
*/
if ((2+wm->lb_request_fifo_depth) >= dfixed_trunc(request_fifo_depth)) {
tolerable_latency.full = line_time.full;
} else {
tolerable_latency.full = dfixed_const(wm->lb_request_fifo_depth - 2);
tolerable_latency.full = request_fifo_depth.full - tolerable_latency.full;
tolerable_latency.full = dfixed_mul(tolerable_latency, chunk_time);
tolerable_latency.full = line_time.full - tolerable_latency.full;
}
/* We assume worst case 32bits (4 bytes) */
wm->dbpp.full = dfixed_const(4 * 8);
/* Determine the maximum priority mark
* width = viewport width in pixels
*/
a.full = dfixed_const(16);
wm->priority_mark_max.full = dfixed_const(crtc->base.mode.crtc_hdisplay);
wm->priority_mark_max.full = dfixed_div(wm->priority_mark_max, a);
wm->priority_mark_max.full = dfixed_ceil(wm->priority_mark_max);
/* Determine estimated width */
estimated_width.full = tolerable_latency.full - wm->worst_case_latency.full;
estimated_width.full = dfixed_div(estimated_width, consumption_time);
if (dfixed_trunc(estimated_width) > crtc->base.mode.crtc_hdisplay) {
wm->priority_mark.full = dfixed_const(10);
} else {
a.full = dfixed_const(16);
wm->priority_mark.full = dfixed_div(estimated_width, a);
wm->priority_mark.full = dfixed_ceil(wm->priority_mark);
wm->priority_mark.full = wm->priority_mark_max.full - wm->priority_mark.full;
}
}
void rs690_bandwidth_update(struct radeon_device *rdev)
{
struct drm_display_mode *mode0 = NULL;
struct drm_display_mode *mode1 = NULL;
struct rs690_watermark wm0;
struct rs690_watermark wm1;
u32 tmp;
u32 d1mode_priority_a_cnt = S_006548_D1MODE_PRIORITY_A_OFF(1);
u32 d2mode_priority_a_cnt = S_006548_D1MODE_PRIORITY_A_OFF(1);
fixed20_12 priority_mark02, priority_mark12, fill_rate;
fixed20_12 a, b;
radeon_update_display_priority(rdev);
if (rdev->mode_info.crtcs[0]->base.enabled)
mode0 = &rdev->mode_info.crtcs[0]->base.mode;
if (rdev->mode_info.crtcs[1]->base.enabled)
mode1 = &rdev->mode_info.crtcs[1]->base.mode;
/*
* Set display0/1 priority up in the memory controller for
* modes if the user specifies HIGH for displaypriority
* option.
*/
if ((rdev->disp_priority == 2) &&
((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740))) {
tmp = RREG32_MC(R_000104_MC_INIT_MISC_LAT_TIMER);
tmp &= C_000104_MC_DISP0R_INIT_LAT;
tmp &= C_000104_MC_DISP1R_INIT_LAT;
if (mode0)
tmp |= S_000104_MC_DISP0R_INIT_LAT(1);
if (mode1)
tmp |= S_000104_MC_DISP1R_INIT_LAT(1);
WREG32_MC(R_000104_MC_INIT_MISC_LAT_TIMER, tmp);
}
rs690_line_buffer_adjust(rdev, mode0, mode1);
if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740))
WREG32(R_006C9C_DCP_CONTROL, 0);
if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
WREG32(R_006C9C_DCP_CONTROL, 2);
rs690_crtc_bandwidth_compute(rdev, rdev->mode_info.crtcs[0], &wm0);
rs690_crtc_bandwidth_compute(rdev, rdev->mode_info.crtcs[1], &wm1);
tmp = (wm0.lb_request_fifo_depth - 1);
tmp |= (wm1.lb_request_fifo_depth - 1) << 16;
WREG32(R_006D58_LB_MAX_REQ_OUTSTANDING, tmp);
if (mode0 && mode1) {
if (dfixed_trunc(wm0.dbpp) > 64)
a.full = dfixed_mul(wm0.dbpp, wm0.num_line_pair);
else
a.full = wm0.num_line_pair.full;
if (dfixed_trunc(wm1.dbpp) > 64)
b.full = dfixed_mul(wm1.dbpp, wm1.num_line_pair);
else
b.full = wm1.num_line_pair.full;
a.full += b.full;
fill_rate.full = dfixed_div(wm0.sclk, a);
if (wm0.consumption_rate.full > fill_rate.full) {
b.full = wm0.consumption_rate.full - fill_rate.full;
b.full = dfixed_mul(b, wm0.active_time);
a.full = dfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
a.full = a.full + b.full;
b.full = dfixed_const(16 * 1000);
priority_mark02.full = dfixed_div(a, b);
} else {
a.full = dfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
b.full = dfixed_const(16 * 1000);
priority_mark02.full = dfixed_div(a, b);
}
if (wm1.consumption_rate.full > fill_rate.full) {
b.full = wm1.consumption_rate.full - fill_rate.full;
b.full = dfixed_mul(b, wm1.active_time);
a.full = dfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
a.full = a.full + b.full;
b.full = dfixed_const(16 * 1000);
priority_mark12.full = dfixed_div(a, b);
} else {
a.full = dfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
b.full = dfixed_const(16 * 1000);
priority_mark12.full = dfixed_div(a, b);
}
if (wm0.priority_mark.full > priority_mark02.full)
priority_mark02.full = wm0.priority_mark.full;
if (dfixed_trunc(priority_mark02) < 0)
priority_mark02.full = 0;
if (wm0.priority_mark_max.full > priority_mark02.full)
priority_mark02.full = wm0.priority_mark_max.full;
if (wm1.priority_mark.full > priority_mark12.full)
priority_mark12.full = wm1.priority_mark.full;
if (dfixed_trunc(priority_mark12) < 0)
priority_mark12.full = 0;
if (wm1.priority_mark_max.full > priority_mark12.full)
priority_mark12.full = wm1.priority_mark_max.full;
d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
d2mode_priority_a_cnt = dfixed_trunc(priority_mark12);
if (rdev->disp_priority == 2) {
d1mode_priority_a_cnt |= S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(1);
d2mode_priority_a_cnt |= S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(1);
}
} else if (mode0) {
if (dfixed_trunc(wm0.dbpp) > 64)
a.full = dfixed_mul(wm0.dbpp, wm0.num_line_pair);
else
a.full = wm0.num_line_pair.full;
fill_rate.full = dfixed_div(wm0.sclk, a);
if (wm0.consumption_rate.full > fill_rate.full) {
b.full = wm0.consumption_rate.full - fill_rate.full;
b.full = dfixed_mul(b, wm0.active_time);
a.full = dfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
a.full = a.full + b.full;
b.full = dfixed_const(16 * 1000);
priority_mark02.full = dfixed_div(a, b);
} else {
a.full = dfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
b.full = dfixed_const(16 * 1000);
priority_mark02.full = dfixed_div(a, b);
}
if (wm0.priority_mark.full > priority_mark02.full)
priority_mark02.full = wm0.priority_mark.full;
if (dfixed_trunc(priority_mark02) < 0)
priority_mark02.full = 0;
if (wm0.priority_mark_max.full > priority_mark02.full)
priority_mark02.full = wm0.priority_mark_max.full;
d1mode_priority_a_cnt = dfixed_trunc(priority_mark02);
if (rdev->disp_priority == 2)
d1mode_priority_a_cnt |= S_006548_D1MODE_PRIORITY_A_ALWAYS_ON(1);
} else if (mode1) {
if (dfixed_trunc(wm1.dbpp) > 64)
a.full = dfixed_mul(wm1.dbpp, wm1.num_line_pair);
else
a.full = wm1.num_line_pair.full;
fill_rate.full = dfixed_div(wm1.sclk, a);
if (wm1.consumption_rate.full > fill_rate.full) {
b.full = wm1.consumption_rate.full - fill_rate.full;
b.full = dfixed_mul(b, wm1.active_time);
a.full = dfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
a.full = a.full + b.full;
b.full = dfixed_const(16 * 1000);
priority_mark12.full = dfixed_div(a, b);
} else {
a.full = dfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
b.full = dfixed_const(16 * 1000);
priority_mark12.full = dfixed_div(a, b);
}
if (wm1.priority_mark.full > priority_mark12.full)
priority_mark12.full = wm1.priority_mark.full;
if (dfixed_trunc(priority_mark12) < 0)
priority_mark12.full = 0;
if (wm1.priority_mark_max.full > priority_mark12.full)
priority_mark12.full = wm1.priority_mark_max.full;
d2mode_priority_a_cnt = dfixed_trunc(priority_mark12);
if (rdev->disp_priority == 2)
d2mode_priority_a_cnt |= S_006D48_D2MODE_PRIORITY_A_ALWAYS_ON(1);
}
WREG32(R_006548_D1MODE_PRIORITY_A_CNT, d1mode_priority_a_cnt);
WREG32(R_00654C_D1MODE_PRIORITY_B_CNT, d1mode_priority_a_cnt);
WREG32(R_006D48_D2MODE_PRIORITY_A_CNT, d2mode_priority_a_cnt);
WREG32(R_006D4C_D2MODE_PRIORITY_B_CNT, d2mode_priority_a_cnt);
}
uint32_t rs690_mc_rreg(struct radeon_device *rdev, uint32_t reg)
{
uint32_t r;
WREG32(R_000078_MC_INDEX, S_000078_MC_IND_ADDR(reg));
r = RREG32(R_00007C_MC_DATA);
WREG32(R_000078_MC_INDEX, ~C_000078_MC_IND_ADDR);
return r;
}
void rs690_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
{
WREG32(R_000078_MC_INDEX, S_000078_MC_IND_ADDR(reg) |
S_000078_MC_IND_WR_EN(1));
WREG32(R_00007C_MC_DATA, v);
WREG32(R_000078_MC_INDEX, 0x7F);
}
static void rs690_mc_program(struct radeon_device *rdev)
{
struct rv515_mc_save save;
/* Stops all mc clients */
rv515_mc_stop(rdev, &save);
/* Wait for mc idle */
if (rs690_mc_wait_for_idle(rdev))
dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
/* Program MC, should be a 32bits limited address space */
WREG32_MC(R_000100_MCCFG_FB_LOCATION,
S_000100_MC_FB_START(rdev->mc.vram_start >> 16) |
S_000100_MC_FB_TOP(rdev->mc.vram_end >> 16));
WREG32(R_000134_HDP_FB_LOCATION,
S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));
rv515_mc_resume(rdev, &save);
}
static int rs690_startup(struct radeon_device *rdev)
{
int r;
rs690_mc_program(rdev);
/* Resume clock */
rv515_clock_startup(rdev);
/* Initialize GPU configuration (# pipes, ...) */
rs690_gpu_init(rdev);
/* Initialize GART (initialize after TTM so we can allocate
* memory through TTM but finalize after TTM) */
r = rs400_gart_enable(rdev);
if (r)
return r;
/* allocate wb buffer */
r = radeon_wb_init(rdev);
if (r)
return r;
r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
if (r) {
dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
return r;
}
/* Enable IRQ */
if (!rdev->irq.installed) {
r = radeon_irq_kms_init(rdev);
if (r)
return r;
}
rs600_irq_set(rdev);
rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
/* 1M ring buffer */
r = r100_cp_init(rdev, 1024 * 1024);
if (r) {
dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
return r;
}
r = radeon_ib_pool_init(rdev);
if (r) {
dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
return r;
}
r = r600_audio_init(rdev);
if (r) {
dev_err(rdev->dev, "failed initializing audio\n");
return r;
}
return 0;
}
int rs690_resume(struct radeon_device *rdev)
{
int r;
/* Make sur GART are not working */
rs400_gart_disable(rdev);
/* Resume clock before doing reset */
rv515_clock_startup(rdev);
/* Reset gpu before posting otherwise ATOM will enter infinite loop */
if (radeon_asic_reset(rdev)) {
dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
RREG32(R_000E40_RBBM_STATUS),
RREG32(R_0007C0_CP_STAT));
}
/* post */
atom_asic_init(rdev->mode_info.atom_context);
/* Resume clock after posting */
rv515_clock_startup(rdev);
/* Initialize surface registers */
radeon_surface_init(rdev);
rdev->accel_working = true;
r = rs690_startup(rdev);
if (r) {
rdev->accel_working = false;
}
return r;
}
int rs690_suspend(struct radeon_device *rdev)
{
r600_audio_fini(rdev);
r100_cp_disable(rdev);
radeon_wb_disable(rdev);
rs600_irq_disable(rdev);
rs400_gart_disable(rdev);
return 0;
}
void rs690_fini(struct radeon_device *rdev)
{
r600_audio_fini(rdev);
r100_cp_fini(rdev);
radeon_wb_fini(rdev);
radeon_ib_pool_fini(rdev);
radeon_gem_fini(rdev);
rs400_gart_fini(rdev);
radeon_irq_kms_fini(rdev);
radeon_fence_driver_fini(rdev);
radeon_bo_fini(rdev);
radeon_atombios_fini(rdev);
kfree(rdev->bios);
rdev->bios = NULL;
}
int rs690_init(struct radeon_device *rdev)
{
int r;
/* Disable VGA */
rv515_vga_render_disable(rdev);
/* Initialize scratch registers */
radeon_scratch_init(rdev);
/* Initialize surface registers */
radeon_surface_init(rdev);
/* restore some register to sane defaults */
r100_restore_sanity(rdev);
/* TODO: disable VGA need to use VGA request */
/* BIOS*/
if (!radeon_get_bios(rdev)) {
if (ASIC_IS_AVIVO(rdev))
return -EINVAL;
}
if (rdev->is_atom_bios) {
r = radeon_atombios_init(rdev);
if (r)
return r;
} else {
dev_err(rdev->dev, "Expecting atombios for RV515 GPU\n");
return -EINVAL;
}
/* Reset gpu before posting otherwise ATOM will enter infinite loop */
if (radeon_asic_reset(rdev)) {
dev_warn(rdev->dev,
"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
RREG32(R_000E40_RBBM_STATUS),
RREG32(R_0007C0_CP_STAT));
}
/* check if cards are posted or not */
if (radeon_boot_test_post_card(rdev) == false)
return -EINVAL;
/* Initialize clocks */
radeon_get_clock_info(rdev->ddev);
/* initialize memory controller */
rs690_mc_init(rdev);
rv515_debugfs(rdev);
/* Fence driver */
r = radeon_fence_driver_init(rdev);
if (r)
return r;
/* Memory manager */
r = radeon_bo_init(rdev);
if (r)
return r;
r = rs400_gart_init(rdev);
if (r)
return r;
rs600_set_safe_registers(rdev);
rdev->accel_working = true;
r = rs690_startup(rdev);
if (r) {
/* Somethings want wront with the accel init stop accel */
dev_err(rdev->dev, "Disabling GPU acceleration\n");
r100_cp_fini(rdev);
radeon_wb_fini(rdev);
radeon_ib_pool_fini(rdev);
rs400_gart_fini(rdev);
radeon_irq_kms_fini(rdev);
rdev->accel_working = false;
}
return 0;
}
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