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linux/drivers/gpu/drm/radeon/rs690.c
Jerome Glisse c93bb85b5c drm/radeon/kms: fix bandwidth computation on avivo hardware 
Fix bandwidth computation and crtc priority in memory controller
so that crtc memory request are fullfill in time to avoid display
artifact.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-07-29 15:45:09 +10:00

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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 "drmP.h"
#include "radeon_reg.h"
#include "radeon.h"
#include "rs690r.h"
#include "atom.h"
#include "atom-bits.h"
/* rs690,rs740 depends on : */
void r100_hdp_reset(struct radeon_device *rdev);
int r300_mc_wait_for_idle(struct radeon_device *rdev);
void r420_pipes_init(struct radeon_device *rdev);
void rs400_gart_disable(struct radeon_device *rdev);
int rs400_gart_enable(struct radeon_device *rdev);
void rs400_gart_adjust_size(struct radeon_device *rdev);
void rs600_mc_disable_clients(struct radeon_device *rdev);
void rs600_disable_vga(struct radeon_device *rdev);
/* This files gather functions specifics to :
* rs690,rs740
*
* Some of these functions might be used by newer ASICs.
*/
void rs690_gpu_init(struct radeon_device *rdev);
int rs690_mc_wait_for_idle(struct radeon_device *rdev);
/*
* MC functions.
*/
int rs690_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");
}
rs690_gpu_init(rdev);
rs400_gart_disable(rdev);
/* Setup GPU memory space */
rdev->mc.gtt_location = rdev->mc.vram_size;
rdev->mc.gtt_location += (rdev->mc.gtt_size - 1);
rdev->mc.gtt_location &= ~(rdev->mc.gtt_size - 1);
rdev->mc.vram_location = 0xFFFFFFFFUL;
r = radeon_mc_setup(rdev);
if (r) {
return r;
}
/* Program GPU memory space */
rs600_mc_disable_clients(rdev);
if (rs690_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.vram_size - 1;
tmp = REG_SET(RS690_MC_FB_TOP, tmp >> 16);
tmp |= REG_SET(RS690_MC_FB_START, rdev->mc.vram_location >> 16);
WREG32_MC(RS690_MCCFG_FB_LOCATION, tmp);
/* FIXME: Does this reg exist on RS480,RS740 ? */
WREG32(0x310, rdev->mc.vram_location);
WREG32(RS690_HDP_FB_LOCATION, rdev->mc.vram_location >> 16);
return 0;
}
void rs690_mc_fini(struct radeon_device *rdev)
{
rs400_gart_disable(rdev);
radeon_gart_table_ram_free(rdev);
radeon_gart_fini(rdev);
}
/*
* Global GPU functions
*/
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(RS690_MC_STATUS);
if (tmp & RS690_MC_STATUS_IDLE) {
return 0;
}
DRM_UDELAY(1);
}
return -1;
}
void rs690_errata(struct radeon_device *rdev)
{
rdev->pll_errata = 0;
}
void rs690_gpu_init(struct radeon_device *rdev)
{
/* FIXME: HDP same place on rs690 ? */
r100_hdp_reset(rdev);
rs600_disable_vga(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");
}
}
/*
* VRAM info.
*/
void rs690_pm_info(struct radeon_device *rdev)
{
int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
struct _ATOM_INTEGRATED_SYSTEM_INFO *info;
struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 *info_v2;
void *ptr;
uint16_t data_offset;
uint8_t frev, crev;
fixed20_12 tmp;
atom_parse_data_header(rdev->mode_info.atom_context, index, NULL,
&frev, &crev, &data_offset);
ptr = rdev->mode_info.atom_context->bios + data_offset;
info = (struct _ATOM_INTEGRATED_SYSTEM_INFO *)ptr;
info_v2 = (struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 *)ptr;
/* Get various system informations from bios */
switch (crev) {
case 1:
tmp.full = rfixed_const(100);
rdev->pm.igp_sideport_mclk.full = rfixed_const(info->ulBootUpMemoryClock);
rdev->pm.igp_sideport_mclk.full = rfixed_div(rdev->pm.igp_sideport_mclk, tmp);
rdev->pm.igp_system_mclk.full = rfixed_const(le16_to_cpu(info->usK8MemoryClock));
rdev->pm.igp_ht_link_clk.full = rfixed_const(le16_to_cpu(info->usFSBClock));
rdev->pm.igp_ht_link_width.full = rfixed_const(info->ucHTLinkWidth);
break;
case 2:
tmp.full = rfixed_const(100);
rdev->pm.igp_sideport_mclk.full = rfixed_const(info_v2->ulBootUpSidePortClock);
rdev->pm.igp_sideport_mclk.full = rfixed_div(rdev->pm.igp_sideport_mclk, tmp);
rdev->pm.igp_system_mclk.full = rfixed_const(info_v2->ulBootUpUMAClock);
rdev->pm.igp_system_mclk.full = rfixed_div(rdev->pm.igp_system_mclk, tmp);
rdev->pm.igp_ht_link_clk.full = rfixed_const(info_v2->ulHTLinkFreq);
rdev->pm.igp_ht_link_clk.full = rfixed_div(rdev->pm.igp_ht_link_clk, tmp);
rdev->pm.igp_ht_link_width.full = rfixed_const(le16_to_cpu(info_v2->usMinHTLinkWidth));
break;
default:
tmp.full = rfixed_const(100);
/* We assume the slower possible clock ie worst case */
/* DDR 333Mhz */
rdev->pm.igp_sideport_mclk.full = rfixed_const(333);
/* FIXME: system clock ? */
rdev->pm.igp_system_mclk.full = rfixed_const(100);
rdev->pm.igp_system_mclk.full = rfixed_div(rdev->pm.igp_system_mclk, tmp);
rdev->pm.igp_ht_link_clk.full = rfixed_const(200);
rdev->pm.igp_ht_link_width.full = rfixed_const(8);
DRM_ERROR("No integrated system info for your GPU, using safe default\n");
break;
}
/* Compute various bandwidth */
/* k8_bandwidth = (memory_clk / 2) * 2 * 8 * 0.5 = memory_clk * 4 */
tmp.full = rfixed_const(4);
rdev->pm.k8_bandwidth.full = rfixed_mul(rdev->pm.igp_system_mclk, tmp);
/* ht_bandwidth = ht_clk * 2 * ht_width / 8 * 0.8
* = ht_clk * ht_width / 5
*/
tmp.full = rfixed_const(5);
rdev->pm.ht_bandwidth.full = rfixed_mul(rdev->pm.igp_ht_link_clk,
rdev->pm.igp_ht_link_width);
rdev->pm.ht_bandwidth.full = rfixed_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 = rfixed_const(14);
rdev->pm.sideport_bandwidth.full = rfixed_mul(rdev->pm.igp_sideport_mclk, tmp);
tmp.full = rfixed_const(10);
rdev->pm.sideport_bandwidth.full = rfixed_div(rdev->pm.sideport_bandwidth, tmp);
}
void rs690_vram_info(struct radeon_device *rdev)
{
uint32_t tmp;
fixed20_12 a;
rs400_gart_adjust_size(rdev);
/* DDR for all card after R300 & IGP */
rdev->mc.vram_is_ddr = true;
/* FIXME: is this correct for RS690/RS740 ? */
tmp = RREG32(RADEON_MEM_CNTL);
if (tmp & R300_MEM_NUM_CHANNELS_MASK) {
rdev->mc.vram_width = 128;
} else {
rdev->mc.vram_width = 64;
}
rdev->mc.vram_size = RREG32(RADEON_CONFIG_MEMSIZE);
rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
rs690_pm_info(rdev);
/* FIXME: we should enforce default clock in case GPU is not in
* default setup
*/
a.full = rfixed_const(100);
rdev->pm.sclk.full = rfixed_const(rdev->clock.default_sclk);
rdev->pm.sclk.full = rfixed_div(rdev->pm.sclk, a);
a.full = rfixed_const(16);
/* core_bandwidth = sclk(Mhz) * 16 */
rdev->pm.core_bandwidth.full = rfixed_div(rdev->pm.sclk, a);
}
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.
* 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 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(DC_LB_MEMORY_SPLIT) & ~DC_LB_MEMORY_SPLIT_MASK;
tmp &= ~DC_LB_MEMORY_SPLIT_SHIFT_MODE;
/* auto */
if (mode1 && mode2) {
if (mode1->hdisplay > mode2->hdisplay) {
if (mode1->hdisplay > 2560)
tmp |= DC_LB_MEMORY_SPLIT_D1_3Q_D2_1Q;
else
tmp |= DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
} else if (mode2->hdisplay > mode1->hdisplay) {
if (mode2->hdisplay > 2560)
tmp |= DC_LB_MEMORY_SPLIT_D1_1Q_D2_3Q;
else
tmp |= DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
} else
tmp |= AVIVO_DC_LB_MEMORY_SPLIT_D1HALF_D2HALF;
} else if (mode1) {
tmp |= DC_LB_MEMORY_SPLIT_D1_ONLY;
} else if (mode2) {
tmp |= DC_LB_MEMORY_SPLIT_D1_1Q_D2_3Q;
}
WREG32(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;
};
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;
/* FIXME: detect IGP with sideport memory, i don't think there is any
* such product available
*/
bool sideport = false;
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 > rfixed_const(2))
wm->num_line_pair.full = rfixed_const(2);
else
wm->num_line_pair.full = rfixed_const(1);
b.full = rfixed_const(mode->crtc_hdisplay);
c.full = rfixed_const(256);
a.full = rfixed_mul(wm->num_line_pair, b);
request_fifo_depth.full = rfixed_div(a, c);
if (a.full < rfixed_const(4)) {
wm->lb_request_fifo_depth = 4;
} else {
wm->lb_request_fifo_depth = rfixed_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 = rfixed_const(mode->clock);
b.full = rfixed_const(1000);
a.full = rfixed_div(a, b);
pclk.full = rfixed_div(b, a);
if (crtc->rmx_type != RMX_OFF) {
b.full = rfixed_const(2);
if (crtc->vsc.full > b.full)
b.full = crtc->vsc.full;
b.full = rfixed_mul(b, crtc->hsc);
c.full = rfixed_const(2);
b.full = rfixed_div(b, c);
consumption_time.full = rfixed_div(pclk, b);
} else {
consumption_time.full = pclk.full;
}
a.full = rfixed_const(1);
wm->consumption_rate.full = rfixed_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 = rfixed_const(crtc->base.mode.crtc_htotal);
line_time.full = rfixed_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 = rfixed_const(crtc->base.mode.crtc_htotal);
b.full = rfixed_const(crtc->base.mode.crtc_hdisplay);
wm->active_time.full = rfixed_mul(line_time, b);
wm->active_time.full = rfixed_div(wm->active_time, a);
/* Maximun bandwidth is the minimun bandwidth of all component */
rdev->pm.max_bandwidth = rdev->pm.core_bandwidth;
if (sideport) {
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 = rfixed_const(370 * 800 * 1000);
read_delay_latency.full = rfixed_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 = rfixed_const(5000);
}
/* sclk = system clocks(ns) = 1000 / max_bandwidth / 16 */
a.full = rfixed_const(16);
rdev->pm.sclk.full = rfixed_mul(rdev->pm.max_bandwidth, a);
a.full = rfixed_const(1000);
rdev->pm.sclk.full = rfixed_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 = rfixed_const(256 * 13);
chunk_time.full = rfixed_mul(rdev->pm.sclk, a);
a.full = rfixed_const(10);
chunk_time.full = rfixed_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 (rfixed_trunc(wm->num_line_pair) > 1) {
a.full = rfixed_const(3);
wm->worst_case_latency.full = rfixed_mul(a, chunk_time);
wm->worst_case_latency.full += read_delay_latency.full;
} else {
a.full = rfixed_const(2);
wm->worst_case_latency.full = rfixed_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) >= rfixed_trunc(request_fifo_depth)) {
tolerable_latency.full = line_time.full;
} else {
tolerable_latency.full = rfixed_const(wm->lb_request_fifo_depth - 2);
tolerable_latency.full = request_fifo_depth.full - tolerable_latency.full;
tolerable_latency.full = rfixed_mul(tolerable_latency, chunk_time);
tolerable_latency.full = line_time.full - tolerable_latency.full;
}
/* We assume worst case 32bits (4 bytes) */
wm->dbpp.full = rfixed_const(4 * 8);
/* Determine the maximum priority mark
* width = viewport width in pixels
*/
a.full = rfixed_const(16);
wm->priority_mark_max.full = rfixed_const(crtc->base.mode.crtc_hdisplay);
wm->priority_mark_max.full = rfixed_div(wm->priority_mark_max, a);
/* Determine estimated width */
estimated_width.full = tolerable_latency.full - wm->worst_case_latency.full;
estimated_width.full = rfixed_div(estimated_width, consumption_time);
if (rfixed_trunc(estimated_width) > crtc->base.mode.crtc_hdisplay) {
wm->priority_mark.full = rfixed_const(10);
} else {
a.full = rfixed_const(16);
wm->priority_mark.full = rfixed_div(estimated_width, a);
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;
fixed20_12 priority_mark02, priority_mark12, fill_rate;
fixed20_12 a, b;
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) {
tmp = RREG32_MC(MC_INIT_MISC_LAT_TIMER);
tmp &= ~MC_DISP1R_INIT_LAT_MASK;
tmp &= ~MC_DISP0R_INIT_LAT_MASK;
if (mode1)
tmp |= (1 << MC_DISP1R_INIT_LAT_SHIFT);
if (mode0)
tmp |= (1 << MC_DISP0R_INIT_LAT_SHIFT);
WREG32_MC(MC_INIT_MISC_LAT_TIMER, tmp);
}
rs690_line_buffer_adjust(rdev, mode0, mode1);
if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740))
WREG32(DCP_CONTROL, 0);
if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
WREG32(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(LB_MAX_REQ_OUTSTANDING, tmp);
if (mode0 && mode1) {
if (rfixed_trunc(wm0.dbpp) > 64)
a.full = rfixed_mul(wm0.dbpp, wm0.num_line_pair);
else
a.full = wm0.num_line_pair.full;
if (rfixed_trunc(wm1.dbpp) > 64)
b.full = rfixed_mul(wm1.dbpp, wm1.num_line_pair);
else
b.full = wm1.num_line_pair.full;
a.full += b.full;
fill_rate.full = rfixed_div(wm0.sclk, a);
if (wm0.consumption_rate.full > fill_rate.full) {
b.full = wm0.consumption_rate.full - fill_rate.full;
b.full = rfixed_mul(b, wm0.active_time);
a.full = rfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
a.full = a.full + b.full;
b.full = rfixed_const(16 * 1000);
priority_mark02.full = rfixed_div(a, b);
} else {
a.full = rfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
b.full = rfixed_const(16 * 1000);
priority_mark02.full = rfixed_div(a, b);
}
if (wm1.consumption_rate.full > fill_rate.full) {
b.full = wm1.consumption_rate.full - fill_rate.full;
b.full = rfixed_mul(b, wm1.active_time);
a.full = rfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
a.full = a.full + b.full;
b.full = rfixed_const(16 * 1000);
priority_mark12.full = rfixed_div(a, b);
} else {
a.full = rfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
b.full = rfixed_const(16 * 1000);
priority_mark12.full = rfixed_div(a, b);
}
if (wm0.priority_mark.full > priority_mark02.full)
priority_mark02.full = wm0.priority_mark.full;
if (rfixed_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 (rfixed_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;
WREG32(D1MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark02));
WREG32(D1MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark02));
WREG32(D2MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark12));
WREG32(D2MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark12));
} else if (mode0) {
if (rfixed_trunc(wm0.dbpp) > 64)
a.full = rfixed_mul(wm0.dbpp, wm0.num_line_pair);
else
a.full = wm0.num_line_pair.full;
fill_rate.full = rfixed_div(wm0.sclk, a);
if (wm0.consumption_rate.full > fill_rate.full) {
b.full = wm0.consumption_rate.full - fill_rate.full;
b.full = rfixed_mul(b, wm0.active_time);
a.full = rfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
a.full = a.full + b.full;
b.full = rfixed_const(16 * 1000);
priority_mark02.full = rfixed_div(a, b);
} else {
a.full = rfixed_mul(wm0.worst_case_latency,
wm0.consumption_rate);
b.full = rfixed_const(16 * 1000);
priority_mark02.full = rfixed_div(a, b);
}
if (wm0.priority_mark.full > priority_mark02.full)
priority_mark02.full = wm0.priority_mark.full;
if (rfixed_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;
WREG32(D1MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark02));
WREG32(D1MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark02));
WREG32(D2MODE_PRIORITY_A_CNT, MODE_PRIORITY_OFF);
WREG32(D2MODE_PRIORITY_B_CNT, MODE_PRIORITY_OFF);
} else {
if (rfixed_trunc(wm1.dbpp) > 64)
a.full = rfixed_mul(wm1.dbpp, wm1.num_line_pair);
else
a.full = wm1.num_line_pair.full;
fill_rate.full = rfixed_div(wm1.sclk, a);
if (wm1.consumption_rate.full > fill_rate.full) {
b.full = wm1.consumption_rate.full - fill_rate.full;
b.full = rfixed_mul(b, wm1.active_time);
a.full = rfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
a.full = a.full + b.full;
b.full = rfixed_const(16 * 1000);
priority_mark12.full = rfixed_div(a, b);
} else {
a.full = rfixed_mul(wm1.worst_case_latency,
wm1.consumption_rate);
b.full = rfixed_const(16 * 1000);
priority_mark12.full = rfixed_div(a, b);
}
if (wm1.priority_mark.full > priority_mark12.full)
priority_mark12.full = wm1.priority_mark.full;
if (rfixed_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;
WREG32(D1MODE_PRIORITY_A_CNT, MODE_PRIORITY_OFF);
WREG32(D1MODE_PRIORITY_B_CNT, MODE_PRIORITY_OFF);
WREG32(D2MODE_PRIORITY_A_CNT, rfixed_trunc(priority_mark12));
WREG32(D2MODE_PRIORITY_B_CNT, rfixed_trunc(priority_mark12));
}
}
/*
* Indirect registers accessor
*/
uint32_t rs690_mc_rreg(struct radeon_device *rdev, uint32_t reg)
{
uint32_t r;
WREG32(RS690_MC_INDEX, (reg & RS690_MC_INDEX_MASK));
r = RREG32(RS690_MC_DATA);
WREG32(RS690_MC_INDEX, RS690_MC_INDEX_MASK);
return r;
}
void rs690_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
{
WREG32(RS690_MC_INDEX,
RS690_MC_INDEX_WR_EN | ((reg) & RS690_MC_INDEX_MASK));
WREG32(RS690_MC_DATA, v);
WREG32(RS690_MC_INDEX, RS690_MC_INDEX_WR_ACK);
}
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