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kernel/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
tqcq e5480701d3 init repo.
2024-07-22 17:22:30 +08:00

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/*
* Copyright 2016 Advanced Micro Devices, Inc.
*
* 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: AMD
*
*/
#include <linux/delay.h>
#include "dm_services.h"
#include "dcn10_hubp.h"
#include "dcn10_hubbub.h"
#include "reg_helper.h"
#define CTX \
hubbub1->base.ctx
#define DC_LOGGER \
hubbub1->base.ctx->logger
#define REG(reg)\
hubbub1->regs->reg
#undef FN
#define FN(reg_name, field_name) \
hubbub1->shifts->field_name, hubbub1->masks->field_name
void hubbub1_wm_read_state(struct hubbub *hubbub,
struct dcn_hubbub_wm *wm)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
struct dcn_hubbub_wm_set *s;
memset(wm, 0, sizeof(struct dcn_hubbub_wm));
s = &wm->sets[0];
s->wm_set = 0;
s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A);
s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_A);
if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A)) {
s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A);
s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_A);
}
s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_A);
s = &wm->sets[1];
s->wm_set = 1;
s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B);
s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_B);
if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B)) {
s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B);
s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_B);
}
s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_B);
s = &wm->sets[2];
s->wm_set = 2;
s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C);
s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_C);
if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C)) {
s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C);
s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_C);
}
s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_C);
s = &wm->sets[3];
s->wm_set = 3;
s->data_urgent = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_D);
s->pte_meta_urgent = REG_READ(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_D);
if (REG(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D)) {
s->sr_enter = REG_READ(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D);
s->sr_exit = REG_READ(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_D);
}
s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D);
}
void hubbub1_allow_self_refresh_control(struct hubbub *hubbub, bool allow)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
/*
* DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE = 1 means do not allow stutter
* DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE = 0 means allow stutter
*/
REG_UPDATE_2(DCHUBBUB_ARB_DRAM_STATE_CNTL,
DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_VALUE, 0,
DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, !allow);
}
bool hubbub1_is_allow_self_refresh_enabled(struct hubbub *hubbub)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
uint32_t enable = 0;
REG_GET(DCHUBBUB_ARB_DRAM_STATE_CNTL,
DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, &enable);
return enable ? true : false;
}
bool hubbub1_verify_allow_pstate_change_high(
struct hubbub *hubbub)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
/* pstate latency is ~20us so if we wait over 40us and pstate allow
* still not asserted, we are probably stuck and going to hang
*
* TODO: Figure out why it takes ~100us on linux
* pstate takes around ~100us (up to 200us) on linux. Unknown currently
* as to why it takes that long on linux
*/
const unsigned int pstate_wait_timeout_us = 200;
const unsigned int pstate_wait_expected_timeout_us = 180;
static unsigned int max_sampled_pstate_wait_us; /* data collection */
static bool forced_pstate_allow; /* help with revert wa */
unsigned int debug_data;
unsigned int i;
if (forced_pstate_allow) {
/* we hacked to force pstate allow to prevent hang last time
* we verify_allow_pstate_change_high. so disable force
* here so we can check status
*/
REG_UPDATE_2(DCHUBBUB_ARB_DRAM_STATE_CNTL,
DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_VALUE, 0,
DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_ENABLE, 0);
forced_pstate_allow = false;
}
/* The following table only applies to DCN1 and DCN2,
* for newer DCNs, need to consult with HW IP folks to read RTL
* HUBBUB:DCHUBBUB_TEST_ARB_DEBUG10 DCHUBBUBDEBUGIND:0xB
* description
* 0: Pipe0 Plane0 Allow Pstate Change
* 1: Pipe0 Plane1 Allow Pstate Change
* 2: Pipe0 Cursor0 Allow Pstate Change
* 3: Pipe0 Cursor1 Allow Pstate Change
* 4: Pipe1 Plane0 Allow Pstate Change
* 5: Pipe1 Plane1 Allow Pstate Change
* 6: Pipe1 Cursor0 Allow Pstate Change
* 7: Pipe1 Cursor1 Allow Pstate Change
* 8: Pipe2 Plane0 Allow Pstate Change
* 9: Pipe2 Plane1 Allow Pstate Change
* 10: Pipe2 Cursor0 Allow Pstate Change
* 11: Pipe2 Cursor1 Allow Pstate Change
* 12: Pipe3 Plane0 Allow Pstate Change
* 13: Pipe3 Plane1 Allow Pstate Change
* 14: Pipe3 Cursor0 Allow Pstate Change
* 15: Pipe3 Cursor1 Allow Pstate Change
* 16: Pipe4 Plane0 Allow Pstate Change
* 17: Pipe4 Plane1 Allow Pstate Change
* 18: Pipe4 Cursor0 Allow Pstate Change
* 19: Pipe4 Cursor1 Allow Pstate Change
* 20: Pipe5 Plane0 Allow Pstate Change
* 21: Pipe5 Plane1 Allow Pstate Change
* 22: Pipe5 Cursor0 Allow Pstate Change
* 23: Pipe5 Cursor1 Allow Pstate Change
* 24: Pipe6 Plane0 Allow Pstate Change
* 25: Pipe6 Plane1 Allow Pstate Change
* 26: Pipe6 Cursor0 Allow Pstate Change
* 27: Pipe6 Cursor1 Allow Pstate Change
* 28: WB0 Allow Pstate Change
* 29: WB1 Allow Pstate Change
* 30: Arbiter's allow_pstate_change
* 31: SOC pstate change request
*/
REG_WRITE(DCHUBBUB_TEST_DEBUG_INDEX, hubbub1->debug_test_index_pstate);
for (i = 0; i < pstate_wait_timeout_us; i++) {
debug_data = REG_READ(DCHUBBUB_TEST_DEBUG_DATA);
if (debug_data & (1 << 30)) {
if (i > pstate_wait_expected_timeout_us)
DC_LOG_WARNING("pstate took longer than expected ~%dus\n",
i);
return true;
}
if (max_sampled_pstate_wait_us < i)
max_sampled_pstate_wait_us = i;
udelay(1);
}
/* force pstate allow to prevent system hang
* and break to debugger to investigate
*/
REG_UPDATE_2(DCHUBBUB_ARB_DRAM_STATE_CNTL,
DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_VALUE, 1,
DCHUBBUB_ARB_ALLOW_PSTATE_CHANGE_FORCE_ENABLE, 1);
forced_pstate_allow = true;
DC_LOG_WARNING("pstate TEST_DEBUG_DATA: 0x%X\n",
debug_data);
return false;
}
static uint32_t convert_and_clamp(
uint32_t wm_ns,
uint32_t refclk_mhz,
uint32_t clamp_value)
{
uint32_t ret_val = 0;
ret_val = wm_ns * refclk_mhz;
ret_val /= 1000;
if (ret_val > clamp_value)
ret_val = clamp_value;
return ret_val;
}
void hubbub1_wm_change_req_wa(struct hubbub *hubbub)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
REG_UPDATE_SEQ_2(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 0,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
}
bool hubbub1_program_urgent_watermarks(
struct hubbub *hubbub,
struct dcn_watermark_set *watermarks,
unsigned int refclk_mhz,
bool safe_to_lower)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
uint32_t prog_wm_value;
bool wm_pending = false;
/* Repeat for water mark set A, B, C and D. */
/* clock state A */
if (safe_to_lower || watermarks->a.urgent_ns > hubbub1->watermarks.a.urgent_ns) {
hubbub1->watermarks.a.urgent_ns = watermarks->a.urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->a.urgent_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, 0,
DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("URGENCY_WATERMARK_A calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->a.urgent_ns, prog_wm_value);
} else if (watermarks->a.urgent_ns < hubbub1->watermarks.a.urgent_ns)
wm_pending = true;
if (safe_to_lower || watermarks->a.pte_meta_urgent_ns > hubbub1->watermarks.a.pte_meta_urgent_ns) {
hubbub1->watermarks.a.pte_meta_urgent_ns = watermarks->a.pte_meta_urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->a.pte_meta_urgent_ns,
refclk_mhz, 0x1fffff);
REG_WRITE(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_A, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("PTE_META_URGENCY_WATERMARK_A calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->a.pte_meta_urgent_ns, prog_wm_value);
} else if (watermarks->a.pte_meta_urgent_ns < hubbub1->watermarks.a.pte_meta_urgent_ns)
wm_pending = true;
/* clock state B */
if (safe_to_lower || watermarks->b.urgent_ns > hubbub1->watermarks.b.urgent_ns) {
hubbub1->watermarks.b.urgent_ns = watermarks->b.urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->b.urgent_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B, 0,
DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_B, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("URGENCY_WATERMARK_B calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->b.urgent_ns, prog_wm_value);
} else if (watermarks->b.urgent_ns < hubbub1->watermarks.b.urgent_ns)
wm_pending = true;
if (safe_to_lower || watermarks->b.pte_meta_urgent_ns > hubbub1->watermarks.b.pte_meta_urgent_ns) {
hubbub1->watermarks.b.pte_meta_urgent_ns = watermarks->b.pte_meta_urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->b.pte_meta_urgent_ns,
refclk_mhz, 0x1fffff);
REG_WRITE(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_B, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("PTE_META_URGENCY_WATERMARK_B calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->b.pte_meta_urgent_ns, prog_wm_value);
} else if (watermarks->b.pte_meta_urgent_ns < hubbub1->watermarks.b.pte_meta_urgent_ns)
wm_pending = true;
/* clock state C */
if (safe_to_lower || watermarks->c.urgent_ns > hubbub1->watermarks.c.urgent_ns) {
hubbub1->watermarks.c.urgent_ns = watermarks->c.urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->c.urgent_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C, 0,
DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_C, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("URGENCY_WATERMARK_C calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->c.urgent_ns, prog_wm_value);
} else if (watermarks->c.urgent_ns < hubbub1->watermarks.c.urgent_ns)
wm_pending = true;
if (safe_to_lower || watermarks->c.pte_meta_urgent_ns > hubbub1->watermarks.c.pte_meta_urgent_ns) {
hubbub1->watermarks.c.pte_meta_urgent_ns = watermarks->c.pte_meta_urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->c.pte_meta_urgent_ns,
refclk_mhz, 0x1fffff);
REG_WRITE(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_C, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("PTE_META_URGENCY_WATERMARK_C calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->c.pte_meta_urgent_ns, prog_wm_value);
} else if (watermarks->c.pte_meta_urgent_ns < hubbub1->watermarks.c.pte_meta_urgent_ns)
wm_pending = true;
/* clock state D */
if (safe_to_lower || watermarks->d.urgent_ns > hubbub1->watermarks.d.urgent_ns) {
hubbub1->watermarks.d.urgent_ns = watermarks->d.urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->d.urgent_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_D, 0,
DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_D, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("URGENCY_WATERMARK_D calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->d.urgent_ns, prog_wm_value);
} else if (watermarks->d.urgent_ns < hubbub1->watermarks.d.urgent_ns)
wm_pending = true;
if (safe_to_lower || watermarks->d.pte_meta_urgent_ns > hubbub1->watermarks.d.pte_meta_urgent_ns) {
hubbub1->watermarks.d.pte_meta_urgent_ns = watermarks->d.pte_meta_urgent_ns;
prog_wm_value = convert_and_clamp(watermarks->d.pte_meta_urgent_ns,
refclk_mhz, 0x1fffff);
REG_WRITE(DCHUBBUB_ARB_PTE_META_URGENCY_WATERMARK_D, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("PTE_META_URGENCY_WATERMARK_D calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->d.pte_meta_urgent_ns, prog_wm_value);
} else if (watermarks->d.pte_meta_urgent_ns < hubbub1->watermarks.d.pte_meta_urgent_ns)
wm_pending = true;
return wm_pending;
}
bool hubbub1_program_stutter_watermarks(
struct hubbub *hubbub,
struct dcn_watermark_set *watermarks,
unsigned int refclk_mhz,
bool safe_to_lower)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
uint32_t prog_wm_value;
bool wm_pending = false;
/* clock state A */
if (safe_to_lower || watermarks->a.cstate_pstate.cstate_enter_plus_exit_ns
> hubbub1->watermarks.a.cstate_pstate.cstate_enter_plus_exit_ns) {
hubbub1->watermarks.a.cstate_pstate.cstate_enter_plus_exit_ns =
watermarks->a.cstate_pstate.cstate_enter_plus_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->a.cstate_pstate.cstate_enter_plus_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A, 0,
DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_ENTER_EXIT_WATERMARK_A calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->a.cstate_pstate.cstate_enter_plus_exit_ns, prog_wm_value);
} else if (watermarks->a.cstate_pstate.cstate_enter_plus_exit_ns
< hubbub1->watermarks.a.cstate_pstate.cstate_enter_plus_exit_ns)
wm_pending = true;
if (safe_to_lower || watermarks->a.cstate_pstate.cstate_exit_ns
> hubbub1->watermarks.a.cstate_pstate.cstate_exit_ns) {
hubbub1->watermarks.a.cstate_pstate.cstate_exit_ns =
watermarks->a.cstate_pstate.cstate_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->a.cstate_pstate.cstate_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_A, 0,
DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_A, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_EXIT_WATERMARK_A calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->a.cstate_pstate.cstate_exit_ns, prog_wm_value);
} else if (watermarks->a.cstate_pstate.cstate_exit_ns
< hubbub1->watermarks.a.cstate_pstate.cstate_exit_ns)
wm_pending = true;
/* clock state B */
if (safe_to_lower || watermarks->b.cstate_pstate.cstate_enter_plus_exit_ns
> hubbub1->watermarks.b.cstate_pstate.cstate_enter_plus_exit_ns) {
hubbub1->watermarks.b.cstate_pstate.cstate_enter_plus_exit_ns =
watermarks->b.cstate_pstate.cstate_enter_plus_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->b.cstate_pstate.cstate_enter_plus_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B, 0,
DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_B, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_ENTER_EXIT_WATERMARK_B calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->b.cstate_pstate.cstate_enter_plus_exit_ns, prog_wm_value);
} else if (watermarks->b.cstate_pstate.cstate_enter_plus_exit_ns
< hubbub1->watermarks.b.cstate_pstate.cstate_enter_plus_exit_ns)
wm_pending = true;
if (safe_to_lower || watermarks->b.cstate_pstate.cstate_exit_ns
> hubbub1->watermarks.b.cstate_pstate.cstate_exit_ns) {
hubbub1->watermarks.b.cstate_pstate.cstate_exit_ns =
watermarks->b.cstate_pstate.cstate_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->b.cstate_pstate.cstate_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_B, 0,
DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_B, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_EXIT_WATERMARK_B calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->b.cstate_pstate.cstate_exit_ns, prog_wm_value);
} else if (watermarks->b.cstate_pstate.cstate_exit_ns
< hubbub1->watermarks.b.cstate_pstate.cstate_exit_ns)
wm_pending = true;
/* clock state C */
if (safe_to_lower || watermarks->c.cstate_pstate.cstate_enter_plus_exit_ns
> hubbub1->watermarks.c.cstate_pstate.cstate_enter_plus_exit_ns) {
hubbub1->watermarks.c.cstate_pstate.cstate_enter_plus_exit_ns =
watermarks->c.cstate_pstate.cstate_enter_plus_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->c.cstate_pstate.cstate_enter_plus_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C, 0,
DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_C, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_ENTER_EXIT_WATERMARK_C calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->c.cstate_pstate.cstate_enter_plus_exit_ns, prog_wm_value);
} else if (watermarks->c.cstate_pstate.cstate_enter_plus_exit_ns
< hubbub1->watermarks.c.cstate_pstate.cstate_enter_plus_exit_ns)
wm_pending = true;
if (safe_to_lower || watermarks->c.cstate_pstate.cstate_exit_ns
> hubbub1->watermarks.c.cstate_pstate.cstate_exit_ns) {
hubbub1->watermarks.c.cstate_pstate.cstate_exit_ns =
watermarks->c.cstate_pstate.cstate_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->c.cstate_pstate.cstate_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_C, 0,
DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_C, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_EXIT_WATERMARK_C calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->c.cstate_pstate.cstate_exit_ns, prog_wm_value);
} else if (watermarks->c.cstate_pstate.cstate_exit_ns
< hubbub1->watermarks.c.cstate_pstate.cstate_exit_ns)
wm_pending = true;
/* clock state D */
if (safe_to_lower || watermarks->d.cstate_pstate.cstate_enter_plus_exit_ns
> hubbub1->watermarks.d.cstate_pstate.cstate_enter_plus_exit_ns) {
hubbub1->watermarks.d.cstate_pstate.cstate_enter_plus_exit_ns =
watermarks->d.cstate_pstate.cstate_enter_plus_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->d.cstate_pstate.cstate_enter_plus_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D, 0,
DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_D, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_ENTER_EXIT_WATERMARK_D calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->d.cstate_pstate.cstate_enter_plus_exit_ns, prog_wm_value);
} else if (watermarks->d.cstate_pstate.cstate_enter_plus_exit_ns
< hubbub1->watermarks.d.cstate_pstate.cstate_enter_plus_exit_ns)
wm_pending = true;
if (safe_to_lower || watermarks->d.cstate_pstate.cstate_exit_ns
> hubbub1->watermarks.d.cstate_pstate.cstate_exit_ns) {
hubbub1->watermarks.d.cstate_pstate.cstate_exit_ns =
watermarks->d.cstate_pstate.cstate_exit_ns;
prog_wm_value = convert_and_clamp(
watermarks->d.cstate_pstate.cstate_exit_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_D, 0,
DCHUBBUB_ARB_ALLOW_SR_EXIT_WATERMARK_D, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("SR_EXIT_WATERMARK_D calculated =%d\n"
"HW register value = 0x%x\n",
watermarks->d.cstate_pstate.cstate_exit_ns, prog_wm_value);
} else if (watermarks->d.cstate_pstate.cstate_exit_ns
< hubbub1->watermarks.d.cstate_pstate.cstate_exit_ns)
wm_pending = true;
return wm_pending;
}
bool hubbub1_program_pstate_watermarks(
struct hubbub *hubbub,
struct dcn_watermark_set *watermarks,
unsigned int refclk_mhz,
bool safe_to_lower)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
uint32_t prog_wm_value;
bool wm_pending = false;
/* clock state A */
if (safe_to_lower || watermarks->a.cstate_pstate.pstate_change_ns
> hubbub1->watermarks.a.cstate_pstate.pstate_change_ns) {
hubbub1->watermarks.a.cstate_pstate.pstate_change_ns =
watermarks->a.cstate_pstate.pstate_change_ns;
prog_wm_value = convert_and_clamp(
watermarks->a.cstate_pstate.pstate_change_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_A, 0,
DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_A, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("DRAM_CLK_CHANGE_WATERMARK_A calculated =%d\n"
"HW register value = 0x%x\n\n",
watermarks->a.cstate_pstate.pstate_change_ns, prog_wm_value);
} else if (watermarks->a.cstate_pstate.pstate_change_ns
< hubbub1->watermarks.a.cstate_pstate.pstate_change_ns)
wm_pending = true;
/* clock state B */
if (safe_to_lower || watermarks->b.cstate_pstate.pstate_change_ns
> hubbub1->watermarks.b.cstate_pstate.pstate_change_ns) {
hubbub1->watermarks.b.cstate_pstate.pstate_change_ns =
watermarks->b.cstate_pstate.pstate_change_ns;
prog_wm_value = convert_and_clamp(
watermarks->b.cstate_pstate.pstate_change_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_B, 0,
DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_B, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("DRAM_CLK_CHANGE_WATERMARK_B calculated =%d\n"
"HW register value = 0x%x\n\n",
watermarks->b.cstate_pstate.pstate_change_ns, prog_wm_value);
} else if (watermarks->b.cstate_pstate.pstate_change_ns
< hubbub1->watermarks.b.cstate_pstate.pstate_change_ns)
wm_pending = true;
/* clock state C */
if (safe_to_lower || watermarks->c.cstate_pstate.pstate_change_ns
> hubbub1->watermarks.c.cstate_pstate.pstate_change_ns) {
hubbub1->watermarks.c.cstate_pstate.pstate_change_ns =
watermarks->c.cstate_pstate.pstate_change_ns;
prog_wm_value = convert_and_clamp(
watermarks->c.cstate_pstate.pstate_change_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_C, 0,
DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_C, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("DRAM_CLK_CHANGE_WATERMARK_C calculated =%d\n"
"HW register value = 0x%x\n\n",
watermarks->c.cstate_pstate.pstate_change_ns, prog_wm_value);
} else if (watermarks->c.cstate_pstate.pstate_change_ns
< hubbub1->watermarks.c.cstate_pstate.pstate_change_ns)
wm_pending = true;
/* clock state D */
if (safe_to_lower || watermarks->d.cstate_pstate.pstate_change_ns
> hubbub1->watermarks.d.cstate_pstate.pstate_change_ns) {
hubbub1->watermarks.d.cstate_pstate.pstate_change_ns =
watermarks->d.cstate_pstate.pstate_change_ns;
prog_wm_value = convert_and_clamp(
watermarks->d.cstate_pstate.pstate_change_ns,
refclk_mhz, 0x1fffff);
REG_SET(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D, 0,
DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D, prog_wm_value);
DC_LOG_BANDWIDTH_CALCS("DRAM_CLK_CHANGE_WATERMARK_D calculated =%d\n"
"HW register value = 0x%x\n\n",
watermarks->d.cstate_pstate.pstate_change_ns, prog_wm_value);
} else if (watermarks->d.cstate_pstate.pstate_change_ns
< hubbub1->watermarks.d.cstate_pstate.pstate_change_ns)
wm_pending = true;
return wm_pending;
}
bool hubbub1_program_watermarks(
struct hubbub *hubbub,
struct dcn_watermark_set *watermarks,
unsigned int refclk_mhz,
bool safe_to_lower)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
bool wm_pending = false;
/*
* Need to clamp to max of the register values (i.e. no wrap)
* for dcn1, all wm registers are 21-bit wide
*/
if (hubbub1_program_urgent_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
wm_pending = true;
if (hubbub1_program_stutter_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
wm_pending = true;
if (hubbub1_program_pstate_watermarks(hubbub, watermarks, refclk_mhz, safe_to_lower))
wm_pending = true;
REG_UPDATE(DCHUBBUB_ARB_SAT_LEVEL,
DCHUBBUB_ARB_SAT_LEVEL, 60 * refclk_mhz);
REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,
DCHUBBUB_ARB_MIN_REQ_OUTSTAND, 68);
hubbub1_allow_self_refresh_control(hubbub, !hubbub->ctx->dc->debug.disable_stutter);
#if 0
REG_UPDATE_2(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_DONE_INTERRUPT_DISABLE, 1,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, 1);
#endif
return wm_pending;
}
void hubbub1_update_dchub(
struct hubbub *hubbub,
struct dchub_init_data *dh_data)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
if (REG(DCHUBBUB_SDPIF_FB_TOP) == 0) {
ASSERT(false);
/*should not come here*/
return;
}
/* TODO: port code from dal2 */
switch (dh_data->fb_mode) {
case FRAME_BUFFER_MODE_ZFB_ONLY:
/*For ZFB case need to put DCHUB FB BASE and TOP upside down to indicate ZFB mode*/
REG_UPDATE(DCHUBBUB_SDPIF_FB_TOP,
SDPIF_FB_TOP, 0);
REG_UPDATE(DCHUBBUB_SDPIF_FB_BASE,
SDPIF_FB_BASE, 0x0FFFF);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_BASE,
SDPIF_AGP_BASE, dh_data->zfb_phys_addr_base >> 22);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_BOT,
SDPIF_AGP_BOT, dh_data->zfb_mc_base_addr >> 22);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_TOP,
SDPIF_AGP_TOP, (dh_data->zfb_mc_base_addr +
dh_data->zfb_size_in_byte - 1) >> 22);
break;
case FRAME_BUFFER_MODE_MIXED_ZFB_AND_LOCAL:
/*Should not touch FB LOCATION (done by VBIOS on AsicInit table)*/
REG_UPDATE(DCHUBBUB_SDPIF_AGP_BASE,
SDPIF_AGP_BASE, dh_data->zfb_phys_addr_base >> 22);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_BOT,
SDPIF_AGP_BOT, dh_data->zfb_mc_base_addr >> 22);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_TOP,
SDPIF_AGP_TOP, (dh_data->zfb_mc_base_addr +
dh_data->zfb_size_in_byte - 1) >> 22);
break;
case FRAME_BUFFER_MODE_LOCAL_ONLY:
/*Should not touch FB LOCATION (done by VBIOS on AsicInit table)*/
REG_UPDATE(DCHUBBUB_SDPIF_AGP_BASE,
SDPIF_AGP_BASE, 0);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_BOT,
SDPIF_AGP_BOT, 0X03FFFF);
REG_UPDATE(DCHUBBUB_SDPIF_AGP_TOP,
SDPIF_AGP_TOP, 0);
break;
default:
break;
}
dh_data->dchub_initialzied = true;
dh_data->dchub_info_valid = false;
}
void hubbub1_toggle_watermark_change_req(struct hubbub *hubbub)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
uint32_t watermark_change_req;
REG_GET(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, &watermark_change_req);
if (watermark_change_req)
watermark_change_req = 0;
else
watermark_change_req = 1;
REG_UPDATE(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
DCHUBBUB_ARB_WATERMARK_CHANGE_REQUEST, watermark_change_req);
}
void hubbub1_soft_reset(struct hubbub *hubbub, bool reset)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
uint32_t reset_en = reset ? 1 : 0;
REG_UPDATE(DCHUBBUB_SOFT_RESET,
DCHUBBUB_GLOBAL_SOFT_RESET, reset_en);
}
static bool hubbub1_dcc_support_swizzle(
enum swizzle_mode_values swizzle,
unsigned int bytes_per_element,
enum segment_order *segment_order_horz,
enum segment_order *segment_order_vert)
{
bool standard_swizzle = false;
bool display_swizzle = false;
switch (swizzle) {
case DC_SW_4KB_S:
case DC_SW_64KB_S:
case DC_SW_VAR_S:
case DC_SW_4KB_S_X:
case DC_SW_64KB_S_X:
case DC_SW_VAR_S_X:
standard_swizzle = true;
break;
case DC_SW_4KB_D:
case DC_SW_64KB_D:
case DC_SW_VAR_D:
case DC_SW_4KB_D_X:
case DC_SW_64KB_D_X:
case DC_SW_VAR_D_X:
display_swizzle = true;
break;
default:
break;
}
if (bytes_per_element == 1 && standard_swizzle) {
*segment_order_horz = segment_order__contiguous;
*segment_order_vert = segment_order__na;
return true;
}
if (bytes_per_element == 2 && standard_swizzle) {
*segment_order_horz = segment_order__non_contiguous;
*segment_order_vert = segment_order__contiguous;
return true;
}
if (bytes_per_element == 4 && standard_swizzle) {
*segment_order_horz = segment_order__non_contiguous;
*segment_order_vert = segment_order__contiguous;
return true;
}
if (bytes_per_element == 8 && standard_swizzle) {
*segment_order_horz = segment_order__na;
*segment_order_vert = segment_order__contiguous;
return true;
}
if (bytes_per_element == 8 && display_swizzle) {
*segment_order_horz = segment_order__contiguous;
*segment_order_vert = segment_order__non_contiguous;
return true;
}
return false;
}
static bool hubbub1_dcc_support_pixel_format(
enum surface_pixel_format format,
unsigned int *bytes_per_element)
{
/* DML: get_bytes_per_element */
switch (format) {
case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
*bytes_per_element = 2;
return true;
case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
*bytes_per_element = 4;
return true;
case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616:
case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
*bytes_per_element = 8;
return true;
default:
return false;
}
}
static void hubbub1_get_blk256_size(unsigned int *blk256_width, unsigned int *blk256_height,
unsigned int bytes_per_element)
{
/* copied from DML. might want to refactor DML to leverage from DML */
/* DML : get_blk256_size */
if (bytes_per_element == 1) {
*blk256_width = 16;
*blk256_height = 16;
} else if (bytes_per_element == 2) {
*blk256_width = 16;
*blk256_height = 8;
} else if (bytes_per_element == 4) {
*blk256_width = 8;
*blk256_height = 8;
} else if (bytes_per_element == 8) {
*blk256_width = 8;
*blk256_height = 4;
}
}
static void hubbub1_det_request_size(
unsigned int height,
unsigned int width,
unsigned int bpe,
bool *req128_horz_wc,
bool *req128_vert_wc)
{
unsigned int detile_buf_size = 164 * 1024; /* 164KB for DCN1.0 */
unsigned int blk256_height = 0;
unsigned int blk256_width = 0;
unsigned int swath_bytes_horz_wc, swath_bytes_vert_wc;
hubbub1_get_blk256_size(&blk256_width, &blk256_height, bpe);
swath_bytes_horz_wc = width * blk256_height * bpe;
swath_bytes_vert_wc = height * blk256_width * bpe;
*req128_horz_wc = (2 * swath_bytes_horz_wc <= detile_buf_size) ?
false : /* full 256B request */
true; /* half 128b request */
*req128_vert_wc = (2 * swath_bytes_vert_wc <= detile_buf_size) ?
false : /* full 256B request */
true; /* half 128b request */
}
static bool hubbub1_get_dcc_compression_cap(struct hubbub *hubbub,
const struct dc_dcc_surface_param *input,
struct dc_surface_dcc_cap *output)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
struct dc *dc = hubbub1->base.ctx->dc;
/* implement section 1.6.2.1 of DCN1_Programming_Guide.docx */
enum dcc_control dcc_control;
unsigned int bpe;
enum segment_order segment_order_horz, segment_order_vert;
bool req128_horz_wc, req128_vert_wc;
memset(output, 0, sizeof(*output));
if (dc->debug.disable_dcc == DCC_DISABLE)
return false;
if (!hubbub1->base.funcs->dcc_support_pixel_format(input->format, &bpe))
return false;
if (!hubbub1->base.funcs->dcc_support_swizzle(input->swizzle_mode, bpe,
&segment_order_horz, &segment_order_vert))
return false;
hubbub1_det_request_size(input->surface_size.height, input->surface_size.width,
bpe, &req128_horz_wc, &req128_vert_wc);
if (!req128_horz_wc && !req128_vert_wc) {
dcc_control = dcc_control__256_256_xxx;
} else if (input->scan == SCAN_DIRECTION_HORIZONTAL) {
if (!req128_horz_wc)
dcc_control = dcc_control__256_256_xxx;
else if (segment_order_horz == segment_order__contiguous)
dcc_control = dcc_control__128_128_xxx;
else
dcc_control = dcc_control__256_64_64;
} else if (input->scan == SCAN_DIRECTION_VERTICAL) {
if (!req128_vert_wc)
dcc_control = dcc_control__256_256_xxx;
else if (segment_order_vert == segment_order__contiguous)
dcc_control = dcc_control__128_128_xxx;
else
dcc_control = dcc_control__256_64_64;
} else {
if ((req128_horz_wc &&
segment_order_horz == segment_order__non_contiguous) ||
(req128_vert_wc &&
segment_order_vert == segment_order__non_contiguous))
/* access_dir not known, must use most constraining */
dcc_control = dcc_control__256_64_64;
else
/* reg128 is true for either horz and vert
* but segment_order is contiguous
*/
dcc_control = dcc_control__128_128_xxx;
}
if (dc->debug.disable_dcc == DCC_HALF_REQ_DISALBE &&
dcc_control != dcc_control__256_256_xxx)
return false;
switch (dcc_control) {
case dcc_control__256_256_xxx:
output->grph.rgb.max_uncompressed_blk_size = 256;
output->grph.rgb.max_compressed_blk_size = 256;
output->grph.rgb.independent_64b_blks = false;
break;
case dcc_control__128_128_xxx:
output->grph.rgb.max_uncompressed_blk_size = 128;
output->grph.rgb.max_compressed_blk_size = 128;
output->grph.rgb.independent_64b_blks = false;
break;
case dcc_control__256_64_64:
output->grph.rgb.max_uncompressed_blk_size = 256;
output->grph.rgb.max_compressed_blk_size = 64;
output->grph.rgb.independent_64b_blks = true;
break;
default:
ASSERT(false);
break;
}
output->capable = true;
output->const_color_support = false;
return true;
}
static const struct hubbub_funcs hubbub1_funcs = {
.update_dchub = hubbub1_update_dchub,
.dcc_support_swizzle = hubbub1_dcc_support_swizzle,
.dcc_support_pixel_format = hubbub1_dcc_support_pixel_format,
.get_dcc_compression_cap = hubbub1_get_dcc_compression_cap,
.wm_read_state = hubbub1_wm_read_state,
.program_watermarks = hubbub1_program_watermarks,
.is_allow_self_refresh_enabled = hubbub1_is_allow_self_refresh_enabled,
.allow_self_refresh_control = hubbub1_allow_self_refresh_control,
.verify_allow_pstate_change_high = hubbub1_verify_allow_pstate_change_high,
};
void hubbub1_construct(struct hubbub *hubbub,
struct dc_context *ctx,
const struct dcn_hubbub_registers *hubbub_regs,
const struct dcn_hubbub_shift *hubbub_shift,
const struct dcn_hubbub_mask *hubbub_mask)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
hubbub1->base.ctx = ctx;
hubbub1->base.funcs = &hubbub1_funcs;
hubbub1->regs = hubbub_regs;
hubbub1->shifts = hubbub_shift;
hubbub1->masks = hubbub_mask;
hubbub1->debug_test_index_pstate = 0x7;
if (ctx->dce_version == DCN_VERSION_1_01)
hubbub1->debug_test_index_pstate = 0xB;
}
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