2229 lines
64 KiB
C
2229 lines
64 KiB
C
/*
|
|
* Copyright © 2013 Intel Corporation
|
|
*
|
|
* 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 (including the next
|
|
* paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
|
|
*/
|
|
|
|
#include <linux/pm_runtime.h>
|
|
#include <asm/iosf_mbi.h>
|
|
|
|
#include "i915_drv.h"
|
|
#include "i915_trace.h"
|
|
#include "i915_vgpu.h"
|
|
#include "intel_pm.h"
|
|
|
|
#define FORCEWAKE_ACK_TIMEOUT_MS 50
|
|
#define GT_FIFO_TIMEOUT_MS 10
|
|
|
|
#define __raw_posting_read(...) ((void)__raw_uncore_read32(__VA_ARGS__))
|
|
|
|
void
|
|
intel_uncore_mmio_debug_init_early(struct intel_uncore_mmio_debug *mmio_debug)
|
|
{
|
|
spin_lock_init(&mmio_debug->lock);
|
|
mmio_debug->unclaimed_mmio_check = 1;
|
|
}
|
|
|
|
static void mmio_debug_suspend(struct intel_uncore_mmio_debug *mmio_debug)
|
|
{
|
|
lockdep_assert_held(&mmio_debug->lock);
|
|
|
|
/* Save and disable mmio debugging for the user bypass */
|
|
if (!mmio_debug->suspend_count++) {
|
|
mmio_debug->saved_mmio_check = mmio_debug->unclaimed_mmio_check;
|
|
mmio_debug->unclaimed_mmio_check = 0;
|
|
}
|
|
}
|
|
|
|
static void mmio_debug_resume(struct intel_uncore_mmio_debug *mmio_debug)
|
|
{
|
|
lockdep_assert_held(&mmio_debug->lock);
|
|
|
|
if (!--mmio_debug->suspend_count)
|
|
mmio_debug->unclaimed_mmio_check = mmio_debug->saved_mmio_check;
|
|
}
|
|
|
|
static const char * const forcewake_domain_names[] = {
|
|
"render",
|
|
"blitter",
|
|
"media",
|
|
"vdbox0",
|
|
"vdbox1",
|
|
"vdbox2",
|
|
"vdbox3",
|
|
"vebox0",
|
|
"vebox1",
|
|
};
|
|
|
|
const char *
|
|
intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id)
|
|
{
|
|
BUILD_BUG_ON(ARRAY_SIZE(forcewake_domain_names) != FW_DOMAIN_ID_COUNT);
|
|
|
|
if (id >= 0 && id < FW_DOMAIN_ID_COUNT)
|
|
return forcewake_domain_names[id];
|
|
|
|
WARN_ON(id);
|
|
|
|
return "unknown";
|
|
}
|
|
|
|
#define fw_ack(d) readl((d)->reg_ack)
|
|
#define fw_set(d, val) writel(_MASKED_BIT_ENABLE((val)), (d)->reg_set)
|
|
#define fw_clear(d, val) writel(_MASKED_BIT_DISABLE((val)), (d)->reg_set)
|
|
|
|
static inline void
|
|
fw_domain_reset(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
/*
|
|
* We don't really know if the powerwell for the forcewake domain we are
|
|
* trying to reset here does exist at this point (engines could be fused
|
|
* off in ICL+), so no waiting for acks
|
|
*/
|
|
/* WaRsClearFWBitsAtReset:bdw,skl */
|
|
fw_clear(d, 0xffff);
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
GEM_BUG_ON(d->uncore->fw_domains_timer & d->mask);
|
|
d->uncore->fw_domains_timer |= d->mask;
|
|
d->wake_count++;
|
|
hrtimer_start_range_ns(&d->timer,
|
|
NSEC_PER_MSEC,
|
|
NSEC_PER_MSEC,
|
|
HRTIMER_MODE_REL);
|
|
}
|
|
|
|
static inline int
|
|
__wait_for_ack(const struct intel_uncore_forcewake_domain *d,
|
|
const u32 ack,
|
|
const u32 value)
|
|
{
|
|
return wait_for_atomic((fw_ack(d) & ack) == value,
|
|
FORCEWAKE_ACK_TIMEOUT_MS);
|
|
}
|
|
|
|
static inline int
|
|
wait_ack_clear(const struct intel_uncore_forcewake_domain *d,
|
|
const u32 ack)
|
|
{
|
|
return __wait_for_ack(d, ack, 0);
|
|
}
|
|
|
|
static inline int
|
|
wait_ack_set(const struct intel_uncore_forcewake_domain *d,
|
|
const u32 ack)
|
|
{
|
|
return __wait_for_ack(d, ack, ack);
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
if (wait_ack_clear(d, FORCEWAKE_KERNEL)) {
|
|
DRM_ERROR("%s: timed out waiting for forcewake ack to clear.\n",
|
|
intel_uncore_forcewake_domain_to_str(d->id));
|
|
add_taint_for_CI(d->uncore->i915, TAINT_WARN); /* CI now unreliable */
|
|
}
|
|
}
|
|
|
|
enum ack_type {
|
|
ACK_CLEAR = 0,
|
|
ACK_SET
|
|
};
|
|
|
|
static int
|
|
fw_domain_wait_ack_with_fallback(const struct intel_uncore_forcewake_domain *d,
|
|
const enum ack_type type)
|
|
{
|
|
const u32 ack_bit = FORCEWAKE_KERNEL;
|
|
const u32 value = type == ACK_SET ? ack_bit : 0;
|
|
unsigned int pass;
|
|
bool ack_detected;
|
|
|
|
/*
|
|
* There is a possibility of driver's wake request colliding
|
|
* with hardware's own wake requests and that can cause
|
|
* hardware to not deliver the driver's ack message.
|
|
*
|
|
* Use a fallback bit toggle to kick the gpu state machine
|
|
* in the hope that the original ack will be delivered along with
|
|
* the fallback ack.
|
|
*
|
|
* This workaround is described in HSDES #1604254524 and it's known as:
|
|
* WaRsForcewakeAddDelayForAck:skl,bxt,kbl,glk,cfl,cnl,icl
|
|
* although the name is a bit misleading.
|
|
*/
|
|
|
|
pass = 1;
|
|
do {
|
|
wait_ack_clear(d, FORCEWAKE_KERNEL_FALLBACK);
|
|
|
|
fw_set(d, FORCEWAKE_KERNEL_FALLBACK);
|
|
/* Give gt some time to relax before the polling frenzy */
|
|
udelay(10 * pass);
|
|
wait_ack_set(d, FORCEWAKE_KERNEL_FALLBACK);
|
|
|
|
ack_detected = (fw_ack(d) & ack_bit) == value;
|
|
|
|
fw_clear(d, FORCEWAKE_KERNEL_FALLBACK);
|
|
} while (!ack_detected && pass++ < 10);
|
|
|
|
DRM_DEBUG_DRIVER("%s had to use fallback to %s ack, 0x%x (passes %u)\n",
|
|
intel_uncore_forcewake_domain_to_str(d->id),
|
|
type == ACK_SET ? "set" : "clear",
|
|
fw_ack(d),
|
|
pass);
|
|
|
|
return ack_detected ? 0 : -ETIMEDOUT;
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_wait_ack_clear_fallback(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
if (likely(!wait_ack_clear(d, FORCEWAKE_KERNEL)))
|
|
return;
|
|
|
|
if (fw_domain_wait_ack_with_fallback(d, ACK_CLEAR))
|
|
fw_domain_wait_ack_clear(d);
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_get(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
fw_set(d, FORCEWAKE_KERNEL);
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_wait_ack_set(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
if (wait_ack_set(d, FORCEWAKE_KERNEL)) {
|
|
DRM_ERROR("%s: timed out waiting for forcewake ack request.\n",
|
|
intel_uncore_forcewake_domain_to_str(d->id));
|
|
add_taint_for_CI(d->uncore->i915, TAINT_WARN); /* CI now unreliable */
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_wait_ack_set_fallback(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
if (likely(!wait_ack_set(d, FORCEWAKE_KERNEL)))
|
|
return;
|
|
|
|
if (fw_domain_wait_ack_with_fallback(d, ACK_SET))
|
|
fw_domain_wait_ack_set(d);
|
|
}
|
|
|
|
static inline void
|
|
fw_domain_put(const struct intel_uncore_forcewake_domain *d)
|
|
{
|
|
fw_clear(d, FORCEWAKE_KERNEL);
|
|
}
|
|
|
|
static void
|
|
fw_domains_get(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
unsigned int tmp;
|
|
|
|
GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
|
|
|
|
for_each_fw_domain_masked(d, fw_domains, uncore, tmp) {
|
|
fw_domain_wait_ack_clear(d);
|
|
fw_domain_get(d);
|
|
}
|
|
|
|
for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
|
|
fw_domain_wait_ack_set(d);
|
|
|
|
uncore->fw_domains_active |= fw_domains;
|
|
}
|
|
|
|
static void
|
|
fw_domains_get_with_fallback(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
unsigned int tmp;
|
|
|
|
GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
|
|
|
|
for_each_fw_domain_masked(d, fw_domains, uncore, tmp) {
|
|
fw_domain_wait_ack_clear_fallback(d);
|
|
fw_domain_get(d);
|
|
}
|
|
|
|
for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
|
|
fw_domain_wait_ack_set_fallback(d);
|
|
|
|
uncore->fw_domains_active |= fw_domains;
|
|
}
|
|
|
|
static void
|
|
fw_domains_put(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
unsigned int tmp;
|
|
|
|
GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
|
|
|
|
for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
|
|
fw_domain_put(d);
|
|
|
|
uncore->fw_domains_active &= ~fw_domains;
|
|
}
|
|
|
|
static void
|
|
fw_domains_reset(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
unsigned int tmp;
|
|
|
|
if (!fw_domains)
|
|
return;
|
|
|
|
GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
|
|
|
|
for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
|
|
fw_domain_reset(d);
|
|
}
|
|
|
|
static inline u32 gt_thread_status(struct intel_uncore *uncore)
|
|
{
|
|
u32 val;
|
|
|
|
val = __raw_uncore_read32(uncore, GEN6_GT_THREAD_STATUS_REG);
|
|
val &= GEN6_GT_THREAD_STATUS_CORE_MASK;
|
|
|
|
return val;
|
|
}
|
|
|
|
static void __gen6_gt_wait_for_thread_c0(struct intel_uncore *uncore)
|
|
{
|
|
/*
|
|
* w/a for a sporadic read returning 0 by waiting for the GT
|
|
* thread to wake up.
|
|
*/
|
|
drm_WARN_ONCE(&uncore->i915->drm,
|
|
wait_for_atomic_us(gt_thread_status(uncore) == 0, 5000),
|
|
"GT thread status wait timed out\n");
|
|
}
|
|
|
|
static void fw_domains_get_with_thread_status(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
fw_domains_get(uncore, fw_domains);
|
|
|
|
/* WaRsForcewakeWaitTC0:snb,ivb,hsw,bdw,vlv */
|
|
__gen6_gt_wait_for_thread_c0(uncore);
|
|
}
|
|
|
|
static inline u32 fifo_free_entries(struct intel_uncore *uncore)
|
|
{
|
|
u32 count = __raw_uncore_read32(uncore, GTFIFOCTL);
|
|
|
|
return count & GT_FIFO_FREE_ENTRIES_MASK;
|
|
}
|
|
|
|
static void __gen6_gt_wait_for_fifo(struct intel_uncore *uncore)
|
|
{
|
|
u32 n;
|
|
|
|
/* On VLV, FIFO will be shared by both SW and HW.
|
|
* So, we need to read the FREE_ENTRIES everytime */
|
|
if (IS_VALLEYVIEW(uncore->i915))
|
|
n = fifo_free_entries(uncore);
|
|
else
|
|
n = uncore->fifo_count;
|
|
|
|
if (n <= GT_FIFO_NUM_RESERVED_ENTRIES) {
|
|
if (wait_for_atomic((n = fifo_free_entries(uncore)) >
|
|
GT_FIFO_NUM_RESERVED_ENTRIES,
|
|
GT_FIFO_TIMEOUT_MS)) {
|
|
drm_dbg(&uncore->i915->drm,
|
|
"GT_FIFO timeout, entries: %u\n", n);
|
|
return;
|
|
}
|
|
}
|
|
|
|
uncore->fifo_count = n - 1;
|
|
}
|
|
|
|
static enum hrtimer_restart
|
|
intel_uncore_fw_release_timer(struct hrtimer *timer)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain =
|
|
container_of(timer, struct intel_uncore_forcewake_domain, timer);
|
|
struct intel_uncore *uncore = domain->uncore;
|
|
unsigned long irqflags;
|
|
|
|
assert_rpm_device_not_suspended(uncore->rpm);
|
|
|
|
if (xchg(&domain->active, false))
|
|
return HRTIMER_RESTART;
|
|
|
|
spin_lock_irqsave(&uncore->lock, irqflags);
|
|
|
|
uncore->fw_domains_timer &= ~domain->mask;
|
|
|
|
GEM_BUG_ON(!domain->wake_count);
|
|
if (--domain->wake_count == 0)
|
|
uncore->funcs.force_wake_put(uncore, domain->mask);
|
|
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags);
|
|
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
/* Note callers must have acquired the PUNIT->PMIC bus, before calling this. */
|
|
static unsigned int
|
|
intel_uncore_forcewake_reset(struct intel_uncore *uncore)
|
|
{
|
|
unsigned long irqflags;
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
int retry_count = 100;
|
|
enum forcewake_domains fw, active_domains;
|
|
|
|
iosf_mbi_assert_punit_acquired();
|
|
|
|
/* Hold uncore.lock across reset to prevent any register access
|
|
* with forcewake not set correctly. Wait until all pending
|
|
* timers are run before holding.
|
|
*/
|
|
while (1) {
|
|
unsigned int tmp;
|
|
|
|
active_domains = 0;
|
|
|
|
for_each_fw_domain(domain, uncore, tmp) {
|
|
smp_store_mb(domain->active, false);
|
|
if (hrtimer_cancel(&domain->timer) == 0)
|
|
continue;
|
|
|
|
intel_uncore_fw_release_timer(&domain->timer);
|
|
}
|
|
|
|
spin_lock_irqsave(&uncore->lock, irqflags);
|
|
|
|
for_each_fw_domain(domain, uncore, tmp) {
|
|
if (hrtimer_active(&domain->timer))
|
|
active_domains |= domain->mask;
|
|
}
|
|
|
|
if (active_domains == 0)
|
|
break;
|
|
|
|
if (--retry_count == 0) {
|
|
drm_err(&uncore->i915->drm, "Timed out waiting for forcewake timers to finish\n");
|
|
break;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags);
|
|
cond_resched();
|
|
}
|
|
|
|
drm_WARN_ON(&uncore->i915->drm, active_domains);
|
|
|
|
fw = uncore->fw_domains_active;
|
|
if (fw)
|
|
uncore->funcs.force_wake_put(uncore, fw);
|
|
|
|
fw_domains_reset(uncore, uncore->fw_domains);
|
|
assert_forcewakes_inactive(uncore);
|
|
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags);
|
|
|
|
return fw; /* track the lost user forcewake domains */
|
|
}
|
|
|
|
static bool
|
|
fpga_check_for_unclaimed_mmio(struct intel_uncore *uncore)
|
|
{
|
|
u32 dbg;
|
|
|
|
dbg = __raw_uncore_read32(uncore, FPGA_DBG);
|
|
if (likely(!(dbg & FPGA_DBG_RM_NOCLAIM)))
|
|
return false;
|
|
|
|
__raw_uncore_write32(uncore, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
vlv_check_for_unclaimed_mmio(struct intel_uncore *uncore)
|
|
{
|
|
u32 cer;
|
|
|
|
cer = __raw_uncore_read32(uncore, CLAIM_ER);
|
|
if (likely(!(cer & (CLAIM_ER_OVERFLOW | CLAIM_ER_CTR_MASK))))
|
|
return false;
|
|
|
|
__raw_uncore_write32(uncore, CLAIM_ER, CLAIM_ER_CLR);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
gen6_check_for_fifo_debug(struct intel_uncore *uncore)
|
|
{
|
|
u32 fifodbg;
|
|
|
|
fifodbg = __raw_uncore_read32(uncore, GTFIFODBG);
|
|
|
|
if (unlikely(fifodbg)) {
|
|
drm_dbg(&uncore->i915->drm, "GTFIFODBG = 0x08%x\n", fifodbg);
|
|
__raw_uncore_write32(uncore, GTFIFODBG, fifodbg);
|
|
}
|
|
|
|
return fifodbg;
|
|
}
|
|
|
|
static bool
|
|
check_for_unclaimed_mmio(struct intel_uncore *uncore)
|
|
{
|
|
bool ret = false;
|
|
|
|
lockdep_assert_held(&uncore->debug->lock);
|
|
|
|
if (uncore->debug->suspend_count)
|
|
return false;
|
|
|
|
if (intel_uncore_has_fpga_dbg_unclaimed(uncore))
|
|
ret |= fpga_check_for_unclaimed_mmio(uncore);
|
|
|
|
if (intel_uncore_has_dbg_unclaimed(uncore))
|
|
ret |= vlv_check_for_unclaimed_mmio(uncore);
|
|
|
|
if (intel_uncore_has_fifo(uncore))
|
|
ret |= gen6_check_for_fifo_debug(uncore);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void forcewake_early_sanitize(struct intel_uncore *uncore,
|
|
unsigned int restore_forcewake)
|
|
{
|
|
GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
|
|
|
|
/* WaDisableShadowRegForCpd:chv */
|
|
if (IS_CHERRYVIEW(uncore->i915)) {
|
|
__raw_uncore_write32(uncore, GTFIFOCTL,
|
|
__raw_uncore_read32(uncore, GTFIFOCTL) |
|
|
GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL |
|
|
GT_FIFO_CTL_RC6_POLICY_STALL);
|
|
}
|
|
|
|
iosf_mbi_punit_acquire();
|
|
intel_uncore_forcewake_reset(uncore);
|
|
if (restore_forcewake) {
|
|
spin_lock_irq(&uncore->lock);
|
|
uncore->funcs.force_wake_get(uncore, restore_forcewake);
|
|
|
|
if (intel_uncore_has_fifo(uncore))
|
|
uncore->fifo_count = fifo_free_entries(uncore);
|
|
spin_unlock_irq(&uncore->lock);
|
|
}
|
|
iosf_mbi_punit_release();
|
|
}
|
|
|
|
void intel_uncore_suspend(struct intel_uncore *uncore)
|
|
{
|
|
if (!intel_uncore_has_forcewake(uncore))
|
|
return;
|
|
|
|
iosf_mbi_punit_acquire();
|
|
iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
|
|
&uncore->pmic_bus_access_nb);
|
|
uncore->fw_domains_saved = intel_uncore_forcewake_reset(uncore);
|
|
iosf_mbi_punit_release();
|
|
}
|
|
|
|
void intel_uncore_resume_early(struct intel_uncore *uncore)
|
|
{
|
|
unsigned int restore_forcewake;
|
|
|
|
if (intel_uncore_unclaimed_mmio(uncore))
|
|
drm_dbg(&uncore->i915->drm, "unclaimed mmio detected on resume, clearing\n");
|
|
|
|
if (!intel_uncore_has_forcewake(uncore))
|
|
return;
|
|
|
|
restore_forcewake = fetch_and_zero(&uncore->fw_domains_saved);
|
|
forcewake_early_sanitize(uncore, restore_forcewake);
|
|
|
|
iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
|
|
}
|
|
|
|
void intel_uncore_runtime_resume(struct intel_uncore *uncore)
|
|
{
|
|
if (!intel_uncore_has_forcewake(uncore))
|
|
return;
|
|
|
|
iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
|
|
}
|
|
|
|
static void __intel_uncore_forcewake_get(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
fw_domains &= uncore->fw_domains;
|
|
|
|
for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
|
|
if (domain->wake_count++) {
|
|
fw_domains &= ~domain->mask;
|
|
domain->active = true;
|
|
}
|
|
}
|
|
|
|
if (fw_domains)
|
|
uncore->funcs.force_wake_get(uncore, fw_domains);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_get - grab forcewake domain references
|
|
* @uncore: the intel_uncore structure
|
|
* @fw_domains: forcewake domains to get reference on
|
|
*
|
|
* This function can be used get GT's forcewake domain references.
|
|
* Normal register access will handle the forcewake domains automatically.
|
|
* However if some sequence requires the GT to not power down a particular
|
|
* forcewake domains this function should be called at the beginning of the
|
|
* sequence. And subsequently the reference should be dropped by symmetric
|
|
* call to intel_unforce_forcewake_put(). Usually caller wants all the domains
|
|
* to be kept awake so the @fw_domains would be then FORCEWAKE_ALL.
|
|
*/
|
|
void intel_uncore_forcewake_get(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
unsigned long irqflags;
|
|
|
|
if (!uncore->funcs.force_wake_get)
|
|
return;
|
|
|
|
assert_rpm_wakelock_held(uncore->rpm);
|
|
|
|
spin_lock_irqsave(&uncore->lock, irqflags);
|
|
__intel_uncore_forcewake_get(uncore, fw_domains);
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_user_get - claim forcewake on behalf of userspace
|
|
* @uncore: the intel_uncore structure
|
|
*
|
|
* This function is a wrapper around intel_uncore_forcewake_get() to acquire
|
|
* the GT powerwell and in the process disable our debugging for the
|
|
* duration of userspace's bypass.
|
|
*/
|
|
void intel_uncore_forcewake_user_get(struct intel_uncore *uncore)
|
|
{
|
|
spin_lock_irq(&uncore->lock);
|
|
if (!uncore->user_forcewake_count++) {
|
|
intel_uncore_forcewake_get__locked(uncore, FORCEWAKE_ALL);
|
|
spin_lock(&uncore->debug->lock);
|
|
mmio_debug_suspend(uncore->debug);
|
|
spin_unlock(&uncore->debug->lock);
|
|
}
|
|
spin_unlock_irq(&uncore->lock);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_user_put - release forcewake on behalf of userspace
|
|
* @uncore: the intel_uncore structure
|
|
*
|
|
* This function complements intel_uncore_forcewake_user_get() and releases
|
|
* the GT powerwell taken on behalf of the userspace bypass.
|
|
*/
|
|
void intel_uncore_forcewake_user_put(struct intel_uncore *uncore)
|
|
{
|
|
spin_lock_irq(&uncore->lock);
|
|
if (!--uncore->user_forcewake_count) {
|
|
spin_lock(&uncore->debug->lock);
|
|
mmio_debug_resume(uncore->debug);
|
|
|
|
if (check_for_unclaimed_mmio(uncore))
|
|
drm_info(&uncore->i915->drm,
|
|
"Invalid mmio detected during user access\n");
|
|
spin_unlock(&uncore->debug->lock);
|
|
|
|
intel_uncore_forcewake_put__locked(uncore, FORCEWAKE_ALL);
|
|
}
|
|
spin_unlock_irq(&uncore->lock);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_get__locked - grab forcewake domain references
|
|
* @uncore: the intel_uncore structure
|
|
* @fw_domains: forcewake domains to get reference on
|
|
*
|
|
* See intel_uncore_forcewake_get(). This variant places the onus
|
|
* on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
|
|
*/
|
|
void intel_uncore_forcewake_get__locked(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
lockdep_assert_held(&uncore->lock);
|
|
|
|
if (!uncore->funcs.force_wake_get)
|
|
return;
|
|
|
|
__intel_uncore_forcewake_get(uncore, fw_domains);
|
|
}
|
|
|
|
static void __intel_uncore_forcewake_put(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
fw_domains &= uncore->fw_domains;
|
|
|
|
for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
|
|
GEM_BUG_ON(!domain->wake_count);
|
|
|
|
if (--domain->wake_count) {
|
|
domain->active = true;
|
|
continue;
|
|
}
|
|
|
|
uncore->funcs.force_wake_put(uncore, domain->mask);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_put - release a forcewake domain reference
|
|
* @uncore: the intel_uncore structure
|
|
* @fw_domains: forcewake domains to put references
|
|
*
|
|
* This function drops the device-level forcewakes for specified
|
|
* domains obtained by intel_uncore_forcewake_get().
|
|
*/
|
|
void intel_uncore_forcewake_put(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
unsigned long irqflags;
|
|
|
|
if (!uncore->funcs.force_wake_put)
|
|
return;
|
|
|
|
spin_lock_irqsave(&uncore->lock, irqflags);
|
|
__intel_uncore_forcewake_put(uncore, fw_domains);
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags);
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_flush - flush the delayed release
|
|
* @uncore: the intel_uncore structure
|
|
* @fw_domains: forcewake domains to flush
|
|
*/
|
|
void intel_uncore_forcewake_flush(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
if (!uncore->funcs.force_wake_put)
|
|
return;
|
|
|
|
fw_domains &= uncore->fw_domains;
|
|
for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
|
|
WRITE_ONCE(domain->active, false);
|
|
if (hrtimer_cancel(&domain->timer))
|
|
intel_uncore_fw_release_timer(&domain->timer);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_put__locked - grab forcewake domain references
|
|
* @uncore: the intel_uncore structure
|
|
* @fw_domains: forcewake domains to get reference on
|
|
*
|
|
* See intel_uncore_forcewake_put(). This variant places the onus
|
|
* on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
|
|
*/
|
|
void intel_uncore_forcewake_put__locked(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
lockdep_assert_held(&uncore->lock);
|
|
|
|
if (!uncore->funcs.force_wake_put)
|
|
return;
|
|
|
|
__intel_uncore_forcewake_put(uncore, fw_domains);
|
|
}
|
|
|
|
void assert_forcewakes_inactive(struct intel_uncore *uncore)
|
|
{
|
|
if (!uncore->funcs.force_wake_get)
|
|
return;
|
|
|
|
drm_WARN(&uncore->i915->drm, uncore->fw_domains_active,
|
|
"Expected all fw_domains to be inactive, but %08x are still on\n",
|
|
uncore->fw_domains_active);
|
|
}
|
|
|
|
void assert_forcewakes_active(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
|
|
return;
|
|
|
|
if (!uncore->funcs.force_wake_get)
|
|
return;
|
|
|
|
spin_lock_irq(&uncore->lock);
|
|
|
|
assert_rpm_wakelock_held(uncore->rpm);
|
|
|
|
fw_domains &= uncore->fw_domains;
|
|
drm_WARN(&uncore->i915->drm, fw_domains & ~uncore->fw_domains_active,
|
|
"Expected %08x fw_domains to be active, but %08x are off\n",
|
|
fw_domains, fw_domains & ~uncore->fw_domains_active);
|
|
|
|
/*
|
|
* Check that the caller has an explicit wakeref and we don't mistake
|
|
* it for the auto wakeref.
|
|
*/
|
|
for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
|
|
unsigned int actual = READ_ONCE(domain->wake_count);
|
|
unsigned int expect = 1;
|
|
|
|
if (uncore->fw_domains_timer & domain->mask)
|
|
expect++; /* pending automatic release */
|
|
|
|
if (drm_WARN(&uncore->i915->drm, actual < expect,
|
|
"Expected domain %d to be held awake by caller, count=%d\n",
|
|
domain->id, actual))
|
|
break;
|
|
}
|
|
|
|
spin_unlock_irq(&uncore->lock);
|
|
}
|
|
|
|
/* We give fast paths for the really cool registers */
|
|
#define NEEDS_FORCE_WAKE(reg) ((reg) < 0x40000)
|
|
|
|
#define __gen6_reg_read_fw_domains(uncore, offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd; \
|
|
if (NEEDS_FORCE_WAKE(offset)) \
|
|
__fwd = FORCEWAKE_RENDER; \
|
|
else \
|
|
__fwd = 0; \
|
|
__fwd; \
|
|
})
|
|
|
|
static int fw_range_cmp(u32 offset, const struct intel_forcewake_range *entry)
|
|
{
|
|
if (offset < entry->start)
|
|
return -1;
|
|
else if (offset > entry->end)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Copied and "macroized" from lib/bsearch.c */
|
|
#define BSEARCH(key, base, num, cmp) ({ \
|
|
unsigned int start__ = 0, end__ = (num); \
|
|
typeof(base) result__ = NULL; \
|
|
while (start__ < end__) { \
|
|
unsigned int mid__ = start__ + (end__ - start__) / 2; \
|
|
int ret__ = (cmp)((key), (base) + mid__); \
|
|
if (ret__ < 0) { \
|
|
end__ = mid__; \
|
|
} else if (ret__ > 0) { \
|
|
start__ = mid__ + 1; \
|
|
} else { \
|
|
result__ = (base) + mid__; \
|
|
break; \
|
|
} \
|
|
} \
|
|
result__; \
|
|
})
|
|
|
|
static enum forcewake_domains
|
|
find_fw_domain(struct intel_uncore *uncore, u32 offset)
|
|
{
|
|
const struct intel_forcewake_range *entry;
|
|
|
|
entry = BSEARCH(offset,
|
|
uncore->fw_domains_table,
|
|
uncore->fw_domains_table_entries,
|
|
fw_range_cmp);
|
|
|
|
if (!entry)
|
|
return 0;
|
|
|
|
/*
|
|
* The list of FW domains depends on the SKU in gen11+ so we
|
|
* can't determine it statically. We use FORCEWAKE_ALL and
|
|
* translate it here to the list of available domains.
|
|
*/
|
|
if (entry->domains == FORCEWAKE_ALL)
|
|
return uncore->fw_domains;
|
|
|
|
drm_WARN(&uncore->i915->drm, entry->domains & ~uncore->fw_domains,
|
|
"Uninitialized forcewake domain(s) 0x%x accessed at 0x%x\n",
|
|
entry->domains & ~uncore->fw_domains, offset);
|
|
|
|
return entry->domains;
|
|
}
|
|
|
|
#define GEN_FW_RANGE(s, e, d) \
|
|
{ .start = (s), .end = (e), .domains = (d) }
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __vlv_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x5000, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb000, 0x11fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x2e000, 0x2ffff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
|
|
};
|
|
|
|
#define __fwtable_reg_read_fw_domains(uncore, offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
if (NEEDS_FORCE_WAKE((offset))) \
|
|
__fwd = find_fw_domain(uncore, offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
#define __gen11_fwtable_reg_read_fw_domains(uncore, offset) \
|
|
find_fw_domain(uncore, offset)
|
|
|
|
#define __gen12_fwtable_reg_read_fw_domains(uncore, offset) \
|
|
find_fw_domain(uncore, offset)
|
|
|
|
/* *Must* be sorted by offset! See intel_shadow_table_check(). */
|
|
static const i915_reg_t gen8_shadowed_regs[] = {
|
|
RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
|
|
GEN6_RPNSWREQ, /* 0xA008 */
|
|
GEN6_RC_VIDEO_FREQ, /* 0xA00C */
|
|
RING_TAIL(GEN6_BSD_RING_BASE), /* 0x12000 (base) */
|
|
RING_TAIL(VEBOX_RING_BASE), /* 0x1a000 (base) */
|
|
RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static const i915_reg_t gen11_shadowed_regs[] = {
|
|
RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
|
|
GEN6_RPNSWREQ, /* 0xA008 */
|
|
GEN6_RC_VIDEO_FREQ, /* 0xA00C */
|
|
RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
|
|
RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
|
|
RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
|
|
RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
|
|
RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
|
|
RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
|
|
RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static const i915_reg_t gen12_shadowed_regs[] = {
|
|
RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
|
|
GEN6_RPNSWREQ, /* 0xA008 */
|
|
GEN6_RC_VIDEO_FREQ, /* 0xA00C */
|
|
RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
|
|
RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
|
|
RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
|
|
RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
|
|
RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
|
|
RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
|
|
RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
|
|
/* TODO: Other registers are not yet used */
|
|
};
|
|
|
|
static int mmio_reg_cmp(u32 key, const i915_reg_t *reg)
|
|
{
|
|
u32 offset = i915_mmio_reg_offset(*reg);
|
|
|
|
if (key < offset)
|
|
return -1;
|
|
else if (key > offset)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
#define __is_genX_shadowed(x) \
|
|
static bool is_gen##x##_shadowed(u32 offset) \
|
|
{ \
|
|
const i915_reg_t *regs = gen##x##_shadowed_regs; \
|
|
return BSEARCH(offset, regs, ARRAY_SIZE(gen##x##_shadowed_regs), \
|
|
mmio_reg_cmp); \
|
|
}
|
|
|
|
__is_genX_shadowed(8)
|
|
__is_genX_shadowed(11)
|
|
__is_genX_shadowed(12)
|
|
|
|
static enum forcewake_domains
|
|
gen6_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg)
|
|
{
|
|
return FORCEWAKE_RENDER;
|
|
}
|
|
|
|
#define __gen8_reg_write_fw_domains(uncore, offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd; \
|
|
if (NEEDS_FORCE_WAKE(offset) && !is_gen8_shadowed(offset)) \
|
|
__fwd = FORCEWAKE_RENDER; \
|
|
else \
|
|
__fwd = 0; \
|
|
__fwd; \
|
|
})
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __chv_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x4fff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8000, 0x82ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x85ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8800, 0x88ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x9000, 0xafff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0xe000, 0xe7ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xf000, 0xffff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x1a000, 0x1bfff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x1e800, 0x1e9ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x30000, 0x37fff, FORCEWAKE_MEDIA),
|
|
};
|
|
|
|
#define __fwtable_reg_write_fw_domains(uncore, offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
if (NEEDS_FORCE_WAKE((offset)) && !is_gen8_shadowed(offset)) \
|
|
__fwd = find_fw_domain(uncore, offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
#define __gen11_fwtable_reg_write_fw_domains(uncore, offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
const u32 __offset = (offset); \
|
|
if (!is_gen11_shadowed(__offset)) \
|
|
__fwd = find_fw_domain(uncore, __offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
#define __gen12_fwtable_reg_write_fw_domains(uncore, offset) \
|
|
({ \
|
|
enum forcewake_domains __fwd = 0; \
|
|
const u32 __offset = (offset); \
|
|
if (!is_gen12_shadowed(__offset)) \
|
|
__fwd = find_fw_domain(uncore, __offset); \
|
|
__fwd; \
|
|
})
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __gen9_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */
|
|
GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8000, 0x812f, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8130, 0x813f, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8800, 0x89ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x8a00, 0x8bff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb480, 0xcfff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0xd800, 0xdfff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xe900, 0x11fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x14000, 0x19fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x1a000, 0x1e9ff, FORCEWAKE_MEDIA),
|
|
GEN_FW_RANGE(0x1ea00, 0x243ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x24800, 0x2ffff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
|
|
};
|
|
|
|
/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
|
|
static const struct intel_forcewake_range __gen11_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x0, 0x1fff, 0), /* uncore range */
|
|
GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8800, 0x8bff, 0),
|
|
GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8d00, 0x94cf, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x9560, 0x95ff, 0),
|
|
GEN_FW_RANGE(0x9600, 0xafff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb480, 0xdeff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xdf00, 0xe8ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xe900, 0x16dff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x16e00, 0x19fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x1a000, 0x23fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x24000, 0x2407f, 0),
|
|
GEN_FW_RANGE(0x24080, 0x2417f, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x24180, 0x242ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x24300, 0x243ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x24400, 0x24fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x25000, 0x3ffff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x40000, 0x1bffff, 0),
|
|
GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0),
|
|
GEN_FW_RANGE(0x1c4000, 0x1c7fff, 0),
|
|
GEN_FW_RANGE(0x1c8000, 0x1cffff, FORCEWAKE_MEDIA_VEBOX0),
|
|
GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2),
|
|
GEN_FW_RANGE(0x1d4000, 0x1dbfff, 0)
|
|
};
|
|
|
|
/*
|
|
* *Must* be sorted by offset ranges! See intel_fw_table_check().
|
|
*
|
|
* Note that the spec lists several reserved/unused ranges that don't
|
|
* actually contain any registers. In the table below we'll combine those
|
|
* reserved ranges with either the preceding or following range to keep the
|
|
* table small and lookups fast.
|
|
*/
|
|
static const struct intel_forcewake_range __gen12_fw_ranges[] = {
|
|
GEN_FW_RANGE(0x0, 0x1fff, 0), /*
|
|
0x0 - 0xaff: reserved
|
|
0xb00 - 0x1fff: always on */
|
|
GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x2700, 0x27ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x2800, 0x2aff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x2b00, 0x2fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), /*
|
|
0x4000 - 0x48ff: gt
|
|
0x4900 - 0x51ff: reserved */
|
|
GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), /*
|
|
0x5200 - 0x53ff: render
|
|
0x5400 - 0x54ff: reserved
|
|
0x5500 - 0x7fff: render */
|
|
GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8160, 0x81ff, 0), /*
|
|
0x8160 - 0x817f: reserved
|
|
0x8180 - 0x81ff: always on */
|
|
GEN_FW_RANGE(0x8200, 0x82ff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x8500, 0x94cf, FORCEWAKE_GT), /*
|
|
0x8500 - 0x87ff: gt
|
|
0x8800 - 0x8fff: reserved
|
|
0x9000 - 0x947f: gt
|
|
0x9480 - 0x94cf: reserved */
|
|
GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0x9560, 0x97ff, 0), /*
|
|
0x9560 - 0x95ff: always on
|
|
0x9600 - 0x97ff: reserved */
|
|
GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xb000, 0xb3ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xb400, 0xcfff, FORCEWAKE_GT), /*
|
|
0xb400 - 0xbf7f: gt
|
|
0xb480 - 0xbfff: reserved
|
|
0xc000 - 0xcfff: gt */
|
|
GEN_FW_RANGE(0xd000, 0xd7ff, 0),
|
|
GEN_FW_RANGE(0xd800, 0xd8ff, FORCEWAKE_RENDER),
|
|
GEN_FW_RANGE(0xd900, 0xdbff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0xdc00, 0xefff, FORCEWAKE_RENDER), /*
|
|
0xdc00 - 0xddff: render
|
|
0xde00 - 0xde7f: reserved
|
|
0xde80 - 0xe8ff: render
|
|
0xe900 - 0xefff: reserved */
|
|
GEN_FW_RANGE(0xf000, 0x147ff, FORCEWAKE_GT), /*
|
|
0xf000 - 0xffff: gt
|
|
0x10000 - 0x147ff: reserved */
|
|
GEN_FW_RANGE(0x14800, 0x1ffff, FORCEWAKE_RENDER), /*
|
|
0x14800 - 0x14fff: render
|
|
0x15000 - 0x16dff: reserved
|
|
0x16e00 - 0x1bfff: render
|
|
0x1c000 - 0x1ffff: reserved */
|
|
GEN_FW_RANGE(0x20000, 0x20fff, FORCEWAKE_MEDIA_VDBOX0),
|
|
GEN_FW_RANGE(0x21000, 0x21fff, FORCEWAKE_MEDIA_VDBOX2),
|
|
GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x24000, 0x2417f, 0), /*
|
|
0x24000 - 0x2407f: always on
|
|
0x24080 - 0x2417f: reserved */
|
|
GEN_FW_RANGE(0x24180, 0x249ff, FORCEWAKE_GT), /*
|
|
0x24180 - 0x241ff: gt
|
|
0x24200 - 0x249ff: reserved */
|
|
GEN_FW_RANGE(0x24a00, 0x251ff, FORCEWAKE_RENDER), /*
|
|
0x24a00 - 0x24a7f: render
|
|
0x24a80 - 0x251ff: reserved */
|
|
GEN_FW_RANGE(0x25200, 0x255ff, FORCEWAKE_GT), /*
|
|
0x25200 - 0x252ff: gt
|
|
0x25300 - 0x255ff: reserved */
|
|
GEN_FW_RANGE(0x25600, 0x2567f, FORCEWAKE_MEDIA_VDBOX0),
|
|
GEN_FW_RANGE(0x25680, 0x259ff, FORCEWAKE_MEDIA_VDBOX2), /*
|
|
0x25680 - 0x256ff: VD2
|
|
0x25700 - 0x259ff: reserved */
|
|
GEN_FW_RANGE(0x25a00, 0x25a7f, FORCEWAKE_MEDIA_VDBOX0),
|
|
GEN_FW_RANGE(0x25a80, 0x2ffff, FORCEWAKE_MEDIA_VDBOX2), /*
|
|
0x25a80 - 0x25aff: VD2
|
|
0x25b00 - 0x2ffff: reserved */
|
|
GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT),
|
|
GEN_FW_RANGE(0x40000, 0x1bffff, 0),
|
|
GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), /*
|
|
0x1c0000 - 0x1c2bff: VD0
|
|
0x1c2c00 - 0x1c2cff: reserved
|
|
0x1c2d00 - 0x1c2dff: VD0
|
|
0x1c2e00 - 0x1c3eff: reserved
|
|
0x1c3f00 - 0x1c3fff: VD0 */
|
|
GEN_FW_RANGE(0x1c4000, 0x1c7fff, 0),
|
|
GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /*
|
|
0x1c8000 - 0x1ca0ff: VE0
|
|
0x1ca100 - 0x1cbeff: reserved
|
|
0x1cbf00 - 0x1cbfff: VE0 */
|
|
GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX0), /*
|
|
0x1cc000 - 0x1ccfff: VD0
|
|
0x1cd000 - 0x1cffff: reserved */
|
|
GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), /*
|
|
0x1d0000 - 0x1d2bff: VD2
|
|
0x1d2c00 - 0x1d2cff: reserved
|
|
0x1d2d00 - 0x1d2dff: VD2
|
|
0x1d2e00 - 0x1d3eff: reserved
|
|
0x1d3f00 - 0x1d3fff: VD2 */
|
|
};
|
|
|
|
static void
|
|
ilk_dummy_write(struct intel_uncore *uncore)
|
|
{
|
|
/* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up
|
|
* the chip from rc6 before touching it for real. MI_MODE is masked,
|
|
* hence harmless to write 0 into. */
|
|
__raw_uncore_write32(uncore, MI_MODE, 0);
|
|
}
|
|
|
|
static void
|
|
__unclaimed_reg_debug(struct intel_uncore *uncore,
|
|
const i915_reg_t reg,
|
|
const bool read,
|
|
const bool before)
|
|
{
|
|
if (drm_WARN(&uncore->i915->drm,
|
|
check_for_unclaimed_mmio(uncore) && !before,
|
|
"Unclaimed %s register 0x%x\n",
|
|
read ? "read from" : "write to",
|
|
i915_mmio_reg_offset(reg)))
|
|
/* Only report the first N failures */
|
|
uncore->i915->params.mmio_debug--;
|
|
}
|
|
|
|
static inline void
|
|
unclaimed_reg_debug(struct intel_uncore *uncore,
|
|
const i915_reg_t reg,
|
|
const bool read,
|
|
const bool before)
|
|
{
|
|
if (likely(!uncore->i915->params.mmio_debug))
|
|
return;
|
|
|
|
/* interrupts are disabled and re-enabled around uncore->lock usage */
|
|
lockdep_assert_held(&uncore->lock);
|
|
|
|
if (before)
|
|
spin_lock(&uncore->debug->lock);
|
|
|
|
__unclaimed_reg_debug(uncore, reg, read, before);
|
|
|
|
if (!before)
|
|
spin_unlock(&uncore->debug->lock);
|
|
}
|
|
|
|
#define GEN2_READ_HEADER(x) \
|
|
u##x val = 0; \
|
|
assert_rpm_wakelock_held(uncore->rpm);
|
|
|
|
#define GEN2_READ_FOOTER \
|
|
trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
|
|
return val
|
|
|
|
#define __gen2_read(x) \
|
|
static u##x \
|
|
gen2_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
|
|
GEN2_READ_HEADER(x); \
|
|
val = __raw_uncore_read##x(uncore, reg); \
|
|
GEN2_READ_FOOTER; \
|
|
}
|
|
|
|
#define __gen5_read(x) \
|
|
static u##x \
|
|
gen5_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
|
|
GEN2_READ_HEADER(x); \
|
|
ilk_dummy_write(uncore); \
|
|
val = __raw_uncore_read##x(uncore, reg); \
|
|
GEN2_READ_FOOTER; \
|
|
}
|
|
|
|
__gen5_read(8)
|
|
__gen5_read(16)
|
|
__gen5_read(32)
|
|
__gen5_read(64)
|
|
__gen2_read(8)
|
|
__gen2_read(16)
|
|
__gen2_read(32)
|
|
__gen2_read(64)
|
|
|
|
#undef __gen5_read
|
|
#undef __gen2_read
|
|
|
|
#undef GEN2_READ_FOOTER
|
|
#undef GEN2_READ_HEADER
|
|
|
|
#define GEN6_READ_HEADER(x) \
|
|
u32 offset = i915_mmio_reg_offset(reg); \
|
|
unsigned long irqflags; \
|
|
u##x val = 0; \
|
|
assert_rpm_wakelock_held(uncore->rpm); \
|
|
spin_lock_irqsave(&uncore->lock, irqflags); \
|
|
unclaimed_reg_debug(uncore, reg, true, true)
|
|
|
|
#define GEN6_READ_FOOTER \
|
|
unclaimed_reg_debug(uncore, reg, true, false); \
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags); \
|
|
trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
|
|
return val
|
|
|
|
static noinline void ___force_wake_auto(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
struct intel_uncore_forcewake_domain *domain;
|
|
unsigned int tmp;
|
|
|
|
GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
|
|
|
|
for_each_fw_domain_masked(domain, fw_domains, uncore, tmp)
|
|
fw_domain_arm_timer(domain);
|
|
|
|
uncore->funcs.force_wake_get(uncore, fw_domains);
|
|
}
|
|
|
|
static inline void __force_wake_auto(struct intel_uncore *uncore,
|
|
enum forcewake_domains fw_domains)
|
|
{
|
|
GEM_BUG_ON(!fw_domains);
|
|
|
|
/* Turn on all requested but inactive supported forcewake domains. */
|
|
fw_domains &= uncore->fw_domains;
|
|
fw_domains &= ~uncore->fw_domains_active;
|
|
|
|
if (fw_domains)
|
|
___force_wake_auto(uncore, fw_domains);
|
|
}
|
|
|
|
#define __gen_read(func, x) \
|
|
static u##x \
|
|
func##_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
|
|
enum forcewake_domains fw_engine; \
|
|
GEN6_READ_HEADER(x); \
|
|
fw_engine = __##func##_reg_read_fw_domains(uncore, offset); \
|
|
if (fw_engine) \
|
|
__force_wake_auto(uncore, fw_engine); \
|
|
val = __raw_uncore_read##x(uncore, reg); \
|
|
GEN6_READ_FOOTER; \
|
|
}
|
|
|
|
#define __gen_reg_read_funcs(func) \
|
|
static enum forcewake_domains \
|
|
func##_reg_read_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) { \
|
|
return __##func##_reg_read_fw_domains(uncore, i915_mmio_reg_offset(reg)); \
|
|
} \
|
|
\
|
|
__gen_read(func, 8) \
|
|
__gen_read(func, 16) \
|
|
__gen_read(func, 32) \
|
|
__gen_read(func, 64)
|
|
|
|
__gen_reg_read_funcs(gen12_fwtable);
|
|
__gen_reg_read_funcs(gen11_fwtable);
|
|
__gen_reg_read_funcs(fwtable);
|
|
__gen_reg_read_funcs(gen6);
|
|
|
|
#undef __gen_reg_read_funcs
|
|
#undef GEN6_READ_FOOTER
|
|
#undef GEN6_READ_HEADER
|
|
|
|
#define GEN2_WRITE_HEADER \
|
|
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
|
|
assert_rpm_wakelock_held(uncore->rpm); \
|
|
|
|
#define GEN2_WRITE_FOOTER
|
|
|
|
#define __gen2_write(x) \
|
|
static void \
|
|
gen2_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
|
|
GEN2_WRITE_HEADER; \
|
|
__raw_uncore_write##x(uncore, reg, val); \
|
|
GEN2_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __gen5_write(x) \
|
|
static void \
|
|
gen5_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
|
|
GEN2_WRITE_HEADER; \
|
|
ilk_dummy_write(uncore); \
|
|
__raw_uncore_write##x(uncore, reg, val); \
|
|
GEN2_WRITE_FOOTER; \
|
|
}
|
|
|
|
__gen5_write(8)
|
|
__gen5_write(16)
|
|
__gen5_write(32)
|
|
__gen2_write(8)
|
|
__gen2_write(16)
|
|
__gen2_write(32)
|
|
|
|
#undef __gen5_write
|
|
#undef __gen2_write
|
|
|
|
#undef GEN2_WRITE_FOOTER
|
|
#undef GEN2_WRITE_HEADER
|
|
|
|
#define GEN6_WRITE_HEADER \
|
|
u32 offset = i915_mmio_reg_offset(reg); \
|
|
unsigned long irqflags; \
|
|
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
|
|
assert_rpm_wakelock_held(uncore->rpm); \
|
|
spin_lock_irqsave(&uncore->lock, irqflags); \
|
|
unclaimed_reg_debug(uncore, reg, false, true)
|
|
|
|
#define GEN6_WRITE_FOOTER \
|
|
unclaimed_reg_debug(uncore, reg, false, false); \
|
|
spin_unlock_irqrestore(&uncore->lock, irqflags)
|
|
|
|
#define __gen6_write(x) \
|
|
static void \
|
|
gen6_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
|
|
GEN6_WRITE_HEADER; \
|
|
if (NEEDS_FORCE_WAKE(offset)) \
|
|
__gen6_gt_wait_for_fifo(uncore); \
|
|
__raw_uncore_write##x(uncore, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
__gen6_write(8)
|
|
__gen6_write(16)
|
|
__gen6_write(32)
|
|
|
|
#define __gen_write(func, x) \
|
|
static void \
|
|
func##_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
|
|
enum forcewake_domains fw_engine; \
|
|
GEN6_WRITE_HEADER; \
|
|
fw_engine = __##func##_reg_write_fw_domains(uncore, offset); \
|
|
if (fw_engine) \
|
|
__force_wake_auto(uncore, fw_engine); \
|
|
__raw_uncore_write##x(uncore, reg, val); \
|
|
GEN6_WRITE_FOOTER; \
|
|
}
|
|
|
|
#define __gen_reg_write_funcs(func) \
|
|
static enum forcewake_domains \
|
|
func##_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) { \
|
|
return __##func##_reg_write_fw_domains(uncore, i915_mmio_reg_offset(reg)); \
|
|
} \
|
|
\
|
|
__gen_write(func, 8) \
|
|
__gen_write(func, 16) \
|
|
__gen_write(func, 32)
|
|
|
|
__gen_reg_write_funcs(gen12_fwtable);
|
|
__gen_reg_write_funcs(gen11_fwtable);
|
|
__gen_reg_write_funcs(fwtable);
|
|
__gen_reg_write_funcs(gen8);
|
|
|
|
#undef __gen_reg_write_funcs
|
|
#undef GEN6_WRITE_FOOTER
|
|
#undef GEN6_WRITE_HEADER
|
|
|
|
#define ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, x) \
|
|
do { \
|
|
(uncore)->funcs.mmio_writeb = x##_write8; \
|
|
(uncore)->funcs.mmio_writew = x##_write16; \
|
|
(uncore)->funcs.mmio_writel = x##_write32; \
|
|
} while (0)
|
|
|
|
#define ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x) \
|
|
do { \
|
|
(uncore)->funcs.mmio_readb = x##_read8; \
|
|
(uncore)->funcs.mmio_readw = x##_read16; \
|
|
(uncore)->funcs.mmio_readl = x##_read32; \
|
|
(uncore)->funcs.mmio_readq = x##_read64; \
|
|
} while (0)
|
|
|
|
#define ASSIGN_WRITE_MMIO_VFUNCS(uncore, x) \
|
|
do { \
|
|
ASSIGN_RAW_WRITE_MMIO_VFUNCS((uncore), x); \
|
|
(uncore)->funcs.write_fw_domains = x##_reg_write_fw_domains; \
|
|
} while (0)
|
|
|
|
#define ASSIGN_READ_MMIO_VFUNCS(uncore, x) \
|
|
do { \
|
|
ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x); \
|
|
(uncore)->funcs.read_fw_domains = x##_reg_read_fw_domains; \
|
|
} while (0)
|
|
|
|
static int __fw_domain_init(struct intel_uncore *uncore,
|
|
enum forcewake_domain_id domain_id,
|
|
i915_reg_t reg_set,
|
|
i915_reg_t reg_ack)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
|
|
GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT);
|
|
GEM_BUG_ON(uncore->fw_domain[domain_id]);
|
|
|
|
if (i915_inject_probe_failure(uncore->i915))
|
|
return -ENOMEM;
|
|
|
|
d = kzalloc(sizeof(*d), GFP_KERNEL);
|
|
if (!d)
|
|
return -ENOMEM;
|
|
|
|
drm_WARN_ON(&uncore->i915->drm, !i915_mmio_reg_valid(reg_set));
|
|
drm_WARN_ON(&uncore->i915->drm, !i915_mmio_reg_valid(reg_ack));
|
|
|
|
d->uncore = uncore;
|
|
d->wake_count = 0;
|
|
d->reg_set = uncore->regs + i915_mmio_reg_offset(reg_set);
|
|
d->reg_ack = uncore->regs + i915_mmio_reg_offset(reg_ack);
|
|
|
|
d->id = domain_id;
|
|
|
|
BUILD_BUG_ON(FORCEWAKE_RENDER != (1 << FW_DOMAIN_ID_RENDER));
|
|
BUILD_BUG_ON(FORCEWAKE_GT != (1 << FW_DOMAIN_ID_GT));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA != (1 << FW_DOMAIN_ID_MEDIA));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX0));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX1));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX2));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX3));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX0));
|
|
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX1));
|
|
|
|
d->mask = BIT(domain_id);
|
|
|
|
hrtimer_init(&d->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
|
|
d->timer.function = intel_uncore_fw_release_timer;
|
|
|
|
uncore->fw_domains |= BIT(domain_id);
|
|
|
|
fw_domain_reset(d);
|
|
|
|
uncore->fw_domain[domain_id] = d;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fw_domain_fini(struct intel_uncore *uncore,
|
|
enum forcewake_domain_id domain_id)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
|
|
GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT);
|
|
|
|
d = fetch_and_zero(&uncore->fw_domain[domain_id]);
|
|
if (!d)
|
|
return;
|
|
|
|
uncore->fw_domains &= ~BIT(domain_id);
|
|
drm_WARN_ON(&uncore->i915->drm, d->wake_count);
|
|
drm_WARN_ON(&uncore->i915->drm, hrtimer_cancel(&d->timer));
|
|
kfree(d);
|
|
}
|
|
|
|
static void intel_uncore_fw_domains_fini(struct intel_uncore *uncore)
|
|
{
|
|
struct intel_uncore_forcewake_domain *d;
|
|
int tmp;
|
|
|
|
for_each_fw_domain(d, uncore, tmp)
|
|
fw_domain_fini(uncore, d->id);
|
|
}
|
|
|
|
static int intel_uncore_fw_domains_init(struct intel_uncore *uncore)
|
|
{
|
|
struct drm_i915_private *i915 = uncore->i915;
|
|
int ret = 0;
|
|
|
|
GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
|
|
|
|
#define fw_domain_init(uncore__, id__, set__, ack__) \
|
|
(ret ?: (ret = __fw_domain_init((uncore__), (id__), (set__), (ack__))))
|
|
|
|
if (INTEL_GEN(i915) >= 11) {
|
|
/* we'll prune the domains of missing engines later */
|
|
intel_engine_mask_t emask = INTEL_INFO(i915)->platform_engine_mask;
|
|
int i;
|
|
|
|
uncore->funcs.force_wake_get = fw_domains_get_with_fallback;
|
|
uncore->funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_RENDER_GEN9,
|
|
FORCEWAKE_ACK_RENDER_GEN9);
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_GT,
|
|
FORCEWAKE_GT_GEN9,
|
|
FORCEWAKE_ACK_GT_GEN9);
|
|
|
|
for (i = 0; i < I915_MAX_VCS; i++) {
|
|
if (!__HAS_ENGINE(emask, _VCS(i)))
|
|
continue;
|
|
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VDBOX0 + i,
|
|
FORCEWAKE_MEDIA_VDBOX_GEN11(i),
|
|
FORCEWAKE_ACK_MEDIA_VDBOX_GEN11(i));
|
|
}
|
|
for (i = 0; i < I915_MAX_VECS; i++) {
|
|
if (!__HAS_ENGINE(emask, _VECS(i)))
|
|
continue;
|
|
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VEBOX0 + i,
|
|
FORCEWAKE_MEDIA_VEBOX_GEN11(i),
|
|
FORCEWAKE_ACK_MEDIA_VEBOX_GEN11(i));
|
|
}
|
|
} else if (IS_GEN_RANGE(i915, 9, 10)) {
|
|
uncore->funcs.force_wake_get = fw_domains_get_with_fallback;
|
|
uncore->funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_RENDER_GEN9,
|
|
FORCEWAKE_ACK_RENDER_GEN9);
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_GT,
|
|
FORCEWAKE_GT_GEN9,
|
|
FORCEWAKE_ACK_GT_GEN9);
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA,
|
|
FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9);
|
|
} else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
|
|
uncore->funcs.force_wake_get = fw_domains_get;
|
|
uncore->funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_VLV, FORCEWAKE_ACK_VLV);
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA,
|
|
FORCEWAKE_MEDIA_VLV, FORCEWAKE_ACK_MEDIA_VLV);
|
|
} else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
|
|
uncore->funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
uncore->funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_MT, FORCEWAKE_ACK_HSW);
|
|
} else if (IS_IVYBRIDGE(i915)) {
|
|
u32 ecobus;
|
|
|
|
/* IVB configs may use multi-threaded forcewake */
|
|
|
|
/* A small trick here - if the bios hasn't configured
|
|
* MT forcewake, and if the device is in RC6, then
|
|
* force_wake_mt_get will not wake the device and the
|
|
* ECOBUS read will return zero. Which will be
|
|
* (correctly) interpreted by the test below as MT
|
|
* forcewake being disabled.
|
|
*/
|
|
uncore->funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
uncore->funcs.force_wake_put = fw_domains_put;
|
|
|
|
/* We need to init first for ECOBUS access and then
|
|
* determine later if we want to reinit, in case of MT access is
|
|
* not working. In this stage we don't know which flavour this
|
|
* ivb is, so it is better to reset also the gen6 fw registers
|
|
* before the ecobus check.
|
|
*/
|
|
|
|
__raw_uncore_write32(uncore, FORCEWAKE, 0);
|
|
__raw_posting_read(uncore, ECOBUS);
|
|
|
|
ret = __fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE_MT, FORCEWAKE_MT_ACK);
|
|
if (ret)
|
|
goto out;
|
|
|
|
spin_lock_irq(&uncore->lock);
|
|
fw_domains_get_with_thread_status(uncore, FORCEWAKE_RENDER);
|
|
ecobus = __raw_uncore_read32(uncore, ECOBUS);
|
|
fw_domains_put(uncore, FORCEWAKE_RENDER);
|
|
spin_unlock_irq(&uncore->lock);
|
|
|
|
if (!(ecobus & FORCEWAKE_MT_ENABLE)) {
|
|
drm_info(&i915->drm, "No MT forcewake available on Ivybridge, this can result in issues\n");
|
|
drm_info(&i915->drm, "when using vblank-synced partial screen updates.\n");
|
|
fw_domain_fini(uncore, FW_DOMAIN_ID_RENDER);
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE, FORCEWAKE_ACK);
|
|
}
|
|
} else if (IS_GEN(i915, 6)) {
|
|
uncore->funcs.force_wake_get =
|
|
fw_domains_get_with_thread_status;
|
|
uncore->funcs.force_wake_put = fw_domains_put;
|
|
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
|
|
FORCEWAKE, FORCEWAKE_ACK);
|
|
}
|
|
|
|
#undef fw_domain_init
|
|
|
|
/* All future platforms are expected to require complex power gating */
|
|
drm_WARN_ON(&i915->drm, !ret && uncore->fw_domains == 0);
|
|
|
|
out:
|
|
if (ret)
|
|
intel_uncore_fw_domains_fini(uncore);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define ASSIGN_FW_DOMAINS_TABLE(uncore, d) \
|
|
{ \
|
|
(uncore)->fw_domains_table = \
|
|
(struct intel_forcewake_range *)(d); \
|
|
(uncore)->fw_domains_table_entries = ARRAY_SIZE((d)); \
|
|
}
|
|
|
|
static int i915_pmic_bus_access_notifier(struct notifier_block *nb,
|
|
unsigned long action, void *data)
|
|
{
|
|
struct intel_uncore *uncore = container_of(nb,
|
|
struct intel_uncore, pmic_bus_access_nb);
|
|
|
|
switch (action) {
|
|
case MBI_PMIC_BUS_ACCESS_BEGIN:
|
|
/*
|
|
* forcewake all now to make sure that we don't need to do a
|
|
* forcewake later which on systems where this notifier gets
|
|
* called requires the punit to access to the shared pmic i2c
|
|
* bus, which will be busy after this notification, leading to:
|
|
* "render: timed out waiting for forcewake ack request."
|
|
* errors.
|
|
*
|
|
* The notifier is unregistered during intel_runtime_suspend(),
|
|
* so it's ok to access the HW here without holding a RPM
|
|
* wake reference -> disable wakeref asserts for the time of
|
|
* the access.
|
|
*/
|
|
disable_rpm_wakeref_asserts(uncore->rpm);
|
|
intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
|
|
enable_rpm_wakeref_asserts(uncore->rpm);
|
|
break;
|
|
case MBI_PMIC_BUS_ACCESS_END:
|
|
intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
|
|
break;
|
|
}
|
|
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
static int uncore_mmio_setup(struct intel_uncore *uncore)
|
|
{
|
|
struct drm_i915_private *i915 = uncore->i915;
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
int mmio_bar;
|
|
int mmio_size;
|
|
|
|
mmio_bar = IS_GEN(i915, 2) ? 1 : 0;
|
|
/*
|
|
* Before gen4, the registers and the GTT are behind different BARs.
|
|
* However, from gen4 onwards, the registers and the GTT are shared
|
|
* in the same BAR, so we want to restrict this ioremap from
|
|
* clobbering the GTT which we want ioremap_wc instead. Fortunately,
|
|
* the register BAR remains the same size for all the earlier
|
|
* generations up to Ironlake.
|
|
* For dgfx chips register range is expanded to 4MB.
|
|
*/
|
|
if (INTEL_GEN(i915) < 5)
|
|
mmio_size = 512 * 1024;
|
|
else if (IS_DGFX(i915))
|
|
mmio_size = 4 * 1024 * 1024;
|
|
else
|
|
mmio_size = 2 * 1024 * 1024;
|
|
|
|
uncore->regs = pci_iomap(pdev, mmio_bar, mmio_size);
|
|
if (uncore->regs == NULL) {
|
|
drm_err(&i915->drm, "failed to map registers\n");
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void uncore_mmio_cleanup(struct intel_uncore *uncore)
|
|
{
|
|
struct pci_dev *pdev = uncore->i915->drm.pdev;
|
|
|
|
pci_iounmap(pdev, uncore->regs);
|
|
}
|
|
|
|
void intel_uncore_init_early(struct intel_uncore *uncore,
|
|
struct drm_i915_private *i915)
|
|
{
|
|
spin_lock_init(&uncore->lock);
|
|
uncore->i915 = i915;
|
|
uncore->rpm = &i915->runtime_pm;
|
|
uncore->debug = &i915->mmio_debug;
|
|
}
|
|
|
|
static void uncore_raw_init(struct intel_uncore *uncore)
|
|
{
|
|
GEM_BUG_ON(intel_uncore_has_forcewake(uncore));
|
|
|
|
if (IS_GEN(uncore->i915, 5)) {
|
|
ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen5);
|
|
ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen5);
|
|
} else {
|
|
ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen2);
|
|
ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen2);
|
|
}
|
|
}
|
|
|
|
static int uncore_forcewake_init(struct intel_uncore *uncore)
|
|
{
|
|
struct drm_i915_private *i915 = uncore->i915;
|
|
int ret;
|
|
|
|
GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
|
|
|
|
ret = intel_uncore_fw_domains_init(uncore);
|
|
if (ret)
|
|
return ret;
|
|
forcewake_early_sanitize(uncore, 0);
|
|
|
|
if (IS_GEN_RANGE(i915, 6, 7)) {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6);
|
|
|
|
if (IS_VALLEYVIEW(i915)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(uncore, __vlv_fw_ranges);
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
|
|
} else {
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, gen6);
|
|
}
|
|
} else if (IS_GEN(i915, 8)) {
|
|
if (IS_CHERRYVIEW(i915)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(uncore, __chv_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
|
|
} else {
|
|
ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen8);
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, gen6);
|
|
}
|
|
} else if (IS_GEN_RANGE(i915, 9, 10)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen9_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
|
|
} else if (IS_GEN(i915, 11)) {
|
|
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen11_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen11_fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, gen11_fwtable);
|
|
} else {
|
|
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen12_fw_ranges);
|
|
ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen12_fwtable);
|
|
ASSIGN_READ_MMIO_VFUNCS(uncore, gen12_fwtable);
|
|
}
|
|
|
|
uncore->pmic_bus_access_nb.notifier_call = i915_pmic_bus_access_notifier;
|
|
iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int intel_uncore_init_mmio(struct intel_uncore *uncore)
|
|
{
|
|
struct drm_i915_private *i915 = uncore->i915;
|
|
int ret;
|
|
|
|
ret = uncore_mmio_setup(uncore);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (INTEL_GEN(i915) > 5 && !intel_vgpu_active(i915))
|
|
uncore->flags |= UNCORE_HAS_FORCEWAKE;
|
|
|
|
if (!intel_uncore_has_forcewake(uncore)) {
|
|
uncore_raw_init(uncore);
|
|
} else {
|
|
ret = uncore_forcewake_init(uncore);
|
|
if (ret)
|
|
goto out_mmio_cleanup;
|
|
}
|
|
|
|
/* make sure fw funcs are set if and only if we have fw*/
|
|
GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.force_wake_get);
|
|
GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.force_wake_put);
|
|
GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.read_fw_domains);
|
|
GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.write_fw_domains);
|
|
|
|
if (HAS_FPGA_DBG_UNCLAIMED(i915))
|
|
uncore->flags |= UNCORE_HAS_FPGA_DBG_UNCLAIMED;
|
|
|
|
if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
|
|
uncore->flags |= UNCORE_HAS_DBG_UNCLAIMED;
|
|
|
|
if (IS_GEN_RANGE(i915, 6, 7))
|
|
uncore->flags |= UNCORE_HAS_FIFO;
|
|
|
|
/* clear out unclaimed reg detection bit */
|
|
if (intel_uncore_unclaimed_mmio(uncore))
|
|
drm_dbg(&i915->drm, "unclaimed mmio detected on uncore init, clearing\n");
|
|
|
|
return 0;
|
|
|
|
out_mmio_cleanup:
|
|
uncore_mmio_cleanup(uncore);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* We might have detected that some engines are fused off after we initialized
|
|
* the forcewake domains. Prune them, to make sure they only reference existing
|
|
* engines.
|
|
*/
|
|
void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore,
|
|
struct intel_gt *gt)
|
|
{
|
|
enum forcewake_domains fw_domains = uncore->fw_domains;
|
|
enum forcewake_domain_id domain_id;
|
|
int i;
|
|
|
|
if (!intel_uncore_has_forcewake(uncore) || INTEL_GEN(uncore->i915) < 11)
|
|
return;
|
|
|
|
for (i = 0; i < I915_MAX_VCS; i++) {
|
|
domain_id = FW_DOMAIN_ID_MEDIA_VDBOX0 + i;
|
|
|
|
if (HAS_ENGINE(gt, _VCS(i)))
|
|
continue;
|
|
|
|
if (fw_domains & BIT(domain_id))
|
|
fw_domain_fini(uncore, domain_id);
|
|
}
|
|
|
|
for (i = 0; i < I915_MAX_VECS; i++) {
|
|
domain_id = FW_DOMAIN_ID_MEDIA_VEBOX0 + i;
|
|
|
|
if (HAS_ENGINE(gt, _VECS(i)))
|
|
continue;
|
|
|
|
if (fw_domains & BIT(domain_id))
|
|
fw_domain_fini(uncore, domain_id);
|
|
}
|
|
}
|
|
|
|
void intel_uncore_fini_mmio(struct intel_uncore *uncore)
|
|
{
|
|
if (intel_uncore_has_forcewake(uncore)) {
|
|
iosf_mbi_punit_acquire();
|
|
iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
|
|
&uncore->pmic_bus_access_nb);
|
|
intel_uncore_forcewake_reset(uncore);
|
|
intel_uncore_fw_domains_fini(uncore);
|
|
iosf_mbi_punit_release();
|
|
}
|
|
|
|
uncore_mmio_cleanup(uncore);
|
|
}
|
|
|
|
static const struct reg_whitelist {
|
|
i915_reg_t offset_ldw;
|
|
i915_reg_t offset_udw;
|
|
u16 gen_mask;
|
|
u8 size;
|
|
} reg_read_whitelist[] = { {
|
|
.offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
|
|
.offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
|
|
.gen_mask = INTEL_GEN_MASK(4, 12),
|
|
.size = 8
|
|
} };
|
|
|
|
int i915_reg_read_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file)
|
|
{
|
|
struct drm_i915_private *i915 = to_i915(dev);
|
|
struct intel_uncore *uncore = &i915->uncore;
|
|
struct drm_i915_reg_read *reg = data;
|
|
struct reg_whitelist const *entry;
|
|
intel_wakeref_t wakeref;
|
|
unsigned int flags;
|
|
int remain;
|
|
int ret = 0;
|
|
|
|
entry = reg_read_whitelist;
|
|
remain = ARRAY_SIZE(reg_read_whitelist);
|
|
while (remain) {
|
|
u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
|
|
|
|
GEM_BUG_ON(!is_power_of_2(entry->size));
|
|
GEM_BUG_ON(entry->size > 8);
|
|
GEM_BUG_ON(entry_offset & (entry->size - 1));
|
|
|
|
if (INTEL_INFO(i915)->gen_mask & entry->gen_mask &&
|
|
entry_offset == (reg->offset & -entry->size))
|
|
break;
|
|
entry++;
|
|
remain--;
|
|
}
|
|
|
|
if (!remain)
|
|
return -EINVAL;
|
|
|
|
flags = reg->offset & (entry->size - 1);
|
|
|
|
with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
|
|
if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
|
|
reg->val = intel_uncore_read64_2x32(uncore,
|
|
entry->offset_ldw,
|
|
entry->offset_udw);
|
|
else if (entry->size == 8 && flags == 0)
|
|
reg->val = intel_uncore_read64(uncore,
|
|
entry->offset_ldw);
|
|
else if (entry->size == 4 && flags == 0)
|
|
reg->val = intel_uncore_read(uncore, entry->offset_ldw);
|
|
else if (entry->size == 2 && flags == 0)
|
|
reg->val = intel_uncore_read16(uncore,
|
|
entry->offset_ldw);
|
|
else if (entry->size == 1 && flags == 0)
|
|
reg->val = intel_uncore_read8(uncore,
|
|
entry->offset_ldw);
|
|
else
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* __intel_wait_for_register_fw - wait until register matches expected state
|
|
* @uncore: the struct intel_uncore
|
|
* @reg: the register to read
|
|
* @mask: mask to apply to register value
|
|
* @value: expected value
|
|
* @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
|
|
* @slow_timeout_ms: slow timeout in millisecond
|
|
* @out_value: optional placeholder to hold registry value
|
|
*
|
|
* This routine waits until the target register @reg contains the expected
|
|
* @value after applying the @mask, i.e. it waits until ::
|
|
*
|
|
* (I915_READ_FW(reg) & mask) == value
|
|
*
|
|
* Otherwise, the wait will timeout after @slow_timeout_ms milliseconds.
|
|
* For atomic context @slow_timeout_ms must be zero and @fast_timeout_us
|
|
* must be not larger than 20,0000 microseconds.
|
|
*
|
|
* Note that this routine assumes the caller holds forcewake asserted, it is
|
|
* not suitable for very long waits. See intel_wait_for_register() if you
|
|
* wish to wait without holding forcewake for the duration (i.e. you expect
|
|
* the wait to be slow).
|
|
*
|
|
* Return: 0 if the register matches the desired condition, or -ETIMEDOUT.
|
|
*/
|
|
int __intel_wait_for_register_fw(struct intel_uncore *uncore,
|
|
i915_reg_t reg,
|
|
u32 mask,
|
|
u32 value,
|
|
unsigned int fast_timeout_us,
|
|
unsigned int slow_timeout_ms,
|
|
u32 *out_value)
|
|
{
|
|
u32 reg_value = 0;
|
|
#define done (((reg_value = intel_uncore_read_fw(uncore, reg)) & mask) == value)
|
|
int ret;
|
|
|
|
/* Catch any overuse of this function */
|
|
might_sleep_if(slow_timeout_ms);
|
|
GEM_BUG_ON(fast_timeout_us > 20000);
|
|
GEM_BUG_ON(!fast_timeout_us && !slow_timeout_ms);
|
|
|
|
ret = -ETIMEDOUT;
|
|
if (fast_timeout_us && fast_timeout_us <= 20000)
|
|
ret = _wait_for_atomic(done, fast_timeout_us, 0);
|
|
if (ret && slow_timeout_ms)
|
|
ret = wait_for(done, slow_timeout_ms);
|
|
|
|
if (out_value)
|
|
*out_value = reg_value;
|
|
|
|
return ret;
|
|
#undef done
|
|
}
|
|
|
|
/**
|
|
* __intel_wait_for_register - wait until register matches expected state
|
|
* @uncore: the struct intel_uncore
|
|
* @reg: the register to read
|
|
* @mask: mask to apply to register value
|
|
* @value: expected value
|
|
* @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
|
|
* @slow_timeout_ms: slow timeout in millisecond
|
|
* @out_value: optional placeholder to hold registry value
|
|
*
|
|
* This routine waits until the target register @reg contains the expected
|
|
* @value after applying the @mask, i.e. it waits until ::
|
|
*
|
|
* (I915_READ(reg) & mask) == value
|
|
*
|
|
* Otherwise, the wait will timeout after @timeout_ms milliseconds.
|
|
*
|
|
* Return: 0 if the register matches the desired condition, or -ETIMEDOUT.
|
|
*/
|
|
int __intel_wait_for_register(struct intel_uncore *uncore,
|
|
i915_reg_t reg,
|
|
u32 mask,
|
|
u32 value,
|
|
unsigned int fast_timeout_us,
|
|
unsigned int slow_timeout_ms,
|
|
u32 *out_value)
|
|
{
|
|
unsigned fw =
|
|
intel_uncore_forcewake_for_reg(uncore, reg, FW_REG_READ);
|
|
u32 reg_value;
|
|
int ret;
|
|
|
|
might_sleep_if(slow_timeout_ms);
|
|
|
|
spin_lock_irq(&uncore->lock);
|
|
intel_uncore_forcewake_get__locked(uncore, fw);
|
|
|
|
ret = __intel_wait_for_register_fw(uncore,
|
|
reg, mask, value,
|
|
fast_timeout_us, 0, ®_value);
|
|
|
|
intel_uncore_forcewake_put__locked(uncore, fw);
|
|
spin_unlock_irq(&uncore->lock);
|
|
|
|
if (ret && slow_timeout_ms)
|
|
ret = __wait_for(reg_value = intel_uncore_read_notrace(uncore,
|
|
reg),
|
|
(reg_value & mask) == value,
|
|
slow_timeout_ms * 1000, 10, 1000);
|
|
|
|
/* just trace the final value */
|
|
trace_i915_reg_rw(false, reg, reg_value, sizeof(reg_value), true);
|
|
|
|
if (out_value)
|
|
*out_value = reg_value;
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore)
|
|
{
|
|
bool ret;
|
|
|
|
spin_lock_irq(&uncore->debug->lock);
|
|
ret = check_for_unclaimed_mmio(uncore);
|
|
spin_unlock_irq(&uncore->debug->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool
|
|
intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore)
|
|
{
|
|
bool ret = false;
|
|
|
|
spin_lock_irq(&uncore->debug->lock);
|
|
|
|
if (unlikely(uncore->debug->unclaimed_mmio_check <= 0))
|
|
goto out;
|
|
|
|
if (unlikely(check_for_unclaimed_mmio(uncore))) {
|
|
if (!uncore->i915->params.mmio_debug) {
|
|
drm_dbg(&uncore->i915->drm,
|
|
"Unclaimed register detected, "
|
|
"enabling oneshot unclaimed register reporting. "
|
|
"Please use i915.mmio_debug=N for more information.\n");
|
|
uncore->i915->params.mmio_debug++;
|
|
}
|
|
uncore->debug->unclaimed_mmio_check--;
|
|
ret = true;
|
|
}
|
|
|
|
out:
|
|
spin_unlock_irq(&uncore->debug->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* intel_uncore_forcewake_for_reg - which forcewake domains are needed to access
|
|
* a register
|
|
* @uncore: pointer to struct intel_uncore
|
|
* @reg: register in question
|
|
* @op: operation bitmask of FW_REG_READ and/or FW_REG_WRITE
|
|
*
|
|
* Returns a set of forcewake domains required to be taken with for example
|
|
* intel_uncore_forcewake_get for the specified register to be accessible in the
|
|
* specified mode (read, write or read/write) with raw mmio accessors.
|
|
*
|
|
* NOTE: On Gen6 and Gen7 write forcewake domain (FORCEWAKE_RENDER) requires the
|
|
* callers to do FIFO management on their own or risk losing writes.
|
|
*/
|
|
enum forcewake_domains
|
|
intel_uncore_forcewake_for_reg(struct intel_uncore *uncore,
|
|
i915_reg_t reg, unsigned int op)
|
|
{
|
|
enum forcewake_domains fw_domains = 0;
|
|
|
|
drm_WARN_ON(&uncore->i915->drm, !op);
|
|
|
|
if (!intel_uncore_has_forcewake(uncore))
|
|
return 0;
|
|
|
|
if (op & FW_REG_READ)
|
|
fw_domains = uncore->funcs.read_fw_domains(uncore, reg);
|
|
|
|
if (op & FW_REG_WRITE)
|
|
fw_domains |= uncore->funcs.write_fw_domains(uncore, reg);
|
|
|
|
drm_WARN_ON(&uncore->i915->drm, fw_domains & ~uncore->fw_domains);
|
|
|
|
return fw_domains;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
|
|
#include "selftests/mock_uncore.c"
|
|
#include "selftests/intel_uncore.c"
|
|
#endif
|