Google Git
Sign in
android-kvm / linux / 2b5d5f23d4056543757919bb2db06d0829835f7e / . / drivers / gpu / drm / i915 / intel_uncore.c
blob: 6aa179a3e92aac46f805461ed6eac3ce271049b8 [file] [log] [blame]
/*
* 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 <drm/drm_managed.h>
#include <linux/pm_runtime.h>
#include "gt/intel_gt.h"
#include "gt/intel_engine_regs.h"
#include "gt/intel_gt_regs.h"
#include "i915_drv.h"
#include "i915_iosf_mbi.h"
#include "i915_reg.h"
#include "i915_trace.h"
#include "i915_vgpu.h"
#define FORCEWAKE_ACK_TIMEOUT_MS 50
#define GT_FIFO_TIMEOUT_MS 10
#define __raw_posting_read(...) ((void)__raw_uncore_read32(__VA_ARGS__))
static void
fw_domains_get(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
{
uncore->fw_get_funcs->force_wake_get(uncore, fw_domains);
}
void
intel_uncore_mmio_debug_init_early(struct drm_i915_private *i915)
{
spin_lock_init(&i915->mmio_debug.lock);
i915->mmio_debug.unclaimed_mmio_check = 1;
i915->uncore.debug = &i915->mmio_debug;
}
static void mmio_debug_suspend(struct intel_uncore *uncore)
{
if (!uncore->debug)
return;
spin_lock(&uncore->debug->lock);
/* Save and disable mmio debugging for the user bypass */
if (!uncore->debug->suspend_count++) {
uncore->debug->saved_mmio_check = uncore->debug->unclaimed_mmio_check;
uncore->debug->unclaimed_mmio_check = 0;
}
spin_unlock(&uncore->debug->lock);
}
static bool check_for_unclaimed_mmio(struct intel_uncore *uncore);
static void mmio_debug_resume(struct intel_uncore *uncore)
{
if (!uncore->debug)
return;
spin_lock(&uncore->debug->lock);
if (!--uncore->debug->suspend_count)
uncore->debug->unclaimed_mmio_check = uncore->debug->saved_mmio_check;
if (check_for_unclaimed_mmio(uncore))
drm_info(&uncore->i915->drm,
"Invalid mmio detected during user access\n");
spin_unlock(&uncore->debug->lock);
}
static const char * const forcewake_domain_names[] = {
"render",
"gt",
"media",
"vdbox0",
"vdbox1",
"vdbox2",
"vdbox3",
"vdbox4",
"vdbox5",
"vdbox6",
"vdbox7",
"vebox0",
"vebox1",
"vebox2",
"vebox3",
"gsc",
};
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 */
if (GRAPHICS_VER(d->uncore->i915) >= 12)
fw_clear(d, 0xefff);
else
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))
return;
if (fw_ack(d) == ~0) {
drm_err(&d->uncore->i915->drm,
"%s: MMIO unreliable (forcewake register returns 0xFFFFFFFF)!\n",
intel_uncore_forcewake_domain_to_str(d->id));
intel_gt_set_wedged_async(d->uncore->gt);
} else {
drm_err(&d->uncore->i915->drm,
"%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_dbg(&d->uncore->i915->drm,
"%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_err(&d->uncore->i915->drm,
"%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_normal(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_normal(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)
fw_domains_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)
fw_domains_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;
/*
* Bugs in PCI programming (or failing hardware) can occasionally cause
* us to lose access to the MMIO BAR. When this happens, register
* reads will come back with 0xFFFFFFFF for every register and things
* go bad very quickly. Let's try to detect that special case and at
* least try to print a more informative message about what has
* happened.
*
* During normal operation the FPGA_DBG register has several unused
* bits that will always read back as 0's so we can use them as canaries
* to recognize when MMIO accesses are just busted.
*/
if (unlikely(dbg == ~0))
drm_err(&uncore->i915->drm,
"Lost access to MMIO BAR; all registers now read back as 0xFFFFFFFF!\n");
__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);
fw_domains_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)
fw_domains_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->fw_get_funcs)
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);
mmio_debug_suspend(uncore);
}
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) {
mmio_debug_resume(uncore);
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->fw_get_funcs)
return;
__intel_uncore_forcewake_get(uncore, fw_domains);
}
static void __intel_uncore_forcewake_put(struct intel_uncore *uncore,
enum forcewake_domains fw_domains,
bool delayed)
{
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;
}
if (delayed &&
!(domain->uncore->fw_domains_timer & domain->mask))
fw_domain_arm_timer(domain);
else
fw_domains_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->fw_get_funcs)
return;
spin_lock_irqsave(&uncore->lock, irqflags);
__intel_uncore_forcewake_put(uncore, fw_domains, false);
spin_unlock_irqrestore(&uncore->lock, irqflags);
}
void intel_uncore_forcewake_put_delayed(struct intel_uncore *uncore,
enum forcewake_domains fw_domains)
{
unsigned long irqflags;
if (!uncore->fw_get_funcs)
return;
spin_lock_irqsave(&uncore->lock, irqflags);
__intel_uncore_forcewake_put(uncore, fw_domains, true);
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->fw_get_funcs)
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 - release forcewake domain references
* @uncore: the intel_uncore structure
* @fw_domains: forcewake domains to put references
*
* 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->fw_get_funcs)
return;
__intel_uncore_forcewake_put(uncore, fw_domains, false);
}
void assert_forcewakes_inactive(struct intel_uncore *uncore)
{
if (!uncore->fw_get_funcs)
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->fw_get_funcs)
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. The second range includes
* media domains (and the GSC starting from Xe_LPM+)
*/
#define NEEDS_FORCE_WAKE(reg) ({ \
u32 __reg = (reg); \
__reg < 0x40000 || __reg >= 0x116000; \
})
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;
if (IS_GSI_REG(offset))
offset += uncore->gsi_offset;
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;
}
/*
* Shadowed register tables describe special register ranges that i915 is
* allowed to write to without acquiring forcewake. If these registers' power
* wells are down, the hardware will save values written by i915 to a shadow
* copy and automatically transfer them into the real register the next time
* the power well is woken up. Shadowing only applies to writes; forcewake
* must still be acquired when reading from registers in these ranges.
*
* The documentation for shadowed registers is somewhat spotty on older
* platforms. However missing registers from these lists is non-fatal; it just
* means we'll wake up the hardware for some register accesses where we didn't
* really need to.
*
* The ranges listed in these tables must be sorted by offset.
*
* When adding new tables here, please also add them to
* intel_shadow_table_check() in selftests/intel_uncore.c so that they will be
* scanned for obvious mistakes or typos by the selftests.
*/
static const struct i915_range gen8_shadowed_regs[] = {
{ .start = 0x2030, .end = 0x2030 },
{ .start = 0xA008, .end = 0xA00C },
{ .start = 0x12030, .end = 0x12030 },
{ .start = 0x1a030, .end = 0x1a030 },
{ .start = 0x22030, .end = 0x22030 },
};
static const struct i915_range gen11_shadowed_regs[] = {
{ .start = 0x2030, .end = 0x2030 },
{ .start = 0x2550, .end = 0x2550 },
{ .start = 0xA008, .end = 0xA00C },
{ .start = 0x22030, .end = 0x22030 },
{ .start = 0x22230, .end = 0x22230 },
{ .start = 0x22510, .end = 0x22550 },
{ .start = 0x1C0030, .end = 0x1C0030 },
{ .start = 0x1C0230, .end = 0x1C0230 },
{ .start = 0x1C0510, .end = 0x1C0550 },
{ .start = 0x1C4030, .end = 0x1C4030 },
{ .start = 0x1C4230, .end = 0x1C4230 },
{ .start = 0x1C4510, .end = 0x1C4550 },
{ .start = 0x1C8030, .end = 0x1C8030 },
{ .start = 0x1C8230, .end = 0x1C8230 },
{ .start = 0x1C8510, .end = 0x1C8550 },
{ .start = 0x1D0030, .end = 0x1D0030 },
{ .start = 0x1D0230, .end = 0x1D0230 },
{ .start = 0x1D0510, .end = 0x1D0550 },
{ .start = 0x1D4030, .end = 0x1D4030 },
{ .start = 0x1D4230, .end = 0x1D4230 },
{ .start = 0x1D4510, .end = 0x1D4550 },
{ .start = 0x1D8030, .end = 0x1D8030 },
{ .start = 0x1D8230, .end = 0x1D8230 },
{ .start = 0x1D8510, .end = 0x1D8550 },
};
static const struct i915_range gen12_shadowed_regs[] = {
{ .start = 0x2030, .end = 0x2030 },
{ .start = 0x2510, .end = 0x2550 },
{ .start = 0xA008, .end = 0xA00C },
{ .start = 0xA188, .end = 0xA188 },
{ .start = 0xA278, .end = 0xA278 },
{ .start = 0xA540, .end = 0xA56C },
{ .start = 0xC4C8, .end = 0xC4C8 },
{ .start = 0xC4D4, .end = 0xC4D4 },
{ .start = 0xC600, .end = 0xC600 },
{ .start = 0x22030, .end = 0x22030 },
{ .start = 0x22510, .end = 0x22550 },
{ .start = 0x1C0030, .end = 0x1C0030 },
{ .start = 0x1C0510, .end = 0x1C0550 },
{ .start = 0x1C4030, .end = 0x1C4030 },
{ .start = 0x1C4510, .end = 0x1C4550 },
{ .start = 0x1C8030, .end = 0x1C8030 },
{ .start = 0x1C8510, .end = 0x1C8550 },
{ .start = 0x1D0030, .end = 0x1D0030 },
{ .start = 0x1D0510, .end = 0x1D0550 },
{ .start = 0x1D4030, .end = 0x1D4030 },
{ .start = 0x1D4510, .end = 0x1D4550 },
{ .start = 0x1D8030, .end = 0x1D8030 },
{ .start = 0x1D8510, .end = 0x1D8550 },
/*
* The rest of these ranges are specific to Xe_HP and beyond, but
* are reserved/unused ranges on earlier gen12 platforms, so they can
* be safely added to the gen12 table.
*/
{ .start = 0x1E0030, .end = 0x1E0030 },
{ .start = 0x1E0510, .end = 0x1E0550 },
{ .start = 0x1E4030, .end = 0x1E4030 },
{ .start = 0x1E4510, .end = 0x1E4550 },
{ .start = 0x1E8030, .end = 0x1E8030 },
{ .start = 0x1E8510, .end = 0x1E8550 },
{ .start = 0x1F0030, .end = 0x1F0030 },
{ .start = 0x1F0510, .end = 0x1F0550 },
{ .start = 0x1F4030, .end = 0x1F4030 },
{ .start = 0x1F4510, .end = 0x1F4550 },
{ .start = 0x1F8030, .end = 0x1F8030 },
{ .start = 0x1F8510, .end = 0x1F8550 },
};
static const struct i915_range dg2_shadowed_regs[] = {
{ .start = 0x2030, .end = 0x2030 },
{ .start = 0x2510, .end = 0x2550 },
{ .start = 0xA008, .end = 0xA00C },
{ .start = 0xA188, .end = 0xA188 },
{ .start = 0xA278, .end = 0xA278 },
{ .start = 0xA540, .end = 0xA56C },
{ .start = 0xC4C8, .end = 0xC4C8 },
{ .start = 0xC4E0, .end = 0xC4E0 },
{ .start = 0xC600, .end = 0xC600 },
{ .start = 0xC658, .end = 0xC658 },
{ .start = 0x22030, .end = 0x22030 },
{ .start = 0x22510, .end = 0x22550 },
{ .start = 0x1C0030, .end = 0x1C0030 },
{ .start = 0x1C0510, .end = 0x1C0550 },
{ .start = 0x1C4030, .end = 0x1C4030 },
{ .start = 0x1C4510, .end = 0x1C4550 },
{ .start = 0x1C8030, .end = 0x1C8030 },
{ .start = 0x1C8510, .end = 0x1C8550 },
{ .start = 0x1D0030, .end = 0x1D0030 },
{ .start = 0x1D0510, .end = 0x1D0550 },
{ .start = 0x1D4030, .end = 0x1D4030 },
{ .start = 0x1D4510, .end = 0x1D4550 },
{ .start = 0x1D8030, .end = 0x1D8030 },
{ .start = 0x1D8510, .end = 0x1D8550 },
{ .start = 0x1E0030, .end = 0x1E0030 },
{ .start = 0x1E0510, .end = 0x1E0550 },
{ .start = 0x1E4030, .end = 0x1E4030 },
{ .start = 0x1E4510, .end = 0x1E4550 },
{ .start = 0x1E8030, .end = 0x1E8030 },
{ .start = 0x1E8510, .end = 0x1E8550 },
{ .start = 0x1F0030, .end = 0x1F0030 },
{ .start = 0x1F0510, .end = 0x1F0550 },
{ .start = 0x1F4030, .end = 0x1F4030 },
{ .start = 0x1F4510, .end = 0x1F4550 },
{ .start = 0x1F8030, .end = 0x1F8030 },
{ .start = 0x1F8510, .end = 0x1F8550 },
};
static const struct i915_range mtl_shadowed_regs[] = {
{ .start = 0x2030, .end = 0x2030 },
{ .start = 0x2510, .end = 0x2550 },
{ .start = 0xA008, .end = 0xA00C },
{ .start = 0xA188, .end = 0xA188 },
{ .start = 0xA278, .end = 0xA278 },
{ .start = 0xA540, .end = 0xA56C },
{ .start = 0xC050, .end = 0xC050 },
{ .start = 0xC340, .end = 0xC340 },
{ .start = 0xC4C8, .end = 0xC4C8 },
{ .start = 0xC4E0, .end = 0xC4E0 },
{ .start = 0xC600, .end = 0xC600 },
{ .start = 0xC658, .end = 0xC658 },
{ .start = 0xCFD4, .end = 0xCFDC },
{ .start = 0x22030, .end = 0x22030 },
{ .start = 0x22510, .end = 0x22550 },
};
static const struct i915_range xelpmp_shadowed_regs[] = {
{ .start = 0x1C0030, .end = 0x1C0030 },
{ .start = 0x1C0510, .end = 0x1C0550 },
{ .start = 0x1C8030, .end = 0x1C8030 },
{ .start = 0x1C8510, .end = 0x1C8550 },
{ .start = 0x1D0030, .end = 0x1D0030 },
{ .start = 0x1D0510, .end = 0x1D0550 },
{ .start = 0x38A008, .end = 0x38A00C },
{ .start = 0x38A188, .end = 0x38A188 },
{ .start = 0x38A278, .end = 0x38A278 },
{ .start = 0x38A540, .end = 0x38A56C },
{ .start = 0x38A618, .end = 0x38A618 },
{ .start = 0x38C050, .end = 0x38C050 },
{ .start = 0x38C340, .end = 0x38C340 },
{ .start = 0x38C4C8, .end = 0x38C4C8 },
{ .start = 0x38C4E0, .end = 0x38C4E4 },
{ .start = 0x38C600, .end = 0x38C600 },
{ .start = 0x38C658, .end = 0x38C658 },
{ .start = 0x38CFD4, .end = 0x38CFDC },
};
static int mmio_range_cmp(u32 key, const struct i915_range *range)
{
if (key < range->start)
return -1;
else if (key > range->end)
return 1;
else
return 0;
}
static bool is_shadowed(struct intel_uncore *uncore, u32 offset)
{
if (drm_WARN_ON(&uncore->i915->drm, !uncore->shadowed_reg_table))
return false;
if (IS_GSI_REG(offset))
offset += uncore->gsi_offset;
return BSEARCH(offset,
uncore->shadowed_reg_table,
uncore->shadowed_reg_table_entries,
mmio_range_cmp);
}
static enum forcewake_domains
gen6_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg)
{
return FORCEWAKE_RENDER;
}
#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 __fwtable_reg_write_fw_domains(uncore, offset) \
({ \
enum forcewake_domains __fwd = 0; \
const u32 __offset = (offset); \
if (NEEDS_FORCE_WAKE((__offset)) && !is_shadowed(uncore, __offset)) \
__fwd = find_fw_domain(uncore, __offset); \
__fwd; \
})
#define GEN_FW_RANGE(s, e, d) \
{ .start = (s), .end = (e), .domains = (d) }
/*
* All platforms' forcewake tables below must be sorted by offset ranges.
* Furthermore, new forcewake tables added should be "watertight" and have
* no gaps between ranges.
*
* When there are multiple consecutive ranges listed in the bspec with
* the same forcewake domain, it is customary to combine them into a single
* row in the tables below to keep the tables small and lookups fast.
* Likewise, reserved/unused ranges may be combined with the preceding and/or
* following ranges since the driver will never be making MMIO accesses in
* those ranges.
*
* For example, if the bspec were to list:
*
* ...
* 0x1000 - 0x1fff: GT
* 0x2000 - 0x2cff: GT
* 0x2d00 - 0x2fff: unused/reserved
* 0x3000 - 0xffff: GT
* ...
*
* these could all be represented by a single line in the code:
*
* GEN_FW_RANGE(0x1000, 0xffff, FORCEWAKE_GT)
*
* When adding new forcewake tables here, please also add them to
* intel_uncore_mock_selftests in selftests/intel_uncore.c so that they will be
* scanned for obvious mistakes or typos by the selftests.
*/
static const struct intel_forcewake_range __gen6_fw_ranges[] = {
GEN_FW_RANGE(0x0, 0x3ffff, FORCEWAKE_RENDER),
};
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),
};
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),
};
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),
};
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)
};
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 const struct intel_forcewake_range __dg2_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, 0x4aff, FORCEWAKE_GT),
GEN_FW_RANGE(0x4b00, 0x51ff, 0), /*
0x4b00 - 0x4fff: reserved
0x5000 - 0x51ff: always on */
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, 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, 0x8cff, FORCEWAKE_GT), /*
0x8500 - 0x87ff: gt
0x8800 - 0x8c7f: reserved
0x8c80 - 0x8cff: gt (DG2 only) */
GEN_FW_RANGE(0x8d00, 0x8fff, FORCEWAKE_RENDER), /*
0x8d00 - 0x8dff: render (DG2 only)
0x8e00 - 0x8fff: reserved */
GEN_FW_RANGE(0x9000, 0x94cf, FORCEWAKE_GT), /*
0x9000 - 0x947f: gt
0x9480 - 0x94cf: reserved */
GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
GEN_FW_RANGE(0x9560, 0x967f, 0), /*
0x9560 - 0x95ff: always on
0x9600 - 0x967f: reserved */
GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /*
0x9680 - 0x96ff: render
0x9700 - 0x97ff: reserved */
GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /*
0x9800 - 0xb4ff: gt
0xb500 - 0xbfff: reserved
0xc000 - 0xcfff: gt */
GEN_FW_RANGE(0xd000, 0xd7ff, 0),
GEN_FW_RANGE(0xd800, 0xd87f, FORCEWAKE_RENDER),
GEN_FW_RANGE(0xd880, 0xdbff, FORCEWAKE_GT),
GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER),
GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /*
0xdd00 - 0xddff: gt
0xde00 - 0xde7f: reserved */
GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /*
0xde80 - 0xdfff: render
0xe000 - 0xe0ff: reserved
0xe100 - 0xe8ff: render */
GEN_FW_RANGE(0xe900, 0xffff, FORCEWAKE_GT), /*
0xe900 - 0xe9ff: gt
0xea00 - 0xefff: reserved
0xf000 - 0xffff: gt */
GEN_FW_RANGE(0x10000, 0x12fff, 0), /*
0x10000 - 0x11fff: reserved
0x12000 - 0x127ff: always on
0x12800 - 0x12fff: reserved */
GEN_FW_RANGE(0x13000, 0x131ff, FORCEWAKE_MEDIA_VDBOX0),
GEN_FW_RANGE(0x13200, 0x147ff, FORCEWAKE_MEDIA_VDBOX2), /*
0x13200 - 0x133ff: VD2 (DG2 only)
0x13400 - 0x147ff: reserved */
GEN_FW_RANGE(0x14800, 0x14fff, FORCEWAKE_RENDER),
GEN_FW_RANGE(0x15000, 0x16dff, FORCEWAKE_GT), /*
0x15000 - 0x15fff: gt (DG2 only)
0x16000 - 0x16dff: reserved */
GEN_FW_RANGE(0x16e00, 0x21fff, FORCEWAKE_RENDER), /*
0x16e00 - 0x1ffff: render
0x20000 - 0x21fff: reserved */
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, 0x25fff, FORCEWAKE_GT), /*
0x25200 - 0x252ff: gt
0x25300 - 0x25fff: reserved */
GEN_FW_RANGE(0x26000, 0x2ffff, FORCEWAKE_RENDER), /*
0x26000 - 0x27fff: render
0x28000 - 0x29fff: reserved
0x2a000 - 0x2ffff: undocumented */
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: VD0
0x1c3f00 - 0x1c3fff: VD0 */
GEN_FW_RANGE(0x1c4000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX1), /*
0x1c4000 - 0x1c6bff: VD1
0x1c6c00 - 0x1c6cff: reserved
0x1c6d00 - 0x1c6dff: VD1
0x1c6e00 - 0x1c7fff: reserved */
GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /*
0x1c8000 - 0x1ca0ff: VE0
0x1ca100 - 0x1cbfff: reserved */
GEN_FW_RANGE(0x1cc000, 0x1ccfff, FORCEWAKE_MEDIA_VDBOX0),
GEN_FW_RANGE(0x1cd000, 0x1cdfff, FORCEWAKE_MEDIA_VDBOX2),
GEN_FW_RANGE(0x1ce000, 0x1cefff, FORCEWAKE_MEDIA_VDBOX4),
GEN_FW_RANGE(0x1cf000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX6),
GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), /*
0x1d0000 - 0x1d2bff: VD2
0x1d2c00 - 0x1d2cff: reserved
0x1d2d00 - 0x1d2dff: VD2
0x1d2e00 - 0x1d3dff: VD2
0x1d3e00 - 0x1d3eff: reserved
0x1d3f00 - 0x1d3fff: VD2 */
GEN_FW_RANGE(0x1d4000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX3), /*
0x1d4000 - 0x1d6bff: VD3
0x1d6c00 - 0x1d6cff: reserved
0x1d6d00 - 0x1d6dff: VD3
0x1d6e00 - 0x1d7fff: reserved */
GEN_FW_RANGE(0x1d8000, 0x1dffff, FORCEWAKE_MEDIA_VEBOX1), /*
0x1d8000 - 0x1da0ff: VE1
0x1da100 - 0x1dffff: reserved */
GEN_FW_RANGE(0x1e0000, 0x1e3fff, FORCEWAKE_MEDIA_VDBOX4), /*
0x1e0000 - 0x1e2bff: VD4
0x1e2c00 - 0x1e2cff: reserved
0x1e2d00 - 0x1e2dff: VD4
0x1e2e00 - 0x1e3eff: reserved
0x1e3f00 - 0x1e3fff: VD4 */
GEN_FW_RANGE(0x1e4000, 0x1e7fff, FORCEWAKE_MEDIA_VDBOX5), /*
0x1e4000 - 0x1e6bff: VD5
0x1e6c00 - 0x1e6cff: reserved
0x1e6d00 - 0x1e6dff: VD5
0x1e6e00 - 0x1e7fff: reserved */
GEN_FW_RANGE(0x1e8000, 0x1effff, FORCEWAKE_MEDIA_VEBOX2), /*
0x1e8000 - 0x1ea0ff: VE2
0x1ea100 - 0x1effff: reserved */
GEN_FW_RANGE(0x1f0000, 0x1f3fff, FORCEWAKE_MEDIA_VDBOX6), /*
0x1f0000 - 0x1f2bff: VD6
0x1f2c00 - 0x1f2cff: reserved
0x1f2d00 - 0x1f2dff: VD6
0x1f2e00 - 0x1f3eff: reserved
0x1f3f00 - 0x1f3fff: VD6 */
GEN_FW_RANGE(0x1f4000, 0x1f7fff, FORCEWAKE_MEDIA_VDBOX7), /*
0x1f4000 - 0x1f6bff: VD7
0x1f6c00 - 0x1f6cff: reserved
0x1f6d00 - 0x1f6dff: VD7
0x1f6e00 - 0x1f7fff: reserved */
GEN_FW_RANGE(0x1f8000, 0x1fa0ff, FORCEWAKE_MEDIA_VEBOX3),
};
static const struct intel_forcewake_range __mtl_fw_ranges[] = {
GEN_FW_RANGE(0x0, 0xaff, 0),
GEN_FW_RANGE(0xb00, 0xbff, FORCEWAKE_GT),
GEN_FW_RANGE(0xc00, 0xfff, 0),
GEN_FW_RANGE(0x1000, 0x1fff, FORCEWAKE_GT),
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), /*
0x4000 - 0x48ff: render
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, 0x817f, FORCEWAKE_RENDER), /*
0x8140 - 0x815f: render
0x8160 - 0x817f: reserved */
GEN_FW_RANGE(0x8180, 0x81ff, 0),
GEN_FW_RANGE(0x8200, 0x94cf, FORCEWAKE_GT), /*
0x8200 - 0x87ff: gt
0x8800 - 0x8dff: reserved
0x8e00 - 0x8f7f: gt
0x8f80 - 0x8fff: reserved
0x9000 - 0x947f: gt
0x9480 - 0x94cf: reserved */
GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
GEN_FW_RANGE(0x9560, 0x967f, 0), /*
0x9560 - 0x95ff: always on
0x9600 - 0x967f: reserved */
GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /*
0x9680 - 0x96ff: render
0x9700 - 0x97ff: reserved */
GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /*
0x9800 - 0xb4ff: gt
0xb500 - 0xbfff: reserved
0xc000 - 0xcfff: gt */
GEN_FW_RANGE(0xd000, 0xd7ff, 0), /*
0xd000 - 0xd3ff: always on
0xd400 - 0xd7ff: reserved */
GEN_FW_RANGE(0xd800, 0xd87f, FORCEWAKE_RENDER),
GEN_FW_RANGE(0xd880, 0xdbff, FORCEWAKE_GT),
GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER),
GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /*
0xdd00 - 0xddff: gt
0xde00 - 0xde7f: reserved */
GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /*
0xde80 - 0xdfff: render
0xe000 - 0xe0ff: reserved
0xe100 - 0xe8ff: render */
GEN_FW_RANGE(0xe900, 0xe9ff, FORCEWAKE_GT),
GEN_FW_RANGE(0xea00, 0x147ff, 0), /*
0xea00 - 0x11fff: reserved
0x12000 - 0x127ff: always on
0x12800 - 0x147ff: reserved */
GEN_FW_RANGE(0x14800, 0x19fff, FORCEWAKE_GT), /*
0x14800 - 0x153ff: gt
0x15400 - 0x19fff: reserved */
GEN_FW_RANGE(0x1a000, 0x21fff, FORCEWAKE_RENDER), /*
0x1a000 - 0x1bfff: render
0x1c000 - 0x21fff: reserved */
GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT),
GEN_FW_RANGE(0x24000, 0x2ffff, 0), /*
0x24000 - 0x2407f: always on
0x24080 - 0x2ffff: reserved */
GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT),
GEN_FW_RANGE(0x40000, 0x1901ef, 0),
GEN_FW_RANGE(0x1901f0, 0x1901f3, FORCEWAKE_GT)
/* FIXME: WA to wake GT while triggering H2G */
};
/*
* Note that the register ranges here are the final offsets after
* translation of the GSI block to the 0x380000 offset.
*
* NOTE: There are a couple MCR ranges near the bottom of this table
* that need to power up either VD0 or VD2 depending on which replicated
* instance of the register we're trying to access. Our forcewake logic
* at the moment doesn't have a good way to take steering into consideration,
* and the driver doesn't even access any registers in those ranges today,
* so for now we just mark those ranges as FORCEWAKE_ALL. That will ensure
* proper operation if we do start using the ranges in the future, and we
* can determine at that time whether it's worth adding extra complexity to
* the forcewake handling to take steering into consideration.
*/
static const struct intel_forcewake_range __xelpmp_fw_ranges[] = {
GEN_FW_RANGE(0x0, 0x115fff, 0), /* render GT range */
GEN_FW_RANGE(0x116000, 0x11ffff, FORCEWAKE_GSC), /*
0x116000 - 0x117fff: gsc
0x118000 - 0x119fff: reserved
0x11a000 - 0x11efff: gsc
0x11f000 - 0x11ffff: reserved */
GEN_FW_RANGE(0x120000, 0x1bffff, 0), /* non-GT range */
GEN_FW_RANGE(0x1c0000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX0), /*
0x1c0000 - 0x1c3dff: VD0
0x1c3e00 - 0x1c3eff: reserved
0x1c3f00 - 0x1c3fff: VD0
0x1c4000 - 0x1c7fff: reserved */
GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /*
0x1c8000 - 0x1ca0ff: VE0
0x1ca100 - 0x1cbfff: reserved */
GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX0), /*
0x1cc000 - 0x1cdfff: VD0
0x1ce000 - 0x1cffff: reserved */
GEN_FW_RANGE(0x1d0000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX2), /*
0x1d0000 - 0x1d3dff: VD2
0x1d3e00 - 0x1d3eff: reserved
0x1d4000 - 0x1d7fff: VD2 */
GEN_FW_RANGE(0x1d8000, 0x1da0ff, FORCEWAKE_MEDIA_VEBOX1),
GEN_FW_RANGE(0x1da100, 0x380aff, 0), /*
0x1da100 - 0x23ffff: reserved
0x240000 - 0x37ffff: non-GT range
0x380000 - 0x380aff: reserved */
GEN_FW_RANGE(0x380b00, 0x380bff, FORCEWAKE_GT),
GEN_FW_RANGE(0x380c00, 0x380fff, 0),
GEN_FW_RANGE(0x381000, 0x38817f, FORCEWAKE_GT), /*
0x381000 - 0x381fff: gt
0x382000 - 0x383fff: reserved
0x384000 - 0x384aff: gt
0x384b00 - 0x3851ff: reserved
0x385200 - 0x3871ff: gt
0x387200 - 0x387fff: reserved
0x388000 - 0x38813f: gt
0x388140 - 0x38817f: reserved */
GEN_FW_RANGE(0x388180, 0x3882ff, 0), /*
0x388180 - 0x3881ff: always on
0x388200 - 0x3882ff: reserved */
GEN_FW_RANGE(0x388300, 0x38955f, FORCEWAKE_GT), /*
0x388300 - 0x38887f: gt
0x388880 - 0x388fff: reserved
0x389000 - 0x38947f: gt
0x389480 - 0x38955f: reserved */
GEN_FW_RANGE(0x389560, 0x389fff, 0), /*
0x389560 - 0x3895ff: always on
0x389600 - 0x389fff: reserved */
GEN_FW_RANGE(0x38a000, 0x38cfff, FORCEWAKE_GT), /*
0x38a000 - 0x38afff: gt
0x38b000 - 0x38bfff: reserved
0x38c000 - 0x38cfff: gt */
GEN_FW_RANGE(0x38d000, 0x38d11f, 0),
GEN_FW_RANGE(0x38d120, 0x391fff, FORCEWAKE_GT), /*
0x38d120 - 0x38dfff: gt
0x38e000 - 0x38efff: reserved
0x38f000 - 0x38ffff: gt
0x389000 - 0x391fff: reserved */
GEN_FW_RANGE(0x392000, 0x392fff, 0), /*
0x392000 - 0x3927ff: always on
0x392800 - 0x292fff: reserved */
GEN_FW_RANGE(0x393000, 0x3931ff, FORCEWAKE_GT),
GEN_FW_RANGE(0x393200, 0x39323f, FORCEWAKE_ALL), /* instance-based, see note above */
GEN_FW_RANGE(0x393240, 0x3933ff, FORCEWAKE_GT),
GEN_FW_RANGE(0x393400, 0x3934ff, FORCEWAKE_ALL), /* instance-based, see note above */
GEN_FW_RANGE(0x393500, 0x393c7f, 0), /*
0x393500 - 0x393bff: reserved
0x393c00 - 0x393c7f: always on */
GEN_FW_RANGE(0x393c80, 0x393dff, FORCEWAKE_GT),
};
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, RING_MI_MODE(RENDER_RING_BASE), 0);
}
static void
__unclaimed_reg_debug(struct intel_uncore *uncore,
const i915_reg_t reg,
const bool read)
{
if (drm_WARN(&uncore->i915->drm,
check_for_unclaimed_mmio(uncore),
"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 void
__unclaimed_previous_reg_debug(struct intel_uncore *uncore,
const i915_reg_t reg,
const bool read)
{
if (check_for_unclaimed_mmio(uncore))
drm_dbg(&uncore->i915->drm,
"Unclaimed access detected before %s register 0x%x\n",
read ? "read from" : "write to",
i915_mmio_reg_offset(reg));
}
static inline bool __must_check
unclaimed_reg_debug_header(struct intel_uncore *uncore,
const i915_reg_t reg, const bool read)
{
if (likely(!uncore->i915->params.mmio_debug) || !uncore->debug)
return false;
/* interrupts are disabled and re-enabled around uncore->lock usage */
lockdep_assert_held(&uncore->lock);
spin_lock(&uncore->debug->lock);
__unclaimed_previous_reg_debug(uncore, reg, read);
return true;
}
static inline void
unclaimed_reg_debug_footer(struct intel_uncore *uncore,
const i915_reg_t reg, const bool read)
{
/* interrupts are disabled and re-enabled around uncore->lock usage */
lockdep_assert_held(&uncore->lock);
__unclaimed_reg_debug(uncore, reg, read);
spin_unlock(&uncore->debug->lock);
}
#define __vgpu_read(x) \
static u##x \
vgpu_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
u##x val = __raw_uncore_read##x(uncore, reg); \
trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
return val; \
}
__vgpu_read(8)
__vgpu_read(16)
__vgpu_read(32)
__vgpu_read(64)
#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; \
bool unclaimed_reg_debug; \
u##x val = 0; \
assert_rpm_wakelock_held(uncore->rpm); \
spin_lock_irqsave(&uncore->lock, irqflags); \
unclaimed_reg_debug = unclaimed_reg_debug_header(uncore, reg, true)
#define GEN6_READ_FOOTER \
if (unclaimed_reg_debug) \
unclaimed_reg_debug_footer(uncore, reg, true); \
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);
fw_domains_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_fwtable_read(x) \
static u##x \
fwtable_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) \
{ \
enum forcewake_domains fw_engine; \
GEN6_READ_HEADER(x); \
fw_engine = __fwtable_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; \
}
static enum forcewake_domains
fwtable_reg_read_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) {
return __fwtable_reg_read_fw_domains(uncore, i915_mmio_reg_offset(reg));
}
__gen_fwtable_read(8)
__gen_fwtable_read(16)
__gen_fwtable_read(32)
__gen_fwtable_read(64)
#undef __gen_fwtable_read
#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; \
bool unclaimed_reg_debug; \
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 = unclaimed_reg_debug_header(uncore, reg, false)
#define GEN6_WRITE_FOOTER \
if (unclaimed_reg_debug) \
unclaimed_reg_debug_footer(uncore, reg, 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_fwtable_write(x) \
static void \
fwtable_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 = __fwtable_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; \
}
static enum forcewake_domains
fwtable_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg)
{
return __fwtable_reg_write_fw_domains(uncore, i915_mmio_reg_offset(reg));
}
__gen_fwtable_write(8)
__gen_fwtable_write(16)
__gen_fwtable_write(32)
#undef __gen_fwtable_write
#undef GEN6_WRITE_FOOTER
#undef GEN6_WRITE_HEADER
#define __vgpu_write(x) \
static void \
vgpu_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
__raw_uncore_write##x(uncore, reg, val); \
}
__vgpu_write(8)
__vgpu_write(16)
__vgpu_write(32)
#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) + uncore->gsi_offset;
d->reg_ack = uncore->regs + i915_mmio_reg_offset(reg_ack) + uncore->gsi_offset;
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_VDBOX4 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX4));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX5 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX5));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX6 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX6));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX7 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX7));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX0));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX1));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX2));
BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX3));
BUILD_BUG_ON(FORCEWAKE_GSC != (1 << FW_DOMAIN_ID_GSC));
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 const struct intel_uncore_fw_get uncore_get_fallback = {
.force_wake_get = fw_domains_get_with_fallback
};
static const struct intel_uncore_fw_get uncore_get_normal = {
.force_wake_get = fw_domains_get_normal,
};
static const struct intel_uncore_fw_get uncore_get_thread_status = {
.force_wake_get = fw_domains_get_with_thread_status
};
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 (GRAPHICS_VER(i915) >= 11) {
intel_engine_mask_t emask;
int i;
/* we'll prune the domains of missing engines later */
emask = uncore->gt->info.engine_mask;
uncore->fw_get_funcs = &uncore_get_fallback;
if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
fw_domain_init(uncore, FW_DOMAIN_ID_GT,
FORCEWAKE_GT_GEN9,
FORCEWAKE_ACK_GT_MTL);
else
fw_domain_init(uncore, FW_DOMAIN_ID_GT,
FORCEWAKE_GT_GEN9,
FORCEWAKE_ACK_GT_GEN9);
if (RCS_MASK(uncore->gt) || CCS_MASK(uncore->gt))
fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
FORCEWAKE_RENDER_GEN9,
FORCEWAKE_ACK_RENDER_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));
}
if (uncore->gt->type == GT_MEDIA)
fw_domain_init(uncore, FW_DOMAIN_ID_GSC,
FORCEWAKE_REQ_GSC, FORCEWAKE_ACK_GSC);
} else if (IS_GRAPHICS_VER(i915, 9, 10)) {
uncore->fw_get_funcs = &uncore_get_fallback;
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->fw_get_funcs = &uncore_get_normal;
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->fw_get_funcs = &uncore_get_thread_status;
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->fw_get_funcs = &uncore_get_thread_status;
/* 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 (GRAPHICS_VER(i915) == 6) {
uncore->fw_get_funcs = &uncore_get_thread_status;
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)); \
}
#define ASSIGN_SHADOW_TABLE(uncore, d) \
{ \
(uncore)->shadowed_reg_table = d; \
(uncore)->shadowed_reg_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 void uncore_unmap_mmio(struct drm_device *drm, void *regs)
{
iounmap((void __iomem *)regs);
}
int intel_uncore_setup_mmio(struct intel_uncore *uncore, phys_addr_t phys_addr)
{
struct drm_i915_private *i915 = uncore->i915;
int mmio_size;
/*
* 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, and this larger
* range is also used for integrated gpus beginning with Meteor Lake.
*/
if (IS_DGFX(i915) || GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
mmio_size = 4 * 1024 * 1024;
else if (GRAPHICS_VER(i915) >= 5)
mmio_size = 2 * 1024 * 1024;
else
mmio_size = 512 * 1024;
uncore->regs = ioremap(phys_addr, mmio_size);
if (uncore->regs == NULL) {
drm_err(&i915->drm, "failed to map registers\n");
return -EIO;
}
return drmm_add_action_or_reset(&i915->drm, uncore_unmap_mmio,
(void __force *)uncore->regs);
}
void intel_uncore_init_early(struct intel_uncore *uncore,
struct intel_gt *gt)
{
spin_lock_init(&uncore->lock);
uncore->i915 = gt->i915;
uncore->gt = gt;
uncore->rpm = &gt->i915->runtime_pm;
}
static void uncore_raw_init(struct intel_uncore *uncore)
{
GEM_BUG_ON(intel_uncore_has_forcewake(uncore));
if (intel_vgpu_active(uncore->i915)) {
ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, vgpu);
ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, vgpu);
} else if (GRAPHICS_VER(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_media_forcewake_init(struct intel_uncore *uncore)
{
struct drm_i915_private *i915 = uncore->i915;
if (MEDIA_VER(i915) >= 13) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __xelpmp_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, xelpmp_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else {
MISSING_CASE(MEDIA_VER(i915));
return -ENODEV;
}
return 0;
}
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);
ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
if (uncore->gt->type == GT_MEDIA)
return uncore_media_forcewake_init(uncore);
if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __mtl_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, mtl_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 55)) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __dg2_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, dg2_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (GRAPHICS_VER(i915) >= 12) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen12_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, gen12_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (GRAPHICS_VER(i915) == 11) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen11_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, gen11_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (IS_GRAPHICS_VER(i915, 9, 10)) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen9_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (IS_CHERRYVIEW(i915)) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __chv_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (GRAPHICS_VER(i915) == 8) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen6_fw_ranges);
ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
} else if (IS_VALLEYVIEW(i915)) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __vlv_fw_ranges);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6);
} else if (IS_GRAPHICS_VER(i915, 6, 7)) {
ASSIGN_FW_DOMAINS_TABLE(uncore, __gen6_fw_ranges);
ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6);
}
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;
}
static int sanity_check_mmio_access(struct intel_uncore *uncore)
{
struct drm_i915_private *i915 = uncore->i915;
if (GRAPHICS_VER(i915) < 8)
return 0;
/*
* Sanitycheck that MMIO access to the device is working properly. If
* the CPU is unable to communcate with a PCI device, BAR reads will
* return 0xFFFFFFFF. Let's make sure the device isn't in this state
* before we start trying to access registers.
*
* We use the primary GT's forcewake register as our guinea pig since
* it's been around since HSW and it's a masked register so the upper
* 16 bits can never read back as 1's if device access is operating
* properly.
*
* If MMIO isn't working, we'll wait up to 2 seconds to see if it
* recovers, then give up.
*/
#define COND (__raw_uncore_read32(uncore, FORCEWAKE_MT) != ~0)
if (wait_for(COND, 2000) == -ETIMEDOUT) {
drm_err(&i915->drm, "Device is non-operational; MMIO access returns 0xFFFFFFFF!\n");
return -EIO;
}
return 0;
}
int intel_uncore_init_mmio(struct intel_uncore *uncore)
{
struct drm_i915_private *i915 = uncore->i915;
int ret;
ret = sanity_check_mmio_access(uncore);
if (ret)
return ret;
/*
* The boot firmware initializes local memory and assesses its health.
* If memory training fails, the punit will have been instructed to
* keep the GT powered down; we won't be able to communicate with it
* and we should not continue with driver initialization.
*/
if (IS_DGFX(i915) &&
!(__raw_uncore_read32(uncore, GU_CNTL) & LMEM_INIT)) {
drm_err(&i915->drm, "LMEM not initialized by firmware\n");
return -ENODEV;
}
if (GRAPHICS_VER(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)
return ret;
}
/* make sure fw funcs are set if and only if we have fw*/
GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->fw_get_funcs);
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_GRAPHICS_VER(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;
}
/*
* 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) || GRAPHICS_VER(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;
/*
* Starting with XeHP, the power well for an even-numbered
* VDBOX is also used for shared units within the
* media slice such as SFC. So even if the engine
* itself is fused off, we still need to initialize
* the forcewake domain if any of the other engines
* in the same media slice are present.
*/
if (GRAPHICS_VER_FULL(uncore->i915) >= IP_VER(12, 55) && i % 2 == 0) {
if ((i + 1 < I915_MAX_VCS) && HAS_ENGINE(gt, _VCS(i + 1)))
continue;
if (HAS_ENGINE(gt, _VECS(i / 2)))
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);
}
if ((fw_domains & BIT(FW_DOMAIN_ID_GSC)) && !HAS_ENGINE(gt, GSC0))
fw_domain_fini(uncore, FW_DOMAIN_ID_GSC);
}
/*
* The driver-initiated FLR is the highest level of reset that we can trigger
* from within the driver. It is different from the PCI FLR in that it doesn't
* fully reset the SGUnit and doesn't modify the PCI config space and therefore
* it doesn't require a re-enumeration of the PCI BARs. However, the
* driver-initiated FLR does still cause a reset of both GT and display and a
* memory wipe of local and stolen memory, so recovery would require a full HW
* re-init and saving/restoring (or re-populating) the wiped memory. Since we
* perform the FLR as the very last action before releasing access to the HW
* during the driver release flow, we don't attempt recovery at all, because
* if/when a new instance of i915 is bound to the device it will do a full
* re-init anyway.
*/
static void driver_initiated_flr(struct intel_uncore *uncore)
{
struct drm_i915_private *i915 = uncore->i915;
unsigned int flr_timeout_ms;
int ret;
drm_dbg(&i915->drm, "Triggering Driver-FLR\n");
/*
* The specification recommends a 3 seconds FLR reset timeout. To be
* cautious, we will extend this to 9 seconds, three times the specified
* timeout.
*/
flr_timeout_ms = 9000;
/*
* Make sure any pending FLR requests have cleared by waiting for the
* FLR trigger bit to go to zero. Also clear GU_DEBUG's DRIVERFLR_STATUS
* to make sure it's not still set from a prior attempt (it's a write to
* clear bit).
* Note that we should never be in a situation where a previous attempt
* is still pending (unless the HW is totally dead), but better to be
* safe in case something unexpected happens
*/
ret = intel_wait_for_register_fw(uncore, GU_CNTL, DRIVERFLR, 0, flr_timeout_ms);
if (ret) {
drm_err(&i915->drm,
"Failed to wait for Driver-FLR bit to clear! %d\n",
ret);
return;
}
intel_uncore_write_fw(uncore, GU_DEBUG, DRIVERFLR_STATUS);
/* Trigger the actual Driver-FLR */
intel_uncore_rmw_fw(uncore, GU_CNTL, 0, DRIVERFLR);
/* Wait for hardware teardown to complete */
ret = intel_wait_for_register_fw(uncore, GU_CNTL,
DRIVERFLR, 0,
flr_timeout_ms);
if (ret) {
drm_err(&i915->drm, "Driver-FLR-teardown wait completion failed! %d\n", ret);
return;
}
/* Wait for hardware/firmware re-init to complete */
ret = intel_wait_for_register_fw(uncore, GU_DEBUG,
DRIVERFLR_STATUS, DRIVERFLR_STATUS,
flr_timeout_ms);
if (ret) {
drm_err(&i915->drm, "Driver-FLR-reinit wait completion failed! %d\n", ret);
return;
}
/* Clear sticky completion status */
intel_uncore_write_fw(uncore, GU_DEBUG, DRIVERFLR_STATUS);
}
/* Called via drm-managed action */
void intel_uncore_fini_mmio(struct drm_device *dev, void *data)
{
struct intel_uncore *uncore = data;
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();
}
if (intel_uncore_needs_flr_on_fini(uncore))
driver_initiated_flr(uncore);
}
/**
* __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 ::
*
* (intel_uncore_read_fw(uncore, 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 ::
*
* (intel_uncore_read(uncore, 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, &reg_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;
if (!uncore->debug)
return false;
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;
if (drm_WARN_ON(&uncore->i915->drm, !uncore->debug))
return 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