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/*
* Copyright © 2017 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.
*
*/
#ifndef __INTEL_UNCORE_H__
#define __INTEL_UNCORE_H__
#include <linux/spinlock.h>
#include <linux/notifier.h>
#include <linux/hrtimer.h>
#include "i915_reg.h"
struct drm_i915_private;
struct intel_uncore;
enum forcewake_domain_id {
FW_DOMAIN_ID_RENDER = 0,
FW_DOMAIN_ID_BLITTER,
FW_DOMAIN_ID_MEDIA,
FW_DOMAIN_ID_MEDIA_VDBOX0,
FW_DOMAIN_ID_MEDIA_VDBOX1,
FW_DOMAIN_ID_MEDIA_VDBOX2,
FW_DOMAIN_ID_MEDIA_VDBOX3,
FW_DOMAIN_ID_MEDIA_VEBOX0,
FW_DOMAIN_ID_MEDIA_VEBOX1,
FW_DOMAIN_ID_COUNT
};
enum forcewake_domains {
FORCEWAKE_RENDER = BIT(FW_DOMAIN_ID_RENDER),
FORCEWAKE_BLITTER = BIT(FW_DOMAIN_ID_BLITTER),
FORCEWAKE_MEDIA = BIT(FW_DOMAIN_ID_MEDIA),
FORCEWAKE_MEDIA_VDBOX0 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX0),
FORCEWAKE_MEDIA_VDBOX1 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX1),
FORCEWAKE_MEDIA_VDBOX2 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX2),
FORCEWAKE_MEDIA_VDBOX3 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX3),
FORCEWAKE_MEDIA_VEBOX0 = BIT(FW_DOMAIN_ID_MEDIA_VEBOX0),
FORCEWAKE_MEDIA_VEBOX1 = BIT(FW_DOMAIN_ID_MEDIA_VEBOX1),
FORCEWAKE_ALL = BIT(FW_DOMAIN_ID_COUNT) - 1
};
struct intel_uncore_funcs {
void (*force_wake_get)(struct intel_uncore *uncore,
enum forcewake_domains domains);
void (*force_wake_put)(struct intel_uncore *uncore,
enum forcewake_domains domains);
u8 (*mmio_readb)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
u16 (*mmio_readw)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
u32 (*mmio_readl)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
u64 (*mmio_readq)(struct drm_i915_private *dev_priv,
i915_reg_t r, bool trace);
void (*mmio_writeb)(struct drm_i915_private *dev_priv,
i915_reg_t r, u8 val, bool trace);
void (*mmio_writew)(struct drm_i915_private *dev_priv,
i915_reg_t r, u16 val, bool trace);
void (*mmio_writel)(struct drm_i915_private *dev_priv,
i915_reg_t r, u32 val, bool trace);
};
struct intel_forcewake_range {
u32 start;
u32 end;
enum forcewake_domains domains;
};
struct intel_uncore {
void __iomem *regs;
spinlock_t lock; /** lock is also taken in irq contexts. */
unsigned int flags;
#define UNCORE_HAS_FORCEWAKE BIT(0)
#define UNCORE_HAS_FPGA_DBG_UNCLAIMED BIT(1)
#define UNCORE_HAS_DBG_UNCLAIMED BIT(2)
#define UNCORE_HAS_FIFO BIT(3)
const struct intel_forcewake_range *fw_domains_table;
unsigned int fw_domains_table_entries;
struct notifier_block pmic_bus_access_nb;
struct intel_uncore_funcs funcs;
unsigned int fifo_count;
enum forcewake_domains fw_domains;
enum forcewake_domains fw_domains_active;
enum forcewake_domains fw_domains_saved; /* user domains saved for S3 */
struct intel_uncore_forcewake_domain {
enum forcewake_domain_id id;
enum forcewake_domains mask;
unsigned int wake_count;
bool active;
struct hrtimer timer;
u32 __iomem *reg_set;
u32 __iomem *reg_ack;
} fw_domain[FW_DOMAIN_ID_COUNT];
struct {
unsigned int count;
int saved_mmio_check;
int saved_mmio_debug;
} user_forcewake;
int unclaimed_mmio_check;
};
/* Iterate over initialised fw domains */
#define for_each_fw_domain_masked(domain__, mask__, uncore__, tmp__) \
for (tmp__ = (mask__); \
tmp__ ? (domain__ = &(uncore__)->fw_domain[__mask_next_bit(tmp__)]), 1 : 0;)
#define for_each_fw_domain(domain__, uncore__, tmp__) \
for_each_fw_domain_masked(domain__, (uncore__)->fw_domains, uncore__, tmp__)
static inline struct intel_uncore *
forcewake_domain_to_uncore(const struct intel_uncore_forcewake_domain *d)
{
return container_of(d, struct intel_uncore, fw_domain[d->id]);
}
static inline bool
intel_uncore_has_forcewake(const struct intel_uncore *uncore)
{
return uncore->flags & UNCORE_HAS_FORCEWAKE;
}
static inline bool
intel_uncore_has_fpga_dbg_unclaimed(const struct intel_uncore *uncore)
{
return uncore->flags & UNCORE_HAS_FPGA_DBG_UNCLAIMED;
}
static inline bool
intel_uncore_has_dbg_unclaimed(const struct intel_uncore *uncore)
{
return uncore->flags & UNCORE_HAS_DBG_UNCLAIMED;
}
static inline bool
intel_uncore_has_fifo(const struct intel_uncore *uncore)
{
return uncore->flags & UNCORE_HAS_FIFO;
}
void intel_uncore_sanitize(struct drm_i915_private *dev_priv);
int intel_uncore_init(struct intel_uncore *uncore);
void intel_uncore_prune(struct intel_uncore *uncore);
bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore);
bool intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore);
void intel_uncore_fini(struct intel_uncore *uncore);
void intel_uncore_suspend(struct intel_uncore *uncore);
void intel_uncore_resume_early(struct intel_uncore *uncore);
void intel_uncore_runtime_resume(struct intel_uncore *uncore);
u64 intel_uncore_edram_size(struct drm_i915_private *dev_priv);
void assert_forcewakes_inactive(struct intel_uncore *uncore);
void assert_forcewakes_active(struct intel_uncore *uncore,
enum forcewake_domains fw_domains);
const char *intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id);
enum forcewake_domains
intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv,
i915_reg_t reg, unsigned int op);
#define FW_REG_READ (1)
#define FW_REG_WRITE (2)
void intel_uncore_forcewake_get(struct intel_uncore *uncore,
enum forcewake_domains domains);
void intel_uncore_forcewake_put(struct intel_uncore *uncore,
enum forcewake_domains domains);
/* Like above but the caller must manage the uncore.lock itself.
* Must be used with I915_READ_FW and friends.
*/
void intel_uncore_forcewake_get__locked(struct intel_uncore *uncore,
enum forcewake_domains domains);
void intel_uncore_forcewake_put__locked(struct intel_uncore *uncore,
enum forcewake_domains domains);
void intel_uncore_forcewake_user_get(struct intel_uncore *uncore);
void intel_uncore_forcewake_user_put(struct intel_uncore *uncore);
int __intel_wait_for_register(struct drm_i915_private *dev_priv,
i915_reg_t reg,
u32 mask,
u32 value,
unsigned int fast_timeout_us,
unsigned int slow_timeout_ms,
u32 *out_value);
static inline
int intel_wait_for_register(struct drm_i915_private *dev_priv,
i915_reg_t reg,
u32 mask,
u32 value,
unsigned int timeout_ms)
{
return __intel_wait_for_register(dev_priv, reg, mask, value, 2,
timeout_ms, NULL);
}
int __intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
i915_reg_t reg,
u32 mask,
u32 value,
unsigned int fast_timeout_us,
unsigned int slow_timeout_ms,
u32 *out_value);
static inline
int intel_wait_for_register_fw(struct drm_i915_private *dev_priv,
i915_reg_t reg,
u32 mask,
u32 value,
unsigned int timeout_ms)
{
return __intel_wait_for_register_fw(dev_priv, reg, mask, value,
2, timeout_ms, NULL);
}
/* register access functions */
#define __raw_read(x__, s__) \
static inline u##x__ __raw_uncore_read##x__(const struct intel_uncore *uncore, \
i915_reg_t reg) \
{ \
return read##s__(uncore->regs + i915_mmio_reg_offset(reg)); \
}
#define __raw_write(x__, s__) \
static inline void __raw_uncore_write##x__(const struct intel_uncore *uncore, \
i915_reg_t reg, u##x__ val) \
{ \
write##s__(val, uncore->regs + i915_mmio_reg_offset(reg)); \
}
__raw_read(8, b)
__raw_read(16, w)
__raw_read(32, l)
__raw_read(64, q)
__raw_write(8, b)
__raw_write(16, w)
__raw_write(32, l)
__raw_write(64, q)
#undef __raw_read
#undef __raw_write
#define raw_reg_read(base, reg) \
readl(base + i915_mmio_reg_offset(reg))
#define raw_reg_write(base, reg, value) \
writel(value, base + i915_mmio_reg_offset(reg))
#endif /* !__INTEL_UNCORE_H__ */
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