mirror of
https://github.com/torvalds/linux.git
synced 2026-04-19 15:24:02 -04:00
85ba57ad88
The PPU flop reset is required on some hardware to clear the
temporary registers. This code follows the implementation
of the PPU flop reset as found in the public galcore kernel
module. Compared to that code some superfluous parts were
removed and only the code path for SoC chip_model = 0x8000
and revision = 0x6205 is implemented and tested.
v2: - Move flop reset data to etnaviv_drm_private and initialize it
from etnaviv_gpu_bind (Lucas)
- Prepare code for more chip IDs and other flop reset types
- Do some cleanups and rename some functions
v3: - Move initialization of flop reset data to etnaviv_gpu_init (Lucas)
- Free PPU data suballocation (Lucas)
v4: As suggested by
- replace "asm-generic/int-ll64.h" with "linux/types.h"
- drop flop reset type enum since we only support one type here
- move function return parameters on same line with function name
- replace open coded for loop with memset32
- add cnost to local static values
- add a return value to etnaviv_flop_reset_ppu_init; handle and
pass errors on to the caller
- handle etnaviv_flop_reset_ppu_init return value
- use dev_err for flop reset error message
- fix include guard to be consistent with the other driver code
- fix license header and formatting
v5: As suggested by Christian Gmeiner:
- add required header that is no longer pulled in by etnaviv_buffer.h
- fix include style of linux headers
- free flop_reset_data_ppu when command buffer initialization fails
- fix typo in error message
[cgmeiner: fix SPDX comment style, fix line end with a '(' and fix typo]
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Tested-by: Marek Vasut <marek.vasut@mailbox.org> # STM32MP255C DHCOS DHSBC
Link: https://patch.msgid.link/20251119164624.9297-5-gert.wollny@collabora.com
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
133 lines
4.1 KiB
C
133 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2015-2018 Etnaviv Project
|
|
*/
|
|
|
|
#ifndef __ETNAVIV_DRV_H__
|
|
#define __ETNAVIV_DRV_H__
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/list.h>
|
|
#include <linux/mm_types.h>
|
|
#include <linux/sizes.h>
|
|
#include <linux/time64.h>
|
|
#include <linux/types.h>
|
|
#include <linux/xarray.h>
|
|
|
|
#include <drm/drm_drv.h>
|
|
#include <drm/drm_gem.h>
|
|
#include <drm/etnaviv_drm.h>
|
|
#include <drm/gpu_scheduler.h>
|
|
|
|
struct etnaviv_cmdbuf;
|
|
struct etnaviv_gpu;
|
|
struct etnaviv_mmu;
|
|
struct etnaviv_gem_object;
|
|
struct etnaviv_gem_submit;
|
|
struct etnaviv_iommu_global;
|
|
|
|
#define ETNAVIV_SOFTPIN_START_ADDRESS SZ_4M /* must be >= SUBALLOC_SIZE */
|
|
|
|
struct etnaviv_file_private {
|
|
int id;
|
|
struct etnaviv_iommu_context *mmu;
|
|
struct drm_sched_entity sched_entity[ETNA_MAX_PIPES];
|
|
};
|
|
|
|
struct etnaviv_drm_private {
|
|
int num_gpus;
|
|
struct etnaviv_gpu *gpu[ETNA_MAX_PIPES];
|
|
gfp_t shm_gfp_mask;
|
|
|
|
struct etnaviv_cmdbuf_suballoc *cmdbuf_suballoc;
|
|
struct etnaviv_iommu_global *mmu_global;
|
|
|
|
struct xarray active_contexts;
|
|
u32 next_context_id;
|
|
|
|
/* list of GEM objects: */
|
|
struct mutex gem_lock;
|
|
struct list_head gem_list;
|
|
|
|
/* ppu flop reset data */
|
|
struct etnaviv_cmdbuf *flop_reset_data_ppu;
|
|
};
|
|
|
|
int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
|
|
struct drm_file *file);
|
|
|
|
int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
|
|
struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
|
|
int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map);
|
|
struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
|
|
struct dma_buf_attachment *attach, struct sg_table *sg);
|
|
int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
|
|
void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
|
|
void *etnaviv_gem_vmap(struct drm_gem_object *obj);
|
|
int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
|
|
struct drm_etnaviv_timespec *timeout);
|
|
int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);
|
|
void etnaviv_gem_free_object(struct drm_gem_object *obj);
|
|
int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file,
|
|
u32 size, u32 flags, u32 *handle);
|
|
int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file,
|
|
uintptr_t ptr, u32 size, u32 flags, u32 *handle);
|
|
u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);
|
|
u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);
|
|
u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu, unsigned short id);
|
|
void etnaviv_buffer_end(struct etnaviv_gpu *gpu);
|
|
void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);
|
|
void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,
|
|
struct etnaviv_iommu_context *mmu,
|
|
unsigned int event, struct etnaviv_cmdbuf *cmdbuf);
|
|
void etnaviv_validate_init(void);
|
|
bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu,
|
|
u32 *stream, unsigned int size,
|
|
struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv,
|
|
struct seq_file *m);
|
|
#endif
|
|
|
|
#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
|
|
#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
|
|
|
|
/*
|
|
* Return the storage size of a structure with a variable length array.
|
|
* The array is nelem elements of elem_size, where the base structure
|
|
* is defined by base. If the size overflows size_t, return zero.
|
|
*/
|
|
static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base)
|
|
{
|
|
if (elem_size && nelem > (SIZE_MAX - base) / elem_size)
|
|
return 0;
|
|
return base + nelem * elem_size;
|
|
}
|
|
|
|
/*
|
|
* Etnaviv timeouts are specified wrt CLOCK_MONOTONIC, not jiffies.
|
|
* We need to calculate the timeout in terms of number of jiffies
|
|
* between the specified timeout and the current CLOCK_MONOTONIC time.
|
|
*/
|
|
static inline unsigned long etnaviv_timeout_to_jiffies(
|
|
const struct drm_etnaviv_timespec *timeout)
|
|
{
|
|
struct timespec64 ts, to = {
|
|
.tv_sec = timeout->tv_sec,
|
|
.tv_nsec = timeout->tv_nsec,
|
|
};
|
|
|
|
ktime_get_ts64(&ts);
|
|
|
|
/* timeouts before "now" have already expired */
|
|
if (timespec64_compare(&to, &ts) <= 0)
|
|
return 0;
|
|
|
|
ts = timespec64_sub(to, ts);
|
|
|
|
return timespec64_to_jiffies(&ts);
|
|
}
|
|
|
|
#endif /* __ETNAVIV_DRV_H__ */
|