// SPDX-License-Identifier: GPL-2.0-only OR MIT
/* Copyright (c) 2023 Imagination Technologies Ltd. */
#include "pvr_free_list.h"
#include "pvr_hwrt.h"
#include "pvr_gem.h"
#include "pvr_rogue_cr_defs_client.h"
#include "pvr_rogue_fwif.h"
#include <drm/drm_gem.h>
#include <linux/bitops.h>
#include <linux/math.h>
#include <linux/slab.h>
#include <linux/xarray.h>
#include <uapi/drm/pvr_drm.h>
static_assert(ROGUE_FWIF_NUM_RTDATAS == 2);
static_assert(ROGUE_FWIF_NUM_GEOMDATAS == 1);
static_assert(ROGUE_FWIF_NUM_RTDATA_FREELISTS == 2);
/*
* struct pvr_rt_mtile_info - Render target macrotile information
*/
struct pvr_rt_mtile_info {
u32 mtile_x[3];
u32 mtile_y[3];
u32 tile_max_x;
u32 tile_max_y;
u32 tile_size_x;
u32 tile_size_y;
u32 num_tiles_x;
u32 num_tiles_y;
};
/* Size of Shadow Render Target Cache entry */
#define SRTC_ENTRY_SIZE sizeof(u32)
/* Size of Renders Accumulation Array entry */
#define RAA_ENTRY_SIZE sizeof(u32)
static int
hwrt_init_kernel_structure(struct pvr_file *pvr_file,
struct drm_pvr_ioctl_create_hwrt_dataset_args *args,
struct pvr_hwrt_dataset *hwrt)
{
struct pvr_device *pvr_dev = pvr_file->pvr_dev;
int err;
int i;
hwrt->pvr_dev = pvr_dev;
hwrt->max_rts = args->layers;
/* Get pointers to the free lists */
for (i = 0; i < ARRAY_SIZE(hwrt->free_lists); i++) {
hwrt->free_lists[i] = pvr_free_list_lookup(pvr_file, args->free_list_handles[i]);
if (!hwrt->free_lists[i]) {
err = -EINVAL;
goto err_put_free_lists;
}
}
if (hwrt->free_lists[ROGUE_FW_LOCAL_FREELIST]->current_pages <
pvr_get_free_list_min_pages(pvr_dev)) {
err = -EINVAL;
goto err_put_free_lists;
}
return 0;
err_put_free_lists:
for (i = 0; i < ARRAY_SIZE(hwrt->free_lists); i++) {
pvr_free_list_put(hwrt->free_lists[i]);
hwrt->free_lists[i] = NULL;
}
return err;
}
static void
hwrt_fini_kernel_structure(struct pvr_hwrt_dataset *hwrt)
{
int i;
for (i = 0; i < ARRAY_SIZE(hwrt->free_lists); i++) {
pvr_free_list_put(hwrt->free_lists[i]);
hwrt->free_lists[i] = NULL;
}
}
static void
hwrt_fini_common_fw_structure(struct pvr_hwrt_dataset *hwrt)
{
pvr_fw_object_destroy(hwrt->common_fw_obj);
}
static int
get_cr_isp_mtile_size_val(struct pvr_device *pvr_dev, u32 samples,
struct pvr_rt_mtile_info *info, u32 *value_out)
{
u32 x = info->mtile_x[0];
u32 y = info->mtile_y[0];
u32 samples_per_pixel;
int err;
err = PVR_FEATURE_VALUE(pvr_dev, isp_samples_per_pixel, &samples_per_pixel);
if (err)
return err;
if (samples_per_pixel == 1) {
if (samples >= 4)
x <<= 1;
if (samples >= 2)
y <<= 1;
} else if (samples_per_pixel == 2) {
if (samples >= 8)
x <<= 1;
if (samples >= 4)
y <<= 1;
} else if (samples_per_pixel == 4) {
if (samples >= 8)
y <<= 1;
} else {
WARN(true, "Unsupported ISP samples per pixel value");
return -EINVAL;
}
*value_out = ((x << ROGUE_CR_ISP_MTILE_SIZE_X_SHIFT) & ~ROGUE_CR_ISP_MTILE_SIZE_X_CLRMSK) |
((y << ROGUE_CR_ISP_MTILE_SIZE_Y_SHIFT) & ~ROGUE_CR_ISP_MTILE_SIZE_Y_CLRMSK);
return 0;
}
static int
get_cr_multisamplectl_val(u32 samples, bool y_flip, u64 *value_out)
{
static const struct {
u8 x[8];
u8 y[8];
} sample_positions[4] = {
/* 1 sample */
{
.x = { 8 },
.y = { 8 },
},
/* 2 samples */
{
.x = { 12, 4 },
.y = { 12, 4 },
},
/* 4 samples */
{
.x = { 6, 14, 2, 10 },
.y = { 2, 6, 10, 14 },
},
/* 8 samples */
{
.x = { 9, 7, 13, 5, 3, 1, 11, 15 },
.y = { 5, 11, 9, 3, 13, 7, 15, 1 },
},
};
const int idx = fls(samples) - 1;
u64 value = 0;
if (idx < 0 || idx > 3)
return -EINVAL;
for (u32 i = 0; i < 8; i++) {
value |= ((u64)sample_positions[idx].x[i]) << (i * 8);
if (y_flip)
value |= (((u64)(16 - sample_positions[idx].y[i]) & 0xf)) << (i * 8 + 4);
else
value |= ((u64)sample_positions[idx].y[i]) << (i * 8 + 4);
}
*value_out = value;
return 0;
}
static int
get_cr_te_aa_val(struct pvr_device *pvr_dev, u32 samples, u32 *value_out)
{
u32 samples_per_pixel;
u32 value = 0;
int err = 0;
err = PVR_FEATURE_VALUE(pvr_dev, isp_samples_per_pixel, &samples_per_pixel);
if (err)
return err;
switch (samples_per_pixel) {
case 1:
if (samples >= 2)
value |= ROGUE_CR_TE_AA_Y_EN;
if (samples >= 4)
value |= ROGUE_CR_TE_AA_X_EN;
break;
case 2:
if (samples >= 2)
value |= ROGUE_CR_TE_AA_X2_EN;
if (samples >= 4)
value |= ROGUE_CR_TE_AA_Y_EN;
if (samples >= 8)
value |= ROGUE_CR_TE_AA_X_EN;
break;
case 4:
if (samples >= 2)
value |= ROGUE_CR_TE_AA_X2_EN;
if (samples >= 4)
value |= ROGUE_CR_TE_AA_Y2_EN;
if (samples >= 8)
value |= ROGUE_CR_TE_AA_Y_EN;
break;
default:
WARN(true, "Unsupported ISP samples per pixel value");
return -EINVAL;
}
*value_out = value;
return 0;
}
static void
hwrtdata_common_init(void *cpu_ptr, void *priv)
{
struct pvr_hwrt_dataset *hwrt = priv;
memcpy(cpu_ptr, &hwrt->common, sizeof(hwrt->common));
}
static int
hwrt_init_common_fw_structure(struct pvr_file *pvr_file,
struct drm_pvr_ioctl_create_hwrt_dataset_args *args,
struct pvr_hwrt_dataset *hwrt)
{
struct drm_pvr_create_hwrt_geom_data_args *geom_data_args = &args->geom_data_args;
struct pvr_device *pvr_dev = pvr_file->pvr_dev;
struct pvr_rt_mtile_info info;
int err;
err = PVR_FEATURE_VALUE(pvr_dev, tile_size_x, &info.tile_size_x);
if (WARN_ON(err))
return err;
err = PVR_FEATURE_VALUE(pvr_dev, tile_size_y, &info.tile_size_y);
if (WARN_ON(err))
return err;
info.num_tiles_x = DIV_ROUND_UP(args->width, info.tile_size_x);
info.num_tiles_y = DIV_ROUND_UP(args->height, info.tile_size_y);
if (PVR_HAS_FEATURE(pvr_dev, simple_parameter_format_version)) {
u32 parameter_format;
err = PVR_FEATURE_VALUE(pvr_dev, simple_parameter_format_version,
¶meter_format);
if (WARN_ON(err))
return err;
WARN_ON(parameter_format != 2);
/*
* Set up 16 macrotiles with a multiple of 2x2 tiles per macrotile, which is
* aligned to a tile group.
*/
info.mtile_x[0] = DIV_ROUND_UP(info.num_tiles_x, 8) * 2;
info.mtile_y[0] = DIV_ROUND_UP(info.num_tiles_y, 8) * 2;
info.mtile_x[1] = 0;
info.mtile_y[1] = 0;
info.mtile_x[2] = 0;
info.mtile_y[2] = 0;
info.tile_max_x = round_up(info.num_tiles_x, 2) - 1;
info.tile_max_y = round_up(info.num_tiles_y, 2) - 1;
} else {
/* Set up 16 macrotiles with a multiple of 4x4 tiles per macrotile. */
info.mtile_x[0] = round_up(DIV_ROUND_UP(info.num_tiles_x, 4), 4);
info.mtile_y[0] = round_up(DIV_ROUND_UP(info.num_tiles_y, 4), 4);
info.mtile_x[1] = info.mtile_x[0] * 2;
info.mtile_y[1] = info.mtile_y[0] * 2;
info.mtile_x[2] = info.mtile_x[0] * 3;
info.mtile_y[2] = info.mtile_y[0] * 3;
info.tile_max_x = info.num_tiles_x - 1;
info.tile_max_y = info.num_tiles_y - 1;
}
hwrt->common.geom_caches_need_zeroing = false;
hwrt->common.isp_merge_lower_x = args->isp_merge_lower_x;
hwrt->common.isp_merge_lower_y = args->isp_merge_lower_y;
hwrt->common.isp_merge_upper_x = args->isp_merge_upper_x;
hwrt->common.isp_merge_upper_y = args->isp_merge_upper_y;
hwrt->common.isp_merge_scale_x = args->isp_merge_scale_x;
hwrt->common.isp_merge_scale_y = args->isp_merge_scale_y;
err = get_cr_multisamplectl_val(args->samples, false,
&hwrt->common.multi_sample_ctl);
if (err)
return err;
err = get_cr_multisamplectl_val(args->samples, true,
&hwrt->common.flipped_multi_sample_ctl);
if (err)
return err;
hwrt->common.mtile_stride = info.mtile_x[0] * info.mtile_y[0];
err = get_cr_te_aa_val(pvr_dev, args->samples, &hwrt->common.teaa);
if (err)
return err;
hwrt->common.screen_pixel_max =
(((args->width - 1) << ROGUE_CR_PPP_SCREEN_PIXXMAX_SHIFT) &
~ROGUE_CR_PPP_SCREEN_PIXXMAX_CLRMSK) |
(((args->height - 1) << ROGUE_CR_PPP_SCREEN_PIXYMAX_SHIFT) &
~ROGUE_CR_PPP_SCREEN_PIXYMAX_CLRMSK);
hwrt->common.te_screen =
((info.tile_max_x << ROGUE_CR_TE_SCREEN_XMAX_SHIFT) &
~ROGUE_CR_TE_SCREEN_XMAX_CLRMSK) |
((info.tile_max_y << ROGUE_CR_TE_SCREEN_YMAX_SHIFT) &
~ROGUE_CR_TE_SCREEN_YMAX_CLRMSK);
hwrt->common.te_mtile1 =
((info.mtile_x[0] << ROGUE_CR_TE_MTILE1_X1_SHIFT) & ~ROGUE_CR_TE_MTILE1_X1_CLRMSK) |
((info.mtile_x[1] << ROGUE_CR_TE_MTILE1_X2_SHIFT) & ~ROGUE_CR_TE_MTILE1_X2_CLRMSK) |
((info.mtile_x[2] << ROGUE_CR_TE_MTILE1_X3_SHIFT) & ~ROGUE_CR_TE_MTILE1_X3_CLRMSK);
hwrt->common.te_mtile2 =
((info.mtile_y[0] << ROGUE_CR_TE_MTILE2_Y1_SHIFT) & ~ROGUE_CR_TE_MTILE2_Y1_CLRMSK) |
((info.mtile_y[1] << ROGUE_CR_TE_MTILE2_Y2_SHIFT) & ~ROGUE_CR_TE_MTILE2_Y2_CLRMSK) |
((info.mtile_y[2] << ROGUE_CR_TE_MTILE2_Y3_SHIFT) & ~ROGUE_CR_TE_MTILE2_Y3_CLRMSK);
err = get_cr_isp_mtile_size_val(pvr_dev, args->samples, &info,
&hwrt->common.isp_mtile_size);
if (err)
return err;
hwrt->common.tpc_stride = geom_data_args->tpc_stride;
hwrt->common.tpc_size = geom_data_args->tpc_size;
hwrt->common.rgn_header_size = args->region_header_size;
err = pvr_fw_object_create(pvr_dev, sizeof(struct rogue_fwif_hwrtdata_common),
PVR_BO_FW_FLAGS_DEVICE_UNCACHED, hwrtdata_common_init, hwrt,
&hwrt->common_fw_obj);
return err;
}
static void
hwrt_fw_data_init(void *cpu_ptr, void *priv)
{
struct pvr_hwrt_data *hwrt_data = priv;
memcpy(cpu_ptr, &hwrt_data->data, sizeof(hwrt_data->data));
}
static int
hwrt_data_init_fw_structure(struct pvr_file *pvr_file,
struct pvr_hwrt_dataset *hwrt,
struct drm_pvr_ioctl_create_hwrt_dataset_args *args,
struct drm_pvr_create_hwrt_rt_data_args *rt_data_args,
struct pvr_hwrt_data *hwrt_data)
{
struct drm_pvr_create_hwrt_geom_data_args *geom_data_args = &args->geom_data_args;
struct pvr_device *pvr_dev = pvr_file->pvr_dev;
struct rogue_fwif_rta_ctl *rta_ctl;
int free_list_i;
int err;
pvr_fw_object_get_fw_addr(hwrt->common_fw_obj,
&hwrt_data->data.hwrt_data_common_fw_addr);
for (free_list_i = 0; free_list_i < ARRAY_SIZE(hwrt->free_lists); free_list_i++) {
pvr_fw_object_get_fw_addr(hwrt->free_lists[free_list_i]->fw_obj,
&hwrt_data->data.freelists_fw_addr[free_list_i]);
}
hwrt_data->data.tail_ptrs_dev_addr = geom_data_args->tpc_dev_addr;
hwrt_data->data.vheap_table_dev_addr = geom_data_args->vheap_table_dev_addr;
hwrt_data->data.rtc_dev_addr = geom_data_args->rtc_dev_addr;
hwrt_data->data.pm_mlist_dev_addr = rt_data_args->pm_mlist_dev_addr;
hwrt_data->data.macrotile_array_dev_addr = rt_data_args->macrotile_array_dev_addr;
hwrt_data->data.rgn_header_dev_addr = rt_data_args->region_header_dev_addr;
rta_ctl = &hwrt_data->data.rta_ctl;
rta_ctl->render_target_index = 0;
rta_ctl->active_render_targets = 0;
rta_ctl->valid_render_targets_fw_addr = 0;
rta_ctl->rta_num_partial_renders_fw_addr = 0;
rta_ctl->max_rts = args->layers;
if (args->layers > 1) {
err = pvr_fw_object_create(pvr_dev, args->layers * SRTC_ENTRY_SIZE,
PVR_BO_FW_FLAGS_DEVICE_UNCACHED,
NULL, NULL, &hwrt_data->srtc_obj);
if (err)
return err;
pvr_fw_object_get_fw_addr(hwrt_data->srtc_obj,
&rta_ctl->valid_render_targets_fw_addr);
err = pvr_fw_object_create(pvr_dev, args->layers * RAA_ENTRY_SIZE,
PVR_BO_FW_FLAGS_DEVICE_UNCACHED,
NULL, NULL, &hwrt_data->raa_obj);
if (err)
goto err_put_shadow_rt_cache;
pvr_fw_object_get_fw_addr(hwrt_data->raa_obj,
&rta_ctl->rta_num_partial_renders_fw_addr);
}
err = pvr_fw_object_create(pvr_dev, sizeof(struct rogue_fwif_hwrtdata),
PVR_BO_FW_FLAGS_DEVICE_UNCACHED,
hwrt_fw_data_init, hwrt_data, &hwrt_data->fw_obj);
if (err)
goto err_put_raa_obj;
pvr_free_list_add_hwrt(hwrt->free_lists[0], hwrt_data);
return 0;
err_put_raa_obj:
if (args->layers > 1)
pvr_fw_object_destroy(hwrt_data->raa_obj);
err_put_shadow_rt_cache:
if (args->layers > 1)
pvr_fw_object_destroy(hwrt_data->srtc_obj);
return err;
}
static void
hwrt_data_fini_fw_structure(struct pvr_hwrt_dataset *hwrt, int hwrt_nr)
{
struct pvr_hwrt_data *hwrt_data = &hwrt->data[hwrt_nr];
pvr_free_list_remove_hwrt(hwrt->free_lists[0], hwrt_data);
if (hwrt->max_rts > 1) {
pvr_fw_object_destroy(hwrt_data->raa_obj);
pvr_fw_object_destroy(hwrt_data->srtc_obj);
}
pvr_fw_object_destroy(hwrt_data->fw_obj);
}
/**
* pvr_hwrt_dataset_create() - Create a new HWRT dataset
* @pvr_file: Pointer to pvr_file structure.
* @args: Creation arguments from userspace.
*
* Return:
* * Pointer to new HWRT, or
* * ERR_PTR(-%ENOMEM) on out of memory.
*/
struct pvr_hwrt_dataset *
pvr_hwrt_dataset_create(struct pvr_file *pvr_file,
struct drm_pvr_ioctl_create_hwrt_dataset_args *args)
{
struct pvr_hwrt_dataset *hwrt;
int err, i = 0;
/* Create and fill out the kernel structure */
hwrt = kzalloc(sizeof(*hwrt), GFP_KERNEL);
if (!hwrt)
return ERR_PTR(-ENOMEM);
err = hwrt_init_kernel_structure(pvr_file, args, hwrt);
if (err < 0)
goto err_free;
err = hwrt_init_common_fw_structure(pvr_file, args, hwrt);
if (err < 0)
goto err_fini_kernel_structure;
for (; i < ARRAY_SIZE(hwrt->data); i++) {
err = hwrt_data_init_fw_structure(pvr_file, hwrt, args,
&args->rt_data_args[i],
&hwrt->data[i]);
if (err < 0)
goto err_fini_data_structures;
hwrt->data[i].hwrt_dataset = hwrt;
}
kref_init(&hwrt->ref_count);
return hwrt;
err_fini_data_structures:
while (--i >= 0)
hwrt_data_fini_fw_structure(hwrt, i);
err_fini_kernel_structure:
hwrt_fini_kernel_structure(hwrt);
err_free:
kfree(hwrt);
return ERR_PTR(err);
}
static void
pvr_hwrt_dataset_release(struct kref *ref_count)
{
struct pvr_hwrt_dataset *hwrt =
container_of(ref_count, struct pvr_hwrt_dataset, ref_count);
for (int i = ARRAY_SIZE(hwrt->data) - 1; i >= 0; i--) {
WARN_ON(pvr_fw_structure_cleanup(hwrt->pvr_dev, ROGUE_FWIF_CLEANUP_HWRTDATA,
hwrt->data[i].fw_obj, 0));
hwrt_data_fini_fw_structure(hwrt, i);
}
hwrt_fini_common_fw_structure(hwrt);
hwrt_fini_kernel_structure(hwrt);
kfree(hwrt);
}
/**
* pvr_destroy_hwrt_datasets_for_file: Destroy any HWRT datasets associated
* with the given file.
* @pvr_file: Pointer to pvr_file structure.
*
* Removes all HWRT datasets associated with @pvr_file from the device
* hwrt_dataset list and drops initial references. HWRT datasets will then be
* destroyed once all outstanding references are dropped.
*/
void pvr_destroy_hwrt_datasets_for_file(struct pvr_file *pvr_file)
{
struct pvr_hwrt_dataset *hwrt;
unsigned long handle;
xa_for_each(&pvr_file->hwrt_handles, handle, hwrt) {
(void)hwrt;
pvr_hwrt_dataset_put(xa_erase(&pvr_file->hwrt_handles, handle));
}
}
/**
* pvr_hwrt_dataset_put() - Release reference on HWRT dataset
* @hwrt: Pointer to HWRT dataset to release reference on
*/
void
pvr_hwrt_dataset_put(struct pvr_hwrt_dataset *hwrt)
{
if (hwrt)
kref_put(&hwrt->ref_count, pvr_hwrt_dataset_release);
}