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// SPDX-License-Identifier: GPL-2.0
#ifndef __NVKM_PMU_MEMX_H__
#define __NVKM_PMU_MEMX_H__
#include "priv.h"
struct nvkm_memx {
struct nvkm_pmu *pmu;
u32 base;
u32 size;
struct {
u32 mthd;
u32 size;
u32 data[64];
} c;
};
static void
memx_out(struct nvkm_memx *memx)
{
struct nvkm_device *device = memx->pmu->subdev.device;
int i;
if (memx->c.mthd) {
nvkm_wr32(device, 0x10a1c4, (memx->c.size << 16) | memx->c.mthd);
for (i = 0; i < memx->c.size; i++)
nvkm_wr32(device, 0x10a1c4, memx->c.data[i]);
memx->c.mthd = 0;
memx->c.size = 0;
}
}
static void
memx_cmd(struct nvkm_memx *memx, u32 mthd, u32 size, u32 data[])
{
if ((memx->c.size + size >= ARRAY_SIZE(memx->c.data)) ||
(memx->c.mthd && memx->c.mthd != mthd))
memx_out(memx);
memcpy(&memx->c.data[memx->c.size], data, size * sizeof(data[0]));
memx->c.size += size;
memx->c.mthd = mthd;
}
int
nvkm_memx_init(struct nvkm_pmu *pmu, struct nvkm_memx **pmemx)
{
struct nvkm_device *device = pmu->subdev.device;
struct nvkm_memx *memx;
u32 reply[2];
int ret;
ret = nvkm_pmu_send(pmu, reply, PROC_MEMX, MEMX_MSG_INFO,
MEMX_INFO_DATA, 0);
if (ret)
return ret;
memx = *pmemx = kzalloc(sizeof(*memx), GFP_KERNEL);
if (!memx)
return -ENOMEM;
memx->pmu = pmu;
memx->base = reply[0];
memx->size = reply[1];
/* acquire data segment access */
do {
nvkm_wr32(device, 0x10a580, 0x00000003);
} while (nvkm_rd32(device, 0x10a580) != 0x00000003);
nvkm_wr32(device, 0x10a1c0, 0x01000000 | memx->base);
return 0;
}
int
nvkm_memx_fini(struct nvkm_memx **pmemx, bool exec)
{
struct nvkm_memx *memx = *pmemx;
struct nvkm_pmu *pmu = memx->pmu;
struct nvkm_subdev *subdev = &pmu->subdev;
struct nvkm_device *device = subdev->device;
u32 finish, reply[2];
/* flush the cache... */
memx_out(memx);
/* release data segment access */
finish = nvkm_rd32(device, 0x10a1c0) & 0x00ffffff;
nvkm_wr32(device, 0x10a580, 0x00000000);
/* call MEMX process to execute the script, and wait for reply */
if (exec) {
nvkm_pmu_send(pmu, reply, PROC_MEMX, MEMX_MSG_EXEC,
memx->base, finish);
nvkm_debug(subdev, "Exec took %uns, PMU_IN %08x\n",
reply[0], reply[1]);
}
kfree(memx);
return 0;
}
void
nvkm_memx_wr32(struct nvkm_memx *memx, u32 addr, u32 data)
{
nvkm_debug(&memx->pmu->subdev, "R[%06x] = %08x\n", addr, data);
memx_cmd(memx, MEMX_WR32, 2, (u32[]){ addr, data });
}
void
nvkm_memx_wait(struct nvkm_memx *memx,
u32 addr, u32 mask, u32 data, u32 nsec)
{
nvkm_debug(&memx->pmu->subdev, "R[%06x] & %08x == %08x, %d us\n",
addr, mask, data, nsec);
memx_cmd(memx, MEMX_WAIT, 4, (u32[]){ addr, mask, data, nsec });
memx_out(memx); /* fuc can't handle multiple */
}
void
nvkm_memx_nsec(struct nvkm_memx *memx, u32 nsec)
{
nvkm_debug(&memx->pmu->subdev, " DELAY = %d ns\n", nsec);
memx_cmd(memx, MEMX_DELAY, 1, (u32[]){ nsec });
memx_out(memx); /* fuc can't handle multiple */
}
void
nvkm_memx_wait_vblank(struct nvkm_memx *memx)
{
struct nvkm_subdev *subdev = &memx->pmu->subdev;
struct nvkm_device *device = subdev->device;
u32 heads, x, y, px = 0;
int i, head_sync;
if (device->chipset < 0xd0) {
heads = nvkm_rd32(device, 0x610050);
for (i = 0; i < 2; i++) {
/* Heuristic: sync to head with biggest resolution */
if (heads & (2 << (i << 3))) {
x = nvkm_rd32(device, 0x610b40 + (0x540 * i));
y = (x & 0xffff0000) >> 16;
x &= 0x0000ffff;
if ((x * y) > px) {
px = (x * y);
head_sync = i;
}
}
}
}
if (px == 0) {
nvkm_debug(subdev, "WAIT VBLANK !NO ACTIVE HEAD\n");
return;
}
nvkm_debug(subdev, "WAIT VBLANK HEAD%d\n", head_sync);
memx_cmd(memx, MEMX_VBLANK, 1, (u32[]){ head_sync });
memx_out(memx); /* fuc can't handle multiple */
}
void
nvkm_memx_train(struct nvkm_memx *memx)
{
nvkm_debug(&memx->pmu->subdev, " MEM TRAIN\n");
memx_cmd(memx, MEMX_TRAIN, 0, NULL);
}
int
nvkm_memx_train_result(struct nvkm_pmu *pmu, u32 *res, int rsize)
{
struct nvkm_device *device = pmu->subdev.device;
u32 reply[2], base, size, i;
int ret;
ret = nvkm_pmu_send(pmu, reply, PROC_MEMX, MEMX_MSG_INFO,
MEMX_INFO_TRAIN, 0);
if (ret)
return ret;
base = reply[0];
size = reply[1] >> 2;
if (size > rsize)
return -ENOMEM;
/* read the packet */
nvkm_wr32(device, 0x10a1c0, 0x02000000 | base);
for (i = 0; i < size; i++)
res[i] = nvkm_rd32(device, 0x10a1c4);
return 0;
}
void
nvkm_memx_block(struct nvkm_memx *memx)
{
nvkm_debug(&memx->pmu->subdev, " HOST BLOCKED\n");
memx_cmd(memx, MEMX_ENTER, 0, NULL);
}
void
nvkm_memx_unblock(struct nvkm_memx *memx)
{
nvkm_debug(&memx->pmu->subdev, " HOST UNBLOCKED\n");
memx_cmd(memx, MEMX_LEAVE, 0, NULL);
}
#endif
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