cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv40.c

/*
 * Copyright 2013 Red Hat Inc.
 *
 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
 *
 * Authors: Ben Skeggs
 */
#include "ramnv40.h"

#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/init.h>
#include <subdev/bios/pll.h>
#include <subdev/clk/pll.h>
#include <subdev/timer.h>


static int nv40_ram_calc(struct nvkm_ram *base, u32 freq) { struct nv40_ram *ram = nv40_ram(base); struct nvkm_subdev *subdev = &ram->base.fb->subdev; struct nvkm_bios *bios = subdev->device->bios; struct nvbios_pll pll; int N1, M1, N2, M2; int log2P, ret; ret = nvbios_pll_parse(bios, 0x04, &pll); if (ret) { nvkm_error(subdev, "mclk pll data not found\n"); return ret; } ret = nv04_pll_calc(subdev, &pll, freq, &N1, &M1, &N2, &M2, &log2P); if (ret < 0) return ret; ram->ctrl = 0x80000000 | (log2P << 16); ram->ctrl |= min(pll.bias_p + log2P, (int)pll.max_p) << 20; if (N2 == M2) { ram->ctrl |= 0x00000100; ram->coef = (N1 << 8) | M1; } else { ram->ctrl |= 0x40000000; ram->coef = (N2 << 24) | (M2 << 16) | (N1 << 8) | M1; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs227100.00%4100.00%
Total227100.00%4100.00%


static int nv40_ram_prog(struct nvkm_ram *base) { struct nv40_ram *ram = nv40_ram(base); struct nvkm_subdev *subdev = &ram->base.fb->subdev; struct nvkm_device *device = subdev->device; struct nvkm_bios *bios = device->bios; struct bit_entry M; u32 crtc_mask = 0; u8 sr1[2]; int i; /* determine which CRTCs are active, fetch VGA_SR1 for each */ for (i = 0; i < 2; i++) { u32 vbl = nvkm_rd32(device, 0x600808 + (i * 0x2000)); u32 cnt = 0; do { if (vbl != nvkm_rd32(device, 0x600808 + (i * 0x2000))) { nvkm_wr08(device, 0x0c03c4 + (i * 0x2000), 0x01); sr1[i] = nvkm_rd08(device, 0x0c03c5 + (i * 0x2000)); if (!(sr1[i] & 0x20)) crtc_mask |= (1 << i); break; } udelay(1); } while (cnt++ < 32); } /* wait for vblank start on active crtcs, disable memory access */ for (i = 0; i < 2; i++) { if (!(crtc_mask & (1 << i))) continue; nvkm_msec(device, 2000, u32 tmp = nvkm_rd32(device, 0x600808 + (i * 0x2000)); if (!(tmp & 0x00010000)) break; ); nvkm_msec(device, 2000, u32 tmp = nvkm_rd32(device, 0x600808 + (i * 0x2000)); if ( (tmp & 0x00010000)) break; ); nvkm_wr08(device, 0x0c03c4 + (i * 0x2000), 0x01); nvkm_wr08(device, 0x0c03c5 + (i * 0x2000), sr1[i] | 0x20); } /* prepare ram for reclocking */ nvkm_wr32(device, 0x1002d4, 0x00000001); /* precharge */ nvkm_wr32(device, 0x1002d0, 0x00000001); /* refresh */ nvkm_wr32(device, 0x1002d0, 0x00000001); /* refresh */ nvkm_mask(device, 0x100210, 0x80000000, 0x00000000); /* no auto refresh */ nvkm_wr32(device, 0x1002dc, 0x00000001); /* enable self-refresh */ /* change the PLL of each memory partition */ nvkm_mask(device, 0x00c040, 0x0000c000, 0x00000000); switch (device->chipset) { case 0x40: case 0x45: case 0x41: case 0x42: case 0x47: nvkm_mask(device, 0x004044, 0xc0771100, ram->ctrl); nvkm_mask(device, 0x00402c, 0xc0771100, ram->ctrl); nvkm_wr32(device, 0x004048, ram->coef); nvkm_wr32(device, 0x004030, ram->coef); case 0x43: case 0x49: case 0x4b: nvkm_mask(device, 0x004038, 0xc0771100, ram->ctrl); nvkm_wr32(device, 0x00403c, ram->coef); default: nvkm_mask(device, 0x004020, 0xc0771100, ram->ctrl); nvkm_wr32(device, 0x004024, ram->coef); break; } udelay(100); nvkm_mask(device, 0x00c040, 0x0000c000, 0x0000c000); /* re-enable normal operation of memory controller */ nvkm_wr32(device, 0x1002dc, 0x00000000); nvkm_mask(device, 0x100210, 0x80000000, 0x80000000); udelay(100); /* execute memory reset script from vbios */ if (!bit_entry(bios, 'M', &M)) { struct nvbios_init init = { .subdev = subdev, .bios = bios, .offset = nvbios_rd16(bios, M.offset + 0x00), .execute = 1, }; nvbios_exec(&init); } /* make sure we're in vblank (hopefully the same one as before), and * then re-enable crtc memory access */ for (i = 0; i < 2; i++) { if (!(crtc_mask & (1 << i))) continue; nvkm_msec(device, 2000, u32 tmp = nvkm_rd32(device, 0x600808 + (i * 0x2000)); if ( (tmp & 0x00010000)) break; ); nvkm_wr08(device, 0x0c03c4 + (i * 0x2000), 0x01); nvkm_wr08(device, 0x0c03c5 + (i * 0x2000), sr1[i]); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs667100.00%5100.00%
Total667100.00%5100.00%


static void nv40_ram_tidy(struct nvkm_ram *base) { }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs10100.00%2100.00%
Total10100.00%2100.00%

static const struct nvkm_ram_func nv40_ram_func = { .calc = nv40_ram_calc, .prog = nv40_ram_prog, .tidy = nv40_ram_tidy, };
int nv40_ram_new_(struct nvkm_fb *fb, enum nvkm_ram_type type, u64 size, u32 tags, struct nvkm_ram **pram) { struct nv40_ram *ram; if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL))) return -ENOMEM; *pram = &ram->base; return nvkm_ram_ctor(&nv40_ram_func, fb, type, size, tags, &ram->base); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs81100.00%2100.00%
Total81100.00%2100.00%


int nv40_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) { struct nvkm_device *device = fb->subdev.device; u32 pbus1218 = nvkm_rd32(device, 0x001218); u32 size = nvkm_rd32(device, 0x10020c) & 0xff000000; u32 tags = nvkm_rd32(device, 0x100320); enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN; int ret; switch (pbus1218 & 0x00000300) { case 0x00000000: type = NVKM_RAM_TYPE_SDRAM; break; case 0x00000100: type = NVKM_RAM_TYPE_DDR1 ; break; case 0x00000200: type = NVKM_RAM_TYPE_GDDR3; break; case 0x00000300: type = NVKM_RAM_TYPE_DDR2 ; break; } ret = nv40_ram_new_(fb, type, size, tags, pram); if (ret) return ret; (*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs153100.00%3100.00%
Total153100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs1183100.00%9100.00%
Total1183100.00%9100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.