hw.c | Explore in Territory

/*
 * Copyright 2006 Dave Airlie
 * Copyright 2007 Maarten Maathuis
 * Copyright 2007-2009 Stuart Bennett
 *
 * 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 AUTHORS 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.
 */

#include "nouveau_drv.h"
#include "hw.h"

#include <subdev/bios/pll.h>
#include <nvif/timer.h>

#define CHIPSET_NFORCE …
#define CHIPSET_NFORCE2 …

/*
 * misc hw access wrappers/control functions
 */

void
NVWriteVgaSeq(struct drm_device *dev, int head, uint8_t index, uint8_t value)
{ … }

uint8_t
NVReadVgaSeq(struct drm_device *dev, int head, uint8_t index)
{ … }

void
NVWriteVgaGr(struct drm_device *dev, int head, uint8_t index, uint8_t value)
{ … }

uint8_t
NVReadVgaGr(struct drm_device *dev, int head, uint8_t index)
{ … }

/* CR44 takes values 0 (head A), 3 (head B) and 4 (heads tied)
 * it affects only the 8 bit vga io regs, which we access using mmio at
 * 0xc{0,2}3c*, 0x60{1,3}3*, and 0x68{1,3}3d*
 * in general, the set value of cr44 does not matter: reg access works as
 * expected and values can be set for the appropriate head by using a 0x2000
 * offset as required
 * however:
 * a) pre nv40, the head B range of PRMVIO regs at 0xc23c* was not exposed and
 *    cr44 must be set to 0 or 3 for accessing values on the correct head
 *    through the common 0xc03c* addresses
 * b) in tied mode (4) head B is programmed to the values set on head A, and
 *    access using the head B addresses can have strange results, ergo we leave
 *    tied mode in init once we know to what cr44 should be restored on exit
 *
 * the owner parameter is slightly abused:
 * 0 and 1 are treated as head values and so the set value is (owner * 3)
 * other values are treated as literal values to set
 */
void
NVSetOwner(struct drm_device *dev, int owner)
{ … }

void
NVBlankScreen(struct drm_device *dev, int head, bool blank)
{ … }

/*
 * PLL getting
 */

static void
nouveau_hw_decode_pll(struct drm_device *dev, uint32_t reg1, uint32_t pll1,
		      uint32_t pll2, struct nvkm_pll_vals *pllvals)
{ … }

int
nouveau_hw_get_pllvals(struct drm_device *dev, enum nvbios_pll_type plltype,
		       struct nvkm_pll_vals *pllvals)
{ … }

int
nouveau_hw_pllvals_to_clk(struct nvkm_pll_vals *pv)
{ … }

int
nouveau_hw_get_clock(struct drm_device *dev, enum nvbios_pll_type plltype)
{ … }

static void
nouveau_hw_fix_bad_vpll(struct drm_device *dev, int head)
{ … }

/*
 * vga font save/restore
 */

static void nouveau_vga_font_io(struct drm_device *dev,
				void __iomem *iovram,
				bool save, unsigned plane)
{ … }

void
nouveau_hw_save_vga_fonts(struct drm_device *dev, bool save)
{ … }

/*
 * mode state save/load
 */

static void
rd_cio_state(struct drm_device *dev, int head,
	     struct nv04_crtc_reg *crtcstate, int index)
{ … }

static void
wr_cio_state(struct drm_device *dev, int head,
	     struct nv04_crtc_reg *crtcstate, int index)
{ … }

static void
nv_save_state_ramdac(struct drm_device *dev, int head,
		     struct nv04_mode_state *state)
{ … }

static void
nv_load_state_ramdac(struct drm_device *dev, int head,
		     struct nv04_mode_state *state)
{ … }

static void
nv_save_state_vga(struct drm_device *dev, int head,
		  struct nv04_mode_state *state)
{ … }

static void
nv_load_state_vga(struct drm_device *dev, int head,
		  struct nv04_mode_state *state)
{ … }

static void
nv_save_state_ext(struct drm_device *dev, int head,
		  struct nv04_mode_state *state)
{ … }

static void
nv_load_state_ext(struct drm_device *dev, int head,
		  struct nv04_mode_state *state)
{ … }

static void
nv_save_state_palette(struct drm_device *dev, int head,
		      struct nv04_mode_state *state)
{ … }

void
nouveau_hw_load_state_palette(struct drm_device *dev, int head,
			      struct nv04_mode_state *state)
{ … }

void nouveau_hw_save_state(struct drm_device *dev, int head,
			   struct nv04_mode_state *state)
{ … }

void nouveau_hw_load_state(struct drm_device *dev, int head,
			   struct nv04_mode_state *state)
{ … }
linux/drivers/gpu/drm/nouveau/dispnv04/hw.c
