linux-stable/drivers/gpu/drm/nouveau/nouveau_bios.h
Ilia Mirkin 9936aeeaeb drm/nouveau/nouveau: bios pointers may be unaligned, use proper accessors
This can show up on SPARC or other architectures that don't handle
unaligned accesses. The kernel normally fixes these up, but it shouldn't
have to.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96836
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-10-12 17:29:02 +10:00

177 lines
4.5 KiB
C

/*
* Copyright 2007-2008 Nouveau Project
*
* 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 (including the next
* paragraph) 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 OR COPYRIGHT HOLDERS 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.
*/
#ifndef __NOUVEAU_DISPBIOS_H__
#define __NOUVEAU_DISPBIOS_H__
#define DCB_MAX_NUM_ENTRIES 16
#define DCB_MAX_NUM_I2C_ENTRIES 16
#define DCB_MAX_NUM_GPIO_ENTRIES 32
#define DCB_MAX_NUM_CONNECTOR_ENTRIES 16
#define DCB_LOC_ON_CHIP 0
#define ROM16(x) get_unaligned_le16(&(x))
#define ROM32(x) get_unaligned_le32(&(x))
#define ROMPTR(d,x) ({ \
struct nouveau_drm *drm = nouveau_drm((d)); \
ROM16(x) ? &drm->vbios.data[ROM16(x)] : NULL; \
})
struct bit_entry {
uint8_t id;
uint8_t version;
uint16_t length;
uint16_t offset;
uint8_t *data;
};
int bit_table(struct drm_device *, u8 id, struct bit_entry *);
#include <subdev/bios/dcb.h>
#include <subdev/bios/conn.h>
struct dcb_table {
uint8_t version;
int entries;
struct dcb_output entry[DCB_MAX_NUM_ENTRIES];
};
enum nouveau_or {
DCB_OUTPUT_A = (1 << 0),
DCB_OUTPUT_B = (1 << 1),
DCB_OUTPUT_C = (1 << 2)
};
enum LVDS_script {
/* Order *does* matter here */
LVDS_INIT = 1,
LVDS_RESET,
LVDS_BACKLIGHT_ON,
LVDS_BACKLIGHT_OFF,
LVDS_PANEL_ON,
LVDS_PANEL_OFF
};
struct nvbios {
struct drm_device *dev;
enum {
NVBIOS_BMP,
NVBIOS_BIT
} type;
uint16_t offset;
uint32_t length;
uint8_t *data;
uint8_t chip_version;
uint32_t dactestval;
uint32_t tvdactestval;
uint8_t digital_min_front_porch;
bool fp_no_ddc;
spinlock_t lock;
bool execute;
uint8_t major_version;
uint8_t feature_byte;
bool is_mobile;
uint32_t fmaxvco, fminvco;
bool old_style_init;
uint16_t init_script_tbls_ptr;
uint16_t extra_init_script_tbl_ptr;
uint16_t ram_restrict_tbl_ptr;
uint8_t ram_restrict_group_count;
struct dcb_table dcb;
struct {
int crtchead;
} state;
struct {
uint16_t fptablepointer; /* also used by tmds */
uint16_t fpxlatetableptr;
int xlatwidth;
uint16_t lvdsmanufacturerpointer;
uint16_t fpxlatemanufacturertableptr;
uint16_t mode_ptr;
uint16_t xlated_entry;
bool power_off_for_reset;
bool reset_after_pclk_change;
bool dual_link;
bool link_c_increment;
bool if_is_24bit;
int duallink_transition_clk;
uint8_t strapless_is_24bit;
uint8_t *edid;
/* will need resetting after suspend */
int last_script_invoc;
bool lvds_init_run;
} fp;
struct {
uint16_t output0_script_ptr;
uint16_t output1_script_ptr;
} tmds;
struct {
uint16_t mem_init_tbl_ptr;
uint16_t sdr_seq_tbl_ptr;
uint16_t ddr_seq_tbl_ptr;
struct {
uint8_t crt, tv, panel;
} i2c_indices;
uint16_t lvds_single_a_script_ptr;
} legacy;
};
void *olddcb_table(struct drm_device *);
void *olddcb_outp(struct drm_device *, u8 idx);
int olddcb_outp_foreach(struct drm_device *, void *data,
int (*)(struct drm_device *, void *, int idx, u8 *outp));
u8 *olddcb_conntab(struct drm_device *);
u8 *olddcb_conn(struct drm_device *, u8 idx);
int nouveau_bios_init(struct drm_device *);
void nouveau_bios_takedown(struct drm_device *dev);
int nouveau_run_vbios_init(struct drm_device *);
struct dcb_connector_table_entry *
nouveau_bios_connector_entry(struct drm_device *, int index);
bool nouveau_bios_fp_mode(struct drm_device *, struct drm_display_mode *);
uint8_t *nouveau_bios_embedded_edid(struct drm_device *);
int nouveau_bios_parse_lvds_table(struct drm_device *, int pxclk,
bool *dl, bool *if_is_24bit);
int run_tmds_table(struct drm_device *, struct dcb_output *,
int head, int pxclk);
int call_lvds_script(struct drm_device *, struct dcb_output *, int head,
enum LVDS_script, int pxclk);
#endif