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linux/drivers/video/fbdev/savage/savagefb.h
Luis R. Rodriguez 4d811d6c78 video: fbdev: savagefb: use arch_phys_wc_add() and ioremap_wc() 
This driver uses the same area for MTRR as for the ioremap().
Convert the driver from using the x86 specific MTRR code to
the architecture agnostic arch_phys_wc_add(). arch_phys_wc_add()
will avoid MTRR if write-combining is available, in order to
take advantage of that also ensure the ioremap'd area is requested
as write-combining.

There are a few motivations for this:

a) Take advantage of PAT when available

b) Help bury MTRR code away, MTRR is architecture specific and on
   x86 its replaced by PAT

c) Help with the goal of eventually using _PAGE_CACHE_UC over
   _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit
   de33c442e titled "x86 PAT: fix performance drop for glx,
   use UC minus for ioremap(), ioremap_nocache() and
   pci_mmap_page_range()")

The conversion done is expressed by the following Coccinelle
SmPL patch, it additionally required manual intervention to
address all the #ifdery and removal of redundant things which
arch_phys_wc_add() already addresses such as verbose message
about when MTRR fails and doing nothing when we didn't get
an MTRR.

@ mtrr_found @
expression index, base, size;
@@

-index = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1);
+index = arch_phys_wc_add(base, size);

@ mtrr_rm depends on mtrr_found @
expression mtrr_found.index, mtrr_found.base, mtrr_found.size;
@@

-mtrr_del(index, base, size);
+arch_phys_wc_del(index);

@ mtrr_rm_zero_arg depends on mtrr_found @
expression mtrr_found.index;
@@

-mtrr_del(index, 0, 0);
+arch_phys_wc_del(index);

@ mtrr_rm_fb_info depends on mtrr_found @
struct fb_info *info;
expression mtrr_found.index;
@@

-mtrr_del(index, info->fix.smem_start, info->fix.smem_len);
+arch_phys_wc_del(index);

@ ioremap_replace_nocache depends on mtrr_found @
struct fb_info *info;
expression base, size;
@@

-info->screen_base = ioremap_nocache(base, size);
+info->screen_base = ioremap_wc(base, size);

@ ioremap_replace_default depends on mtrr_found @
struct fb_info *info;
expression base, size;
@@

-info->screen_base = ioremap(base, size);
+info->screen_base = ioremap_wc(base, size);

Generated-by: Coccinelle SmPL
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-fbdev@vger.kernel.org
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-03 12:41:50 +03:00

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/*
* linux/drivers/video/savagefb.h -- S3 Savage Framebuffer Driver
*
* Copyright (c) 2001 Denis Oliver Kropp <dok@convergence.de>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
*/
#ifndef __SAVAGEFB_H__
#define __SAVAGEFB_H__
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/mutex.h>
#include <video/vga.h>
#include "../edid.h"
#ifdef SAVAGEFB_DEBUG
# define DBG(x) printk (KERN_DEBUG "savagefb: %s\n", (x));
#else
# define DBG(x)
# define SavagePrintRegs(...)
#endif
#define PCI_CHIP_SAVAGE4 0x8a22
#define PCI_CHIP_SAVAGE3D 0x8a20
#define PCI_CHIP_SAVAGE3D_MV 0x8a21
#define PCI_CHIP_SAVAGE2000 0x9102
#define PCI_CHIP_SAVAGE_MX_MV 0x8c10
#define PCI_CHIP_SAVAGE_MX 0x8c11
#define PCI_CHIP_SAVAGE_IX_MV 0x8c12
#define PCI_CHIP_SAVAGE_IX 0x8c13
#define PCI_CHIP_PROSAVAGE_PM 0x8a25
#define PCI_CHIP_PROSAVAGE_KM 0x8a26
#define PCI_CHIP_S3TWISTER_P 0x8d01
#define PCI_CHIP_S3TWISTER_K 0x8d02
#define PCI_CHIP_PROSAVAGE_DDR 0x8d03
#define PCI_CHIP_PROSAVAGE_DDRK 0x8d04
#define PCI_CHIP_SUPSAV_MX128 0x8c22
#define PCI_CHIP_SUPSAV_MX64 0x8c24
#define PCI_CHIP_SUPSAV_MX64C 0x8c26
#define PCI_CHIP_SUPSAV_IX128SDR 0x8c2a
#define PCI_CHIP_SUPSAV_IX128DDR 0x8c2b
#define PCI_CHIP_SUPSAV_IX64SDR 0x8c2c
#define PCI_CHIP_SUPSAV_IX64DDR 0x8c2d
#define PCI_CHIP_SUPSAV_IXCSDR 0x8c2e
#define PCI_CHIP_SUPSAV_IXCDDR 0x8c2f
#define S3_SAVAGE_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE2000))
#define S3_SAVAGE3D_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX))
#define S3_SAVAGE4_SERIES(chip) ((chip>=S3_SAVAGE4) && (chip<=S3_PROSAVAGEDDR))
#define S3_SAVAGE_MOBILE_SERIES(chip) ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE))
#define S3_MOBILE_TWISTER_SERIES(chip) ((chip==S3_TWISTER) || (chip==S3_PROSAVAGEDDR))
/* Chip tags. These are used to group the adapters into
* related families.
*/
typedef enum {
S3_UNKNOWN = 0,
S3_SAVAGE3D,
S3_SAVAGE_MX,
S3_SAVAGE4,
S3_PROSAVAGE,
S3_TWISTER,
S3_PROSAVAGEDDR,
S3_SUPERSAVAGE,
S3_SAVAGE2000,
S3_LAST
} savage_chipset;
#define BIOS_BSIZE 1024
#define BIOS_BASE 0xc0000
#define SAVAGE_NEWMMIO_REGBASE_S3 0x1000000 /* 16MB */
#define SAVAGE_NEWMMIO_REGBASE_S4 0x0000000
#define SAVAGE_NEWMMIO_REGSIZE 0x0080000 /* 512kb */
#define SAVAGE_NEWMMIO_VGABASE 0x8000
#define BASE_FREQ 14318
#define HALF_BASE_FREQ 7159
#define FIFO_CONTROL_REG 0x8200
#define MIU_CONTROL_REG 0x8204
#define STREAMS_TIMEOUT_REG 0x8208
#define MISC_TIMEOUT_REG 0x820c
#define MONO_PAT_0 0xa4e8
#define MONO_PAT_1 0xa4ec
#define MAXFIFO 0x7f00
#define BCI_CMD_NOP 0x40000000
#define BCI_CMD_SETREG 0x96000000
#define BCI_CMD_RECT 0x48000000
#define BCI_CMD_RECT_XP 0x01000000
#define BCI_CMD_RECT_YP 0x02000000
#define BCI_CMD_SEND_COLOR 0x00008000
#define BCI_CMD_DEST_GBD 0x00000000
#define BCI_CMD_SRC_GBD 0x00000020
#define BCI_CMD_SRC_SOLID 0x00000000
#define BCI_CMD_SRC_MONO 0x00000060
#define BCI_CMD_CLIP_NEW 0x00006000
#define BCI_CMD_CLIP_LR 0x00004000
#define BCI_CLIP_LR(l, r) ((((r) << 16) | (l)) & 0x0FFF0FFF)
#define BCI_CLIP_TL(t, l) ((((t) << 16) | (l)) & 0x0FFF0FFF)
#define BCI_CLIP_BR(b, r) ((((b) << 16) | (r)) & 0x0FFF0FFF)
#define BCI_W_H(w, h) (((h) << 16) | ((w) & 0xFFF))
#define BCI_X_Y(x, y) (((y) << 16) | ((x) & 0xFFF))
#define BCI_GBD1 0xE0
#define BCI_GBD2 0xE1
#define BCI_BUFFER_OFFSET 0x10000
#define BCI_SIZE 0x4000
#define BCI_SEND(dw) writel(dw, par->bci_base + par->bci_ptr++)
#define BCI_CMD_GET_ROP(cmd) (((cmd) >> 16) & 0xFF)
#define BCI_CMD_SET_ROP(cmd, rop) ((cmd) |= ((rop & 0xFF) << 16))
#define BCI_CMD_SEND_COLOR 0x00008000
#define DISP_CRT 1
#define DISP_LCD 2
#define DISP_DFP 3
struct xtimings {
unsigned int Clock;
unsigned int HDisplay;
unsigned int HSyncStart;
unsigned int HSyncEnd;
unsigned int HTotal;
unsigned int HAdjusted;
unsigned int VDisplay;
unsigned int VSyncStart;
unsigned int VSyncEnd;
unsigned int VTotal;
unsigned int sync;
int dblscan;
int interlaced;
};
struct savage_reg {
unsigned char MiscOutReg; /* Misc */
unsigned char CRTC[25]; /* Crtc Controller */
unsigned char Sequencer[5]; /* Video Sequencer */
unsigned char Graphics[9]; /* Video Graphics */
unsigned char Attribute[21]; /* Video Attribute */
unsigned int mode, refresh;
unsigned char SR08, SR0E, SR0F;
unsigned char SR10, SR11, SR12, SR13, SR15, SR18, SR29, SR30;
unsigned char SR54[8];
unsigned char Clock;
unsigned char CR31, CR32, CR33, CR34, CR36, CR3A, CR3B, CR3C;
unsigned char CR40, CR41, CR42, CR43, CR45;
unsigned char CR50, CR51, CR53, CR55, CR58, CR5B, CR5D, CR5E;
unsigned char CR60, CR63, CR65, CR66, CR67, CR68, CR69, CR6D, CR6F;
unsigned char CR86, CR88;
unsigned char CR90, CR91, CRB0;
unsigned int STREAMS[22]; /* yuck, streams regs */
unsigned int MMPR0, MMPR1, MMPR2, MMPR3;
};
/* --------------------------------------------------------------------- */
#define NR_PALETTE 256
struct savagefb_par;
struct savagefb_i2c_chan {
struct savagefb_par *par;
struct i2c_adapter adapter;
struct i2c_algo_bit_data algo;
volatile u8 __iomem *ioaddr;
u32 reg;
};
struct savagefb_par {
struct pci_dev *pcidev;
savage_chipset chip;
struct savagefb_i2c_chan chan;
struct savage_reg state;
struct savage_reg save;
struct savage_reg initial;
struct vgastate vgastate;
struct mutex open_lock;
unsigned char *edid;
u32 pseudo_palette[16];
u32 open_count;
int paletteEnabled;
int pm_state;
int display_type;
int dvi;
int crtonly;
int dacSpeedBpp;
int maxClock;
int minClock;
int numClocks;
int clock[4];
int MCLK, REFCLK, LCDclk;
struct {
void __iomem *vbase;
u32 pbase;
u32 len;
int wc_cookie;
} video;
struct {
void __iomem *vbase;
u32 pbase;
u32 len;
} mmio;
volatile u32 __iomem *bci_base;
unsigned int bci_ptr;
u32 cob_offset;
u32 cob_size;
int cob_index;
void (*SavageWaitIdle) (struct savagefb_par *par);
void (*SavageWaitFifo) (struct savagefb_par *par, int space);
int HorizScaleFactor;
/* Panels size */
int SavagePanelWidth;
int SavagePanelHeight;
struct {
u16 red, green, blue, transp;
} palette[NR_PALETTE];
int depth;
int vwidth;
};
#define BCI_BD_BW_DISABLE 0x10000000
#define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16))
#define BCI_BD_SET_STRIDE(bd, st) ((bd) |= ((st) & 0xFFFF))
/* IO functions */
static inline u8 savage_in8(u32 addr, struct savagefb_par *par)
{
return readb(par->mmio.vbase + addr);
}
static inline u16 savage_in16(u32 addr, struct savagefb_par *par)
{
return readw(par->mmio.vbase + addr);
}
static inline u32 savage_in32(u32 addr, struct savagefb_par *par)
{
return readl(par->mmio.vbase + addr);
}
static inline void savage_out8(u32 addr, u8 val, struct savagefb_par *par)
{
writeb(val, par->mmio.vbase + addr);
}
static inline void savage_out16(u32 addr, u16 val, struct savagefb_par *par)
{
writew(val, par->mmio.vbase + addr);
}
static inline void savage_out32(u32 addr, u32 val, struct savagefb_par *par)
{
writel(val, par->mmio.vbase + addr);
}
static inline u8 vga_in8(int addr, struct savagefb_par *par)
{
return savage_in8(0x8000 + addr, par);
}
static inline u16 vga_in16(int addr, struct savagefb_par *par)
{
return savage_in16(0x8000 + addr, par);
}
static inline u8 vga_in32(int addr, struct savagefb_par *par)
{
return savage_in32(0x8000 + addr, par);
}
static inline void vga_out8(int addr, u8 val, struct savagefb_par *par)
{
savage_out8(0x8000 + addr, val, par);
}
static inline void vga_out16(int addr, u16 val, struct savagefb_par *par)
{
savage_out16(0x8000 + addr, val, par);
}
static inline void vga_out32(int addr, u32 val, struct savagefb_par *par)
{
savage_out32(0x8000 + addr, val, par);
}
static inline u8 VGArCR (u8 index, struct savagefb_par *par)
{
vga_out8(0x3d4, index, par);
return vga_in8(0x3d5, par);
}
static inline u8 VGArGR (u8 index, struct savagefb_par *par)
{
vga_out8(0x3ce, index, par);
return vga_in8(0x3cf, par);
}
static inline u8 VGArSEQ (u8 index, struct savagefb_par *par)
{
vga_out8(0x3c4, index, par);
return vga_in8(0x3c5, par);
}
static inline void VGAwCR(u8 index, u8 val, struct savagefb_par *par)
{
vga_out8(0x3d4, index, par);
vga_out8(0x3d5, val, par);
}
static inline void VGAwGR(u8 index, u8 val, struct savagefb_par *par)
{
vga_out8(0x3ce, index, par);
vga_out8(0x3cf, val, par);
}
static inline void VGAwSEQ(u8 index, u8 val, struct savagefb_par *par)
{
vga_out8(0x3c4, index, par);
vga_out8 (0x3c5, val, par);
}
static inline void VGAenablePalette(struct savagefb_par *par)
{
vga_in8(0x3da, par);
vga_out8(0x3c0, 0x00, par);
par->paletteEnabled = 1;
}
static inline void VGAdisablePalette(struct savagefb_par *par)
{
vga_in8(0x3da, par);
vga_out8(0x3c0, 0x20, par);
par->paletteEnabled = 0;
}
static inline void VGAwATTR(u8 index, u8 value, struct savagefb_par *par)
{
if (par->paletteEnabled)
index &= ~0x20;
else
index |= 0x20;
vga_in8(0x3da, par);
vga_out8(0x3c0, index, par);
vga_out8 (0x3c0, value, par);
}
static inline void VGAwMISC(u8 value, struct savagefb_par *par)
{
vga_out8(0x3c2, value, par);
}
#ifndef CONFIG_FB_SAVAGE_ACCEL
#define savagefb_set_clip(x)
#endif
static inline void VerticalRetraceWait(struct savagefb_par *par)
{
vga_out8(0x3d4, 0x17, par);
if (vga_in8(0x3d5, par) & 0x80) {
while ((vga_in8(0x3da, par) & 0x08) == 0x08);
while ((vga_in8(0x3da, par) & 0x08) == 0x00);
}
}
extern int savagefb_probe_i2c_connector(struct fb_info *info,
u8 **out_edid);
extern void savagefb_create_i2c_busses(struct fb_info *info);
extern void savagefb_delete_i2c_busses(struct fb_info *info);
extern int savagefb_sync(struct fb_info *info);
extern void savagefb_copyarea(struct fb_info *info,
const struct fb_copyarea *region);
extern void savagefb_fillrect(struct fb_info *info,
const struct fb_fillrect *rect);
extern void savagefb_imageblit(struct fb_info *info,
const struct fb_image *image);
#endif /* __SAVAGEFB_H__ */
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