This is a framebuffer driver for ATI video card, can work for PCI9200,

X300, X700, X800 ATI video cards.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Jason Jin <Jason.jin@freescale.com>

1 files changed, 486 insertions, 0 deletions

diff --git a/drivers/ati_radeon_fb.c b/drivers/ati_radeon_fb.c
new file mode 100644
index 0000000..e15140a
--- /dev/null
+++ b/drivers/ati_radeon_fb.c
@@ -0,0 +1,486 @@
+/*
+ * ATI Radeon Video card Framebuffer driver.
+ *
+ * Copyright 2007 Freescale Semiconductor, Inc.
+ * Zhang Wei <wei.zhang@freescale.com>
+ * Jason Jin <jason.jin@freescale.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Some codes of this file is partly ported from Linux kernel
+ * ATI video framebuffer driver.
+ *
+ * Now the driver is tested on below ATI chips:
+ *   9200
+ *   X300
+ *   X700
+ *
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_ATI_RADEON_FB
+
+#include <command.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <malloc.h>
+#include <video_fb.h>
+
+#include <radeon.h>
+#include "ati_ids.h"
+#include "ati_radeon_fb.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DPRINT(x...) printf(x)
+#else
+#define DPRINT(x...) do{}while(0)
+#endif
+
+#ifndef min_t
+#define min_t(type,x,y) \
+	({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
+#endif
+
+#define MAX_MAPPED_VRAM	(2048*2048*4)
+#define MIN_MAPPED_VRAM	(1024*768*1)
+
+/*#define PCI_VENDOR_ID_ATI*/
+#define PCI_CHIP_RV280_5960		0x5960
+#define PCI_CHIP_RV280_5961		0x5961
+#define PCI_CHIP_RV280_5962		0x5962
+#define PCI_CHIP_RV280_5964		0x5964
+#define PCI_CHIP_RV370_5B60		0x5B60
+#define PCI_CHIP_RV380_5657		0x5657
+#define PCI_CHIP_R420_554d		0x554d
+
+static struct pci_device_id ati_radeon_pci_ids[] = {
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_RV280_5960},
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_RV280_5961},
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_RV280_5962},
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_RV280_5964},
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_RV370_5B60},
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_RV380_5657},
+	{PCI_VENDOR_ID_ATI, PCI_CHIP_R420_554d},
+	{0, 0}
+};
+
+static u16 ati_radeon_id_family_table[][2] = {
+	{PCI_CHIP_RV280_5960, CHIP_FAMILY_RV280},
+	{PCI_CHIP_RV280_5961, CHIP_FAMILY_RV280},
+	{PCI_CHIP_RV280_5962, CHIP_FAMILY_RV280},
+	{PCI_CHIP_RV280_5964, CHIP_FAMILY_RV280},
+	{PCI_CHIP_RV370_5B60, CHIP_FAMILY_RV380},
+	{PCI_CHIP_RV380_5657, CHIP_FAMILY_RV380},
+	{PCI_CHIP_R420_554d,  CHIP_FAMILY_R420},
+	{0, 0}
+};
+
+u16 get_radeon_id_family(u16 device)
+{
+	int i;
+	for (i=0; ati_radeon_id_family_table[0][i]; i+=2)
+		if (ati_radeon_id_family_table[0][i] == device)
+			return ati_radeon_id_family_table[0][i + 1];
+	return 0;
+}
+
+struct radeonfb_info *rinfo;
+
+static void radeon_identify_vram(struct radeonfb_info *rinfo)
+{
+	u32 tmp;
+
+	/* framebuffer size */
+	if ((rinfo->family == CHIP_FAMILY_RS100) ||
+		(rinfo->family == CHIP_FAMILY_RS200) ||
+		(rinfo->family == CHIP_FAMILY_RS300)) {
+		u32 tom = INREG(NB_TOM);
+		tmp = ((((tom >> 16) - (tom & 0xffff) + 1) << 6) * 1024);
+
+		radeon_fifo_wait(6);
+		OUTREG(MC_FB_LOCATION, tom);
+		OUTREG(DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
+		OUTREG(CRTC2_DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
+		OUTREG(OV0_BASE_ADDR, (tom & 0xffff) << 16);
+
+		/* This is supposed to fix the crtc2 noise problem. */
+		OUTREG(GRPH2_BUFFER_CNTL, INREG(GRPH2_BUFFER_CNTL) & ~0x7f0000);
+
+		if ((rinfo->family == CHIP_FAMILY_RS100) ||
+			(rinfo->family == CHIP_FAMILY_RS200)) {
+		/* This is to workaround the asic bug for RMX, some versions
+		   of BIOS dosen't have this register initialized correctly.
+		*/
+			OUTREGP(CRTC_MORE_CNTL, CRTC_H_CUTOFF_ACTIVE_EN,
+				~CRTC_H_CUTOFF_ACTIVE_EN);
+		}
+	} else {
+		tmp = INREG(CONFIG_MEMSIZE);
+        }
+
+	/* mem size is bits [28:0], mask off the rest */
+	rinfo->video_ram = tmp & CONFIG_MEMSIZE_MASK;
+
+	/*
+	 * Hack to get around some busted production M6's
+	 * reporting no ram
+	 */
+	if (rinfo->video_ram == 0) {
+		switch (rinfo->pdev.device) {
+		case PCI_CHIP_RADEON_LY:
+		case PCI_CHIP_RADEON_LZ:
+			rinfo->video_ram = 8192 * 1024;
+			break;
+		default:
+			break;
+		}
+	}
+
+	/*
+	 * Now try to identify VRAM type
+	 */
+	if ((rinfo->family >= CHIP_FAMILY_R300) ||
+	    (INREG(MEM_SDRAM_MODE_REG) & (1<<30)))
+		rinfo->vram_ddr = 1;
+	else
+		rinfo->vram_ddr = 0;
+
+	tmp = INREG(MEM_CNTL);
+	if (IS_R300_VARIANT(rinfo)) {
+		tmp &=  R300_MEM_NUM_CHANNELS_MASK;
+		switch (tmp) {
+		case 0:  rinfo->vram_width = 64; break;
+		case 1:  rinfo->vram_width = 128; break;
+		case 2:  rinfo->vram_width = 256; break;
+		default: rinfo->vram_width = 128; break;
+		}
+	} else if ((rinfo->family == CHIP_FAMILY_RV100) ||
+		   (rinfo->family == CHIP_FAMILY_RS100) ||
+		   (rinfo->family == CHIP_FAMILY_RS200)){
+		if (tmp & RV100_MEM_HALF_MODE)
+			rinfo->vram_width = 32;
+		else
+			rinfo->vram_width = 64;
+	} else {
+		if (tmp & MEM_NUM_CHANNELS_MASK)
+			rinfo->vram_width = 128;
+		else
+			rinfo->vram_width = 64;
+	}
+
+	/* This may not be correct, as some cards can have half of channel disabled
+	 * ToDo: identify these cases
+	 */
+
+	DPRINT("radeonfb: Found %ldk of %s %d bits wide videoram\n",
+	       rinfo->video_ram / 1024,
+	       rinfo->vram_ddr ? "DDR" : "SDRAM",
+	       rinfo->vram_width);
+
+}
+
+static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_regs *mode)
+{
+	int i;
+
+	radeon_fifo_wait(20);
+
+#if 0
+	/* Workaround from XFree */
+	if (rinfo->is_mobility) {
+	        /* A temporal workaround for the occational blanking on certain laptop
+		 * panels. This appears to related to the PLL divider registers
+		 * (fail to lock?). It occurs even when all dividers are the same
+		 * with their old settings. In this case we really don't need to
+		 * fiddle with PLL registers. By doing this we can avoid the blanking
+		 * problem with some panels.
+	         */
+		if ((mode->ppll_ref_div == (INPLL(PPLL_REF_DIV) & PPLL_REF_DIV_MASK)) &&
+		    (mode->ppll_div_3 == (INPLL(PPLL_DIV_3) &
+					  (PPLL_POST3_DIV_MASK | PPLL_FB3_DIV_MASK)))) {
+			/* We still have to force a switch to selected PPLL div thanks to
+			 * an XFree86 driver bug which will switch it away in some cases
+			 * even when using UseFDev */
+			OUTREGP(CLOCK_CNTL_INDEX,
+				mode->clk_cntl_index & PPLL_DIV_SEL_MASK,
+				~PPLL_DIV_SEL_MASK);
+			radeon_pll_errata_after_index(rinfo);
+			radeon_pll_errata_after_data(rinfo);
+			return;
+		}
+	}
+#endif
+	if(rinfo->pdev.device == PCI_CHIP_RV370_5B60) return;
+
+	/* Swich VCKL clock input to CPUCLK so it stays fed while PPLL updates*/
+	OUTPLLP(VCLK_ECP_CNTL, VCLK_SRC_SEL_CPUCLK, ~VCLK_SRC_SEL_MASK);
+
+	/* Reset PPLL & enable atomic update */
+	OUTPLLP(PPLL_CNTL,
+		PPLL_RESET | PPLL_ATOMIC_UPDATE_EN | PPLL_VGA_ATOMIC_UPDATE_EN,
+		~(PPLL_RESET | PPLL_ATOMIC_UPDATE_EN | PPLL_VGA_ATOMIC_UPDATE_EN));
+
+	/* Switch to selected PPLL divider */
+	OUTREGP(CLOCK_CNTL_INDEX,
+		mode->clk_cntl_index & PPLL_DIV_SEL_MASK,
+		~PPLL_DIV_SEL_MASK);
+
+	/* Set PPLL ref. div */
+	if (rinfo->family == CHIP_FAMILY_R300 ||
+	    rinfo->family == CHIP_FAMILY_RS300 ||
+	    rinfo->family == CHIP_FAMILY_R350 ||
+	    rinfo->family == CHIP_FAMILY_RV350) {
+		if (mode->ppll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
+			/* When restoring console mode, use saved PPLL_REF_DIV
+			 * setting.
+			 */
+			OUTPLLP(PPLL_REF_DIV, mode->ppll_ref_div, 0);
+		} else {
+			/* R300 uses ref_div_acc field as real ref divider */
+			OUTPLLP(PPLL_REF_DIV,
+				(mode->ppll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),
+				~R300_PPLL_REF_DIV_ACC_MASK);
+		}
+	} else
+		OUTPLLP(PPLL_REF_DIV, mode->ppll_ref_div, ~PPLL_REF_DIV_MASK);
+
+	/* Set PPLL divider 3 & post divider*/
+	OUTPLLP(PPLL_DIV_3, mode->ppll_div_3, ~PPLL_FB3_DIV_MASK);
+	OUTPLLP(PPLL_DIV_3, mode->ppll_div_3, ~PPLL_POST3_DIV_MASK);
+
+	/* Write update */
+	while (INPLL(PPLL_REF_DIV) & PPLL_ATOMIC_UPDATE_R)
+		;
+	OUTPLLP(PPLL_REF_DIV, PPLL_ATOMIC_UPDATE_W, ~PPLL_ATOMIC_UPDATE_W);
+
+	/* Wait read update complete */
+	/* FIXME: Certain revisions of R300 can't recover here.  Not sure of
+	   the cause yet, but this workaround will mask the problem for now.
+	   Other chips usually will pass at the very first test, so the
+	   workaround shouldn't have any effect on them. */
+	for (i = 0; (i < 10000 && INPLL(PPLL_REF_DIV) & PPLL_ATOMIC_UPDATE_R); i++)
+		;
+
+	OUTPLL(HTOTAL_CNTL, 0);
+
+	/* Clear reset & atomic update */
+	OUTPLLP(PPLL_CNTL, 0,
+		~(PPLL_RESET | PPLL_SLEEP | PPLL_ATOMIC_UPDATE_EN | PPLL_VGA_ATOMIC_UPDATE_EN));
+
+	/* We may want some locking ... oh well */
+	udelay(5000);
+
+	/* Switch back VCLK source to PPLL */
+	OUTPLLP(VCLK_ECP_CNTL, VCLK_SRC_SEL_PPLLCLK, ~VCLK_SRC_SEL_MASK);
+}
+
+typedef struct {
+	u16 reg;
+	u32 val;
+} reg_val;
+
+
+/* these common regs are cleared before mode setting so they do not
+ * interfere with anything
+ */
+static reg_val common_regs[] = {
+	{ OVR_CLR, 0 },
+	{ OVR_WID_LEFT_RIGHT, 0 },
+	{ OVR_WID_TOP_BOTTOM, 0 },
+	{ OV0_SCALE_CNTL, 0 },
+	{ SUBPIC_CNTL, 0 },
+	{ VIPH_CONTROL, 0 },
+	{ I2C_CNTL_1, 0 },
+	{ GEN_INT_CNTL, 0 },
+	{ CAP0_TRIG_CNTL, 0 },
+	{ CAP1_TRIG_CNTL, 0 },
+};
+
+
+void radeon_setmode(void)
+{
+	int i;
+	struct radeon_regs *mode = malloc(sizeof(struct radeon_regs));
+
+	mode->crtc_gen_cntl = 0x03000200;
+	mode->crtc_ext_cntl = 0x00008048;
+	mode->dac_cntl = 0xff002100;
+	mode->crtc_h_total_disp = 0x4f0063;
+	mode->crtc_h_sync_strt_wid = 0x8c02a2;
+	mode->crtc_v_total_disp = 0x01df020c;
+	mode->crtc_v_sync_strt_wid = 0x8201ea;
+	mode->crtc_pitch = 0x00500050;
+
+	OUTREG(CRTC_GEN_CNTL, mode->crtc_gen_cntl);
+	OUTREGP(CRTC_EXT_CNTL, mode->crtc_ext_cntl,
+		~(CRTC_HSYNC_DIS | CRTC_VSYNC_DIS | CRTC_DISPLAY_DIS));
+	OUTREGP(DAC_CNTL, mode->dac_cntl, DAC_RANGE_CNTL | DAC_BLANKING);
+	OUTREG(CRTC_H_TOTAL_DISP, mode->crtc_h_total_disp);
+	OUTREG(CRTC_H_SYNC_STRT_WID, mode->crtc_h_sync_strt_wid);
+	OUTREG(CRTC_V_TOTAL_DISP, mode->crtc_v_total_disp);
+	OUTREG(CRTC_V_SYNC_STRT_WID, mode->crtc_v_sync_strt_wid);
+	OUTREG(CRTC_OFFSET, 0);
+	OUTREG(CRTC_OFFSET_CNTL, 0);
+	OUTREG(CRTC_PITCH, mode->crtc_pitch);
+
+	mode->clk_cntl_index = 0x300;
+	mode->ppll_ref_div = 0xc;
+	mode->ppll_div_3 = 0x00030059;
+
+	radeon_write_pll_regs(rinfo, mode);
+}
+
+int radeon_probe(struct radeonfb_info *rinfo)
+{
+	pci_dev_t pdev;
+	u16 did;
+
+	pdev = pci_find_devices(ati_radeon_pci_ids, 0);
+
+	if (pdev != -1) {
+		pci_read_config_word(pdev, PCI_DEVICE_ID, &did);
+		printf("ATI Radeon video card (%04x, %04x) found @(%d:%d:%d)\n",
+				PCI_VENDOR_ID_ATI, did, (pdev >> 16) & 0xff,
+				(pdev >> 11) & 0x1f, (pdev >> 8) & 0x7);
+
+		strcpy(rinfo->name, "ATI Radeon");
+		rinfo->pdev.vendor = PCI_VENDOR_ID_ATI;
+		rinfo->pdev.device = did;
+		rinfo->family = get_radeon_id_family(rinfo->pdev.device);
+		pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0,
+				&rinfo->fb_base_phys);
+		pci_read_config_dword(pdev, PCI_BASE_ADDRESS_2,
+				&rinfo->mmio_base_phys);
+		rinfo->fb_base_phys &= 0xfffff000;
+		rinfo->mmio_base_phys &= ~0x04;
+
+		rinfo->mmio_base = (void *)rinfo->mmio_base_phys;
+		DPRINT("rinfo->mmio_base = 0x%x\n",rinfo->mmio_base);
+		rinfo->fb_local_base = INREG(MC_FB_LOCATION) << 16;
+		DPRINT("rinfo->fb_local_base = 0x%x\n",rinfo->fb_local_base);
+		/* PostBIOS with x86 emulater */
+		BootVideoCardBIOS(pdev, NULL, 0);
+
+		/*
+		 * Check for errata
+		 * (These will be added in the future for the chipfamily
+		 * R300, RV200, RS200, RV100, RS100.)
+		 */
+
+		/* Get VRAM size and type */
+		radeon_identify_vram(rinfo);
+
+		rinfo->mapped_vram = min_t(unsigned long, MAX_MAPPED_VRAM,
+				rinfo->video_ram);
+		rinfo->fb_base = (void *)rinfo->fb_base_phys;
+
+		DPRINT("Radeon: framebuffer base phy address 0x%08x," \
+		      "MMIO base phy address 0x%08x," \
+		      "framebuffer local base 0x%08x.\n ",
+		      rinfo->fb_base_phys, rinfo->mmio_base_phys,
+		      rinfo->fb_local_base);
+
+		return 0;
+	}
+	return -1;
+}
+
+/*
+ * The Graphic Device
+ */
+GraphicDevice ctfb;
+
+#define CURSOR_SIZE	0x1000	/* in KByte for HW Cursor */
+#define PATTERN_ADR	(pGD->dprBase + CURSOR_SIZE)	/* pattern Memory after Cursor Memory */
+#define PATTERN_SIZE	8*8*4	/* 4 Bytes per Pixel 8 x 8 Pixel */
+#define ACCELMEMORY	(CURSOR_SIZE + PATTERN_SIZE)	/* reserved Memory for BITBlt and hw cursor */
+
+void *video_hw_init(void)
+{
+	GraphicDevice *pGD = (GraphicDevice *) & ctfb;
+	int i;
+	u32 *vm;
+
+	rinfo = malloc(sizeof(struct radeonfb_info));
+
+	if(radeon_probe(rinfo)) {
+		printf("No radeon video card found!\n");
+		return NULL;
+	}
+
+	/* fill in Graphic device struct */
+	sprintf (pGD->modeIdent, "%dx%dx%d %ldkHz %ldHz", 640,
+		 480, 16, (1000 / 1000),
+		 (2000 / 1000));
+	printf ("%s\n", pGD->modeIdent);
+
+	pGD->winSizeX = 640;
+	pGD->winSizeY = 480;
+	pGD->plnSizeX = 640;
+	pGD->plnSizeY = 480;
+
+	pGD->gdfBytesPP = 1;
+	pGD->gdfIndex = GDF__8BIT_INDEX;
+
+	pGD->isaBase = CFG_ISA_IO_BASE_ADDRESS;
+	pGD->pciBase = rinfo->fb_base_phys;
+	pGD->frameAdrs = rinfo->fb_base_phys;
+	pGD->memSize = 64 * 1024 * 1024;
+
+	/* Cursor Start Address */
+	pGD->dprBase =
+	    (pGD->winSizeX * pGD->winSizeY * pGD->gdfBytesPP) + rinfo->fb_base_phys;
+	if ((pGD->dprBase & 0x0fff) != 0) {
+		/* allign it */
+		pGD->dprBase &= 0xfffff000;
+		pGD->dprBase += 0x00001000;
+	}
+	DPRINT ("Cursor Start %x Pattern Start %x\n", pGD->dprBase,
+		PATTERN_ADR);
+	pGD->vprBase = rinfo->fb_base_phys;	/* Dummy */
+	pGD->cprBase = rinfo->fb_base_phys;	/* Dummy */
+	/* set up Hardware */
+
+	/* Clear video memory */
+	i = pGD->memSize / 4;
+	vm = (unsigned int *) pGD->pciBase;
+	while (i--)
+		*vm++ = 0;
+	/*SetDrawingEngine (bits_per_pixel);*/
+
+	radeon_setmode();
+
+	return ((void *) pGD);
+}
+
+void video_set_lut (unsigned int index,	/* color number */
+	       unsigned char r,	/* red */
+	       unsigned char g,	/* green */
+	       unsigned char b	/* blue */
+	       )
+{
+	OUTREG(PALETTE_INDEX, index);
+	OUTREG(PALETTE_DATA, (r << 16) | (g << 8) | b);
+}
+#endif