patch-2.1.115 linux/drivers/sbus/char/mach64.c

• Lines: 332
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.114/linux/drivers/sbus/char/mach64.c
• Orig date: Fri May 8 23:14:48 1998

diff -u --recursive --new-file v2.1.114/linux/drivers/sbus/char/mach64.c linux/drivers/sbus/char/mach64.c
@@ -1,331 +0,0 @@
-/* $Id: mach64.c,v 1.18 1998/05/03 21:56:07 davem Exp $
- * mach64.c: Ultra/PCI Mach64 console driver.
- *
- * Just about all of this is from the PPC/mac driver, see that for
- * author info.  I'm only responsible for grafting it into working
- * on PCI Ultra's.  The two drivers should be merged.
- *
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/config.h> /* for CONFIG_CHIP_ID */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/string.h>
-#include <linux/tty.h>
-#include <linux/console.h>
-#include <linux/selection.h>
-#include <linux/proc_fs.h>
-
-#include <asm/oplib.h>
-#include <asm/pbm.h>
-#include <asm/fbio.h>
-#include <asm/sbus.h>
-#include <asm/pgtable.h>
-
-#include "pcicons.h"
-#include "mach64.h"
-#include "fb.h"
-
-static unsigned int mach64_pci_membase, mach64_pci_membase2;
-static unsigned int mach64_pci_iobase;
-
-#define MACH64_LE_FBOFF	0x000000
-#define MACH64_REGOFF	0x7ffc00
-#define MACH64_BE_FBOFF	0x800000
-
-static inline void mach64_waitq(int entries)
-{
-	unsigned short base = (0x8000 >> entries);
-
-	while((pcivga_readl(MACH64_REGOFF + FIFO_STAT) & 0xffff) > base)
-		barrier();
-}
-
-static inline void mach64_idle(void)
-{
-	mach64_waitq(16);
-	while(pcivga_readl(MACH64_REGOFF + GUI_STAT) & 1)
-		barrier();
-}
-
-#if 0	/* not used yet */
-static void mach64_st_514(int offset, char val)
-{
-	mach64_waitq(5);
-	pcivga_writeb(1,			MACH64_REGOFF + DAC_CNTL);
-	pcivga_writeb((offset & 0xff),		MACH64_REGOFF + DAC_W_INDEX);
-	pcivga_writeb(((offset>>8)&0xff),	MACH64_REGOFF + DAC_DATA);
-	pcivga_writeb(val,			MACH64_REGOFF + DAC_MASK);
-	pcivga_writeb(0,			MACH64_REGOFF + DAC_CNTL);
-}
-
-static void mach64_st_pll(int offset, char val)
-{
-	mach64_waitq(3);
-	pcivga_writeb(((offset<<2)|PLL_WR_EN),	MACH64_REGOFF + CLOCK_CNTL + 1);
-	pcivga_writeb(val,			MACH64_REGOFF + CLOCK_CNTL + 2);
-	pcivga_writeb(((offset<<2)&~PLL_WR_EN),	MACH64_REGOFF + CLOCK_CNTL + 1);
-}
-#endif
-
-static int
-mach64_mmap(struct inode *inode, struct file *file, struct vm_area_struct *vma,
-	    long base, fbinfo_t *fb)
-{
-	unsigned long addr, size;
-
-	size = vma->vm_end - vma->vm_start;
-	if (vma->vm_offset & ~PAGE_MASK)
-		return -ENXIO;
-
-	if (vma->vm_offset == (mach64_pci_iobase & PAGE_MASK)) {
-		addr = __pa((pcivga_iobase & PAGE_MASK));
-		size = PAGE_SIZE;
-	} else if(mach64_pci_membase2 &&
-		  (vma->vm_offset == (mach64_pci_membase2 & PAGE_MASK))) {
-		addr = __pa((pcivga_membase2 & PAGE_MASK));
-	} else if (vma->vm_offset >= (mach64_pci_membase + 0x800000)) {
-		addr = __pa(pcivga_membase) - mach64_pci_membase
-			+ vma->vm_offset;
-		pgprot_val(vma->vm_page_prot) |= _PAGE_IE;
-	} else if (vma->vm_offset >= mach64_pci_membase) {
-		addr = __pa(pcivga_membase) - mach64_pci_membase
-			+ vma->vm_offset;
-	} else {
-		return -EINVAL;
-	}
-
-	pgprot_val(vma->vm_page_prot) &= ~(_PAGE_CACHE);
-	pgprot_val(vma->vm_page_prot) |= _PAGE_E;
-	vma->vm_flags |= (VM_SHM | VM_LOCKED);
-
-	if (remap_page_range(vma->vm_start, addr, size, vma->vm_page_prot))
-		return -EAGAIN;
-
-	vma->vm_file = file;
-	file->f_count++;
-	return 0;
-}
-
-static void
-mach64_loadcmap(fbinfo_t *fb, int index, int count)
-{
-	unsigned char tmp;
-	int i;
-
-	mach64_waitq(2);
-	tmp = pcivga_readb(MACH64_REGOFF + DAC_CNTL);
-	pcivga_writeb(tmp & 0xfc, MACH64_REGOFF + DAC_CNTL);
-	pcivga_writeb(0xff, MACH64_REGOFF + DAC_MASK);
-	for(i = index; count--; i++) {
-		mach64_waitq(4);
-		pcivga_writeb(i, MACH64_REGOFF + DAC_W_INDEX);
-		pcivga_writeb(fb->color_map CM(i, 0), MACH64_REGOFF + DAC_DATA);
-		pcivga_writeb(fb->color_map CM(i, 1), MACH64_REGOFF + DAC_DATA);
-		pcivga_writeb(fb->color_map CM(i, 2), MACH64_REGOFF + DAC_DATA);
-	}
-	mach64_idle();
-}
-
-static void
-mach64_blank(fbinfo_t *fb)
-{
-	unsigned char gen_cntl;
-
-	gen_cntl = pcivga_readb(MACH64_REGOFF + CRTC_GEN_CNTL);
-	gen_cntl |= 0x40;
-	pcivga_writeb(gen_cntl, MACH64_REGOFF + CRTC_GEN_CNTL);
-}
-
-static void
-mach64_unblank(fbinfo_t *fb)
-{
-	unsigned char gen_cntl;
-
-	gen_cntl = pcivga_readb(MACH64_REGOFF + CRTC_GEN_CNTL);
-	gen_cntl &= ~(0x4c);
-	pcivga_writeb(gen_cntl, MACH64_REGOFF + CRTC_GEN_CNTL);
-}
-
-static struct mach64_info mach64;
-
-void mach64_test(fbinfo_t *fb)
-{
-	unsigned int x;
-	int i;
-
-	for (i = 0; i < mach64.total_vram; i += 4)
-		writel(i, pcivga_membase + i);
-
-	for (i = 0; i < mach64.total_vram; i += 4)
-		if ((x = readl(pcivga_membase + i)) != i) {
-			printk("vga mem read error @ %08x: exp %x, rd %x\n",
-			       i, i, x);
-			i = (i & ~(0xffff)) + 0x10000;
-		}
-}
-
-int mach64_init(fbinfo_t *fb)
-{
-	struct pci_dev *pdev;
-	struct pcidev_cookie *cookie;
-	struct linux_pbm_info *pbm;
-	unsigned long addr;
-	unsigned int tmp;
-
-	memset(&mach64, 0, sizeof(mach64));
-
-	pdev = pci_find_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_264VT, 0);
-	if(!pdev)
-		pdev = pci_find_device(PCI_VENDOR_ID_ATI,
-				       PCI_DEVICE_ID_ATI_215GT, 0);
-	if(!pdev)
-		return -1;
-
-	addr = pdev->base_address[0];
-	pcivga_iobase = pcivga_membase = 0;
-	if((addr & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO)
-		pcivga_iobase = addr & PCI_BASE_ADDRESS_IO_MASK;
-	else
-		pcivga_membase = addr & PCI_BASE_ADDRESS_MEM_MASK;
-
-	addr = pdev->base_address[1];
-	if((addr & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO)
-		pcivga_iobase = addr & PCI_BASE_ADDRESS_IO_MASK;
-	else
-		pcivga_membase = addr & PCI_BASE_ADDRESS_MEM_MASK;
-
-	pcivga_membase2 = (pdev->base_address[2] &
-			   PCI_BASE_ADDRESS_MEM_MASK);
-
-	if(!pcivga_iobase || !pcivga_membase) {
-		prom_printf("mach64_init: I/O or MEM baseaddr is missing\n");
-		prom_printf("mach64_init: ba[0]=%016lx ba[1]=%016lx\n",
-			    pdev->base_address[0], pdev->base_address[1]);
-		prom_halt();
-	}
-
-	pcibios_read_config_dword(pdev->bus->number, pdev->devfn,
-				  PCI_BASE_ADDRESS_0, &mach64_pci_membase);
-	mach64_pci_membase &= PCI_BASE_ADDRESS_MEM_MASK;
-
-	pcibios_read_config_dword(pdev->bus->number, pdev->devfn,
-				  PCI_BASE_ADDRESS_1, &mach64_pci_iobase);
-	mach64_pci_iobase &= PCI_BASE_ADDRESS_IO_MASK;
-
-	pcibios_read_config_dword(pdev->bus->number, pdev->devfn,
-				  PCI_BASE_ADDRESS_2, &mach64_pci_membase2);
-	mach64_pci_membase2 &= PCI_BASE_ADDRESS_MEM_MASK;
-
-	printk("mach64_init: IOBASE[%016lx] M1[%016lx] M2[%016lx]\n",
-		pcivga_iobase, pcivga_membase, pcivga_membase2);
-
-	cookie = pdev->sysdata;
-	pbm = cookie->pbm;
-
-	fb->prom_node = cookie->prom_node;
-	fb->proc_entry.node = pbm->prom_node;
-
-	fb->type.fb_type = FBTYPE_PCI_MACH64;
-	fb->type.fb_cmsize = 256;
-	fb->info.private = (void *)&mach64;
-	fb->base = pcivga_membase + MACH64_BE_FBOFF;
-
-	mach64.chip_type = pcivga_readl(MACH64_REGOFF + CONFIG_CHIP_ID)
-							& CFG_CHIP_TYPE;
-
-	if (mach64.chip_type == MACH64_VT_ID) {
-		/*
-		 * Fix the PROM's idea of MEM_CNTL settings...
-		 */
-		tmp = pcivga_readl(MACH64_REGOFF + MEM_CNTL);
-		switch (tmp & 0xf) {
-		case 3:
-			tmp = (tmp & ~(0xf)) | 2;
-			break;
-		case 7:
-			tmp = (tmp & ~(0xf)) | 3;
-			break;
-		case 9:
-			tmp = (tmp & ~(0xf)) | 4;
-			break;
-		case 11:
-			tmp = (tmp & ~(0xf)) | 5;
-			break;
-		default:
-			break;
-		}
-		tmp &= ~(0x00f00000);
-		pcivga_writel(tmp, MACH64_REGOFF + MEM_CNTL);
-	}
-
-	tmp = pcivga_readl(MACH64_REGOFF + MEM_CNTL);
-	if (mach64.chip_type != MACH64_GT_ID) {
-		switch(tmp & MEM_SIZE_ALIAS) {
-		case MEM_SIZE_512K:
-			mach64.total_vram = 0x80000;
-			break;
-		case MEM_SIZE_1M:
-			mach64.total_vram = 0x100000;
-			break;
-		case MEM_SIZE_2M:
-			mach64.total_vram = 0x200000;
-			break;
-		case MEM_SIZE_4M:
-			mach64.total_vram = 0x400000;
-			break;
-		case MEM_SIZE_6M:
-			mach64.total_vram = 0x600000;
-			break;
-		case MEM_SIZE_8M:
-			mach64.total_vram = 0x800000;
-			break;
-		default:
-			mach64.total_vram = 0x80000;
-			break;
-		}
-	} else {
-		switch(tmp & MEM_SIZE_ALIAS_GTB) {
-		case MEM_SIZE_512K_GTB:
-			mach64.total_vram = 0x80000;
-			break;
-		case MEM_SIZE_1M_GTB:
-			mach64.total_vram = 0x100000;
-			break;
-		case MEM_SIZE_2M_GTB:
-			mach64.total_vram = 0x200000;
-			break;
-		case MEM_SIZE_4M_GTB:
-			mach64.total_vram = 0x400000;
-			break;
-		case MEM_SIZE_6M_GTB:
-			mach64.total_vram = 0x600000;
-			break;
-		case MEM_SIZE_8M_GTB:
-			mach64.total_vram = 0x800000;
-			break;
-		default:
-			mach64.total_vram = 0x80000;
-			break;
-		}
-	}
-
-	printk("mach64_init: chip_type[%04x], total_vram[%08x]\n",
-		mach64.chip_type, mach64.total_vram);
-
-#if 0
-	mach64_test(fb);
-#endif
-
-	fb->mmap = mach64_mmap;
-	fb->loadcmap = mach64_loadcmap;
-	fb->ioctl = 0;
-	fb->reset = 0;
-	fb->blank = mach64_blank;
-	fb->unblank = mach64_unblank;
-	fb->setcursor = 0;
-
-	return 0;
-}