diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/sgi/char/graphics.c | 105 |
1 files changed, 74 insertions, 31 deletions
diff --git a/drivers/sgi/char/graphics.c b/drivers/sgi/char/graphics.c index be6317d5f..6526aaa02 100644 --- a/drivers/sgi/char/graphics.c +++ b/drivers/sgi/char/graphics.c @@ -1,9 +1,10 @@ -/* $Id: graphics.c,v 1.14 1998/09/19 19:17:50 ralf Exp $ +/* $Id: graphics.c,v 1.15 1999/02/06 03:57:38 adevries Exp $ * * gfx.c: support for SGI's /dev/graphics, /dev/opengl * * Author: Miguel de Icaza (miguel@nuclecu.unam.mx) - Ralf Baechle (ralf@gnu.org) + * Ralf Baechle (ralf@gnu.org) + * Ulf Carlsson (ulfc@bun.falkenberg.se) * * On IRIX, /dev/graphics is [10, 146] * /dev/opengl is [10, 147] @@ -40,6 +41,9 @@ #include <asm/rrm.h> #include <asm/page.h> #include <asm/pgtable.h> +#include <asm/newport.h> + +#define DEBUG /* The boards */ extern struct graphics_ops *newport_probe (int, const char **); @@ -58,6 +62,18 @@ void disable_gconsole(void) {}; int sgi_graphics_open (struct inode *inode, struct file *file) { + struct newport_regs *nregs = + (struct newport_regs *) KSEG1ADDR(cards[0].g_regs); + + newport_wait(); + nregs->set.wrmask = 0xffffffff; + nregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | + NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX | + NPORT_DMODE0_STOPY); + nregs->set.colori = 1; + nregs->set.xystarti = (0 << 16) | 0; + nregs->go.xyendi = (1280 << 16) | 1024; + return 0; } @@ -134,8 +150,9 @@ sgi_graphics_ioctl (struct inode *inode, struct file *file, unsigned int cmd, un * sgi_graphics_mmap */ disable_gconsole (); - r = do_mmap (file, (unsigned long)vaddr, cards [board].g_regs_size, - PROT_READ|PROT_WRITE, MAP_FIXED|MAP_PRIVATE, 0); + r = do_mmap (file, (unsigned long)vaddr, + cards[board].g_regs_size, PROT_READ|PROT_WRITE, + MAP_FIXED|MAP_PRIVATE, 0); if (r) return r; } @@ -180,7 +197,8 @@ sgi_graphics_close (struct inode *inode, struct file *file) /* Was this file handle from the board owner?, clear it */ if (current == cards [board].g_owner){ cards [board].g_owner = 0; - (*cards [board].g_reset_console)(); + if (cards [board].g_reset_console) + (*cards [board].g_reset_console)(); enable_gconsole (); } return 0; @@ -191,37 +209,42 @@ sgi_graphics_close (struct inode *inode, struct file *file) */ unsigned long -sgi_graphics_nopage (struct vm_area_struct *vma, unsigned long address, int write_access) +sgi_graphics_nopage (struct vm_area_struct *vma, unsigned long address, int + no_share) { - unsigned long page; + pgd_t *pgd; pmd_t *pmd; pte_t *pte; int board = GRAPHICS_CARD (vma->vm_dentry->d_inode->i_rdev); -#ifdef DEBUG_GRAPHICS - printk ("Got a page fault for board %d address=%lx guser=%lx\n", board, address, - cards [board].g_user); + unsigned long virt_add, phys_add; + +#ifdef DEBUG + printk ("Got a page fault for board %d address=%lx guser=%lx\n", board, + address, (unsigned long) cards[board].g_user); #endif - /* 1. figure out if another process has this mapped, - * and revoke the mapping in that case. - */ - if (cards [board].g_user && cards [board].g_user != current){ - /* FIXME: save graphics context here, dump it to rendering node? */ - remove_mapping (cards [board].g_user, vma->vm_start, vma->vm_end); + /* Figure out if another process has this mapped, and revoke the mapping + * in that case. */ + if (cards[board].g_user && cards[board].g_user != current) { + /* FIXME: save graphics context here, dump it to rendering + * node? */ + + remove_mapping(cards[board].g_user, vma->vm_start, vma->vm_end); } + cards [board].g_user = current; -#if DEBUG_GRAPHICS - printk ("Registers: 0x%lx\n", cards [board].g_regs); - printk ("vm_start: 0x%lx\n", vma->vm_start); - printk ("address: 0x%lx\n", address); - printk ("diff: 0x%lx\n", (address - vma->vm_start)); - - printk ("page/pfn: 0x%lx\n", page); - printk ("TLB entry: %lx\n", pte_val (mk_pte (page + PAGE_OFFSET, PAGE_USERIO))); -#endif - /* 2. Map this into the current process address space */ - page = ((cards [board].g_regs) + (address - vma->vm_start)); - return page + PAGE_OFFSET; + /* Map the physical address of the newport registers into the address + * space of this process */ + + virt_add = address & PAGE_MASK; + phys_add = cards[board].g_regs + virt_add - vma->vm_start; + remap_page_range(virt_add, phys_add, PAGE_SIZE, vma->vm_page_prot); + + pgd = pgd_offset(current->mm, address); + pmd = pmd_offset(pgd, address); + pte = pte_offset(pmd, address); + printk("page: %08lx\n", pte_page(*pte)); + return pte_page(*pte); } /* @@ -319,6 +342,8 @@ __initfunc(void gfx_init (const char **name)) shmiq_init (); usema_init (); + boards++; + #if 0 if ((g = newport_probe (boards, name)) != 0) { cards [boards] = *g; @@ -336,13 +361,31 @@ __initfunc(void gfx_init (const char **name)) #ifdef MODULE int init_module(void) { - printk("SGI Newport Graphics version %i.%i.%i\n",42,54,69); + static int initiated = 0; + printk("SGI Newport Graphics version %i.%i.%i\n",42,54,69); + + if (!initiated++) { + shmiq_init(); + usema_init(); + printk("Adding first board\n"); + boards++; + cards[0].g_regs = 0x1f0f0000; + cards[0].g_regs_size = sizeof (struct newport_regs); + } + + printk("Boards: %d\n", boards); + + misc_register (&dev_graphics); + misc_register (&dev_opengl); + + return 0; } void cleanup_module(void) { + printk("Shutting down SGI Newport Graphics\n"); - printk("Shutting down SGI Newport Graphics\n"); - + misc_deregister (&dev_graphics); + misc_deregister (&dev_opengl); } #endif |