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https://gitee.com/openharmony/kernel_linux
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[PARISC] Fix stifb with IOREMAP and a 64-bit kernel
Kill various warnings when built using ioremap.
Remove stifb_{read,write} functions, which are now obsolete (and stack abusers!)
Disable stifb mmap() functionality on a 64-bit kernel, it will crash the
machine.
Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Helge Deller
Kyle McMartin
parent
b8ce0aadcd
commit
857600c771
@ -373,7 +373,7 @@ sti_dump_globcfg(struct sti_glob_cfg *glob_cfg, unsigned int sti_mem_request)
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glob_cfg->save_addr));
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/* dump extended cfg */
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cfg = PTR_STI(glob_cfg->ext_ptr);
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cfg = PTR_STI((unsigned long)glob_cfg->ext_ptr);
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DPRINTK(( KERN_INFO
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"monitor %d\n"
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"in friendly mode: %d\n"
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@ -453,25 +453,11 @@ sti_init_glob_cfg(struct sti_struct *sti,
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sti->regions_phys[i] =
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REGION_OFFSET_TO_PHYS(sti->regions[i], newhpa);
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/* remap virtually */
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/* FIXME: add BTLB support if btlb==1 */
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len = sti->regions[i].region_desc.length * 4096;
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/* XXX: Enabling IOREMAP debugging causes a crash, so we must be passing
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* a virtual address to something expecting a physical address that doesn't
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* go through a readX macro */
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#if 0
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if (len)
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glob_cfg->region_ptrs[i] = (unsigned long) (
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sti->regions[i].region_desc.cache ?
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ioremap(sti->regions_phys[i], len) :
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ioremap_nocache(sti->regions_phys[i], len) );
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#else
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if (len)
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glob_cfg->region_ptrs[i] = sti->regions_phys[i];
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#endif
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DPRINTK(("region #%d: phys %08lx, virt %08x, len=%lukB, "
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DPRINTK(("region #%d: phys %08lx, region_ptr %08x, len=%lukB, "
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"btlb=%d, sysonly=%d, cache=%d, last=%d\n",
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i, sti->regions_phys[i], glob_cfg->region_ptrs[i],
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len/1024,
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@ -34,36 +34,20 @@
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* for them to fix it and steal their solution. prumpf
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*/
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#include <asm/io.h>
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#define STI_WAIT 1
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#include <asm/io.h> /* for USE_HPPA_IOREMAP */
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#if USE_HPPA_IOREMAP
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#define STI_PTR(p) (p)
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#define PTR_STI(p) (p)
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static inline int STI_CALL( unsigned long func,
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void *flags, void *inptr, void *outptr, void *glob_cfg )
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{
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int (*f)(void *,void *,void *,void *);
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f = (void*)func;
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return f(flags, inptr, outptr, glob_cfg);
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}
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#else /* !USE_HPPA_IOREMAP */
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#define STI_PTR(p) ( virt_to_phys(p) )
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#define PTR_STI(p) ( phys_to_virt((long)p) )
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#define STI_CALL(func, flags, inptr, outptr, glob_cfg) \
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({ \
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pdc_sti_call( func, (unsigned long)STI_PTR(flags), \
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(unsigned long)STI_PTR(inptr), \
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(unsigned long)STI_PTR(outptr), \
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(unsigned long)STI_PTR(glob_cfg)); \
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#define PTR_STI(p) ( phys_to_virt((unsigned long)p) )
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#define STI_CALL(func, flags, inptr, outptr, glob_cfg) \
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({ \
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pdc_sti_call( func, STI_PTR(flags), \
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STI_PTR(inptr), \
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STI_PTR(outptr), \
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STI_PTR(glob_cfg)); \
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})
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#endif /* USE_HPPA_IOREMAP */
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#define sti_onscreen_x(sti) (sti->glob_cfg->onscreen_x)
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#define sti_onscreen_y(sti) (sti->glob_cfg->onscreen_y)
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@ -352,8 +336,9 @@ struct sti_struct {
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struct sti_conf_outptr outptr; /* configuration */
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struct sti_conf_outptr_ext outptr_ext;
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/* PCI data structures (pg. 17ff from sti.pdf) */
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struct pci_dev *pd;
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/* PCI data structures (pg. 17ff from sti.pdf) */
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u8 rm_entry[16]; /* pci region mapper array == pci config space offset */
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/* pointer to the fb_info where this STI device is used */
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@ -3,7 +3,7 @@
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* Low level Frame buffer driver for HP workstations with
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* STI (standard text interface) video firmware.
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*
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* Copyright (C) 2001-2005 Helge Deller <deller@gmx.de>
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* Copyright (C) 2001-2006 Helge Deller <deller@gmx.de>
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* Portions Copyright (C) 2001 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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*
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* Based on:
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@ -514,7 +514,7 @@ rattlerSetupPlanes(struct stifb_info *fb)
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SETUP_HW(fb);
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WRITE_BYTE(1, fb, REG_16b1);
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fb_memset(fb->info.fix.smem_start, 0xff,
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fb_memset((void*)fb->info.fix.smem_start, 0xff,
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fb->info.var.yres*fb->info.fix.line_length);
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CRX24_SET_OVLY_MASK(fb);
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@ -908,83 +908,6 @@ SETUP_HCRX(struct stifb_info *fb)
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/* ------------------- driver specific functions --------------------------- */
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#define TMPBUFLEN 2048
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static ssize_t
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stifb_read(struct file *file, char *buf, size_t count, loff_t *ppos)
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{
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unsigned long p = *ppos;
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struct inode *inode = file->f_dentry->d_inode;
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int fbidx = iminor(inode);
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struct fb_info *info = registered_fb[fbidx];
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char tmpbuf[TMPBUFLEN];
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if (!info || ! info->screen_base)
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return -ENODEV;
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if (p >= info->fix.smem_len)
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return 0;
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if (count >= info->fix.smem_len)
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count = info->fix.smem_len;
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if (count + p > info->fix.smem_len)
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count = info->fix.smem_len - p;
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if (count > sizeof(tmpbuf))
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count = sizeof(tmpbuf);
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if (count) {
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char *base_addr;
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base_addr = info->screen_base;
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memcpy_fromio(&tmpbuf, base_addr+p, count);
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count -= copy_to_user(buf, &tmpbuf, count);
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if (!count)
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return -EFAULT;
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*ppos += count;
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}
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return count;
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}
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static ssize_t
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stifb_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
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{
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struct inode *inode = file->f_dentry->d_inode;
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int fbidx = iminor(inode);
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struct fb_info *info = registered_fb[fbidx];
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unsigned long p = *ppos;
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size_t c;
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int err;
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char tmpbuf[TMPBUFLEN];
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if (!info || !info->screen_base)
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return -ENODEV;
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if (p > info->fix.smem_len)
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return -ENOSPC;
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if (count >= info->fix.smem_len)
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count = info->fix.smem_len;
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err = 0;
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if (count + p > info->fix.smem_len) {
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count = info->fix.smem_len - p;
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err = -ENOSPC;
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}
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p += (unsigned long)info->screen_base;
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c = count;
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while (c) {
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int len = c > sizeof(tmpbuf) ? sizeof(tmpbuf) : c;
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err = -EFAULT;
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if (copy_from_user(&tmpbuf, buf, len))
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break;
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memcpy_toio(p, &tmpbuf, len);
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c -= len;
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p += len;
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buf += len;
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*ppos += len;
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}
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if (count-c)
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return (count-c);
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return err;
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}
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static int
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stifb_setcolreg(u_int regno, u_int red, u_int green,
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u_int blue, u_int transp, struct fb_info *info)
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@ -1137,8 +1060,6 @@ stifb_init_display(struct stifb_info *fb)
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static struct fb_ops stifb_ops = {
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.owner = THIS_MODULE,
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.fb_read = stifb_read,
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.fb_write = stifb_write,
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.fb_setcolreg = stifb_setcolreg,
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.fb_blank = stifb_blank,
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.fb_fillrect = cfb_fillrect,
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@ -1162,7 +1083,7 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
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char *dev_name;
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int bpp, xres, yres;
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fb = kmalloc(sizeof(*fb), GFP_ATOMIC);
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fb = kzalloc(sizeof(*fb), GFP_ATOMIC);
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if (!fb) {
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printk(KERN_ERR "stifb: Could not allocate stifb structure\n");
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return -ENODEV;
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@ -1171,7 +1092,6 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
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info = &fb->info;
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/* set struct to a known state */
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memset(fb, 0, sizeof(*fb));
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fix = &info->fix;
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var = &info->var;
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@ -1234,7 +1154,7 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
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case S9000_ID_TOMCAT: /* Dual CRX, behaves else like a CRX */
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/* FIXME: TomCat supports two heads:
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* fb.iobase = REGION_BASE(fb_info,3);
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* fb.screen_base = (void*) REGION_BASE(fb_info,2);
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* fb.screen_base = ioremap_nocache(REGION_BASE(fb_info,2),xxx);
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* for now we only support the left one ! */
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xres = fb->ngle_rom.x_size_visible;
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yres = fb->ngle_rom.y_size_visible;
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@ -1327,7 +1247,8 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
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strcpy(fix->id, "stifb");
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info->fbops = &stifb_ops;
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info->screen_base = (void*) REGION_BASE(fb,1);
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info->screen_base = ioremap_nocache(REGION_BASE(fb,1), fix->smem_len);
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info->screen_size = fix->smem_len;
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info->flags = FBINFO_DEFAULT;
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info->pseudo_palette = &fb->pseudo_palette;
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