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65fddcfca8
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include of the latter in the middle of asm includes. Fix this up with the aid of the below script and manual adjustments here and there. import sys import re if len(sys.argv) is not 3: print "USAGE: %s <file> <header>" % (sys.argv[0]) sys.exit(1) hdr_to_move="#include <linux/%s>" % sys.argv[2] moved = False in_hdrs = False with open(sys.argv[1], "r") as f: lines = f.readlines() for _line in lines: line = _line.rstrip(' ') if line == hdr_to_move: continue if line.startswith("#include <linux/"): in_hdrs = True elif not moved and in_hdrs: moved = True print hdr_to_move print line Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
430 lines
9.5 KiB
C
430 lines
9.5 KiB
C
/*
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** z2ram - Amiga pseudo-driver to access 16bit-RAM in ZorroII space
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** as a block device, to be used as a RAM disk or swap space
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**
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** Copyright (C) 1994 by Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
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**
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** ++Geert: support for zorro_unused_z2ram, better range checking
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** ++roman: translate accesses via an array
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** ++Milan: support for ChipRAM usage
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** ++yambo: converted to 2.0 kernel
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** ++yambo: modularized and support added for 3 minor devices including:
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** MAJOR MINOR DESCRIPTION
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** ----- ----- ----------------------------------------------
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** 37 0 Use Zorro II and Chip ram
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** 37 1 Use only Zorro II ram
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** 37 2 Use only Chip ram
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** 37 4-7 Use memory list entry 1-4 (first is 0)
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** ++jskov: support for 1-4th memory list entry.
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**
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** Permission to use, copy, modify, and distribute this software and its
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** documentation for any purpose and without fee is hereby granted, provided
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** that the above copyright notice appear in all copies and that both that
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** copyright notice and this permission notice appear in supporting
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** documentation. This software is provided "as is" without express or
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** implied warranty.
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*/
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#define DEVICE_NAME "Z2RAM"
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#include <linux/major.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/blk-mq.h>
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#include <linux/bitops.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/pgtable.h>
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#include <asm/setup.h>
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#include <asm/amigahw.h>
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#include <linux/zorro.h>
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#define Z2MINOR_COMBINED (0)
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#define Z2MINOR_Z2ONLY (1)
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#define Z2MINOR_CHIPONLY (2)
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#define Z2MINOR_MEMLIST1 (4)
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#define Z2MINOR_MEMLIST2 (5)
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#define Z2MINOR_MEMLIST3 (6)
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#define Z2MINOR_MEMLIST4 (7)
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#define Z2MINOR_COUNT (8) /* Move this down when adding a new minor */
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#define Z2RAM_CHUNK1024 ( Z2RAM_CHUNKSIZE >> 10 )
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static DEFINE_MUTEX(z2ram_mutex);
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static u_long *z2ram_map = NULL;
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static u_long z2ram_size = 0;
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static int z2_count = 0;
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static int chip_count = 0;
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static int list_count = 0;
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static int current_device = -1;
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static DEFINE_SPINLOCK(z2ram_lock);
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static struct gendisk *z2ram_gendisk;
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static blk_status_t z2_queue_rq(struct blk_mq_hw_ctx *hctx,
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const struct blk_mq_queue_data *bd)
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{
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struct request *req = bd->rq;
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unsigned long start = blk_rq_pos(req) << 9;
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unsigned long len = blk_rq_cur_bytes(req);
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blk_mq_start_request(req);
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if (start + len > z2ram_size) {
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pr_err(DEVICE_NAME ": bad access: block=%llu, "
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"count=%u\n",
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(unsigned long long)blk_rq_pos(req),
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blk_rq_cur_sectors(req));
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return BLK_STS_IOERR;
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}
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spin_lock_irq(&z2ram_lock);
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while (len) {
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unsigned long addr = start & Z2RAM_CHUNKMASK;
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unsigned long size = Z2RAM_CHUNKSIZE - addr;
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void *buffer = bio_data(req->bio);
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if (len < size)
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size = len;
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addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
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if (rq_data_dir(req) == READ)
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memcpy(buffer, (char *)addr, size);
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else
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memcpy((char *)addr, buffer, size);
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start += size;
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len -= size;
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}
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spin_unlock_irq(&z2ram_lock);
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blk_mq_end_request(req, BLK_STS_OK);
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return BLK_STS_OK;
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}
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static void
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get_z2ram( void )
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{
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int i;
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for ( i = 0; i < Z2RAM_SIZE / Z2RAM_CHUNKSIZE; i++ )
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{
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if ( test_bit( i, zorro_unused_z2ram ) )
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{
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z2_count++;
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z2ram_map[z2ram_size++] = (unsigned long)ZTWO_VADDR(Z2RAM_START) +
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(i << Z2RAM_CHUNKSHIFT);
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clear_bit( i, zorro_unused_z2ram );
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}
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}
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return;
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}
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static void
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get_chipram( void )
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{
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while ( amiga_chip_avail() > ( Z2RAM_CHUNKSIZE * 4 ) )
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{
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chip_count++;
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z2ram_map[ z2ram_size ] =
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(u_long)amiga_chip_alloc( Z2RAM_CHUNKSIZE, "z2ram" );
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if ( z2ram_map[ z2ram_size ] == 0 )
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{
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break;
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}
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z2ram_size++;
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}
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return;
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}
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static int z2_open(struct block_device *bdev, fmode_t mode)
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{
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int device;
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int max_z2_map = ( Z2RAM_SIZE / Z2RAM_CHUNKSIZE ) *
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sizeof( z2ram_map[0] );
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int max_chip_map = ( amiga_chip_size / Z2RAM_CHUNKSIZE ) *
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sizeof( z2ram_map[0] );
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int rc = -ENOMEM;
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device = MINOR(bdev->bd_dev);
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mutex_lock(&z2ram_mutex);
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if ( current_device != -1 && current_device != device )
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{
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rc = -EBUSY;
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goto err_out;
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}
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if ( current_device == -1 )
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{
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z2_count = 0;
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chip_count = 0;
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list_count = 0;
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z2ram_size = 0;
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/* Use a specific list entry. */
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if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
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int index = device - Z2MINOR_MEMLIST1 + 1;
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unsigned long size, paddr, vaddr;
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if (index >= m68k_realnum_memory) {
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printk( KERN_ERR DEVICE_NAME
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": no such entry in z2ram_map\n" );
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goto err_out;
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}
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paddr = m68k_memory[index].addr;
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size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE-1);
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#ifdef __powerpc__
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/* FIXME: ioremap doesn't build correct memory tables. */
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{
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vfree(vmalloc (size));
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}
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vaddr = (unsigned long)ioremap_wt(paddr, size);
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#else
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vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size);
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#endif
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z2ram_map =
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kmalloc_array(size / Z2RAM_CHUNKSIZE,
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sizeof(z2ram_map[0]),
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GFP_KERNEL);
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if ( z2ram_map == NULL )
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{
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printk( KERN_ERR DEVICE_NAME
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": cannot get mem for z2ram_map\n" );
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goto err_out;
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}
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while (size) {
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z2ram_map[ z2ram_size++ ] = vaddr;
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size -= Z2RAM_CHUNKSIZE;
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vaddr += Z2RAM_CHUNKSIZE;
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list_count++;
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}
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if ( z2ram_size != 0 )
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printk( KERN_INFO DEVICE_NAME
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": using %iK List Entry %d Memory\n",
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list_count * Z2RAM_CHUNK1024, index );
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} else
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switch ( device )
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{
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case Z2MINOR_COMBINED:
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z2ram_map = kmalloc( max_z2_map + max_chip_map, GFP_KERNEL );
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if ( z2ram_map == NULL )
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{
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printk( KERN_ERR DEVICE_NAME
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": cannot get mem for z2ram_map\n" );
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goto err_out;
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}
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get_z2ram();
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get_chipram();
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if ( z2ram_size != 0 )
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printk( KERN_INFO DEVICE_NAME
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": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
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z2_count * Z2RAM_CHUNK1024,
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chip_count * Z2RAM_CHUNK1024,
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( z2_count + chip_count ) * Z2RAM_CHUNK1024 );
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break;
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case Z2MINOR_Z2ONLY:
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z2ram_map = kmalloc( max_z2_map, GFP_KERNEL );
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if ( z2ram_map == NULL )
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{
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printk( KERN_ERR DEVICE_NAME
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": cannot get mem for z2ram_map\n" );
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goto err_out;
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}
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get_z2ram();
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if ( z2ram_size != 0 )
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printk( KERN_INFO DEVICE_NAME
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": using %iK of Zorro II RAM\n",
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z2_count * Z2RAM_CHUNK1024 );
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break;
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case Z2MINOR_CHIPONLY:
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z2ram_map = kmalloc( max_chip_map, GFP_KERNEL );
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if ( z2ram_map == NULL )
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{
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printk( KERN_ERR DEVICE_NAME
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": cannot get mem for z2ram_map\n" );
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goto err_out;
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}
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get_chipram();
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if ( z2ram_size != 0 )
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printk( KERN_INFO DEVICE_NAME
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": using %iK Chip RAM\n",
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chip_count * Z2RAM_CHUNK1024 );
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break;
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default:
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rc = -ENODEV;
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goto err_out;
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break;
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}
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if ( z2ram_size == 0 )
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{
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printk( KERN_NOTICE DEVICE_NAME
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": no unused ZII/Chip RAM found\n" );
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goto err_out_kfree;
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}
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current_device = device;
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z2ram_size <<= Z2RAM_CHUNKSHIFT;
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set_capacity(z2ram_gendisk, z2ram_size >> 9);
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}
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mutex_unlock(&z2ram_mutex);
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return 0;
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err_out_kfree:
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kfree(z2ram_map);
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err_out:
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mutex_unlock(&z2ram_mutex);
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return rc;
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}
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static void
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z2_release(struct gendisk *disk, fmode_t mode)
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{
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mutex_lock(&z2ram_mutex);
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if ( current_device == -1 ) {
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mutex_unlock(&z2ram_mutex);
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return;
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}
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mutex_unlock(&z2ram_mutex);
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/*
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* FIXME: unmap memory
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*/
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}
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static const struct block_device_operations z2_fops =
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{
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.owner = THIS_MODULE,
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.open = z2_open,
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.release = z2_release,
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};
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static struct kobject *z2_find(dev_t dev, int *part, void *data)
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{
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*part = 0;
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return get_disk_and_module(z2ram_gendisk);
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}
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static struct request_queue *z2_queue;
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static struct blk_mq_tag_set tag_set;
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static const struct blk_mq_ops z2_mq_ops = {
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.queue_rq = z2_queue_rq,
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};
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static int __init
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z2_init(void)
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{
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int ret;
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if (!MACH_IS_AMIGA)
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return -ENODEV;
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ret = -EBUSY;
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if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
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goto err;
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ret = -ENOMEM;
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z2ram_gendisk = alloc_disk(1);
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if (!z2ram_gendisk)
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goto out_disk;
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z2_queue = blk_mq_init_sq_queue(&tag_set, &z2_mq_ops, 16,
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BLK_MQ_F_SHOULD_MERGE);
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if (IS_ERR(z2_queue)) {
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ret = PTR_ERR(z2_queue);
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z2_queue = NULL;
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goto out_queue;
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}
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z2ram_gendisk->major = Z2RAM_MAJOR;
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z2ram_gendisk->first_minor = 0;
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z2ram_gendisk->fops = &z2_fops;
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sprintf(z2ram_gendisk->disk_name, "z2ram");
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z2ram_gendisk->queue = z2_queue;
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add_disk(z2ram_gendisk);
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blk_register_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT, THIS_MODULE,
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z2_find, NULL, NULL);
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return 0;
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out_queue:
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put_disk(z2ram_gendisk);
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out_disk:
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unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
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err:
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return ret;
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}
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static void __exit z2_exit(void)
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{
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int i, j;
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blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT);
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unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
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del_gendisk(z2ram_gendisk);
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put_disk(z2ram_gendisk);
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blk_cleanup_queue(z2_queue);
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blk_mq_free_tag_set(&tag_set);
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if ( current_device != -1 )
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{
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i = 0;
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for ( j = 0 ; j < z2_count; j++ )
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{
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set_bit( i++, zorro_unused_z2ram );
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}
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for ( j = 0 ; j < chip_count; j++ )
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{
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if ( z2ram_map[ i ] )
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{
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amiga_chip_free( (void *) z2ram_map[ i++ ] );
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}
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}
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if ( z2ram_map != NULL )
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{
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kfree( z2ram_map );
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}
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}
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return;
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}
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module_init(z2_init);
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module_exit(z2_exit);
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MODULE_LICENSE("GPL");
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