diff options
author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/openbios/arch/unix/blk.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/openbios/arch/unix/blk.c')
-rw-r--r-- | qemu/roms/openbios/arch/unix/blk.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/qemu/roms/openbios/arch/unix/blk.c b/qemu/roms/openbios/arch/unix/blk.c new file mode 100644 index 000000000..d0f5c6a42 --- /dev/null +++ b/qemu/roms/openbios/arch/unix/blk.c @@ -0,0 +1,115 @@ +/* + * <arch/unix/blk.c> + * + * block device emulation for unix hosts + * + * Copyright (C) 2004 Stefan Reinauer <stepan@openbios.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 + * + */ + +#include "config.h" +#include "libopenbios/bindings.h" +#include "blk.h" + +typedef struct { + int unit; + int channel; +} blk_data_t; + + +DECLARE_NODE( blk, INSTALL_OPEN, sizeof(blk_data_t), "+/unix/block/disk" ); + +static void +blk_open( blk_data_t *pb ) +{ + phandle_t ph; + + fword("my-unit"); + + pb->unit = POP(); + pb->channel = 0; /* FIXME */ + + selfword("open-deblocker"); + + /* interpose disk-label */ + ph = find_dev("/packages/disk-label"); + fword("my-args"); + PUSH_ph( ph ); + fword("interpose"); + + /* printk("osi-blk: open %d\n", pb->unit ); */ + + PUSH( -1 ); +} + +static void +blk_close( __attribute__((unused)) blk_data_t *pb ) +{ + selfword("close-deblocker"); +} + + +/* ( buf blk nblks -- actual ) */ +static void +blk_read_blocks( blk_data_t *pb ) +{ + cell i, n = POP(); + cell blk = POP(); + char *dest = (char*)POP(); + + // printk("blk_read_blocks %x block=%d n=%d\n", (ucell)dest, blk, n ); + + for( i=0; i<n; ) { + char buf[4096]; + ucell m = MIN( n-i, sizeof(buf)/512 ); + + if( read_from_disk(pb->channel, pb->unit, blk+i, (ucell)buf, m*512) < 0 ) { + printk("read_from_disk: error\n"); + RET(0); + } + memcpy( dest, buf, m * 512 ); + i += m; + dest += m * 512; + } + PUSH( n ); +} + +/* ( -- bs ) */ +static void +blk_block_size( __attribute__((unused)) blk_data_t *pb ) +{ + PUSH( 512 ); +} + +/* ( -- maxbytes ) */ +static void +blk_max_transfer( __attribute__((unused)) blk_data_t *pb ) +{ + PUSH( 1024*1024 ); +} + +static void +blk_initialize( __attribute__((unused)) blk_data_t *pb ) +{ + fword("is-deblocker"); +} + + +NODE_METHODS( blk ) = { + { NULL, blk_initialize }, + { "open", blk_open }, + { "close", blk_close }, + { "read-blocks", blk_read_blocks }, + { "block-size", blk_block_size }, + { "max-transfer", blk_max_transfer}, +}; + +void +blk_init( void ) +{ + REGISTER_NODE( blk ); +} |