cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

emulation.c (1279B)

      1#include "qemu/osdep.h"
      2#include "qemu/units.h"
      3#include "qemu/bswap.h"
      4#include "hw/scsi/emulation.h"
      5
      6int scsi_emulate_block_limits(uint8_t *outbuf, const SCSIBlockLimits *bl)
      7{
      8    /* required VPD size with unmap support */
      9    memset(outbuf, 0, 0x3c);
     10
     11    outbuf[0] = bl->wsnz; /* wsnz */
     12
     13    if (bl->max_io_sectors) {
     14        /* optimal transfer length granularity.  This field and the optimal
     15         * transfer length can't be greater than maximum transfer length.
     16         */
     17        stw_be_p(outbuf + 2, MIN(bl->min_io_size, bl->max_io_sectors));
     18
     19        /* maximum transfer length */
     20        stl_be_p(outbuf + 4, bl->max_io_sectors);
     21
     22        /* optimal transfer length */
     23        stl_be_p(outbuf + 8, MIN(bl->opt_io_size, bl->max_io_sectors));
     24    } else {
     25        stw_be_p(outbuf + 2, bl->min_io_size);
     26        stl_be_p(outbuf + 8, bl->opt_io_size);
     27    }
     28
     29    /* max unmap LBA count */
     30    stl_be_p(outbuf + 16, bl->max_unmap_sectors);
     31
     32    /* max unmap descriptors */
     33    stl_be_p(outbuf + 20, bl->max_unmap_descr);
     34
     35    /* optimal unmap granularity; alignment is zero */
     36    stl_be_p(outbuf + 24, bl->unmap_sectors);
     37
     38    /* max write same size, make it the same as maximum transfer length */
     39    stl_be_p(outbuf + 36, bl->max_io_sectors);
     40
     41    return 0x3c;
     42}