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Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging

# gpg: Signature made Mon 11 Jan 2016 19:16:27 GMT using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"

* remotes/jnsnow/tags/ide-pull-request:
  libqos/ahci: organize header
  qtest/ahci: ATAPI data tests
  libqos/ahci: add ahci_exec
  libqos/ahci: allow nondata commands for ahci_io variants
  libqos: allow zero-size allocations
  libqos/ahci: Switch to mutable properties
  libqos/ahci: ATAPI identify
  libqos/ahci: ATAPI support
  ahci-test: fix memory leak
  ide: ahci: reset ncq object to unused on error
  macio: fix overflow in lba to offset conversion for ATAPI devices

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2016-01-12 10:38:08 +00:00
commit cf57c2f18b
6 changed files with 339 additions and 42 deletions

View file

@ -910,6 +910,7 @@ static void ncq_err(NCQTransferState *ncq_tfs)
ide_state->error = ABRT_ERR;
ide_state->status = READY_STAT | ERR_STAT;
ncq_tfs->drive->port_regs.scr_err |= (1 << ncq_tfs->tag);
ncq_tfs->used = 0;
}
static void ncq_finish(NCQTransferState *ncq_tfs)

View file

@ -280,7 +280,7 @@ static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
}
/* Calculate current offset */
offset = (int64_t)(s->lba << 11) + s->io_buffer_index;
offset = ((int64_t)s->lba << 11) + s->io_buffer_index;
pmac_dma_read(s->blk, offset, io->len, pmac_ide_atapi_transfer_cb, io);
return;

View file

@ -215,6 +215,7 @@ static AHCIQState *ahci_boot_and_enable(const char *cli, ...)
va_list ap;
uint16_t buff[256];
uint8_t port;
uint8_t hello;
if (cli) {
va_start(ap, cli);
@ -229,7 +230,12 @@ static AHCIQState *ahci_boot_and_enable(const char *cli, ...)
/* Initialize test device */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
ahci_io(ahci, port, CMD_IDENTIFY, &buff, sizeof(buff), 0);
if (is_atapi(ahci, port)) {
hello = CMD_PACKET_ID;
} else {
hello = CMD_IDENTIFY;
}
ahci_io(ahci, port, hello, &buff, sizeof(buff), 0);
return ahci;
}
@ -884,18 +890,12 @@ static void ahci_test_io_rw_simple(AHCIQState *ahci, unsigned bufsize,
static uint8_t ahci_test_nondata(AHCIQState *ahci, uint8_t ide_cmd)
{
uint8_t port;
AHCICommand *cmd;
/* Sanitize */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
/* Issue Command */
cmd = ahci_command_create(ide_cmd);
ahci_command_commit(ahci, cmd, port);
ahci_command_issue(ahci, cmd);
ahci_command_verify(ahci, cmd);
ahci_command_free(cmd);
ahci_io(ahci, port, ide_cmd, NULL, 0, 0);
return port;
}
@ -1045,14 +1045,14 @@ static void test_dma_fragmented(void)
ahci_command_commit(ahci, cmd, px);
ahci_command_issue(ahci, cmd);
ahci_command_verify(ahci, cmd);
g_free(cmd);
ahci_command_free(cmd);
cmd = ahci_command_create(CMD_READ_DMA);
ahci_command_adjust(cmd, 0, ptr, bufsize, 32);
ahci_command_commit(ahci, cmd, px);
ahci_command_issue(ahci, cmd);
ahci_command_verify(ahci, cmd);
g_free(cmd);
ahci_command_free(cmd);
/* Read back the guest's receive buffer into local memory */
bufread(ptr, rx, bufsize);
@ -1080,7 +1080,6 @@ static void test_flush_retry(void)
AHCIQState *ahci;
AHCICommand *cmd;
uint8_t port;
const char *s;
prepare_blkdebug_script(debug_path, "flush_to_disk");
ahci = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
@ -1094,19 +1093,10 @@ static void test_flush_retry(void)
/* Issue Flush Command and wait for error */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
cmd = ahci_command_create(CMD_FLUSH_CACHE);
ahci_command_commit(ahci, cmd, port);
ahci_command_issue_async(ahci, cmd);
qmp_eventwait("STOP");
/* Complete the command */
s = "{'execute':'cont' }";
qmp_async(s);
qmp_eventwait("RESUME");
ahci_command_wait(ahci, cmd);
ahci_command_verify(ahci, cmd);
cmd = ahci_guest_io_halt(ahci, port, CMD_FLUSH_CACHE, 0, 0, 0);
ahci_guest_io_resume(ahci, cmd);
ahci_command_free(cmd);
ahci_shutdown(ahci);
}
@ -1423,6 +1413,98 @@ static void test_ncq_simple(void)
ahci_shutdown(ahci);
}
static int prepare_iso(size_t size, unsigned char **buf, char **name)
{
char cdrom_path[] = "/tmp/qtest.iso.XXXXXX";
unsigned char *patt;
ssize_t ret;
int fd = mkstemp(cdrom_path);
g_assert(buf);
g_assert(name);
patt = g_malloc(size);
/* Generate a pattern and build a CDROM image to read from */
generate_pattern(patt, size, ATAPI_SECTOR_SIZE);
ret = write(fd, patt, size);
g_assert(ret == size);
*name = g_strdup(cdrom_path);
*buf = patt;
return fd;
}
static void remove_iso(int fd, char *name)
{
unlink(name);
g_free(name);
close(fd);
}
static int ahci_cb_cmp_buff(AHCIQState *ahci, AHCICommand *cmd,
const AHCIOpts *opts)
{
unsigned char *tx = opts->opaque;
unsigned char *rx = g_malloc0(opts->size);
bufread(opts->buffer, rx, opts->size);
g_assert_cmphex(memcmp(tx, rx, opts->size), ==, 0);
g_free(rx);
return 0;
}
static void ahci_test_cdrom(int nsectors, bool dma)
{
AHCIQState *ahci;
unsigned char *tx;
char *iso;
int fd;
AHCIOpts opts = {
.size = (ATAPI_SECTOR_SIZE * nsectors),
.atapi = true,
.atapi_dma = dma,
.post_cb = ahci_cb_cmp_buff,
};
/* Prepare ISO and fill 'tx' buffer */
fd = prepare_iso(1024 * 1024, &tx, &iso);
opts.opaque = tx;
/* Standard startup wonkery, but use ide-cd and our special iso file */
ahci = ahci_boot_and_enable("-drive if=none,id=drive0,file=%s,format=raw "
"-M q35 "
"-device ide-cd,drive=drive0 ", iso);
/* Build & Send AHCI command */
ahci_exec(ahci, ahci_port_select(ahci), CMD_ATAPI_READ_10, &opts);
/* Cleanup */
g_free(tx);
ahci_shutdown(ahci);
remove_iso(fd, iso);
}
static void test_cdrom_dma(void)
{
ahci_test_cdrom(1, true);
}
static void test_cdrom_dma_multi(void)
{
ahci_test_cdrom(3, true);
}
static void test_cdrom_pio(void)
{
ahci_test_cdrom(1, false);
}
static void test_cdrom_pio_multi(void)
{
ahci_test_cdrom(3, false);
}
/******************************************************************************/
/* AHCI I/O Test Matrix Definitions */
@ -1707,6 +1789,11 @@ int main(int argc, char **argv)
qtest_add_func("/ahci/io/ncq/retry", test_halted_ncq);
qtest_add_func("/ahci/migrate/ncq/halted", test_migrate_halted_ncq);
qtest_add_func("/ahci/cdrom/dma/single", test_cdrom_dma);
qtest_add_func("/ahci/cdrom/dma/multi", test_cdrom_dma_multi);
qtest_add_func("/ahci/cdrom/pio/single", test_cdrom_pio);
qtest_add_func("/ahci/cdrom/pio/multi", test_cdrom_pio_multi);
ret = g_test_run();
/* Cleanup */

View file

@ -74,7 +74,11 @@ AHCICommandProp ahci_command_properties[] = {
.lba48 = true, .write = true, .ncq = true },
{ .cmd = CMD_READ_MAX, .lba28 = true },
{ .cmd = CMD_READ_MAX_EXT, .lba48 = true },
{ .cmd = CMD_FLUSH_CACHE, .data = false }
{ .cmd = CMD_FLUSH_CACHE, .data = false },
{ .cmd = CMD_PACKET, .data = true, .size = 16,
.atapi = true, .pio = true },
{ .cmd = CMD_PACKET_ID, .data = true, .pio = true,
.size = 512, .read = true }
};
struct AHCICommand {
@ -90,7 +94,7 @@ struct AHCICommand {
/* Data to be transferred to the guest */
AHCICommandHeader header;
RegH2DFIS fis;
void *atapi_cmd;
unsigned char *atapi_cmd;
};
/**
@ -110,6 +114,11 @@ void ahci_free(AHCIQState *ahci, uint64_t addr)
qfree(ahci->parent, addr);
}
bool is_atapi(AHCIQState *ahci, uint8_t port)
{
return ahci_px_rreg(ahci, port, AHCI_PX_SIG) == AHCI_SIGNATURE_CDROM;
}
/**
* Locate, verify, and return a handle to the AHCI device.
*/
@ -592,6 +601,82 @@ inline unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd)
return (bytes + bytes_per_prd - 1) / bytes_per_prd;
}
const AHCIOpts default_opts = { .size = 0 };
/**
* ahci_exec: execute a given command on a specific
* AHCI port.
*
* @ahci: The device to send the command to
* @port: The port number of the SATA device we wish
* to have execute this command
* @op: The S/ATA command to execute, or if opts.atapi
* is true, the SCSI command code.
* @opts: Optional arguments to modify execution behavior.
*/
void ahci_exec(AHCIQState *ahci, uint8_t port,
uint8_t op, const AHCIOpts *opts_in)
{
AHCICommand *cmd;
int rc;
AHCIOpts *opts;
opts = g_memdup((opts_in == NULL ? &default_opts : opts_in),
sizeof(AHCIOpts));
/* No guest buffer provided, create one. */
if (opts->size && !opts->buffer) {
opts->buffer = ahci_alloc(ahci, opts->size);
g_assert(opts->buffer);
qmemset(opts->buffer, 0x00, opts->size);
}
/* Command creation */
if (opts->atapi) {
cmd = ahci_atapi_command_create(op);
if (opts->atapi_dma) {
ahci_command_enable_atapi_dma(cmd);
}
} else {
cmd = ahci_command_create(op);
}
ahci_command_adjust(cmd, opts->lba, opts->buffer,
opts->size, opts->prd_size);
if (opts->pre_cb) {
rc = opts->pre_cb(ahci, cmd, opts);
g_assert_cmpint(rc, ==, 0);
}
/* Write command to memory and issue it */
ahci_command_commit(ahci, cmd, port);
ahci_command_issue_async(ahci, cmd);
if (opts->error) {
qmp_eventwait("STOP");
}
if (opts->mid_cb) {
rc = opts->mid_cb(ahci, cmd, opts);
g_assert_cmpint(rc, ==, 0);
}
if (opts->error) {
qmp_async("{'execute':'cont' }");
qmp_eventwait("RESUME");
}
/* Wait for command to complete and verify sanity */
ahci_command_wait(ahci, cmd);
ahci_command_verify(ahci, cmd);
if (opts->post_cb) {
rc = opts->post_cb(ahci, cmd, opts);
g_assert_cmpint(rc, ==, 0);
}
ahci_command_free(cmd);
if (opts->buffer != opts_in->buffer) {
ahci_free(ahci, opts->buffer);
}
g_free(opts);
}
/* Issue a command, expecting it to fail and STOP the VM */
AHCICommand *ahci_guest_io_halt(AHCIQState *ahci, uint8_t port,
uint8_t ide_cmd, uint64_t buffer,
@ -659,16 +744,16 @@ void ahci_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
props = ahci_command_find(ide_cmd);
g_assert(props);
ptr = ahci_alloc(ahci, bufsize);
g_assert(ptr);
g_assert(!bufsize || ptr);
qmemset(ptr, 0x00, bufsize);
if (props->write) {
if (bufsize && props->write) {
bufwrite(ptr, buffer, bufsize);
}
ahci_guest_io(ahci, port, ide_cmd, ptr, bufsize, sector);
if (props->read) {
if (bufsize && props->read) {
bufread(ptr, buffer, bufsize);
}
@ -731,6 +816,18 @@ static void command_table_init(AHCICommand *cmd)
memset(fis->aux, 0x00, ARRAY_SIZE(fis->aux));
}
void ahci_command_enable_atapi_dma(AHCICommand *cmd)
{
RegH2DFIS *fis = &(cmd->fis);
g_assert(cmd->props->atapi);
fis->feature_low |= 0x01;
cmd->interrupts &= ~AHCI_PX_IS_PSS;
cmd->props->dma = true;
cmd->props->pio = false;
/* BUG: We expect the DMA Setup interrupt for DMA commands */
/* cmd->interrupts |= AHCI_PX_IS_DSS; */
}
AHCICommand *ahci_command_create(uint8_t command_name)
{
AHCICommandProp *props = ahci_command_find(command_name);
@ -745,7 +842,7 @@ AHCICommand *ahci_command_create(uint8_t command_name)
g_assert(!props->ncq || props->lba48);
/* Defaults and book-keeping */
cmd->props = props;
cmd->props = g_memdup(props, sizeof(AHCICommandProp));
cmd->name = command_name;
cmd->xbytes = props->size;
cmd->prd_size = 4096;
@ -767,8 +864,23 @@ AHCICommand *ahci_command_create(uint8_t command_name)
return cmd;
}
AHCICommand *ahci_atapi_command_create(uint8_t scsi_cmd)
{
AHCICommand *cmd = ahci_command_create(CMD_PACKET);
cmd->atapi_cmd = g_malloc0(16);
cmd->atapi_cmd[0] = scsi_cmd;
/* ATAPI needs a PIO transfer chunk size set inside of the LBA registers.
* The block/sector size is a natural default. */
cmd->fis.lba_lo[1] = ATAPI_SECTOR_SIZE >> 8 & 0xFF;
cmd->fis.lba_lo[2] = ATAPI_SECTOR_SIZE & 0xFF;
return cmd;
}
void ahci_command_free(AHCICommand *cmd)
{
g_free(cmd->atapi_cmd);
g_free(cmd->props);
g_free(cmd);
}
@ -782,10 +894,34 @@ void ahci_command_clr_flags(AHCICommand *cmd, uint16_t cmdh_flags)
cmd->header.flags &= ~cmdh_flags;
}
static void ahci_atapi_command_set_offset(AHCICommand *cmd, uint64_t lba)
{
unsigned char *cbd = cmd->atapi_cmd;
g_assert(cbd);
switch (cbd[0]) {
case CMD_ATAPI_READ_10:
g_assert_cmpuint(lba, <=, UINT32_MAX);
stl_be_p(&cbd[2], lba);
break;
default:
/* SCSI doesn't have uniform packet formats,
* so you have to add support for it manually. Sorry! */
g_assert_not_reached();
}
}
void ahci_command_set_offset(AHCICommand *cmd, uint64_t lba_sect)
{
RegH2DFIS *fis = &(cmd->fis);
if (cmd->props->lba28) {
if (cmd->props->atapi) {
ahci_atapi_command_set_offset(cmd, lba_sect);
return;
} else if (!cmd->props->data && !lba_sect) {
/* Not meaningful, ignore. */
return;
} else if (cmd->props->lba28) {
g_assert_cmphex(lba_sect, <=, 0xFFFFFFF);
} else if (cmd->props->lba48 || cmd->props->ncq) {
g_assert_cmphex(lba_sect, <=, 0xFFFFFFFFFFFF);
@ -811,6 +947,24 @@ void ahci_command_set_buffer(AHCICommand *cmd, uint64_t buffer)
cmd->buffer = buffer;
}
static void ahci_atapi_set_size(AHCICommand *cmd, uint64_t xbytes)
{
unsigned char *cbd = cmd->atapi_cmd;
uint64_t nsectors = xbytes / 2048;
g_assert(cbd);
switch (cbd[0]) {
case CMD_ATAPI_READ_10:
g_assert_cmpuint(nsectors, <=, UINT16_MAX);
stw_be_p(&cbd[7], nsectors);
break;
default:
/* SCSI doesn't have uniform packet formats,
* so you have to add support for it manually. Sorry! */
g_assert_not_reached();
}
}
void ahci_command_set_sizes(AHCICommand *cmd, uint64_t xbytes,
unsigned prd_size)
{
@ -829,6 +983,8 @@ void ahci_command_set_sizes(AHCICommand *cmd, uint64_t xbytes,
NCQFIS *nfis = (NCQFIS *)&(cmd->fis);
nfis->sector_low = sect_count & 0xFF;
nfis->sector_hi = (sect_count >> 8) & 0xFF;
} else if (cmd->props->atapi) {
ahci_atapi_set_size(cmd, xbytes);
} else {
cmd->fis.count = sect_count;
}
@ -877,9 +1033,14 @@ void ahci_command_commit(AHCIQState *ahci, AHCICommand *cmd, uint8_t port)
g_assert((table_ptr & 0x7F) == 0x00);
cmd->header.ctba = table_ptr;
/* Commit the command header and command FIS */
/* Commit the command header (part of the Command List Buffer) */
ahci_set_command_header(ahci, port, cmd->slot, &(cmd->header));
/* Now, write the command table (FIS, ACMD, and PRDT) -- FIS first, */
ahci_write_fis(ahci, cmd);
/* Then ATAPI CMD, if needed */
if (cmd->props->atapi) {
memwrite(table_ptr + 0x40, cmd->atapi_cmd, 16);
}
/* Construct and write the PRDs to the command table */
g_assert_cmphex(prdtl, ==, cmd->header.prdtl);

View file

@ -244,6 +244,10 @@
#define AHCI_VERSION_1_3 (0x00010300)
#define AHCI_SECTOR_SIZE (512)
#define ATAPI_SECTOR_SIZE (2048)
#define AHCI_SIGNATURE_CDROM (0xeb140101)
#define AHCI_SIGNATURE_DISK (0x00000101)
/* FIS types */
enum {
@ -277,11 +281,18 @@ enum {
CMD_READ_MAX_EXT = 0x27,
CMD_FLUSH_CACHE = 0xE7,
CMD_IDENTIFY = 0xEC,
CMD_PACKET = 0xA0,
CMD_PACKET_ID = 0xA1,
/* NCQ */
READ_FPDMA_QUEUED = 0x60,
WRITE_FPDMA_QUEUED = 0x61,
};
/* ATAPI Commands */
enum {
CMD_ATAPI_READ_10 = 0x28,
};
/* AHCI Command Header Flags & Masks*/
#define CMDH_CFL (0x1F)
#define CMDH_ATAPI (0x20)
@ -451,6 +462,21 @@ typedef struct PRD {
/* Opaque, defined within ahci.c */
typedef struct AHCICommand AHCICommand;
/* Options to ahci_exec */
typedef struct AHCIOpts {
size_t size;
unsigned prd_size;
uint64_t lba;
uint64_t buffer;
bool atapi;
bool atapi_dma;
bool error;
int (*pre_cb)(AHCIQState*, AHCICommand*, const struct AHCIOpts *);
int (*mid_cb)(AHCIQState*, AHCICommand*, const struct AHCIOpts *);
int (*post_cb)(AHCIQState*, AHCICommand*, const struct AHCIOpts *);
void *opaque;
} AHCIOpts;
/*** Macro Utilities ***/
#define BITANY(data, mask) (((data) & (mask)) != 0)
#define BITSET(data, mask) (((data) & (mask)) == (mask))
@ -527,14 +553,28 @@ static inline void ahci_px_clr(AHCIQState *ahci, uint8_t port,
/*** Prototypes ***/
uint64_t ahci_alloc(AHCIQState *ahci, size_t bytes);
void ahci_free(AHCIQState *ahci, uint64_t addr);
void ahci_clean_mem(AHCIQState *ahci);
/* Device management */
QPCIDevice *get_ahci_device(uint32_t *fingerprint);
void free_ahci_device(QPCIDevice *dev);
void ahci_clean_mem(AHCIQState *ahci);
void ahci_pci_enable(AHCIQState *ahci);
void start_ahci_device(AHCIQState *ahci);
void ahci_hba_enable(AHCIQState *ahci);
/* Port Management */
unsigned ahci_port_select(AHCIQState *ahci);
void ahci_port_clear(AHCIQState *ahci, uint8_t port);
/* Command header / table management */
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port);
void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_set_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot);
/* AHCI sanity check routines */
void ahci_port_check_error(AHCIQState *ahci, uint8_t port);
void ahci_port_check_interrupts(AHCIQState *ahci, uint8_t port,
uint32_t intr_mask);
@ -543,14 +583,12 @@ void ahci_port_check_d2h_sanity(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_port_check_pio_sanity(AHCIQState *ahci, uint8_t port,
uint8_t slot, size_t buffsize);
void ahci_port_check_cmd_sanity(AHCIQState *ahci, AHCICommand *cmd);
void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_set_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_write_fis(AHCIQState *ahci, AHCICommand *cmd);
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port);
/* Misc */
bool is_atapi(AHCIQState *ahci, uint8_t port);
unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd);
/* Command: Macro level execution */
void ahci_guest_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
uint64_t gbuffer, size_t size, uint64_t sector);
AHCICommand *ahci_guest_io_halt(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
@ -558,9 +596,12 @@ AHCICommand *ahci_guest_io_halt(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
void ahci_guest_io_resume(AHCIQState *ahci, AHCICommand *cmd);
void ahci_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
void *buffer, size_t bufsize, uint64_t sector);
void ahci_exec(AHCIQState *ahci, uint8_t port,
uint8_t op, const AHCIOpts *opts);
/* Command Lifecycle */
/* Command: Fine-grained lifecycle */
AHCICommand *ahci_command_create(uint8_t command_name);
AHCICommand *ahci_atapi_command_create(uint8_t scsi_cmd);
void ahci_command_commit(AHCIQState *ahci, AHCICommand *cmd, uint8_t port);
void ahci_command_issue(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_issue_async(AHCIQState *ahci, AHCICommand *cmd);
@ -568,7 +609,7 @@ void ahci_command_wait(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_verify(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_free(AHCICommand *cmd);
/* Command adjustments */
/* Command: adjustments */
void ahci_command_set_flags(AHCICommand *cmd, uint16_t cmdh_flags);
void ahci_command_clr_flags(AHCICommand *cmd, uint16_t cmdh_flags);
void ahci_command_set_offset(AHCICommand *cmd, uint64_t lba_sect);
@ -577,10 +618,13 @@ void ahci_command_set_size(AHCICommand *cmd, uint64_t xbytes);
void ahci_command_set_prd_size(AHCICommand *cmd, unsigned prd_size);
void ahci_command_set_sizes(AHCICommand *cmd, uint64_t xbytes,
unsigned prd_size);
void ahci_command_set_acmd(AHCICommand *cmd, void *acmd);
void ahci_command_enable_atapi_dma(AHCICommand *cmd);
void ahci_command_adjust(AHCICommand *cmd, uint64_t lba_sect, uint64_t gbuffer,
uint64_t xbytes, unsigned prd_size);
/* Command Misc */
/* Command: Misc */
uint8_t ahci_command_slot(AHCICommand *cmd);
void ahci_write_fis(AHCIQState *ahci, AHCICommand *cmd);
#endif

View file

@ -270,6 +270,10 @@ uint64_t guest_alloc(QGuestAllocator *allocator, size_t size)
uint64_t rsize = size;
uint64_t naddr;
if (!size) {
return 0;
}
rsize += (allocator->page_size - 1);
rsize &= -allocator->page_size;
g_assert_cmpint((allocator->start + rsize), <=, allocator->end);