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qemu-e2k/tests/qtest/ahci-test.c
Philippe Mathieu-Daudé df1a312fea tests/qtest/ahci: Improve error handling (NEGATIVE_RETURNS) 
Fix an error handling issue reported by Coverity:

  /qemu/tests/qtest/ahci-test.c: 1452 in prepare_iso()
  1444         int fd = mkstemp(cdrom_path);
  >>>     CID 1432375:  Error handling issues  (NEGATIVE_RETURNS)
  >>>     "fd" is passed to a parameter that cannot be negative.
  1452         ret = write(fd, patt, size);

Reported-by: Coverity (CID 1432375)
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200902080552.159806-1-philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-09-03 12:47:33 +02:00

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/*
* AHCI test cases
*
* Copyright (c) 2014 John Snow <jsnow@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include <getopt.h>
#include "libqos/libqtest.h"
#include "libqos/libqos-pc.h"
#include "libqos/ahci.h"
#include "libqos/pci-pc.h"
#include "qemu-common.h"
#include "qapi/qmp/qdict.h"
#include "qemu/host-utils.h"
#include "hw/pci/pci_ids.h"
#include "hw/pci/pci_regs.h"
/* TODO actually test the results and get rid of this */
#define qmp_discard_response(s, ...) qobject_unref(qtest_qmp(s, __VA_ARGS__))
/* Test images sizes in MB */
#define TEST_IMAGE_SIZE_MB_LARGE (200 * 1024)
#define TEST_IMAGE_SIZE_MB_SMALL 64
/*** Globals ***/
static char tmp_path[] = "/tmp/qtest.XXXXXX";
static char debug_path[] = "/tmp/qtest-blkdebug.XXXXXX";
static char mig_socket[] = "/tmp/qtest-migration.XXXXXX";
static bool ahci_pedantic;
static const char *imgfmt;
static unsigned test_image_size_mb;
/*** Function Declarations ***/
static void ahci_test_port_spec(AHCIQState *ahci, uint8_t port);
static void ahci_test_pci_spec(AHCIQState *ahci);
static void ahci_test_pci_caps(AHCIQState *ahci, uint16_t header,
uint8_t offset);
static void ahci_test_satacap(AHCIQState *ahci, uint8_t offset);
static void ahci_test_msicap(AHCIQState *ahci, uint8_t offset);
static void ahci_test_pmcap(AHCIQState *ahci, uint8_t offset);
/*** Utilities ***/
static uint64_t mb_to_sectors(uint64_t image_size_mb)
{
return (image_size_mb * 1024 * 1024) / AHCI_SECTOR_SIZE;
}
static void string_bswap16(uint16_t *s, size_t bytes)
{
g_assert_cmphex((bytes & 1), ==, 0);
bytes /= 2;
while (bytes--) {
*s = bswap16(*s);
s++;
}
}
/**
* Verify that the transfer did not corrupt our state at all.
*/
static void verify_state(AHCIQState *ahci, uint64_t hba_old)
{
int i, j;
uint32_t ahci_fingerprint;
uint64_t hba_base;
AHCICommandHeader cmd;
ahci_fingerprint = qpci_config_readl(ahci->dev, PCI_VENDOR_ID);
g_assert_cmphex(ahci_fingerprint, ==, ahci->fingerprint);
/* If we haven't initialized, this is as much as can be validated. */
if (!ahci->enabled) {
return;
}
hba_base = (uint64_t)qpci_config_readl(ahci->dev, PCI_BASE_ADDRESS_5);
g_assert_cmphex(hba_base, ==, hba_old);
g_assert_cmphex(ahci_rreg(ahci, AHCI_CAP), ==, ahci->cap);
g_assert_cmphex(ahci_rreg(ahci, AHCI_CAP2), ==, ahci->cap2);
for (i = 0; i < 32; i++) {
g_assert_cmphex(ahci_px_rreg(ahci, i, AHCI_PX_FB), ==,
ahci->port[i].fb);
g_assert_cmphex(ahci_px_rreg(ahci, i, AHCI_PX_CLB), ==,
ahci->port[i].clb);
for (j = 0; j < 32; j++) {
ahci_get_command_header(ahci, i, j, &cmd);
g_assert_cmphex(cmd.prdtl, ==, ahci->port[i].prdtl[j]);
g_assert_cmphex(cmd.ctba, ==, ahci->port[i].ctba[j]);
}
}
}
static void ahci_migrate(AHCIQState *from, AHCIQState *to, const char *uri)
{
QOSState *tmp = to->parent;
QPCIDevice *dev = to->dev;
char *uri_local = NULL;
uint64_t hba_old;
if (uri == NULL) {
uri_local = g_strdup_printf("%s%s", "unix:", mig_socket);
uri = uri_local;
}
hba_old = (uint64_t)qpci_config_readl(from->dev, PCI_BASE_ADDRESS_5);
/* context will be 'to' after completion. */
migrate(from->parent, to->parent, uri);
/* We'd like for the AHCIState objects to still point
* to information specific to its specific parent
* instance, but otherwise just inherit the new data. */
memcpy(to, from, sizeof(AHCIQState));
to->parent = tmp;
to->dev = dev;
tmp = from->parent;
dev = from->dev;
memset(from, 0x00, sizeof(AHCIQState));
from->parent = tmp;
from->dev = dev;
verify_state(to, hba_old);
g_free(uri_local);
}
/*** Test Setup & Teardown ***/
/**
* Start a Q35 machine and bookmark a handle to the AHCI device.
*/
static AHCIQState *ahci_vboot(const char *cli, va_list ap)
{
AHCIQState *s;
s = g_new0(AHCIQState, 1);
s->parent = qtest_pc_vboot(cli, ap);
alloc_set_flags(&s->parent->alloc, ALLOC_LEAK_ASSERT);
/* Verify that we have an AHCI device present. */
s->dev = get_ahci_device(s->parent->qts, &s->fingerprint);
return s;
}
/**
* Start a Q35 machine and bookmark a handle to the AHCI device.
*/
static AHCIQState *ahci_boot(const char *cli, ...)
{
AHCIQState *s;
va_list ap;
if (cli) {
va_start(ap, cli);
s = ahci_vboot(cli, ap);
va_end(ap);
} else {
cli = "-drive if=none,id=drive0,file=%s,cache=writeback,format=%s"
" -M q35 "
"-device ide-hd,drive=drive0 "
"-global ide-hd.serial=%s "
"-global ide-hd.ver=%s";
s = ahci_boot(cli, tmp_path, imgfmt, "testdisk", "version");
}
return s;
}
/**
* Clean up the PCI device, then terminate the QEMU instance.
*/
static void ahci_shutdown(AHCIQState *ahci)
{
QOSState *qs = ahci->parent;
ahci_clean_mem(ahci);
free_ahci_device(ahci->dev);
g_free(ahci);
qtest_shutdown(qs);
}
/**
* Boot and fully enable the HBA device.
* @see ahci_boot, ahci_pci_enable and ahci_hba_enable.
*/
static AHCIQState *ahci_boot_and_enable(const char *cli, ...)
{
AHCIQState *ahci;
va_list ap;
uint16_t buff[256];
uint8_t port;
uint8_t hello;
if (cli) {
va_start(ap, cli);
ahci = ahci_vboot(cli, ap);
va_end(ap);
} else {
ahci = ahci_boot(NULL);
}
ahci_pci_enable(ahci);
ahci_hba_enable(ahci);
/* Initialize test device */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
if (is_atapi(ahci, port)) {
hello = CMD_PACKET_ID;
} else {
hello = CMD_IDENTIFY;
}
ahci_io(ahci, port, hello, &buff, sizeof(buff), 0);
return ahci;
}
/*** Specification Adherence Tests ***/
/**
* Implementation for test_pci_spec. Ensures PCI configuration space is sane.
*/
static void ahci_test_pci_spec(AHCIQState *ahci)
{
uint8_t datab;
uint16_t data;
uint32_t datal;
/* Most of these bits should start cleared until we turn them on. */
data = qpci_config_readw(ahci->dev, PCI_COMMAND);
ASSERT_BIT_CLEAR(data, PCI_COMMAND_MEMORY);
ASSERT_BIT_CLEAR(data, PCI_COMMAND_MASTER);
ASSERT_BIT_CLEAR(data, PCI_COMMAND_SPECIAL); /* Reserved */
ASSERT_BIT_CLEAR(data, PCI_COMMAND_VGA_PALETTE); /* Reserved */
ASSERT_BIT_CLEAR(data, PCI_COMMAND_PARITY);
ASSERT_BIT_CLEAR(data, PCI_COMMAND_WAIT); /* Reserved */
ASSERT_BIT_CLEAR(data, PCI_COMMAND_SERR);
ASSERT_BIT_CLEAR(data, PCI_COMMAND_FAST_BACK);
ASSERT_BIT_CLEAR(data, PCI_COMMAND_INTX_DISABLE);
ASSERT_BIT_CLEAR(data, 0xF800); /* Reserved */
data = qpci_config_readw(ahci->dev, PCI_STATUS);
ASSERT_BIT_CLEAR(data, 0x01 | 0x02 | 0x04); /* Reserved */
ASSERT_BIT_CLEAR(data, PCI_STATUS_INTERRUPT);
ASSERT_BIT_SET(data, PCI_STATUS_CAP_LIST); /* must be set */
ASSERT_BIT_CLEAR(data, PCI_STATUS_UDF); /* Reserved */
ASSERT_BIT_CLEAR(data, PCI_STATUS_PARITY);
ASSERT_BIT_CLEAR(data, PCI_STATUS_SIG_TARGET_ABORT);
ASSERT_BIT_CLEAR(data, PCI_STATUS_REC_TARGET_ABORT);
ASSERT_BIT_CLEAR(data, PCI_STATUS_REC_MASTER_ABORT);
ASSERT_BIT_CLEAR(data, PCI_STATUS_SIG_SYSTEM_ERROR);
ASSERT_BIT_CLEAR(data, PCI_STATUS_DETECTED_PARITY);
/* RID occupies the low byte, CCs occupy the high three. */
datal = qpci_config_readl(ahci->dev, PCI_CLASS_REVISION);
if (ahci_pedantic) {
/* AHCI 1.3 specifies that at-boot, the RID should reset to 0x00,
* Though in practice this is likely seldom true. */
ASSERT_BIT_CLEAR(datal, 0xFF);
}
/* BCC *must* equal 0x01. */
g_assert_cmphex(PCI_BCC(datal), ==, 0x01);
if (PCI_SCC(datal) == 0x01) {
/* IDE */
ASSERT_BIT_SET(0x80000000, datal);
ASSERT_BIT_CLEAR(0x60000000, datal);
} else if (PCI_SCC(datal) == 0x04) {
/* RAID */
g_assert_cmphex(PCI_PI(datal), ==, 0);
} else if (PCI_SCC(datal) == 0x06) {
/* AHCI */
g_assert_cmphex(PCI_PI(datal), ==, 0x01);
} else {
g_assert_not_reached();
}
datab = qpci_config_readb(ahci->dev, PCI_CACHE_LINE_SIZE);
g_assert_cmphex(datab, ==, 0);
datab = qpci_config_readb(ahci->dev, PCI_LATENCY_TIMER);
g_assert_cmphex(datab, ==, 0);
/* Only the bottom 7 bits must be off. */
datab = qpci_config_readb(ahci->dev, PCI_HEADER_TYPE);
ASSERT_BIT_CLEAR(datab, 0x7F);
/* BIST is optional, but the low 7 bits must always start off regardless. */
datab = qpci_config_readb(ahci->dev, PCI_BIST);
ASSERT_BIT_CLEAR(datab, 0x7F);
/* BARS 0-4 do not have a boot spec, but ABAR/BAR5 must be clean. */
datal = qpci_config_readl(ahci->dev, PCI_BASE_ADDRESS_5);
g_assert_cmphex(datal, ==, 0);
qpci_config_writel(ahci->dev, PCI_BASE_ADDRESS_5, 0xFFFFFFFF);
datal = qpci_config_readl(ahci->dev, PCI_BASE_ADDRESS_5);
/* ABAR must be 32-bit, memory mapped, non-prefetchable and
* must be >= 512 bytes. To that end, bits 0-8 must be off. */
ASSERT_BIT_CLEAR(datal, 0xFF);
/* Capability list MUST be present, */
datal = qpci_config_readl(ahci->dev, PCI_CAPABILITY_LIST);
/* But these bits are reserved. */
ASSERT_BIT_CLEAR(datal, ~0xFF);
g_assert_cmphex(datal, !=, 0);
/* Check specification adherence for capability extenstions. */
data = qpci_config_readw(ahci->dev, datal);
switch (ahci->fingerprint) {
case AHCI_INTEL_ICH9:
/* Intel ICH9 Family Datasheet 14.1.19 p.550 */
g_assert_cmphex((data & 0xFF), ==, PCI_CAP_ID_MSI);
break;
default:
/* AHCI 1.3, Section 2.1.14 -- CAP must point to PMCAP. */
g_assert_cmphex((data & 0xFF), ==, PCI_CAP_ID_PM);
}
ahci_test_pci_caps(ahci, data, (uint8_t)datal);
/* Reserved. */
datal = qpci_config_readl(ahci->dev, PCI_CAPABILITY_LIST + 4);
g_assert_cmphex(datal, ==, 0);
/* IPIN might vary, but ILINE must be off. */
datab = qpci_config_readb(ahci->dev, PCI_INTERRUPT_LINE);
g_assert_cmphex(datab, ==, 0);
}
/**
* Test PCI capabilities for AHCI specification adherence.
*/
static void ahci_test_pci_caps(AHCIQState *ahci, uint16_t header,
uint8_t offset)
{
uint8_t cid = header & 0xFF;
uint8_t next = header >> 8;
g_test_message("CID: %02x; next: %02x", cid, next);
switch (cid) {
case PCI_CAP_ID_PM:
ahci_test_pmcap(ahci, offset);
break;
case PCI_CAP_ID_MSI:
ahci_test_msicap(ahci, offset);
break;
case PCI_CAP_ID_SATA:
ahci_test_satacap(ahci, offset);
break;
default:
g_test_message("Unknown CAP 0x%02x", cid);
}
if (next) {
ahci_test_pci_caps(ahci, qpci_config_readw(ahci->dev, next), next);
}
}
/**
* Test SATA PCI capabilitity for AHCI specification adherence.
*/
static void ahci_test_satacap(AHCIQState *ahci, uint8_t offset)
{
uint16_t dataw;
uint32_t datal;
g_test_message("Verifying SATACAP");
/* Assert that the SATACAP version is 1.0, And reserved bits are empty. */
dataw = qpci_config_readw(ahci->dev, offset + 2);
g_assert_cmphex(dataw, ==, 0x10);
/* Grab the SATACR1 register. */
datal = qpci_config_readw(ahci->dev, offset + 4);
switch (datal & 0x0F) {
case 0x04: /* BAR0 */
case 0x05: /* BAR1 */
case 0x06:
case 0x07:
case 0x08:
case 0x09: /* BAR5 */
case 0x0F: /* Immediately following SATACR1 in PCI config space. */
break;
default:
/* Invalid BARLOC for the Index Data Pair. */
g_assert_not_reached();
}
/* Reserved. */
g_assert_cmphex((datal >> 24), ==, 0x00);
}
/**
* Test MSI PCI capability for AHCI specification adherence.
*/
static void ahci_test_msicap(AHCIQState *ahci, uint8_t offset)
{
uint16_t dataw;
uint32_t datal;
g_test_message("Verifying MSICAP");
dataw = qpci_config_readw(ahci->dev, offset + PCI_MSI_FLAGS);
ASSERT_BIT_CLEAR(dataw, PCI_MSI_FLAGS_ENABLE);
ASSERT_BIT_CLEAR(dataw, PCI_MSI_FLAGS_QSIZE);
ASSERT_BIT_CLEAR(dataw, PCI_MSI_FLAGS_RESERVED);
datal = qpci_config_readl(ahci->dev, offset + PCI_MSI_ADDRESS_LO);
g_assert_cmphex(datal, ==, 0);
if (dataw & PCI_MSI_FLAGS_64BIT) {
g_test_message("MSICAP is 64bit");
datal = qpci_config_readl(ahci->dev, offset + PCI_MSI_ADDRESS_HI);
g_assert_cmphex(datal, ==, 0);
dataw = qpci_config_readw(ahci->dev, offset + PCI_MSI_DATA_64);
g_assert_cmphex(dataw, ==, 0);
} else {
g_test_message("MSICAP is 32bit");
dataw = qpci_config_readw(ahci->dev, offset + PCI_MSI_DATA_32);
g_assert_cmphex(dataw, ==, 0);
}
}
/**
* Test Power Management PCI capability for AHCI specification adherence.
*/
static void ahci_test_pmcap(AHCIQState *ahci, uint8_t offset)
{
uint16_t dataw;
g_test_message("Verifying PMCAP");
dataw = qpci_config_readw(ahci->dev, offset + PCI_PM_PMC);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CAP_PME_CLOCK);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CAP_RESERVED);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CAP_D1);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CAP_D2);
dataw = qpci_config_readw(ahci->dev, offset + PCI_PM_CTRL);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CTRL_STATE_MASK);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CTRL_RESERVED);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CTRL_DATA_SEL_MASK);
ASSERT_BIT_CLEAR(dataw, PCI_PM_CTRL_DATA_SCALE_MASK);
}
static void ahci_test_hba_spec(AHCIQState *ahci)
{
unsigned i;
uint32_t reg;
uint32_t ports;
uint8_t nports_impl;
uint8_t maxports;
g_assert(ahci != NULL);
/*
* Note that the AHCI spec does expect the BIOS to set up a few things:
* CAP.SSS - Support for staggered spin-up (t/f)
* CAP.SMPS - Support for mechanical presence switches (t/f)
* PI - Ports Implemented (1-32)
* PxCMD.HPCP - Hot Plug Capable Port
* PxCMD.MPSP - Mechanical Presence Switch Present
* PxCMD.CPD - Cold Presence Detection support
*
* Additional items are touched if CAP.SSS is on, see AHCI 10.1.1 p.97:
* Foreach Port Implemented:
* -PxCMD.ST, PxCMD.CR, PxCMD.FRE, PxCMD.FR, PxSCTL.DET are 0
* -PxCLB/U and PxFB/U are set to valid regions in memory
* -PxSUD is set to 1.
* -PxSSTS.DET is polled for presence; if detected, we continue:
* -PxSERR is cleared with 1's.
* -If PxTFD.STS.BSY, PxTFD.STS.DRQ, and PxTFD.STS.ERR are all zero,
* the device is ready.
*/
/* 1 CAP - Capabilities Register */
ahci->cap = ahci_rreg(ahci, AHCI_CAP);
ASSERT_BIT_CLEAR(ahci->cap, AHCI_CAP_RESERVED);
/* 2 GHC - Global Host Control */
reg = ahci_rreg(ahci, AHCI_GHC);
ASSERT_BIT_CLEAR(reg, AHCI_GHC_HR);
ASSERT_BIT_CLEAR(reg, AHCI_GHC_IE);
ASSERT_BIT_CLEAR(reg, AHCI_GHC_MRSM);
if (BITSET(ahci->cap, AHCI_CAP_SAM)) {
g_test_message("Supports AHCI-Only Mode: GHC_AE is Read-Only.");
ASSERT_BIT_SET(reg, AHCI_GHC_AE);
} else {
g_test_message("Supports AHCI/Legacy mix.");
ASSERT_BIT_CLEAR(reg, AHCI_GHC_AE);
}
/* 3 IS - Interrupt Status */
reg = ahci_rreg(ahci, AHCI_IS);
g_assert_cmphex(reg, ==, 0);
/* 4 PI - Ports Implemented */
ports = ahci_rreg(ahci, AHCI_PI);
/* Ports Implemented must be non-zero. */
g_assert_cmphex(ports, !=, 0);
/* Ports Implemented must be <= Number of Ports. */
nports_impl = ctpopl(ports);
g_assert_cmpuint(((AHCI_CAP_NP & ahci->cap) + 1), >=, nports_impl);
/* Ports must be within the proper range. Given a mapping of SIZE,
* 256 bytes are used for global HBA control, and the rest is used
* for ports data, at 0x80 bytes each. */
g_assert_cmphex(ahci->barsize, >, 0);
maxports = (ahci->barsize - HBA_DATA_REGION_SIZE) / HBA_PORT_DATA_SIZE;
/* e.g, 30 ports for 4K of memory. (4096 - 256) / 128 = 30 */
g_assert_cmphex((reg >> maxports), ==, 0);
/* 5 AHCI Version */
reg = ahci_rreg(ahci, AHCI_VS);
switch (reg) {
case AHCI_VERSION_0_95:
case AHCI_VERSION_1_0:
case AHCI_VERSION_1_1:
case AHCI_VERSION_1_2:
case AHCI_VERSION_1_3:
break;
default:
g_assert_not_reached();
}
/* 6 Command Completion Coalescing Control: depends on CAP.CCCS. */
reg = ahci_rreg(ahci, AHCI_CCCCTL);
if (BITSET(ahci->cap, AHCI_CAP_CCCS)) {
ASSERT_BIT_CLEAR(reg, AHCI_CCCCTL_EN);
ASSERT_BIT_CLEAR(reg, AHCI_CCCCTL_RESERVED);
ASSERT_BIT_SET(reg, AHCI_CCCCTL_CC);
ASSERT_BIT_SET(reg, AHCI_CCCCTL_TV);
} else {
g_assert_cmphex(reg, ==, 0);
}
/* 7 CCC_PORTS */
reg = ahci_rreg(ahci, AHCI_CCCPORTS);
/* Must be zeroes initially regardless of CAP.CCCS */
g_assert_cmphex(reg, ==, 0);
/* 8 EM_LOC */
reg = ahci_rreg(ahci, AHCI_EMLOC);
if (BITCLR(ahci->cap, AHCI_CAP_EMS)) {
g_assert_cmphex(reg, ==, 0);
}
/* 9 EM_CTL */
reg = ahci_rreg(ahci, AHCI_EMCTL);
if (BITSET(ahci->cap, AHCI_CAP_EMS)) {
ASSERT_BIT_CLEAR(reg, AHCI_EMCTL_STSMR);
ASSERT_BIT_CLEAR(reg, AHCI_EMCTL_CTLTM);
ASSERT_BIT_CLEAR(reg, AHCI_EMCTL_CTLRST);
ASSERT_BIT_CLEAR(reg, AHCI_EMCTL_RESERVED);
} else {
g_assert_cmphex(reg, ==, 0);
}
/* 10 CAP2 -- Capabilities Extended */
ahci->cap2 = ahci_rreg(ahci, AHCI_CAP2);
ASSERT_BIT_CLEAR(ahci->cap2, AHCI_CAP2_RESERVED);
/* 11 BOHC -- Bios/OS Handoff Control */
reg = ahci_rreg(ahci, AHCI_BOHC);
g_assert_cmphex(reg, ==, 0);
/* 12 -- 23: Reserved */
g_test_message("Verifying HBA reserved area is empty.");
for (i = AHCI_RESERVED; i < AHCI_NVMHCI; ++i) {
reg = ahci_rreg(ahci, i);
g_assert_cmphex(reg, ==, 0);
}
/* 24 -- 39: NVMHCI */
if (BITCLR(ahci->cap2, AHCI_CAP2_NVMP)) {
g_test_message("Verifying HBA/NVMHCI area is empty.");
for (i = AHCI_NVMHCI; i < AHCI_VENDOR; ++i) {
reg = ahci_rreg(ahci, i);
g_assert_cmphex(reg, ==, 0);
}
}
/* 40 -- 63: Vendor */
g_test_message("Verifying HBA/Vendor area is empty.");
for (i = AHCI_VENDOR; i < AHCI_PORTS; ++i) {
reg = ahci_rreg(ahci, i);
g_assert_cmphex(reg, ==, 0);
}
/* 64 -- XX: Port Space */
for (i = 0; ports || (i < maxports); ports >>= 1, ++i) {
if (BITSET(ports, 0x1)) {
g_test_message("Testing port %u for spec", i);
ahci_test_port_spec(ahci, i);
} else {
uint16_t j;
uint16_t low = AHCI_PORTS + (32 * i);
uint16_t high = AHCI_PORTS + (32 * (i + 1));
g_test_message("Asserting unimplemented port %u "
"(reg [%u-%u]) is empty.",
i, low, high - 1);
for (j = low; j < high; ++j) {
reg = ahci_rreg(ahci, j);
g_assert_cmphex(reg, ==, 0);
}
}
}
}
/**
* Test the memory space for one port for specification adherence.
*/
static void ahci_test_port_spec(AHCIQState *ahci, uint8_t port)
{
uint32_t reg;
unsigned i;
/* (0) CLB */
reg = ahci_px_rreg(ahci, port, AHCI_PX_CLB);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CLB_RESERVED);
/* (1) CLBU */
if (BITCLR(ahci->cap, AHCI_CAP_S64A)) {
reg = ahci_px_rreg(ahci, port, AHCI_PX_CLBU);
g_assert_cmphex(reg, ==, 0);
}
/* (2) FB */
reg = ahci_px_rreg(ahci, port, AHCI_PX_FB);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FB_RESERVED);
/* (3) FBU */
if (BITCLR(ahci->cap, AHCI_CAP_S64A)) {
reg = ahci_px_rreg(ahci, port, AHCI_PX_FBU);
g_assert_cmphex(reg, ==, 0);
}
/* (4) IS */
reg = ahci_px_rreg(ahci, port, AHCI_PX_IS);
g_assert_cmphex(reg, ==, 0);
/* (5) IE */
reg = ahci_px_rreg(ahci, port, AHCI_PX_IE);
g_assert_cmphex(reg, ==, 0);
/* (6) CMD */
reg = ahci_px_rreg(ahci, port, AHCI_PX_CMD);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_FRE);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_RESERVED);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_CCS);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_FR);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_CR);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_PMA); /* And RW only if CAP.SPM */
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_APSTE); /* RW only if CAP2.APST */
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_ATAPI);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_DLAE);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_ALPE); /* RW only if CAP.SALP */
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_ASP); /* RW only if CAP.SALP */
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_ICC);
/* If CPDetect support does not exist, CPState must be off. */
if (BITCLR(reg, AHCI_PX_CMD_CPD)) {
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_CPS);
}
/* If MPSPresence is not set, MPSState must be off. */
if (BITCLR(reg, AHCI_PX_CMD_MPSP)) {
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_MPSS);
}
/* If we do not support MPS, MPSS and MPSP must be off. */
if (BITCLR(ahci->cap, AHCI_CAP_SMPS)) {
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_MPSS);
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_MPSP);
}
/* If, via CPD or MPSP we detect a drive, HPCP must be on. */
if (BITANY(reg, AHCI_PX_CMD_CPD | AHCI_PX_CMD_MPSP)) {
ASSERT_BIT_SET(reg, AHCI_PX_CMD_HPCP);
}
/* HPCP and ESP cannot both be active. */
g_assert(!BITSET(reg, AHCI_PX_CMD_HPCP | AHCI_PX_CMD_ESP));
/* If CAP.FBSS is not set, FBSCP must not be set. */
if (BITCLR(ahci->cap, AHCI_CAP_FBSS)) {
ASSERT_BIT_CLEAR(reg, AHCI_PX_CMD_FBSCP);
}
/* (7) RESERVED */
reg = ahci_px_rreg(ahci, port, AHCI_PX_RES1);
g_assert_cmphex(reg, ==, 0);
/* (8) TFD */
reg = ahci_px_rreg(ahci, port, AHCI_PX_TFD);
/* At boot, prior to an FIS being received, the TFD register should be 0x7F,
* which breaks down as follows, as seen in AHCI 1.3 sec 3.3.8, p. 27. */
ASSERT_BIT_SET(reg, AHCI_PX_TFD_STS_ERR);
ASSERT_BIT_SET(reg, AHCI_PX_TFD_STS_CS1);
ASSERT_BIT_SET(reg, AHCI_PX_TFD_STS_DRQ);
ASSERT_BIT_SET(reg, AHCI_PX_TFD_STS_CS2);
ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_STS_BSY);
ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_ERR);
ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_RESERVED);
/* (9) SIG */
/* Though AHCI specifies the boot value should be 0xFFFFFFFF,
* Even when GHC.ST is zero, the AHCI HBA may receive the initial
* D2H register FIS and update the signature asynchronously,
* so we cannot expect a value here. AHCI 1.3, sec 3.3.9, pp 27-28 */
/* (10) SSTS / SCR0: SStatus */
reg = ahci_px_rreg(ahci, port, AHCI_PX_SSTS);
ASSERT_BIT_CLEAR(reg, AHCI_PX_SSTS_RESERVED);
/* Even though the register should be 0 at boot, it is asynchronous and
* prone to change, so we cannot test any well known value. */
/* (11) SCTL / SCR2: SControl */
reg = ahci_px_rreg(ahci, port, AHCI_PX_SCTL);
g_assert_cmphex(reg, ==, 0);
/* (12) SERR / SCR1: SError */
reg = ahci_px_rreg(ahci, port, AHCI_PX_SERR);
g_assert_cmphex(reg, ==, 0);
/* (13) SACT / SCR3: SActive */
reg = ahci_px_rreg(ahci, port, AHCI_PX_SACT);
g_assert_cmphex(reg, ==, 0);
/* (14) CI */
reg = ahci_px_rreg(ahci, port, AHCI_PX_CI);
g_assert_cmphex(reg, ==, 0);
/* (15) SNTF */
reg = ahci_px_rreg(ahci, port, AHCI_PX_SNTF);
g_assert_cmphex(reg, ==, 0);
/* (16) FBS */
reg = ahci_px_rreg(ahci, port, AHCI_PX_FBS);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FBS_EN);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FBS_DEC);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FBS_SDE);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FBS_DEV);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FBS_DWE);
ASSERT_BIT_CLEAR(reg, AHCI_PX_FBS_RESERVED);
if (BITSET(ahci->cap, AHCI_CAP_FBSS)) {
/* if Port-Multiplier FIS-based switching avail, ADO must >= 2 */
g_assert((reg & AHCI_PX_FBS_ADO) >> ctzl(AHCI_PX_FBS_ADO) >= 2);
}
/* [17 -- 27] RESERVED */
for (i = AHCI_PX_RES2; i < AHCI_PX_VS; ++i) {
reg = ahci_px_rreg(ahci, port, i);
g_assert_cmphex(reg, ==, 0);
}
/* [28 -- 31] Vendor-Specific */
for (i = AHCI_PX_VS; i < 32; ++i) {
reg = ahci_px_rreg(ahci, port, i);
if (reg) {
g_test_message("INFO: Vendor register %u non-empty", i);
}
}
}
/**
* Utilizing an initialized AHCI HBA, issue an IDENTIFY command to the first
* device we see, then read and check the response.
*/
static void ahci_test_identify(AHCIQState *ahci)
{
uint16_t buff[256];
unsigned px;
int rc;
uint16_t sect_size;
const size_t buffsize = 512;
g_assert(ahci != NULL);
/**
* This serves as a bit of a tutorial on AHCI device programming:
*
* (1) Create a data buffer for the IDENTIFY response to be sent to
* (2) Create a Command Table buffer, where we will store the
* command and PRDT (Physical Region Descriptor Table)
* (3) Construct an FIS host-to-device command structure, and write it to
* the top of the Command Table buffer.
* (4) Create one or more Physical Region Descriptors (PRDs) that describe
* a location in memory where data may be stored/retrieved.
* (5) Write these PRDTs to the bottom (offset 0x80) of the Command Table.
* (6) Each AHCI port has up to 32 command slots. Each slot contains a
* header that points to a Command Table buffer. Pick an unused slot
* and update it to point to the Command Table we have built.
* (7) Now: Command #n points to our Command Table, and our Command Table
* contains the FIS (that describes our command) and the PRDTL, which
* describes our buffer.
* (8) We inform the HBA via PxCI (Command Issue) that the command in slot
* #n is ready for processing.
*/
/* Pick the first implemented and running port */
px = ahci_port_select(ahci);
g_test_message("Selected port %u for test", px);
/* Clear out the FIS Receive area and any pending interrupts. */
ahci_port_clear(ahci, px);
/* "Read" 512 bytes using CMD_IDENTIFY into the host buffer. */
ahci_io(ahci, px, CMD_IDENTIFY, &buff, buffsize, 0);
/* Check serial number/version in the buffer */
/* NB: IDENTIFY strings are packed in 16bit little endian chunks.
* Since we copy byte-for-byte in ahci-test, on both LE and BE, we need to
* unchunk this data. By contrast, ide-test copies 2 bytes at a time, and
* as a consequence, only needs to unchunk the data on LE machines. */
string_bswap16(&buff[10], 20);
rc = memcmp(&buff[10], "testdisk ", 20);
g_assert_cmphex(rc, ==, 0);
string_bswap16(&buff[23], 8);
rc = memcmp(&buff[23], "version ", 8);
g_assert_cmphex(rc, ==, 0);
sect_size = le16_to_cpu(*((uint16_t *)(&buff[5])));
g_assert_cmphex(sect_size, ==, AHCI_SECTOR_SIZE);
}
static void ahci_test_io_rw_simple(AHCIQState *ahci, unsigned bufsize,
uint64_t sector, uint8_t read_cmd,
uint8_t write_cmd)
{
uint64_t ptr;
uint8_t port;
unsigned char *tx = g_malloc(bufsize);
unsigned char *rx = g_malloc0(bufsize);
g_assert(ahci != NULL);
/* Pick the first running port and clear it. */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
/*** Create pattern and transfer to guest ***/
/* Data buffer in the guest */
ptr = ahci_alloc(ahci, bufsize);
g_assert(ptr);
/* Write some indicative pattern to our buffer. */
generate_pattern(tx, bufsize, AHCI_SECTOR_SIZE);
qtest_bufwrite(ahci->parent->qts, ptr, tx, bufsize);
/* Write this buffer to disk, then read it back to the DMA buffer. */
ahci_guest_io(ahci, port, write_cmd, ptr, bufsize, sector);
qtest_memset(ahci->parent->qts, ptr, 0x00, bufsize);
ahci_guest_io(ahci, port, read_cmd, ptr, bufsize, sector);
/*** Read back the Data ***/
qtest_bufread(ahci->parent->qts, ptr, rx, bufsize);
g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
ahci_free(ahci, ptr);
g_free(tx);
g_free(rx);
}
static uint8_t ahci_test_nondata(AHCIQState *ahci, uint8_t ide_cmd)
{
uint8_t port;
/* Sanitize */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
ahci_io(ahci, port, ide_cmd, NULL, 0, 0);
return port;
}
static void ahci_test_flush(AHCIQState *ahci)
{
ahci_test_nondata(ahci, CMD_FLUSH_CACHE);
}
static void ahci_test_max(AHCIQState *ahci)
{
RegD2HFIS *d2h = g_malloc0(0x20);
uint64_t nsect;
uint8_t port;
uint8_t cmd;
uint64_t config_sect = mb_to_sectors(test_image_size_mb) - 1;
if (config_sect > 0xFFFFFF) {
cmd = CMD_READ_MAX_EXT;
} else {
cmd = CMD_READ_MAX;
}
port = ahci_test_nondata(ahci, cmd);
qtest_memread(ahci->parent->qts, ahci->port[port].fb + 0x40, d2h, 0x20);
nsect = (uint64_t)d2h->lba_hi[2] << 40 |
(uint64_t)d2h->lba_hi[1] << 32 |
(uint64_t)d2h->lba_hi[0] << 24 |
(uint64_t)d2h->lba_lo[2] << 16 |
(uint64_t)d2h->lba_lo[1] << 8 |
(uint64_t)d2h->lba_lo[0];
g_assert_cmphex(nsect, ==, config_sect);
g_free(d2h);
}
/******************************************************************************/
/* Test Interfaces */
/******************************************************************************/
/**
* Basic sanity test to boot a machine, find an AHCI device, and shutdown.
*/
static void test_sanity(void)
{
AHCIQState *ahci;
ahci = ahci_boot(NULL);
ahci_shutdown(ahci);
}
/**
* Ensure that the PCI configuration space for the AHCI device is in-line with
* the AHCI 1.3 specification for initial values.
*/
static void test_pci_spec(void)
{
AHCIQState *ahci;
ahci = ahci_boot(NULL);
ahci_test_pci_spec(ahci);
ahci_shutdown(ahci);
}
/**
* Engage the PCI AHCI device and sanity check the response.
* Perform additional PCI config space bringup for the HBA.
*/
static void test_pci_enable(void)
{
AHCIQState *ahci;
ahci = ahci_boot(NULL);
ahci_pci_enable(ahci);
ahci_shutdown(ahci);
}
/**
* Investigate the memory mapped regions of the HBA,
* and test them for AHCI specification adherence.
*/
static void test_hba_spec(void)
{
AHCIQState *ahci;
ahci = ahci_boot(NULL);
ahci_pci_enable(ahci);
ahci_test_hba_spec(ahci);
ahci_shutdown(ahci);
}
/**
* Engage the HBA functionality of the AHCI PCI device,
* and bring it into a functional idle state.
*/
static void test_hba_enable(void)
{
AHCIQState *ahci;
ahci = ahci_boot(NULL);
ahci_pci_enable(ahci);
ahci_hba_enable(ahci);
ahci_shutdown(ahci);
}
/**
* Bring up the device and issue an IDENTIFY command.
* Inspect the state of the HBA device and the data returned.
*/
static void test_identify(void)
{
AHCIQState *ahci;
ahci = ahci_boot_and_enable(NULL);
ahci_test_identify(ahci);
ahci_shutdown(ahci);
}
/**
* Fragmented DMA test: Perform a standard 4K DMA read/write
* test, but make sure the physical regions are fragmented to
* be very small, each just 32 bytes, to see how AHCI performs
* with chunks defined to be much less than a sector.
*/
static void test_dma_fragmented(void)
{
AHCIQState *ahci;
AHCICommand *cmd;
uint8_t px;
size_t bufsize = 4096;
unsigned char *tx = g_malloc(bufsize);
unsigned char *rx = g_malloc0(bufsize);
uint64_t ptr;
ahci = ahci_boot_and_enable(NULL);
px = ahci_port_select(ahci);
ahci_port_clear(ahci, px);
/* create pattern */
generate_pattern(tx, bufsize, AHCI_SECTOR_SIZE);
/* Create a DMA buffer in guest memory, and write our pattern to it. */
ptr = guest_alloc(&ahci->parent->alloc, bufsize);
g_assert(ptr);
qtest_bufwrite(ahci->parent->qts, ptr, tx, bufsize);
cmd = ahci_command_create(CMD_WRITE_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);
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);
ahci_command_free(cmd);
/* Read back the guest's receive buffer into local memory */
qtest_bufread(ahci->parent->qts, ptr, rx, bufsize);
guest_free(&ahci->parent->alloc, ptr);
g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
ahci_shutdown(ahci);
g_free(rx);
g_free(tx);
}
/*
* Write sector 1 with random data to make AHCI storage dirty
* Needed for flush tests so that flushes actually go though the block layer
*/
static void make_dirty(AHCIQState* ahci, uint8_t port)
{
uint64_t ptr;
unsigned bufsize = 512;
ptr = ahci_alloc(ahci, bufsize);
g_assert(ptr);
ahci_guest_io(ahci, port, CMD_WRITE_DMA, ptr, bufsize, 1);
ahci_free(ahci, ptr);
}
static void test_flush(void)
{
AHCIQState *ahci;
uint8_t port;
ahci = ahci_boot_and_enable(NULL);
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
make_dirty(ahci, port);
ahci_test_flush(ahci);
ahci_shutdown(ahci);
}
static void test_flush_retry(void)
{
AHCIQState *ahci;
AHCICommand *cmd;
uint8_t port;
prepare_blkdebug_script(debug_path, "flush_to_disk");
ahci = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
"format=%s,cache=writeback,"
"rerror=stop,werror=stop "
"-M q35 "
"-device ide-hd,drive=drive0 ",
debug_path,
tmp_path, imgfmt);
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
/* Issue write so that flush actually goes to disk */
make_dirty(ahci, port);
/* Issue Flush Command and wait for error */
cmd = ahci_guest_io_halt(ahci, port, CMD_FLUSH_CACHE, 0, 0, 0);
ahci_guest_io_resume(ahci, cmd);
ahci_shutdown(ahci);
}
/**
* Basic sanity test to boot a machine, find an AHCI device, and shutdown.
*/
static void test_migrate_sanity(void)
{
AHCIQState *src, *dst;
char *uri = g_strdup_printf("unix:%s", mig_socket);
src = ahci_boot("-m 384 -M q35 "
"-drive if=ide,file=%s,format=%s ", tmp_path, imgfmt);
dst = ahci_boot("-m 384 -M q35 "
"-drive if=ide,file=%s,format=%s "
"-incoming %s", tmp_path, imgfmt, uri);
ahci_migrate(src, dst, uri);
ahci_shutdown(src);
ahci_shutdown(dst);
g_free(uri);
}
/**
* Simple migration test: Write a pattern, migrate, then read.
*/
static void ahci_migrate_simple(uint8_t cmd_read, uint8_t cmd_write)
{
AHCIQState *src, *dst;
uint8_t px;
size_t bufsize = 4096;
unsigned char *tx = g_malloc(bufsize);
unsigned char *rx = g_malloc0(bufsize);
char *uri = g_strdup_printf("unix:%s", mig_socket);
src = ahci_boot_and_enable("-m 384 -M q35 "
"-drive if=ide,format=%s,file=%s ",
imgfmt, tmp_path);
dst = ahci_boot("-m 384 -M q35 "
"-drive if=ide,format=%s,file=%s "
"-incoming %s", imgfmt, tmp_path, uri);
/* initialize */
px = ahci_port_select(src);
ahci_port_clear(src, px);
/* create pattern */
generate_pattern(tx, bufsize, AHCI_SECTOR_SIZE);
/* Write, migrate, then read. */
ahci_io(src, px, cmd_write, tx, bufsize, 0);
ahci_migrate(src, dst, uri);
ahci_io(dst, px, cmd_read, rx, bufsize, 0);
/* Verify pattern */
g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
ahci_shutdown(src);
ahci_shutdown(dst);
g_free(rx);
g_free(tx);
g_free(uri);
}
static void test_migrate_dma(void)
{
ahci_migrate_simple(CMD_READ_DMA, CMD_WRITE_DMA);
}
static void test_migrate_ncq(void)
{
ahci_migrate_simple(READ_FPDMA_QUEUED, WRITE_FPDMA_QUEUED);
}
/**
* Halted IO Error Test
*
* Simulate an error on first write, Try to write a pattern,
* Confirm the VM has stopped, resume the VM, verify command
* has completed, then read back the data and verify.
*/
static void ahci_halted_io_test(uint8_t cmd_read, uint8_t cmd_write)
{
AHCIQState *ahci;
uint8_t port;
size_t bufsize = 4096;
unsigned char *tx = g_malloc(bufsize);
unsigned char *rx = g_malloc0(bufsize);
uint64_t ptr;
AHCICommand *cmd;
prepare_blkdebug_script(debug_path, "write_aio");
ahci = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
"format=%s,cache=writeback,"
"rerror=stop,werror=stop "
"-M q35 "
"-device ide-hd,drive=drive0 ",
debug_path,
tmp_path, imgfmt);
/* Initialize and prepare */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
/* create DMA source buffer and write pattern */
generate_pattern(tx, bufsize, AHCI_SECTOR_SIZE);
ptr = ahci_alloc(ahci, bufsize);
g_assert(ptr);
qtest_memwrite(ahci->parent->qts, ptr, tx, bufsize);
/* Attempt to write (and fail) */
cmd = ahci_guest_io_halt(ahci, port, cmd_write,
ptr, bufsize, 0);
/* Attempt to resume the command */
ahci_guest_io_resume(ahci, cmd);
ahci_free(ahci, ptr);
/* Read back and verify */
ahci_io(ahci, port, cmd_read, rx, bufsize, 0);
g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
/* Cleanup and go home */
ahci_shutdown(ahci);
g_free(rx);
g_free(tx);
}
static void test_halted_dma(void)
{
ahci_halted_io_test(CMD_READ_DMA, CMD_WRITE_DMA);
}
static void test_halted_ncq(void)
{
ahci_halted_io_test(READ_FPDMA_QUEUED, WRITE_FPDMA_QUEUED);
}
/**
* IO Error Migration Test
*
* Simulate an error on first write, Try to write a pattern,
* Confirm the VM has stopped, migrate, resume the VM,
* verify command has completed, then read back the data and verify.
*/
static void ahci_migrate_halted_io(uint8_t cmd_read, uint8_t cmd_write)
{
AHCIQState *src, *dst;
uint8_t port;
size_t bufsize = 4096;
unsigned char *tx = g_malloc(bufsize);
unsigned char *rx = g_malloc0(bufsize);
uint64_t ptr;
AHCICommand *cmd;
char *uri = g_strdup_printf("unix:%s", mig_socket);
prepare_blkdebug_script(debug_path, "write_aio");
src = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
"format=%s,cache=writeback,"
"rerror=stop,werror=stop "
"-M q35 "
"-device ide-hd,drive=drive0 ",
debug_path,
tmp_path, imgfmt);
dst = ahci_boot("-drive file=%s,if=none,id=drive0,"
"format=%s,cache=writeback,"
"rerror=stop,werror=stop "
"-M q35 "
"-device ide-hd,drive=drive0 "
"-incoming %s",
tmp_path, imgfmt, uri);
/* Initialize and prepare */
port = ahci_port_select(src);
ahci_port_clear(src, port);
generate_pattern(tx, bufsize, AHCI_SECTOR_SIZE);
/* create DMA source buffer and write pattern */
ptr = ahci_alloc(src, bufsize);
g_assert(ptr);
qtest_memwrite(src->parent->qts, ptr, tx, bufsize);
/* Write, trigger the VM to stop, migrate, then resume. */
cmd = ahci_guest_io_halt(src, port, cmd_write,
ptr, bufsize, 0);
ahci_migrate(src, dst, uri);
ahci_guest_io_resume(dst, cmd);
ahci_free(dst, ptr);
/* Read back */
ahci_io(dst, port, cmd_read, rx, bufsize, 0);
/* Verify TX and RX are identical */
g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
/* Cleanup and go home. */
ahci_shutdown(src);
ahci_shutdown(dst);
g_free(rx);
g_free(tx);
g_free(uri);
}
static void test_migrate_halted_dma(void)
{
ahci_migrate_halted_io(CMD_READ_DMA, CMD_WRITE_DMA);
}
static void test_migrate_halted_ncq(void)
{
ahci_migrate_halted_io(READ_FPDMA_QUEUED, WRITE_FPDMA_QUEUED);
}
/**
* Migration test: Try to flush, migrate, then resume.
*/
static void test_flush_migrate(void)
{
AHCIQState *src, *dst;
AHCICommand *cmd;
uint8_t px;
char *uri = g_strdup_printf("unix:%s", mig_socket);
prepare_blkdebug_script(debug_path, "flush_to_disk");
src = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
"cache=writeback,rerror=stop,werror=stop,"
"format=%s "
"-M q35 "
"-device ide-hd,drive=drive0 ",
debug_path, tmp_path, imgfmt);
dst = ahci_boot("-drive file=%s,if=none,id=drive0,"
"cache=writeback,rerror=stop,werror=stop,"
"format=%s "
"-M q35 "
"-device ide-hd,drive=drive0 "
"-incoming %s", tmp_path, imgfmt, uri);
px = ahci_port_select(src);
ahci_port_clear(src, px);
/* Dirty device so that flush reaches disk */
make_dirty(src, px);
/* Issue Flush Command */
cmd = ahci_command_create(CMD_FLUSH_CACHE);
ahci_command_commit(src, cmd, px);
ahci_command_issue_async(src, cmd);
qtest_qmp_eventwait(src->parent->qts, "STOP");
/* Migrate over */
ahci_migrate(src, dst, uri);
/* Complete the command */
qtest_qmp_send(dst->parent->qts, "{'execute':'cont' }");
qtest_qmp_eventwait(dst->parent->qts, "RESUME");
ahci_command_wait(dst, cmd);
ahci_command_verify(dst, cmd);
ahci_command_free(cmd);
ahci_shutdown(src);
ahci_shutdown(dst);
g_free(uri);
}
static void test_max(void)
{
AHCIQState *ahci;
ahci = ahci_boot_and_enable(NULL);
ahci_test_max(ahci);
ahci_shutdown(ahci);
}
static void test_reset(void)
{
AHCIQState *ahci;
int i;
ahci = ahci_boot(NULL);
ahci_test_pci_spec(ahci);
ahci_pci_enable(ahci);
for (i = 0; i < 2; i++) {
ahci_test_hba_spec(ahci);
ahci_hba_enable(ahci);
ahci_test_identify(ahci);
ahci_test_io_rw_simple(ahci, 4096, 0,
CMD_READ_DMA_EXT,
CMD_WRITE_DMA_EXT);
ahci_set(ahci, AHCI_GHC, AHCI_GHC_HR);
ahci_clean_mem(ahci);
}
ahci_shutdown(ahci);
}
static void test_ncq_simple(void)
{
AHCIQState *ahci;
ahci = ahci_boot_and_enable(NULL);
ahci_test_io_rw_simple(ahci, 4096, 0,
READ_FPDMA_QUEUED,
WRITE_FPDMA_QUEUED);
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(fd != -1);
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;
if (!opts->size) {
return 0;
}
rx = g_malloc0(opts->size);
qtest_bufread(ahci->parent->qts, 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, uint8_t cmd,
bool override_bcl, uint16_t bcl)
{
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,
.set_bcl = override_bcl,
.bcl = bcl,
};
uint64_t iso_size = ATAPI_SECTOR_SIZE * (nsectors + 1);
/* Prepare ISO and fill 'tx' buffer */
fd = prepare_iso(iso_size, &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, &opts);
/* Cleanup */
g_free(tx);
ahci_shutdown(ahci);
remove_iso(fd, iso);
}
static void ahci_test_cdrom_read10(int nsectors, bool dma)
{
ahci_test_cdrom(nsectors, dma, CMD_ATAPI_READ_10, false, 0);
}
static void test_cdrom_dma(void)
{
ahci_test_cdrom_read10(1, true);
}
static void test_cdrom_dma_multi(void)
{
ahci_test_cdrom_read10(3, true);
}
static void test_cdrom_pio(void)
{
ahci_test_cdrom_read10(1, false);
}
static void test_cdrom_pio_multi(void)
{
ahci_test_cdrom_read10(3, false);
}
/* Regression test: Test that a READ_CD command with a BCL of 0 but a size of 0
* completes as a NOP instead of erroring out. */
static void test_atapi_bcl(void)
{
ahci_test_cdrom(0, false, CMD_ATAPI_READ_CD, true, 0);
}
static void atapi_wait_tray(AHCIQState *ahci, bool open)
{
QDict *rsp = qtest_qmp_eventwait_ref(ahci->parent->qts,
"DEVICE_TRAY_MOVED");
QDict *data = qdict_get_qdict(rsp, "data");
if (open) {
g_assert(qdict_get_bool(data, "tray-open"));
} else {
g_assert(!qdict_get_bool(data, "tray-open"));
}
qobject_unref(rsp);
}
static void test_atapi_tray(void)
{
AHCIQState *ahci;
unsigned char *tx;
char *iso;
int fd;
uint8_t port, sense, asc;
uint64_t iso_size = ATAPI_SECTOR_SIZE;
QDict *rsp;
fd = prepare_iso(iso_size, &tx, &iso);
ahci = ahci_boot_and_enable("-blockdev node-name=drive0,driver=file,filename=%s "
"-M q35 "
"-device ide-cd,id=cd0,drive=drive0 ", iso);
port = ahci_port_select(ahci);
ahci_atapi_eject(ahci, port);
atapi_wait_tray(ahci, true);
ahci_atapi_load(ahci, port);
atapi_wait_tray(ahci, false);
/* Remove media */
qtest_qmp_send(ahci->parent->qts, "{'execute': 'blockdev-open-tray', "
"'arguments': {'id': 'cd0'}}");
atapi_wait_tray(ahci, true);
rsp = qtest_qmp_receive(ahci->parent->qts);
qobject_unref(rsp);
qmp_discard_response(ahci->parent->qts,
"{'execute': 'blockdev-remove-medium', "
"'arguments': {'id': 'cd0'}}");
/* Test the tray without a medium */
ahci_atapi_load(ahci, port);
atapi_wait_tray(ahci, false);
ahci_atapi_eject(ahci, port);
atapi_wait_tray(ahci, true);
/* Re-insert media */
qmp_discard_response(ahci->parent->qts,
"{'execute': 'blockdev-add', "
"'arguments': {'node-name': 'node0', "
"'driver': 'raw', "
"'file': { 'driver': 'file', "
"'filename': %s }}}", iso);
qmp_discard_response(ahci->parent->qts,
"{'execute': 'blockdev-insert-medium',"
"'arguments': { 'id': 'cd0', "
"'node-name': 'node0' }}");
/* Again, the event shows up first */
qtest_qmp_send(ahci->parent->qts, "{'execute': 'blockdev-close-tray', "
"'arguments': {'id': 'cd0'}}");
atapi_wait_tray(ahci, false);
rsp = qtest_qmp_receive(ahci->parent->qts);
qobject_unref(rsp);
/* Now, to convince ATAPI we understand the media has changed... */
ahci_atapi_test_ready(ahci, port, false, SENSE_NOT_READY);
ahci_atapi_get_sense(ahci, port, &sense, &asc);
g_assert_cmpuint(sense, ==, SENSE_NOT_READY);
g_assert_cmpuint(asc, ==, ASC_MEDIUM_NOT_PRESENT);
ahci_atapi_test_ready(ahci, port, false, SENSE_UNIT_ATTENTION);
ahci_atapi_get_sense(ahci, port, &sense, &asc);
g_assert_cmpuint(sense, ==, SENSE_UNIT_ATTENTION);
g_assert_cmpuint(asc, ==, ASC_MEDIUM_MAY_HAVE_CHANGED);
ahci_atapi_test_ready(ahci, port, true, SENSE_NO_SENSE);
ahci_atapi_get_sense(ahci, port, &sense, &asc);
g_assert_cmpuint(sense, ==, SENSE_NO_SENSE);
/* Final tray test. */
ahci_atapi_eject(ahci, port);
atapi_wait_tray(ahci, true);
ahci_atapi_load(ahci, port);
atapi_wait_tray(ahci, false);
/* Cleanup */
g_free(tx);
ahci_shutdown(ahci);
remove_iso(fd, iso);
}
/******************************************************************************/
/* AHCI I/O Test Matrix Definitions */
enum BuffLen {
LEN_BEGIN = 0,
LEN_SIMPLE = LEN_BEGIN,
LEN_DOUBLE,
LEN_LONG,
LEN_SHORT,
NUM_LENGTHS
};
static const char *buff_len_str[NUM_LENGTHS] = { "simple", "double",
"long", "short" };
enum AddrMode {
ADDR_MODE_BEGIN = 0,
ADDR_MODE_LBA28 = ADDR_MODE_BEGIN,
ADDR_MODE_LBA48,
NUM_ADDR_MODES
};
static const char *addr_mode_str[NUM_ADDR_MODES] = { "lba28", "lba48" };
enum IOMode {
MODE_BEGIN = 0,
MODE_PIO = MODE_BEGIN,
MODE_DMA,
NUM_MODES
};
static const char *io_mode_str[NUM_MODES] = { "pio", "dma" };
enum IOOps {
IO_BEGIN = 0,
IO_READ = IO_BEGIN,
IO_WRITE,
NUM_IO_OPS
};
enum OffsetType {
OFFSET_BEGIN = 0,
OFFSET_ZERO = OFFSET_BEGIN,
OFFSET_LOW,
OFFSET_HIGH,
NUM_OFFSETS
};
static const char *offset_str[NUM_OFFSETS] = { "zero", "low", "high" };
typedef struct AHCIIOTestOptions {
enum BuffLen length;
enum AddrMode address_type;
enum IOMode io_type;
enum OffsetType offset;
} AHCIIOTestOptions;
static uint64_t offset_sector(enum OffsetType ofst,
enum AddrMode addr_type,
uint64_t buffsize)
{
uint64_t ceil;
uint64_t nsectors;
switch (ofst) {
case OFFSET_ZERO:
return 0;
case OFFSET_LOW:
return 1;
case OFFSET_HIGH:
ceil = (addr_type == ADDR_MODE_LBA28) ? 0xfffffff : 0xffffffffffff;
ceil = MIN(ceil, mb_to_sectors(test_image_size_mb) - 1);
nsectors = buffsize / AHCI_SECTOR_SIZE;
return ceil - nsectors + 1;
default:
g_assert_not_reached();
}
}
/**
* Table of possible I/O ATA commands given a set of enumerations.
*/
static const uint8_t io_cmds[NUM_MODES][NUM_ADDR_MODES][NUM_IO_OPS] = {
[MODE_PIO] = {
[ADDR_MODE_LBA28] = {
[IO_READ] = CMD_READ_PIO,
[IO_WRITE] = CMD_WRITE_PIO },
[ADDR_MODE_LBA48] = {
[IO_READ] = CMD_READ_PIO_EXT,
[IO_WRITE] = CMD_WRITE_PIO_EXT }
},
[MODE_DMA] = {
[ADDR_MODE_LBA28] = {
[IO_READ] = CMD_READ_DMA,
[IO_WRITE] = CMD_WRITE_DMA },
[ADDR_MODE_LBA48] = {
[IO_READ] = CMD_READ_DMA_EXT,
[IO_WRITE] = CMD_WRITE_DMA_EXT }
}
};
/**
* Test a Read/Write pattern using various commands, addressing modes,
* transfer modes, and buffer sizes.
*/
static void test_io_rw_interface(enum AddrMode lba48, enum IOMode dma,
unsigned bufsize, uint64_t sector)
{
AHCIQState *ahci;
ahci = ahci_boot_and_enable(NULL);
ahci_test_io_rw_simple(ahci, bufsize, sector,
io_cmds[dma][lba48][IO_READ],
io_cmds[dma][lba48][IO_WRITE]);
ahci_shutdown(ahci);
}
/**
* Demultiplex the test data and invoke the actual test routine.
*/
static void test_io_interface(gconstpointer opaque)
{
AHCIIOTestOptions *opts = (AHCIIOTestOptions *)opaque;
unsigned bufsize;
uint64_t sector;
switch (opts->length) {
case LEN_SIMPLE:
bufsize = 4096;
break;
case LEN_DOUBLE:
bufsize = 8192;
break;
case LEN_LONG:
bufsize = 4096 * 64;
break;
case LEN_SHORT:
bufsize = 512;
break;
default:
g_assert_not_reached();
}
sector = offset_sector(opts->offset, opts->address_type, bufsize);
test_io_rw_interface(opts->address_type, opts->io_type, bufsize, sector);
g_free(opts);
return;
}
static void create_ahci_io_test(enum IOMode type, enum AddrMode addr,
enum BuffLen len, enum OffsetType offset)
{
char *name;
AHCIIOTestOptions *opts;
opts = g_new(AHCIIOTestOptions, 1);
opts->length = len;
opts->address_type = addr;
opts->io_type = type;
opts->offset = offset;
name = g_strdup_printf("ahci/io/%s/%s/%s/%s",
io_mode_str[type],
addr_mode_str[addr],
buff_len_str[len],
offset_str[offset]);
if ((addr == ADDR_MODE_LBA48) && (offset == OFFSET_HIGH) &&
(mb_to_sectors(test_image_size_mb) <= 0xFFFFFFF)) {
g_test_message("%s: skipped; test image too small", name);
g_free(opts);
g_free(name);
return;
}
qtest_add_data_func(name, opts, test_io_interface);
g_free(name);
}
/******************************************************************************/
int main(int argc, char **argv)
{
const char *arch;
int ret;
int fd;
int c;
int i, j, k, m;
static struct option long_options[] = {
{"pedantic", no_argument, 0, 'p' },
{0, 0, 0, 0},
};
/* Should be first to utilize g_test functionality, So we can see errors. */
g_test_init(&argc, &argv, NULL);
while (1) {
c = getopt_long(argc, argv, "", long_options, NULL);
if (c == -1) {
break;
}
switch (c) {
case -1:
break;
case 'p':
ahci_pedantic = 1;
break;
default:
fprintf(stderr, "Unrecognized ahci_test option.\n");
g_assert_not_reached();
}
}
/* Check architecture */
arch = qtest_get_arch();
if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
g_test_message("Skipping test for non-x86");
return 0;
}
/* Create a temporary image */
fd = mkstemp(tmp_path);
g_assert(fd >= 0);
if (have_qemu_img()) {
imgfmt = "qcow2";
test_image_size_mb = TEST_IMAGE_SIZE_MB_LARGE;
mkqcow2(tmp_path, TEST_IMAGE_SIZE_MB_LARGE);
} else {
g_test_message("QTEST_QEMU_IMG not set or qemu-img missing; "
"skipping LBA48 high-sector tests");
imgfmt = "raw";
test_image_size_mb = TEST_IMAGE_SIZE_MB_SMALL;
ret = ftruncate(fd, test_image_size_mb * 1024 * 1024);
g_assert(ret == 0);
}
close(fd);
/* Create temporary blkdebug instructions */
fd = mkstemp(debug_path);
g_assert(fd >= 0);
close(fd);
/* Reserve a hollow file to use as a socket for migration tests */
fd = mkstemp(mig_socket);
g_assert(fd >= 0);
close(fd);
/* Run the tests */
qtest_add_func("/ahci/sanity", test_sanity);
qtest_add_func("/ahci/pci_spec", test_pci_spec);
qtest_add_func("/ahci/pci_enable", test_pci_enable);
qtest_add_func("/ahci/hba_spec", test_hba_spec);
qtest_add_func("/ahci/hba_enable", test_hba_enable);
qtest_add_func("/ahci/identify", test_identify);
for (i = MODE_BEGIN; i < NUM_MODES; i++) {
for (j = ADDR_MODE_BEGIN; j < NUM_ADDR_MODES; j++) {
for (k = LEN_BEGIN; k < NUM_LENGTHS; k++) {
for (m = OFFSET_BEGIN; m < NUM_OFFSETS; m++) {
create_ahci_io_test(i, j, k, m);
}
}
}
}
qtest_add_func("/ahci/io/dma/lba28/fragmented", test_dma_fragmented);
qtest_add_func("/ahci/flush/simple", test_flush);
qtest_add_func("/ahci/flush/retry", test_flush_retry);
qtest_add_func("/ahci/flush/migrate", test_flush_migrate);
qtest_add_func("/ahci/migrate/sanity", test_migrate_sanity);
qtest_add_func("/ahci/migrate/dma/simple", test_migrate_dma);
qtest_add_func("/ahci/io/dma/lba28/retry", test_halted_dma);
qtest_add_func("/ahci/migrate/dma/halted", test_migrate_halted_dma);
qtest_add_func("/ahci/max", test_max);
qtest_add_func("/ahci/reset", test_reset);
qtest_add_func("/ahci/io/ncq/simple", test_ncq_simple);
qtest_add_func("/ahci/migrate/ncq/simple", test_migrate_ncq);
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);
qtest_add_func("/ahci/cdrom/pio/bcl", test_atapi_bcl);
qtest_add_func("/ahci/cdrom/eject", test_atapi_tray);
ret = g_test_run();
/* Cleanup */
unlink(tmp_path);
unlink(debug_path);
unlink(mig_socket);
return ret;
}
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