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qemu/tests/ahci-test.c
David Gibson e7c8526b2a tests: Don't assume structure of PCI IO base in ahci-test 
In a couple of places ahci-test makes assumptions about how the tokens
returned from qpci_iomap() are formatted in ways it probably shouldn't.

First in verify_state() it uses a non-NULL token to indicate that the AHCI
device has been enabled (part of enabling is to iomap()).  This changes it
to use an explicit 'enabled' flag instead.

Second, it uses the fact that the token contains a PCI address, stored when
the BAR is mapped during initialization to check that the BAR has the same
value after a migration.  This changes it to explicitly read the BAR
register before and after the migration and compare.

Together, these changes will  make the test more robust against changes to
the internals of the libqos PCI layer.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
2016-10-28 09:38:27 +11:00

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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 "libqtest.h"
#include "libqos/libqos-pc.h"
#include "libqos/ahci.h"
#include "libqos/pci-pc.h"
#include "qemu-common.h"
#include "qemu/host-utils.h"
#include "hw/pci/pci_ids.h"
#include "hw/pci/pci_regs.h"
/* 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_malloc0(sizeof(AHCIQState));
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->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,serial=%s"
",format=%s"
" -M q35 "
"-device ide-hd,drive=drive0 "
"-global ide-hd.ver=%s";
s = ahci_boot(cli, tmp_path, "testdisk", imgfmt, "version");
}
return s;
}
/**
* Clean up the PCI device, then terminate the QEMU instance.
*/
static void ahci_shutdown(AHCIQState *ahci)
{
QOSState *qs = ahci->parent;
set_context(qs);
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);
bufwrite(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);
qmemset(ptr, 0x00, bufsize);
ahci_guest_io(ahci, port, read_cmd, ptr, bufsize, sector);
/*** Read back the Data ***/
bufread(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);
memread(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);
bufwrite(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 */
bufread(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 1024 -M q35 "
"-drive if=ide,file=%s,format=%s ", tmp_path, imgfmt);
dst = ahci_boot("-m 1024 -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 1024 -M q35 "
"-drive if=ide,format=%s,file=%s ",
imgfmt, tmp_path);
dst = ahci_boot("-m 1024 -M q35 "
"-drive if=ide,format=%s,file=%s "
"-incoming %s", imgfmt, tmp_path, uri);
set_context(src->parent);
/* 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);
memwrite(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);
set_context(src->parent);
/* 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);
memwrite(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;
const char *s;
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);
set_context(src->parent);
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);
qmp_eventwait("STOP");
/* Migrate over */
ahci_migrate(src, dst, uri);
/* Complete the command */
s = "{'execute':'cont' }";
qmp_async(s);
qmp_eventwait("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(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 */
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_malloc(sizeof(AHCIIOTestOptions));
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(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);
ret = g_test_run();
/* Cleanup */
unlink(tmp_path);
unlink(debug_path);
unlink(mig_socket);
return ret;
}
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