tests/qtest/sdhci-test.c

   1 /*
   2  * QTest testcase for SDHCI controllers
   3  *
   4  * Written by Philippe Mathieu-Daudé <f4bug@amsat.org>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include "hw/registerfields.h"
  13 #include "libqos/libqtest.h"
  14 #include "qemu/module.h"
  15 #include "libqos/pci-pc.h"
  16 #include "hw/pci/pci.h"
  17 #include "libqos/qgraph.h"
  18 #include "libqos/sdhci.h"
  19
  20 #define SDHC_CAPAB                      0x40
  21 FIELD(SDHC_CAPAB, BASECLKFREQ,               8, 8); /* since v2 */
  22 FIELD(SDHC_CAPAB, SDMA,                     22, 1);
  23 FIELD(SDHC_CAPAB, SDR,                      32, 3); /* since v3 */
  24 FIELD(SDHC_CAPAB, DRIVER,                   36, 3); /* since v3 */
  25 #define SDHC_HCVER                      0xFE
  26
  27 static void check_specs_version(QSDHCI *s, uint8_t version)
  28 {
  29     uint32_t v;
  30
  31     v = s->readw(s, SDHC_HCVER);
  32     v &= 0xff;
  33     v += 1;
  34     g_assert_cmpuint(v, ==, version);
  35 }
  36
  37 static void check_capab_capareg(QSDHCI *s, uint64_t expec_capab)
  38 {
  39     uint64_t capab;
  40
  41     capab = s->readq(s, SDHC_CAPAB);
  42     g_assert_cmphex(capab, ==, expec_capab);
  43 }
  44
  45 static void check_capab_readonly(QSDHCI *s)
  46 {
  47     const uint64_t vrand = 0x123456789abcdef;
  48     uint64_t capab0, capab1;
  49
  50     capab0 = s->readq(s, SDHC_CAPAB);
  51     g_assert_cmpuint(capab0, !=, vrand);
  52
  53     s->writeq(s, SDHC_CAPAB, vrand);
  54     capab1 = s->readq(s, SDHC_CAPAB);
  55     g_assert_cmpuint(capab1, !=, vrand);
  56     g_assert_cmpuint(capab1, ==, capab0);
  57 }
  58
  59 static void check_capab_baseclock(QSDHCI *s, uint8_t expec_freq)
  60 {
  61     uint64_t capab, capab_freq;
  62
  63     if (!expec_freq) {
  64         return;
  65     }
  66     capab = s->readq(s, SDHC_CAPAB);
  67     capab_freq = FIELD_EX64(capab, SDHC_CAPAB, BASECLKFREQ);
  68     g_assert_cmpuint(capab_freq, ==, expec_freq);
  69 }
  70
  71 static void check_capab_sdma(QSDHCI *s, bool supported)
  72 {
  73     uint64_t capab, capab_sdma;
  74
  75     capab = s->readq(s, SDHC_CAPAB);
  76     capab_sdma = FIELD_EX64(capab, SDHC_CAPAB, SDMA);
  77     g_assert_cmpuint(capab_sdma, ==, supported);
  78 }
  79
  80 static void check_capab_v3(QSDHCI *s, uint8_t version)
  81 {
  82     uint64_t capab, capab_v3;
  83
  84     if (version < 3) {
  85         /* before v3 those fields are RESERVED */
  86         capab = s->readq(s, SDHC_CAPAB);
  87         capab_v3 = FIELD_EX64(capab, SDHC_CAPAB, SDR);
  88         g_assert_cmpuint(capab_v3, ==, 0);
  89         capab_v3 = FIELD_EX64(capab, SDHC_CAPAB, DRIVER);
  90         g_assert_cmpuint(capab_v3, ==, 0);
  91     }
  92 }
  93
  94 static void test_registers(void *obj, void *data, QGuestAllocator *alloc)
  95 {
  96     QSDHCI *s = obj;
  97
  98     check_specs_version(s, s->props.version);
  99     check_capab_capareg(s, s->props.capab.reg);
 100     check_capab_readonly(s);
 101     check_capab_v3(s, s->props.version);
 102     check_capab_sdma(s, s->props.capab.sdma);
 103     check_capab_baseclock(s, s->props.baseclock);
 104 }
 105
 106 static void register_sdhci_test(void)
 107 {
 108     qos_add_test("registers", "sdhci", test_registers, NULL);
 109 }
 110
 111 libqos_init(register_sdhci_test);