diff options
Diffstat (limited to 'tests/qtest/pnv-xive2-nvpg_bar.c')
| -rw-r--r-- | tests/qtest/pnv-xive2-nvpg_bar.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/tests/qtest/pnv-xive2-nvpg_bar.c b/tests/qtest/pnv-xive2-nvpg_bar.c new file mode 100644 index 0000000000..6ac8d36c82 --- /dev/null +++ b/tests/qtest/pnv-xive2-nvpg_bar.c @@ -0,0 +1,152 @@ +/* + * QTest testcase for PowerNV 10 interrupt controller (xive2) + * - Test NVPG BAR MMIO operations + * + * Copyright (c) 2024, IBM Corporation. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include "qemu/osdep.h" +#include "libqtest.h" + +#include "pnv-xive2-common.h" + +#define NVPG_BACKLOG_OP_SHIFT 10 +#define NVPG_BACKLOG_PRIO_SHIFT 4 + +#define XIVE_PRIORITY_MAX 7 + +enum NVx { + NVP, + NVG, + NVC +}; + +typedef enum { + INCR_STORE = 0b100, + INCR_LOAD = 0b000, + DECR_STORE = 0b101, + DECR_LOAD = 0b001, + READ_x = 0b010, + READ_y = 0b011, +} backlog_op; + +static uint32_t nvpg_backlog_op(QTestState *qts, backlog_op op, + enum NVx type, uint64_t index, + uint8_t priority, uint8_t delta) +{ + uint64_t addr, offset; + uint32_t count = 0; + + switch (type) { + case NVP: + addr = XIVE_NVPG_ADDR + (index << (XIVE_PAGE_SHIFT + 1)); + break; + case NVG: + addr = XIVE_NVPG_ADDR + (index << (XIVE_PAGE_SHIFT + 1)) + + (1 << XIVE_PAGE_SHIFT); + break; + case NVC: + addr = XIVE_NVC_ADDR + (index << XIVE_PAGE_SHIFT); + break; + default: + g_assert_not_reached(); + } + + offset = (op & 0b11) << NVPG_BACKLOG_OP_SHIFT; + offset |= priority << NVPG_BACKLOG_PRIO_SHIFT; + if (op >> 2) { + qtest_writeb(qts, addr + offset, delta); + } else { + count = qtest_readw(qts, addr + offset); + } + return count; +} + +void test_nvpg_bar(QTestState *qts) +{ + uint32_t nvp_target = 0x11; + uint32_t group_target = 0x17; /* size 16 */ + uint32_t vp_irq = 33, group_irq = 47; + uint32_t vp_end = 3, group_end = 97; + uint32_t vp_irq_data = 0x33333333; + uint32_t group_irq_data = 0x66666666; + uint8_t vp_priority = 0, group_priority = 5; + uint32_t vp_count[XIVE_PRIORITY_MAX + 1] = { 0 }; + uint32_t group_count[XIVE_PRIORITY_MAX + 1] = { 0 }; + uint32_t count, delta; + uint8_t i; + + g_test_message("========================================================="); + g_test_message("Testing NVPG BAR operations"); + + set_nvg(qts, group_target, 0); + set_nvp(qts, nvp_target, 0x04); + set_nvp(qts, group_target, 0x04); + + /* + * Setup: trigger a VP-specific interrupt and a group interrupt + * so that the backlog counters are initialized to something else + * than 0 for at least one priority level + */ + set_eas(qts, vp_irq, vp_end, vp_irq_data); + set_end(qts, vp_end, nvp_target, vp_priority, false /* group */); + + set_eas(qts, group_irq, group_end, group_irq_data); + set_end(qts, group_end, group_target, group_priority, true /* group */); + + get_esb(qts, vp_irq, XIVE_EOI_PAGE, XIVE_ESB_SET_PQ_00); + set_esb(qts, vp_irq, XIVE_TRIGGER_PAGE, 0, 0); + vp_count[vp_priority]++; + + get_esb(qts, group_irq, XIVE_EOI_PAGE, XIVE_ESB_SET_PQ_00); + set_esb(qts, group_irq, XIVE_TRIGGER_PAGE, 0, 0); + group_count[group_priority]++; + + /* check the initial counters */ + for (i = 0; i <= XIVE_PRIORITY_MAX; i++) { + count = nvpg_backlog_op(qts, READ_x, NVP, nvp_target, i, 0); + g_assert_cmpuint(count, ==, vp_count[i]); + + count = nvpg_backlog_op(qts, READ_y, NVG, group_target, i, 0); + g_assert_cmpuint(count, ==, group_count[i]); + } + + /* do a few ops on the VP. Counter can only be 0 and 1 */ + vp_priority = 2; + delta = 7; + nvpg_backlog_op(qts, INCR_STORE, NVP, nvp_target, vp_priority, delta); + vp_count[vp_priority] = 1; + count = nvpg_backlog_op(qts, INCR_LOAD, NVP, nvp_target, vp_priority, 0); + g_assert_cmpuint(count, ==, vp_count[vp_priority]); + count = nvpg_backlog_op(qts, READ_y, NVP, nvp_target, vp_priority, 0); + g_assert_cmpuint(count, ==, vp_count[vp_priority]); + + count = nvpg_backlog_op(qts, DECR_LOAD, NVP, nvp_target, vp_priority, 0); + g_assert_cmpuint(count, ==, vp_count[vp_priority]); + vp_count[vp_priority] = 0; + nvpg_backlog_op(qts, DECR_STORE, NVP, nvp_target, vp_priority, delta); + count = nvpg_backlog_op(qts, READ_x, NVP, nvp_target, vp_priority, 0); + g_assert_cmpuint(count, ==, vp_count[vp_priority]); + + /* do a few ops on the group */ + group_priority = 2; + delta = 9; + /* can't go negative */ + nvpg_backlog_op(qts, DECR_STORE, NVG, group_target, group_priority, delta); + count = nvpg_backlog_op(qts, READ_y, NVG, group_target, group_priority, 0); + g_assert_cmpuint(count, ==, 0); + nvpg_backlog_op(qts, INCR_STORE, NVG, group_target, group_priority, delta); + group_count[group_priority] += delta; + count = nvpg_backlog_op(qts, INCR_LOAD, NVG, group_target, + group_priority, delta); + g_assert_cmpuint(count, ==, group_count[group_priority]); + group_count[group_priority]++; + + count = nvpg_backlog_op(qts, DECR_LOAD, NVG, group_target, + group_priority, delta); + g_assert_cmpuint(count, ==, group_count[group_priority]); + group_count[group_priority]--; + count = nvpg_backlog_op(qts, READ_x, NVG, group_target, group_priority, 0); + g_assert_cmpuint(count, ==, group_count[group_priority]); +} |