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-rw-r--r--kernel/tests/gsp_vgpu_mock_test.c624
1 files changed, 0 insertions, 624 deletions
diff --git a/kernel/tests/gsp_vgpu_mock_test.c b/kernel/tests/gsp_vgpu_mock_test.c
deleted file mode 100644
index b9a46df..0000000
--- a/kernel/tests/gsp_vgpu_mock_test.c
+++ /dev/null
@@ -1,624 +0,0 @@
-/*
- * GSP vGPU-IO Driver Mock Test
- * Tests driver logic with mocked hardware interfaces
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/mutex.h>
-#include <linux/list.h>
-#include <linux/idr.h>
-#include <linux/kref.h>
-#include <linux/completion.h>
-#include <linux/atomic.h>
-
-#define TEST_PASS 0
-#define TEST_FAIL -1
-
-static int test_count = 0;
-static int pass_count = 0;
-static int fail_count = 0;
-
-#define TEST_ASSERT(cond, msg) \
- do { \
- test_count++; \
- if (cond) { \
- pass_count++; \
- pr_info("PASS: %s\n", msg); \
- } else { \
- fail_count++; \
- pr_err("FAIL: %s\n", msg); \
- } \
- } while (0)
-
-#define TEST_ASSERT_EQ(a, b, msg) \
- TEST_ASSERT((a) == (b), msg " (expected " #b ", got " #a ")")
-
-/* ============================================================
- * Mock Hardware Abstraction
- * ============================================================ */
-
-struct mock_hw {
- u64 bar0_regs[256];
- u64 bar1_regs[256];
- u8 *fw_memory;
- size_t fw_size;
- bool doorbell_triggered;
- u32 doorbell_count;
- spinlock_t lock;
-};
-
-static struct mock_hw *mock_hw_create(void)
-{
- struct mock_hw *hw = kzalloc(sizeof(*hw), GFP_KERNEL);
- if (!hw)
- return NULL;
-
- hw->fw_memory = vmalloc(32 * 1024 * 1024); // 32MB
- if (!hw->fw_memory) {
- kfree(hw);
- return NULL;
- }
- hw->fw_size = 32 * 1024 * 1024;
- spin_lock_init(&hw->lock);
- return hw;
-}
-
-static void mock_hw_destroy(struct mock_hw *hw)
-{
- if (!hw)
- return;
- vfree(hw->fw_memory);
- kfree(hw);
-}
-
-static void mock_hw_write_bar0(struct mock_hw *hw, u32 offset, u32 value)
-{
- unsigned long flags;
- spin_lock_irqsave(&hw->lock, flags);
- if (offset / 4 < 256)
- hw->bar0_regs[offset / 4] = value;
- if (offset == 0x1000) { // Doorbell
- hw->doorbell_triggered = true;
- hw->doorbell_count++;
- }
- spin_unlock_irqrestore(&hw->lock, flags);
-}
-
-static u32 mock_hw_read_bar0(struct mock_hw *hw, u32 offset)
-{
- unsigned long flags;
- u32 value = 0;
- spin_lock_irqsave(&hw->lock, flags);
- if (offset / 4 < 256)
- value = hw->bar0_regs[offset / 4];
- spin_unlock_irqrestore(&hw->lock, flags);
- return value;
-}
-
-static void mock_hw_write_bar1(struct mock_hw *hw, u64 offset, u64 value)
-{
- unsigned long flags;
- spin_lock_irqsave(&hw->lock, flags);
- if (offset < hw->fw_size)
- *(u64 *)(hw->fw_memory + offset) = value;
- spin_unlock_irqrestore(&hw->lock, flags);
-}
-
-static u64 mock_hw_read_bar1(struct mock_hw *hw, u64 offset)
-{
- unsigned long flags;
- u64 value = 0;
- spin_lock_irqsave(&hw->lock, flags);
- if (offset < hw->fw_size)
- value = *(u64 *)(hw->fw_memory + offset);
- spin_unlock_irqrestore(&hw->lock, flags);
- return value;
-}
-
-/* ============================================================
- * Mock VF Operations
- * ============================================================ */
-
-struct mock_vf {
- u32 id;
- u64 bar1_offset;
- u64 bar1_size;
- u64 pt_base;
- u64 pt_size;
- u64 cmd_base;
- u64 cmd_size;
- bool active;
- struct {
- u64 aperture_offset;
- u64 aperture_size;
- bool force_access;
- u32 force_vf;
- } bar_state;
- struct list_head wpr_list;
- struct mutex lock;
-};
-
-struct mock_wpr_region {
- struct list_head list;
- u64 base;
- u64 size;
- u32 flags;
-};
-
-static struct mock_vf *mock_vf_create(u32 id, u64 bar1_offset, u64 bar1_size,
- u64 pt_base, u64 pt_size,
- u64 cmd_base, u64 cmd_size)
-{
- struct mock_vf *vf = kzalloc(sizeof(*vf), GFP_KERNEL);
- if (!vf)
- return NULL;
-
- vf->id = id;
- vf->bar1_offset = bar1_offset;
- vf->bar1_size = bar1_size;
- vf->pt_base = pt_base;
- vf->pt_size = pt_size;
- vf->cmd_base = cmd_base;
- vf->cmd_size = cmd_size;
- vf->active = true;
- INIT_LIST_HEAD(&vf->wpr_list);
- mutex_init(&vf->lock);
-
- vf->bar_state.aperture_offset = bar1_offset;
- vf->bar_state.aperture_size = bar1_size;
- vf->bar_state.force_access = false;
- vf->bar_state.force_vf = 0;
-
- return vf;
-}
-
-static void mock_vf_destroy(struct mock_vf *vf)
-{
- if (!vf)
- return;
-
- struct mock_wpr_region *rgn, *tmp;
- mutex_lock(&vf->lock);
- list_for_each_entry_safe(rgn, tmp, &vf->wpr_list, list) {
- list_del(&rgn->list);
- kfree(rgn);
- }
- mutex_unlock(&vf->lock);
-
- kfree(vf);
-}
-
-static int mock_vf_wpr_add(struct mock_vf *vf, u64 base, u64 size, u32 flags)
-{
- struct mock_wpr_region *rgn = kzalloc(sizeof(*rgn), GFP_KERNEL);
- if (!rgn)
- return -ENOMEM;
-
- rgn->base = base;
- rgn->size = size;
- rgn->flags = flags;
-
- mutex_lock(&vf->lock);
- list_add(&rgn->list, &vf->wpr_list);
- mutex_unlock(&vf->lock);
-
- return 0;
-}
-
-static int mock_vf_wpr_remove(struct mock_vf *vf, u64 base)
-{
- struct mock_wpr_region *rgn, *tmp;
- bool found = false;
-
- mutex_lock(&vf->lock);
- list_for_each_entry_safe(rgn, tmp, &vf->wpr_list, list) {
- if (rgn->base == base) {
- list_del(&rgn->list);
- kfree(rgn);
- found = true;
- break;
- }
- }
- mutex_unlock(&vf->lock);
-
- return found ? 0 : -ENOENT;
-}
-
-/* ============================================================
- * Mock RPC Client
- * ============================================================ */
-
-struct mock_rpc_client {
- u32 seq;
- u32 pending_seq[64];
- u32 pending_count;
- struct mutex lock;
-};
-
-static struct mock_rpc_client *mock_rpc_create(void)
-{
- struct mock_rpc_client *rpc = kzalloc(sizeof(*rpc), GFP_KERNEL);
- if (!rpc)
- return NULL;
- mutex_init(&rpc->lock);
- return rpc;
-}
-
-static void mock_rpc_destroy(struct mock_rpc_client *rpc)
-{
- if (!rpc)
- return;
- kfree(rpc);
-}
-
-static int mock_rpc_send(struct mock_rpc_client *rpc, u32 rpc_type,
- void *payload, size_t payload_size,
- void *response, size_t *response_size)
-{
- if (!rpc)
- return -EINVAL;
-
- mutex_lock(&rpc->lock);
- rpc->seq++;
- rpc->pending_seq[rpc->pending_count++] = rpc->seq;
- mutex_unlock(&rpc->lock);
-
- /* Simulate successful response */
- if (response && response_size) {
- struct gsp_rpc_response *resp = response;
- resp->status = 0;
- resp->rpc_type = rpc_type;
- resp->sequence = rpc->seq;
- *response_size = sizeof(*resp);
- }
-
- return 0;
-}
-
-/* ============================================================
- * Driver Logic Tests with Mocks
- * ============================================================ */
-
-static int test_mock_hardware(void)
-{
- struct mock_hw *hw = mock_hw_create();
- TEST_ASSERT(hw != NULL, "Mock HW create");
-
- /* Test BAR0 write/read */
- mock_hw_write_bar0(hw, 0x1000, 0x1);
- TEST_ASSERT(hw->doorbell_triggered, "Doorbell triggered");
- TEST_ASSERT_EQ(hw->doorbell_count, 1, "Doorbell count");
-
- u32 val = mock_hw_read_bar0(hw, 0x1000);
- TEST_ASSERT_EQ(val, 0x1, "BAR0 read back");
-
- /* Test BAR1 write/read */
- mock_hw_write_bar1(hw, 0x1000, 0xDEADBEEFCAFEBABE);
- u64 val64 = mock_hw_read_bar1(hw, 0x1000);
- TEST_ASSERT_EQ(val64, 0xDEADBEEFCAFEBABE, "BAR1 read back");
-
- mock_hw_destroy(hw);
- return TEST_PASS;
-}
-
-static int test_mock_vf_lifecycle(void)
-{
- struct mock_vf *vf = mock_vf_create(1, 0x10000000, 0x100000,
- 0x20000000, 0x100000,
- 0x30000000, 0x10000);
- TEST_ASSERT(vf != NULL, "Mock VF create");
-
- TEST_ASSERT(vf->active, "VF active after create");
- TEST_ASSERT_EQ(vf->id, 1, "VF ID");
- TEST_ASSERT_EQ(vf->bar1_offset, 0x10000000, "BAR1 offset");
- TEST_ASSERT_EQ(vf->bar1_size, 0x100000, "BAR1 size");
- TEST_ASSERT_EQ(vf->pt_base, 0x20000000, "Page table base");
- TEST_ASSERT_EQ(vf->pt_size, 0x100000, "Page table size");
-
- /* Test BAR state */
- TEST_ASSERT_EQ(vf->bar_state.aperture_offset, 0x10000000, "Aperture offset");
- TEST_ASSERT_EQ(vf->bar_state.aperture_size, 0x100000, "Aperture size");
- TEST_ASSERT(!vf->bar_state.force_access, "Force access initially false");
-
- /* Test WPR list empty */
- TEST_ASSERT(list_empty(&vf->wpr_list), "WPR list empty initially");
-
- mock_vf_destroy(vf);
- return TEST_PASS;
-}
-
-static int test_mock_vf_wpr(void)
-{
- struct mock_vf *vf = mock_vf_create(1, 0x10000000, 0x100000,
- 0x20000000, 0x100000,
- 0x30000000, 0x10000);
- TEST_ASSERT(vf != NULL, "Mock VF create");
-
- /* Add WPR region */
- int ret = mock_vf_wpr_add(vf, 0x10000000, 0x10000, 3);
- TEST_ASSERT_EQ(ret, 0, "WPR add");
-
- ret = mock_vf_wpr_add(vf, 0x20000000, 0x20000, 1);
- TEST_ASSERT_EQ(ret, 0, "WPR add second");
-
- /* Verify list */
- int count = 0;
- struct mock_wpr_region *rgn;
- mutex_lock(&vf->lock);
- list_for_each_entry(rgn, &vf->wpr_list, list) {
- count++;
- }
- mutex_unlock(&vf->lock);
- TEST_ASSERT_EQ(count, 2, "Two WPR regions");
-
- /* Remove one */
- ret = mock_vf_wpr_remove(vf, 0x10000000);
- TEST_ASSERT_EQ(ret, 0, "WPR remove");
-
- count = 0;
- mutex_lock(&vf->lock);
- list_for_each_entry(rgn, &vf->wpr_list, list) {
- count++;
- }
- mutex_unlock(&vf->lock);
- TEST_ASSERT_EQ(count, 1, "One WPR region remaining");
-
- /* Remove non-existent */
- ret = mock_vf_wpr_remove(vf, 0x30000000);
- TEST_ASSERT_EQ(ret, -ENOENT, "WPR remove non-existent returns ENOENT");
-
- mock_vf_destroy(vf);
- return TEST_PASS;
-}
-
-static int test_mock_rpc_client(void)
-{
- struct mock_rpc_client *rpc = mock_rpc_create();
- TEST_ASSERT(rpc != NULL, "Mock RPC create");
-
- struct gsp_rpc_response resp;
- size_t resp_size = sizeof(resp);
- struct gsp_alloc_payload payload = {
- .size = cpu_to_le64(0x100000),
- .type = cpu_to_le32(GSP_MEM_VRAM),
- };
-
- int ret = mock_rpc_send(rpc, GSP_RPC_ALLOC, &payload, sizeof(payload), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "RPC send");
-
- TEST_ASSERT_EQ(resp.status, 0, "RPC response status");
- TEST_ASSERT_EQ(resp.rpc_type, GSP_RPC_ALLOC, "RPC response type");
- TEST_ASSERT_EQ(resp.sequence, 1, "RPC response sequence");
-
- /* Second call */
- ret = mock_rpc_send(rpc, GSP_RPC_PIN, &payload, sizeof(payload), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "RPC send second");
- TEST_ASSERT_EQ(resp.sequence, 2, "RPC response sequence 2");
-
- mock_rpc_destroy(rpc);
- return TEST_PASS;
-}
-
-static int test_driver_vf_creation_logic(void)
-{
- /* Simulate driver VF creation logic */
- struct mock_hw *hw = mock_hw_create();
- struct mock_rpc_client *rpc = mock_rpc_create();
- struct mock_vf *vfs[8] = {0};
-
- /* Create VFs 1-4 */
- for (int i = 1; i <= 4; i++) {
- vfs[i] = mock_vf_create(i, 0x10000000 * i, 0x100000,
- 0x20000000 * i, 0x100000,
- 0x30000000 * i, 0x10000);
- TEST_ASSERT(vfs[i] != NULL, "VF creation in loop");
- TEST_ASSERT(vfs[i]->active, "VF active in loop");
- }
-
- /* Initialize BAR for each VF */
- for (int i = 1; i <= 4; i++) {
- vfs[i]->bar_state.aperture_offset = vfs[i]->bar1_offset;
- vfs[i]->bar_state.aperture_size = vfs[i]->bar1_size;
- TEST_ASSERT_EQ(vfs[i]->bar_state.aperture_offset, 0x10000000 * i, "VF BAR offset");
- TEST_ASSERT_EQ(vfs[i]->bar_state.aperture_size, 0x100000, "VF BAR size");
- }
-
- /* Add WPR for each VF */
- for (int i = 1; i <= 4; i++) {
- int ret = mock_vf_wpr_add(vfs[i], vfs[i]->pt_base, vfs[i]->pt_size, 3);
- TEST_ASSERT_EQ(ret, 0, "VF WPR add in loop");
- }
-
- /* Simulate RPC calls for each VF */
- for (int i = 1; i <= 4; i++) {
- struct gsp_rpc_response resp;
- size_t resp_size = sizeof(resp);
- struct gsp_alloc_payload payload = {
- .size = cpu_to_le64(0x100000),
- .type = cpu_to_le32(GSP_MEM_VRAM),
- .vf_id = cpu_to_le32(i),
- };
- int ret = mock_rpc_send(rpc, GSP_RPC_ALLOC, &payload, sizeof(payload), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "VF RPC alloc");
- TEST_ASSERT_EQ(resp.status, 0, "VF RPC response OK");
- }
-
- /* Cleanup */
- for (int i = 1; i <= 4; i++) {
- mock_vf_destroy(vfs[i]);
- }
- mock_rpc_destroy(rpc);
- mock_hw_destroy(hw);
-
- return TEST_PASS;
-}
-
-static int test_migration_progress_tracking(void)
-{
- struct {
- u64 pages_transferred;
- u64 bytes_transferred;
- u64 dirty_pages;
- u64 *page_list;
- u32 page_count;
- } progress = {0};
-
- progress.page_count = 1000;
- progress.page_list = kcalloc(progress.page_count, sizeof(u64), GFP_KERNEL);
- TEST_ASSERT(progress.page_list != NULL, "Progress page list alloc");
-
- /* Simulate transfer loop */
- for (int iter = 0; iter < 10; iter++) {
- progress.pages_transferred += 100;
- progress.bytes_transferred += 100 * 4096;
- progress.dirty_pages = 50 - (iter * 5);
-
- TEST_ASSERT(progress.pages_transferred <= 1000, "Pages not exceeded");
- TEST_ASSERT(progress.bytes_transferred <= 1000 * 4096, "Bytes not exceeded");
- }
-
- TEST_ASSERT_EQ(progress.pages_transferred, 1000, "Final pages");
- TEST_ASSERT_EQ(progress.bytes_transferred, 1000 * 4096, "Final bytes");
- TEST_ASSERT_EQ(progress.dirty_pages, 0, "Final dirty pages");
-
- kfree(progress.page_list);
- return TEST_PASS;
-}
-
-static int test_bar_state_machine(void)
-{
- struct {
- u64 aperture_offset;
- u64 aperture_size;
- bool force_access;
- u32 force_vf;
- } bar_state = {0};
-
- /* Initial state */
- bar_state.aperture_offset = 0x10000000;
- bar_state.aperture_size = 0x100000;
- TEST_ASSERT_EQ(bar_state.aperture_offset, 0x10000000, "Initial aperture offset");
- TEST_ASSERT(!bar_state.force_access, "Force access initially false");
-
- /* Enable force access */
- bar_state.force_access = true;
- bar_state.force_vf = 1;
- TEST_ASSERT(bar_state.force_access, "Force access enabled");
- TEST_ASSERT_EQ(bar_state.force_vf, 1, "Force VF set");
-
- /* Disable force access */
- bar_state.force_access = false;
- bar_state.force_vf = 0;
- TEST_ASSERT(!bar_state.force_access, "Force access disabled");
- TEST_ASSERT_EQ(bar_state.force_vf, 0, "Force VF cleared");
-
- return TEST_PASS;
-}
-
-static int test_concurrent_vf_operations(void)
-{
- struct mock_vf *vf1 = mock_vf_create(1, 0x10000000, 0x100000, 0x20000000, 0x100000, 0x30000000, 0x10000);
- struct mock_vf *vf2 = mock_vf_create(2, 0x20000000, 0x100000, 0x40000000, 0x100000, 0x60000000, 0x10000);
- struct mock_rpc_client *rpc = mock_rpc_create();
-
- TEST_ASSERT(vf1 && vf2 && rpc, "Create two VFs and RPC");
-
- /* Simulate concurrent operations */
- struct gsp_rpc_response resp;
- size_t resp_size = sizeof(resp);
-
- /* VF1 alloc */
- struct gsp_alloc_payload payload1 = {
- .size = cpu_to_le64(0x100000),
- .type = cpu_to_le32(GSP_MEM_VRAM),
- .vf_id = cpu_to_le32(1),
- };
- int ret = mock_rpc_send(rpc, GSP_RPC_ALLOC, &payload1, sizeof(payload1), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "VF1 alloc");
- TEST_ASSERT_EQ(resp.status, 0, "VF1 alloc response");
-
- /* VF2 alloc */
- struct gsp_alloc_payload payload2 = {
- .size = cpu_to_le64(0x200000),
- .type = cpu_to_le32(GSP_MEM_VRAM),
- .vf_id = cpu_to_le32(2),
- };
- ret = mock_rpc_send(rpc, GSP_RPC_ALLOC, &payload2, sizeof(payload2), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "VF2 alloc");
- TEST_ASSERT_EQ(resp.status, 0, "VF2 alloc response");
-
- /* VF1 pin */
- struct gsp_pin_payload pin_payload = {
- .handle = cpu_to_le64(0x1000),
- .vf_id = cpu_to_le32(1),
- };
- ret = mock_rpc_send(rpc, GSP_RPC_PIN, &pin_payload, sizeof(pin_payload), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "VF1 pin");
-
- /* VF2 BAR trap */
- struct gsp_bar_trap_payload bar_payload = {
- .vf_id = cpu_to_le32(2),
- .bar_index = cpu_to_le32(1),
- };
- ret = mock_rpc_send(rpc, GSP_RPC_BAR_TRAP, &bar_payload, sizeof(bar_payload), &resp, &resp_size);
- TEST_ASSERT_EQ(ret, 0, "VF2 BAR trap");
-
- /* Verify sequence numbers */
- TEST_ASSERT_EQ(resp.sequence, 4, "Sequence number 4");
-
- mock_vf_destroy(vf1);
- mock_vf_destroy(vf2);
- mock_rpc_destroy(rpc);
-
- return TEST_PASS;
-}
-
-/* ============================================================
- * Module Init/Exit
- * ============================================================ */
-
-static int __init gsp_mock_test_init(void)
-{
- pr_info("========================================\n");
- pr_info("GSP vGPU-IO Mock Driver Test Suite\n");
- pr_info("========================================\n");
-
- test_mock_hardware();
- test_mock_vf_lifecycle();
- test_mock_vf_wpr();
- test_mock_rpc_client();
- test_driver_vf_creation_logic();
- test_migration_progress_tracking();
- test_bar_state_machine();
- test_concurrent_vf_operations();
-
- pr_info("========================================\n");
- pr_info("Mock Test Results: %d total, %d passed, %d failed\n",
- test_count, pass_count, fail_count);
- pr_info("========================================\n");
-
- if (fail_count > 0) {
- pr_err("MOCK TEST SUITE FAILED\n");
- return -EINVAL;
- }
-
- pr_info("MOCK TEST SUITE PASSED\n");
- return 0;
-}
-
-static void __exit gsp_mock_test_exit(void)
-{
- pr_info("GSP vGPU-IO Mock Test Suite Exited\n");
-}
-
-module_init(gsp_mock_test_init);
-module_exit(gsp_mock_test_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Open-IOV Project");
-MODULE_DESCRIPTION("GSP vGPU-IO Mock Driver Test");
-MODULE_VERSION("1.0"); \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2026-10-12 23:27:07 +0000