diff options
Diffstat (limited to 'kernel/dynamic_rpc_dispatcher.c')
| -rw-r--r-- | kernel/dynamic_rpc_dispatcher.c | 462 |
1 files changed, 462 insertions, 0 deletions
diff --git a/kernel/dynamic_rpc_dispatcher.c b/kernel/dynamic_rpc_dispatcher.c new file mode 100644 index 0000000..fb9ca6b --- /dev/null +++ b/kernel/dynamic_rpc_dispatcher.c @@ -0,0 +1,462 @@ +/* + * Dynamic RPC Dispatcher - Version-aware RPC dispatch + * Uses discovered firmware addresses for native handlers, + * falls back to emulation for missing handlers + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/list.h> +#include <linux/errno.h> + +#include "dynamic_rpc_dispatcher.h" +#include "gsp_rpc_client.h" +#include "firmware_analyzer.h" + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Open-IOV"); +MODULE_DESCRIPTION("Dynamic RPC Dispatcher"); + +/* Version-specific interface */ +struct rpc_interface { + char version[32]; + struct fw_addresses fw_addrs; + + /* Function pointers for native firmware handlers */ + int (*alloc)(struct gsp_client *, u64, u64, u32, u32, u64, u32, u64 *, u64 *, u64 *); + int (*free)(struct gsp_client *, u64); + int (*map)(struct gsp_client *, u64, u64, u64, u32, u32, u64, u64 *); + int (*unmap)(struct gsp_client *, u64, u64, u64); + int (*pin)(struct gsp_client *, u64, u64, u64, u32, u64 *, u32 *); + int (*unpin)(struct gsp_client *, u64, u64, u64); + int (*schedule)(struct gsp_client *, u64, u64, u64, u32, u32); + int (*yield)(struct gsp_client *); + int (*bar_trap)(struct gsp_client *, u64, u32, u32, u64, u32, u64 *); + int (*migrate_save)(struct gsp_client *, u64, u64, u64, u64, u64 *); + int (*migrate_restore)(struct gsp_client *, u64, u64, u64, u64, u64); + int (*notify_register)(struct gsp_client *, u32, void (*)(struct gsp_client *, struct gsp_rpc_response *, void *), void *); + void (*notify_unregister)(struct gsp_client *, u32); + + /* Emulation fallbacks */ + bool use_emulation[GSP_RPC_MAX_TYPE]; +}; + +/* Dispatcher context */ +struct dynamic_dispatcher { + struct rpc_interface *current_interface; + struct fw_analysis_result fw_analysis; + spinlock_t lock; + bool initialized; +}; + +static struct dynamic_dispatcher g_dispatcher = { + .lock = __SPIN_LOCK_UNLOCKED(g_dispatcher.lock), + .initialized = false, +}; + +/* Version 570 interface (native firmware handlers) */ +static int rpc_570_alloc(struct gsp_client *client, u64 size, u64 alignment, u32 mem_type, + u32 flags, u64 addr_hint, u32 pid, u64 *gpu_va, u64 *handle, u64 *actual_size) +{ + return gsp_rpc_alloc(client, size, alignment, mem_type, flags, addr_hint, pid, gpu_va, handle, actual_size); +} + +static int rpc_570_free(struct gsp_client *client, u64 handle) +{ + return gsp_rpc_free(client, handle); +} + +static int rpc_570_map(struct gsp_client *client, u64 handle, u64 gpu_va, u64 size, + u32 prot, u32 flags, u64 offset, u64 *mapped_va) +{ + return gsp_rpc_map(client, handle, gpu_va, size, prot, flags, offset, mapped_va); +} + +static int rpc_570_unmap(struct gsp_client *client, u64 handle, u64 gpu_va, u64 size) +{ + return gsp_rpc_unmap(client, handle, gpu_va, size); +} + +static int rpc_570_pin(struct gsp_client *client, u64 handle, u64 offset, u64 size, + u32 flags, u64 *dma_addr, u32 *num_pages) +{ + return gsp_rpc_pin(client, handle, offset, size, flags, dma_addr, num_pages); +} + +static int rpc_570_unpin(struct gsp_client *client, u64 handle, u64 offset, u64 size) +{ + return gsp_rpc_unpin(client, handle, offset, size); +} + +static int rpc_570_schedule(struct gsp_client *client, u64 work_handle, u64 callback, u64 arg, + u32 priority, u32 flags) +{ + return gsp_rpc_schedule(client, work_handle, callback, arg, priority, flags); +} + +static int rpc_570_yield(struct gsp_client *client) +{ + return gsp_rpc_yield(client); +} + +static int rpc_570_bar_trap(struct gsp_client *client, u64 bar_addr, u32 access_type, u32 size, + u64 value, u32 bar_num, u64 *ret_value) +{ + return gsp_rpc_bar_trap(client, bar_addr, access_type, size, value, bar_num, ret_value); +} + +static int rpc_570_migrate_save(struct gsp_client *client, u64 src_gpu_id, u64 dst_gpu_id, + u64 memory_bitmap, u64 page_table_ptr, u64 *checkpoint) +{ + return gsp_rpc_migrate_save(client, src_gpu_id, dst_gpu_id, memory_bitmap, page_table_ptr, checkpoint); +} + +static int rpc_570_migrate_restore(struct gsp_client *client, u64 src_gpu_id, u64 dst_gpu_id, + u64 memory_bitmap, u64 page_table_ptr, u64 checkpoint) +{ + return gsp_rpc_migrate_restore(client, src_gpu_id, dst_gpu_id, memory_bitmap, page_table_ptr, checkpoint); +} + +static int rpc_570_notify_register(struct gsp_client *client, u32 type, + void (*callback)(struct gsp_client *, struct gsp_rpc_response *, void *), + void *ctx) +{ + return gsp_rpc_notify_register(client, type, callback, ctx); +} + +static void rpc_570_notify_unregister(struct gsp_client *client, u32 type) +{ + gsp_rpc_notify_unregister(client, type); +} + +static struct rpc_interface interface_570 = { + .version = "570.144W", + .alloc = rpc_570_alloc, + .free = rpc_570_free, + .map = rpc_570_map, + .unmap = rpc_570_unmap, + .pin = rpc_570_pin, + .unpin = rpc_570_unpin, + .schedule = rpc_570_schedule, + .yield = rpc_570_yield, + .bar_trap = rpc_570_bar_trap, + .migrate_save = rpc_570_migrate_save, + .migrate_restore = rpc_570_migrate_restore, + .notify_register = rpc_570_notify_register, + .notify_unregister = rpc_570_notify_unregister, + .use_emulation = {0}, +}; + +/* Emulation interface (fallback) */ +static int rpc_emu_alloc(struct gsp_client *client, u64 size, u64 alignment, u32 mem_type, + u32 flags, u64 addr_hint, u32 pid, u64 *gpu_va, u64 *handle, u64 *actual_size) +{ + return gsp_rpc_alloc_emul(client, size, alignment, mem_type, flags, addr_hint, pid, gpu_va, handle, actual_size); +} + +static int rpc_emu_free(struct gsp_client *client, u64 handle) +{ + return gsp_rpc_free_emul(client, handle); +} + +static int rpc_emu_map(struct gsp_client *client, u64 handle, u64 gpu_va, u64 size, + u32 prot, u32 flags, u64 offset, u64 *mapped_va) +{ + return gsp_rpc_map_emul(client, handle, gpu_va, size, prot, flags, offset, mapped_va); +} + +static int rpc_emu_unmap(struct gsp_client *client, u64 handle, u64 gpu_va, u64 size) +{ + return gsp_rpc_unmap_emul(client, handle, gpu_va, size); +} + +static int rpc_emu_pin(struct gsp_client *client, u64 handle, u64 offset, u64 size, + u32 flags, u64 *dma_addr, u32 *num_pages) +{ + return gsp_rpc_pin_emul(client, handle, offset, size, flags, dma_addr, num_pages); +} + +static int rpc_emu_unpin(struct gsp_client *client, u64 handle, u64 offset, u64 size) +{ + return gsp_rpc_unpin_emul(client, handle, offset, size); +} + +static int rpc_emu_schedule(struct gsp_client *client, u64 work_handle, u64 callback, u64 arg, + u32 priority, u32 flags) +{ + return 0; /* Emulation always succeeds */ +} + +static int rpc_emu_yield(struct gsp_client *client) +{ + return 0; +} + +static int rpc_emu_bar_trap(struct gsp_client *client, u64 bar_addr, u32 access_type, u32 size, + u64 value, u32 bar_num, u64 *ret_value) +{ + return gsp_rpc_bar_trap(client, bar_addr, access_type, size, value, bar_num, ret_value); +} + +static int rpc_emu_migrate_save(struct gsp_client *client, u64 src_gpu_id, u64 dst_gpu_id, + u64 memory_bitmap, u64 page_table_ptr, u64 *checkpoint) +{ + return 0; +} + +static int rpc_emu_migrate_restore(struct gsp_client *client, u64 src_gpu_id, u64 dst_gpu_id, + u64 memory_bitmap, u64 page_table_ptr, u64 checkpoint) +{ + return 0; +} + +static int rpc_emu_notify_register(struct gsp_client *client, u32 type, + void (*callback)(struct gsp_client *, struct gsp_rpc_response *, void *), + void *ctx) +{ + return gsp_rpc_notify_register(client, type, callback, ctx); +} + +static void rpc_emu_notify_unregister(struct gsp_client *client, u32 type) +{ + gsp_rpc_notify_unregister(client, type); +} + +static struct rpc_interface interface_emu = { + .version = "emulation", + .alloc = rpc_emu_alloc, + .free = rpc_emu_free, + .map = rpc_emu_map, + .unmap = rpc_emu_unmap, + .pin = rpc_emu_pin, + .unpin = rpc_emu_unpin, + .schedule = rpc_emu_schedule, + .yield = rpc_emu_yield, + .bar_trap = rpc_emu_bar_trap, + .migrate_save = rpc_emu_migrate_save, + .migrate_restore = rpc_emu_migrate_restore, + .notify_register = rpc_emu_notify_register, + .notify_unregister = rpc_emu_notify_unregister, + .use_emulation = {1}, +}; + +int dynamic_dispatcher_init(const char *fw_path) +{ + struct fw_analysis_result result; + int ret; + + spin_lock(&g_dispatcher.lock); + + if (g_dispatcher.initialized) { + spin_unlock(&g_dispatcher.lock); + return 0; + } + + /* Analyze firmware */ + ret = fw_analyzer_load_and_analyze(fw_path, &result); + if (ret) { + pr_warn("DYN_DISPATCH: Firmware analysis failed, using emulation: %d\n", ret); + g_dispatcher.current_interface = &interface_emu; + g_dispatcher.initialized = true; + spin_unlock(&g_dispatcher.lock); + return 0; + } + + g_dispatcher.fw_analysis = result; + + /* Select interface based on firmware version */ + if (result.matched && strcmp(result.version, "570.144W") == 0) { + interface_570.fw_addrs = result.addresses; + g_dispatcher.current_interface = &interface_570; + pr_info("DYN_DISPATCH: Using native 570.144W interface\n"); + } else { + g_dispatcher.current_interface = &interface_emu; + pr_info("DYN_DISPATCH: Using emulation interface (version: %s)\n", result.version); + } + + g_dispatcher.initialized = true; + spin_unlock(&g_dispatcher.lock); + + fw_analyzer_print_result(&result); + return 0; +} + +void dynamic_dispatcher_fini(void) +{ + spin_lock(&g_dispatcher.lock); + g_dispatcher.initialized = false; + g_dispatcher.current_interface = NULL; + spin_unlock(&g_dispatcher.lock); +} + +struct rpc_interface *dynamic_dispatcher_get_interface(void) +{ + struct rpc_interface *iface; + + spin_lock(&g_dispatcher.lock); + iface = g_dispatcher.current_interface; + spin_unlock(&g_dispatcher.lock); + + return iface; +} + +bool dynamic_dispatcher_use_emulation(enum gsp_rpc_type type) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface) + return true; + + if (type >= GSP_RPC_MAX_TYPE) + return true; + + return iface->use_emulation[type]; +} + +int dynamic_dispatcher_alloc(struct gsp_client *client, u64 size, u64 alignment, u32 mem_type, + u32 flags, u64 addr_hint, u32 pid, u64 *gpu_va, u64 *handle, u64 *actual_size) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->alloc) + return -ENODEV; + return iface->alloc(client, size, alignment, mem_type, flags, addr_hint, pid, gpu_va, handle, actual_size); +} + +int dynamic_dispatcher_free(struct gsp_client *client, u64 handle) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->free) + return -ENODEV; + return iface->free(client, handle); +} + +int dynamic_dispatcher_map(struct gsp_client *client, u64 handle, u64 gpu_va, u64 size, + u32 prot, u32 flags, u64 offset, u64 *mapped_va) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->map) + return -ENODEV; + return iface->map(client, handle, gpu_va, size, prot, flags, offset, mapped_va); +} + +int dynamic_dispatcher_unmap(struct gsp_client *client, u64 handle, u64 gpu_va, u64 size) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->unmap) + return -ENODEV; + return iface->unmap(client, handle, gpu_va, size); +} + +int dynamic_dispatcher_pin(struct gsp_client *client, u64 handle, u64 offset, u64 size, + u32 flags, u64 *dma_addr, u32 *num_pages) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->pin) + return -ENODEV; + return iface->pin(client, handle, offset, size, flags, dma_addr, num_pages); +} + +int dynamic_dispatcher_unpin(struct gsp_client *client, u64 handle, u64 offset, u64 size) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->unpin) + return -ENODEV; + return iface->unpin(client, handle, offset, size); +} + +int dynamic_dispatcher_schedule(struct gsp_client *client, u64 work_handle, u64 callback, u64 arg, + u32 priority, u32 flags) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->schedule) + return -ENODEV; + return iface->schedule(client, work_handle, callback, arg, priority, flags); +} + +int dynamic_dispatcher_yield(struct gsp_client *client) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->yield) + return -ENODEV; + return iface->yield(client); +} + +int dynamic_dispatcher_bar_trap(struct gsp_client *client, u64 bar_addr, u32 access_type, u32 size, + u64 value, u32 bar_num, u64 *ret_value) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->bar_trap) + return -ENODEV; + return iface->bar_trap(client, bar_addr, access_type, size, value, bar_num, ret_value); +} + +int dynamic_dispatcher_migrate_save(struct gsp_client *client, u64 src_gpu_id, u64 dst_gpu_id, + u64 memory_bitmap, u64 page_table_ptr, u64 *checkpoint) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->migrate_save) + return -ENODEV; + return iface->migrate_save(client, src_gpu_id, dst_gpu_id, memory_bitmap, page_table_ptr, checkpoint); +} + +int dynamic_dispatcher_migrate_restore(struct gsp_client *client, u64 src_gpu_id, u64 dst_gpu_id, + u64 memory_bitmap, u64 page_table_ptr, u64 checkpoint) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->migrate_restore) + return -ENODEV; + return iface->migrate_restore(client, src_gpu_id, dst_gpu_id, memory_bitmap, page_table_ptr, checkpoint); +} + +int dynamic_dispatcher_notify_register(struct gsp_client *client, u32 type, + void (*callback)(struct gsp_client *, struct gsp_rpc_response *, void *), + void *ctx) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (!iface || !iface->notify_register) + return -ENODEV; + return iface->notify_register(client, type, callback, ctx); +} + +void dynamic_dispatcher_notify_unregister(struct gsp_client *client, u32 type) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + if (iface && iface->notify_unregister) + iface->notify_unregister(client, type); +} + +const char *dynamic_dispatcher_get_version(void) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + return iface ? iface->version : "unknown"; +} + +const struct fw_addresses *dynamic_dispatcher_get_fw_addresses(void) +{ + struct rpc_interface *iface = dynamic_dispatcher_get_interface(); + return iface ? &iface->fw_addrs : NULL; +} + +EXPORT_SYMBOL_GPL(dynamic_dispatcher_init); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_fini); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_get_interface); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_use_emulation); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_alloc); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_free); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_map); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_unmap); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_pin); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_unpin); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_schedule); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_yield); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_bar_trap); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_migrate_save); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_migrate_restore); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_notify_register); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_notify_unregister); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_get_version); +EXPORT_SYMBOL_GPL(dynamic_dispatcher_get_fw_addresses); + +MODULE_DESCRIPTION("Dynamic RPC Dispatcher"); +MODULE_LICENSE("GPL");
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