1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
3 * Copyright 2016-2018 HabanaLabs, Ltd.
11 #include <linux/types.h>
12 #include <linux/ioctl.h>
15 * Defines that are asic-specific but constitutes as ABI between kernel driver
18 #define GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START 0x8000 /* 32KB */
23 * The external queues (DMA channels + CPU) MUST be before the internal queues
24 * and each group (DMA channels + CPU and internal) must be contiguous inside
25 * itself but there can be a gap between the two groups (although not
30 GOYA_QUEUE_ID_DMA_0 = 0,
48 /* Opcode for management ioctl */
49 #define HL_INFO_HW_IP_INFO 0
50 #define HL_INFO_HW_EVENTS 1
51 #define HL_INFO_DRAM_USAGE 2
52 #define HL_INFO_HW_IDLE 3
54 #define HL_INFO_VERSION_MAX_LEN 128
56 struct hl_info_hw_ip_info {
57 __u64 sram_base_address;
58 __u64 dram_base_address;
62 __u32 device_id; /* PCI Device ID */
64 __u32 armcp_cpld_version;
65 __u32 psoc_pci_pll_nr;
66 __u32 psoc_pci_pll_nf;
67 __u32 psoc_pci_pll_od;
68 __u32 psoc_pci_pll_div_factor;
69 __u8 tpc_enabled_mask;
72 __u8 armcp_version[HL_INFO_VERSION_MAX_LEN];
75 struct hl_info_dram_usage {
80 struct hl_info_hw_idle {
86 /* Location of relevant struct in userspace */
89 * The size of the return value. Just like "size" in "snprintf",
90 * it limits how many bytes the kernel can write
92 * For hw_events array, the size should be
93 * hl_info_hw_ip_info.num_of_events * sizeof(__u32)
100 /* Context ID - Currently not in use */
105 /* Opcode to create a new command buffer */
106 #define HL_CB_OP_CREATE 0
107 /* Opcode to destroy previously created command buffer */
108 #define HL_CB_OP_DESTROY 1
111 /* Handle of CB or 0 if we want to create one */
115 /* Size of CB. Minimum requested size must be PAGE_SIZE */
117 /* Context ID - Currently not in use */
129 struct hl_cb_out out;
133 * This structure size must always be fixed to 64-bytes for backward
138 * For external queue, this represents a Handle of CB on the Host
139 * For internal queue, this represents an SRAM or DRAM address of the
143 /* Index of queue to put the CB on */
146 * Size of command buffer with valid packets
147 * Can be smaller then actual CB size
150 /* HL_CS_CHUNK_FLAGS_* */
151 __u32 cs_chunk_flags;
152 /* Align structure to 64 bytes */
156 #define HL_CS_FLAGS_FORCE_RESTORE 0x1
158 #define HL_CS_STATUS_SUCCESS 0
161 /* this holds address of array of hl_cs_chunk for restore phase */
162 __u64 chunks_restore;
163 /* this holds address of array of hl_cs_chunk for execution phase */
164 __u64 chunks_execute;
165 /* this holds address of array of hl_cs_chunk for store phase -
166 * Currently not in use
169 /* Number of chunks in restore phase array */
170 __u32 num_chunks_restore;
171 /* Number of chunks in execution array */
172 __u32 num_chunks_execute;
173 /* Number of chunks in restore phase array - Currently not in use */
174 __u32 num_chunks_store;
177 /* Context ID - Currently not in use */
182 /* this holds the sequence number of the CS to pass to wait ioctl */
191 struct hl_cs_out out;
194 struct hl_wait_cs_in {
195 /* Command submission sequence number */
197 /* Absolute timeout to wait in microseconds */
199 /* Context ID - Currently not in use */
204 #define HL_WAIT_CS_STATUS_COMPLETED 0
205 #define HL_WAIT_CS_STATUS_BUSY 1
206 #define HL_WAIT_CS_STATUS_TIMEDOUT 2
207 #define HL_WAIT_CS_STATUS_ABORTED 3
208 #define HL_WAIT_CS_STATUS_INTERRUPTED 4
210 struct hl_wait_cs_out {
211 /* HL_WAIT_CS_STATUS_* */
216 union hl_wait_cs_args {
217 struct hl_wait_cs_in in;
218 struct hl_wait_cs_out out;
221 /* Opcode to alloc device memory */
222 #define HL_MEM_OP_ALLOC 0
223 /* Opcode to free previously allocated device memory */
224 #define HL_MEM_OP_FREE 1
225 /* Opcode to map host memory */
226 #define HL_MEM_OP_MAP 2
227 /* Opcode to unmap previously mapped host memory */
228 #define HL_MEM_OP_UNMAP 3
231 #define HL_MEM_CONTIGUOUS 0x1
232 #define HL_MEM_SHARED 0x2
233 #define HL_MEM_USERPTR 0x4
237 /* HL_MEM_OP_ALLOC- allocate device memory */
243 /* HL_MEM_OP_FREE - free device memory */
245 /* Handle returned from HL_MEM_OP_ALLOC */
249 /* HL_MEM_OP_MAP - map device memory */
252 * Requested virtual address of mapped memory.
253 * KMD will try to map the requested region to this
254 * hint address, as long as the address is valid and
255 * not already mapped. The user should check the
256 * returned address of the IOCTL to make sure he got
257 * the hint address. Passing 0 here means that KMD
258 * will choose the address itself.
261 /* Handle returned from HL_MEM_OP_ALLOC */
265 /* HL_MEM_OP_MAP - map host memory */
267 /* Address of allocated host memory */
268 __u64 host_virt_addr;
270 * Requested virtual address of mapped memory.
271 * KMD will try to map the requested region to this
272 * hint address, as long as the address is valid and
273 * not already mapped. The user should check the
274 * returned address of the IOCTL to make sure he got
275 * the hint address. Passing 0 here means that KMD
276 * will choose the address itself.
279 /* Size of allocated host memory */
283 /* HL_MEM_OP_UNMAP - unmap host memory */
285 /* Virtual address returned from HL_MEM_OP_MAP */
286 __u64 device_virt_addr;
294 /* Context ID - Currently not in use */
302 * Used for HL_MEM_OP_MAP as the virtual address that was
303 * assigned in the device VA space.
304 * A value of 0 means the requested operation failed.
306 __u64 device_virt_addr;
309 * Used for HL_MEM_OP_ALLOC. This is the assigned
310 * handle for the allocated memory
318 struct hl_mem_out out;
322 * Various information operations such as:
323 * - H/W IP information
324 * - Current dram usage
326 * The user calls this IOCTL with an opcode that describes the required
327 * information. The user should supply a pointer to a user-allocated memory
328 * chunk, which will be filled by the driver with the requested information.
330 * The user supplies the maximum amount of size to copy into the user's memory,
331 * in order to prevent data corruption in case of differences between the
332 * definitions of structures in kernel and userspace, e.g. in case of old
333 * userspace and new kernel driver
335 #define HL_IOCTL_INFO \
336 _IOWR('H', 0x01, struct hl_info_args)
340 * - Request a Command Buffer
341 * - Destroy a Command Buffer
343 * The command buffers are memory blocks that reside in DMA-able address
344 * space and are physically contiguous so they can be accessed by the device
345 * directly. They are allocated using the coherent DMA API.
347 * When creating a new CB, the IOCTL returns a handle of it, and the user-space
348 * process needs to use that handle to mmap the buffer so it can access them.
351 #define HL_IOCTL_CB \
352 _IOWR('H', 0x02, union hl_cb_args)
357 * To submit work to the device, the user need to call this IOCTL with a set
358 * of JOBS. That set of JOBS constitutes a CS object.
359 * Each JOB will be enqueued on a specific queue, according to the user's input.
360 * There can be more then one JOB per queue.
362 * There are two types of queues - external and internal. External queues
363 * are DMA queues which transfer data from/to the Host. All other queues are
364 * internal. The driver will get completion notifications from the device only
365 * on JOBS which are enqueued in the external queues.
367 * This IOCTL is asynchronous in regard to the actual execution of the CS. This
368 * means it returns immediately after ALL the JOBS were enqueued on their
369 * relevant queues. Therefore, the user mustn't assume the CS has been completed
370 * or has even started to execute.
372 * Upon successful enqueue, the IOCTL returns an opaque handle which the user
373 * can use with the "Wait for CS" IOCTL to check whether the handle's CS
374 * external JOBS have been completed. Note that if the CS has internal JOBS
375 * which can execute AFTER the external JOBS have finished, the driver might
376 * report that the CS has finished executing BEFORE the internal JOBS have
377 * actually finish executing.
379 * The CS IOCTL will receive three sets of JOBS. One set is for "restore" phase,
380 * a second set is for "execution" phase and a third set is for "store" phase.
381 * The JOBS on the "restore" phase are enqueued only after context-switch
382 * (or if its the first CS for this context). The user can also order the
383 * driver to run the "restore" phase explicitly
386 #define HL_IOCTL_CS \
387 _IOWR('H', 0x03, union hl_cs_args)
390 * Wait for Command Submission
392 * The user can call this IOCTL with a handle it received from the CS IOCTL
393 * to wait until the handle's CS has finished executing. The user will wait
394 * inside the kernel until the CS has finished or until the user-requeusted
395 * timeout has expired.
397 * The return value of the IOCTL is a standard Linux error code. The possible
400 * EINTR - Kernel waiting has been interrupted, e.g. due to OS signal
401 * that the user process received
402 * ETIMEDOUT - The CS has caused a timeout on the device
403 * EIO - The CS was aborted (usually because the device was reset)
404 * ENODEV - The device wants to do hard-reset (so user need to close FD)
406 * The driver also returns a custom define inside the IOCTL which can be:
408 * HL_WAIT_CS_STATUS_COMPLETED - The CS has been completed successfully (0)
409 * HL_WAIT_CS_STATUS_BUSY - The CS is still executing (0)
410 * HL_WAIT_CS_STATUS_TIMEDOUT - The CS has caused a timeout on the device
412 * HL_WAIT_CS_STATUS_ABORTED - The CS was aborted, usually because the
413 * device was reset (EIO)
414 * HL_WAIT_CS_STATUS_INTERRUPTED - Waiting for the CS was interrupted (EINTR)
418 #define HL_IOCTL_WAIT_CS \
419 _IOWR('H', 0x04, union hl_wait_cs_args)
423 * - Map host memory to device MMU
424 * - Unmap host memory from device MMU
426 * This IOCTL allows the user to map host memory to the device MMU
428 * For host memory, the IOCTL doesn't allocate memory. The user is supposed
429 * to allocate the memory in user-space (malloc/new). The driver pins the
430 * physical pages (up to the allowed limit by the OS), assigns a virtual
431 * address in the device VA space and initializes the device MMU.
433 * There is an option for the user to specify the requested virtual address.
436 #define HL_IOCTL_MEMORY \
437 _IOWR('H', 0x05, union hl_mem_args)
439 #define HL_COMMAND_START 0x01
440 #define HL_COMMAND_END 0x06
442 #endif /* HABANALABS_H_ */