2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2023 Google LLC
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7 * are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright notice, this
10 * list of conditions and the following disclaimer.
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13 * this list of conditions and the following disclaimer in the documentation
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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34 #include <sys/types.h>
36 #include <net/iflib.h>
37 #include <machine/bus.h>
38 #include <machine/resource.h>
40 /* Admin queue opcodes */
41 enum gve_adminq_opcodes {
42 GVE_ADMINQ_DESCRIBE_DEVICE = 0x1,
43 GVE_ADMINQ_CONFIGURE_DEVICE_RESOURCES = 0x2,
44 GVE_ADMINQ_REGISTER_PAGE_LIST = 0x3,
45 GVE_ADMINQ_UNREGISTER_PAGE_LIST = 0x4,
46 GVE_ADMINQ_CREATE_TX_QUEUE = 0x5,
47 GVE_ADMINQ_CREATE_RX_QUEUE = 0x6,
48 GVE_ADMINQ_DESTROY_TX_QUEUE = 0x7,
49 GVE_ADMINQ_DESTROY_RX_QUEUE = 0x8,
50 GVE_ADMINQ_DECONFIGURE_DEVICE_RESOURCES = 0x9,
51 GVE_ADMINQ_SET_DRIVER_PARAMETER = 0xB,
52 GVE_ADMINQ_REPORT_STATS = 0xC,
53 GVE_ADMINQ_REPORT_LINK_SPEED = 0xD,
54 GVE_ADMINQ_GET_PTYPE_MAP = 0xE,
55 GVE_ADMINQ_VERIFY_DRIVER_COMPATIBILITY = 0xF,
58 /* Admin queue status codes */
59 enum gve_adminq_statuses {
60 GVE_ADMINQ_COMMAND_UNSET = 0x0,
61 GVE_ADMINQ_COMMAND_PASSED = 0x1,
62 GVE_ADMINQ_COMMAND_ERROR_ABORTED = 0xFFFFFFF0,
63 GVE_ADMINQ_COMMAND_ERROR_ALREADY_EXISTS = 0xFFFFFFF1,
64 GVE_ADMINQ_COMMAND_ERROR_CANCELLED = 0xFFFFFFF2,
65 GVE_ADMINQ_COMMAND_ERROR_DATALOSS = 0xFFFFFFF3,
66 GVE_ADMINQ_COMMAND_ERROR_DEADLINE_EXCEEDED = 0xFFFFFFF4,
67 GVE_ADMINQ_COMMAND_ERROR_FAILED_PRECONDITION = 0xFFFFFFF5,
68 GVE_ADMINQ_COMMAND_ERROR_INTERNAL_ERROR = 0xFFFFFFF6,
69 GVE_ADMINQ_COMMAND_ERROR_INVALID_ARGUMENT = 0xFFFFFFF7,
70 GVE_ADMINQ_COMMAND_ERROR_NOT_FOUND = 0xFFFFFFF8,
71 GVE_ADMINQ_COMMAND_ERROR_OUT_OF_RANGE = 0xFFFFFFF9,
72 GVE_ADMINQ_COMMAND_ERROR_PERMISSION_DENIED = 0xFFFFFFFA,
73 GVE_ADMINQ_COMMAND_ERROR_UNAUTHENTICATED = 0xFFFFFFFB,
74 GVE_ADMINQ_COMMAND_ERROR_RESOURCE_EXHAUSTED = 0xFFFFFFFC,
75 GVE_ADMINQ_COMMAND_ERROR_UNAVAILABLE = 0xFFFFFFFD,
76 GVE_ADMINQ_COMMAND_ERROR_UNIMPLEMENTED = 0xFFFFFFFE,
77 GVE_ADMINQ_COMMAND_ERROR_UNKNOWN_ERROR = 0xFFFFFFFF,
80 #define GVE_ADMINQ_DEVICE_DESCRIPTOR_VERSION 1
83 * All AdminQ command structs should be naturally packed. The static_assert
84 * calls make sure this is the case at compile time.
87 struct gve_adminq_describe_device {
88 __be64 device_descriptor_addr;
89 __be32 device_descriptor_version;
90 __be32 available_length;
93 _Static_assert(sizeof(struct gve_adminq_describe_device) == 16,
94 "gve: bad admin queue struct length");
96 struct gve_device_descriptor {
97 __be64 max_registered_pages;
99 __be16 tx_queue_entries;
100 __be16 rx_queue_entries;
101 __be16 default_num_queues;
105 __be16 rx_pages_per_qpl;
106 uint8_t mac[ETHER_ADDR_LEN];
107 __be16 num_device_options;
109 uint8_t reserved3[6];
112 _Static_assert(sizeof(struct gve_device_descriptor) == 40,
113 "gve: bad admin queue struct length");
115 struct gve_device_option {
117 __be16 option_length;
118 __be32 required_features_mask;
121 _Static_assert(sizeof(struct gve_device_option) == 8,
122 "gve: bad admin queue struct length");
124 struct gve_device_option_gqi_rda {
125 __be32 supported_features_mask;
128 _Static_assert(sizeof(struct gve_device_option_gqi_rda) == 4,
129 "gve: bad admin queue struct length");
131 struct gve_device_option_gqi_qpl {
132 __be32 supported_features_mask;
135 _Static_assert(sizeof(struct gve_device_option_gqi_qpl) == 4,
136 "gve: bad admin queue struct length");
138 struct gve_device_option_dqo_rda {
139 __be32 supported_features_mask;
142 _Static_assert(sizeof(struct gve_device_option_dqo_rda) == 4,
143 "gve: bad admin queue struct length");
145 struct gve_device_option_modify_ring {
146 __be32 supported_features_mask;
147 __be16 max_rx_ring_size;
148 __be16 max_tx_ring_size;
151 _Static_assert(sizeof(struct gve_device_option_modify_ring) == 8,
152 "gve: bad admin queue struct length");
154 struct gve_device_option_jumbo_frames {
155 __be32 supported_features_mask;
160 _Static_assert(sizeof(struct gve_device_option_jumbo_frames) == 8,
161 "gve: bad admin queue struct length");
163 enum gve_dev_opt_id {
164 GVE_DEV_OPT_ID_GQI_RAW_ADDRESSING = 0x1,
165 GVE_DEV_OPT_ID_GQI_RDA = 0x2,
166 GVE_DEV_OPT_ID_GQI_QPL = 0x3,
167 GVE_DEV_OPT_ID_DQO_RDA = 0x4,
168 GVE_DEV_OPT_ID_MODIFY_RING = 0x6,
169 GVE_DEV_OPT_ID_JUMBO_FRAMES = 0x8,
173 * These masks are way to predicate the use of a particular option on the driver
174 * having particular bug fixes represented by each bit position in the mask.
175 * Currently they are all zero because there are no known bugs preventing the
178 enum gve_dev_opt_req_feat_mask {
179 GVE_DEV_OPT_REQ_FEAT_MASK_GQI_RAW_ADDRESSING = 0x0,
180 GVE_DEV_OPT_REQ_FEAT_MASK_GQI_RDA = 0x0,
181 GVE_DEV_OPT_REQ_FEAT_MASK_GQI_QPL = 0x0,
182 GVE_DEV_OPT_REQ_FEAT_MASK_DQO_RDA = 0x0,
183 GVE_DEV_OPT_REQ_FEAT_MASK_MODIFY_RING = 0x0,
184 GVE_DEV_OPT_REQ_FEAT_MASK_JUMBO_FRAMES = 0x0,
187 enum gve_sup_feature_mask {
188 GVE_SUP_MODIFY_RING_MASK = 1 << 0,
189 GVE_SUP_JUMBO_FRAMES_MASK = 1 << 2,
192 #define GVE_VERSION_STR_LEN 128
194 enum gve_driver_capability {
195 gve_driver_capability_gqi_qpl = 0,
196 gve_driver_capability_gqi_rda = 1,
197 gve_driver_capability_dqo_qpl = 2, /* reserved for future use */
198 gve_driver_capability_dqo_rda = 3,
199 gve_driver_capability_alt_miss_compl = 4,
202 #define GVE_CAP1(a) BIT((int) a)
203 #define GVE_CAP2(a) BIT(((int) a) - 64)
204 #define GVE_CAP3(a) BIT(((int) a) - 128)
205 #define GVE_CAP4(a) BIT(((int) a) - 192)
208 * The following four defines describe 256 compatibility bits.
209 * Only a few bits (as shown in `gve_driver_compatibility`) are currently
210 * defined. The rest are reserved for future use.
212 #define GVE_DRIVER_CAPABILITY_FLAGS1 (GVE_CAP1(gve_driver_capability_gqi_qpl))
213 #define GVE_DRIVER_CAPABILITY_FLAGS2 0x0
214 #define GVE_DRIVER_CAPABILITY_FLAGS3 0x0
215 #define GVE_DRIVER_CAPABILITY_FLAGS4 0x0
217 struct gve_driver_info {
219 uint8_t driver_major;
220 uint8_t driver_minor;
222 __be32 os_version_major;
223 __be32 os_version_minor;
224 __be32 os_version_sub;
225 __be64 driver_capability_flags[4];
226 uint8_t os_version_str1[GVE_VERSION_STR_LEN];
227 uint8_t os_version_str2[GVE_VERSION_STR_LEN];
230 struct gve_adminq_verify_driver_compatibility {
231 __be64 driver_info_len;
232 __be64 driver_info_addr;
235 _Static_assert(sizeof(struct gve_adminq_verify_driver_compatibility) == 16,
236 "gve: bad admin queue struct length");
238 struct gve_adminq_configure_device_resources {
239 __be64 counter_array;
243 __be32 irq_db_stride;
244 __be32 ntfy_blk_msix_base_idx;
245 uint8_t queue_format;
249 _Static_assert(sizeof(struct gve_adminq_configure_device_resources) == 40,
250 "gve: bad admin queue struct length");
252 struct gve_adminq_register_page_list {
255 __be64 page_address_list_addr;
259 _Static_assert(sizeof(struct gve_adminq_register_page_list) == 24,
260 "gve: bad admin queue struct length");
262 struct gve_adminq_unregister_page_list {
266 _Static_assert(sizeof(struct gve_adminq_unregister_page_list) == 4,
267 "gve: bad admin queue struct length");
269 struct gve_adminq_create_tx_queue {
272 __be64 queue_resources_addr;
274 __be32 queue_page_list_id;
276 __be64 tx_comp_ring_addr;
278 __be16 tx_comp_ring_size;
282 _Static_assert(sizeof(struct gve_adminq_create_tx_queue) == 48,
283 "gve: bad admin queue struct length");
285 struct gve_adminq_create_rx_queue {
290 __be64 queue_resources_addr;
291 __be64 rx_desc_ring_addr;
292 __be64 rx_data_ring_addr;
293 __be32 queue_page_list_id;
295 __be16 packet_buffer_size;
296 __be16 rx_buff_ring_size;
301 _Static_assert(sizeof(struct gve_adminq_create_rx_queue) == 56,
302 "gve: bad admin queue struct length");
304 /* Queue resources that are shared with the device */
305 struct gve_queue_resources {
308 __be32 db_index; /* Device -> Guest */
309 __be32 counter_index; /* Device -> Guest */
311 uint8_t reserved[64];
315 _Static_assert(sizeof(struct gve_queue_resources) == 64,
316 "gve: bad admin queue struct length");
318 struct gve_adminq_destroy_tx_queue {
322 _Static_assert(sizeof(struct gve_adminq_destroy_tx_queue) == 4,
323 "gve: bad admin queue struct length");
325 struct gve_adminq_destroy_rx_queue {
329 _Static_assert(sizeof(struct gve_adminq_destroy_rx_queue) == 4,
330 "gve: bad admin queue struct length");
332 /* GVE Set Driver Parameter Types */
333 enum gve_set_driver_param_types {
334 GVE_SET_PARAM_MTU = 0x1,
337 struct gve_adminq_set_driver_parameter {
338 __be32 parameter_type;
340 __be64 parameter_value;
343 _Static_assert(sizeof(struct gve_adminq_set_driver_parameter) == 16,
344 "gve: bad admin queue struct length");
352 _Static_assert(sizeof(struct stats) == 16,
353 "gve: bad admin queue struct length");
355 struct gve_adminq_command {
359 struct gve_adminq_configure_device_resources
360 configure_device_resources;
361 struct gve_adminq_create_tx_queue create_tx_queue;
362 struct gve_adminq_create_rx_queue create_rx_queue;
363 struct gve_adminq_destroy_tx_queue destroy_tx_queue;
364 struct gve_adminq_destroy_rx_queue destroy_rx_queue;
365 struct gve_adminq_describe_device describe_device;
366 struct gve_adminq_register_page_list reg_page_list;
367 struct gve_adminq_unregister_page_list unreg_page_list;
368 struct gve_adminq_set_driver_parameter set_driver_param;
369 struct gve_adminq_verify_driver_compatibility
370 verify_driver_compatibility;
371 uint8_t reserved[56];
375 _Static_assert(sizeof(struct gve_adminq_command) == 64,
376 "gve: bad admin queue struct length");
378 int gve_adminq_create_rx_queues(struct gve_priv *priv, uint32_t num_queues);
379 int gve_adminq_create_tx_queues(struct gve_priv *priv, uint32_t num_queues);
380 int gve_adminq_destroy_tx_queues(struct gve_priv *priv, uint32_t num_queues);
381 int gve_adminq_destroy_rx_queues(struct gve_priv *priv, uint32_t num_queues);
382 int gve_adminq_set_mtu(struct gve_priv *priv, uint32_t mtu);
383 int gve_adminq_alloc(struct gve_priv *priv);
384 void gve_reset_adminq(struct gve_priv *priv);
385 int gve_adminq_describe_device(struct gve_priv *priv);
386 int gve_adminq_configure_device_resources(struct gve_priv *priv);
387 int gve_adminq_deconfigure_device_resources(struct gve_priv *priv);
388 void gve_release_adminq(struct gve_priv *priv);
389 int gve_adminq_register_page_list(struct gve_priv *priv,
390 struct gve_queue_page_list *qpl);
391 int gve_adminq_unregister_page_list(struct gve_priv *priv, uint32_t page_list_id);
392 int gve_adminq_verify_driver_compatibility(struct gve_priv *priv,
393 uint64_t driver_info_len, vm_paddr_t driver_info_addr);
394 #endif /* _GVE_AQ_H_ */