1 /*
2  * Copyright 2017 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 
24 #ifndef _PSP_TEE_GFX_IF_H_
25 #define _PSP_TEE_GFX_IF_H_
26 
27 #define PSP_GFX_CMD_BUF_VERSION     0x00000001
28 
29 #define GFX_CMD_STATUS_MASK         0x0000FFFF
30 #define GFX_CMD_ID_MASK             0x000F0000
31 #define GFX_CMD_RESERVED_MASK       0x7FF00000
32 #define GFX_CMD_RESPONSE_MASK       0x80000000
33 
34 /* USBC PD FW version retrieval command */
35 #define C2PMSG_CMD_GFX_USB_PD_FW_VER 0x2000000
36 
37 /* TEE Gfx Command IDs for the register interface.
38 *  Command ID must be between 0x00010000 and 0x000F0000.
39 */
40 enum psp_gfx_crtl_cmd_id
41 {
42     GFX_CTRL_CMD_ID_INIT_RBI_RING   = 0x00010000,   /* initialize RBI ring */
43     GFX_CTRL_CMD_ID_INIT_GPCOM_RING = 0x00020000,   /* initialize GPCOM ring */
44     GFX_CTRL_CMD_ID_DESTROY_RINGS   = 0x00030000,   /* destroy rings */
45     GFX_CTRL_CMD_ID_CAN_INIT_RINGS  = 0x00040000,   /* is it allowed to initialized the rings */
46     GFX_CTRL_CMD_ID_ENABLE_INT      = 0x00050000,   /* enable PSP-to-Gfx interrupt */
47     GFX_CTRL_CMD_ID_DISABLE_INT     = 0x00060000,   /* disable PSP-to-Gfx interrupt */
48     GFX_CTRL_CMD_ID_MODE1_RST       = 0x00070000,   /* trigger the Mode 1 reset */
49     GFX_CTRL_CMD_ID_GBR_IH_SET      = 0x00080000,   /* set Gbr IH_RB_CNTL registers */
50     GFX_CTRL_CMD_ID_CONSUME_CMD     = 0x000A0000,   /* send interrupt to psp for updating write pointer of vf */
51     GFX_CTRL_CMD_ID_DESTROY_GPCOM_RING = 0x000C0000, /* destroy GPCOM ring */
52 
53     GFX_CTRL_CMD_ID_MAX             = 0x000F0000,   /* max command ID */
54 };
55 
56 
57 /*-----------------------------------------------------------------------------
58     NOTE:   All physical addresses used in this interface are actually
59             GPU Virtual Addresses.
60 */
61 
62 
63 /* Control registers of the TEE Gfx interface. These are located in
64 *  SRBM-to-PSP mailbox registers (total 8 registers).
65 */
66 struct psp_gfx_ctrl
67 {
68     volatile uint32_t   cmd_resp;         /* +0   Command/Response register for Gfx commands */
69     volatile uint32_t   rbi_wptr;         /* +4   Write pointer (index) of RBI ring */
70     volatile uint32_t   rbi_rptr;         /* +8   Read pointer (index) of RBI ring */
71     volatile uint32_t   gpcom_wptr;       /* +12  Write pointer (index) of GPCOM ring */
72     volatile uint32_t   gpcom_rptr;       /* +16  Read pointer (index) of GPCOM ring */
73     volatile uint32_t   ring_addr_lo;     /* +20  bits [31:0] of GPU Virtual of ring buffer (VMID=0)*/
74     volatile uint32_t   ring_addr_hi;     /* +24  bits [63:32] of GPU Virtual of ring buffer (VMID=0) */
75     volatile uint32_t   ring_buf_size;    /* +28  Ring buffer size (in bytes) */
76 
77 };
78 
79 
80 /* Response flag is set in the command when command is completed by PSP.
81 *  Used in the GFX_CTRL.CmdResp.
82 *  When PSP GFX I/F is initialized, the flag is set.
83 */
84 #define GFX_FLAG_RESPONSE               0x80000000
85 
86 /* Gbr IH registers ID */
87 enum ih_reg_id {
88 	IH_RB		= 0,		// IH_RB_CNTL
89 	IH_RB_RNG1	= 1,		// IH_RB_CNTL_RING1
90 	IH_RB_RNG2	= 2,		// IH_RB_CNTL_RING2
91 };
92 
93 /* Command to setup Gibraltar IH register */
94 struct psp_gfx_cmd_gbr_ih_reg {
95 	uint32_t		reg_value;	/* Value to be set to the IH_RB_CNTL... register*/
96 	enum ih_reg_id		reg_id;		/* ID of the register */
97 };
98 
99 /* TEE Gfx Command IDs for the ring buffer interface. */
100 enum psp_gfx_cmd_id
101 {
102     GFX_CMD_ID_LOAD_TA      = 0x00000001,   /* load TA */
103     GFX_CMD_ID_UNLOAD_TA    = 0x00000002,   /* unload TA */
104     GFX_CMD_ID_INVOKE_CMD   = 0x00000003,   /* send command to TA */
105     GFX_CMD_ID_LOAD_ASD     = 0x00000004,   /* load ASD Driver */
106     GFX_CMD_ID_SETUP_TMR    = 0x00000005,   /* setup TMR region */
107     GFX_CMD_ID_LOAD_IP_FW   = 0x00000006,   /* load HW IP FW */
108     GFX_CMD_ID_DESTROY_TMR  = 0x00000007,   /* destroy TMR region */
109     GFX_CMD_ID_SAVE_RESTORE = 0x00000008,   /* save/restore HW IP FW */
110     GFX_CMD_ID_SETUP_VMR    = 0x00000009,   /* setup VMR region */
111     GFX_CMD_ID_DESTROY_VMR  = 0x0000000A,   /* destroy VMR region */
112     GFX_CMD_ID_PROG_REG     = 0x0000000B,   /* program regs */
113     GFX_CMD_ID_CLEAR_VF_FW  = 0x0000000D,   /* Clear VF FW, to be used on VF shutdown. */
114     /* IDs upto 0x1F are reserved for older programs (Raven, Vega 10/12/20) */
115     GFX_CMD_ID_LOAD_TOC     = 0x00000020,   /* Load TOC and obtain TMR size */
116     GFX_CMD_ID_AUTOLOAD_RLC = 0x00000021,   /* Indicates all graphics fw loaded, start RLC autoload */
117 };
118 
119 /* Command to load Trusted Application binary into PSP OS. */
120 struct psp_gfx_cmd_load_ta
121 {
122     uint32_t        app_phy_addr_lo;        /* bits [31:0] of the GPU Virtual address of the TA binary (must be 4 KB aligned) */
123     uint32_t        app_phy_addr_hi;        /* bits [63:32] of the GPU Virtual address of the TA binary */
124     uint32_t        app_len;                /* length of the TA binary in bytes */
125     uint32_t        cmd_buf_phy_addr_lo;    /* bits [31:0] of the GPU Virtual address of CMD buffer (must be 4 KB aligned) */
126     uint32_t        cmd_buf_phy_addr_hi;    /* bits [63:32] of the GPU Virtual address of CMD buffer */
127     uint32_t        cmd_buf_len;            /* length of the CMD buffer in bytes; must be multiple of 4 KB */
128 
129     /* Note: CmdBufLen can be set to 0. In this case no persistent CMD buffer is provided
130     *       for the TA. Each InvokeCommand can have dinamically mapped CMD buffer instead
131     *       of using global persistent buffer.
132     */
133 };
134 
135 
136 /* Command to Unload Trusted Application binary from PSP OS. */
137 struct psp_gfx_cmd_unload_ta
138 {
139     uint32_t        session_id;          /* Session ID of the loaded TA to be unloaded */
140 
141 };
142 
143 
144 /* Shared buffers for InvokeCommand.
145 */
146 struct psp_gfx_buf_desc
147 {
148     uint32_t        buf_phy_addr_lo;       /* bits [31:0] of GPU Virtual address of the buffer (must be 4 KB aligned) */
149     uint32_t        buf_phy_addr_hi;       /* bits [63:32] of GPU Virtual address of the buffer */
150     uint32_t        buf_size;              /* buffer size in bytes (must be multiple of 4 KB and no bigger than 64 MB) */
151 
152 };
153 
154 /* Max number of descriptors for one shared buffer (in how many different
155 *  physical locations one shared buffer can be stored). If buffer is too much
156 *  fragmented, error will be returned.
157 */
158 #define GFX_BUF_MAX_DESC        64
159 
160 struct psp_gfx_buf_list
161 {
162     uint32_t                num_desc;                    /* number of buffer descriptors in the list */
163     uint32_t                total_size;                  /* total size of all buffers in the list in bytes (must be multiple of 4 KB) */
164     struct psp_gfx_buf_desc buf_desc[GFX_BUF_MAX_DESC];  /* list of buffer descriptors */
165 
166     /* total 776 bytes */
167 };
168 
169 /* Command to execute InvokeCommand entry point of the TA. */
170 struct psp_gfx_cmd_invoke_cmd
171 {
172     uint32_t                session_id;           /* Session ID of the TA to be executed */
173     uint32_t                ta_cmd_id;            /* Command ID to be sent to TA */
174     struct psp_gfx_buf_list buf;                  /* one indirect buffer (scatter/gather list) */
175 
176 };
177 
178 
179 /* Command to setup TMR region. */
180 struct psp_gfx_cmd_setup_tmr
181 {
182     uint32_t        buf_phy_addr_lo;       /* bits [31:0] of GPU Virtual address of TMR buffer (must be 4 KB aligned) */
183     uint32_t        buf_phy_addr_hi;       /* bits [63:32] of GPU Virtual address of TMR buffer */
184     uint32_t        buf_size;              /* buffer size in bytes (must be multiple of 4 KB) */
185 
186 };
187 
188 
189 /* FW types for GFX_CMD_ID_LOAD_IP_FW command. Limit 31. */
190 enum psp_gfx_fw_type {
191 	GFX_FW_TYPE_NONE        = 0,    /* */
192 	GFX_FW_TYPE_CP_ME       = 1,    /* CP-ME                    VG + RV */
193 	GFX_FW_TYPE_CP_PFP      = 2,    /* CP-PFP                   VG + RV */
194 	GFX_FW_TYPE_CP_CE       = 3,    /* CP-CE                    VG + RV */
195 	GFX_FW_TYPE_CP_MEC      = 4,    /* CP-MEC FW                VG + RV */
196 	GFX_FW_TYPE_CP_MEC_ME1  = 5,    /* CP-MEC Jump Table 1      VG + RV */
197 	GFX_FW_TYPE_CP_MEC_ME2  = 6,    /* CP-MEC Jump Table 2      VG      */
198 	GFX_FW_TYPE_RLC_V       = 7,    /* RLC-V                    VG      */
199 	GFX_FW_TYPE_RLC_G       = 8,    /* RLC-G                    VG + RV */
200 	GFX_FW_TYPE_SDMA0       = 9,    /* SDMA0                    VG + RV */
201 	GFX_FW_TYPE_SDMA1       = 10,   /* SDMA1                    VG      */
202 	GFX_FW_TYPE_DMCU_ERAM   = 11,   /* DMCU-ERAM                VG + RV */
203 	GFX_FW_TYPE_DMCU_ISR    = 12,   /* DMCU-ISR                 VG + RV */
204 	GFX_FW_TYPE_VCN         = 13,   /* VCN                           RV */
205 	GFX_FW_TYPE_UVD         = 14,   /* UVD                      VG      */
206 	GFX_FW_TYPE_VCE         = 15,   /* VCE                      VG      */
207 	GFX_FW_TYPE_ISP         = 16,   /* ISP                           RV */
208 	GFX_FW_TYPE_ACP         = 17,   /* ACP                           RV */
209 	GFX_FW_TYPE_SMU         = 18,   /* SMU                      VG      */
210 	GFX_FW_TYPE_MMSCH       = 19,   /* MMSCH                    VG      */
211 	GFX_FW_TYPE_RLC_RESTORE_LIST_GPM_MEM        = 20,   /* RLC GPM                  VG + RV */
212 	GFX_FW_TYPE_RLC_RESTORE_LIST_SRM_MEM        = 21,   /* RLC SRM                  VG + RV */
213 	GFX_FW_TYPE_RLC_RESTORE_LIST_SRM_CNTL       = 22,   /* RLC CNTL                 VG + RV */
214 	GFX_FW_TYPE_UVD1        = 23,   /* UVD1                     VG-20   */
215 	GFX_FW_TYPE_TOC         = 24,   /* TOC                      NV-10   */
216 	GFX_FW_TYPE_RLC_P                           = 25,   /* RLC P                    NV      */
217 	GFX_FW_TYPE_RLX6                            = 26,   /* RLX6                     NV      */
218 	GFX_FW_TYPE_GLOBAL_TAP_DELAYS               = 27,   /* GLOBAL TAP DELAYS        NV      */
219 	GFX_FW_TYPE_SE0_TAP_DELAYS                  = 28,   /* SE0 TAP DELAYS           NV      */
220 	GFX_FW_TYPE_SE1_TAP_DELAYS                  = 29,   /* SE1 TAP DELAYS           NV      */
221 	GFX_FW_TYPE_GLOBAL_SE0_SE1_SKEW_DELAYS      = 30,   /* GLOBAL SE0/1 SKEW DELAYS NV      */
222 	GFX_FW_TYPE_SDMA0_JT                        = 31,   /* SDMA0 JT                 NV      */
223 	GFX_FW_TYPE_SDMA1_JT                        = 32,   /* SDNA1 JT                 NV      */
224 	GFX_FW_TYPE_CP_MES                          = 33,   /* CP MES                   NV      */
225 	GFX_FW_TYPE_MES_STACK                       = 34,   /* MES STACK                NV      */
226 	GFX_FW_TYPE_RLC_SRM_DRAM_SR                 = 35,   /* RLC SRM DRAM             NV      */
227 	GFX_FW_TYPE_RLCG_SCRATCH_SR                 = 36,   /* RLCG SCRATCH             NV      */
228 	GFX_FW_TYPE_RLCP_SCRATCH_SR                 = 37,   /* RLCP SCRATCH             NV      */
229 	GFX_FW_TYPE_RLCV_SCRATCH_SR                 = 38,   /* RLCV SCRATCH             NV      */
230 	GFX_FW_TYPE_RLX6_DRAM_SR                    = 39,   /* RLX6 DRAM                NV      */
231 	GFX_FW_TYPE_SDMA0_PG_CONTEXT                = 40,   /* SDMA0 PG CONTEXT         NV      */
232 	GFX_FW_TYPE_SDMA1_PG_CONTEXT                = 41,   /* SDMA1 PG CONTEXT         NV      */
233 	GFX_FW_TYPE_GLOBAL_MUX_SELECT_RAM           = 42,   /* GLOBAL MUX SEL RAM       NV      */
234 	GFX_FW_TYPE_SE0_MUX_SELECT_RAM              = 43,   /* SE0 MUX SEL RAM          NV      */
235 	GFX_FW_TYPE_SE1_MUX_SELECT_RAM              = 44,   /* SE1 MUX SEL RAM          NV      */
236 	GFX_FW_TYPE_ACCUM_CTRL_RAM                  = 45,   /* ACCUM CTRL RAM           NV      */
237 	GFX_FW_TYPE_RLCP_CAM                        = 46,   /* RLCP CAM                 NV      */
238 	GFX_FW_TYPE_RLC_SPP_CAM_EXT                 = 47,   /* RLC SPP CAM EXT          NV      */
239 	GFX_FW_TYPE_RLX6_DRAM_BOOT                  = 48,   /* RLX6 DRAM BOOT           NV      */
240 	GFX_FW_TYPE_VCN0_RAM                        = 49,   /* VCN_RAM                  NV + RN */
241 	GFX_FW_TYPE_VCN1_RAM                        = 50,   /* VCN_RAM                  NV + RN */
242 	GFX_FW_TYPE_DMUB                            = 51,   /* DMUB                          RN */
243 	GFX_FW_TYPE_SDMA2                           = 52,   /* SDMA2                    MI      */
244 	GFX_FW_TYPE_SDMA3                           = 53,   /* SDMA3                    MI      */
245 	GFX_FW_TYPE_SDMA4                           = 54,   /* SDMA4                    MI      */
246 	GFX_FW_TYPE_SDMA5                           = 55,   /* SDMA5                    MI      */
247 	GFX_FW_TYPE_SDMA6                           = 56,   /* SDMA6                    MI      */
248 	GFX_FW_TYPE_SDMA7                           = 57,   /* SDMA7                    MI      */
249 	GFX_FW_TYPE_VCN1                            = 58,   /* VCN1                     MI      */
250 	GFX_FW_TYPE_MAX
251 };
252 
253 /* Command to load HW IP FW. */
254 struct psp_gfx_cmd_load_ip_fw
255 {
256     uint32_t                fw_phy_addr_lo;    /* bits [31:0] of GPU Virtual address of FW location (must be 4 KB aligned) */
257     uint32_t                fw_phy_addr_hi;    /* bits [63:32] of GPU Virtual address of FW location */
258     uint32_t                fw_size;           /* FW buffer size in bytes */
259     enum psp_gfx_fw_type    fw_type;           /* FW type */
260 
261 };
262 
263 /* Command to save/restore HW IP FW. */
264 struct psp_gfx_cmd_save_restore_ip_fw
265 {
266     uint32_t                save_fw;              /* if set, command is used for saving fw otherwise for resetoring*/
267     uint32_t                save_restore_addr_lo; /* bits [31:0] of FB address of GART memory used as save/restore buffer (must be 4 KB aligned) */
268     uint32_t                save_restore_addr_hi; /* bits [63:32] of FB address of GART memory used as save/restore buffer */
269     uint32_t                buf_size;             /* Size of the save/restore buffer in bytes */
270     enum psp_gfx_fw_type    fw_type;              /* FW type */
271 };
272 
273 /* Command to setup register program */
274 struct psp_gfx_cmd_reg_prog {
275 	uint32_t	reg_value;
276 	uint32_t	reg_id;
277 };
278 
279 /* Command to load TOC */
280 struct psp_gfx_cmd_load_toc
281 {
282     uint32_t        toc_phy_addr_lo;        /* bits [31:0] of GPU Virtual address of FW location (must be 4 KB aligned) */
283     uint32_t        toc_phy_addr_hi;        /* bits [63:32] of GPU Virtual address of FW location */
284     uint32_t        toc_size;               /* FW buffer size in bytes */
285 };
286 
287 /* All GFX ring buffer commands. */
288 union psp_gfx_commands
289 {
290     struct psp_gfx_cmd_load_ta          cmd_load_ta;
291     struct psp_gfx_cmd_unload_ta        cmd_unload_ta;
292     struct psp_gfx_cmd_invoke_cmd       cmd_invoke_cmd;
293     struct psp_gfx_cmd_setup_tmr        cmd_setup_tmr;
294     struct psp_gfx_cmd_load_ip_fw       cmd_load_ip_fw;
295     struct psp_gfx_cmd_save_restore_ip_fw cmd_save_restore_ip_fw;
296     struct psp_gfx_cmd_reg_prog       cmd_setup_reg_prog;
297     struct psp_gfx_cmd_setup_tmr        cmd_setup_vmr;
298     struct psp_gfx_cmd_load_toc         cmd_load_toc;
299 };
300 
301 /* Structure of GFX Response buffer.
302 * For GPCOM I/F it is part of GFX_CMD_RESP buffer, for RBI
303 * it is separate buffer.
304 */
305 struct psp_gfx_resp
306 {
307     uint32_t	status;		/* +0  status of command execution */
308     uint32_t	session_id;	/* +4  session ID in response to LoadTa command */
309     uint32_t	fw_addr_lo;	/* +8  bits [31:0] of FW address within TMR (in response to cmd_load_ip_fw command) */
310     uint32_t	fw_addr_hi;	/* +12 bits [63:32] of FW address within TMR (in response to cmd_load_ip_fw command) */
311     uint32_t	tmr_size;	/* +16 size of the TMR to be reserved including MM fw and Gfx fw in response to cmd_load_toc command */
312 
313     uint32_t	reserved[3];
314 
315     /* total 32 bytes */
316 };
317 
318 /* Structure of Command buffer pointed by psp_gfx_rb_frame.cmd_buf_addr_hi
319 *  and psp_gfx_rb_frame.cmd_buf_addr_lo.
320 */
321 struct psp_gfx_cmd_resp
322 {
323     uint32_t        buf_size;           /* +0  total size of the buffer in bytes */
324     uint32_t        buf_version;        /* +4  version of the buffer strusture; must be PSP_GFX_CMD_BUF_VERSION */
325     uint32_t        cmd_id;             /* +8  command ID */
326 
327     /* These fields are used for RBI only. They are all 0 in GPCOM commands
328     */
329     uint32_t        resp_buf_addr_lo;   /* +12 bits [31:0] of GPU Virtual address of response buffer (must be 4 KB aligned) */
330     uint32_t        resp_buf_addr_hi;   /* +16 bits [63:32] of GPU Virtual address of response buffer */
331     uint32_t        resp_offset;        /* +20 offset within response buffer */
332     uint32_t        resp_buf_size;      /* +24 total size of the response buffer in bytes */
333 
334     union psp_gfx_commands  cmd;        /* +28 command specific structures */
335 
336     uint8_t         reserved_1[864 - sizeof(union psp_gfx_commands) - 28];
337 
338     /* Note: Resp is part of this buffer for GPCOM ring. For RBI ring the response
339     *        is separate buffer pointed by resp_buf_addr_hi and resp_buf_addr_lo.
340     */
341     struct psp_gfx_resp     resp;       /* +864 response */
342 
343     uint8_t         reserved_2[1024 - 864 - sizeof(struct psp_gfx_resp)];
344 
345     /* total size 1024 bytes */
346 };
347 
348 
349 #define FRAME_TYPE_DESTROY          1   /* frame sent by KMD driver when UMD Scheduler context is destroyed*/
350 
351 /* Structure of the Ring Buffer Frame */
352 struct psp_gfx_rb_frame
353 {
354     uint32_t    cmd_buf_addr_lo;    /* +0  bits [31:0] of GPU Virtual address of command buffer (must be 4 KB aligned) */
355     uint32_t    cmd_buf_addr_hi;    /* +4  bits [63:32] of GPU Virtual address of command buffer */
356     uint32_t    cmd_buf_size;       /* +8  command buffer size in bytes */
357     uint32_t    fence_addr_lo;      /* +12 bits [31:0] of GPU Virtual address of Fence for this frame */
358     uint32_t    fence_addr_hi;      /* +16 bits [63:32] of GPU Virtual address of Fence for this frame */
359     uint32_t    fence_value;        /* +20 Fence value */
360     uint32_t    sid_lo;             /* +24 bits [31:0] of SID value (used only for RBI frames) */
361     uint32_t    sid_hi;             /* +28 bits [63:32] of SID value (used only for RBI frames) */
362     uint8_t     vmid;               /* +32 VMID value used for mapping of all addresses for this frame */
363     uint8_t     frame_type;         /* +33 1: destory context frame, 0: all other frames; used only for RBI frames */
364     uint8_t     reserved1[2];       /* +34 reserved, must be 0 */
365     uint32_t    reserved2[7];       /* +36 reserved, must be 0 */
366                 /* total 64 bytes */
367 };
368 
369 #define PSP_ERR_UNKNOWN_COMMAND 0x00000100
370 
371 enum tee_error_code {
372     TEE_SUCCESS                         = 0x00000000,
373     TEE_ERROR_NOT_SUPPORTED             = 0xFFFF000A,
374 };
375 
376 #endif /* _PSP_TEE_GFX_IF_H_ */
377