root / hw / spapr_vscsi.c @ 9a3a8895
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1 | 6e270446 | Ben Herrenschmidt | /*
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2 | 6e270446 | Ben Herrenschmidt | * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
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3 | 6e270446 | Ben Herrenschmidt | *
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4 | 6e270446 | Ben Herrenschmidt | * PAPR Virtual SCSI, aka ibmvscsi
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5 | 6e270446 | Ben Herrenschmidt | *
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6 | 6e270446 | Ben Herrenschmidt | * Copyright (c) 2010,2011 Benjamin Herrenschmidt, IBM Corporation.
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7 | 6e270446 | Ben Herrenschmidt | *
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8 | 6e270446 | Ben Herrenschmidt | * Permission is hereby granted, free of charge, to any person obtaining a copy
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9 | 6e270446 | Ben Herrenschmidt | * of this software and associated documentation files (the "Software"), to deal
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10 | 6e270446 | Ben Herrenschmidt | * in the Software without restriction, including without limitation the rights
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11 | 6e270446 | Ben Herrenschmidt | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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12 | 6e270446 | Ben Herrenschmidt | * copies of the Software, and to permit persons to whom the Software is
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13 | 6e270446 | Ben Herrenschmidt | * furnished to do so, subject to the following conditions:
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14 | 6e270446 | Ben Herrenschmidt | *
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15 | 6e270446 | Ben Herrenschmidt | * The above copyright notice and this permission notice shall be included in
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16 | 6e270446 | Ben Herrenschmidt | * all copies or substantial portions of the Software.
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17 | 6e270446 | Ben Herrenschmidt | *
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18 | 6e270446 | Ben Herrenschmidt | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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19 | 6e270446 | Ben Herrenschmidt | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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20 | 6e270446 | Ben Herrenschmidt | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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21 | 6e270446 | Ben Herrenschmidt | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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22 | 6e270446 | Ben Herrenschmidt | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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23 | 6e270446 | Ben Herrenschmidt | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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24 | 6e270446 | Ben Herrenschmidt | * THE SOFTWARE.
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25 | 6e270446 | Ben Herrenschmidt | *
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26 | 6e270446 | Ben Herrenschmidt | * TODO:
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27 | 6e270446 | Ben Herrenschmidt | *
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28 | 6e270446 | Ben Herrenschmidt | * - Cleanups :-)
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29 | 6e270446 | Ben Herrenschmidt | * - Sort out better how to assign devices to VSCSI instances
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30 | 6e270446 | Ben Herrenschmidt | * - Fix residual counts
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31 | 6e270446 | Ben Herrenschmidt | * - Add indirect descriptors support
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32 | 6e270446 | Ben Herrenschmidt | * - Maybe do autosense (PAPR seems to mandate it, linux doesn't care)
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33 | 6e270446 | Ben Herrenschmidt | */
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34 | 6e270446 | Ben Herrenschmidt | #include "hw.h" |
35 | 6e270446 | Ben Herrenschmidt | #include "scsi.h" |
36 | 6e270446 | Ben Herrenschmidt | #include "scsi-defs.h" |
37 | 6e270446 | Ben Herrenschmidt | #include "net.h" /* Remove that when we can */ |
38 | 6e270446 | Ben Herrenschmidt | #include "srp.h" |
39 | 6e270446 | Ben Herrenschmidt | #include "hw/qdev.h" |
40 | 6e270446 | Ben Herrenschmidt | #include "hw/spapr.h" |
41 | 6e270446 | Ben Herrenschmidt | #include "hw/spapr_vio.h" |
42 | 6e270446 | Ben Herrenschmidt | #include "hw/ppc-viosrp.h" |
43 | 6e270446 | Ben Herrenschmidt | |
44 | 6e270446 | Ben Herrenschmidt | #include <libfdt.h> |
45 | 6e270446 | Ben Herrenschmidt | |
46 | 6e270446 | Ben Herrenschmidt | /*#define DEBUG_VSCSI*/
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47 | 6e270446 | Ben Herrenschmidt | |
48 | 6e270446 | Ben Herrenschmidt | #ifdef DEBUG_VSCSI
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49 | 6e270446 | Ben Herrenschmidt | #define dprintf(fmt, ...) \
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50 | 6e270446 | Ben Herrenschmidt | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
51 | 6e270446 | Ben Herrenschmidt | #else
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52 | 6e270446 | Ben Herrenschmidt | #define dprintf(fmt, ...) \
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53 | 6e270446 | Ben Herrenschmidt | do { } while (0) |
54 | 6e270446 | Ben Herrenschmidt | #endif
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55 | 6e270446 | Ben Herrenschmidt | |
56 | 6e270446 | Ben Herrenschmidt | /*
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57 | 6e270446 | Ben Herrenschmidt | * Virtual SCSI device
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58 | 6e270446 | Ben Herrenschmidt | */
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59 | 6e270446 | Ben Herrenschmidt | |
60 | 6e270446 | Ben Herrenschmidt | /* Random numbers */
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61 | 6e270446 | Ben Herrenschmidt | #define VSCSI_MAX_SECTORS 4096 |
62 | 6e270446 | Ben Herrenschmidt | #define VSCSI_REQ_LIMIT 24 |
63 | 6e270446 | Ben Herrenschmidt | |
64 | 6e270446 | Ben Herrenschmidt | #define SCSI_SENSE_BUF_SIZE 96 |
65 | 6e270446 | Ben Herrenschmidt | #define SRP_RSP_SENSE_DATA_LEN 18 |
66 | 6e270446 | Ben Herrenschmidt | |
67 | 6e270446 | Ben Herrenschmidt | typedef union vscsi_crq { |
68 | 6e270446 | Ben Herrenschmidt | struct viosrp_crq s;
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69 | 6e270446 | Ben Herrenschmidt | uint8_t raw[16];
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70 | 6e270446 | Ben Herrenschmidt | } vscsi_crq; |
71 | 6e270446 | Ben Herrenschmidt | |
72 | 6e270446 | Ben Herrenschmidt | typedef struct vscsi_req { |
73 | 6e270446 | Ben Herrenschmidt | vscsi_crq crq; |
74 | 6e270446 | Ben Herrenschmidt | union viosrp_iu iu;
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75 | 6e270446 | Ben Herrenschmidt | |
76 | 6e270446 | Ben Herrenschmidt | /* SCSI request tracking */
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77 | 5c6c0e51 | Hannes Reinecke | SCSIRequest *sreq; |
78 | 6e270446 | Ben Herrenschmidt | uint32_t qtag; /* qemu tag != srp tag */
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79 | 6e270446 | Ben Herrenschmidt | int lun;
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80 | 6e270446 | Ben Herrenschmidt | int active;
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81 | 6e270446 | Ben Herrenschmidt | long data_len;
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82 | 6e270446 | Ben Herrenschmidt | int writing;
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83 | 6e270446 | Ben Herrenschmidt | int senselen;
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84 | 6e270446 | Ben Herrenschmidt | uint8_t sense[SCSI_SENSE_BUF_SIZE]; |
85 | 6e270446 | Ben Herrenschmidt | |
86 | 6e270446 | Ben Herrenschmidt | /* RDMA related bits */
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87 | 6e270446 | Ben Herrenschmidt | uint8_t dma_fmt; |
88 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf ext_desc;
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89 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf *cur_desc;
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90 | 6e270446 | Ben Herrenschmidt | struct srp_indirect_buf *ind_desc;
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91 | 6e270446 | Ben Herrenschmidt | int local_desc;
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92 | 6e270446 | Ben Herrenschmidt | int total_desc;
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93 | 6e270446 | Ben Herrenschmidt | } vscsi_req; |
94 | 6e270446 | Ben Herrenschmidt | |
95 | 6e270446 | Ben Herrenschmidt | |
96 | 6e270446 | Ben Herrenschmidt | typedef struct { |
97 | 6e270446 | Ben Herrenschmidt | VIOsPAPRDevice vdev; |
98 | 6e270446 | Ben Herrenschmidt | SCSIBus bus; |
99 | 6e270446 | Ben Herrenschmidt | vscsi_req reqs[VSCSI_REQ_LIMIT]; |
100 | 6e270446 | Ben Herrenschmidt | } VSCSIState; |
101 | 6e270446 | Ben Herrenschmidt | |
102 | 6e270446 | Ben Herrenschmidt | static struct vscsi_req *vscsi_get_req(VSCSIState *s) |
103 | 6e270446 | Ben Herrenschmidt | { |
104 | 6e270446 | Ben Herrenschmidt | vscsi_req *req; |
105 | 6e270446 | Ben Herrenschmidt | int i;
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106 | 6e270446 | Ben Herrenschmidt | |
107 | 6e270446 | Ben Herrenschmidt | for (i = 0; i < VSCSI_REQ_LIMIT; i++) { |
108 | 6e270446 | Ben Herrenschmidt | req = &s->reqs[i]; |
109 | 6e270446 | Ben Herrenschmidt | if (!req->active) {
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110 | 6e270446 | Ben Herrenschmidt | memset(req, 0, sizeof(*req)); |
111 | 6e270446 | Ben Herrenschmidt | req->qtag = i; |
112 | 6e270446 | Ben Herrenschmidt | req->active = 1;
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113 | 6e270446 | Ben Herrenschmidt | return req;
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114 | 6e270446 | Ben Herrenschmidt | } |
115 | 6e270446 | Ben Herrenschmidt | } |
116 | 6e270446 | Ben Herrenschmidt | return NULL; |
117 | 6e270446 | Ben Herrenschmidt | } |
118 | 6e270446 | Ben Herrenschmidt | |
119 | c5bf71a9 | Hannes Reinecke | static void vscsi_put_req(vscsi_req *req) |
120 | 6e270446 | Ben Herrenschmidt | { |
121 | 5c6c0e51 | Hannes Reinecke | if (req->sreq != NULL) { |
122 | 5c6c0e51 | Hannes Reinecke | scsi_req_unref(req->sreq); |
123 | 5c6c0e51 | Hannes Reinecke | } |
124 | 5c6c0e51 | Hannes Reinecke | req->sreq = NULL;
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125 | 6e270446 | Ben Herrenschmidt | req->active = 0;
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126 | 6e270446 | Ben Herrenschmidt | } |
127 | 6e270446 | Ben Herrenschmidt | |
128 | f48a7a6e | Paolo Bonzini | static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun) |
129 | 6e270446 | Ben Herrenschmidt | { |
130 | 7e0380b9 | Paolo Bonzini | int channel = 0, id = 0; |
131 | 7e0380b9 | Paolo Bonzini | |
132 | 7e0380b9 | Paolo Bonzini | retry:
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133 | 7e0380b9 | Paolo Bonzini | switch (srp_lun >> 62) { |
134 | 7e0380b9 | Paolo Bonzini | case 0: |
135 | 7e0380b9 | Paolo Bonzini | if ((srp_lun >> 56) != 0) { |
136 | 7e0380b9 | Paolo Bonzini | channel = (srp_lun >> 56) & 0x3f; |
137 | 7e0380b9 | Paolo Bonzini | id = (srp_lun >> 48) & 0xff; |
138 | 7e0380b9 | Paolo Bonzini | srp_lun <<= 16;
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139 | 7e0380b9 | Paolo Bonzini | goto retry;
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140 | 7e0380b9 | Paolo Bonzini | } |
141 | 7e0380b9 | Paolo Bonzini | *lun = (srp_lun >> 48) & 0xff; |
142 | 7e0380b9 | Paolo Bonzini | break;
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143 | 7e0380b9 | Paolo Bonzini | |
144 | 7e0380b9 | Paolo Bonzini | case 1: |
145 | 7e0380b9 | Paolo Bonzini | *lun = (srp_lun >> 48) & 0x3fff; |
146 | 7e0380b9 | Paolo Bonzini | break;
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147 | 7e0380b9 | Paolo Bonzini | case 2: |
148 | 7e0380b9 | Paolo Bonzini | channel = (srp_lun >> 53) & 0x7; |
149 | 7e0380b9 | Paolo Bonzini | id = (srp_lun >> 56) & 0x3f; |
150 | 7e0380b9 | Paolo Bonzini | *lun = (srp_lun >> 48) & 0x1f; |
151 | 7e0380b9 | Paolo Bonzini | break;
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152 | 7e0380b9 | Paolo Bonzini | case 3: |
153 | 7e0380b9 | Paolo Bonzini | *lun = -1;
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154 | 7e0380b9 | Paolo Bonzini | return NULL; |
155 | 7e0380b9 | Paolo Bonzini | default:
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156 | 7e0380b9 | Paolo Bonzini | abort(); |
157 | 7e0380b9 | Paolo Bonzini | } |
158 | 7e0380b9 | Paolo Bonzini | |
159 | 0d3545e7 | Paolo Bonzini | return scsi_device_find(bus, channel, id, *lun);
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160 | 6e270446 | Ben Herrenschmidt | } |
161 | 6e270446 | Ben Herrenschmidt | |
162 | 6e270446 | Ben Herrenschmidt | static int vscsi_send_iu(VSCSIState *s, vscsi_req *req, |
163 | 6e270446 | Ben Herrenschmidt | uint64_t length, uint8_t format) |
164 | 6e270446 | Ben Herrenschmidt | { |
165 | 6e270446 | Ben Herrenschmidt | long rc, rc1;
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166 | 6e270446 | Ben Herrenschmidt | |
167 | 6e270446 | Ben Herrenschmidt | /* First copy the SRP */
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168 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr, |
169 | 6e270446 | Ben Herrenschmidt | &req->iu, length); |
170 | 6e270446 | Ben Herrenschmidt | if (rc) {
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171 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_send_iu: DMA write failure !\n");
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172 | 6e270446 | Ben Herrenschmidt | } |
173 | 6e270446 | Ben Herrenschmidt | |
174 | 6e270446 | Ben Herrenschmidt | req->crq.s.valid = 0x80;
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175 | 6e270446 | Ben Herrenschmidt | req->crq.s.format = format; |
176 | 6e270446 | Ben Herrenschmidt | req->crq.s.reserved = 0x00;
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177 | 6e270446 | Ben Herrenschmidt | req->crq.s.timeout = cpu_to_be16(0x0000);
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178 | 6e270446 | Ben Herrenschmidt | req->crq.s.IU_length = cpu_to_be16(length); |
179 | 6e270446 | Ben Herrenschmidt | req->crq.s.IU_data_ptr = req->iu.srp.rsp.tag; /* right byte order */
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180 | 6e270446 | Ben Herrenschmidt | |
181 | 6e270446 | Ben Herrenschmidt | if (rc == 0) { |
182 | 6e270446 | Ben Herrenschmidt | req->crq.s.status = 0x99; /* Just needs to be non-zero */ |
183 | 6e270446 | Ben Herrenschmidt | } else {
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184 | 6e270446 | Ben Herrenschmidt | req->crq.s.status = 0x00;
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185 | 6e270446 | Ben Herrenschmidt | } |
186 | 6e270446 | Ben Herrenschmidt | |
187 | 6e270446 | Ben Herrenschmidt | rc1 = spapr_vio_send_crq(&s->vdev, req->crq.raw); |
188 | 6e270446 | Ben Herrenschmidt | if (rc1) {
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189 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_send_iu: Error sending response\n");
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190 | 6e270446 | Ben Herrenschmidt | return rc1;
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191 | 6e270446 | Ben Herrenschmidt | } |
192 | 6e270446 | Ben Herrenschmidt | |
193 | 6e270446 | Ben Herrenschmidt | return rc;
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194 | 6e270446 | Ben Herrenschmidt | } |
195 | 6e270446 | Ben Herrenschmidt | |
196 | 6e270446 | Ben Herrenschmidt | static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req, |
197 | 6e270446 | Ben Herrenschmidt | uint8_t key, uint8_t asc, uint8_t ascq) |
198 | 6e270446 | Ben Herrenschmidt | { |
199 | 6e270446 | Ben Herrenschmidt | req->senselen = SRP_RSP_SENSE_DATA_LEN; |
200 | 6e270446 | Ben Herrenschmidt | |
201 | 6e270446 | Ben Herrenschmidt | /* Valid bit and 'current errors' */
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202 | 6e270446 | Ben Herrenschmidt | req->sense[0] = (0x1 << 7 | 0x70); |
203 | 6e270446 | Ben Herrenschmidt | /* Sense key */
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204 | 6e270446 | Ben Herrenschmidt | req->sense[2] = key;
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205 | 6e270446 | Ben Herrenschmidt | /* Additional sense length */
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206 | 6e270446 | Ben Herrenschmidt | req->sense[7] = 0xa; /* 10 bytes */ |
207 | 6e270446 | Ben Herrenschmidt | /* Additional sense code */
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208 | 6e270446 | Ben Herrenschmidt | req->sense[12] = asc;
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209 | 6e270446 | Ben Herrenschmidt | req->sense[13] = ascq;
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210 | 6e270446 | Ben Herrenschmidt | } |
211 | 6e270446 | Ben Herrenschmidt | |
212 | 6e270446 | Ben Herrenschmidt | static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req, |
213 | 6e270446 | Ben Herrenschmidt | uint8_t status, int32_t res_in, int32_t res_out) |
214 | 6e270446 | Ben Herrenschmidt | { |
215 | 6e270446 | Ben Herrenschmidt | union viosrp_iu *iu = &req->iu;
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216 | 6e270446 | Ben Herrenschmidt | uint64_t tag = iu->srp.rsp.tag; |
217 | 6e270446 | Ben Herrenschmidt | int total_len = sizeof(iu->srp.rsp); |
218 | 6e270446 | Ben Herrenschmidt | |
219 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: Sending resp status: 0x%x, "
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220 | 6e270446 | Ben Herrenschmidt | "res_in: %d, res_out: %d\n", status, res_in, res_out);
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221 | 6e270446 | Ben Herrenschmidt | |
222 | 6e270446 | Ben Herrenschmidt | memset(iu, 0, sizeof(struct srp_rsp)); |
223 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.opcode = SRP_RSP; |
224 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.req_lim_delta = cpu_to_be32(1);
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225 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.tag = tag; |
226 | 6e270446 | Ben Herrenschmidt | |
227 | 6e270446 | Ben Herrenschmidt | /* Handle residuals */
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228 | 6e270446 | Ben Herrenschmidt | if (res_in < 0) { |
229 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.flags |= SRP_RSP_FLAG_DIUNDER; |
230 | 6e270446 | Ben Herrenschmidt | res_in = -res_in; |
231 | 6e270446 | Ben Herrenschmidt | } else if (res_in) { |
232 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.flags |= SRP_RSP_FLAG_DIOVER; |
233 | 6e270446 | Ben Herrenschmidt | } |
234 | 6e270446 | Ben Herrenschmidt | if (res_out < 0) { |
235 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.flags |= SRP_RSP_FLAG_DOUNDER; |
236 | 6e270446 | Ben Herrenschmidt | res_out = -res_out; |
237 | 6e270446 | Ben Herrenschmidt | } else if (res_out) { |
238 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.flags |= SRP_RSP_FLAG_DOOVER; |
239 | 6e270446 | Ben Herrenschmidt | } |
240 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.data_in_res_cnt = cpu_to_be32(res_in); |
241 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.data_out_res_cnt = cpu_to_be32(res_out); |
242 | 6e270446 | Ben Herrenschmidt | |
243 | 6e270446 | Ben Herrenschmidt | /* We don't do response data */
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244 | 6e270446 | Ben Herrenschmidt | /* iu->srp.rsp.flags &= ~SRP_RSP_FLAG_RSPVALID; */
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245 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.resp_data_len = cpu_to_be32(0);
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246 | 6e270446 | Ben Herrenschmidt | |
247 | 6e270446 | Ben Herrenschmidt | /* Handle success vs. failure */
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248 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.status = status; |
249 | 6e270446 | Ben Herrenschmidt | if (status) {
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250 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.sol_not = (iu->srp.cmd.sol_not & 0x04) >> 2; |
251 | 6e270446 | Ben Herrenschmidt | if (req->senselen) {
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252 | 6e270446 | Ben Herrenschmidt | req->iu.srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID; |
253 | 6e270446 | Ben Herrenschmidt | req->iu.srp.rsp.sense_data_len = cpu_to_be32(req->senselen); |
254 | 6e270446 | Ben Herrenschmidt | memcpy(req->iu.srp.rsp.data, req->sense, req->senselen); |
255 | 6e270446 | Ben Herrenschmidt | total_len += req->senselen; |
256 | 6e270446 | Ben Herrenschmidt | } |
257 | 6e270446 | Ben Herrenschmidt | } else {
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258 | 6e270446 | Ben Herrenschmidt | iu->srp.rsp.sol_not = (iu->srp.cmd.sol_not & 0x02) >> 1; |
259 | 6e270446 | Ben Herrenschmidt | } |
260 | 6e270446 | Ben Herrenschmidt | |
261 | 6e270446 | Ben Herrenschmidt | vscsi_send_iu(s, req, total_len, VIOSRP_SRP_FORMAT); |
262 | 6e270446 | Ben Herrenschmidt | return 0; |
263 | 6e270446 | Ben Herrenschmidt | } |
264 | 6e270446 | Ben Herrenschmidt | |
265 | 6e270446 | Ben Herrenschmidt | static inline void vscsi_swap_desc(struct srp_direct_buf *desc) |
266 | 6e270446 | Ben Herrenschmidt | { |
267 | 6e270446 | Ben Herrenschmidt | desc->va = be64_to_cpu(desc->va); |
268 | 6e270446 | Ben Herrenschmidt | desc->len = be32_to_cpu(desc->len); |
269 | 6e270446 | Ben Herrenschmidt | } |
270 | 6e270446 | Ben Herrenschmidt | |
271 | 6e270446 | Ben Herrenschmidt | static int vscsi_srp_direct_data(VSCSIState *s, vscsi_req *req, |
272 | 6e270446 | Ben Herrenschmidt | uint8_t *buf, uint32_t len) |
273 | 6e270446 | Ben Herrenschmidt | { |
274 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf *md = req->cur_desc;
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275 | 6e270446 | Ben Herrenschmidt | uint32_t llen; |
276 | 8804f57b | Stefan Weil | int rc = 0; |
277 | 6e270446 | Ben Herrenschmidt | |
278 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: direct segment 0x%x bytes, va=0x%llx desc len=0x%x\n",
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279 | 6e270446 | Ben Herrenschmidt | len, (unsigned long long)md->va, md->len); |
280 | 6e270446 | Ben Herrenschmidt | |
281 | 6e270446 | Ben Herrenschmidt | llen = MIN(len, md->len); |
282 | 6e270446 | Ben Herrenschmidt | if (llen) {
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283 | 6e270446 | Ben Herrenschmidt | if (req->writing) { /* writing = to device = reading from memory */ |
284 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_read(&s->vdev, md->va, buf, llen); |
285 | 6e270446 | Ben Herrenschmidt | } else {
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286 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_write(&s->vdev, md->va, buf, llen); |
287 | 6e270446 | Ben Herrenschmidt | } |
288 | 6e270446 | Ben Herrenschmidt | } |
289 | 6e270446 | Ben Herrenschmidt | md->len -= llen; |
290 | 6e270446 | Ben Herrenschmidt | md->va += llen; |
291 | 6e270446 | Ben Herrenschmidt | |
292 | 6e270446 | Ben Herrenschmidt | if (rc) {
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293 | 6e270446 | Ben Herrenschmidt | return -1; |
294 | 6e270446 | Ben Herrenschmidt | } |
295 | 6e270446 | Ben Herrenschmidt | return llen;
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296 | 6e270446 | Ben Herrenschmidt | } |
297 | 6e270446 | Ben Herrenschmidt | |
298 | 6e270446 | Ben Herrenschmidt | static int vscsi_srp_indirect_data(VSCSIState *s, vscsi_req *req, |
299 | 6e270446 | Ben Herrenschmidt | uint8_t *buf, uint32_t len) |
300 | 6e270446 | Ben Herrenschmidt | { |
301 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf *td = &req->ind_desc->table_desc;
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302 | 6e270446 | Ben Herrenschmidt | struct srp_direct_buf *md = req->cur_desc;
|
303 | 6e270446 | Ben Herrenschmidt | int rc = 0; |
304 | 6e270446 | Ben Herrenschmidt | uint32_t llen, total = 0;
|
305 | 6e270446 | Ben Herrenschmidt | |
306 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: indirect segment 0x%x bytes, td va=0x%llx len=0x%x\n",
|
307 | 6e270446 | Ben Herrenschmidt | len, (unsigned long long)td->va, td->len); |
308 | 6e270446 | Ben Herrenschmidt | |
309 | 6e270446 | Ben Herrenschmidt | /* While we have data ... */
|
310 | 6e270446 | Ben Herrenschmidt | while (len) {
|
311 | 6e270446 | Ben Herrenschmidt | /* If we have a descriptor but it's empty, go fetch a new one */
|
312 | 6e270446 | Ben Herrenschmidt | if (md && md->len == 0) { |
313 | 6e270446 | Ben Herrenschmidt | /* More local available, use one */
|
314 | 6e270446 | Ben Herrenschmidt | if (req->local_desc) {
|
315 | 6e270446 | Ben Herrenschmidt | md = ++req->cur_desc; |
316 | 6e270446 | Ben Herrenschmidt | --req->local_desc; |
317 | 6e270446 | Ben Herrenschmidt | --req->total_desc; |
318 | 6e270446 | Ben Herrenschmidt | td->va += sizeof(struct srp_direct_buf); |
319 | 6e270446 | Ben Herrenschmidt | } else {
|
320 | 6e270446 | Ben Herrenschmidt | md = req->cur_desc = NULL;
|
321 | 6e270446 | Ben Herrenschmidt | } |
322 | 6e270446 | Ben Herrenschmidt | } |
323 | 6e270446 | Ben Herrenschmidt | /* No descriptor at hand, fetch one */
|
324 | 6e270446 | Ben Herrenschmidt | if (!md) {
|
325 | 6e270446 | Ben Herrenschmidt | if (!req->total_desc) {
|
326 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: Out of descriptors !\n");
|
327 | 6e270446 | Ben Herrenschmidt | break;
|
328 | 6e270446 | Ben Herrenschmidt | } |
329 | 6e270446 | Ben Herrenschmidt | md = req->cur_desc = &req->ext_desc; |
330 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: Reading desc from 0x%llx\n",
|
331 | 6e270446 | Ben Herrenschmidt | (unsigned long long)td->va); |
332 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_read(&s->vdev, td->va, md, |
333 | 6e270446 | Ben Herrenschmidt | sizeof(struct srp_direct_buf)); |
334 | 6e270446 | Ben Herrenschmidt | if (rc) {
|
335 | ad0ebb91 | David Gibson | dprintf("VSCSI: spapr_vio_dma_read -> %d reading ext_desc\n",
|
336 | ad0ebb91 | David Gibson | rc); |
337 | 6e270446 | Ben Herrenschmidt | break;
|
338 | 6e270446 | Ben Herrenschmidt | } |
339 | 6e270446 | Ben Herrenschmidt | vscsi_swap_desc(md); |
340 | 6e270446 | Ben Herrenschmidt | td->va += sizeof(struct srp_direct_buf); |
341 | 6e270446 | Ben Herrenschmidt | --req->total_desc; |
342 | 6e270446 | Ben Herrenschmidt | } |
343 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: [desc va=0x%llx,len=0x%x] remaining=0x%x\n",
|
344 | 6e270446 | Ben Herrenschmidt | (unsigned long long)md->va, md->len, len); |
345 | 6e270446 | Ben Herrenschmidt | |
346 | 6e270446 | Ben Herrenschmidt | /* Perform transfer */
|
347 | 6e270446 | Ben Herrenschmidt | llen = MIN(len, md->len); |
348 | 6e270446 | Ben Herrenschmidt | if (req->writing) { /* writing = to device = reading from memory */ |
349 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_read(&s->vdev, md->va, buf, llen); |
350 | 6e270446 | Ben Herrenschmidt | } else {
|
351 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_write(&s->vdev, md->va, buf, llen); |
352 | 6e270446 | Ben Herrenschmidt | } |
353 | 6e270446 | Ben Herrenschmidt | if (rc) {
|
354 | ad0ebb91 | David Gibson | dprintf("VSCSI: spapr_vio_dma_r/w(%d) -> %d\n", req->writing, rc);
|
355 | 6e270446 | Ben Herrenschmidt | break;
|
356 | 6e270446 | Ben Herrenschmidt | } |
357 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: data: %02x %02x %02x %02x...\n",
|
358 | 6e270446 | Ben Herrenschmidt | buf[0], buf[1], buf[2], buf[3]); |
359 | 6e270446 | Ben Herrenschmidt | |
360 | 6e270446 | Ben Herrenschmidt | len -= llen; |
361 | 6e270446 | Ben Herrenschmidt | buf += llen; |
362 | 6e270446 | Ben Herrenschmidt | total += llen; |
363 | 6e270446 | Ben Herrenschmidt | md->va += llen; |
364 | 6e270446 | Ben Herrenschmidt | md->len -= llen; |
365 | 6e270446 | Ben Herrenschmidt | } |
366 | 6e270446 | Ben Herrenschmidt | return rc ? -1 : total; |
367 | 6e270446 | Ben Herrenschmidt | } |
368 | 6e270446 | Ben Herrenschmidt | |
369 | 6e270446 | Ben Herrenschmidt | static int vscsi_srp_transfer_data(VSCSIState *s, vscsi_req *req, |
370 | 6e270446 | Ben Herrenschmidt | int writing, uint8_t *buf, uint32_t len)
|
371 | 6e270446 | Ben Herrenschmidt | { |
372 | 6e270446 | Ben Herrenschmidt | int err = 0; |
373 | 6e270446 | Ben Herrenschmidt | |
374 | 6e270446 | Ben Herrenschmidt | switch (req->dma_fmt) {
|
375 | 6e270446 | Ben Herrenschmidt | case SRP_NO_DATA_DESC:
|
376 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: no data desc transfer, skipping 0x%x bytes\n", len);
|
377 | 6e270446 | Ben Herrenschmidt | break;
|
378 | 6e270446 | Ben Herrenschmidt | case SRP_DATA_DESC_DIRECT:
|
379 | 6e270446 | Ben Herrenschmidt | err = vscsi_srp_direct_data(s, req, buf, len); |
380 | 6e270446 | Ben Herrenschmidt | break;
|
381 | 6e270446 | Ben Herrenschmidt | case SRP_DATA_DESC_INDIRECT:
|
382 | 6e270446 | Ben Herrenschmidt | err = vscsi_srp_indirect_data(s, req, buf, len); |
383 | 6e270446 | Ben Herrenschmidt | break;
|
384 | 6e270446 | Ben Herrenschmidt | } |
385 | 6e270446 | Ben Herrenschmidt | return err;
|
386 | 6e270446 | Ben Herrenschmidt | } |
387 | 6e270446 | Ben Herrenschmidt | |
388 | 6e270446 | Ben Herrenschmidt | /* Bits from linux srp */
|
389 | 6e270446 | Ben Herrenschmidt | static int data_out_desc_size(struct srp_cmd *cmd) |
390 | 6e270446 | Ben Herrenschmidt | { |
391 | 6e270446 | Ben Herrenschmidt | int size = 0; |
392 | 6e270446 | Ben Herrenschmidt | uint8_t fmt = cmd->buf_fmt >> 4;
|
393 | 6e270446 | Ben Herrenschmidt | |
394 | 6e270446 | Ben Herrenschmidt | switch (fmt) {
|
395 | 6e270446 | Ben Herrenschmidt | case SRP_NO_DATA_DESC:
|
396 | 6e270446 | Ben Herrenschmidt | break;
|
397 | 6e270446 | Ben Herrenschmidt | case SRP_DATA_DESC_DIRECT:
|
398 | 6e270446 | Ben Herrenschmidt | size = sizeof(struct srp_direct_buf); |
399 | 6e270446 | Ben Herrenschmidt | break;
|
400 | 6e270446 | Ben Herrenschmidt | case SRP_DATA_DESC_INDIRECT:
|
401 | 6e270446 | Ben Herrenschmidt | size = sizeof(struct srp_indirect_buf) + |
402 | 6e270446 | Ben Herrenschmidt | sizeof(struct srp_direct_buf)*cmd->data_out_desc_cnt; |
403 | 6e270446 | Ben Herrenschmidt | break;
|
404 | 6e270446 | Ben Herrenschmidt | default:
|
405 | 6e270446 | Ben Herrenschmidt | break;
|
406 | 6e270446 | Ben Herrenschmidt | } |
407 | 6e270446 | Ben Herrenschmidt | return size;
|
408 | 6e270446 | Ben Herrenschmidt | } |
409 | 6e270446 | Ben Herrenschmidt | |
410 | 6e270446 | Ben Herrenschmidt | static int vscsi_preprocess_desc(vscsi_req *req) |
411 | 6e270446 | Ben Herrenschmidt | { |
412 | 6e270446 | Ben Herrenschmidt | struct srp_cmd *cmd = &req->iu.srp.cmd;
|
413 | 6e270446 | Ben Herrenschmidt | int offset, i;
|
414 | 6e270446 | Ben Herrenschmidt | |
415 | 6e270446 | Ben Herrenschmidt | offset = cmd->add_cdb_len & ~3;
|
416 | 6e270446 | Ben Herrenschmidt | |
417 | 6e270446 | Ben Herrenschmidt | if (req->writing) {
|
418 | 6e270446 | Ben Herrenschmidt | req->dma_fmt = cmd->buf_fmt >> 4;
|
419 | 6e270446 | Ben Herrenschmidt | } else {
|
420 | 6e270446 | Ben Herrenschmidt | offset += data_out_desc_size(cmd); |
421 | 6e270446 | Ben Herrenschmidt | req->dma_fmt = cmd->buf_fmt & ((1U << 4) - 1); |
422 | 6e270446 | Ben Herrenschmidt | } |
423 | 6e270446 | Ben Herrenschmidt | |
424 | 6e270446 | Ben Herrenschmidt | switch (req->dma_fmt) {
|
425 | 6e270446 | Ben Herrenschmidt | case SRP_NO_DATA_DESC:
|
426 | 6e270446 | Ben Herrenschmidt | break;
|
427 | 6e270446 | Ben Herrenschmidt | case SRP_DATA_DESC_DIRECT:
|
428 | 6e270446 | Ben Herrenschmidt | req->cur_desc = (struct srp_direct_buf *)(cmd->add_data + offset);
|
429 | 6e270446 | Ben Herrenschmidt | req->total_desc = req->local_desc = 1;
|
430 | 6e270446 | Ben Herrenschmidt | vscsi_swap_desc(req->cur_desc); |
431 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: using direct RDMA %s, 0x%x bytes MD: 0x%llx\n",
|
432 | 6e270446 | Ben Herrenschmidt | req->writing ? "write" : "read", |
433 | 6e270446 | Ben Herrenschmidt | req->cur_desc->len, (unsigned long long)req->cur_desc->va); |
434 | 6e270446 | Ben Herrenschmidt | break;
|
435 | 6e270446 | Ben Herrenschmidt | case SRP_DATA_DESC_INDIRECT:
|
436 | 6e270446 | Ben Herrenschmidt | req->ind_desc = (struct srp_indirect_buf *)(cmd->add_data + offset);
|
437 | 6e270446 | Ben Herrenschmidt | vscsi_swap_desc(&req->ind_desc->table_desc); |
438 | 6e270446 | Ben Herrenschmidt | req->total_desc = req->ind_desc->table_desc.len / |
439 | 6e270446 | Ben Herrenschmidt | sizeof(struct srp_direct_buf); |
440 | 6e270446 | Ben Herrenschmidt | req->local_desc = req->writing ? cmd->data_out_desc_cnt : |
441 | 6e270446 | Ben Herrenschmidt | cmd->data_in_desc_cnt; |
442 | 6e270446 | Ben Herrenschmidt | for (i = 0; i < req->local_desc; i++) { |
443 | 6e270446 | Ben Herrenschmidt | vscsi_swap_desc(&req->ind_desc->desc_list[i]); |
444 | 6e270446 | Ben Herrenschmidt | } |
445 | 6e270446 | Ben Herrenschmidt | req->cur_desc = req->local_desc ? &req->ind_desc->desc_list[0] : NULL; |
446 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: using indirect RDMA %s, 0x%x bytes %d descs "
|
447 | 6e270446 | Ben Herrenschmidt | "(%d local) VA: 0x%llx\n",
|
448 | 6e270446 | Ben Herrenschmidt | req->writing ? "read" : "write", |
449 | 6e270446 | Ben Herrenschmidt | be32_to_cpu(req->ind_desc->len), |
450 | 6e270446 | Ben Herrenschmidt | req->total_desc, req->local_desc, |
451 | 6e270446 | Ben Herrenschmidt | (unsigned long long)req->ind_desc->table_desc.va); |
452 | 6e270446 | Ben Herrenschmidt | break;
|
453 | 6e270446 | Ben Herrenschmidt | default:
|
454 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, |
455 | 6e270446 | Ben Herrenschmidt | "vscsi_preprocess_desc: Unknown format %x\n", req->dma_fmt);
|
456 | 6e270446 | Ben Herrenschmidt | return -1; |
457 | 6e270446 | Ben Herrenschmidt | } |
458 | 6e270446 | Ben Herrenschmidt | |
459 | 6e270446 | Ben Herrenschmidt | return 0; |
460 | 6e270446 | Ben Herrenschmidt | } |
461 | 6e270446 | Ben Herrenschmidt | |
462 | 6e270446 | Ben Herrenschmidt | /* Callback to indicate that the SCSI layer has completed a transfer. */
|
463 | aba1f023 | Paolo Bonzini | static void vscsi_transfer_data(SCSIRequest *sreq, uint32_t len) |
464 | 6e270446 | Ben Herrenschmidt | { |
465 | 5c6c0e51 | Hannes Reinecke | VSCSIState *s = DO_UPCAST(VSCSIState, vdev.qdev, sreq->bus->qbus.parent); |
466 | c5bf71a9 | Hannes Reinecke | vscsi_req *req = sreq->hba_private; |
467 | 6e270446 | Ben Herrenschmidt | uint8_t *buf; |
468 | aba1f023 | Paolo Bonzini | int rc = 0; |
469 | 6e270446 | Ben Herrenschmidt | |
470 | aba1f023 | Paolo Bonzini | dprintf("VSCSI: SCSI xfer complete tag=0x%x len=0x%x, req=%p\n",
|
471 | aba1f023 | Paolo Bonzini | sreq->tag, len, req); |
472 | 6e270446 | Ben Herrenschmidt | if (req == NULL) { |
473 | 5c6c0e51 | Hannes Reinecke | fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag);
|
474 | 6e270446 | Ben Herrenschmidt | return;
|
475 | 6e270446 | Ben Herrenschmidt | } |
476 | 6e270446 | Ben Herrenschmidt | |
477 | aba1f023 | Paolo Bonzini | if (len) {
|
478 | 0c34459b | Paolo Bonzini | buf = scsi_req_get_buf(sreq); |
479 | aba1f023 | Paolo Bonzini | rc = vscsi_srp_transfer_data(s, req, req->writing, buf, len); |
480 | 6e270446 | Ben Herrenschmidt | } |
481 | 6e270446 | Ben Herrenschmidt | if (rc < 0) { |
482 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "VSCSI: RDMA error rc=%d!\n", rc);
|
483 | 6e270446 | Ben Herrenschmidt | vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); |
484 | 19d110ab | Paolo Bonzini | scsi_req_abort(req->sreq, CHECK_CONDITION); |
485 | 6e270446 | Ben Herrenschmidt | return;
|
486 | 6e270446 | Ben Herrenschmidt | } |
487 | 6e270446 | Ben Herrenschmidt | |
488 | 6e270446 | Ben Herrenschmidt | /* Start next chunk */
|
489 | 6e270446 | Ben Herrenschmidt | req->data_len -= rc; |
490 | ad3376cc | Paolo Bonzini | scsi_req_continue(sreq); |
491 | 6e270446 | Ben Herrenschmidt | } |
492 | 6e270446 | Ben Herrenschmidt | |
493 | c6df7102 | Paolo Bonzini | /* Callback to indicate that the SCSI layer has completed a transfer. */
|
494 | 01e95455 | Paolo Bonzini | static void vscsi_command_complete(SCSIRequest *sreq, uint32_t status, size_t resid) |
495 | c6df7102 | Paolo Bonzini | { |
496 | c6df7102 | Paolo Bonzini | VSCSIState *s = DO_UPCAST(VSCSIState, vdev.qdev, sreq->bus->qbus.parent); |
497 | c5bf71a9 | Hannes Reinecke | vscsi_req *req = sreq->hba_private; |
498 | c6df7102 | Paolo Bonzini | int32_t res_in = 0, res_out = 0; |
499 | c6df7102 | Paolo Bonzini | |
500 | aba1f023 | Paolo Bonzini | dprintf("VSCSI: SCSI cmd complete, r=0x%x tag=0x%x status=0x%x, req=%p\n",
|
501 | aba1f023 | Paolo Bonzini | reason, sreq->tag, status, req); |
502 | c6df7102 | Paolo Bonzini | if (req == NULL) { |
503 | c6df7102 | Paolo Bonzini | fprintf(stderr, "VSCSI: Can't find request for tag 0x%x\n", sreq->tag);
|
504 | c6df7102 | Paolo Bonzini | return;
|
505 | c6df7102 | Paolo Bonzini | } |
506 | c6df7102 | Paolo Bonzini | |
507 | 05751d3f | Paolo Bonzini | if (status == CHECK_CONDITION) {
|
508 | 05751d3f | Paolo Bonzini | req->senselen = scsi_req_get_sense(req->sreq, req->sense, |
509 | 05751d3f | Paolo Bonzini | sizeof(req->sense));
|
510 | 05751d3f | Paolo Bonzini | dprintf("VSCSI: Sense data, %d bytes:\n", len);
|
511 | 05751d3f | Paolo Bonzini | dprintf(" %02x %02x %02x %02x %02x %02x %02x %02x\n",
|
512 | 05751d3f | Paolo Bonzini | req->sense[0], req->sense[1], req->sense[2], req->sense[3], |
513 | 05751d3f | Paolo Bonzini | req->sense[4], req->sense[5], req->sense[6], req->sense[7]); |
514 | 05751d3f | Paolo Bonzini | dprintf(" %02x %02x %02x %02x %02x %02x %02x %02x\n",
|
515 | 05751d3f | Paolo Bonzini | req->sense[8], req->sense[9], req->sense[10], req->sense[11], |
516 | 05751d3f | Paolo Bonzini | req->sense[12], req->sense[13], req->sense[14], req->sense[15]); |
517 | c6df7102 | Paolo Bonzini | } |
518 | c6df7102 | Paolo Bonzini | |
519 | 05751d3f | Paolo Bonzini | dprintf("VSCSI: Command complete err=%d\n", status);
|
520 | 05751d3f | Paolo Bonzini | if (status == 0) { |
521 | 05751d3f | Paolo Bonzini | /* We handle overflows, not underflows for normal commands,
|
522 | 05751d3f | Paolo Bonzini | * but hopefully nobody cares
|
523 | 05751d3f | Paolo Bonzini | */
|
524 | 05751d3f | Paolo Bonzini | if (req->writing) {
|
525 | 05751d3f | Paolo Bonzini | res_out = req->data_len; |
526 | 05751d3f | Paolo Bonzini | } else {
|
527 | 05751d3f | Paolo Bonzini | res_in = req->data_len; |
528 | c6df7102 | Paolo Bonzini | } |
529 | c6df7102 | Paolo Bonzini | } |
530 | 05751d3f | Paolo Bonzini | vscsi_send_rsp(s, req, status, res_in, res_out); |
531 | c5bf71a9 | Hannes Reinecke | vscsi_put_req(req); |
532 | c6df7102 | Paolo Bonzini | } |
533 | c6df7102 | Paolo Bonzini | |
534 | 94d3f98a | Paolo Bonzini | static void vscsi_request_cancelled(SCSIRequest *sreq) |
535 | 94d3f98a | Paolo Bonzini | { |
536 | c5bf71a9 | Hannes Reinecke | vscsi_req *req = sreq->hba_private; |
537 | 94d3f98a | Paolo Bonzini | |
538 | c5bf71a9 | Hannes Reinecke | vscsi_put_req(req); |
539 | 94d3f98a | Paolo Bonzini | } |
540 | 94d3f98a | Paolo Bonzini | |
541 | 6e270446 | Ben Herrenschmidt | static void vscsi_process_login(VSCSIState *s, vscsi_req *req) |
542 | 6e270446 | Ben Herrenschmidt | { |
543 | 6e270446 | Ben Herrenschmidt | union viosrp_iu *iu = &req->iu;
|
544 | 6e270446 | Ben Herrenschmidt | struct srp_login_rsp *rsp = &iu->srp.login_rsp;
|
545 | 6e270446 | Ben Herrenschmidt | uint64_t tag = iu->srp.rsp.tag; |
546 | 6e270446 | Ben Herrenschmidt | |
547 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: Got login, sendin response !\n");
|
548 | 6e270446 | Ben Herrenschmidt | |
549 | 6e270446 | Ben Herrenschmidt | /* TODO handle case that requested size is wrong and
|
550 | 6e270446 | Ben Herrenschmidt | * buffer format is wrong
|
551 | 6e270446 | Ben Herrenschmidt | */
|
552 | 6e270446 | Ben Herrenschmidt | memset(iu, 0, sizeof(struct srp_login_rsp)); |
553 | 6e270446 | Ben Herrenschmidt | rsp->opcode = SRP_LOGIN_RSP; |
554 | 6e270446 | Ben Herrenschmidt | /* Don't advertise quite as many request as we support to
|
555 | 6e270446 | Ben Herrenschmidt | * keep room for management stuff etc...
|
556 | 6e270446 | Ben Herrenschmidt | */
|
557 | 6e270446 | Ben Herrenschmidt | rsp->req_lim_delta = cpu_to_be32(VSCSI_REQ_LIMIT-2);
|
558 | 6e270446 | Ben Herrenschmidt | rsp->tag = tag; |
559 | 6e270446 | Ben Herrenschmidt | rsp->max_it_iu_len = cpu_to_be32(sizeof(union srp_iu)); |
560 | 6e270446 | Ben Herrenschmidt | rsp->max_ti_iu_len = cpu_to_be32(sizeof(union srp_iu)); |
561 | 6e270446 | Ben Herrenschmidt | /* direct and indirect */
|
562 | 6e270446 | Ben Herrenschmidt | rsp->buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT); |
563 | 6e270446 | Ben Herrenschmidt | |
564 | 6e270446 | Ben Herrenschmidt | vscsi_send_iu(s, req, sizeof(*rsp), VIOSRP_SRP_FORMAT);
|
565 | 6e270446 | Ben Herrenschmidt | } |
566 | 6e270446 | Ben Herrenschmidt | |
567 | 6e270446 | Ben Herrenschmidt | static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req) |
568 | 6e270446 | Ben Herrenschmidt | { |
569 | 6e270446 | Ben Herrenschmidt | uint8_t *cdb = req->iu.srp.cmd.cdb; |
570 | 6e270446 | Ben Herrenschmidt | uint8_t resp_data[36];
|
571 | 6e270446 | Ben Herrenschmidt | int rc, len, alen;
|
572 | 6e270446 | Ben Herrenschmidt | |
573 | 6e270446 | Ben Herrenschmidt | /* We dont do EVPD. Also check that page_code is 0 */
|
574 | 6e270446 | Ben Herrenschmidt | if ((cdb[1] & 0x01) || (cdb[1] & 0x01) || cdb[2] != 0) { |
575 | 6e270446 | Ben Herrenschmidt | /* Send INVALID FIELD IN CDB */
|
576 | 6e270446 | Ben Herrenschmidt | vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0); |
577 | 6e270446 | Ben Herrenschmidt | vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); |
578 | 6e270446 | Ben Herrenschmidt | return;
|
579 | 6e270446 | Ben Herrenschmidt | } |
580 | 6e270446 | Ben Herrenschmidt | alen = cdb[3];
|
581 | 6e270446 | Ben Herrenschmidt | alen = (alen << 8) | cdb[4]; |
582 | 6e270446 | Ben Herrenschmidt | len = MIN(alen, 36);
|
583 | 6e270446 | Ben Herrenschmidt | |
584 | 6e270446 | Ben Herrenschmidt | /* Fake up inquiry using PQ=3 */
|
585 | 6e270446 | Ben Herrenschmidt | memset(resp_data, 0, 36); |
586 | 6e270446 | Ben Herrenschmidt | resp_data[0] = 0x7f; /* Not capable of supporting a device here */ |
587 | 6e270446 | Ben Herrenschmidt | resp_data[2] = 0x06; /* SPS-4 */ |
588 | 6e270446 | Ben Herrenschmidt | resp_data[3] = 0x02; /* Resp data format */ |
589 | 6e270446 | Ben Herrenschmidt | resp_data[4] = 36 - 5; /* Additional length */ |
590 | 6e270446 | Ben Herrenschmidt | resp_data[7] = 0x10; /* Sync transfers */ |
591 | 6e270446 | Ben Herrenschmidt | memcpy(&resp_data[16], "QEMU EMPTY ", 16); |
592 | 6e270446 | Ben Herrenschmidt | memcpy(&resp_data[8], "QEMU ", 8); |
593 | 6e270446 | Ben Herrenschmidt | |
594 | 6e270446 | Ben Herrenschmidt | req->writing = 0;
|
595 | 6e270446 | Ben Herrenschmidt | vscsi_preprocess_desc(req); |
596 | 6e270446 | Ben Herrenschmidt | rc = vscsi_srp_transfer_data(s, req, 0, resp_data, len);
|
597 | 6e270446 | Ben Herrenschmidt | if (rc < 0) { |
598 | 6e270446 | Ben Herrenschmidt | vscsi_makeup_sense(s, req, HARDWARE_ERROR, 0, 0); |
599 | 6e270446 | Ben Herrenschmidt | vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); |
600 | 6e270446 | Ben Herrenschmidt | } else {
|
601 | 6e270446 | Ben Herrenschmidt | vscsi_send_rsp(s, req, 0, 36 - rc, 0); |
602 | 6e270446 | Ben Herrenschmidt | } |
603 | 6e270446 | Ben Herrenschmidt | } |
604 | 6e270446 | Ben Herrenschmidt | |
605 | 6e270446 | Ben Herrenschmidt | static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req) |
606 | 6e270446 | Ben Herrenschmidt | { |
607 | 6e270446 | Ben Herrenschmidt | union srp_iu *srp = &req->iu.srp;
|
608 | 6e270446 | Ben Herrenschmidt | SCSIDevice *sdev; |
609 | f48a7a6e | Paolo Bonzini | int n, lun;
|
610 | 6e270446 | Ben Herrenschmidt | |
611 | f48a7a6e | Paolo Bonzini | sdev = vscsi_device_find(&s->bus, be64_to_cpu(srp->cmd.lun), &lun); |
612 | 6e270446 | Ben Herrenschmidt | if (!sdev) {
|
613 | f48a7a6e | Paolo Bonzini | dprintf("VSCSI: Command for lun %08" PRIx64 " with no drive\n", be64_to_cpu(srp->cmd.lun)); |
614 | 6e270446 | Ben Herrenschmidt | if (srp->cmd.cdb[0] == INQUIRY) { |
615 | 6e270446 | Ben Herrenschmidt | vscsi_inquiry_no_target(s, req); |
616 | 6e270446 | Ben Herrenschmidt | } else {
|
617 | 6e270446 | Ben Herrenschmidt | vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x24, 0x00); |
618 | 6e270446 | Ben Herrenschmidt | vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); |
619 | 6e270446 | Ben Herrenschmidt | } return 1; |
620 | 6e270446 | Ben Herrenschmidt | } |
621 | 6e270446 | Ben Herrenschmidt | |
622 | 6e270446 | Ben Herrenschmidt | req->lun = lun; |
623 | c39ce112 | Paolo Bonzini | req->sreq = scsi_req_new(sdev, req->qtag, lun, srp->cmd.cdb, req); |
624 | c39ce112 | Paolo Bonzini | n = scsi_req_enqueue(req->sreq); |
625 | 6e270446 | Ben Herrenschmidt | |
626 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: Queued command tag 0x%x CMD 0x%x ID %d LUN %d ret: %d\n",
|
627 | 6e270446 | Ben Herrenschmidt | req->qtag, srp->cmd.cdb[0], id, lun, n);
|
628 | 6e270446 | Ben Herrenschmidt | |
629 | 6e270446 | Ben Herrenschmidt | if (n) {
|
630 | 6e270446 | Ben Herrenschmidt | /* Transfer direction must be set before preprocessing the
|
631 | 6e270446 | Ben Herrenschmidt | * descriptors
|
632 | 6e270446 | Ben Herrenschmidt | */
|
633 | 6e270446 | Ben Herrenschmidt | req->writing = (n < 1);
|
634 | 6e270446 | Ben Herrenschmidt | |
635 | 6e270446 | Ben Herrenschmidt | /* Preprocess RDMA descriptors */
|
636 | 6e270446 | Ben Herrenschmidt | vscsi_preprocess_desc(req); |
637 | 6e270446 | Ben Herrenschmidt | |
638 | ad3376cc | Paolo Bonzini | /* Get transfer direction and initiate transfer */
|
639 | ad3376cc | Paolo Bonzini | if (n > 0) { |
640 | ad3376cc | Paolo Bonzini | req->data_len = n; |
641 | ad3376cc | Paolo Bonzini | } else if (n < 0) { |
642 | ad3376cc | Paolo Bonzini | req->data_len = -n; |
643 | ad3376cc | Paolo Bonzini | } |
644 | ad3376cc | Paolo Bonzini | scsi_req_continue(req->sreq); |
645 | 6e270446 | Ben Herrenschmidt | } |
646 | 6e270446 | Ben Herrenschmidt | /* Don't touch req here, it may have been recycled already */
|
647 | 6e270446 | Ben Herrenschmidt | |
648 | 6e270446 | Ben Herrenschmidt | return 0; |
649 | 6e270446 | Ben Herrenschmidt | } |
650 | 6e270446 | Ben Herrenschmidt | |
651 | 6e270446 | Ben Herrenschmidt | static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req) |
652 | 6e270446 | Ben Herrenschmidt | { |
653 | 6e270446 | Ben Herrenschmidt | union viosrp_iu *iu = &req->iu;
|
654 | 6e270446 | Ben Herrenschmidt | int fn;
|
655 | 6e270446 | Ben Herrenschmidt | |
656 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_process_tsk_mgmt %02x\n",
|
657 | 6e270446 | Ben Herrenschmidt | iu->srp.tsk_mgmt.tsk_mgmt_func); |
658 | 6e270446 | Ben Herrenschmidt | |
659 | 6e270446 | Ben Herrenschmidt | switch (iu->srp.tsk_mgmt.tsk_mgmt_func) {
|
660 | 6e270446 | Ben Herrenschmidt | #if 0 /* We really don't deal with these for now */
|
661 | 6e270446 | Ben Herrenschmidt | case SRP_TSK_ABORT_TASK:
|
662 | 6e270446 | Ben Herrenschmidt | fn = ABORT_TASK;
|
663 | 6e270446 | Ben Herrenschmidt | break;
|
664 | 6e270446 | Ben Herrenschmidt | case SRP_TSK_ABORT_TASK_SET:
|
665 | 6e270446 | Ben Herrenschmidt | fn = ABORT_TASK_SET;
|
666 | 6e270446 | Ben Herrenschmidt | break;
|
667 | 6e270446 | Ben Herrenschmidt | case SRP_TSK_CLEAR_TASK_SET:
|
668 | 6e270446 | Ben Herrenschmidt | fn = CLEAR_TASK_SET;
|
669 | 6e270446 | Ben Herrenschmidt | break;
|
670 | 6e270446 | Ben Herrenschmidt | case SRP_TSK_LUN_RESET:
|
671 | 6e270446 | Ben Herrenschmidt | fn = LOGICAL_UNIT_RESET;
|
672 | 6e270446 | Ben Herrenschmidt | break;
|
673 | 6e270446 | Ben Herrenschmidt | case SRP_TSK_CLEAR_ACA:
|
674 | 6e270446 | Ben Herrenschmidt | fn = CLEAR_ACA;
|
675 | 6e270446 | Ben Herrenschmidt | break;
|
676 | 6e270446 | Ben Herrenschmidt | #endif
|
677 | 6e270446 | Ben Herrenschmidt | default:
|
678 | 6e270446 | Ben Herrenschmidt | fn = 0;
|
679 | 6e270446 | Ben Herrenschmidt | } |
680 | 6e270446 | Ben Herrenschmidt | if (fn) {
|
681 | 6e270446 | Ben Herrenschmidt | /* XXX Send/Handle target task management */
|
682 | 6e270446 | Ben Herrenschmidt | ; |
683 | 6e270446 | Ben Herrenschmidt | } else {
|
684 | 6e270446 | Ben Herrenschmidt | vscsi_makeup_sense(s, req, ILLEGAL_REQUEST, 0x20, 0); |
685 | 6e270446 | Ben Herrenschmidt | vscsi_send_rsp(s, req, CHECK_CONDITION, 0, 0); |
686 | 6e270446 | Ben Herrenschmidt | } |
687 | 6e270446 | Ben Herrenschmidt | return !fn;
|
688 | 6e270446 | Ben Herrenschmidt | } |
689 | 6e270446 | Ben Herrenschmidt | |
690 | 6e270446 | Ben Herrenschmidt | static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req) |
691 | 6e270446 | Ben Herrenschmidt | { |
692 | 6e270446 | Ben Herrenschmidt | union srp_iu *srp = &req->iu.srp;
|
693 | 6e270446 | Ben Herrenschmidt | int done = 1; |
694 | 6e270446 | Ben Herrenschmidt | uint8_t opcode = srp->rsp.opcode; |
695 | 6e270446 | Ben Herrenschmidt | |
696 | 6e270446 | Ben Herrenschmidt | switch (opcode) {
|
697 | 6e270446 | Ben Herrenschmidt | case SRP_LOGIN_REQ:
|
698 | 6e270446 | Ben Herrenschmidt | vscsi_process_login(s, req); |
699 | 6e270446 | Ben Herrenschmidt | break;
|
700 | 6e270446 | Ben Herrenschmidt | case SRP_TSK_MGMT:
|
701 | 6e270446 | Ben Herrenschmidt | done = vscsi_process_tsk_mgmt(s, req); |
702 | 6e270446 | Ben Herrenschmidt | break;
|
703 | 6e270446 | Ben Herrenschmidt | case SRP_CMD:
|
704 | 6e270446 | Ben Herrenschmidt | done = vscsi_queue_cmd(s, req); |
705 | 6e270446 | Ben Herrenschmidt | break;
|
706 | 6e270446 | Ben Herrenschmidt | case SRP_LOGIN_RSP:
|
707 | 6e270446 | Ben Herrenschmidt | case SRP_I_LOGOUT:
|
708 | 6e270446 | Ben Herrenschmidt | case SRP_T_LOGOUT:
|
709 | 6e270446 | Ben Herrenschmidt | case SRP_RSP:
|
710 | 6e270446 | Ben Herrenschmidt | case SRP_CRED_REQ:
|
711 | 6e270446 | Ben Herrenschmidt | case SRP_CRED_RSP:
|
712 | 6e270446 | Ben Herrenschmidt | case SRP_AER_REQ:
|
713 | 6e270446 | Ben Herrenschmidt | case SRP_AER_RSP:
|
714 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "VSCSI: Unsupported opcode %02x\n", opcode);
|
715 | 6e270446 | Ben Herrenschmidt | break;
|
716 | 6e270446 | Ben Herrenschmidt | default:
|
717 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "VSCSI: Unknown type %02x\n", opcode);
|
718 | 6e270446 | Ben Herrenschmidt | } |
719 | 6e270446 | Ben Herrenschmidt | |
720 | 6e270446 | Ben Herrenschmidt | return done;
|
721 | 6e270446 | Ben Herrenschmidt | } |
722 | 6e270446 | Ben Herrenschmidt | |
723 | 6e270446 | Ben Herrenschmidt | static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req) |
724 | 6e270446 | Ben Herrenschmidt | { |
725 | 6e270446 | Ben Herrenschmidt | struct viosrp_adapter_info *sinfo;
|
726 | 6e270446 | Ben Herrenschmidt | struct mad_adapter_info_data info;
|
727 | 6e270446 | Ben Herrenschmidt | int rc;
|
728 | 6e270446 | Ben Herrenschmidt | |
729 | 6e270446 | Ben Herrenschmidt | sinfo = &req->iu.mad.adapter_info; |
730 | 6e270446 | Ben Herrenschmidt | |
731 | 6e270446 | Ben Herrenschmidt | #if 0 /* What for ? */
|
732 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer),
|
733 | 6e270446 | Ben Herrenschmidt | &info, be16_to_cpu(sinfo->common.length));
|
734 | 6e270446 | Ben Herrenschmidt | if (rc) {
|
735 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_send_adapter_info: DMA read failure !\n");
|
736 | 6e270446 | Ben Herrenschmidt | }
|
737 | 6e270446 | Ben Herrenschmidt | #endif
|
738 | 6e270446 | Ben Herrenschmidt | memset(&info, 0, sizeof(info)); |
739 | 6e270446 | Ben Herrenschmidt | strcpy(info.srp_version, SRP_VERSION); |
740 | 6e270446 | Ben Herrenschmidt | strncpy(info.partition_name, "qemu", sizeof("qemu")); |
741 | 6e270446 | Ben Herrenschmidt | info.partition_number = cpu_to_be32(0);
|
742 | 6e270446 | Ben Herrenschmidt | info.mad_version = cpu_to_be32(1);
|
743 | 6e270446 | Ben Herrenschmidt | info.os_type = cpu_to_be32(2);
|
744 | 6e270446 | Ben Herrenschmidt | info.port_max_txu[0] = cpu_to_be32(VSCSI_MAX_SECTORS << 9); |
745 | 6e270446 | Ben Herrenschmidt | |
746 | ad0ebb91 | David Gibson | rc = spapr_vio_dma_write(&s->vdev, be64_to_cpu(sinfo->buffer), |
747 | 6e270446 | Ben Herrenschmidt | &info, be16_to_cpu(sinfo->common.length)); |
748 | 6e270446 | Ben Herrenschmidt | if (rc) {
|
749 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_send_adapter_info: DMA write failure !\n");
|
750 | 6e270446 | Ben Herrenschmidt | } |
751 | 6e270446 | Ben Herrenschmidt | |
752 | 6e270446 | Ben Herrenschmidt | sinfo->common.status = rc ? cpu_to_be32(1) : 0; |
753 | 6e270446 | Ben Herrenschmidt | |
754 | 6e270446 | Ben Herrenschmidt | return vscsi_send_iu(s, req, sizeof(*sinfo), VIOSRP_MAD_FORMAT); |
755 | 6e270446 | Ben Herrenschmidt | } |
756 | 6e270446 | Ben Herrenschmidt | |
757 | 6e270446 | Ben Herrenschmidt | static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req) |
758 | 6e270446 | Ben Herrenschmidt | { |
759 | 6e270446 | Ben Herrenschmidt | union mad_iu *mad = &req->iu.mad;
|
760 | 6e270446 | Ben Herrenschmidt | |
761 | 6e270446 | Ben Herrenschmidt | switch (be32_to_cpu(mad->empty_iu.common.type)) {
|
762 | 6e270446 | Ben Herrenschmidt | case VIOSRP_EMPTY_IU_TYPE:
|
763 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "Unsupported EMPTY MAD IU\n");
|
764 | 6e270446 | Ben Herrenschmidt | break;
|
765 | 6e270446 | Ben Herrenschmidt | case VIOSRP_ERROR_LOG_TYPE:
|
766 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "Unsupported ERROR LOG MAD IU\n");
|
767 | 6e270446 | Ben Herrenschmidt | mad->error_log.common.status = cpu_to_be16(1);
|
768 | 6e270446 | Ben Herrenschmidt | vscsi_send_iu(s, req, sizeof(mad->error_log), VIOSRP_MAD_FORMAT);
|
769 | 6e270446 | Ben Herrenschmidt | break;
|
770 | 6e270446 | Ben Herrenschmidt | case VIOSRP_ADAPTER_INFO_TYPE:
|
771 | 6e270446 | Ben Herrenschmidt | vscsi_send_adapter_info(s, req); |
772 | 6e270446 | Ben Herrenschmidt | break;
|
773 | 6e270446 | Ben Herrenschmidt | case VIOSRP_HOST_CONFIG_TYPE:
|
774 | 6e270446 | Ben Herrenschmidt | mad->host_config.common.status = cpu_to_be16(1);
|
775 | 6e270446 | Ben Herrenschmidt | vscsi_send_iu(s, req, sizeof(mad->host_config), VIOSRP_MAD_FORMAT);
|
776 | 6e270446 | Ben Herrenschmidt | break;
|
777 | 6e270446 | Ben Herrenschmidt | default:
|
778 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "VSCSI: Unknown MAD type %02x\n",
|
779 | 6e270446 | Ben Herrenschmidt | be32_to_cpu(mad->empty_iu.common.type)); |
780 | 6e270446 | Ben Herrenschmidt | } |
781 | 6e270446 | Ben Herrenschmidt | |
782 | 6e270446 | Ben Herrenschmidt | return 1; |
783 | 6e270446 | Ben Herrenschmidt | } |
784 | 6e270446 | Ben Herrenschmidt | |
785 | 6e270446 | Ben Herrenschmidt | static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq) |
786 | 6e270446 | Ben Herrenschmidt | { |
787 | 6e270446 | Ben Herrenschmidt | vscsi_req *req; |
788 | 6e270446 | Ben Herrenschmidt | int done;
|
789 | 6e270446 | Ben Herrenschmidt | |
790 | 6e270446 | Ben Herrenschmidt | req = vscsi_get_req(s); |
791 | 6e270446 | Ben Herrenschmidt | if (req == NULL) { |
792 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "VSCSI: Failed to get a request !\n");
|
793 | 6e270446 | Ben Herrenschmidt | return;
|
794 | 6e270446 | Ben Herrenschmidt | } |
795 | 6e270446 | Ben Herrenschmidt | |
796 | 6e270446 | Ben Herrenschmidt | /* We only support a limited number of descriptors, we know
|
797 | 6e270446 | Ben Herrenschmidt | * the ibmvscsi driver uses up to 10 max, so it should fit
|
798 | 6e270446 | Ben Herrenschmidt | * in our 256 bytes IUs. If not we'll have to increase the size
|
799 | 6e270446 | Ben Herrenschmidt | * of the structure.
|
800 | 6e270446 | Ben Herrenschmidt | */
|
801 | 6e270446 | Ben Herrenschmidt | if (crq->s.IU_length > sizeof(union viosrp_iu)) { |
802 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "VSCSI: SRP IU too long (%d bytes) !\n",
|
803 | 6e270446 | Ben Herrenschmidt | crq->s.IU_length); |
804 | a4d8e8da | Benjamin Herrenschmidt | vscsi_put_req(req); |
805 | 6e270446 | Ben Herrenschmidt | return;
|
806 | 6e270446 | Ben Herrenschmidt | } |
807 | 6e270446 | Ben Herrenschmidt | |
808 | 6e270446 | Ben Herrenschmidt | /* XXX Handle failure differently ? */
|
809 | ad0ebb91 | David Gibson | if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->iu,
|
810 | 6e270446 | Ben Herrenschmidt | crq->s.IU_length)) { |
811 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_got_payload: DMA read failure !\n");
|
812 | a4d8e8da | Benjamin Herrenschmidt | vscsi_put_req(req); |
813 | a4d8e8da | Benjamin Herrenschmidt | return;
|
814 | 6e270446 | Ben Herrenschmidt | } |
815 | 6e270446 | Ben Herrenschmidt | memcpy(&req->crq, crq, sizeof(vscsi_crq));
|
816 | 6e270446 | Ben Herrenschmidt | |
817 | 6e270446 | Ben Herrenschmidt | if (crq->s.format == VIOSRP_MAD_FORMAT) {
|
818 | 6e270446 | Ben Herrenschmidt | done = vscsi_handle_mad_req(s, req); |
819 | 6e270446 | Ben Herrenschmidt | } else {
|
820 | 6e270446 | Ben Herrenschmidt | done = vscsi_handle_srp_req(s, req); |
821 | 6e270446 | Ben Herrenschmidt | } |
822 | 6e270446 | Ben Herrenschmidt | |
823 | 6e270446 | Ben Herrenschmidt | if (done) {
|
824 | c5bf71a9 | Hannes Reinecke | vscsi_put_req(req); |
825 | 6e270446 | Ben Herrenschmidt | } |
826 | 6e270446 | Ben Herrenschmidt | } |
827 | 6e270446 | Ben Herrenschmidt | |
828 | 6e270446 | Ben Herrenschmidt | |
829 | 6e270446 | Ben Herrenschmidt | static int vscsi_do_crq(struct VIOsPAPRDevice *dev, uint8_t *crq_data) |
830 | 6e270446 | Ben Herrenschmidt | { |
831 | 6e270446 | Ben Herrenschmidt | VSCSIState *s = DO_UPCAST(VSCSIState, vdev, dev); |
832 | 6e270446 | Ben Herrenschmidt | vscsi_crq crq; |
833 | 6e270446 | Ben Herrenschmidt | |
834 | 6e270446 | Ben Herrenschmidt | memcpy(crq.raw, crq_data, 16);
|
835 | 6e270446 | Ben Herrenschmidt | crq.s.timeout = be16_to_cpu(crq.s.timeout); |
836 | 6e270446 | Ben Herrenschmidt | crq.s.IU_length = be16_to_cpu(crq.s.IU_length); |
837 | 6e270446 | Ben Herrenschmidt | crq.s.IU_data_ptr = be64_to_cpu(crq.s.IU_data_ptr); |
838 | 6e270446 | Ben Herrenschmidt | |
839 | 6e270446 | Ben Herrenschmidt | dprintf("VSCSI: do_crq %02x %02x ...\n", crq.raw[0], crq.raw[1]); |
840 | 6e270446 | Ben Herrenschmidt | |
841 | 6e270446 | Ben Herrenschmidt | switch (crq.s.valid) {
|
842 | 6e270446 | Ben Herrenschmidt | case 0xc0: /* Init command/response */ |
843 | 6e270446 | Ben Herrenschmidt | |
844 | 6e270446 | Ben Herrenschmidt | /* Respond to initialization request */
|
845 | 6e270446 | Ben Herrenschmidt | if (crq.s.format == 0x01) { |
846 | 6e270446 | Ben Herrenschmidt | memset(crq.raw, 0, 16); |
847 | 6e270446 | Ben Herrenschmidt | crq.s.valid = 0xc0;
|
848 | 6e270446 | Ben Herrenschmidt | crq.s.format = 0x02;
|
849 | 6e270446 | Ben Herrenschmidt | spapr_vio_send_crq(dev, crq.raw); |
850 | 6e270446 | Ben Herrenschmidt | } |
851 | 6e270446 | Ben Herrenschmidt | |
852 | 6e270446 | Ben Herrenschmidt | /* Note that in hotplug cases, we might get a 0x02
|
853 | 6e270446 | Ben Herrenschmidt | * as a result of us emitting the init request
|
854 | 6e270446 | Ben Herrenschmidt | */
|
855 | 6e270446 | Ben Herrenschmidt | |
856 | 6e270446 | Ben Herrenschmidt | break;
|
857 | 6e270446 | Ben Herrenschmidt | case 0xff: /* Link event */ |
858 | 6e270446 | Ben Herrenschmidt | |
859 | 6e270446 | Ben Herrenschmidt | /* Not handled for now */
|
860 | 6e270446 | Ben Herrenschmidt | |
861 | 6e270446 | Ben Herrenschmidt | break;
|
862 | 6e270446 | Ben Herrenschmidt | case 0x80: /* Payloads */ |
863 | 6e270446 | Ben Herrenschmidt | switch (crq.s.format) {
|
864 | 6e270446 | Ben Herrenschmidt | case VIOSRP_SRP_FORMAT: /* AKA VSCSI request */ |
865 | 6e270446 | Ben Herrenschmidt | case VIOSRP_MAD_FORMAT: /* AKA VSCSI response */ |
866 | 6e270446 | Ben Herrenschmidt | vscsi_got_payload(s, &crq); |
867 | 6e270446 | Ben Herrenschmidt | break;
|
868 | 6e270446 | Ben Herrenschmidt | case VIOSRP_OS400_FORMAT:
|
869 | 6e270446 | Ben Herrenschmidt | case VIOSRP_AIX_FORMAT:
|
870 | 6e270446 | Ben Herrenschmidt | case VIOSRP_LINUX_FORMAT:
|
871 | 6e270446 | Ben Herrenschmidt | case VIOSRP_INLINE_FORMAT:
|
872 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_do_srq: Unsupported payload format %02x\n",
|
873 | 6e270446 | Ben Herrenschmidt | crq.s.format); |
874 | 6e270446 | Ben Herrenschmidt | break;
|
875 | 6e270446 | Ben Herrenschmidt | default:
|
876 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_do_srq: Unknown payload format %02x\n",
|
877 | 6e270446 | Ben Herrenschmidt | crq.s.format); |
878 | 6e270446 | Ben Herrenschmidt | } |
879 | 6e270446 | Ben Herrenschmidt | break;
|
880 | 6e270446 | Ben Herrenschmidt | default:
|
881 | 6e270446 | Ben Herrenschmidt | fprintf(stderr, "vscsi_do_crq: unknown CRQ %02x %02x ...\n",
|
882 | 6e270446 | Ben Herrenschmidt | crq.raw[0], crq.raw[1]); |
883 | 6e270446 | Ben Herrenschmidt | }; |
884 | 6e270446 | Ben Herrenschmidt | |
885 | 6e270446 | Ben Herrenschmidt | return 0; |
886 | 6e270446 | Ben Herrenschmidt | } |
887 | 6e270446 | Ben Herrenschmidt | |
888 | afd4030c | Paolo Bonzini | static const struct SCSIBusInfo vscsi_scsi_info = { |
889 | afd4030c | Paolo Bonzini | .tcq = true,
|
890 | 0d3545e7 | Paolo Bonzini | .max_channel = 7, /* logical unit addressing format */ |
891 | 0d3545e7 | Paolo Bonzini | .max_target = 63,
|
892 | 7e0380b9 | Paolo Bonzini | .max_lun = 31,
|
893 | afd4030c | Paolo Bonzini | |
894 | c6df7102 | Paolo Bonzini | .transfer_data = vscsi_transfer_data, |
895 | 94d3f98a | Paolo Bonzini | .complete = vscsi_command_complete, |
896 | 94d3f98a | Paolo Bonzini | .cancel = vscsi_request_cancelled |
897 | cfdc1bb0 | Paolo Bonzini | }; |
898 | cfdc1bb0 | Paolo Bonzini | |
899 | 3cabba60 | David Gibson | static void spapr_vscsi_reset(VIOsPAPRDevice *dev) |
900 | 6e270446 | Ben Herrenschmidt | { |
901 | 6e270446 | Ben Herrenschmidt | VSCSIState *s = DO_UPCAST(VSCSIState, vdev, dev); |
902 | 6e270446 | Ben Herrenschmidt | int i;
|
903 | 6e270446 | Ben Herrenschmidt | |
904 | 6e270446 | Ben Herrenschmidt | memset(s->reqs, 0, sizeof(s->reqs)); |
905 | 6e270446 | Ben Herrenschmidt | for (i = 0; i < VSCSI_REQ_LIMIT; i++) { |
906 | 6e270446 | Ben Herrenschmidt | s->reqs[i].qtag = i; |
907 | 6e270446 | Ben Herrenschmidt | } |
908 | 3cabba60 | David Gibson | } |
909 | 3cabba60 | David Gibson | |
910 | 3cabba60 | David Gibson | static int spapr_vscsi_init(VIOsPAPRDevice *dev) |
911 | 3cabba60 | David Gibson | { |
912 | 3cabba60 | David Gibson | VSCSIState *s = DO_UPCAST(VSCSIState, vdev, dev); |
913 | 6e270446 | Ben Herrenschmidt | |
914 | 6e270446 | Ben Herrenschmidt | dev->crq.SendFunc = vscsi_do_crq; |
915 | 6e270446 | Ben Herrenschmidt | |
916 | afd4030c | Paolo Bonzini | scsi_bus_new(&s->bus, &dev->qdev, &vscsi_scsi_info); |
917 | 6e270446 | Ben Herrenschmidt | if (!dev->qdev.hotplugged) {
|
918 | 6e270446 | Ben Herrenschmidt | scsi_bus_legacy_handle_cmdline(&s->bus); |
919 | 6e270446 | Ben Herrenschmidt | } |
920 | 6e270446 | Ben Herrenschmidt | |
921 | 6e270446 | Ben Herrenschmidt | return 0; |
922 | 6e270446 | Ben Herrenschmidt | } |
923 | 6e270446 | Ben Herrenschmidt | |
924 | d601fac4 | David Gibson | void spapr_vscsi_create(VIOsPAPRBus *bus)
|
925 | 6e270446 | Ben Herrenschmidt | { |
926 | 6e270446 | Ben Herrenschmidt | DeviceState *dev; |
927 | 6e270446 | Ben Herrenschmidt | |
928 | 6e270446 | Ben Herrenschmidt | dev = qdev_create(&bus->bus, "spapr-vscsi");
|
929 | 6e270446 | Ben Herrenschmidt | |
930 | 6e270446 | Ben Herrenschmidt | qdev_init_nofail(dev); |
931 | 6e270446 | Ben Herrenschmidt | } |
932 | 6e270446 | Ben Herrenschmidt | |
933 | 6e270446 | Ben Herrenschmidt | static int spapr_vscsi_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off) |
934 | 6e270446 | Ben Herrenschmidt | { |
935 | 6e270446 | Ben Herrenschmidt | int ret;
|
936 | 6e270446 | Ben Herrenschmidt | |
937 | 6e270446 | Ben Herrenschmidt | ret = fdt_setprop_cell(fdt, node_off, "#address-cells", 2); |
938 | 6e270446 | Ben Herrenschmidt | if (ret < 0) { |
939 | 6e270446 | Ben Herrenschmidt | return ret;
|
940 | 6e270446 | Ben Herrenschmidt | } |
941 | 6e270446 | Ben Herrenschmidt | |
942 | 6e270446 | Ben Herrenschmidt | ret = fdt_setprop_cell(fdt, node_off, "#size-cells", 0); |
943 | 6e270446 | Ben Herrenschmidt | if (ret < 0) { |
944 | 6e270446 | Ben Herrenschmidt | return ret;
|
945 | 6e270446 | Ben Herrenschmidt | } |
946 | 6e270446 | Ben Herrenschmidt | |
947 | 6e270446 | Ben Herrenschmidt | return 0; |
948 | 6e270446 | Ben Herrenschmidt | } |
949 | 6e270446 | Ben Herrenschmidt | |
950 | 3954d33a | Anthony Liguori | static Property spapr_vscsi_properties[] = {
|
951 | ad0ebb91 | David Gibson | DEFINE_SPAPR_PROPERTIES(VSCSIState, vdev), |
952 | 3954d33a | Anthony Liguori | DEFINE_PROP_END_OF_LIST(), |
953 | 3954d33a | Anthony Liguori | }; |
954 | 3954d33a | Anthony Liguori | |
955 | 3954d33a | Anthony Liguori | static void spapr_vscsi_class_init(ObjectClass *klass, void *data) |
956 | 3954d33a | Anthony Liguori | { |
957 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
958 | 3954d33a | Anthony Liguori | VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); |
959 | 3954d33a | Anthony Liguori | |
960 | 3954d33a | Anthony Liguori | k->init = spapr_vscsi_init; |
961 | 3cabba60 | David Gibson | k->reset = spapr_vscsi_reset; |
962 | 3954d33a | Anthony Liguori | k->devnode = spapr_vscsi_devnode; |
963 | 3954d33a | Anthony Liguori | k->dt_name = "v-scsi";
|
964 | 3954d33a | Anthony Liguori | k->dt_type = "vscsi";
|
965 | 3954d33a | Anthony Liguori | k->dt_compatible = "IBM,v-scsi";
|
966 | 3954d33a | Anthony Liguori | k->signal_mask = 0x00000001;
|
967 | 39bffca2 | Anthony Liguori | dc->props = spapr_vscsi_properties; |
968 | ad0ebb91 | David Gibson | k->rtce_window_size = 0x10000000;
|
969 | 3954d33a | Anthony Liguori | } |
970 | 3954d33a | Anthony Liguori | |
971 | 39bffca2 | Anthony Liguori | static TypeInfo spapr_vscsi_info = {
|
972 | 39bffca2 | Anthony Liguori | .name = "spapr-vscsi",
|
973 | 39bffca2 | Anthony Liguori | .parent = TYPE_VIO_SPAPR_DEVICE, |
974 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(VSCSIState),
|
975 | 39bffca2 | Anthony Liguori | .class_init = spapr_vscsi_class_init, |
976 | 6e270446 | Ben Herrenschmidt | }; |
977 | 6e270446 | Ben Herrenschmidt | |
978 | 83f7d43a | Andreas Färber | static void spapr_vscsi_register_types(void) |
979 | 6e270446 | Ben Herrenschmidt | { |
980 | 39bffca2 | Anthony Liguori | type_register_static(&spapr_vscsi_info); |
981 | 6e270446 | Ben Herrenschmidt | } |
982 | 83f7d43a | Andreas Färber | |
983 | 83f7d43a | Andreas Färber | type_init(spapr_vscsi_register_types) |