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Commit | Line | Data |
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8d90ad90 DG |
1 | /* |
2 | * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator | |
3 | * | |
4 | * PAPR Inter-VM Logical Lan, aka ibmveth | |
5 | * | |
6 | * Copyright (c) 2010,2011 David Gibson, IBM Corporation. | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
24 | * THE SOFTWARE. | |
25 | * | |
26 | */ | |
0b8fa32f | 27 | |
0d75590d | 28 | #include "qemu/osdep.h" |
4771d756 | 29 | #include "cpu.h" |
03dd024f | 30 | #include "qemu/log.h" |
0b8fa32f | 31 | #include "qemu/module.h" |
1422e32d | 32 | #include "net/net.h" |
d6454270 | 33 | #include "migration/vmstate.h" |
0d09e41a PB |
34 | #include "hw/ppc/spapr.h" |
35 | #include "hw/ppc/spapr_vio.h" | |
a27bd6c7 | 36 | #include "hw/qdev-properties.h" |
ad4f62d0 | 37 | #include "sysemu/sysemu.h" |
e8bb33de | 38 | #include "trace.h" |
8d90ad90 DG |
39 | |
40 | #include <libfdt.h> | |
db1015e9 | 41 | #include "qom/object.h" |
8d90ad90 DG |
42 | |
43 | #define ETH_ALEN 6 | |
44 | #define MAX_PACKET_SIZE 65536 | |
45 | ||
831e8822 TH |
46 | /* Compatibility flags for migration */ |
47 | #define SPAPRVLAN_FLAG_RX_BUF_POOLS_BIT 0 | |
48 | #define SPAPRVLAN_FLAG_RX_BUF_POOLS (1 << SPAPRVLAN_FLAG_RX_BUF_POOLS_BIT) | |
49 | ||
8d90ad90 DG |
50 | /* |
51 | * Virtual LAN device | |
52 | */ | |
53 | ||
54 | typedef uint64_t vlan_bd_t; | |
55 | ||
56 | #define VLAN_BD_VALID 0x8000000000000000ULL | |
57 | #define VLAN_BD_TOGGLE 0x4000000000000000ULL | |
58 | #define VLAN_BD_NO_CSUM 0x0200000000000000ULL | |
59 | #define VLAN_BD_CSUM_GOOD 0x0100000000000000ULL | |
60 | #define VLAN_BD_LEN_MASK 0x00ffffff00000000ULL | |
61 | #define VLAN_BD_LEN(bd) (((bd) & VLAN_BD_LEN_MASK) >> 32) | |
62 | #define VLAN_BD_ADDR_MASK 0x00000000ffffffffULL | |
63 | #define VLAN_BD_ADDR(bd) ((bd) & VLAN_BD_ADDR_MASK) | |
64 | ||
65 | #define VLAN_VALID_BD(addr, len) (VLAN_BD_VALID | \ | |
66 | (((len) << 32) & VLAN_BD_LEN_MASK) | \ | |
67 | (addr & VLAN_BD_ADDR_MASK)) | |
68 | ||
69 | #define VLAN_RXQC_TOGGLE 0x80 | |
70 | #define VLAN_RXQC_VALID 0x40 | |
71 | #define VLAN_RXQC_NO_CSUM 0x02 | |
72 | #define VLAN_RXQC_CSUM_GOOD 0x01 | |
73 | ||
74 | #define VLAN_RQ_ALIGNMENT 16 | |
75 | #define VLAN_RXQ_BD_OFF 0 | |
76 | #define VLAN_FILTER_BD_OFF 8 | |
77 | #define VLAN_RX_BDS_OFF 16 | |
439ce140 AB |
78 | /* |
79 | * The final 8 bytes of the buffer list is a counter of frames dropped | |
80 | * because there was not a buffer in the buffer list capable of holding | |
81 | * the frame. We must avoid it, or the operating system will report garbage | |
82 | * for this statistic. | |
83 | */ | |
84 | #define VLAN_RX_BDS_LEN (SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF - 8) | |
85 | #define VLAN_MAX_BUFS (VLAN_RX_BDS_LEN / 8) | |
8d90ad90 | 86 | |
fd506b4f | 87 | #define TYPE_VIO_SPAPR_VLAN_DEVICE "spapr-vlan" |
db1015e9 | 88 | typedef struct SpaprVioVlan SpaprVioVlan; |
fd506b4f | 89 | #define VIO_SPAPR_VLAN_DEVICE(obj) \ |
ce2918cb | 90 | OBJECT_CHECK(SpaprVioVlan, (obj), TYPE_VIO_SPAPR_VLAN_DEVICE) |
fd506b4f | 91 | |
831e8822 TH |
92 | #define RX_POOL_MAX_BDS 4096 |
93 | #define RX_MAX_POOLS 5 | |
94 | ||
95 | typedef struct { | |
96 | int32_t bufsize; | |
97 | int32_t count; | |
98 | vlan_bd_t bds[RX_POOL_MAX_BDS]; | |
99 | } RxBufPool; | |
100 | ||
db1015e9 | 101 | struct SpaprVioVlan { |
ce2918cb | 102 | SpaprVioDevice sdev; |
8d90ad90 DG |
103 | NICConf nicconf; |
104 | NICState *nic; | |
32f5f50d | 105 | MACAddr perm_mac; |
686fefe4 | 106 | bool isopen; |
cbd62f86 | 107 | hwaddr buf_list; |
686fefe4 | 108 | uint32_t add_buf_ptr, use_buf_ptr, rx_bufs; |
cbd62f86 | 109 | hwaddr rxq_ptr; |
8836630f | 110 | QEMUTimer *rxp_timer; |
b12227af | 111 | uint32_t compat_flags; /* Compatibility flags for migration */ |
831e8822 | 112 | RxBufPool *rx_pool[RX_MAX_POOLS]; /* Receive buffer descriptor pools */ |
db1015e9 | 113 | }; |
8d90ad90 | 114 | |
b8c4b67e | 115 | static bool spapr_vlan_can_receive(NetClientState *nc) |
8d90ad90 | 116 | { |
ce2918cb | 117 | SpaprVioVlan *dev = qemu_get_nic_opaque(nc); |
8d90ad90 | 118 | |
b8c4b67e | 119 | return dev->isopen && dev->rx_bufs > 0; |
8d90ad90 DG |
120 | } |
121 | ||
5c29dd8c TH |
122 | /** |
123 | * The last 8 bytes of the receive buffer list page (that has been | |
124 | * supplied by the guest with the H_REGISTER_LOGICAL_LAN call) contain | |
125 | * a counter for frames that have been dropped because there was no | |
126 | * suitable receive buffer available. This function is used to increase | |
127 | * this counter by one. | |
128 | */ | |
ce2918cb | 129 | static void spapr_vlan_record_dropped_rx_frame(SpaprVioVlan *dev) |
5c29dd8c TH |
130 | { |
131 | uint64_t cnt; | |
132 | ||
133 | cnt = vio_ldq(&dev->sdev, dev->buf_list + 4096 - 8); | |
134 | vio_stq(&dev->sdev, dev->buf_list + 4096 - 8, cnt + 1); | |
135 | } | |
136 | ||
831e8822 TH |
137 | /** |
138 | * Get buffer descriptor from one of our receive buffer pools | |
139 | */ | |
ce2918cb | 140 | static vlan_bd_t spapr_vlan_get_rx_bd_from_pool(SpaprVioVlan *dev, |
831e8822 TH |
141 | size_t size) |
142 | { | |
143 | vlan_bd_t bd; | |
144 | int pool; | |
145 | ||
146 | for (pool = 0; pool < RX_MAX_POOLS; pool++) { | |
147 | if (dev->rx_pool[pool]->count > 0 && | |
148 | dev->rx_pool[pool]->bufsize >= size + 8) { | |
149 | break; | |
150 | } | |
151 | } | |
152 | if (pool == RX_MAX_POOLS) { | |
153 | /* Failed to find a suitable buffer */ | |
154 | return 0; | |
155 | } | |
156 | ||
e8bb33de LV |
157 | |
158 | trace_spapr_vlan_get_rx_bd_from_pool_found(pool, | |
159 | dev->rx_pool[pool]->count, | |
160 | dev->rx_bufs); | |
831e8822 TH |
161 | |
162 | /* Remove the buffer from the pool */ | |
163 | dev->rx_pool[pool]->count--; | |
164 | bd = dev->rx_pool[pool]->bds[dev->rx_pool[pool]->count]; | |
165 | dev->rx_pool[pool]->bds[dev->rx_pool[pool]->count] = 0; | |
166 | ||
167 | return bd; | |
168 | } | |
169 | ||
d6f39fdf TH |
170 | /** |
171 | * Get buffer descriptor from the receive buffer list page that has been | |
172 | * supplied by the guest with the H_REGISTER_LOGICAL_LAN call | |
173 | */ | |
ce2918cb | 174 | static vlan_bd_t spapr_vlan_get_rx_bd_from_page(SpaprVioVlan *dev, |
d6f39fdf TH |
175 | size_t size) |
176 | { | |
177 | int buf_ptr = dev->use_buf_ptr; | |
178 | vlan_bd_t bd; | |
179 | ||
180 | do { | |
181 | buf_ptr += 8; | |
182 | if (buf_ptr >= VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF) { | |
183 | buf_ptr = VLAN_RX_BDS_OFF; | |
184 | } | |
185 | ||
186 | bd = vio_ldq(&dev->sdev, dev->buf_list + buf_ptr); | |
e8bb33de LV |
187 | |
188 | trace_spapr_vlan_get_rx_bd_from_page(buf_ptr, (uint64_t)bd); | |
d6f39fdf TH |
189 | } while ((!(bd & VLAN_BD_VALID) || VLAN_BD_LEN(bd) < size + 8) |
190 | && buf_ptr != dev->use_buf_ptr); | |
191 | ||
192 | if (!(bd & VLAN_BD_VALID) || VLAN_BD_LEN(bd) < size + 8) { | |
193 | /* Failed to find a suitable buffer */ | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* Remove the buffer from the pool */ | |
198 | dev->use_buf_ptr = buf_ptr; | |
199 | vio_stq(&dev->sdev, dev->buf_list + dev->use_buf_ptr, 0); | |
200 | ||
e8bb33de | 201 | trace_spapr_vlan_get_rx_bd_from_page_found(dev->use_buf_ptr, dev->rx_bufs); |
d6f39fdf TH |
202 | |
203 | return bd; | |
204 | } | |
205 | ||
4e68f7a0 | 206 | static ssize_t spapr_vlan_receive(NetClientState *nc, const uint8_t *buf, |
8d90ad90 DG |
207 | size_t size) |
208 | { | |
ce2918cb DG |
209 | SpaprVioVlan *dev = qemu_get_nic_opaque(nc); |
210 | SpaprVioDevice *sdev = VIO_SPAPR_DEVICE(dev); | |
ad0ebb91 | 211 | vlan_bd_t rxq_bd = vio_ldq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF); |
8d90ad90 | 212 | vlan_bd_t bd; |
8d90ad90 DG |
213 | uint64_t handle; |
214 | uint8_t control; | |
215 | ||
e8bb33de | 216 | trace_spapr_vlan_receive(sdev->qdev.id, dev->rx_bufs); |
8d90ad90 DG |
217 | |
218 | if (!dev->isopen) { | |
219 | return -1; | |
220 | } | |
221 | ||
222 | if (!dev->rx_bufs) { | |
5c29dd8c | 223 | spapr_vlan_record_dropped_rx_frame(dev); |
8836630f | 224 | return 0; |
8d90ad90 DG |
225 | } |
226 | ||
831e8822 TH |
227 | if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { |
228 | bd = spapr_vlan_get_rx_bd_from_pool(dev, size); | |
229 | } else { | |
230 | bd = spapr_vlan_get_rx_bd_from_page(dev, size); | |
231 | } | |
d6f39fdf | 232 | if (!bd) { |
5c29dd8c | 233 | spapr_vlan_record_dropped_rx_frame(dev); |
8836630f | 234 | return 0; |
8d90ad90 DG |
235 | } |
236 | ||
8d90ad90 | 237 | dev->rx_bufs--; |
8d90ad90 DG |
238 | |
239 | /* Transfer the packet data */ | |
ad0ebb91 | 240 | if (spapr_vio_dma_write(sdev, VLAN_BD_ADDR(bd) + 8, buf, size) < 0) { |
8d90ad90 DG |
241 | return -1; |
242 | } | |
243 | ||
e8bb33de | 244 | trace_spapr_vlan_receive_dma_completed(); |
8d90ad90 DG |
245 | |
246 | /* Update the receive queue */ | |
247 | control = VLAN_RXQC_TOGGLE | VLAN_RXQC_VALID; | |
248 | if (rxq_bd & VLAN_BD_TOGGLE) { | |
249 | control ^= VLAN_RXQC_TOGGLE; | |
250 | } | |
251 | ||
ad0ebb91 DG |
252 | handle = vio_ldq(sdev, VLAN_BD_ADDR(bd)); |
253 | vio_stq(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 8, handle); | |
254 | vio_stl(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 4, size); | |
255 | vio_sth(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 2, 8); | |
256 | vio_stb(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr, control); | |
8d90ad90 | 257 | |
e8bb33de LV |
258 | trace_spapr_vlan_receive_wrote(dev->rxq_ptr, |
259 | vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) + | |
260 | dev->rxq_ptr), | |
261 | vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) + | |
262 | dev->rxq_ptr + 8)); | |
8d90ad90 DG |
263 | |
264 | dev->rxq_ptr += 16; | |
265 | if (dev->rxq_ptr >= VLAN_BD_LEN(rxq_bd)) { | |
266 | dev->rxq_ptr = 0; | |
ad0ebb91 | 267 | vio_stq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF, rxq_bd ^ VLAN_BD_TOGGLE); |
8d90ad90 DG |
268 | } |
269 | ||
270 | if (sdev->signal_state & 1) { | |
7678b74a | 271 | spapr_vio_irq_pulse(sdev); |
8d90ad90 DG |
272 | } |
273 | ||
274 | return size; | |
275 | } | |
276 | ||
277 | static NetClientInfo net_spapr_vlan_info = { | |
f394b2e2 | 278 | .type = NET_CLIENT_DRIVER_NIC, |
8d90ad90 DG |
279 | .size = sizeof(NICState), |
280 | .can_receive = spapr_vlan_can_receive, | |
281 | .receive = spapr_vlan_receive, | |
282 | }; | |
283 | ||
8836630f TH |
284 | static void spapr_vlan_flush_rx_queue(void *opaque) |
285 | { | |
ce2918cb | 286 | SpaprVioVlan *dev = opaque; |
8836630f TH |
287 | |
288 | qemu_flush_queued_packets(qemu_get_queue(dev->nic)); | |
289 | } | |
290 | ||
831e8822 TH |
291 | static void spapr_vlan_reset_rx_pool(RxBufPool *rxp) |
292 | { | |
293 | /* | |
294 | * Use INT_MAX as bufsize so that unused buffers are moved to the end | |
295 | * of the list during the qsort in spapr_vlan_add_rxbuf_to_pool() later. | |
296 | */ | |
297 | rxp->bufsize = INT_MAX; | |
298 | rxp->count = 0; | |
299 | memset(rxp->bds, 0, sizeof(rxp->bds)); | |
300 | } | |
301 | ||
ce2918cb | 302 | static void spapr_vlan_reset(SpaprVioDevice *sdev) |
c17491b6 | 303 | { |
ce2918cb | 304 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); |
831e8822 | 305 | int i; |
c17491b6 DG |
306 | |
307 | dev->buf_list = 0; | |
308 | dev->rx_bufs = 0; | |
309 | dev->isopen = 0; | |
831e8822 TH |
310 | |
311 | if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { | |
312 | for (i = 0; i < RX_MAX_POOLS; i++) { | |
313 | spapr_vlan_reset_rx_pool(dev->rx_pool[i]); | |
314 | } | |
315 | } | |
32f5f50d LV |
316 | |
317 | memcpy(&dev->nicconf.macaddr.a, &dev->perm_mac.a, | |
318 | sizeof(dev->nicconf.macaddr.a)); | |
319 | qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a); | |
c17491b6 DG |
320 | } |
321 | ||
ce2918cb | 322 | static void spapr_vlan_realize(SpaprVioDevice *sdev, Error **errp) |
8d90ad90 | 323 | { |
ce2918cb | 324 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); |
8d90ad90 DG |
325 | |
326 | qemu_macaddr_default_if_unset(&dev->nicconf.macaddr); | |
327 | ||
32f5f50d LV |
328 | memcpy(&dev->perm_mac.a, &dev->nicconf.macaddr.a, sizeof(dev->perm_mac.a)); |
329 | ||
8d90ad90 | 330 | dev->nic = qemu_new_nic(&net_spapr_vlan_info, &dev->nicconf, |
f79f2bfc | 331 | object_get_typename(OBJECT(sdev)), sdev->qdev.id, dev); |
b356f76d | 332 | qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a); |
8836630f TH |
333 | |
334 | dev->rxp_timer = timer_new_us(QEMU_CLOCK_VIRTUAL, spapr_vlan_flush_rx_queue, | |
335 | dev); | |
8d90ad90 DG |
336 | } |
337 | ||
dfe79cf2 GA |
338 | static void spapr_vlan_instance_init(Object *obj) |
339 | { | |
ce2918cb | 340 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(obj); |
831e8822 | 341 | int i; |
dfe79cf2 GA |
342 | |
343 | device_add_bootindex_property(obj, &dev->nicconf.bootindex, | |
344 | "bootindex", "", | |
40c2281c | 345 | DEVICE(dev)); |
831e8822 TH |
346 | |
347 | if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { | |
348 | for (i = 0; i < RX_MAX_POOLS; i++) { | |
349 | dev->rx_pool[i] = g_new(RxBufPool, 1); | |
350 | spapr_vlan_reset_rx_pool(dev->rx_pool[i]); | |
351 | } | |
352 | } | |
353 | } | |
354 | ||
355 | static void spapr_vlan_instance_finalize(Object *obj) | |
356 | { | |
ce2918cb | 357 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(obj); |
831e8822 TH |
358 | int i; |
359 | ||
360 | if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { | |
361 | for (i = 0; i < RX_MAX_POOLS; i++) { | |
362 | g_free(dev->rx_pool[i]); | |
363 | dev->rx_pool[i] = NULL; | |
364 | } | |
365 | } | |
8836630f TH |
366 | |
367 | if (dev->rxp_timer) { | |
368 | timer_del(dev->rxp_timer); | |
369 | timer_free(dev->rxp_timer); | |
370 | } | |
dfe79cf2 GA |
371 | } |
372 | ||
ce2918cb | 373 | void spapr_vlan_create(SpaprVioBus *bus, NICInfo *nd) |
8d90ad90 DG |
374 | { |
375 | DeviceState *dev; | |
8d90ad90 | 376 | |
3e80f690 | 377 | dev = qdev_new("spapr-vlan"); |
8d90ad90 DG |
378 | |
379 | qdev_set_nic_properties(dev, nd); | |
380 | ||
3e80f690 | 381 | qdev_realize_and_unref(dev, &bus->bus, &error_fatal); |
8d90ad90 DG |
382 | } |
383 | ||
ce2918cb | 384 | static int spapr_vlan_devnode(SpaprVioDevice *dev, void *fdt, int node_off) |
8d90ad90 | 385 | { |
ce2918cb | 386 | SpaprVioVlan *vdev = VIO_SPAPR_VLAN_DEVICE(dev); |
8d90ad90 DG |
387 | uint8_t padded_mac[8] = {0, 0}; |
388 | int ret; | |
389 | ||
390 | /* Some old phyp versions give the mac address in an 8-byte | |
87684b4c | 391 | * property. The kernel driver (before 3.10) has an insane workaround; |
8d90ad90 DG |
392 | * rather than doing the obvious thing and checking the property |
393 | * length, it checks whether the first byte has 0b10 in the low | |
394 | * bits. If a correct 6-byte property has a different first byte | |
395 | * the kernel will get the wrong mac address, overrunning its | |
396 | * buffer in the process (read only, thank goodness). | |
397 | * | |
87684b4c SB |
398 | * Here we return a 6-byte address unless that would break a pre-3.10 |
399 | * driver. In that case we return a padded 8-byte address to allow the old | |
400 | * workaround to succeed. */ | |
401 | if ((vdev->nicconf.macaddr.a[0] & 0x3) == 0x2) { | |
402 | ret = fdt_setprop(fdt, node_off, "local-mac-address", | |
403 | &vdev->nicconf.macaddr, ETH_ALEN); | |
404 | } else { | |
405 | memcpy(&padded_mac[2], &vdev->nicconf.macaddr, ETH_ALEN); | |
406 | ret = fdt_setprop(fdt, node_off, "local-mac-address", | |
407 | padded_mac, sizeof(padded_mac)); | |
408 | } | |
8d90ad90 DG |
409 | if (ret < 0) { |
410 | return ret; | |
411 | } | |
412 | ||
413 | ret = fdt_setprop_cell(fdt, node_off, "ibm,mac-address-filters", 0); | |
414 | if (ret < 0) { | |
415 | return ret; | |
416 | } | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
ce2918cb | 421 | static int check_bd(SpaprVioVlan *dev, vlan_bd_t bd, |
8d90ad90 DG |
422 | target_ulong alignment) |
423 | { | |
424 | if ((VLAN_BD_ADDR(bd) % alignment) | |
425 | || (VLAN_BD_LEN(bd) % alignment)) { | |
426 | return -1; | |
427 | } | |
428 | ||
ad0ebb91 DG |
429 | if (!spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd), |
430 | VLAN_BD_LEN(bd), DMA_DIRECTION_FROM_DEVICE) | |
431 | || !spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd), | |
432 | VLAN_BD_LEN(bd), DMA_DIRECTION_TO_DEVICE)) { | |
8d90ad90 DG |
433 | return -1; |
434 | } | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
b13ce26d | 439 | static target_ulong h_register_logical_lan(PowerPCCPU *cpu, |
ce2918cb | 440 | SpaprMachineState *spapr, |
8d90ad90 DG |
441 | target_ulong opcode, |
442 | target_ulong *args) | |
443 | { | |
444 | target_ulong reg = args[0]; | |
445 | target_ulong buf_list = args[1]; | |
446 | target_ulong rec_queue = args[2]; | |
447 | target_ulong filter_list = args[3]; | |
ce2918cb DG |
448 | SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
449 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); | |
8d90ad90 | 450 | vlan_bd_t filter_list_bd; |
8d90ad90 DG |
451 | |
452 | if (!dev) { | |
453 | return H_PARAMETER; | |
454 | } | |
455 | ||
456 | if (dev->isopen) { | |
457 | hcall_dprintf("H_REGISTER_LOGICAL_LAN called twice without " | |
458 | "H_FREE_LOGICAL_LAN\n"); | |
459 | return H_RESOURCE; | |
460 | } | |
461 | ||
ad0ebb91 DG |
462 | if (check_bd(dev, VLAN_VALID_BD(buf_list, SPAPR_TCE_PAGE_SIZE), |
463 | SPAPR_TCE_PAGE_SIZE) < 0) { | |
d9599c92 | 464 | hcall_dprintf("Bad buf_list 0x" TARGET_FMT_lx "\n", buf_list); |
8d90ad90 DG |
465 | return H_PARAMETER; |
466 | } | |
467 | ||
ad0ebb91 DG |
468 | filter_list_bd = VLAN_VALID_BD(filter_list, SPAPR_TCE_PAGE_SIZE); |
469 | if (check_bd(dev, filter_list_bd, SPAPR_TCE_PAGE_SIZE) < 0) { | |
d9599c92 | 470 | hcall_dprintf("Bad filter_list 0x" TARGET_FMT_lx "\n", filter_list); |
8d90ad90 DG |
471 | return H_PARAMETER; |
472 | } | |
473 | ||
474 | if (!(rec_queue & VLAN_BD_VALID) | |
475 | || (check_bd(dev, rec_queue, VLAN_RQ_ALIGNMENT) < 0)) { | |
d9599c92 | 476 | hcall_dprintf("Bad receive queue\n"); |
8d90ad90 DG |
477 | return H_PARAMETER; |
478 | } | |
479 | ||
480 | dev->buf_list = buf_list; | |
481 | sdev->signal_state = 0; | |
482 | ||
483 | rec_queue &= ~VLAN_BD_TOGGLE; | |
484 | ||
485 | /* Initialize the buffer list */ | |
ad0ebb91 DG |
486 | vio_stq(sdev, buf_list, rec_queue); |
487 | vio_stq(sdev, buf_list + 8, filter_list_bd); | |
488 | spapr_vio_dma_set(sdev, buf_list + VLAN_RX_BDS_OFF, 0, | |
489 | SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF); | |
8d90ad90 DG |
490 | dev->add_buf_ptr = VLAN_RX_BDS_OFF - 8; |
491 | dev->use_buf_ptr = VLAN_RX_BDS_OFF - 8; | |
492 | dev->rx_bufs = 0; | |
493 | dev->rxq_ptr = 0; | |
494 | ||
495 | /* Initialize the receive queue */ | |
ad0ebb91 | 496 | spapr_vio_dma_set(sdev, VLAN_BD_ADDR(rec_queue), 0, VLAN_BD_LEN(rec_queue)); |
8d90ad90 DG |
497 | |
498 | dev->isopen = 1; | |
e0ff466c AK |
499 | qemu_flush_queued_packets(qemu_get_queue(dev->nic)); |
500 | ||
8d90ad90 DG |
501 | return H_SUCCESS; |
502 | } | |
503 | ||
504 | ||
28e02042 | 505 | static target_ulong h_free_logical_lan(PowerPCCPU *cpu, |
ce2918cb | 506 | SpaprMachineState *spapr, |
8d90ad90 DG |
507 | target_ulong opcode, target_ulong *args) |
508 | { | |
509 | target_ulong reg = args[0]; | |
ce2918cb DG |
510 | SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
511 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); | |
8d90ad90 DG |
512 | |
513 | if (!dev) { | |
514 | return H_PARAMETER; | |
515 | } | |
516 | ||
517 | if (!dev->isopen) { | |
518 | hcall_dprintf("H_FREE_LOGICAL_LAN called without " | |
519 | "H_REGISTER_LOGICAL_LAN\n"); | |
520 | return H_RESOURCE; | |
521 | } | |
522 | ||
c17491b6 | 523 | spapr_vlan_reset(sdev); |
8d90ad90 DG |
524 | return H_SUCCESS; |
525 | } | |
526 | ||
831e8822 TH |
527 | /** |
528 | * Used for qsort, this function compares two RxBufPools by size. | |
529 | */ | |
530 | static int rx_pool_size_compare(const void *p1, const void *p2) | |
531 | { | |
532 | const RxBufPool *pool1 = *(RxBufPool **)p1; | |
533 | const RxBufPool *pool2 = *(RxBufPool **)p2; | |
534 | ||
535 | if (pool1->bufsize < pool2->bufsize) { | |
536 | return -1; | |
537 | } | |
538 | return pool1->bufsize > pool2->bufsize; | |
539 | } | |
540 | ||
541 | /** | |
542 | * Search for a matching buffer pool with exact matching size, | |
543 | * or return -1 if no matching pool has been found. | |
544 | */ | |
ce2918cb | 545 | static int spapr_vlan_get_rx_pool_id(SpaprVioVlan *dev, int size) |
831e8822 TH |
546 | { |
547 | int pool; | |
548 | ||
549 | for (pool = 0; pool < RX_MAX_POOLS; pool++) { | |
550 | if (dev->rx_pool[pool]->bufsize == size) { | |
551 | return pool; | |
552 | } | |
553 | } | |
554 | ||
555 | return -1; | |
556 | } | |
557 | ||
558 | /** | |
559 | * Enqueuing receive buffer by adding it to one of our receive buffer pools | |
560 | */ | |
ce2918cb | 561 | static target_long spapr_vlan_add_rxbuf_to_pool(SpaprVioVlan *dev, |
831e8822 TH |
562 | target_ulong buf) |
563 | { | |
564 | int size = VLAN_BD_LEN(buf); | |
565 | int pool; | |
566 | ||
567 | pool = spapr_vlan_get_rx_pool_id(dev, size); | |
568 | if (pool < 0) { | |
569 | /* | |
570 | * No matching pool found? Try to use a new one. If the guest used all | |
b12227af | 571 | * pools before, but changed the size of one pool in the meantime, we might |
831e8822 TH |
572 | * need to recycle that pool here (if it's empty already). Thus scan |
573 | * all buffer pools now, starting with the last (likely empty) one. | |
574 | */ | |
575 | for (pool = RX_MAX_POOLS - 1; pool >= 0 ; pool--) { | |
576 | if (dev->rx_pool[pool]->count == 0) { | |
577 | dev->rx_pool[pool]->bufsize = size; | |
578 | /* | |
579 | * Sort pools by size so that spapr_vlan_receive() | |
580 | * can later find the smallest buffer pool easily. | |
581 | */ | |
582 | qsort(dev->rx_pool, RX_MAX_POOLS, sizeof(dev->rx_pool[0]), | |
583 | rx_pool_size_compare); | |
584 | pool = spapr_vlan_get_rx_pool_id(dev, size); | |
e8bb33de LV |
585 | trace_spapr_vlan_add_rxbuf_to_pool_create(pool, |
586 | VLAN_BD_LEN(buf)); | |
831e8822 TH |
587 | break; |
588 | } | |
589 | } | |
590 | } | |
591 | /* Still no usable pool? Give up */ | |
592 | if (pool < 0 || dev->rx_pool[pool]->count >= RX_POOL_MAX_BDS) { | |
593 | return H_RESOURCE; | |
594 | } | |
595 | ||
e8bb33de LV |
596 | trace_spapr_vlan_add_rxbuf_to_pool(pool, VLAN_BD_LEN(buf), |
597 | dev->rx_pool[pool]->count); | |
831e8822 TH |
598 | |
599 | dev->rx_pool[pool]->bds[dev->rx_pool[pool]->count++] = buf; | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
604 | /** | |
605 | * This is the old way of enqueuing receive buffers: Add it to the rx queue | |
606 | * page that has been supplied by the guest (which is quite limited in size). | |
607 | */ | |
ce2918cb | 608 | static target_long spapr_vlan_add_rxbuf_to_page(SpaprVioVlan *dev, |
d6f39fdf TH |
609 | target_ulong buf) |
610 | { | |
611 | vlan_bd_t bd; | |
612 | ||
613 | if (dev->rx_bufs >= VLAN_MAX_BUFS) { | |
614 | return H_RESOURCE; | |
615 | } | |
616 | ||
617 | do { | |
618 | dev->add_buf_ptr += 8; | |
619 | if (dev->add_buf_ptr >= VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF) { | |
620 | dev->add_buf_ptr = VLAN_RX_BDS_OFF; | |
621 | } | |
622 | ||
623 | bd = vio_ldq(&dev->sdev, dev->buf_list + dev->add_buf_ptr); | |
624 | } while (bd & VLAN_BD_VALID); | |
625 | ||
626 | vio_stq(&dev->sdev, dev->buf_list + dev->add_buf_ptr, buf); | |
627 | ||
e8bb33de | 628 | trace_spapr_vlan_add_rxbuf_to_page(dev->add_buf_ptr, dev->rx_bufs, buf); |
d6f39fdf TH |
629 | |
630 | return 0; | |
631 | } | |
632 | ||
b13ce26d | 633 | static target_ulong h_add_logical_lan_buffer(PowerPCCPU *cpu, |
ce2918cb | 634 | SpaprMachineState *spapr, |
8d90ad90 DG |
635 | target_ulong opcode, |
636 | target_ulong *args) | |
637 | { | |
638 | target_ulong reg = args[0]; | |
639 | target_ulong buf = args[1]; | |
ce2918cb DG |
640 | SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
641 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); | |
d6f39fdf | 642 | target_long ret; |
8d90ad90 | 643 | |
e8bb33de | 644 | trace_spapr_vlan_h_add_logical_lan_buffer(reg, buf); |
8d90ad90 DG |
645 | |
646 | if (!sdev) { | |
d9599c92 | 647 | hcall_dprintf("Bad device\n"); |
8d90ad90 DG |
648 | return H_PARAMETER; |
649 | } | |
650 | ||
651 | if ((check_bd(dev, buf, 4) < 0) | |
652 | || (VLAN_BD_LEN(buf) < 16)) { | |
d9599c92 | 653 | hcall_dprintf("Bad buffer enqueued\n"); |
8d90ad90 DG |
654 | return H_PARAMETER; |
655 | } | |
656 | ||
d6f39fdf | 657 | if (!dev->isopen) { |
8d90ad90 DG |
658 | return H_RESOURCE; |
659 | } | |
660 | ||
831e8822 TH |
661 | if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { |
662 | ret = spapr_vlan_add_rxbuf_to_pool(dev, buf); | |
663 | } else { | |
664 | ret = spapr_vlan_add_rxbuf_to_page(dev, buf); | |
665 | } | |
d6f39fdf TH |
666 | if (ret) { |
667 | return ret; | |
668 | } | |
8d90ad90 DG |
669 | |
670 | dev->rx_bufs++; | |
671 | ||
8836630f TH |
672 | /* |
673 | * Give guest some more time to add additional RX buffers before we | |
674 | * flush the receive queue, so that e.g. fragmented IP packets can | |
675 | * be passed to the guest in one go later (instead of passing single | |
676 | * fragments if there is only one receive buffer available). | |
677 | */ | |
678 | timer_mod(dev->rxp_timer, qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 500); | |
0a61f3b4 | 679 | |
8d90ad90 DG |
680 | return H_SUCCESS; |
681 | } | |
682 | ||
28e02042 | 683 | static target_ulong h_send_logical_lan(PowerPCCPU *cpu, |
ce2918cb | 684 | SpaprMachineState *spapr, |
8d90ad90 DG |
685 | target_ulong opcode, target_ulong *args) |
686 | { | |
687 | target_ulong reg = args[0]; | |
688 | target_ulong *bufs = args + 1; | |
689 | target_ulong continue_token = args[7]; | |
ce2918cb DG |
690 | SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
691 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); | |
8d90ad90 DG |
692 | unsigned total_len; |
693 | uint8_t *lbuf, *p; | |
694 | int i, nbufs; | |
695 | int ret; | |
696 | ||
e8bb33de | 697 | trace_spapr_vlan_h_send_logical_lan(reg, continue_token); |
8d90ad90 DG |
698 | |
699 | if (!sdev) { | |
700 | return H_PARAMETER; | |
701 | } | |
702 | ||
e8bb33de | 703 | trace_spapr_vlan_h_send_logical_lan_rxbufs(dev->rx_bufs); |
8d90ad90 DG |
704 | |
705 | if (!dev->isopen) { | |
706 | return H_DROPPED; | |
707 | } | |
708 | ||
709 | if (continue_token) { | |
710 | return H_HARDWARE; /* FIXME actually handle this */ | |
711 | } | |
712 | ||
713 | total_len = 0; | |
714 | for (i = 0; i < 6; i++) { | |
e8bb33de | 715 | trace_spapr_vlan_h_send_logical_lan_buf_desc(bufs[i]); |
8d90ad90 DG |
716 | if (!(bufs[i] & VLAN_BD_VALID)) { |
717 | break; | |
718 | } | |
719 | total_len += VLAN_BD_LEN(bufs[i]); | |
720 | } | |
721 | ||
722 | nbufs = i; | |
e8bb33de | 723 | trace_spapr_vlan_h_send_logical_lan_total(nbufs, total_len); |
8d90ad90 DG |
724 | |
725 | if (total_len == 0) { | |
726 | return H_SUCCESS; | |
727 | } | |
728 | ||
729 | if (total_len > MAX_PACKET_SIZE) { | |
730 | /* Don't let the guest force too large an allocation */ | |
731 | return H_RESOURCE; | |
732 | } | |
733 | ||
734 | lbuf = alloca(total_len); | |
735 | p = lbuf; | |
736 | for (i = 0; i < nbufs; i++) { | |
ad0ebb91 | 737 | ret = spapr_vio_dma_read(sdev, VLAN_BD_ADDR(bufs[i]), |
8d90ad90 DG |
738 | p, VLAN_BD_LEN(bufs[i])); |
739 | if (ret < 0) { | |
740 | return ret; | |
741 | } | |
742 | ||
743 | p += VLAN_BD_LEN(bufs[i]); | |
744 | } | |
745 | ||
b356f76d | 746 | qemu_send_packet(qemu_get_queue(dev->nic), lbuf, total_len); |
8d90ad90 DG |
747 | |
748 | return H_SUCCESS; | |
749 | } | |
750 | ||
ce2918cb | 751 | static target_ulong h_multicast_ctrl(PowerPCCPU *cpu, SpaprMachineState *spapr, |
8d90ad90 DG |
752 | target_ulong opcode, target_ulong *args) |
753 | { | |
754 | target_ulong reg = args[0]; | |
ce2918cb | 755 | SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
8d90ad90 DG |
756 | |
757 | if (!dev) { | |
758 | return H_PARAMETER; | |
759 | } | |
760 | ||
761 | return H_SUCCESS; | |
762 | } | |
763 | ||
32f5f50d | 764 | static target_ulong h_change_logical_lan_mac(PowerPCCPU *cpu, |
ce2918cb | 765 | SpaprMachineState *spapr, |
32f5f50d LV |
766 | target_ulong opcode, |
767 | target_ulong *args) | |
768 | { | |
769 | target_ulong reg = args[0]; | |
770 | target_ulong macaddr = args[1]; | |
ce2918cb DG |
771 | SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
772 | SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); | |
32f5f50d LV |
773 | int i; |
774 | ||
775 | for (i = 0; i < ETH_ALEN; i++) { | |
776 | dev->nicconf.macaddr.a[ETH_ALEN - i - 1] = macaddr & 0xff; | |
777 | macaddr >>= 8; | |
778 | } | |
779 | ||
780 | qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a); | |
781 | ||
782 | return H_SUCCESS; | |
783 | } | |
784 | ||
3954d33a | 785 | static Property spapr_vlan_properties[] = { |
ce2918cb DG |
786 | DEFINE_SPAPR_PROPERTIES(SpaprVioVlan, sdev), |
787 | DEFINE_NIC_PROPERTIES(SpaprVioVlan, nicconf), | |
788 | DEFINE_PROP_BIT("use-rx-buffer-pools", SpaprVioVlan, | |
57c522f4 | 789 | compat_flags, SPAPRVLAN_FLAG_RX_BUF_POOLS_BIT, true), |
3954d33a AL |
790 | DEFINE_PROP_END_OF_LIST(), |
791 | }; | |
792 | ||
831e8822 TH |
793 | static bool spapr_vlan_rx_buffer_pools_needed(void *opaque) |
794 | { | |
ce2918cb | 795 | SpaprVioVlan *dev = opaque; |
831e8822 TH |
796 | |
797 | return (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) != 0; | |
798 | } | |
799 | ||
800 | static const VMStateDescription vmstate_rx_buffer_pool = { | |
801 | .name = "spapr_llan/rx_buffer_pool", | |
802 | .version_id = 1, | |
803 | .minimum_version_id = 1, | |
804 | .needed = spapr_vlan_rx_buffer_pools_needed, | |
805 | .fields = (VMStateField[]) { | |
806 | VMSTATE_INT32(bufsize, RxBufPool), | |
807 | VMSTATE_INT32(count, RxBufPool), | |
808 | VMSTATE_UINT64_ARRAY(bds, RxBufPool, RX_POOL_MAX_BDS), | |
809 | VMSTATE_END_OF_LIST() | |
810 | } | |
811 | }; | |
812 | ||
813 | static const VMStateDescription vmstate_rx_pools = { | |
814 | .name = "spapr_llan/rx_pools", | |
815 | .version_id = 1, | |
816 | .minimum_version_id = 1, | |
817 | .needed = spapr_vlan_rx_buffer_pools_needed, | |
818 | .fields = (VMStateField[]) { | |
ce2918cb | 819 | VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(rx_pool, SpaprVioVlan, |
831e8822 TH |
820 | RX_MAX_POOLS, 1, |
821 | vmstate_rx_buffer_pool, RxBufPool), | |
822 | VMSTATE_END_OF_LIST() | |
823 | } | |
824 | }; | |
825 | ||
686fefe4 DG |
826 | static const VMStateDescription vmstate_spapr_llan = { |
827 | .name = "spapr_llan", | |
828 | .version_id = 1, | |
829 | .minimum_version_id = 1, | |
3aff6c2f | 830 | .fields = (VMStateField[]) { |
ce2918cb | 831 | VMSTATE_SPAPR_VIO(sdev, SpaprVioVlan), |
686fefe4 | 832 | /* LLAN state */ |
ce2918cb DG |
833 | VMSTATE_BOOL(isopen, SpaprVioVlan), |
834 | VMSTATE_UINT64(buf_list, SpaprVioVlan), | |
835 | VMSTATE_UINT32(add_buf_ptr, SpaprVioVlan), | |
836 | VMSTATE_UINT32(use_buf_ptr, SpaprVioVlan), | |
837 | VMSTATE_UINT32(rx_bufs, SpaprVioVlan), | |
838 | VMSTATE_UINT64(rxq_ptr, SpaprVioVlan), | |
686fefe4 DG |
839 | |
840 | VMSTATE_END_OF_LIST() | |
841 | }, | |
831e8822 TH |
842 | .subsections = (const VMStateDescription * []) { |
843 | &vmstate_rx_pools, | |
844 | NULL | |
845 | } | |
686fefe4 DG |
846 | }; |
847 | ||
3954d33a AL |
848 | static void spapr_vlan_class_init(ObjectClass *klass, void *data) |
849 | { | |
39bffca2 | 850 | DeviceClass *dc = DEVICE_CLASS(klass); |
ce2918cb | 851 | SpaprVioDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); |
3954d33a | 852 | |
28b07e73 | 853 | k->realize = spapr_vlan_realize; |
c17491b6 | 854 | k->reset = spapr_vlan_reset; |
3954d33a AL |
855 | k->devnode = spapr_vlan_devnode; |
856 | k->dt_name = "l-lan"; | |
857 | k->dt_type = "network"; | |
858 | k->dt_compatible = "IBM,l-lan"; | |
859 | k->signal_mask = 0x1; | |
29fdedfe | 860 | set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); |
4f67d30b | 861 | device_class_set_props(dc, spapr_vlan_properties); |
ad0ebb91 | 862 | k->rtce_window_size = 0x10000000; |
686fefe4 | 863 | dc->vmsd = &vmstate_spapr_llan; |
3954d33a AL |
864 | } |
865 | ||
8c43a6f0 | 866 | static const TypeInfo spapr_vlan_info = { |
fd506b4f | 867 | .name = TYPE_VIO_SPAPR_VLAN_DEVICE, |
39bffca2 | 868 | .parent = TYPE_VIO_SPAPR_DEVICE, |
ce2918cb | 869 | .instance_size = sizeof(SpaprVioVlan), |
39bffca2 | 870 | .class_init = spapr_vlan_class_init, |
dfe79cf2 | 871 | .instance_init = spapr_vlan_instance_init, |
831e8822 | 872 | .instance_finalize = spapr_vlan_instance_finalize, |
8d90ad90 DG |
873 | }; |
874 | ||
83f7d43a | 875 | static void spapr_vlan_register_types(void) |
8d90ad90 | 876 | { |
1fc02533 DG |
877 | spapr_register_hypercall(H_REGISTER_LOGICAL_LAN, h_register_logical_lan); |
878 | spapr_register_hypercall(H_FREE_LOGICAL_LAN, h_free_logical_lan); | |
879 | spapr_register_hypercall(H_SEND_LOGICAL_LAN, h_send_logical_lan); | |
880 | spapr_register_hypercall(H_ADD_LOGICAL_LAN_BUFFER, | |
881 | h_add_logical_lan_buffer); | |
882 | spapr_register_hypercall(H_MULTICAST_CTRL, h_multicast_ctrl); | |
32f5f50d LV |
883 | spapr_register_hypercall(H_CHANGE_LOGICAL_LAN_MAC, |
884 | h_change_logical_lan_mac); | |
39bffca2 | 885 | type_register_static(&spapr_vlan_info); |
8d90ad90 | 886 | } |
83f7d43a AF |
887 | |
888 | type_init(spapr_vlan_register_types) |