1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2019 Intel Corporation
5 #include <rte_cycles.h>
6 #include <rte_bus_pci.h>
7 #include <rte_string_fns.h>
8 #include <rte_rawdev_pmd.h>
10 #include "rte_ioat_rawdev.h"
12 /* Dynamic log type identifier */
15 static struct rte_pci_driver ioat_pmd_drv;
17 #define IOAT_VENDOR_ID 0x8086
18 #define IOAT_DEVICE_ID_SKX 0x2021
19 #define IOAT_DEVICE_ID_BDX0 0x6f20
20 #define IOAT_DEVICE_ID_BDX1 0x6f21
21 #define IOAT_DEVICE_ID_BDX2 0x6f22
22 #define IOAT_DEVICE_ID_BDX3 0x6f23
23 #define IOAT_DEVICE_ID_BDX4 0x6f24
24 #define IOAT_DEVICE_ID_BDX5 0x6f25
25 #define IOAT_DEVICE_ID_BDX6 0x6f26
26 #define IOAT_DEVICE_ID_BDX7 0x6f27
27 #define IOAT_DEVICE_ID_BDXE 0x6f2E
28 #define IOAT_DEVICE_ID_BDXF 0x6f2F
30 #define IOAT_PMD_LOG(level, fmt, args...) rte_log(RTE_LOG_ ## level, \
31 ioat_pmd_logtype, "%s(): " fmt "\n", __func__, ##args)
33 #define IOAT_PMD_DEBUG(fmt, args...) IOAT_PMD_LOG(DEBUG, fmt, ## args)
34 #define IOAT_PMD_INFO(fmt, args...) IOAT_PMD_LOG(INFO, fmt, ## args)
35 #define IOAT_PMD_ERR(fmt, args...) IOAT_PMD_LOG(ERR, fmt, ## args)
36 #define IOAT_PMD_WARN(fmt, args...) IOAT_PMD_LOG(WARNING, fmt, ## args)
38 #define DESC_SZ sizeof(struct rte_ioat_generic_hw_desc)
39 #define COMPLETION_SZ sizeof(__m128i)
42 ioat_dev_configure(const struct rte_rawdev *dev, rte_rawdev_obj_t config)
44 struct rte_ioat_rawdev_config *params = config;
45 struct rte_ioat_rawdev *ioat = dev->dev_private;
46 char mz_name[RTE_MEMZONE_NAMESIZE];
55 if (params->ring_size > 4096 || params->ring_size < 64 ||
56 !rte_is_power_of_2(params->ring_size))
59 ioat->ring_size = params->ring_size;
60 if (ioat->desc_ring != NULL) {
61 rte_memzone_free(ioat->desc_mz);
62 ioat->desc_ring = NULL;
66 /* allocate one block of memory for both descriptors
67 * and completion handles.
69 snprintf(mz_name, sizeof(mz_name), "rawdev%u_desc_ring", dev->dev_id);
70 ioat->desc_mz = rte_memzone_reserve(mz_name,
71 (DESC_SZ + COMPLETION_SZ) * ioat->ring_size,
72 dev->device->numa_node, RTE_MEMZONE_IOVA_CONTIG);
73 if (ioat->desc_mz == NULL)
75 ioat->desc_ring = ioat->desc_mz->addr;
76 ioat->hdls = (void *)&ioat->desc_ring[ioat->ring_size];
78 ioat->ring_addr = ioat->desc_mz->iova;
80 /* configure descriptor ring - each one points to next */
81 for (i = 0; i < ioat->ring_size; i++) {
82 ioat->desc_ring[i].next = ioat->ring_addr +
83 (((i + 1) % ioat->ring_size) * DESC_SZ);
90 ioat_dev_start(struct rte_rawdev *dev)
92 struct rte_ioat_rawdev *ioat = dev->dev_private;
94 if (ioat->ring_size == 0 || ioat->desc_ring == NULL)
97 /* inform hardware of where the descriptor ring is */
98 ioat->regs->chainaddr = ioat->ring_addr;
99 /* inform hardware of where to write the status/completions */
100 ioat->regs->chancmp = ioat->status_addr;
102 /* prime the status register to be set to the last element */
103 ioat->status = ioat->ring_addr + ((ioat->ring_size - 1) * DESC_SZ);
108 ioat_dev_stop(struct rte_rawdev *dev)
114 ioat_dev_info_get(struct rte_rawdev *dev, rte_rawdev_obj_t dev_info)
116 struct rte_ioat_rawdev_config *cfg = dev_info;
117 struct rte_ioat_rawdev *ioat = dev->dev_private;
120 cfg->ring_size = ioat->ring_size;
123 static const char * const xstat_names[] = {
124 "failed_enqueues", "successful_enqueues",
125 "copies_started", "copies_completed"
129 ioat_xstats_get(const struct rte_rawdev *dev, const unsigned int ids[],
130 uint64_t values[], unsigned int n)
132 const struct rte_ioat_rawdev *ioat = dev->dev_private;
135 for (i = 0; i < n; i++) {
137 case 0: values[i] = ioat->enqueue_failed; break;
138 case 1: values[i] = ioat->enqueued; break;
139 case 2: values[i] = ioat->started; break;
140 case 3: values[i] = ioat->completed; break;
141 default: values[i] = 0; break;
148 ioat_xstats_get_names(const struct rte_rawdev *dev,
149 struct rte_rawdev_xstats_name *names,
155 if (size < RTE_DIM(xstat_names))
156 return RTE_DIM(xstat_names);
158 for (i = 0; i < RTE_DIM(xstat_names); i++)
159 strlcpy(names[i].name, xstat_names[i], sizeof(names[i]));
161 return RTE_DIM(xstat_names);
164 extern int ioat_rawdev_test(uint16_t dev_id);
167 ioat_rawdev_create(const char *name, struct rte_pci_device *dev)
169 static const struct rte_rawdev_ops ioat_rawdev_ops = {
170 .dev_configure = ioat_dev_configure,
171 .dev_start = ioat_dev_start,
172 .dev_stop = ioat_dev_stop,
173 .dev_info_get = ioat_dev_info_get,
174 .xstats_get = ioat_xstats_get,
175 .xstats_get_names = ioat_xstats_get_names,
176 .dev_selftest = ioat_rawdev_test,
179 struct rte_rawdev *rawdev = NULL;
180 struct rte_ioat_rawdev *ioat = NULL;
181 const struct rte_memzone *mz = NULL;
182 char mz_name[RTE_MEMZONE_NAMESIZE];
187 IOAT_PMD_ERR("Invalid name of the device!");
192 /* Allocate device structure */
193 rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct rte_ioat_rawdev),
194 dev->device.numa_node);
195 if (rawdev == NULL) {
196 IOAT_PMD_ERR("Unable to allocate raw device");
201 snprintf(mz_name, sizeof(mz_name), "rawdev%u_private", rawdev->dev_id);
202 mz = rte_memzone_reserve(mz_name, sizeof(struct rte_ioat_rawdev),
203 dev->device.numa_node, RTE_MEMZONE_IOVA_CONTIG);
205 IOAT_PMD_ERR("Unable to reserve memzone for private data\n");
210 rawdev->dev_private = mz->addr;
211 rawdev->dev_ops = &ioat_rawdev_ops;
212 rawdev->device = &dev->device;
213 rawdev->driver_name = dev->device.driver->name;
215 ioat = rawdev->dev_private;
216 ioat->rawdev = rawdev;
218 ioat->regs = dev->mem_resource[0].addr;
220 ioat->desc_ring = NULL;
221 ioat->status_addr = ioat->mz->iova +
222 offsetof(struct rte_ioat_rawdev, status);
224 /* do device initialization - reset and set error behaviour */
225 if (ioat->regs->chancnt != 1)
226 IOAT_PMD_ERR("%s: Channel count == %d\n", __func__,
227 ioat->regs->chancnt);
229 if (ioat->regs->chanctrl & 0x100) { /* locked by someone else */
230 IOAT_PMD_WARN("%s: Channel appears locked\n", __func__);
231 ioat->regs->chanctrl = 0;
234 ioat->regs->chancmd = RTE_IOAT_CHANCMD_SUSPEND;
236 ioat->regs->chancmd = RTE_IOAT_CHANCMD_RESET;
238 while (ioat->regs->chancmd & RTE_IOAT_CHANCMD_RESET) {
239 ioat->regs->chainaddr = 0;
241 if (++retry >= 200) {
242 IOAT_PMD_ERR("%s: cannot reset device. CHANCMD=0x%"PRIx8", CHANSTS=0x%"PRIx64", CHANERR=0x%"PRIx32"\n",
246 ioat->regs->chanerr);
250 ioat->regs->chanctrl = RTE_IOAT_CHANCTRL_ANY_ERR_ABORT_EN |
251 RTE_IOAT_CHANCTRL_ERR_COMPLETION_EN;
257 rte_rawdev_pmd_release(rawdev);
263 ioat_rawdev_destroy(const char *name)
266 struct rte_rawdev *rdev;
269 IOAT_PMD_ERR("Invalid device name");
273 rdev = rte_rawdev_pmd_get_named_dev(name);
275 IOAT_PMD_ERR("Invalid device name (%s)", name);
279 if (rdev->dev_private != NULL) {
280 struct rte_ioat_rawdev *ioat = rdev->dev_private;
281 rdev->dev_private = NULL;
282 rte_memzone_free(ioat->desc_mz);
283 rte_memzone_free(ioat->mz);
286 /* rte_rawdev_close is called by pmd_release */
287 ret = rte_rawdev_pmd_release(rdev);
289 IOAT_PMD_DEBUG("Device cleanup failed");
295 ioat_rawdev_probe(struct rte_pci_driver *drv, struct rte_pci_device *dev)
301 rte_pci_device_name(&dev->addr, name, sizeof(name));
302 IOAT_PMD_INFO("Init %s on NUMA node %d", name, dev->device.numa_node);
304 dev->device.driver = &drv->driver;
305 ret = ioat_rawdev_create(name, dev);
310 ioat_rawdev_remove(struct rte_pci_device *dev)
315 rte_pci_device_name(&dev->addr, name, sizeof(name));
317 IOAT_PMD_INFO("Closing %s on NUMA node %d",
318 name, dev->device.numa_node);
320 ret = ioat_rawdev_destroy(name);
324 static const struct rte_pci_id pci_id_ioat_map[] = {
325 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_SKX) },
326 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX0) },
327 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX1) },
328 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX2) },
329 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX3) },
330 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX4) },
331 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX5) },
332 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX6) },
333 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX7) },
334 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDXE) },
335 { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDXF) },
336 { .vendor_id = 0, /* sentinel */ },
339 static struct rte_pci_driver ioat_pmd_drv = {
340 .id_table = pci_id_ioat_map,
341 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
342 RTE_PCI_DRV_IOVA_AS_VA,
343 .probe = ioat_rawdev_probe,
344 .remove = ioat_rawdev_remove,
347 RTE_PMD_REGISTER_PCI(IOAT_PMD_RAWDEV_NAME, ioat_pmd_drv);
348 RTE_PMD_REGISTER_PCI_TABLE(IOAT_PMD_RAWDEV_NAME, pci_id_ioat_map);
349 RTE_PMD_REGISTER_KMOD_DEP(IOAT_PMD_RAWDEV_NAME, "* igb_uio | uio_pci_generic");
351 RTE_INIT(ioat_pmd_init_log)
353 ioat_pmd_logtype = rte_log_register(IOAT_PMD_LOG_NAME);
354 if (ioat_pmd_logtype >= 0)
355 rte_log_set_level(ioat_pmd_logtype, RTE_LOG_INFO);