xref: /freebsd/sys/dev/qat/qat_hw/qat_c62x/adf_drv.c (revision ae1dc27639c88038d150660c4096753e210aec42)
1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /* Copyright(c) 2007-2025 Intel Corporation */
3 #include "qat_freebsd.h"
4 #include "adf_cfg.h"
5 #include "adf_common_drv.h"
6 #include "adf_accel_devices.h"
7 #include "adf_c62x_hw_data.h"
8 #include "adf_fw_counters.h"
9 #include "adf_cfg_device.h"
10 #include "adf_dbgfs.h"
11 #include <sys/types.h>
12 #include <sys/kernel.h>
13 #include <sys/malloc.h>
14 #include <machine/bus_dma.h>
15 #include <dev/pci/pcireg.h>
16 
17 static MALLOC_DEFINE(M_QAT_C62X, "qat_c62x", "qat_c62x");
18 
19 #define ADF_SYSTEM_DEVICE(device_id)                                           \
20 	{                                                                      \
21 		PCI_VENDOR_ID_INTEL, device_id                                 \
22 	}
23 
24 static const struct pci_device_id adf_pci_tbl[] = { ADF_SYSTEM_DEVICE(
25 							ADF_C62X_PCI_DEVICE_ID),
26 						    {
27 							0,
28 						    } };
29 
30 static int
adf_probe(device_t dev)31 adf_probe(device_t dev)
32 {
33 	const struct pci_device_id *id;
34 
35 	for (id = adf_pci_tbl; id->vendor != 0; id++) {
36 		if (pci_get_vendor(dev) == id->vendor &&
37 		    pci_get_device(dev) == id->device) {
38 			device_set_desc(dev,
39 					"Intel " ADF_C62X_DEVICE_NAME
40 					" QuickAssist");
41 			return BUS_PROBE_GENERIC;
42 		}
43 	}
44 	return ENXIO;
45 }
46 
47 static void
adf_cleanup_accel(struct adf_accel_dev * accel_dev)48 adf_cleanup_accel(struct adf_accel_dev *accel_dev)
49 {
50 	struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
51 	int i;
52 
53 	if (accel_dev->dma_tag)
54 		bus_dma_tag_destroy(accel_dev->dma_tag);
55 	for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
56 		struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
57 
58 		if (bar->virt_addr)
59 			bus_free_resource(accel_pci_dev->pci_dev,
60 					  SYS_RES_MEMORY,
61 					  bar->virt_addr);
62 	}
63 
64 	if (accel_dev->hw_device) {
65 		switch (pci_get_device(accel_pci_dev->pci_dev)) {
66 		case ADF_C62X_PCI_DEVICE_ID:
67 			adf_clean_hw_data_c62x(accel_dev->hw_device);
68 			break;
69 		default:
70 			break;
71 		}
72 		free(accel_dev->hw_device, M_QAT_C62X);
73 		accel_dev->hw_device = NULL;
74 	}
75 	adf_dbgfs_exit(accel_dev);
76 	adf_cfg_dev_remove(accel_dev);
77 	adf_devmgr_rm_dev(accel_dev, NULL);
78 }
79 
80 static int
adf_attach(device_t dev)81 adf_attach(device_t dev)
82 {
83 	struct adf_accel_dev *accel_dev;
84 	struct adf_accel_pci *accel_pci_dev;
85 	struct adf_hw_device_data *hw_data;
86 	unsigned int i, bar_nr;
87 	int ret = 0, rid;
88 	struct adf_cfg_device *cfg_dev = NULL;
89 
90 	/* Set pci MaxPayLoad to 256. Implemented to avoid the issue of
91 	 * Pci-passthrough causing Maxpayload to be reset to 128 bytes
92 	 * when the device is reset. */
93 	if (pci_get_max_payload(dev) != 256)
94 		pci_set_max_payload(dev, 256);
95 
96 	accel_dev = device_get_softc(dev);
97 
98 	mutex_init(&accel_dev->lock);
99 	INIT_LIST_HEAD(&accel_dev->crypto_list);
100 	accel_pci_dev = &accel_dev->accel_pci_dev;
101 	accel_pci_dev->pci_dev = dev;
102 
103 	if (bus_get_domain(dev, &accel_pci_dev->node) != 0)
104 		accel_pci_dev->node = 0;
105 
106 	/* XXX: Revisit if we actually need a devmgr table at all. */
107 
108 	/* Add accel device to accel table.
109 	 * This should be called before adf_cleanup_accel is called */
110 	ret = adf_devmgr_add_dev(accel_dev, NULL);
111 	if (ret) {
112 		device_printf(dev, "Failed to add new accelerator device.\n");
113 		goto out_err_lock;
114 	}
115 
116 	/* Allocate and configure device configuration structure */
117 	hw_data = malloc(sizeof(*hw_data), M_QAT_C62X, M_WAITOK | M_ZERO);
118 
119 	accel_dev->hw_device = hw_data;
120 	adf_init_hw_data_c62x(accel_dev->hw_device);
121 	accel_pci_dev->revid = pci_get_revid(dev);
122 	hw_data->fuses = pci_read_config(dev, ADF_DEVICE_FUSECTL_OFFSET, 4);
123 	if (accel_pci_dev->revid == 0x00) {
124 		device_printf(dev, "A0 stepping is not supported.\n");
125 		ret = ENODEV;
126 		goto out_err;
127 	}
128 
129 	/* Get PPAERUCM values and store */
130 	ret = adf_aer_store_ppaerucm_reg(dev, hw_data);
131 	if (ret)
132 		goto out_err;
133 
134 	/* Get Accelerators and Accelerators Engines masks */
135 	hw_data->accel_mask = hw_data->get_accel_mask(accel_dev);
136 	hw_data->ae_mask = hw_data->get_ae_mask(accel_dev);
137 	hw_data->admin_ae_mask = hw_data->ae_mask;
138 	accel_pci_dev->sku = hw_data->get_sku(hw_data);
139 	/* If the device has no acceleration engines then ignore it. */
140 	if (!hw_data->accel_mask || !hw_data->ae_mask ||
141 	    ((~hw_data->ae_mask) & 0x01)) {
142 		device_printf(dev, "No acceleration units found\n");
143 		ret = ENXIO;
144 		goto out_err;
145 	}
146 
147 	/* Create device configuration table */
148 	ret = adf_cfg_dev_add(accel_dev);
149 	if (ret)
150 		goto out_err;
151 
152 	ret = adf_clock_debugfs_add(accel_dev);
153 	if (ret)
154 		goto out_err;
155 
156 	pci_set_max_read_req(dev, 1024);
157 
158 	ret = bus_dma_tag_create(bus_get_dma_tag(dev),
159 				 1,
160 				 0,
161 				 BUS_SPACE_MAXADDR,
162 				 BUS_SPACE_MAXADDR,
163 				 NULL,
164 				 NULL,
165 				 BUS_SPACE_MAXSIZE,
166 				 /* BUS_SPACE_UNRESTRICTED */ 1,
167 				 BUS_SPACE_MAXSIZE,
168 				 0,
169 				 NULL,
170 				 NULL,
171 				 &accel_dev->dma_tag);
172 	if (ret)
173 		goto out_err;
174 
175 	if (hw_data->get_accel_cap) {
176 		hw_data->accel_capabilities_mask =
177 		    hw_data->get_accel_cap(accel_dev);
178 	}
179 
180 	/* Find and map all the device's BARS */
181 	i = (hw_data->fuses & ADF_DEVICE_FUSECTL_MASK) ? 1 : 0;
182 	for (bar_nr = 0; i < ADF_PCI_MAX_BARS && bar_nr < PCIR_MAX_BAR_0;
183 	     bar_nr++) {
184 		struct adf_bar *bar;
185 
186 		/*
187 		 * XXX: This isn't quite right as it will ignore a BAR
188 		 * that wasn't assigned a valid resource range by the
189 		 * firmware.
190 		 */
191 		rid = PCIR_BAR(bar_nr);
192 		if (bus_get_resource(dev, SYS_RES_MEMORY, rid, NULL, NULL) != 0)
193 			continue;
194 		bar = &accel_pci_dev->pci_bars[i++];
195 		bar->virt_addr = bus_alloc_resource_any(dev,
196 							SYS_RES_MEMORY,
197 							&rid,
198 							RF_ACTIVE);
199 
200 		if (bar->virt_addr == NULL) {
201 			device_printf(dev, "Failed to map BAR %d\n", bar_nr);
202 			ret = ENXIO;
203 			goto out_err;
204 		}
205 		bar->base_addr = rman_get_start(bar->virt_addr);
206 		bar->size = rman_get_size(bar->virt_addr);
207 	}
208 	ret = pci_enable_busmaster(dev);
209 	if (ret)
210 		goto out_err;
211 
212 	adf_dbgfs_init(accel_dev);
213 
214 	if (!accel_dev->hw_device->config_device) {
215 		ret = EFAULT;
216 		goto out_err_disable;
217 	}
218 
219 	ret = accel_dev->hw_device->config_device(accel_dev);
220 	if (ret)
221 		goto out_err_disable;
222 
223 	ret = adf_dev_init(accel_dev);
224 	if (ret)
225 		goto out_dev_shutdown;
226 
227 	ret = adf_dev_start(accel_dev);
228 	if (ret)
229 		goto out_dev_stop;
230 
231 	cfg_dev = accel_dev->cfg->dev;
232 	adf_cfg_device_clear(cfg_dev, accel_dev);
233 	free(cfg_dev, M_QAT);
234 	accel_dev->cfg->dev = NULL;
235 	return ret;
236 out_dev_stop:
237 	adf_dev_stop(accel_dev);
238 out_dev_shutdown:
239 	adf_dev_shutdown(accel_dev);
240 out_err_disable:
241 	pci_disable_busmaster(dev);
242 out_err:
243 	adf_cleanup_accel(accel_dev);
244 out_err_lock:
245 	mutex_destroy(&accel_dev->lock);
246 
247 	return ret;
248 }
249 
250 static int
adf_detach(device_t dev)251 adf_detach(device_t dev)
252 {
253 	struct adf_accel_dev *accel_dev = device_get_softc(dev);
254 
255 	if (adf_dev_stop(accel_dev)) {
256 		device_printf(dev, "Failed to stop QAT accel dev\n");
257 		return EBUSY;
258 	}
259 
260 	adf_dev_shutdown(accel_dev);
261 
262 	pci_disable_busmaster(dev);
263 	adf_cleanup_accel(accel_dev);
264 	mutex_destroy(&accel_dev->lock);
265 
266 	return 0;
267 }
268 
269 static device_method_t adf_methods[] = { DEVMETHOD(device_probe, adf_probe),
270 					 DEVMETHOD(device_attach, adf_attach),
271 					 DEVMETHOD(device_detach, adf_detach),
272 
273 					 DEVMETHOD_END };
274 
275 static driver_t adf_driver = { "qat",
276 			       adf_methods,
277 			       sizeof(struct adf_accel_dev) };
278 
279 DRIVER_MODULE_ORDERED(qat_c62x, pci, adf_driver, NULL, NULL, SI_ORDER_THIRD);
280 MODULE_VERSION(qat_c62x, 1);
281 MODULE_DEPEND(qat_c62x, qat_common, 1, 1, 1);
282 MODULE_DEPEND(qat_c62x, qat_api, 1, 1, 1);
283 MODULE_DEPEND(qat_c62x, linuxkpi, 1, 1, 1);
284