1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2019 HiSilicon Limited. */
3 
4 #include <linux/acpi.h>
5 #include <linux/bitops.h>
6 #include <linux/debugfs.h>
7 #include <linux/init.h>
8 #include <linux/io.h>
9 #include <linux/iommu.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/seq_file.h>
15 #include <linux/topology.h>
16 #include <linux/uacce.h>
17 
18 #include "sec.h"
19 
20 #define SEC_VF_NUM			63
21 #define SEC_QUEUE_NUM_V1		4096
22 #define PCI_DEVICE_ID_HUAWEI_SEC_PF	0xa255
23 
24 #define SEC_BD_ERR_CHK_EN0		0xEFFFFFFF
25 #define SEC_BD_ERR_CHK_EN1		0x7ffff7fd
26 #define SEC_BD_ERR_CHK_EN3		0xffffbfff
27 
28 #define SEC_SQE_SIZE			128
29 #define SEC_PF_DEF_Q_NUM		256
30 #define SEC_PF_DEF_Q_BASE		0
31 #define SEC_CTX_Q_NUM_DEF		2
32 #define SEC_CTX_Q_NUM_MAX		32
33 
34 #define SEC_CTRL_CNT_CLR_CE		0x301120
35 #define SEC_CTRL_CNT_CLR_CE_BIT	BIT(0)
36 #define SEC_CORE_INT_SOURCE		0x301010
37 #define SEC_CORE_INT_MASK		0x301000
38 #define SEC_CORE_INT_STATUS		0x301008
39 #define SEC_CORE_SRAM_ECC_ERR_INFO	0x301C14
40 #define SEC_ECC_NUM			16
41 #define SEC_ECC_MASH			0xFF
42 #define SEC_CORE_INT_DISABLE		0x0
43 
44 #define SEC_RAS_CE_REG			0x301050
45 #define SEC_RAS_FE_REG			0x301054
46 #define SEC_RAS_NFE_REG			0x301058
47 #define SEC_RAS_FE_ENB_MSK		0x0
48 #define SEC_OOO_SHUTDOWN_SEL		0x301014
49 #define SEC_RAS_DISABLE		0x0
50 #define SEC_MEM_START_INIT_REG	0x301100
51 #define SEC_MEM_INIT_DONE_REG		0x301104
52 
53 /* clock gating */
54 #define SEC_CONTROL_REG		0x301200
55 #define SEC_DYNAMIC_GATE_REG		0x30121c
56 #define SEC_CORE_AUTO_GATE		0x30212c
57 #define SEC_DYNAMIC_GATE_EN		0x7fff
58 #define SEC_CORE_AUTO_GATE_EN		GENMASK(3, 0)
59 #define SEC_CLK_GATE_ENABLE		BIT(3)
60 #define SEC_CLK_GATE_DISABLE		(~BIT(3))
61 
62 #define SEC_TRNG_EN_SHIFT		8
63 #define SEC_AXI_SHUTDOWN_ENABLE	BIT(12)
64 #define SEC_AXI_SHUTDOWN_DISABLE	0xFFFFEFFF
65 
66 #define SEC_INTERFACE_USER_CTRL0_REG	0x301220
67 #define SEC_INTERFACE_USER_CTRL1_REG	0x301224
68 #define SEC_SAA_EN_REG			0x301270
69 #define SEC_BD_ERR_CHK_EN_REG0		0x301380
70 #define SEC_BD_ERR_CHK_EN_REG1		0x301384
71 #define SEC_BD_ERR_CHK_EN_REG3		0x30138c
72 
73 #define SEC_USER0_SMMU_NORMAL		(BIT(23) | BIT(15))
74 #define SEC_USER1_SMMU_NORMAL		(BIT(31) | BIT(23) | BIT(15) | BIT(7))
75 #define SEC_USER1_ENABLE_CONTEXT_SSV	BIT(24)
76 #define SEC_USER1_ENABLE_DATA_SSV	BIT(16)
77 #define SEC_USER1_WB_CONTEXT_SSV	BIT(8)
78 #define SEC_USER1_WB_DATA_SSV		BIT(0)
79 #define SEC_USER1_SVA_SET		(SEC_USER1_ENABLE_CONTEXT_SSV | \
80 					SEC_USER1_ENABLE_DATA_SSV | \
81 					SEC_USER1_WB_CONTEXT_SSV |  \
82 					SEC_USER1_WB_DATA_SSV)
83 #define SEC_USER1_SMMU_SVA		(SEC_USER1_SMMU_NORMAL | SEC_USER1_SVA_SET)
84 #define SEC_USER1_SMMU_MASK		(~SEC_USER1_SVA_SET)
85 #define SEC_INTERFACE_USER_CTRL0_REG_V3	0x302220
86 #define SEC_INTERFACE_USER_CTRL1_REG_V3	0x302224
87 #define SEC_USER1_SMMU_NORMAL_V3	(BIT(23) | BIT(17) | BIT(11) | BIT(5))
88 #define SEC_USER1_SMMU_MASK_V3		0xFF79E79E
89 #define SEC_CORE_INT_STATUS_M_ECC	BIT(2)
90 
91 #define SEC_PREFETCH_CFG		0x301130
92 #define SEC_SVA_TRANS			0x301EC4
93 #define SEC_PREFETCH_ENABLE		(~(BIT(0) | BIT(1) | BIT(11)))
94 #define SEC_PREFETCH_DISABLE		BIT(1)
95 #define SEC_SVA_DISABLE_READY		(BIT(7) | BIT(11))
96 
97 #define SEC_DELAY_10_US			10
98 #define SEC_POLL_TIMEOUT_US		1000
99 #define SEC_DBGFS_VAL_MAX_LEN		20
100 #define SEC_SINGLE_PORT_MAX_TRANS	0x2060
101 
102 #define SEC_SQE_MASK_OFFSET		64
103 #define SEC_SQE_MASK_LEN		48
104 #define SEC_SHAPER_TYPE_RATE		400
105 
106 #define SEC_DFX_BASE		0x301000
107 #define SEC_DFX_CORE		0x302100
108 #define SEC_DFX_COMMON1		0x301600
109 #define SEC_DFX_COMMON2		0x301C00
110 #define SEC_DFX_BASE_LEN		0x9D
111 #define SEC_DFX_CORE_LEN		0x32B
112 #define SEC_DFX_COMMON1_LEN		0x45
113 #define SEC_DFX_COMMON2_LEN		0xBA
114 
115 #define SEC_ALG_BITMAP_SHIFT		32
116 
117 #define SEC_CIPHER_BITMAP		(GENMASK_ULL(5, 0) | GENMASK_ULL(16, 12) | \
118 					GENMASK(24, 21))
119 #define SEC_DIGEST_BITMAP		(GENMASK_ULL(11, 8) | GENMASK_ULL(20, 19) | \
120 					GENMASK_ULL(42, 25))
121 #define SEC_AEAD_BITMAP			(GENMASK_ULL(7, 6) | GENMASK_ULL(18, 17) | \
122 					GENMASK_ULL(45, 43))
123 
124 struct sec_hw_error {
125 	u32 int_msk;
126 	const char *msg;
127 };
128 
129 struct sec_dfx_item {
130 	const char *name;
131 	u32 offset;
132 };
133 
134 static const char sec_name[] = "hisi_sec2";
135 static struct dentry *sec_debugfs_root;
136 
137 static struct hisi_qm_list sec_devices = {
138 	.register_to_crypto	= sec_register_to_crypto,
139 	.unregister_from_crypto	= sec_unregister_from_crypto,
140 };
141 
142 static const struct hisi_qm_cap_info sec_basic_info[] = {
143 	{SEC_QM_NFE_MASK_CAP,   0x3124, 0, GENMASK(31, 0), 0x0, 0x1C77, 0x7C77},
144 	{SEC_QM_RESET_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0xC77, 0x6C77},
145 	{SEC_QM_OOO_SHUTDOWN_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0x4, 0x6C77},
146 	{SEC_QM_CE_MASK_CAP,    0x312C, 0, GENMASK(31, 0), 0x0, 0x8, 0x8},
147 	{SEC_NFE_MASK_CAP,      0x3130, 0, GENMASK(31, 0), 0x0, 0x177, 0x60177},
148 	{SEC_RESET_MASK_CAP,    0x3134, 0, GENMASK(31, 0), 0x0, 0x177, 0x177},
149 	{SEC_OOO_SHUTDOWN_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x4, 0x177},
150 	{SEC_CE_MASK_CAP,       0x3138, 0, GENMASK(31, 0), 0x0, 0x88, 0xC088},
151 	{SEC_CLUSTER_NUM_CAP, 0x313c, 20, GENMASK(3, 0), 0x1, 0x1, 0x1},
152 	{SEC_CORE_TYPE_NUM_CAP, 0x313c, 16, GENMASK(3, 0), 0x1, 0x1, 0x1},
153 	{SEC_CORE_NUM_CAP, 0x313c, 8, GENMASK(7, 0), 0x4, 0x4, 0x4},
154 	{SEC_CORES_PER_CLUSTER_NUM_CAP, 0x313c, 0, GENMASK(7, 0), 0x4, 0x4, 0x4},
155 	{SEC_CORE_ENABLE_BITMAP, 0x3140, 32, GENMASK(31, 0), 0x17F, 0x17F, 0xF},
156 	{SEC_DRV_ALG_BITMAP_LOW, 0x3144, 0, GENMASK(31, 0), 0x18050CB, 0x18050CB, 0x187F0FF},
157 	{SEC_DRV_ALG_BITMAP_HIGH, 0x3148, 0, GENMASK(31, 0), 0x395C, 0x395C, 0x395C},
158 	{SEC_DEV_ALG_BITMAP_LOW, 0x314c, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF},
159 	{SEC_DEV_ALG_BITMAP_HIGH, 0x3150, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF},
160 	{SEC_CORE1_ALG_BITMAP_LOW, 0x3154, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF},
161 	{SEC_CORE1_ALG_BITMAP_HIGH, 0x3158, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF},
162 	{SEC_CORE2_ALG_BITMAP_LOW, 0x315c, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF},
163 	{SEC_CORE2_ALG_BITMAP_HIGH, 0x3160, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF},
164 	{SEC_CORE3_ALG_BITMAP_LOW, 0x3164, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF},
165 	{SEC_CORE3_ALG_BITMAP_HIGH, 0x3168, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF},
166 	{SEC_CORE4_ALG_BITMAP_LOW, 0x316c, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF},
167 	{SEC_CORE4_ALG_BITMAP_HIGH, 0x3170, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF},
168 };
169 
170 static const u32 sec_pre_store_caps[] = {
171 	SEC_DRV_ALG_BITMAP_LOW,
172 	SEC_DRV_ALG_BITMAP_HIGH,
173 	SEC_DEV_ALG_BITMAP_LOW,
174 	SEC_DEV_ALG_BITMAP_HIGH,
175 };
176 
177 static const struct qm_dev_alg sec_dev_algs[] = { {
178 		.alg_msk = SEC_CIPHER_BITMAP,
179 		.alg = "cipher\n",
180 	}, {
181 		.alg_msk = SEC_DIGEST_BITMAP,
182 		.alg = "digest\n",
183 	}, {
184 		.alg_msk = SEC_AEAD_BITMAP,
185 		.alg = "aead\n",
186 	},
187 };
188 
189 static const struct sec_hw_error sec_hw_errors[] = {
190 	{
191 		.int_msk = BIT(0),
192 		.msg = "sec_axi_rresp_err_rint"
193 	},
194 	{
195 		.int_msk = BIT(1),
196 		.msg = "sec_axi_bresp_err_rint"
197 	},
198 	{
199 		.int_msk = BIT(2),
200 		.msg = "sec_ecc_2bit_err_rint"
201 	},
202 	{
203 		.int_msk = BIT(3),
204 		.msg = "sec_ecc_1bit_err_rint"
205 	},
206 	{
207 		.int_msk = BIT(4),
208 		.msg = "sec_req_trng_timeout_rint"
209 	},
210 	{
211 		.int_msk = BIT(5),
212 		.msg = "sec_fsm_hbeat_rint"
213 	},
214 	{
215 		.int_msk = BIT(6),
216 		.msg = "sec_channel_req_rng_timeout_rint"
217 	},
218 	{
219 		.int_msk = BIT(7),
220 		.msg = "sec_bd_err_rint"
221 	},
222 	{
223 		.int_msk = BIT(8),
224 		.msg = "sec_chain_buff_err_rint"
225 	},
226 	{
227 		.int_msk = BIT(14),
228 		.msg = "sec_no_secure_access"
229 	},
230 	{
231 		.int_msk = BIT(15),
232 		.msg = "sec_wrapping_key_auth_err"
233 	},
234 	{
235 		.int_msk = BIT(16),
236 		.msg = "sec_km_key_crc_fail"
237 	},
238 	{
239 		.int_msk = BIT(17),
240 		.msg = "sec_axi_poison_err"
241 	},
242 	{
243 		.int_msk = BIT(18),
244 		.msg = "sec_sva_err"
245 	},
246 	{}
247 };
248 
249 static const char * const sec_dbg_file_name[] = {
250 	[SEC_CLEAR_ENABLE] = "clear_enable",
251 };
252 
253 static struct sec_dfx_item sec_dfx_labels[] = {
254 	{"send_cnt", offsetof(struct sec_dfx, send_cnt)},
255 	{"recv_cnt", offsetof(struct sec_dfx, recv_cnt)},
256 	{"send_busy_cnt", offsetof(struct sec_dfx, send_busy_cnt)},
257 	{"recv_busy_cnt", offsetof(struct sec_dfx, recv_busy_cnt)},
258 	{"err_bd_cnt", offsetof(struct sec_dfx, err_bd_cnt)},
259 	{"invalid_req_cnt", offsetof(struct sec_dfx, invalid_req_cnt)},
260 	{"done_flag_cnt", offsetof(struct sec_dfx, done_flag_cnt)},
261 };
262 
263 static const struct debugfs_reg32 sec_dfx_regs[] = {
264 	{"SEC_PF_ABNORMAL_INT_SOURCE    ",  0x301010},
265 	{"SEC_SAA_EN                    ",  0x301270},
266 	{"SEC_BD_LATENCY_MIN            ",  0x301600},
267 	{"SEC_BD_LATENCY_MAX            ",  0x301608},
268 	{"SEC_BD_LATENCY_AVG            ",  0x30160C},
269 	{"SEC_BD_NUM_IN_SAA0            ",  0x301670},
270 	{"SEC_BD_NUM_IN_SAA1            ",  0x301674},
271 	{"SEC_BD_NUM_IN_SEC             ",  0x301680},
272 	{"SEC_ECC_1BIT_CNT              ",  0x301C00},
273 	{"SEC_ECC_1BIT_INFO             ",  0x301C04},
274 	{"SEC_ECC_2BIT_CNT              ",  0x301C10},
275 	{"SEC_ECC_2BIT_INFO             ",  0x301C14},
276 	{"SEC_BD_SAA0                   ",  0x301C20},
277 	{"SEC_BD_SAA1                   ",  0x301C24},
278 	{"SEC_BD_SAA2                   ",  0x301C28},
279 	{"SEC_BD_SAA3                   ",  0x301C2C},
280 	{"SEC_BD_SAA4                   ",  0x301C30},
281 	{"SEC_BD_SAA5                   ",  0x301C34},
282 	{"SEC_BD_SAA6                   ",  0x301C38},
283 	{"SEC_BD_SAA7                   ",  0x301C3C},
284 	{"SEC_BD_SAA8                   ",  0x301C40},
285 };
286 
287 /* define the SEC's dfx regs region and region length */
288 static struct dfx_diff_registers sec_diff_regs[] = {
289 	{
290 		.reg_offset = SEC_DFX_BASE,
291 		.reg_len = SEC_DFX_BASE_LEN,
292 	}, {
293 		.reg_offset = SEC_DFX_COMMON1,
294 		.reg_len = SEC_DFX_COMMON1_LEN,
295 	}, {
296 		.reg_offset = SEC_DFX_COMMON2,
297 		.reg_len = SEC_DFX_COMMON2_LEN,
298 	}, {
299 		.reg_offset = SEC_DFX_CORE,
300 		.reg_len = SEC_DFX_CORE_LEN,
301 	},
302 };
303 
sec_diff_regs_show(struct seq_file * s,void * unused)304 static int sec_diff_regs_show(struct seq_file *s, void *unused)
305 {
306 	struct hisi_qm *qm = s->private;
307 
308 	hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.acc_diff_regs,
309 					ARRAY_SIZE(sec_diff_regs));
310 
311 	return 0;
312 }
313 DEFINE_SHOW_ATTRIBUTE(sec_diff_regs);
314 
315 static bool pf_q_num_flag;
sec_pf_q_num_set(const char * val,const struct kernel_param * kp)316 static int sec_pf_q_num_set(const char *val, const struct kernel_param *kp)
317 {
318 	pf_q_num_flag = true;
319 
320 	return q_num_set(val, kp, PCI_DEVICE_ID_HUAWEI_SEC_PF);
321 }
322 
323 static const struct kernel_param_ops sec_pf_q_num_ops = {
324 	.set = sec_pf_q_num_set,
325 	.get = param_get_int,
326 };
327 
328 static u32 pf_q_num = SEC_PF_DEF_Q_NUM;
329 module_param_cb(pf_q_num, &sec_pf_q_num_ops, &pf_q_num, 0444);
330 MODULE_PARM_DESC(pf_q_num, "Number of queues in PF(v1 2-4096, v2 2-1024)");
331 
sec_ctx_q_num_set(const char * val,const struct kernel_param * kp)332 static int sec_ctx_q_num_set(const char *val, const struct kernel_param *kp)
333 {
334 	u32 ctx_q_num;
335 	int ret;
336 
337 	if (!val)
338 		return -EINVAL;
339 
340 	ret = kstrtou32(val, 10, &ctx_q_num);
341 	if (ret)
342 		return -EINVAL;
343 
344 	if (!ctx_q_num || ctx_q_num > SEC_CTX_Q_NUM_MAX || ctx_q_num & 0x1) {
345 		pr_err("ctx queue num[%u] is invalid!\n", ctx_q_num);
346 		return -EINVAL;
347 	}
348 
349 	return param_set_int(val, kp);
350 }
351 
352 static const struct kernel_param_ops sec_ctx_q_num_ops = {
353 	.set = sec_ctx_q_num_set,
354 	.get = param_get_int,
355 };
356 static u32 ctx_q_num = SEC_CTX_Q_NUM_DEF;
357 module_param_cb(ctx_q_num, &sec_ctx_q_num_ops, &ctx_q_num, 0444);
358 MODULE_PARM_DESC(ctx_q_num, "Queue num in ctx (2 default, 2, 4, ..., 32)");
359 
360 static const struct kernel_param_ops vfs_num_ops = {
361 	.set = vfs_num_set,
362 	.get = param_get_int,
363 };
364 
365 static u32 vfs_num;
366 module_param_cb(vfs_num, &vfs_num_ops, &vfs_num, 0444);
367 MODULE_PARM_DESC(vfs_num, "Number of VFs to enable(1-63), 0(default)");
368 
sec_destroy_qps(struct hisi_qp ** qps,int qp_num)369 void sec_destroy_qps(struct hisi_qp **qps, int qp_num)
370 {
371 	hisi_qm_free_qps(qps, qp_num);
372 	kfree(qps);
373 }
374 
sec_create_qps(void)375 struct hisi_qp **sec_create_qps(void)
376 {
377 	int node = cpu_to_node(smp_processor_id());
378 	u32 ctx_num = ctx_q_num;
379 	struct hisi_qp **qps;
380 	int ret;
381 
382 	qps = kcalloc(ctx_num, sizeof(struct hisi_qp *), GFP_KERNEL);
383 	if (!qps)
384 		return NULL;
385 
386 	ret = hisi_qm_alloc_qps_node(&sec_devices, ctx_num, 0, node, qps);
387 	if (!ret)
388 		return qps;
389 
390 	kfree(qps);
391 	return NULL;
392 }
393 
sec_get_alg_bitmap(struct hisi_qm * qm,u32 high,u32 low)394 u64 sec_get_alg_bitmap(struct hisi_qm *qm, u32 high, u32 low)
395 {
396 	u32 cap_val_h, cap_val_l;
397 
398 	cap_val_h = qm->cap_tables.dev_cap_table[high].cap_val;
399 	cap_val_l = qm->cap_tables.dev_cap_table[low].cap_val;
400 
401 	return ((u64)cap_val_h << SEC_ALG_BITMAP_SHIFT) | (u64)cap_val_l;
402 }
403 
404 static const struct kernel_param_ops sec_uacce_mode_ops = {
405 	.set = uacce_mode_set,
406 	.get = param_get_int,
407 };
408 
409 /*
410  * uacce_mode = 0 means sec only register to crypto,
411  * uacce_mode = 1 means sec both register to crypto and uacce.
412  */
413 static u32 uacce_mode = UACCE_MODE_NOUACCE;
414 module_param_cb(uacce_mode, &sec_uacce_mode_ops, &uacce_mode, 0444);
415 MODULE_PARM_DESC(uacce_mode, UACCE_MODE_DESC);
416 
417 static const struct pci_device_id sec_dev_ids[] = {
418 	{ PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_SEC_PF) },
419 	{ PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_SEC_VF) },
420 	{ 0, }
421 };
422 MODULE_DEVICE_TABLE(pci, sec_dev_ids);
423 
sec_set_endian(struct hisi_qm * qm)424 static void sec_set_endian(struct hisi_qm *qm)
425 {
426 	u32 reg;
427 
428 	reg = readl_relaxed(qm->io_base + SEC_CONTROL_REG);
429 	reg &= ~(BIT(1) | BIT(0));
430 	if (!IS_ENABLED(CONFIG_64BIT))
431 		reg |= BIT(1);
432 
433 	if (!IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN))
434 		reg |= BIT(0);
435 
436 	writel_relaxed(reg, qm->io_base + SEC_CONTROL_REG);
437 }
438 
sec_engine_sva_config(struct hisi_qm * qm)439 static void sec_engine_sva_config(struct hisi_qm *qm)
440 {
441 	u32 reg;
442 
443 	if (qm->ver > QM_HW_V2) {
444 		reg = readl_relaxed(qm->io_base +
445 				SEC_INTERFACE_USER_CTRL0_REG_V3);
446 		reg |= SEC_USER0_SMMU_NORMAL;
447 		writel_relaxed(reg, qm->io_base +
448 				SEC_INTERFACE_USER_CTRL0_REG_V3);
449 
450 		reg = readl_relaxed(qm->io_base +
451 				SEC_INTERFACE_USER_CTRL1_REG_V3);
452 		reg &= SEC_USER1_SMMU_MASK_V3;
453 		reg |= SEC_USER1_SMMU_NORMAL_V3;
454 		writel_relaxed(reg, qm->io_base +
455 				SEC_INTERFACE_USER_CTRL1_REG_V3);
456 	} else {
457 		reg = readl_relaxed(qm->io_base +
458 				SEC_INTERFACE_USER_CTRL0_REG);
459 		reg |= SEC_USER0_SMMU_NORMAL;
460 		writel_relaxed(reg, qm->io_base +
461 				SEC_INTERFACE_USER_CTRL0_REG);
462 		reg = readl_relaxed(qm->io_base +
463 				SEC_INTERFACE_USER_CTRL1_REG);
464 		reg &= SEC_USER1_SMMU_MASK;
465 		if (qm->use_sva)
466 			reg |= SEC_USER1_SMMU_SVA;
467 		else
468 			reg |= SEC_USER1_SMMU_NORMAL;
469 		writel_relaxed(reg, qm->io_base +
470 				SEC_INTERFACE_USER_CTRL1_REG);
471 	}
472 }
473 
sec_open_sva_prefetch(struct hisi_qm * qm)474 static void sec_open_sva_prefetch(struct hisi_qm *qm)
475 {
476 	u32 val;
477 	int ret;
478 
479 	if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps))
480 		return;
481 
482 	/* Enable prefetch */
483 	val = readl_relaxed(qm->io_base + SEC_PREFETCH_CFG);
484 	val &= SEC_PREFETCH_ENABLE;
485 	writel(val, qm->io_base + SEC_PREFETCH_CFG);
486 
487 	ret = readl_relaxed_poll_timeout(qm->io_base + SEC_PREFETCH_CFG,
488 					 val, !(val & SEC_PREFETCH_DISABLE),
489 					 SEC_DELAY_10_US, SEC_POLL_TIMEOUT_US);
490 	if (ret)
491 		pci_err(qm->pdev, "failed to open sva prefetch\n");
492 }
493 
sec_close_sva_prefetch(struct hisi_qm * qm)494 static void sec_close_sva_prefetch(struct hisi_qm *qm)
495 {
496 	u32 val;
497 	int ret;
498 
499 	if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps))
500 		return;
501 
502 	val = readl_relaxed(qm->io_base + SEC_PREFETCH_CFG);
503 	val |= SEC_PREFETCH_DISABLE;
504 	writel(val, qm->io_base + SEC_PREFETCH_CFG);
505 
506 	ret = readl_relaxed_poll_timeout(qm->io_base + SEC_SVA_TRANS,
507 					 val, !(val & SEC_SVA_DISABLE_READY),
508 					 SEC_DELAY_10_US, SEC_POLL_TIMEOUT_US);
509 	if (ret)
510 		pci_err(qm->pdev, "failed to close sva prefetch\n");
511 }
512 
sec_enable_clock_gate(struct hisi_qm * qm)513 static void sec_enable_clock_gate(struct hisi_qm *qm)
514 {
515 	u32 val;
516 
517 	if (qm->ver < QM_HW_V3)
518 		return;
519 
520 	val = readl_relaxed(qm->io_base + SEC_CONTROL_REG);
521 	val |= SEC_CLK_GATE_ENABLE;
522 	writel_relaxed(val, qm->io_base + SEC_CONTROL_REG);
523 
524 	val = readl(qm->io_base + SEC_DYNAMIC_GATE_REG);
525 	val |= SEC_DYNAMIC_GATE_EN;
526 	writel(val, qm->io_base + SEC_DYNAMIC_GATE_REG);
527 
528 	val = readl(qm->io_base + SEC_CORE_AUTO_GATE);
529 	val |= SEC_CORE_AUTO_GATE_EN;
530 	writel(val, qm->io_base + SEC_CORE_AUTO_GATE);
531 }
532 
sec_disable_clock_gate(struct hisi_qm * qm)533 static void sec_disable_clock_gate(struct hisi_qm *qm)
534 {
535 	u32 val;
536 
537 	/* Kunpeng920 needs to close clock gating */
538 	val = readl_relaxed(qm->io_base + SEC_CONTROL_REG);
539 	val &= SEC_CLK_GATE_DISABLE;
540 	writel_relaxed(val, qm->io_base + SEC_CONTROL_REG);
541 }
542 
sec_engine_init(struct hisi_qm * qm)543 static int sec_engine_init(struct hisi_qm *qm)
544 {
545 	int ret;
546 	u32 reg;
547 
548 	/* disable clock gate control before mem init */
549 	sec_disable_clock_gate(qm);
550 
551 	writel_relaxed(0x1, qm->io_base + SEC_MEM_START_INIT_REG);
552 
553 	ret = readl_relaxed_poll_timeout(qm->io_base + SEC_MEM_INIT_DONE_REG,
554 					 reg, reg & 0x1, SEC_DELAY_10_US,
555 					 SEC_POLL_TIMEOUT_US);
556 	if (ret) {
557 		pci_err(qm->pdev, "fail to init sec mem\n");
558 		return ret;
559 	}
560 
561 	reg = readl_relaxed(qm->io_base + SEC_CONTROL_REG);
562 	reg |= (0x1 << SEC_TRNG_EN_SHIFT);
563 	writel_relaxed(reg, qm->io_base + SEC_CONTROL_REG);
564 
565 	sec_engine_sva_config(qm);
566 
567 	writel(SEC_SINGLE_PORT_MAX_TRANS,
568 	       qm->io_base + AM_CFG_SINGLE_PORT_MAX_TRANS);
569 
570 	reg = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_CORE_ENABLE_BITMAP, qm->cap_ver);
571 	writel(reg, qm->io_base + SEC_SAA_EN_REG);
572 
573 	if (qm->ver < QM_HW_V3) {
574 		/* HW V2 enable sm4 extra mode, as ctr/ecb */
575 		writel_relaxed(SEC_BD_ERR_CHK_EN0,
576 			       qm->io_base + SEC_BD_ERR_CHK_EN_REG0);
577 
578 		/* HW V2 enable sm4 xts mode multiple iv */
579 		writel_relaxed(SEC_BD_ERR_CHK_EN1,
580 			       qm->io_base + SEC_BD_ERR_CHK_EN_REG1);
581 		writel_relaxed(SEC_BD_ERR_CHK_EN3,
582 			       qm->io_base + SEC_BD_ERR_CHK_EN_REG3);
583 	}
584 
585 	/* config endian */
586 	sec_set_endian(qm);
587 
588 	sec_enable_clock_gate(qm);
589 
590 	return 0;
591 }
592 
sec_set_user_domain_and_cache(struct hisi_qm * qm)593 static int sec_set_user_domain_and_cache(struct hisi_qm *qm)
594 {
595 	/* qm user domain */
596 	writel(AXUSER_BASE, qm->io_base + QM_ARUSER_M_CFG_1);
597 	writel(ARUSER_M_CFG_ENABLE, qm->io_base + QM_ARUSER_M_CFG_ENABLE);
598 	writel(AXUSER_BASE, qm->io_base + QM_AWUSER_M_CFG_1);
599 	writel(AWUSER_M_CFG_ENABLE, qm->io_base + QM_AWUSER_M_CFG_ENABLE);
600 	writel(WUSER_M_CFG_ENABLE, qm->io_base + QM_WUSER_M_CFG_ENABLE);
601 
602 	/* qm cache */
603 	writel(AXI_M_CFG, qm->io_base + QM_AXI_M_CFG);
604 	writel(AXI_M_CFG_ENABLE, qm->io_base + QM_AXI_M_CFG_ENABLE);
605 
606 	/* disable FLR triggered by BME(bus master enable) */
607 	writel(PEH_AXUSER_CFG, qm->io_base + QM_PEH_AXUSER_CFG);
608 	writel(PEH_AXUSER_CFG_ENABLE, qm->io_base + QM_PEH_AXUSER_CFG_ENABLE);
609 
610 	/* enable sqc,cqc writeback */
611 	writel(SQC_CACHE_ENABLE | CQC_CACHE_ENABLE | SQC_CACHE_WB_ENABLE |
612 	       CQC_CACHE_WB_ENABLE | FIELD_PREP(SQC_CACHE_WB_THRD, 1) |
613 	       FIELD_PREP(CQC_CACHE_WB_THRD, 1), qm->io_base + QM_CACHE_CTL);
614 
615 	return sec_engine_init(qm);
616 }
617 
618 /* sec_debug_regs_clear() - clear the sec debug regs */
sec_debug_regs_clear(struct hisi_qm * qm)619 static void sec_debug_regs_clear(struct hisi_qm *qm)
620 {
621 	int i;
622 
623 	/* clear sec dfx regs */
624 	writel(0x1, qm->io_base + SEC_CTRL_CNT_CLR_CE);
625 	for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++)
626 		readl(qm->io_base + sec_dfx_regs[i].offset);
627 
628 	/* clear rdclr_en */
629 	writel(0x0, qm->io_base + SEC_CTRL_CNT_CLR_CE);
630 
631 	hisi_qm_debug_regs_clear(qm);
632 }
633 
sec_master_ooo_ctrl(struct hisi_qm * qm,bool enable)634 static void sec_master_ooo_ctrl(struct hisi_qm *qm, bool enable)
635 {
636 	u32 val1, val2;
637 
638 	val1 = readl(qm->io_base + SEC_CONTROL_REG);
639 	if (enable) {
640 		val1 |= SEC_AXI_SHUTDOWN_ENABLE;
641 		val2 = hisi_qm_get_hw_info(qm, sec_basic_info,
642 					   SEC_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver);
643 	} else {
644 		val1 &= SEC_AXI_SHUTDOWN_DISABLE;
645 		val2 = 0x0;
646 	}
647 
648 	if (qm->ver > QM_HW_V2)
649 		writel(val2, qm->io_base + SEC_OOO_SHUTDOWN_SEL);
650 
651 	writel(val1, qm->io_base + SEC_CONTROL_REG);
652 }
653 
sec_hw_error_enable(struct hisi_qm * qm)654 static void sec_hw_error_enable(struct hisi_qm *qm)
655 {
656 	u32 ce, nfe;
657 
658 	if (qm->ver == QM_HW_V1) {
659 		writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK);
660 		pci_info(qm->pdev, "V1 not support hw error handle\n");
661 		return;
662 	}
663 
664 	ce = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_CE_MASK_CAP, qm->cap_ver);
665 	nfe = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_NFE_MASK_CAP, qm->cap_ver);
666 
667 	/* clear SEC hw error source if having */
668 	writel(ce | nfe | SEC_RAS_FE_ENB_MSK, qm->io_base + SEC_CORE_INT_SOURCE);
669 
670 	/* enable RAS int */
671 	writel(ce, qm->io_base + SEC_RAS_CE_REG);
672 	writel(SEC_RAS_FE_ENB_MSK, qm->io_base + SEC_RAS_FE_REG);
673 	writel(nfe, qm->io_base + SEC_RAS_NFE_REG);
674 
675 	/* enable SEC block master OOO when nfe occurs on Kunpeng930 */
676 	sec_master_ooo_ctrl(qm, true);
677 
678 	/* enable SEC hw error interrupts */
679 	writel(ce | nfe | SEC_RAS_FE_ENB_MSK, qm->io_base + SEC_CORE_INT_MASK);
680 }
681 
sec_hw_error_disable(struct hisi_qm * qm)682 static void sec_hw_error_disable(struct hisi_qm *qm)
683 {
684 	/* disable SEC hw error interrupts */
685 	writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK);
686 
687 	/* disable SEC block master OOO when nfe occurs on Kunpeng930 */
688 	sec_master_ooo_ctrl(qm, false);
689 
690 	/* disable RAS int */
691 	writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_CE_REG);
692 	writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_FE_REG);
693 	writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_NFE_REG);
694 }
695 
sec_clear_enable_read(struct hisi_qm * qm)696 static u32 sec_clear_enable_read(struct hisi_qm *qm)
697 {
698 	return readl(qm->io_base + SEC_CTRL_CNT_CLR_CE) &
699 			SEC_CTRL_CNT_CLR_CE_BIT;
700 }
701 
sec_clear_enable_write(struct hisi_qm * qm,u32 val)702 static int sec_clear_enable_write(struct hisi_qm *qm, u32 val)
703 {
704 	u32 tmp;
705 
706 	if (val != 1 && val)
707 		return -EINVAL;
708 
709 	tmp = (readl(qm->io_base + SEC_CTRL_CNT_CLR_CE) &
710 	       ~SEC_CTRL_CNT_CLR_CE_BIT) | val;
711 	writel(tmp, qm->io_base + SEC_CTRL_CNT_CLR_CE);
712 
713 	return 0;
714 }
715 
sec_debug_read(struct file * filp,char __user * buf,size_t count,loff_t * pos)716 static ssize_t sec_debug_read(struct file *filp, char __user *buf,
717 			       size_t count, loff_t *pos)
718 {
719 	struct sec_debug_file *file = filp->private_data;
720 	char tbuf[SEC_DBGFS_VAL_MAX_LEN];
721 	struct hisi_qm *qm = file->qm;
722 	u32 val;
723 	int ret;
724 
725 	ret = hisi_qm_get_dfx_access(qm);
726 	if (ret)
727 		return ret;
728 
729 	spin_lock_irq(&file->lock);
730 
731 	switch (file->index) {
732 	case SEC_CLEAR_ENABLE:
733 		val = sec_clear_enable_read(qm);
734 		break;
735 	default:
736 		goto err_input;
737 	}
738 
739 	spin_unlock_irq(&file->lock);
740 
741 	hisi_qm_put_dfx_access(qm);
742 	ret = snprintf(tbuf, SEC_DBGFS_VAL_MAX_LEN, "%u\n", val);
743 	return simple_read_from_buffer(buf, count, pos, tbuf, ret);
744 
745 err_input:
746 	spin_unlock_irq(&file->lock);
747 	hisi_qm_put_dfx_access(qm);
748 	return -EINVAL;
749 }
750 
sec_debug_write(struct file * filp,const char __user * buf,size_t count,loff_t * pos)751 static ssize_t sec_debug_write(struct file *filp, const char __user *buf,
752 			       size_t count, loff_t *pos)
753 {
754 	struct sec_debug_file *file = filp->private_data;
755 	char tbuf[SEC_DBGFS_VAL_MAX_LEN];
756 	struct hisi_qm *qm = file->qm;
757 	unsigned long val;
758 	int len, ret;
759 
760 	if (*pos != 0)
761 		return 0;
762 
763 	if (count >= SEC_DBGFS_VAL_MAX_LEN)
764 		return -ENOSPC;
765 
766 	len = simple_write_to_buffer(tbuf, SEC_DBGFS_VAL_MAX_LEN - 1,
767 				     pos, buf, count);
768 	if (len < 0)
769 		return len;
770 
771 	tbuf[len] = '\0';
772 	if (kstrtoul(tbuf, 0, &val))
773 		return -EFAULT;
774 
775 	ret = hisi_qm_get_dfx_access(qm);
776 	if (ret)
777 		return ret;
778 
779 	spin_lock_irq(&file->lock);
780 
781 	switch (file->index) {
782 	case SEC_CLEAR_ENABLE:
783 		ret = sec_clear_enable_write(qm, val);
784 		if (ret)
785 			goto err_input;
786 		break;
787 	default:
788 		ret = -EINVAL;
789 		goto err_input;
790 	}
791 
792 	ret = count;
793 
794  err_input:
795 	spin_unlock_irq(&file->lock);
796 	hisi_qm_put_dfx_access(qm);
797 	return ret;
798 }
799 
800 static const struct file_operations sec_dbg_fops = {
801 	.owner = THIS_MODULE,
802 	.open = simple_open,
803 	.read = sec_debug_read,
804 	.write = sec_debug_write,
805 };
806 
sec_debugfs_atomic64_get(void * data,u64 * val)807 static int sec_debugfs_atomic64_get(void *data, u64 *val)
808 {
809 	*val = atomic64_read((atomic64_t *)data);
810 
811 	return 0;
812 }
813 
sec_debugfs_atomic64_set(void * data,u64 val)814 static int sec_debugfs_atomic64_set(void *data, u64 val)
815 {
816 	if (val)
817 		return -EINVAL;
818 
819 	atomic64_set((atomic64_t *)data, 0);
820 
821 	return 0;
822 }
823 
824 DEFINE_DEBUGFS_ATTRIBUTE(sec_atomic64_ops, sec_debugfs_atomic64_get,
825 			 sec_debugfs_atomic64_set, "%lld\n");
826 
sec_regs_show(struct seq_file * s,void * unused)827 static int sec_regs_show(struct seq_file *s, void *unused)
828 {
829 	hisi_qm_regs_dump(s, s->private);
830 
831 	return 0;
832 }
833 
834 DEFINE_SHOW_ATTRIBUTE(sec_regs);
835 
sec_core_debug_init(struct hisi_qm * qm)836 static int sec_core_debug_init(struct hisi_qm *qm)
837 {
838 	struct dfx_diff_registers *sec_regs = qm->debug.acc_diff_regs;
839 	struct sec_dev *sec = container_of(qm, struct sec_dev, qm);
840 	struct device *dev = &qm->pdev->dev;
841 	struct sec_dfx *dfx = &sec->debug.dfx;
842 	struct debugfs_regset32 *regset;
843 	struct dentry *tmp_d;
844 	int i;
845 
846 	tmp_d = debugfs_create_dir("sec_dfx", qm->debug.debug_root);
847 
848 	regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
849 	if (!regset)
850 		return -ENOMEM;
851 
852 	regset->regs = sec_dfx_regs;
853 	regset->nregs = ARRAY_SIZE(sec_dfx_regs);
854 	regset->base = qm->io_base;
855 	regset->dev = dev;
856 
857 	if (qm->pdev->device == PCI_DEVICE_ID_HUAWEI_SEC_PF)
858 		debugfs_create_file("regs", 0444, tmp_d, regset, &sec_regs_fops);
859 	if (qm->fun_type == QM_HW_PF && sec_regs)
860 		debugfs_create_file("diff_regs", 0444, tmp_d,
861 				      qm, &sec_diff_regs_fops);
862 
863 	for (i = 0; i < ARRAY_SIZE(sec_dfx_labels); i++) {
864 		atomic64_t *data = (atomic64_t *)((uintptr_t)dfx +
865 					sec_dfx_labels[i].offset);
866 		debugfs_create_file(sec_dfx_labels[i].name, 0644,
867 				   tmp_d, data, &sec_atomic64_ops);
868 	}
869 
870 	return 0;
871 }
872 
sec_debug_init(struct hisi_qm * qm)873 static int sec_debug_init(struct hisi_qm *qm)
874 {
875 	struct sec_dev *sec = container_of(qm, struct sec_dev, qm);
876 	int i;
877 
878 	if (qm->pdev->device == PCI_DEVICE_ID_HUAWEI_SEC_PF) {
879 		for (i = SEC_CLEAR_ENABLE; i < SEC_DEBUG_FILE_NUM; i++) {
880 			spin_lock_init(&sec->debug.files[i].lock);
881 			sec->debug.files[i].index = i;
882 			sec->debug.files[i].qm = qm;
883 
884 			debugfs_create_file(sec_dbg_file_name[i], 0600,
885 						  qm->debug.debug_root,
886 						  sec->debug.files + i,
887 						  &sec_dbg_fops);
888 		}
889 	}
890 
891 	return sec_core_debug_init(qm);
892 }
893 
sec_debugfs_init(struct hisi_qm * qm)894 static int sec_debugfs_init(struct hisi_qm *qm)
895 {
896 	struct device *dev = &qm->pdev->dev;
897 	int ret;
898 
899 	qm->debug.debug_root = debugfs_create_dir(dev_name(dev),
900 						  sec_debugfs_root);
901 	qm->debug.sqe_mask_offset = SEC_SQE_MASK_OFFSET;
902 	qm->debug.sqe_mask_len = SEC_SQE_MASK_LEN;
903 
904 	ret = hisi_qm_regs_debugfs_init(qm, sec_diff_regs, ARRAY_SIZE(sec_diff_regs));
905 	if (ret) {
906 		dev_warn(dev, "Failed to init SEC diff regs!\n");
907 		goto debugfs_remove;
908 	}
909 
910 	hisi_qm_debug_init(qm);
911 
912 	ret = sec_debug_init(qm);
913 	if (ret)
914 		goto failed_to_create;
915 
916 	return 0;
917 
918 failed_to_create:
919 	hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(sec_diff_regs));
920 debugfs_remove:
921 	debugfs_remove_recursive(sec_debugfs_root);
922 	return ret;
923 }
924 
sec_debugfs_exit(struct hisi_qm * qm)925 static void sec_debugfs_exit(struct hisi_qm *qm)
926 {
927 	hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(sec_diff_regs));
928 
929 	debugfs_remove_recursive(qm->debug.debug_root);
930 }
931 
sec_show_last_regs_init(struct hisi_qm * qm)932 static int sec_show_last_regs_init(struct hisi_qm *qm)
933 {
934 	struct qm_debug *debug = &qm->debug;
935 	int i;
936 
937 	debug->last_words = kcalloc(ARRAY_SIZE(sec_dfx_regs),
938 					sizeof(unsigned int), GFP_KERNEL);
939 	if (!debug->last_words)
940 		return -ENOMEM;
941 
942 	for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++)
943 		debug->last_words[i] = readl_relaxed(qm->io_base +
944 							sec_dfx_regs[i].offset);
945 
946 	return 0;
947 }
948 
sec_show_last_regs_uninit(struct hisi_qm * qm)949 static void sec_show_last_regs_uninit(struct hisi_qm *qm)
950 {
951 	struct qm_debug *debug = &qm->debug;
952 
953 	if (qm->fun_type == QM_HW_VF || !debug->last_words)
954 		return;
955 
956 	kfree(debug->last_words);
957 	debug->last_words = NULL;
958 }
959 
sec_show_last_dfx_regs(struct hisi_qm * qm)960 static void sec_show_last_dfx_regs(struct hisi_qm *qm)
961 {
962 	struct qm_debug *debug = &qm->debug;
963 	struct pci_dev *pdev = qm->pdev;
964 	u32 val;
965 	int i;
966 
967 	if (qm->fun_type == QM_HW_VF || !debug->last_words)
968 		return;
969 
970 	/* dumps last word of the debugging registers during controller reset */
971 	for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++) {
972 		val = readl_relaxed(qm->io_base + sec_dfx_regs[i].offset);
973 		if (val != debug->last_words[i])
974 			pci_info(pdev, "%s \t= 0x%08x => 0x%08x\n",
975 				sec_dfx_regs[i].name, debug->last_words[i], val);
976 	}
977 }
978 
sec_log_hw_error(struct hisi_qm * qm,u32 err_sts)979 static void sec_log_hw_error(struct hisi_qm *qm, u32 err_sts)
980 {
981 	const struct sec_hw_error *errs = sec_hw_errors;
982 	struct device *dev = &qm->pdev->dev;
983 	u32 err_val;
984 
985 	while (errs->msg) {
986 		if (errs->int_msk & err_sts) {
987 			dev_err(dev, "%s [error status=0x%x] found\n",
988 					errs->msg, errs->int_msk);
989 
990 			if (SEC_CORE_INT_STATUS_M_ECC & errs->int_msk) {
991 				err_val = readl(qm->io_base +
992 						SEC_CORE_SRAM_ECC_ERR_INFO);
993 				dev_err(dev, "multi ecc sram num=0x%x\n",
994 						((err_val) >> SEC_ECC_NUM) &
995 						SEC_ECC_MASH);
996 			}
997 		}
998 		errs++;
999 	}
1000 }
1001 
sec_get_hw_err_status(struct hisi_qm * qm)1002 static u32 sec_get_hw_err_status(struct hisi_qm *qm)
1003 {
1004 	return readl(qm->io_base + SEC_CORE_INT_STATUS);
1005 }
1006 
sec_clear_hw_err_status(struct hisi_qm * qm,u32 err_sts)1007 static void sec_clear_hw_err_status(struct hisi_qm *qm, u32 err_sts)
1008 {
1009 	u32 nfe;
1010 
1011 	writel(err_sts, qm->io_base + SEC_CORE_INT_SOURCE);
1012 	nfe = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_NFE_MASK_CAP, qm->cap_ver);
1013 	writel(nfe, qm->io_base + SEC_RAS_NFE_REG);
1014 }
1015 
sec_open_axi_master_ooo(struct hisi_qm * qm)1016 static void sec_open_axi_master_ooo(struct hisi_qm *qm)
1017 {
1018 	u32 val;
1019 
1020 	val = readl(qm->io_base + SEC_CONTROL_REG);
1021 	writel(val & SEC_AXI_SHUTDOWN_DISABLE, qm->io_base + SEC_CONTROL_REG);
1022 	writel(val | SEC_AXI_SHUTDOWN_ENABLE, qm->io_base + SEC_CONTROL_REG);
1023 }
1024 
sec_err_info_init(struct hisi_qm * qm)1025 static void sec_err_info_init(struct hisi_qm *qm)
1026 {
1027 	struct hisi_qm_err_info *err_info = &qm->err_info;
1028 
1029 	err_info->fe = SEC_RAS_FE_ENB_MSK;
1030 	err_info->ce = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_QM_CE_MASK_CAP, qm->cap_ver);
1031 	err_info->nfe = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_QM_NFE_MASK_CAP, qm->cap_ver);
1032 	err_info->ecc_2bits_mask = SEC_CORE_INT_STATUS_M_ECC;
1033 	err_info->qm_shutdown_mask = hisi_qm_get_hw_info(qm, sec_basic_info,
1034 				     SEC_QM_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver);
1035 	err_info->dev_shutdown_mask = hisi_qm_get_hw_info(qm, sec_basic_info,
1036 			SEC_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver);
1037 	err_info->qm_reset_mask = hisi_qm_get_hw_info(qm, sec_basic_info,
1038 			SEC_QM_RESET_MASK_CAP, qm->cap_ver);
1039 	err_info->dev_reset_mask = hisi_qm_get_hw_info(qm, sec_basic_info,
1040 			SEC_RESET_MASK_CAP, qm->cap_ver);
1041 	err_info->msi_wr_port = BIT(0);
1042 	err_info->acpi_rst = "SRST";
1043 }
1044 
1045 static const struct hisi_qm_err_ini sec_err_ini = {
1046 	.hw_init		= sec_set_user_domain_and_cache,
1047 	.hw_err_enable		= sec_hw_error_enable,
1048 	.hw_err_disable		= sec_hw_error_disable,
1049 	.get_dev_hw_err_status	= sec_get_hw_err_status,
1050 	.clear_dev_hw_err_status = sec_clear_hw_err_status,
1051 	.log_dev_hw_err		= sec_log_hw_error,
1052 	.open_axi_master_ooo	= sec_open_axi_master_ooo,
1053 	.open_sva_prefetch	= sec_open_sva_prefetch,
1054 	.close_sva_prefetch	= sec_close_sva_prefetch,
1055 	.show_last_dfx_regs	= sec_show_last_dfx_regs,
1056 	.err_info_init		= sec_err_info_init,
1057 };
1058 
sec_pf_probe_init(struct sec_dev * sec)1059 static int sec_pf_probe_init(struct sec_dev *sec)
1060 {
1061 	struct hisi_qm *qm = &sec->qm;
1062 	int ret;
1063 
1064 	qm->err_ini = &sec_err_ini;
1065 	qm->err_ini->err_info_init(qm);
1066 
1067 	ret = sec_set_user_domain_and_cache(qm);
1068 	if (ret)
1069 		return ret;
1070 
1071 	sec_open_sva_prefetch(qm);
1072 	hisi_qm_dev_err_init(qm);
1073 	sec_debug_regs_clear(qm);
1074 	ret = sec_show_last_regs_init(qm);
1075 	if (ret)
1076 		pci_err(qm->pdev, "Failed to init last word regs!\n");
1077 
1078 	return ret;
1079 }
1080 
sec_pre_store_cap_reg(struct hisi_qm * qm)1081 static int sec_pre_store_cap_reg(struct hisi_qm *qm)
1082 {
1083 	struct hisi_qm_cap_record *sec_cap;
1084 	struct pci_dev *pdev = qm->pdev;
1085 	size_t i, size;
1086 
1087 	size = ARRAY_SIZE(sec_pre_store_caps);
1088 	sec_cap = devm_kzalloc(&pdev->dev, sizeof(*sec_cap) * size, GFP_KERNEL);
1089 	if (!sec_cap)
1090 		return -ENOMEM;
1091 
1092 	for (i = 0; i < size; i++) {
1093 		sec_cap[i].type = sec_pre_store_caps[i];
1094 		sec_cap[i].cap_val = hisi_qm_get_hw_info(qm, sec_basic_info,
1095 				     sec_pre_store_caps[i], qm->cap_ver);
1096 	}
1097 
1098 	qm->cap_tables.dev_cap_table = sec_cap;
1099 
1100 	return 0;
1101 }
1102 
sec_qm_init(struct hisi_qm * qm,struct pci_dev * pdev)1103 static int sec_qm_init(struct hisi_qm *qm, struct pci_dev *pdev)
1104 {
1105 	u64 alg_msk;
1106 	int ret;
1107 
1108 	qm->pdev = pdev;
1109 	qm->ver = pdev->revision;
1110 	qm->mode = uacce_mode;
1111 	qm->sqe_size = SEC_SQE_SIZE;
1112 	qm->dev_name = sec_name;
1113 
1114 	qm->fun_type = (pdev->device == PCI_DEVICE_ID_HUAWEI_SEC_PF) ?
1115 			QM_HW_PF : QM_HW_VF;
1116 	if (qm->fun_type == QM_HW_PF) {
1117 		qm->qp_base = SEC_PF_DEF_Q_BASE;
1118 		qm->qp_num = pf_q_num;
1119 		qm->debug.curr_qm_qp_num = pf_q_num;
1120 		qm->qm_list = &sec_devices;
1121 		if (pf_q_num_flag)
1122 			set_bit(QM_MODULE_PARAM, &qm->misc_ctl);
1123 	} else if (qm->fun_type == QM_HW_VF && qm->ver == QM_HW_V1) {
1124 		/*
1125 		 * have no way to get qm configure in VM in v1 hardware,
1126 		 * so currently force PF to uses SEC_PF_DEF_Q_NUM, and force
1127 		 * to trigger only one VF in v1 hardware.
1128 		 * v2 hardware has no such problem.
1129 		 */
1130 		qm->qp_base = SEC_PF_DEF_Q_NUM;
1131 		qm->qp_num = SEC_QUEUE_NUM_V1 - SEC_PF_DEF_Q_NUM;
1132 	}
1133 
1134 	ret = hisi_qm_init(qm);
1135 	if (ret) {
1136 		pci_err(qm->pdev, "Failed to init sec qm configures!\n");
1137 		return ret;
1138 	}
1139 
1140 	/* Fetch and save the value of capability registers */
1141 	ret = sec_pre_store_cap_reg(qm);
1142 	if (ret) {
1143 		pci_err(qm->pdev, "Failed to pre-store capability registers!\n");
1144 		hisi_qm_uninit(qm);
1145 		return ret;
1146 	}
1147 
1148 	alg_msk = sec_get_alg_bitmap(qm, SEC_DEV_ALG_BITMAP_HIGH_IDX, SEC_DEV_ALG_BITMAP_LOW_IDX);
1149 	ret = hisi_qm_set_algs(qm, alg_msk, sec_dev_algs, ARRAY_SIZE(sec_dev_algs));
1150 	if (ret) {
1151 		pci_err(qm->pdev, "Failed to set sec algs!\n");
1152 		hisi_qm_uninit(qm);
1153 	}
1154 
1155 	return ret;
1156 }
1157 
sec_qm_uninit(struct hisi_qm * qm)1158 static void sec_qm_uninit(struct hisi_qm *qm)
1159 {
1160 	hisi_qm_uninit(qm);
1161 }
1162 
sec_probe_init(struct sec_dev * sec)1163 static int sec_probe_init(struct sec_dev *sec)
1164 {
1165 	u32 type_rate = SEC_SHAPER_TYPE_RATE;
1166 	struct hisi_qm *qm = &sec->qm;
1167 	int ret;
1168 
1169 	if (qm->fun_type == QM_HW_PF) {
1170 		ret = sec_pf_probe_init(sec);
1171 		if (ret)
1172 			return ret;
1173 		/* enable shaper type 0 */
1174 		if (qm->ver >= QM_HW_V3) {
1175 			type_rate |= QM_SHAPER_ENABLE;
1176 			qm->type_rate = type_rate;
1177 		}
1178 	}
1179 
1180 	return 0;
1181 }
1182 
sec_probe_uninit(struct hisi_qm * qm)1183 static void sec_probe_uninit(struct hisi_qm *qm)
1184 {
1185 	hisi_qm_dev_err_uninit(qm);
1186 }
1187 
sec_iommu_used_check(struct sec_dev * sec)1188 static void sec_iommu_used_check(struct sec_dev *sec)
1189 {
1190 	struct iommu_domain *domain;
1191 	struct device *dev = &sec->qm.pdev->dev;
1192 
1193 	domain = iommu_get_domain_for_dev(dev);
1194 
1195 	/* Check if iommu is used */
1196 	sec->iommu_used = false;
1197 	if (domain) {
1198 		if (domain->type & __IOMMU_DOMAIN_PAGING)
1199 			sec->iommu_used = true;
1200 		dev_info(dev, "SMMU Opened, the iommu type = %u\n",
1201 			domain->type);
1202 	}
1203 }
1204 
sec_probe(struct pci_dev * pdev,const struct pci_device_id * id)1205 static int sec_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1206 {
1207 	struct sec_dev *sec;
1208 	struct hisi_qm *qm;
1209 	int ret;
1210 
1211 	sec = devm_kzalloc(&pdev->dev, sizeof(*sec), GFP_KERNEL);
1212 	if (!sec)
1213 		return -ENOMEM;
1214 
1215 	qm = &sec->qm;
1216 	ret = sec_qm_init(qm, pdev);
1217 	if (ret) {
1218 		pci_err(pdev, "Failed to init SEC QM (%d)!\n", ret);
1219 		return ret;
1220 	}
1221 
1222 	sec->ctx_q_num = ctx_q_num;
1223 	sec_iommu_used_check(sec);
1224 
1225 	ret = sec_probe_init(sec);
1226 	if (ret) {
1227 		pci_err(pdev, "Failed to probe!\n");
1228 		goto err_qm_uninit;
1229 	}
1230 
1231 	ret = hisi_qm_start(qm);
1232 	if (ret) {
1233 		pci_err(pdev, "Failed to start sec qm!\n");
1234 		goto err_probe_uninit;
1235 	}
1236 
1237 	ret = sec_debugfs_init(qm);
1238 	if (ret)
1239 		pci_warn(pdev, "Failed to init debugfs!\n");
1240 
1241 	if (qm->qp_num >= ctx_q_num) {
1242 		ret = hisi_qm_alg_register(qm, &sec_devices);
1243 		if (ret < 0) {
1244 			pr_err("Failed to register driver to crypto.\n");
1245 			goto err_qm_stop;
1246 		}
1247 	} else {
1248 		pci_warn(qm->pdev,
1249 			"Failed to use kernel mode, qp not enough!\n");
1250 	}
1251 
1252 	if (qm->uacce) {
1253 		ret = uacce_register(qm->uacce);
1254 		if (ret) {
1255 			pci_err(pdev, "failed to register uacce (%d)!\n", ret);
1256 			goto err_alg_unregister;
1257 		}
1258 	}
1259 
1260 	if (qm->fun_type == QM_HW_PF && vfs_num) {
1261 		ret = hisi_qm_sriov_enable(pdev, vfs_num);
1262 		if (ret < 0)
1263 			goto err_alg_unregister;
1264 	}
1265 
1266 	hisi_qm_pm_init(qm);
1267 
1268 	return 0;
1269 
1270 err_alg_unregister:
1271 	if (qm->qp_num >= ctx_q_num)
1272 		hisi_qm_alg_unregister(qm, &sec_devices);
1273 err_qm_stop:
1274 	sec_debugfs_exit(qm);
1275 	hisi_qm_stop(qm, QM_NORMAL);
1276 err_probe_uninit:
1277 	sec_show_last_regs_uninit(qm);
1278 	sec_probe_uninit(qm);
1279 err_qm_uninit:
1280 	sec_qm_uninit(qm);
1281 	return ret;
1282 }
1283 
sec_remove(struct pci_dev * pdev)1284 static void sec_remove(struct pci_dev *pdev)
1285 {
1286 	struct hisi_qm *qm = pci_get_drvdata(pdev);
1287 
1288 	hisi_qm_pm_uninit(qm);
1289 	hisi_qm_wait_task_finish(qm, &sec_devices);
1290 	if (qm->qp_num >= ctx_q_num)
1291 		hisi_qm_alg_unregister(qm, &sec_devices);
1292 
1293 	if (qm->fun_type == QM_HW_PF && qm->vfs_num)
1294 		hisi_qm_sriov_disable(pdev, true);
1295 
1296 	sec_debugfs_exit(qm);
1297 
1298 	(void)hisi_qm_stop(qm, QM_NORMAL);
1299 
1300 	if (qm->fun_type == QM_HW_PF)
1301 		sec_debug_regs_clear(qm);
1302 	sec_show_last_regs_uninit(qm);
1303 
1304 	sec_probe_uninit(qm);
1305 
1306 	sec_qm_uninit(qm);
1307 }
1308 
1309 static const struct dev_pm_ops sec_pm_ops = {
1310 	SET_RUNTIME_PM_OPS(hisi_qm_suspend, hisi_qm_resume, NULL)
1311 };
1312 
1313 static const struct pci_error_handlers sec_err_handler = {
1314 	.error_detected = hisi_qm_dev_err_detected,
1315 	.slot_reset	= hisi_qm_dev_slot_reset,
1316 	.reset_prepare	= hisi_qm_reset_prepare,
1317 	.reset_done	= hisi_qm_reset_done,
1318 };
1319 
1320 static struct pci_driver sec_pci_driver = {
1321 	.name = "hisi_sec2",
1322 	.id_table = sec_dev_ids,
1323 	.probe = sec_probe,
1324 	.remove = sec_remove,
1325 	.err_handler = &sec_err_handler,
1326 	.sriov_configure = hisi_qm_sriov_configure,
1327 	.shutdown = hisi_qm_dev_shutdown,
1328 	.driver.pm = &sec_pm_ops,
1329 };
1330 
hisi_sec_get_pf_driver(void)1331 struct pci_driver *hisi_sec_get_pf_driver(void)
1332 {
1333 	return &sec_pci_driver;
1334 }
1335 EXPORT_SYMBOL_GPL(hisi_sec_get_pf_driver);
1336 
sec_register_debugfs(void)1337 static void sec_register_debugfs(void)
1338 {
1339 	if (!debugfs_initialized())
1340 		return;
1341 
1342 	sec_debugfs_root = debugfs_create_dir("hisi_sec2", NULL);
1343 }
1344 
sec_unregister_debugfs(void)1345 static void sec_unregister_debugfs(void)
1346 {
1347 	debugfs_remove_recursive(sec_debugfs_root);
1348 }
1349 
sec_init(void)1350 static int __init sec_init(void)
1351 {
1352 	int ret;
1353 
1354 	hisi_qm_init_list(&sec_devices);
1355 	sec_register_debugfs();
1356 
1357 	ret = pci_register_driver(&sec_pci_driver);
1358 	if (ret < 0) {
1359 		sec_unregister_debugfs();
1360 		pr_err("Failed to register pci driver.\n");
1361 		return ret;
1362 	}
1363 
1364 	return 0;
1365 }
1366 
sec_exit(void)1367 static void __exit sec_exit(void)
1368 {
1369 	pci_unregister_driver(&sec_pci_driver);
1370 	sec_unregister_debugfs();
1371 }
1372 
1373 module_init(sec_init);
1374 module_exit(sec_exit);
1375 
1376 MODULE_LICENSE("GPL v2");
1377 MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com>");
1378 MODULE_AUTHOR("Longfang Liu <liulongfang@huawei.com>");
1379 MODULE_AUTHOR("Kai Ye <yekai13@huawei.com>");
1380 MODULE_AUTHOR("Wei Zhang <zhangwei375@huawei.com>");
1381 MODULE_DESCRIPTION("Driver for HiSilicon SEC accelerator");
1382