1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (C) 2017 Marvell
   4 *
   5 * Antoine Tenart <antoine.tenart@free-electrons.com>
   6 */
   7
   8#include <linux/clk.h>
   9#include <linux/device.h>
  10#include <linux/dma-mapping.h>
  11#include <linux/dmapool.h>
  12#include <linux/firmware.h>
  13#include <linux/interrupt.h>
  14#include <linux/module.h>
  15#include <linux/of_platform.h>
  16#include <linux/of_irq.h>
  17#include <linux/pci.h>
  18#include <linux/platform_device.h>
  19#include <linux/workqueue.h>
  20
  21#include <crypto/internal/aead.h>
  22#include <crypto/internal/hash.h>
  23#include <crypto/internal/skcipher.h>
  24
  25#include "safexcel.h"
  26
  27static u32 max_rings = EIP197_MAX_RINGS;
  28module_param(max_rings, uint, 0644);
  29MODULE_PARM_DESC(max_rings, "Maximum number of rings to use.");
  30
  31static void eip197_trc_cache_setupvirt(struct safexcel_crypto_priv *priv)
  32{
  33	int i;
  34
  35	/*
  36	 * Map all interfaces/rings to register index 0
  37	 * so they can share contexts. Without this, the EIP197 will
  38	 * assume each interface/ring to be in its own memory domain
  39	 * i.e. have its own subset of UNIQUE memory addresses.
  40	 * Which would cause records with the SAME memory address to
  41	 * use DIFFERENT cache buffers, causing both poor cache utilization
  42	 * AND serious coherence/invalidation issues.
  43	 */
  44	for (i = 0; i < 4; i++)
  45		writel(0, priv->base + EIP197_FLUE_IFC_LUT(i));
  46
  47	/*
  48	 * Initialize other virtualization regs for cache
  49	 * These may not be in their reset state ...
  50	 */
  51	for (i = 0; i < priv->config.rings; i++) {
  52		writel(0, priv->base + EIP197_FLUE_CACHEBASE_LO(i));
  53		writel(0, priv->base + EIP197_FLUE_CACHEBASE_HI(i));
  54		writel(EIP197_FLUE_CONFIG_MAGIC,
  55		       priv->base + EIP197_FLUE_CONFIG(i));
  56	}
  57	writel(0, priv->base + EIP197_FLUE_OFFSETS);
  58	writel(0, priv->base + EIP197_FLUE_ARC4_OFFSET);
  59}
  60
  61static void eip197_trc_cache_banksel(struct safexcel_crypto_priv *priv,
  62				     u32 addrmid, int *actbank)
  63{
  64	u32 val;
  65	int curbank;
  66
  67	curbank = addrmid >> 16;
  68	if (curbank != *actbank) {
  69		val = readl(priv->base + EIP197_CS_RAM_CTRL);
  70		val = (val & ~EIP197_CS_BANKSEL_MASK) |
  71		      (curbank << EIP197_CS_BANKSEL_OFS);
  72		writel(val, priv->base + EIP197_CS_RAM_CTRL);
  73		*actbank = curbank;
  74	}
  75}
  76
  77static u32 eip197_trc_cache_probe(struct safexcel_crypto_priv *priv,
  78				  int maxbanks, u32 probemask, u32 stride)
  79{
  80	u32 val, addrhi, addrlo, addrmid, addralias, delta, marker;
  81	int actbank;
  82
  83	/*
  84	 * And probe the actual size of the physically attached cache data RAM
  85	 * Using a binary subdivision algorithm downto 32 byte cache lines.
  86	 */
  87	addrhi = 1 << (16 + maxbanks);
  88	addrlo = 0;
  89	actbank = min(maxbanks - 1, 0);
  90	while ((addrhi - addrlo) > stride) {
  91		/* write marker to lowest address in top half */
  92		addrmid = (addrhi + addrlo) >> 1;
  93		marker = (addrmid ^ 0xabadbabe) & probemask; /* Unique */
  94		eip197_trc_cache_banksel(priv, addrmid, &actbank);
  95		writel(marker,
  96			priv->base + EIP197_CLASSIFICATION_RAMS +
  97			(addrmid & 0xffff));
  98
  99		/* write invalid markers to possible aliases */
 100		delta = 1 << __fls(addrmid);
 101		while (delta >= stride) {
 102			addralias = addrmid - delta;
 103			eip197_trc_cache_banksel(priv, addralias, &actbank);
 104			writel(~marker,
 105			       priv->base + EIP197_CLASSIFICATION_RAMS +
 106			       (addralias & 0xffff));
 107			delta >>= 1;
 108		}
 109
 110		/* read back marker from top half */
 111		eip197_trc_cache_banksel(priv, addrmid, &actbank);
 112		val = readl(priv->base + EIP197_CLASSIFICATION_RAMS +
 113			    (addrmid & 0xffff));
 114
 115		if ((val & probemask) == marker)
 116			/* read back correct, continue with top half */
 117			addrlo = addrmid;
 118		else
 119			/* not read back correct, continue with bottom half */
 120			addrhi = addrmid;
 121	}
 122	return addrhi;
 123}
 124
 125static void eip197_trc_cache_clear(struct safexcel_crypto_priv *priv,
 126				   int cs_rc_max, int cs_ht_wc)
 127{
 128	int i;
 129	u32 htable_offset, val, offset;
 130
 131	/* Clear all records in administration RAM */
 132	for (i = 0; i < cs_rc_max; i++) {
 133		offset = EIP197_CLASSIFICATION_RAMS + i * EIP197_CS_RC_SIZE;
 134
 135		writel(EIP197_CS_RC_NEXT(EIP197_RC_NULL) |
 136		       EIP197_CS_RC_PREV(EIP197_RC_NULL),
 137		       priv->base + offset);
 138
 139		val = EIP197_CS_RC_NEXT(i + 1) | EIP197_CS_RC_PREV(i - 1);
 140		if (i == 0)
 141			val |= EIP197_CS_RC_PREV(EIP197_RC_NULL);
 142		else if (i == cs_rc_max - 1)
 143			val |= EIP197_CS_RC_NEXT(EIP197_RC_NULL);
 144		writel(val, priv->base + offset + 4);
 145		/* must also initialize the address key due to ECC! */
 146		writel(0, priv->base + offset + 8);
 147		writel(0, priv->base + offset + 12);
 148	}
 149
 150	/* Clear the hash table entries */
 151	htable_offset = cs_rc_max * EIP197_CS_RC_SIZE;
 152	for (i = 0; i < cs_ht_wc; i++)
 153		writel(GENMASK(29, 0),
 154		       priv->base + EIP197_CLASSIFICATION_RAMS +
 155		       htable_offset + i * sizeof(u32));
 156}
 157
 158static int eip197_trc_cache_init(struct safexcel_crypto_priv *priv)
 159{
 160	u32 val, dsize, asize;
 161	int cs_rc_max, cs_ht_wc, cs_trc_rec_wc, cs_trc_lg_rec_wc;
 162	int cs_rc_abs_max, cs_ht_sz;
 163	int maxbanks;
 164
 165	/* Setup (dummy) virtualization for cache */
 166	eip197_trc_cache_setupvirt(priv);
 167
 168	/*
 169	 * Enable the record cache memory access and
 170	 * probe the bank select width
 171	 */
 172	val = readl(priv->base + EIP197_CS_RAM_CTRL);
 173	val &= ~EIP197_TRC_ENABLE_MASK;
 174	val |= EIP197_TRC_ENABLE_0 | EIP197_CS_BANKSEL_MASK;
 175	writel(val, priv->base + EIP197_CS_RAM_CTRL);
 176	val = readl(priv->base + EIP197_CS_RAM_CTRL);
 177	maxbanks = ((val&EIP197_CS_BANKSEL_MASK)>>EIP197_CS_BANKSEL_OFS) + 1;
 178
 179	/* Clear all ECC errors */
 180	writel(0, priv->base + EIP197_TRC_ECCCTRL);
 181
 182	/*
 183	 * Make sure the cache memory is accessible by taking record cache into
 184	 * reset. Need data memory access here, not admin access.
 185	 */
 186	val = readl(priv->base + EIP197_TRC_PARAMS);
 187	val |= EIP197_TRC_PARAMS_SW_RESET | EIP197_TRC_PARAMS_DATA_ACCESS;
 188	writel(val, priv->base + EIP197_TRC_PARAMS);
 189
 190	/* Probed data RAM size in bytes */
 191	dsize = eip197_trc_cache_probe(priv, maxbanks, 0xffffffff, 32);
 192
 193	/*
 194	 * Now probe the administration RAM size pretty much the same way
 195	 * Except that only the lower 30 bits are writable and we don't need
 196	 * bank selects
 197	 */
 198	val = readl(priv->base + EIP197_TRC_PARAMS);
 199	/* admin access now */
 200	val &= ~(EIP197_TRC_PARAMS_DATA_ACCESS | EIP197_CS_BANKSEL_MASK);
 201	writel(val, priv->base + EIP197_TRC_PARAMS);
 202
 203	/* Probed admin RAM size in admin words */
 204	asize = eip197_trc_cache_probe(priv, 0, 0x3fffffff, 16) >> 4;
 205
 206	/* Clear any ECC errors detected while probing! */
 207	writel(0, priv->base + EIP197_TRC_ECCCTRL);
 208
 209	/* Sanity check probing results */
 210	if (dsize < EIP197_MIN_DSIZE || asize < EIP197_MIN_ASIZE) {
 211		dev_err(priv->dev, "Record cache probing failed (%d,%d).",
 212			dsize, asize);
 213		return -ENODEV;
 214	}
 215
 216	/*
 217	 * Determine optimal configuration from RAM sizes
 218	 * Note that we assume that the physical RAM configuration is sane
 219	 * Therefore, we don't do any parameter error checking here ...
 220	 */
 221
 222	/* For now, just use a single record format covering everything */
 223	cs_trc_rec_wc = EIP197_CS_TRC_REC_WC;
 224	cs_trc_lg_rec_wc = EIP197_CS_TRC_REC_WC;
 225
 226	/*
 227	 * Step #1: How many records will physically fit?
 228	 * Hard upper limit is 1023!
 229	 */
 230	cs_rc_abs_max = min_t(uint, ((dsize >> 2) / cs_trc_lg_rec_wc), 1023);
 231	/* Step #2: Need at least 2 words in the admin RAM per record */
 232	cs_rc_max = min_t(uint, cs_rc_abs_max, (asize >> 1));
 233	/* Step #3: Determine log2 of hash table size */
 234	cs_ht_sz = __fls(asize - cs_rc_max) - 2;
 235	/* Step #4: determine current size of hash table in dwords */
 236	cs_ht_wc = 16 << cs_ht_sz; /* dwords, not admin words */
 237	/* Step #5: add back excess words and see if we can fit more records */
 238	cs_rc_max = min_t(uint, cs_rc_abs_max, asize - (cs_ht_wc >> 2));
 239
 240	/* Clear the cache RAMs */
 241	eip197_trc_cache_clear(priv, cs_rc_max, cs_ht_wc);
 242
 243	/* Disable the record cache memory access */
 244	val = readl(priv->base + EIP197_CS_RAM_CTRL);
 245	val &= ~EIP197_TRC_ENABLE_MASK;
 246	writel(val, priv->base + EIP197_CS_RAM_CTRL);
 247
 248	/* Write head and tail pointers of the record free chain */
 249	val = EIP197_TRC_FREECHAIN_HEAD_PTR(0) |
 250	      EIP197_TRC_FREECHAIN_TAIL_PTR(cs_rc_max - 1);
 251	writel(val, priv->base + EIP197_TRC_FREECHAIN);
 252
 253	/* Configure the record cache #1 */
 254	val = EIP197_TRC_PARAMS2_RC_SZ_SMALL(cs_trc_rec_wc) |
 255	      EIP197_TRC_PARAMS2_HTABLE_PTR(cs_rc_max);
 256	writel(val, priv->base + EIP197_TRC_PARAMS2);
 257
 258	/* Configure the record cache #2 */
 259	val = EIP197_TRC_PARAMS_RC_SZ_LARGE(cs_trc_lg_rec_wc) |
 260	      EIP197_TRC_PARAMS_BLK_TIMER_SPEED(1) |
 261	      EIP197_TRC_PARAMS_HTABLE_SZ(cs_ht_sz);
 262	writel(val, priv->base + EIP197_TRC_PARAMS);
 263
 264	dev_info(priv->dev, "TRC init: %dd,%da (%dr,%dh)\n",
 265		 dsize, asize, cs_rc_max, cs_ht_wc + cs_ht_wc);
 266	return 0;
 267}
 268
 269static void eip197_init_firmware(struct safexcel_crypto_priv *priv)
 270{
 271	int pe, i;
 272	u32 val;
 273
 274	for (pe = 0; pe < priv->config.pes; pe++) {
 275		/* Configure the token FIFO's */
 276		writel(3, EIP197_PE(priv) + EIP197_PE_ICE_PUTF_CTRL(pe));
 277		writel(0, EIP197_PE(priv) + EIP197_PE_ICE_PPTF_CTRL(pe));
 278
 279		/* Clear the ICE scratchpad memory */
 280		val = readl(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL(pe));
 281		val |= EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_TIMER |
 282		       EIP197_PE_ICE_SCRATCH_CTRL_TIMER_EN |
 283		       EIP197_PE_ICE_SCRATCH_CTRL_SCRATCH_ACCESS |
 284		       EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_ACCESS;
 285		writel(val, EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL(pe));
 286
 287		/* clear the scratchpad RAM using 32 bit writes only */
 288		for (i = 0; i < EIP197_NUM_OF_SCRATCH_BLOCKS; i++)
 289			writel(0, EIP197_PE(priv) +
 290				  EIP197_PE_ICE_SCRATCH_RAM(pe) + (i << 2));
 291
 292		/* Reset the IFPP engine to make its program mem accessible */
 293		writel(EIP197_PE_ICE_x_CTRL_SW_RESET |
 294		       EIP197_PE_ICE_x_CTRL_CLR_ECC_CORR |
 295		       EIP197_PE_ICE_x_CTRL_CLR_ECC_NON_CORR,
 296		       EIP197_PE(priv) + EIP197_PE_ICE_FPP_CTRL(pe));
 297
 298		/* Reset the IPUE engine to make its program mem accessible */
 299		writel(EIP197_PE_ICE_x_CTRL_SW_RESET |
 300		       EIP197_PE_ICE_x_CTRL_CLR_ECC_CORR |
 301		       EIP197_PE_ICE_x_CTRL_CLR_ECC_NON_CORR,
 302		       EIP197_PE(priv) + EIP197_PE_ICE_PUE_CTRL(pe));
 303
 304		/* Enable access to all IFPP program memories */
 305		writel(EIP197_PE_ICE_RAM_CTRL_FPP_PROG_EN,
 306		       EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL(pe));
 307
 308		/* bypass the OCE, if present */
 309		if (priv->flags & EIP197_OCE)
 310			writel(EIP197_DEBUG_OCE_BYPASS, EIP197_PE(priv) +
 311							EIP197_PE_DEBUG(pe));
 312	}
 313
 314}
 315
 316static int eip197_write_firmware(struct safexcel_crypto_priv *priv,
 317				  const struct firmware *fw)
 318{
 319	u32 val;
 320	int i;
 321
 322	/* Write the firmware */
 323	for (i = 0; i < fw->size / sizeof(u32); i++) {
 324		if (priv->data->fw_little_endian)
 325			val = le32_to_cpu(((const __le32 *)fw->data)[i]);
 326		else
 327			val = be32_to_cpu(((const __be32 *)fw->data)[i]);
 328
 329		writel(val,
 330		       priv->base + EIP197_CLASSIFICATION_RAMS +
 331		       i * sizeof(val));
 332	}
 333
 334	/* Exclude final 2 NOPs from size */
 335	return i - EIP197_FW_TERMINAL_NOPS;
 336}
 337
 338/*
 339 * If FW is actual production firmware, then poll for its initialization
 340 * to complete and check if it is good for the HW, otherwise just return OK.
 341 */
 342static bool poll_fw_ready(struct safexcel_crypto_priv *priv, int fpp)
 343{
 344	int pe, pollcnt;
 345	u32 base, pollofs;
 346
 347	if (fpp)
 348		pollofs  = EIP197_FW_FPP_READY;
 349	else
 350		pollofs  = EIP197_FW_PUE_READY;
 351
 352	for (pe = 0; pe < priv->config.pes; pe++) {
 353		base = EIP197_PE_ICE_SCRATCH_RAM(pe);
 354		pollcnt = EIP197_FW_START_POLLCNT;
 355		while (pollcnt &&
 356		       (readl_relaxed(EIP197_PE(priv) + base +
 357			      pollofs) != 1)) {
 358			pollcnt--;
 359		}
 360		if (!pollcnt) {
 361			dev_err(priv->dev, "FW(%d) for PE %d failed to start\n",
 362				fpp, pe);
 363			return false;
 364		}
 365	}
 366	return true;
 367}
 368
 369static bool eip197_start_firmware(struct safexcel_crypto_priv *priv,
 370				  int ipuesz, int ifppsz, int minifw)
 371{
 372	int pe;
 373	u32 val;
 374
 375	for (pe = 0; pe < priv->config.pes; pe++) {
 376		/* Disable access to all program memory */
 377		writel(0, EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL(pe));
 378
 379		/* Start IFPP microengines */
 380		if (minifw)
 381			val = 0;
 382		else
 383			val = EIP197_PE_ICE_UENG_START_OFFSET((ifppsz - 1) &
 384					EIP197_PE_ICE_UENG_INIT_ALIGN_MASK) |
 385				EIP197_PE_ICE_UENG_DEBUG_RESET;
 386		writel(val, EIP197_PE(priv) + EIP197_PE_ICE_FPP_CTRL(pe));
 387
 388		/* Start IPUE microengines */
 389		if (minifw)
 390			val = 0;
 391		else
 392			val = EIP197_PE_ICE_UENG_START_OFFSET((ipuesz - 1) &
 393					EIP197_PE_ICE_UENG_INIT_ALIGN_MASK) |
 394				EIP197_PE_ICE_UENG_DEBUG_RESET;
 395		writel(val, EIP197_PE(priv) + EIP197_PE_ICE_PUE_CTRL(pe));
 396	}
 397
 398	/* For miniFW startup, there is no initialization, so always succeed */
 399	if (minifw)
 400		return true;
 401
 402	/* Wait until all the firmwares have properly started up */
 403	if (!poll_fw_ready(priv, 1))
 404		return false;
 405	if (!poll_fw_ready(priv, 0))
 406		return false;
 407
 408	return true;
 409}
 410
 411static int eip197_load_firmwares(struct safexcel_crypto_priv *priv)
 412{
 413	const char *fw_name[] = {"ifpp.bin", "ipue.bin"};
 414	const struct firmware *fw[FW_NB];
 415	char fw_path[37], *dir = NULL;
 416	int i, j, ret = 0, pe;
 417	int ipuesz, ifppsz, minifw = 0;
 418
 419	if (priv->data->version == EIP197D_MRVL)
 420		dir = "eip197d";
 421	else if (priv->data->version == EIP197B_MRVL ||
 422		 priv->data->version == EIP197_DEVBRD)
 423		dir = "eip197b";
 424	else if (priv->data->version == EIP197C_MXL)
 425		dir = "eip197c";
 426	else
 427		return -ENODEV;
 428
 429retry_fw:
 430	for (i = 0; i < FW_NB; i++) {
 431		snprintf(fw_path, 37, "inside-secure/%s/%s", dir, fw_name[i]);
 432		ret = firmware_request_nowarn(&fw[i], fw_path, priv->dev);
 433		if (ret) {
 434			if (minifw || priv->data->version != EIP197B_MRVL)
 435				goto release_fw;
 436
 437			/* Fallback to the old firmware location for the
 438			 * EIP197b.
 439			 */
 440			ret = firmware_request_nowarn(&fw[i], fw_name[i],
 441						      priv->dev);
 442			if (ret)
 443				goto release_fw;
 444		}
 445	}
 446
 447	eip197_init_firmware(priv);
 448
 449	ifppsz = eip197_write_firmware(priv, fw[FW_IFPP]);
 450
 451	/* Enable access to IPUE program memories */
 452	for (pe = 0; pe < priv->config.pes; pe++)
 453		writel(EIP197_PE_ICE_RAM_CTRL_PUE_PROG_EN,
 454		       EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL(pe));
 455
 456	ipuesz = eip197_write_firmware(priv, fw[FW_IPUE]);
 457
 458	if (eip197_start_firmware(priv, ipuesz, ifppsz, minifw)) {
 459		dev_dbg(priv->dev, "Firmware loaded successfully\n");
 460		return 0;
 461	}
 462
 463	ret = -ENODEV;
 464
 465release_fw:
 466	for (j = 0; j < i; j++)
 467		release_firmware(fw[j]);
 468
 469	if (!minifw) {
 470		/* Retry with minifw path */
 471		dev_dbg(priv->dev, "Firmware set not (fully) present or init failed, falling back to BCLA mode\n");
 472		dir = "eip197_minifw";
 473		minifw = 1;
 474		goto retry_fw;
 475	}
 476
 477	dev_err(priv->dev, "Firmware load failed.\n");
 478
 479	return ret;
 480}
 481
 482static int safexcel_hw_setup_cdesc_rings(struct safexcel_crypto_priv *priv)
 483{
 484	u32 cd_size_rnd, val;
 485	int i, cd_fetch_cnt;
 486
 487	cd_size_rnd  = (priv->config.cd_size +
 488			(BIT(priv->hwconfig.hwdataw) - 1)) >>
 489		       priv->hwconfig.hwdataw;
 490	/* determine number of CD's we can fetch into the CD FIFO as 1 block */
 491	if (priv->flags & SAFEXCEL_HW_EIP197) {
 492		/* EIP197: try to fetch enough in 1 go to keep all pipes busy */
 493		cd_fetch_cnt = (1 << priv->hwconfig.hwcfsize) / cd_size_rnd;
 494		cd_fetch_cnt = min_t(uint, cd_fetch_cnt,
 495				     (priv->config.pes * EIP197_FETCH_DEPTH));
 496	} else {
 497		/* for the EIP97, just fetch all that fits minus 1 */
 498		cd_fetch_cnt = ((1 << priv->hwconfig.hwcfsize) /
 499				cd_size_rnd) - 1;
 500	}
 501	/*
 502	 * Since we're using command desc's way larger than formally specified,
 503	 * we need to check whether we can fit even 1 for low-end EIP196's!
 504	 */
 505	if (!cd_fetch_cnt) {
 506		dev_err(priv->dev, "Unable to fit even 1 command desc!\n");
 507		return -ENODEV;
 508	}
 509
 510	for (i = 0; i < priv->config.rings; i++) {
 511		/* ring base address */
 512		writel(lower_32_bits(priv->ring[i].cdr.base_dma),
 513		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_LO);
 514		writel(upper_32_bits(priv->ring[i].cdr.base_dma),
 515		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_HI);
 516
 517		writel(EIP197_xDR_DESC_MODE_64BIT | EIP197_CDR_DESC_MODE_ADCP |
 518		       (priv->config.cd_offset << 14) | priv->config.cd_size,
 519		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_DESC_SIZE);
 520		writel(((cd_fetch_cnt *
 521			 (cd_size_rnd << priv->hwconfig.hwdataw)) << 16) |
 522		       (cd_fetch_cnt * (priv->config.cd_offset / sizeof(u32))),
 523		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_CFG);
 524
 525		/* Configure DMA tx control */
 526		val = EIP197_HIA_xDR_CFG_WR_CACHE(WR_CACHE_3BITS);
 527		val |= EIP197_HIA_xDR_CFG_RD_CACHE(RD_CACHE_3BITS);
 528		writel(val, EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_DMA_CFG);
 529
 530		/* clear any pending interrupt */
 531		writel(GENMASK(5, 0),
 532		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_STAT);
 533	}
 534
 535	return 0;
 536}
 537
 538static int safexcel_hw_setup_rdesc_rings(struct safexcel_crypto_priv *priv)
 539{
 540	u32 rd_size_rnd, val;
 541	int i, rd_fetch_cnt;
 542
 543	/* determine number of RD's we can fetch into the FIFO as one block */
 544	rd_size_rnd = (EIP197_RD64_FETCH_SIZE +
 545		       (BIT(priv->hwconfig.hwdataw) - 1)) >>
 546		      priv->hwconfig.hwdataw;
 547	if (priv->flags & SAFEXCEL_HW_EIP197) {
 548		/* EIP197: try to fetch enough in 1 go to keep all pipes busy */
 549		rd_fetch_cnt = (1 << priv->hwconfig.hwrfsize) / rd_size_rnd;
 550		rd_fetch_cnt = min_t(uint, rd_fetch_cnt,
 551				     (priv->config.pes * EIP197_FETCH_DEPTH));
 552	} else {
 553		/* for the EIP97, just fetch all that fits minus 1 */
 554		rd_fetch_cnt = ((1 << priv->hwconfig.hwrfsize) /
 555				rd_size_rnd) - 1;
 556	}
 557
 558	for (i = 0; i < priv->config.rings; i++) {
 559		/* ring base address */
 560		writel(lower_32_bits(priv->ring[i].rdr.base_dma),
 561		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_LO);
 562		writel(upper_32_bits(priv->ring[i].rdr.base_dma),
 563		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_HI);
 564
 565		writel(EIP197_xDR_DESC_MODE_64BIT | (priv->config.rd_offset << 14) |
 566		       priv->config.rd_size,
 567		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_DESC_SIZE);
 568
 569		writel(((rd_fetch_cnt *
 570			 (rd_size_rnd << priv->hwconfig.hwdataw)) << 16) |
 571		       (rd_fetch_cnt * (priv->config.rd_offset / sizeof(u32))),
 572		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_CFG);
 573
 574		/* Configure DMA tx control */
 575		val = EIP197_HIA_xDR_CFG_WR_CACHE(WR_CACHE_3BITS);
 576		val |= EIP197_HIA_xDR_CFG_RD_CACHE(RD_CACHE_3BITS);
 577		val |= EIP197_HIA_xDR_WR_RES_BUF | EIP197_HIA_xDR_WR_CTRL_BUF;
 578		writel(val,
 579		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_DMA_CFG);
 580
 581		/* clear any pending interrupt */
 582		writel(GENMASK(7, 0),
 583		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_STAT);
 584
 585		/* enable ring interrupt */
 586		val = readl(EIP197_HIA_AIC_R(priv) + EIP197_HIA_AIC_R_ENABLE_CTRL(i));
 587		val |= EIP197_RDR_IRQ(i);
 588		writel(val, EIP197_HIA_AIC_R(priv) + EIP197_HIA_AIC_R_ENABLE_CTRL(i));
 589	}
 590
 591	return 0;
 592}
 593
 594static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
 595{
 596	u32 val;
 597	int i, ret, pe, opbuflo, opbufhi;
 598
 599	dev_dbg(priv->dev, "HW init: using %d pipe(s) and %d ring(s)\n",
 600		priv->config.pes, priv->config.rings);
 601
 602	/*
 603	 * For EIP197's only set maximum number of TX commands to 2^5 = 32
 604	 * Skip for the EIP97 as it does not have this field.
 605	 */
 606	if (priv->flags & SAFEXCEL_HW_EIP197) {
 607		val = readl(EIP197_HIA_AIC(priv) + EIP197_HIA_MST_CTRL);
 608		val |= EIP197_MST_CTRL_TX_MAX_CMD(5);
 609		writel(val, EIP197_HIA_AIC(priv) + EIP197_HIA_MST_CTRL);
 610	}
 611
 612	/* Configure wr/rd cache values */
 613	writel(EIP197_MST_CTRL_RD_CACHE(RD_CACHE_4BITS) |
 614	       EIP197_MST_CTRL_WD_CACHE(WR_CACHE_4BITS),
 615	       EIP197_HIA_GEN_CFG(priv) + EIP197_MST_CTRL);
 616
 617	/* Interrupts reset */
 618
 619	/* Disable all global interrupts */
 620	writel(0, EIP197_HIA_AIC_G(priv) + EIP197_HIA_AIC_G_ENABLE_CTRL);
 621
 622	/* Clear any pending interrupt */
 623	writel(GENMASK(31, 0), EIP197_HIA_AIC_G(priv) + EIP197_HIA_AIC_G_ACK);
 624
 625	/* Processing Engine configuration */
 626	for (pe = 0; pe < priv->config.pes; pe++) {
 627		/* Data Fetch Engine configuration */
 628
 629		/* Reset all DFE threads */
 630		writel(EIP197_DxE_THR_CTRL_RESET_PE,
 631		       EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL(pe));
 632
 633		if (priv->flags & EIP197_PE_ARB)
 634			/* Reset HIA input interface arbiter (if present) */
 635			writel(EIP197_HIA_RA_PE_CTRL_RESET,
 636			       EIP197_HIA_AIC(priv) + EIP197_HIA_RA_PE_CTRL(pe));
 637
 638		/* DMA transfer size to use */
 639		val = EIP197_HIA_DFE_CFG_DIS_DEBUG;
 640		val |= EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(6) |
 641		       EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(9);
 642		val |= EIP197_HIA_DxE_CFG_MIN_CTRL_SIZE(6) |
 643		       EIP197_HIA_DxE_CFG_MAX_CTRL_SIZE(7);
 644		val |= EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(RD_CACHE_3BITS);
 645		val |= EIP197_HIA_DxE_CFG_CTRL_CACHE_CTRL(RD_CACHE_3BITS);
 646		writel(val, EIP197_HIA_DFE(priv) + EIP197_HIA_DFE_CFG(pe));
 647
 648		/* Leave the DFE threads reset state */
 649		writel(0, EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL(pe));
 650
 651		/* Configure the processing engine thresholds */
 652		writel(EIP197_PE_IN_xBUF_THRES_MIN(6) |
 653		       EIP197_PE_IN_xBUF_THRES_MAX(9),
 654		       EIP197_PE(priv) + EIP197_PE_IN_DBUF_THRES(pe));
 655		writel(EIP197_PE_IN_xBUF_THRES_MIN(6) |
 656		       EIP197_PE_IN_xBUF_THRES_MAX(7),
 657		       EIP197_PE(priv) + EIP197_PE_IN_TBUF_THRES(pe));
 658
 659		if (priv->flags & SAFEXCEL_HW_EIP197)
 660			/* enable HIA input interface arbiter and rings */
 661			writel(EIP197_HIA_RA_PE_CTRL_EN |
 662			       GENMASK(priv->config.rings - 1, 0),
 663			       EIP197_HIA_AIC(priv) + EIP197_HIA_RA_PE_CTRL(pe));
 664
 665		/* Data Store Engine configuration */
 666
 667		/* Reset all DSE threads */
 668		writel(EIP197_DxE_THR_CTRL_RESET_PE,
 669		       EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL(pe));
 670
 671		/* Wait for all DSE threads to complete */
 672		while ((readl(EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_STAT(pe)) &
 673			GENMASK(15, 12)) != GENMASK(15, 12))
 674			;
 675
 676		/* DMA transfer size to use */
 677		if (priv->hwconfig.hwnumpes > 4) {
 678			opbuflo = 9;
 679			opbufhi = 10;
 680		} else {
 681			opbuflo = 7;
 682			opbufhi = 8;
 683		}
 684		val = EIP197_HIA_DSE_CFG_DIS_DEBUG;
 685		val |= EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(opbuflo) |
 686		       EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(opbufhi);
 687		val |= EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(WR_CACHE_3BITS);
 688		val |= EIP197_HIA_DSE_CFG_ALWAYS_BUFFERABLE;
 689		/* FIXME: instability issues can occur for EIP97 but disabling
 690		 * it impacts performance.
 691		 */
 692		if (priv->flags & SAFEXCEL_HW_EIP197)
 693			val |= EIP197_HIA_DSE_CFG_EN_SINGLE_WR;
 694		writel(val, EIP197_HIA_DSE(priv) + EIP197_HIA_DSE_CFG(pe));
 695
 696		/* Leave the DSE threads reset state */
 697		writel(0, EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL(pe));
 698
 699		/* Configure the processing engine thresholds */
 700		writel(EIP197_PE_OUT_DBUF_THRES_MIN(opbuflo) |
 701		       EIP197_PE_OUT_DBUF_THRES_MAX(opbufhi),
 702		       EIP197_PE(priv) + EIP197_PE_OUT_DBUF_THRES(pe));
 703
 704		/* Processing Engine configuration */
 705
 706		/* Token & context configuration */
 707		val = EIP197_PE_EIP96_TOKEN_CTRL_CTX_UPDATES |
 708		      EIP197_PE_EIP96_TOKEN_CTRL_NO_TOKEN_WAIT |
 709		      EIP197_PE_EIP96_TOKEN_CTRL_ENABLE_TIMEOUT;
 710		writel(val, EIP197_PE(priv) + EIP197_PE_EIP96_TOKEN_CTRL(pe));
 711
 712		/* H/W capabilities selection: just enable everything */
 713		writel(EIP197_FUNCTION_ALL,
 714		       EIP197_PE(priv) + EIP197_PE_EIP96_FUNCTION_EN(pe));
 715		writel(EIP197_FUNCTION_ALL,
 716		       EIP197_PE(priv) + EIP197_PE_EIP96_FUNCTION2_EN(pe));
 717	}
 718
 719	/* Command Descriptor Rings prepare */
 720	for (i = 0; i < priv->config.rings; i++) {
 721		/* Clear interrupts for this ring */
 722		writel(GENMASK(31, 0),
 723		       EIP197_HIA_AIC_R(priv) + EIP197_HIA_AIC_R_ENABLE_CLR(i));
 724
 725		/* Disable external triggering */
 726		writel(0, EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_CFG);
 727
 728		/* Clear the pending prepared counter */
 729		writel(EIP197_xDR_PREP_CLR_COUNT,
 730		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_PREP_COUNT);
 731
 732		/* Clear the pending processed counter */
 733		writel(EIP197_xDR_PROC_CLR_COUNT,
 734		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_PROC_COUNT);
 735
 736		writel(0,
 737		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_PREP_PNTR);
 738		writel(0,
 739		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_PROC_PNTR);
 740
 741		writel((EIP197_DEFAULT_RING_SIZE * priv->config.cd_offset),
 742		       EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_RING_SIZE);
 743	}
 744
 745	/* Result Descriptor Ring prepare */
 746	for (i = 0; i < priv->config.rings; i++) {
 747		/* Disable external triggering*/
 748		writel(0, EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_CFG);
 749
 750		/* Clear the pending prepared counter */
 751		writel(EIP197_xDR_PREP_CLR_COUNT,
 752		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_PREP_COUNT);
 753
 754		/* Clear the pending processed counter */
 755		writel(EIP197_xDR_PROC_CLR_COUNT,
 756		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_PROC_COUNT);
 757
 758		writel(0,
 759		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_PREP_PNTR);
 760		writel(0,
 761		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_PROC_PNTR);
 762
 763		/* Ring size */
 764		writel((EIP197_DEFAULT_RING_SIZE * priv->config.rd_offset),
 765		       EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_RING_SIZE);
 766	}
 767
 768	for (pe = 0; pe < priv->config.pes; pe++) {
 769		/* Enable command descriptor rings */
 770		writel(EIP197_DxE_THR_CTRL_EN | GENMASK(priv->config.rings - 1, 0),
 771		       EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL(pe));
 772
 773		/* Enable result descriptor rings */
 774		writel(EIP197_DxE_THR_CTRL_EN | GENMASK(priv->config.rings - 1, 0),
 775		       EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL(pe));
 776	}
 777
 778	/* Clear any HIA interrupt */
 779	writel(GENMASK(30, 20), EIP197_HIA_AIC_G(priv) + EIP197_HIA_AIC_G_ACK);
 780
 781	if (priv->flags & EIP197_SIMPLE_TRC) {
 782		writel(EIP197_STRC_CONFIG_INIT |
 783		       EIP197_STRC_CONFIG_LARGE_REC(EIP197_CS_TRC_REC_WC) |
 784		       EIP197_STRC_CONFIG_SMALL_REC(EIP197_CS_TRC_REC_WC),
 785		       priv->base + EIP197_STRC_CONFIG);
 786		writel(EIP197_PE_EIP96_TOKEN_CTRL2_CTX_DONE,
 787		       EIP197_PE(priv) + EIP197_PE_EIP96_TOKEN_CTRL2(0));
 788	} else if (priv->flags & SAFEXCEL_HW_EIP197) {
 789		ret = eip197_trc_cache_init(priv);
 790		if (ret)
 791			return ret;
 792	}
 793
 794	if (priv->flags & EIP197_ICE) {
 795		ret = eip197_load_firmwares(priv);
 796		if (ret)
 797			return ret;
 798	}
 799
 800	return safexcel_hw_setup_cdesc_rings(priv) ?:
 801	       safexcel_hw_setup_rdesc_rings(priv) ?:
 802	       0;
 803}
 804
 805/* Called with ring's lock taken */
 806static void safexcel_try_push_requests(struct safexcel_crypto_priv *priv,
 807				       int ring)
 808{
 809	int coal = min_t(int, priv->ring[ring].requests, EIP197_MAX_BATCH_SZ);
 810
 811	if (!coal)
 812		return;
 813
 814	/* Configure when we want an interrupt */
 815	writel(EIP197_HIA_RDR_THRESH_PKT_MODE |
 816	       EIP197_HIA_RDR_THRESH_PROC_PKT(coal),
 817	       EIP197_HIA_RDR(priv, ring) + EIP197_HIA_xDR_THRESH);
 818}
 819
 820void safexcel_dequeue(struct safexcel_crypto_priv *priv, int ring)
 821{
 822	struct crypto_async_request *req, *backlog;
 823	struct safexcel_context *ctx;
 824	int ret, nreq = 0, cdesc = 0, rdesc = 0, commands, results;
 825
 826	/* If a request wasn't properly dequeued because of a lack of resources,
 827	 * proceeded it first,
 828	 */
 829	req = priv->ring[ring].req;
 830	backlog = priv->ring[ring].backlog;
 831	if (req)
 832		goto handle_req;
 833
 834	while (true) {
 835		spin_lock_bh(&priv->ring[ring].queue_lock);
 836		backlog = crypto_get_backlog(&priv->ring[ring].queue);
 837		req = crypto_dequeue_request(&priv->ring[ring].queue);
 838		spin_unlock_bh(&priv->ring[ring].queue_lock);
 839
 840		if (!req) {
 841			priv->ring[ring].req = NULL;
 842			priv->ring[ring].backlog = NULL;
 843			goto finalize;
 844		}
 845
 846handle_req:
 847		ctx = crypto_tfm_ctx(req->tfm);
 848		ret = ctx->send(req, ring, &commands, &results);
 849		if (ret)
 850			goto request_failed;
 851
 852		if (backlog)
 853			crypto_request_complete(backlog, -EINPROGRESS);
 854
 855		/* In case the send() helper did not issue any command to push
 856		 * to the engine because the input data was cached, continue to
 857		 * dequeue other requests as this is valid and not an error.
 858		 */
 859		if (!commands && !results)
 860			continue;
 861
 862		cdesc += commands;
 863		rdesc += results;
 864		nreq++;
 865	}
 866
 867request_failed:
 868	/* Not enough resources to handle all the requests. Bail out and save
 869	 * the request and the backlog for the next dequeue call (per-ring).
 870	 */
 871	priv->ring[ring].req = req;
 872	priv->ring[ring].backlog = backlog;
 873
 874finalize:
 875	if (!nreq)
 876		return;
 877
 878	spin_lock_bh(&priv->ring[ring].lock);
 879
 880	priv->ring[ring].requests += nreq;
 881
 882	if (!priv->ring[ring].busy) {
 883		safexcel_try_push_requests(priv, ring);
 884		priv->ring[ring].busy = true;
 885	}
 886
 887	spin_unlock_bh(&priv->ring[ring].lock);
 888
 889	/* let the RDR know we have pending descriptors */
 890	writel((rdesc * priv->config.rd_offset),
 891	       EIP197_HIA_RDR(priv, ring) + EIP197_HIA_xDR_PREP_COUNT);
 892
 893	/* let the CDR know we have pending descriptors */
 894	writel((cdesc * priv->config.cd_offset),
 895	       EIP197_HIA_CDR(priv, ring) + EIP197_HIA_xDR_PREP_COUNT);
 896}
 897
 898inline int safexcel_rdesc_check_errors(struct safexcel_crypto_priv *priv,
 899				       void *rdp)
 900{
 901	struct safexcel_result_desc *rdesc = rdp;
 902	struct result_data_desc *result_data = rdp + priv->config.res_offset;
 903
 904	if (likely((!rdesc->last_seg) || /* Rest only valid if last seg! */
 905		   ((!rdesc->descriptor_overflow) &&
 906		    (!rdesc->buffer_overflow) &&
 907		    (!result_data->error_code))))
 908		return 0;
 909
 910	if (rdesc->descriptor_overflow)
 911		dev_err(priv->dev, "Descriptor overflow detected");
 912
 913	if (rdesc->buffer_overflow)
 914		dev_err(priv->dev, "Buffer overflow detected");
 915
 916	if (result_data->error_code & 0x4066) {
 917		/* Fatal error (bits 1,2,5,6 & 14) */
 918		dev_err(priv->dev,
 919			"result descriptor error (%x)",
 920			result_data->error_code);
 921
 922		return -EIO;
 923	} else if (result_data->error_code &
 924		   (BIT(7) | BIT(4) | BIT(3) | BIT(0))) {
 925		/*
 926		 * Give priority over authentication fails:
 927		 * Blocksize, length & overflow errors,
 928		 * something wrong with the input!
 929		 */
 930		return -EINVAL;
 931	} else if (result_data->error_code & BIT(9)) {
 932		/* Authentication failed */
 933		return -EBADMSG;
 934	}
 935
 936	/* All other non-fatal errors */
 937	return -EINVAL;
 938}
 939
 940inline void safexcel_rdr_req_set(struct safexcel_crypto_priv *priv,
 941				 int ring,
 942				 struct safexcel_result_desc *rdesc,
 943				 struct crypto_async_request *req)
 944{
 945	int i = safexcel_ring_rdr_rdesc_index(priv, ring, rdesc);
 946
 947	priv->ring[ring].rdr_req[i] = req;
 948}
 949
 950inline struct crypto_async_request *
 951safexcel_rdr_req_get(struct safexcel_crypto_priv *priv, int ring)
 952{
 953	int i = safexcel_ring_first_rdr_index(priv, ring);
 954
 955	return priv->ring[ring].rdr_req[i];
 956}
 957
 958void safexcel_complete(struct safexcel_crypto_priv *priv, int ring)
 959{
 960	struct safexcel_command_desc *cdesc;
 961
 962	/* Acknowledge the command descriptors */
 963	do {
 964		cdesc = safexcel_ring_next_rptr(priv, &priv->ring[ring].cdr);
 965		if (IS_ERR(cdesc)) {
 966			dev_err(priv->dev,
 967				"Could not retrieve the command descriptor\n");
 968			return;
 969		}
 970	} while (!cdesc->last_seg);
 971}
 972
 
 
 
 
 
 
 
 
 
 
 
 973int safexcel_invalidate_cache(struct crypto_async_request *async,
 974			      struct safexcel_crypto_priv *priv,
 975			      dma_addr_t ctxr_dma, int ring)
 976{
 977	struct safexcel_command_desc *cdesc;
 978	struct safexcel_result_desc *rdesc;
 979	struct safexcel_token  *dmmy;
 980	int ret = 0;
 981
 982	/* Prepare command descriptor */
 983	cdesc = safexcel_add_cdesc(priv, ring, true, true, 0, 0, 0, ctxr_dma,
 984				   &dmmy);
 985	if (IS_ERR(cdesc))
 986		return PTR_ERR(cdesc);
 987
 988	cdesc->control_data.type = EIP197_TYPE_EXTENDED;
 989	cdesc->control_data.options = 0;
 990	cdesc->control_data.context_lo &= ~EIP197_CONTEXT_SIZE_MASK;
 991	cdesc->control_data.control0 = CONTEXT_CONTROL_INV_TR;
 992
 993	/* Prepare result descriptor */
 994	rdesc = safexcel_add_rdesc(priv, ring, true, true, 0, 0);
 995
 996	if (IS_ERR(rdesc)) {
 997		ret = PTR_ERR(rdesc);
 998		goto cdesc_rollback;
 999	}
1000
1001	safexcel_rdr_req_set(priv, ring, rdesc, async);
1002
1003	return ret;
1004
1005cdesc_rollback:
1006	safexcel_ring_rollback_wptr(priv, &priv->ring[ring].cdr);
1007
1008	return ret;
1009}
1010
1011static inline void safexcel_handle_result_descriptor(struct safexcel_crypto_priv *priv,
1012						     int ring)
1013{
1014	struct crypto_async_request *req;
1015	struct safexcel_context *ctx;
1016	int ret, i, nreq, ndesc, tot_descs, handled = 0;
1017	bool should_complete;
1018
1019handle_results:
1020	tot_descs = 0;
1021
1022	nreq = readl(EIP197_HIA_RDR(priv, ring) + EIP197_HIA_xDR_PROC_COUNT);
1023	nreq >>= EIP197_xDR_PROC_xD_PKT_OFFSET;
1024	nreq &= EIP197_xDR_PROC_xD_PKT_MASK;
1025	if (!nreq)
1026		goto requests_left;
1027
1028	for (i = 0; i < nreq; i++) {
1029		req = safexcel_rdr_req_get(priv, ring);
1030
1031		ctx = crypto_tfm_ctx(req->tfm);
1032		ndesc = ctx->handle_result(priv, ring, req,
1033					   &should_complete, &ret);
1034		if (ndesc < 0) {
1035			dev_err(priv->dev, "failed to handle result (%d)\n",
1036				ndesc);
1037			goto acknowledge;
1038		}
1039
1040		if (should_complete) {
1041			local_bh_disable();
1042			crypto_request_complete(req, ret);
1043			local_bh_enable();
1044		}
1045
1046		tot_descs += ndesc;
1047		handled++;
1048	}
1049
1050acknowledge:
1051	if (i)
1052		writel(EIP197_xDR_PROC_xD_PKT(i) |
1053		       (tot_descs * priv->config.rd_offset),
1054		       EIP197_HIA_RDR(priv, ring) + EIP197_HIA_xDR_PROC_COUNT);
1055
1056	/* If the number of requests overflowed the counter, try to proceed more
1057	 * requests.
1058	 */
1059	if (nreq == EIP197_xDR_PROC_xD_PKT_MASK)
1060		goto handle_results;
1061
1062requests_left:
1063	spin_lock_bh(&priv->ring[ring].lock);
1064
1065	priv->ring[ring].requests -= handled;
1066	safexcel_try_push_requests(priv, ring);
1067
1068	if (!priv->ring[ring].requests)
1069		priv->ring[ring].busy = false;
1070
1071	spin_unlock_bh(&priv->ring[ring].lock);
1072}
1073
1074static void safexcel_dequeue_work(struct work_struct *work)
1075{
1076	struct safexcel_work_data *data =
1077			container_of(work, struct safexcel_work_data, work);
1078
1079	safexcel_dequeue(data->priv, data->ring);
1080}
1081
1082struct safexcel_ring_irq_data {
1083	struct safexcel_crypto_priv *priv;
1084	int ring;
1085};
1086
1087static irqreturn_t safexcel_irq_ring(int irq, void *data)
1088{
1089	struct safexcel_ring_irq_data *irq_data = data;
1090	struct safexcel_crypto_priv *priv = irq_data->priv;
1091	int ring = irq_data->ring, rc = IRQ_NONE;
1092	u32 status, stat;
1093
1094	status = readl(EIP197_HIA_AIC_R(priv) + EIP197_HIA_AIC_R_ENABLED_STAT(ring));
1095	if (!status)
1096		return rc;
1097
1098	/* RDR interrupts */
1099	if (status & EIP197_RDR_IRQ(ring)) {
1100		stat = readl(EIP197_HIA_RDR(priv, ring) + EIP197_HIA_xDR_STAT);
1101
1102		if (unlikely(stat & EIP197_xDR_ERR)) {
1103			/*
1104			 * Fatal error, the RDR is unusable and must be
1105			 * reinitialized. This should not happen under
1106			 * normal circumstances.
1107			 */
1108			dev_err(priv->dev, "RDR: fatal error.\n");
1109		} else if (likely(stat & EIP197_xDR_THRESH)) {
1110			rc = IRQ_WAKE_THREAD;
1111		}
1112
1113		/* ACK the interrupts */
1114		writel(stat & 0xff,
1115		       EIP197_HIA_RDR(priv, ring) + EIP197_HIA_xDR_STAT);
1116	}
1117
1118	/* ACK the interrupts */
1119	writel(status, EIP197_HIA_AIC_R(priv) + EIP197_HIA_AIC_R_ACK(ring));
1120
1121	return rc;
1122}
1123
1124static irqreturn_t safexcel_irq_ring_thread(int irq, void *data)
1125{
1126	struct safexcel_ring_irq_data *irq_data = data;
1127	struct safexcel_crypto_priv *priv = irq_data->priv;
1128	int ring = irq_data->ring;
1129
1130	safexcel_handle_result_descriptor(priv, ring);
1131
1132	queue_work(priv->ring[ring].workqueue,
1133		   &priv->ring[ring].work_data.work);
1134
1135	return IRQ_HANDLED;
1136}
1137
1138static int safexcel_request_ring_irq(void *pdev, int irqid,
1139				     int is_pci_dev,
1140				     int ring_id,
1141				     irq_handler_t handler,
1142				     irq_handler_t threaded_handler,
1143				     struct safexcel_ring_irq_data *ring_irq_priv)
1144{
1145	int ret, irq, cpu;
1146	struct device *dev;
1147
1148	if (IS_ENABLED(CONFIG_PCI) && is_pci_dev) {
1149		struct pci_dev *pci_pdev = pdev;
1150
1151		dev = &pci_pdev->dev;
1152		irq = pci_irq_vector(pci_pdev, irqid);
1153		if (irq < 0) {
1154			dev_err(dev, "unable to get device MSI IRQ %d (err %d)\n",
1155				irqid, irq);
1156			return irq;
1157		}
1158	} else if (IS_ENABLED(CONFIG_OF)) {
1159		struct platform_device *plf_pdev = pdev;
1160		char irq_name[6] = {0}; /* "ringX\0" */
1161
1162		snprintf(irq_name, 6, "ring%d", irqid);
1163		dev = &plf_pdev->dev;
1164		irq = platform_get_irq_byname(plf_pdev, irq_name);
1165
1166		if (irq < 0)
1167			return irq;
1168	} else {
1169		return -ENXIO;
1170	}
1171
1172	ret = devm_request_threaded_irq(dev, irq, handler,
1173					threaded_handler, IRQF_ONESHOT,
1174					dev_name(dev), ring_irq_priv);
1175	if (ret) {
1176		dev_err(dev, "unable to request IRQ %d\n", irq);
1177		return ret;
1178	}
1179
1180	/* Set affinity */
1181	cpu = cpumask_local_spread(ring_id, NUMA_NO_NODE);
1182	irq_set_affinity_hint(irq, get_cpu_mask(cpu));
1183
1184	return irq;
1185}
1186
1187static struct safexcel_alg_template *safexcel_algs[] = {
1188	&safexcel_alg_ecb_des,
1189	&safexcel_alg_cbc_des,
1190	&safexcel_alg_ecb_des3_ede,
1191	&safexcel_alg_cbc_des3_ede,
1192	&safexcel_alg_ecb_aes,
1193	&safexcel_alg_cbc_aes,
 
 
1194	&safexcel_alg_ctr_aes,
1195	&safexcel_alg_md5,
1196	&safexcel_alg_sha1,
1197	&safexcel_alg_sha224,
1198	&safexcel_alg_sha256,
1199	&safexcel_alg_sha384,
1200	&safexcel_alg_sha512,
1201	&safexcel_alg_hmac_md5,
1202	&safexcel_alg_hmac_sha1,
1203	&safexcel_alg_hmac_sha224,
1204	&safexcel_alg_hmac_sha256,
1205	&safexcel_alg_hmac_sha384,
1206	&safexcel_alg_hmac_sha512,
1207	&safexcel_alg_authenc_hmac_sha1_cbc_aes,
1208	&safexcel_alg_authenc_hmac_sha224_cbc_aes,
1209	&safexcel_alg_authenc_hmac_sha256_cbc_aes,
1210	&safexcel_alg_authenc_hmac_sha384_cbc_aes,
1211	&safexcel_alg_authenc_hmac_sha512_cbc_aes,
1212	&safexcel_alg_authenc_hmac_sha1_cbc_des3_ede,
1213	&safexcel_alg_authenc_hmac_sha1_ctr_aes,
1214	&safexcel_alg_authenc_hmac_sha224_ctr_aes,
1215	&safexcel_alg_authenc_hmac_sha256_ctr_aes,
1216	&safexcel_alg_authenc_hmac_sha384_ctr_aes,
1217	&safexcel_alg_authenc_hmac_sha512_ctr_aes,
1218	&safexcel_alg_xts_aes,
1219	&safexcel_alg_gcm,
1220	&safexcel_alg_ccm,
1221	&safexcel_alg_crc32,
1222	&safexcel_alg_cbcmac,
1223	&safexcel_alg_xcbcmac,
1224	&safexcel_alg_cmac,
1225	&safexcel_alg_chacha20,
1226	&safexcel_alg_chachapoly,
1227	&safexcel_alg_chachapoly_esp,
1228	&safexcel_alg_sm3,
1229	&safexcel_alg_hmac_sm3,
1230	&safexcel_alg_ecb_sm4,
1231	&safexcel_alg_cbc_sm4,
 
 
1232	&safexcel_alg_ctr_sm4,
1233	&safexcel_alg_authenc_hmac_sha1_cbc_sm4,
1234	&safexcel_alg_authenc_hmac_sm3_cbc_sm4,
1235	&safexcel_alg_authenc_hmac_sha1_ctr_sm4,
1236	&safexcel_alg_authenc_hmac_sm3_ctr_sm4,
1237	&safexcel_alg_sha3_224,
1238	&safexcel_alg_sha3_256,
1239	&safexcel_alg_sha3_384,
1240	&safexcel_alg_sha3_512,
1241	&safexcel_alg_hmac_sha3_224,
1242	&safexcel_alg_hmac_sha3_256,
1243	&safexcel_alg_hmac_sha3_384,
1244	&safexcel_alg_hmac_sha3_512,
1245	&safexcel_alg_authenc_hmac_sha1_cbc_des,
1246	&safexcel_alg_authenc_hmac_sha256_cbc_des3_ede,
1247	&safexcel_alg_authenc_hmac_sha224_cbc_des3_ede,
1248	&safexcel_alg_authenc_hmac_sha512_cbc_des3_ede,
1249	&safexcel_alg_authenc_hmac_sha384_cbc_des3_ede,
1250	&safexcel_alg_authenc_hmac_sha256_cbc_des,
1251	&safexcel_alg_authenc_hmac_sha224_cbc_des,
1252	&safexcel_alg_authenc_hmac_sha512_cbc_des,
1253	&safexcel_alg_authenc_hmac_sha384_cbc_des,
1254	&safexcel_alg_rfc4106_gcm,
1255	&safexcel_alg_rfc4543_gcm,
1256	&safexcel_alg_rfc4309_ccm,
1257};
1258
1259static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv)
1260{
1261	int i, j, ret = 0;
1262
1263	for (i = 0; i < ARRAY_SIZE(safexcel_algs); i++) {
1264		safexcel_algs[i]->priv = priv;
1265
1266		/* Do we have all required base algorithms available? */
1267		if ((safexcel_algs[i]->algo_mask & priv->hwconfig.algo_flags) !=
1268		    safexcel_algs[i]->algo_mask)
1269			/* No, so don't register this ciphersuite */
1270			continue;
1271
1272		if (safexcel_algs[i]->type == SAFEXCEL_ALG_TYPE_SKCIPHER)
1273			ret = crypto_register_skcipher(&safexcel_algs[i]->alg.skcipher);
1274		else if (safexcel_algs[i]->type == SAFEXCEL_ALG_TYPE_AEAD)
1275			ret = crypto_register_aead(&safexcel_algs[i]->alg.aead);
1276		else
1277			ret = crypto_register_ahash(&safexcel_algs[i]->alg.ahash);
1278
1279		if (ret)
1280			goto fail;
1281	}
1282
1283	return 0;
1284
1285fail:
1286	for (j = 0; j < i; j++) {
1287		/* Do we have all required base algorithms available? */
1288		if ((safexcel_algs[j]->algo_mask & priv->hwconfig.algo_flags) !=
1289		    safexcel_algs[j]->algo_mask)
1290			/* No, so don't unregister this ciphersuite */
1291			continue;
1292
1293		if (safexcel_algs[j]->type == SAFEXCEL_ALG_TYPE_SKCIPHER)
1294			crypto_unregister_skcipher(&safexcel_algs[j]->alg.skcipher);
1295		else if (safexcel_algs[j]->type == SAFEXCEL_ALG_TYPE_AEAD)
1296			crypto_unregister_aead(&safexcel_algs[j]->alg.aead);
1297		else
1298			crypto_unregister_ahash(&safexcel_algs[j]->alg.ahash);
1299	}
1300
1301	return ret;
1302}
1303
1304static void safexcel_unregister_algorithms(struct safexcel_crypto_priv *priv)
1305{
1306	int i;
1307
1308	for (i = 0; i < ARRAY_SIZE(safexcel_algs); i++) {
1309		/* Do we have all required base algorithms available? */
1310		if ((safexcel_algs[i]->algo_mask & priv->hwconfig.algo_flags) !=
1311		    safexcel_algs[i]->algo_mask)
1312			/* No, so don't unregister this ciphersuite */
1313			continue;
1314
1315		if (safexcel_algs[i]->type == SAFEXCEL_ALG_TYPE_SKCIPHER)
1316			crypto_unregister_skcipher(&safexcel_algs[i]->alg.skcipher);
1317		else if (safexcel_algs[i]->type == SAFEXCEL_ALG_TYPE_AEAD)
1318			crypto_unregister_aead(&safexcel_algs[i]->alg.aead);
1319		else
1320			crypto_unregister_ahash(&safexcel_algs[i]->alg.ahash);
1321	}
1322}
1323
1324static void safexcel_configure(struct safexcel_crypto_priv *priv)
1325{
1326	u32 mask = BIT(priv->hwconfig.hwdataw) - 1;
1327
1328	priv->config.pes = priv->hwconfig.hwnumpes;
1329	priv->config.rings = min_t(u32, priv->hwconfig.hwnumrings, max_rings);
1330	/* Cannot currently support more rings than we have ring AICs! */
1331	priv->config.rings = min_t(u32, priv->config.rings,
1332					priv->hwconfig.hwnumraic);
1333
1334	priv->config.cd_size = EIP197_CD64_FETCH_SIZE;
1335	priv->config.cd_offset = (priv->config.cd_size + mask) & ~mask;
1336	priv->config.cdsh_offset = (EIP197_MAX_TOKENS + mask) & ~mask;
1337
1338	/* res token is behind the descr, but ofs must be rounded to buswdth */
1339	priv->config.res_offset = (EIP197_RD64_FETCH_SIZE + mask) & ~mask;
1340	/* now the size of the descr is this 1st part plus the result struct */
1341	priv->config.rd_size    = priv->config.res_offset +
1342				  EIP197_RD64_RESULT_SIZE;
1343	priv->config.rd_offset = (priv->config.rd_size + mask) & ~mask;
1344
1345	/* convert dwords to bytes */
1346	priv->config.cd_offset *= sizeof(u32);
1347	priv->config.cdsh_offset *= sizeof(u32);
1348	priv->config.rd_offset *= sizeof(u32);
1349	priv->config.res_offset *= sizeof(u32);
1350}
1351
1352static void safexcel_init_register_offsets(struct safexcel_crypto_priv *priv)
1353{
1354	struct safexcel_register_offsets *offsets = &priv->offsets;
1355
1356	if (priv->flags & SAFEXCEL_HW_EIP197) {
1357		offsets->hia_aic	= EIP197_HIA_AIC_BASE;
1358		offsets->hia_aic_g	= EIP197_HIA_AIC_G_BASE;
1359		offsets->hia_aic_r	= EIP197_HIA_AIC_R_BASE;
1360		offsets->hia_aic_xdr	= EIP197_HIA_AIC_xDR_BASE;
1361		offsets->hia_dfe	= EIP197_HIA_DFE_BASE;
1362		offsets->hia_dfe_thr	= EIP197_HIA_DFE_THR_BASE;
1363		offsets->hia_dse	= EIP197_HIA_DSE_BASE;
1364		offsets->hia_dse_thr	= EIP197_HIA_DSE_THR_BASE;
1365		offsets->hia_gen_cfg	= EIP197_HIA_GEN_CFG_BASE;
1366		offsets->pe		= EIP197_PE_BASE;
1367		offsets->global		= EIP197_GLOBAL_BASE;
1368	} else {
1369		offsets->hia_aic	= EIP97_HIA_AIC_BASE;
1370		offsets->hia_aic_g	= EIP97_HIA_AIC_G_BASE;
1371		offsets->hia_aic_r	= EIP97_HIA_AIC_R_BASE;
1372		offsets->hia_aic_xdr	= EIP97_HIA_AIC_xDR_BASE;
1373		offsets->hia_dfe	= EIP97_HIA_DFE_BASE;
1374		offsets->hia_dfe_thr	= EIP97_HIA_DFE_THR_BASE;
1375		offsets->hia_dse	= EIP97_HIA_DSE_BASE;
1376		offsets->hia_dse_thr	= EIP97_HIA_DSE_THR_BASE;
1377		offsets->hia_gen_cfg	= EIP97_HIA_GEN_CFG_BASE;
1378		offsets->pe		= EIP97_PE_BASE;
1379		offsets->global		= EIP97_GLOBAL_BASE;
1380	}
1381}
1382
1383/*
1384 * Generic part of probe routine, shared by platform and PCI driver
1385 *
1386 * Assumes IO resources have been mapped, private data mem has been allocated,
1387 * clocks have been enabled, device pointer has been assigned etc.
1388 *
1389 */
1390static int safexcel_probe_generic(void *pdev,
1391				  struct safexcel_crypto_priv *priv,
1392				  int is_pci_dev)
1393{
1394	struct device *dev = priv->dev;
1395	u32 peid, version, mask, val, hiaopt, hwopt, peopt;
1396	int i, ret, hwctg;
1397
1398	priv->context_pool = dmam_pool_create("safexcel-context", dev,
1399					      sizeof(struct safexcel_context_record),
1400					      1, 0);
1401	if (!priv->context_pool)
1402		return -ENOMEM;
1403
1404	/*
1405	 * First try the EIP97 HIA version regs
1406	 * For the EIP197, this is guaranteed to NOT return any of the test
1407	 * values
1408	 */
1409	version = readl(priv->base + EIP97_HIA_AIC_BASE + EIP197_HIA_VERSION);
1410
1411	mask = 0;  /* do not swap */
1412	if (EIP197_REG_LO16(version) == EIP197_HIA_VERSION_LE) {
1413		priv->hwconfig.hiaver = EIP197_VERSION_MASK(version);
1414	} else if (EIP197_REG_HI16(version) == EIP197_HIA_VERSION_BE) {
1415		/* read back byte-swapped, so complement byte swap bits */
1416		mask = EIP197_MST_CTRL_BYTE_SWAP_BITS;
1417		priv->hwconfig.hiaver = EIP197_VERSION_SWAP(version);
1418	} else {
1419		/* So it wasn't an EIP97 ... maybe it's an EIP197? */
1420		version = readl(priv->base + EIP197_HIA_AIC_BASE +
1421				EIP197_HIA_VERSION);
1422		if (EIP197_REG_LO16(version) == EIP197_HIA_VERSION_LE) {
1423			priv->hwconfig.hiaver = EIP197_VERSION_MASK(version);
1424			priv->flags |= SAFEXCEL_HW_EIP197;
1425		} else if (EIP197_REG_HI16(version) ==
1426			   EIP197_HIA_VERSION_BE) {
1427			/* read back byte-swapped, so complement swap bits */
1428			mask = EIP197_MST_CTRL_BYTE_SWAP_BITS;
1429			priv->hwconfig.hiaver = EIP197_VERSION_SWAP(version);
1430			priv->flags |= SAFEXCEL_HW_EIP197;
1431		} else {
1432			return -ENODEV;
1433		}
1434	}
1435
1436	/* Now initialize the reg offsets based on the probing info so far */
1437	safexcel_init_register_offsets(priv);
1438
1439	/*
1440	 * If the version was read byte-swapped, we need to flip the device
1441	 * swapping Keep in mind here, though, that what we write will also be
1442	 * byte-swapped ...
1443	 */
1444	if (mask) {
1445		val = readl(EIP197_HIA_AIC(priv) + EIP197_HIA_MST_CTRL);
1446		val = val ^ (mask >> 24); /* toggle byte swap bits */
1447		writel(val, EIP197_HIA_AIC(priv) + EIP197_HIA_MST_CTRL);
1448	}
1449
1450	/*
1451	 * We're not done probing yet! We may fall through to here if no HIA
1452	 * was found at all. So, with the endianness presumably correct now and
1453	 * the offsets setup, *really* probe for the EIP97/EIP197.
1454	 */
1455	version = readl(EIP197_GLOBAL(priv) + EIP197_VERSION);
1456	if (((priv->flags & SAFEXCEL_HW_EIP197) &&
1457	     (EIP197_REG_LO16(version) != EIP197_VERSION_LE) &&
1458	     (EIP197_REG_LO16(version) != EIP196_VERSION_LE)) ||
1459	    ((!(priv->flags & SAFEXCEL_HW_EIP197) &&
1460	     (EIP197_REG_LO16(version) != EIP97_VERSION_LE)))) {
1461		/*
1462		 * We did not find the device that matched our initial probing
1463		 * (or our initial probing failed) Report appropriate error.
1464		 */
1465		dev_err(priv->dev, "Probing for EIP97/EIP19x failed - no such device (read %08x)\n",
1466			version);
1467		return -ENODEV;
1468	}
1469
1470	priv->hwconfig.hwver = EIP197_VERSION_MASK(version);
1471	hwctg = version >> 28;
1472	peid = version & 255;
1473
1474	/* Detect EIP206 processing pipe */
1475	version = readl(EIP197_PE(priv) + + EIP197_PE_VERSION(0));
1476	if (EIP197_REG_LO16(version) != EIP206_VERSION_LE) {
1477		dev_err(priv->dev, "EIP%d: EIP206 not detected\n", peid);
1478		return -ENODEV;
1479	}
1480	priv->hwconfig.ppver = EIP197_VERSION_MASK(version);
1481
1482	/* Detect EIP96 packet engine and version */
1483	version = readl(EIP197_PE(priv) + EIP197_PE_EIP96_VERSION(0));
1484	if (EIP197_REG_LO16(version) != EIP96_VERSION_LE) {
1485		dev_err(dev, "EIP%d: EIP96 not detected.\n", peid);
1486		return -ENODEV;
1487	}
1488	priv->hwconfig.pever = EIP197_VERSION_MASK(version);
1489
1490	hwopt = readl(EIP197_GLOBAL(priv) + EIP197_OPTIONS);
1491	hiaopt = readl(EIP197_HIA_AIC(priv) + EIP197_HIA_OPTIONS);
1492
1493	priv->hwconfig.icever = 0;
1494	priv->hwconfig.ocever = 0;
1495	priv->hwconfig.psever = 0;
1496	if (priv->flags & SAFEXCEL_HW_EIP197) {
1497		/* EIP197 */
1498		peopt = readl(EIP197_PE(priv) + EIP197_PE_OPTIONS(0));
1499
1500		priv->hwconfig.hwdataw  = (hiaopt >> EIP197_HWDATAW_OFFSET) &
1501					  EIP197_HWDATAW_MASK;
1502		priv->hwconfig.hwcfsize = ((hiaopt >> EIP197_CFSIZE_OFFSET) &
1503					   EIP197_CFSIZE_MASK) +
1504					  EIP197_CFSIZE_ADJUST;
1505		priv->hwconfig.hwrfsize = ((hiaopt >> EIP197_RFSIZE_OFFSET) &
1506					   EIP197_RFSIZE_MASK) +
1507					  EIP197_RFSIZE_ADJUST;
1508		priv->hwconfig.hwnumpes	= (hiaopt >> EIP197_N_PES_OFFSET) &
1509					  EIP197_N_PES_MASK;
1510		priv->hwconfig.hwnumrings = (hiaopt >> EIP197_N_RINGS_OFFSET) &
1511					    EIP197_N_RINGS_MASK;
1512		if (hiaopt & EIP197_HIA_OPT_HAS_PE_ARB)
1513			priv->flags |= EIP197_PE_ARB;
1514		if (EIP206_OPT_ICE_TYPE(peopt) == 1) {
1515			priv->flags |= EIP197_ICE;
1516			/* Detect ICE EIP207 class. engine and version */
1517			version = readl(EIP197_PE(priv) +
1518				  EIP197_PE_ICE_VERSION(0));
1519			if (EIP197_REG_LO16(version) != EIP207_VERSION_LE) {
1520				dev_err(dev, "EIP%d: ICE EIP207 not detected.\n",
1521					peid);
1522				return -ENODEV;
1523			}
1524			priv->hwconfig.icever = EIP197_VERSION_MASK(version);
1525		}
1526		if (EIP206_OPT_OCE_TYPE(peopt) == 1) {
1527			priv->flags |= EIP197_OCE;
1528			/* Detect EIP96PP packet stream editor and version */
1529			version = readl(EIP197_PE(priv) + EIP197_PE_PSE_VERSION(0));
1530			if (EIP197_REG_LO16(version) != EIP96_VERSION_LE) {
1531				dev_err(dev, "EIP%d: EIP96PP not detected.\n", peid);
1532				return -ENODEV;
1533			}
1534			priv->hwconfig.psever = EIP197_VERSION_MASK(version);
1535			/* Detect OCE EIP207 class. engine and version */
1536			version = readl(EIP197_PE(priv) +
1537				  EIP197_PE_ICE_VERSION(0));
1538			if (EIP197_REG_LO16(version) != EIP207_VERSION_LE) {
1539				dev_err(dev, "EIP%d: OCE EIP207 not detected.\n",
1540					peid);
1541				return -ENODEV;
1542			}
1543			priv->hwconfig.ocever = EIP197_VERSION_MASK(version);
1544		}
1545		/* If not a full TRC, then assume simple TRC */
1546		if (!(hwopt & EIP197_OPT_HAS_TRC))
1547			priv->flags |= EIP197_SIMPLE_TRC;
1548		/* EIP197 always has SOME form of TRC */
1549		priv->flags |= EIP197_TRC_CACHE;
1550	} else {
1551		/* EIP97 */
1552		priv->hwconfig.hwdataw  = (hiaopt >> EIP197_HWDATAW_OFFSET) &
1553					  EIP97_HWDATAW_MASK;
1554		priv->hwconfig.hwcfsize = (hiaopt >> EIP97_CFSIZE_OFFSET) &
1555					  EIP97_CFSIZE_MASK;
1556		priv->hwconfig.hwrfsize = (hiaopt >> EIP97_RFSIZE_OFFSET) &
1557					  EIP97_RFSIZE_MASK;
1558		priv->hwconfig.hwnumpes	= 1; /* by definition */
1559		priv->hwconfig.hwnumrings = (hiaopt >> EIP197_N_RINGS_OFFSET) &
1560					    EIP197_N_RINGS_MASK;
1561	}
1562
1563	/* Scan for ring AIC's */
1564	for (i = 0; i < EIP197_MAX_RING_AIC; i++) {
1565		version = readl(EIP197_HIA_AIC_R(priv) +
1566				EIP197_HIA_AIC_R_VERSION(i));
1567		if (EIP197_REG_LO16(version) != EIP201_VERSION_LE)
1568			break;
1569	}
1570	priv->hwconfig.hwnumraic = i;
1571	/* Low-end EIP196 may not have any ring AIC's ... */
1572	if (!priv->hwconfig.hwnumraic) {
1573		dev_err(priv->dev, "No ring interrupt controller present!\n");
1574		return -ENODEV;
1575	}
1576
1577	/* Get supported algorithms from EIP96 transform engine */
1578	priv->hwconfig.algo_flags = readl(EIP197_PE(priv) +
1579				    EIP197_PE_EIP96_OPTIONS(0));
1580
1581	/* Print single info line describing what we just detected */
1582	dev_info(priv->dev, "EIP%d:%x(%d,%d,%d,%d)-HIA:%x(%d,%d,%d),PE:%x/%x(alg:%08x)/%x/%x/%x\n",
1583		 peid, priv->hwconfig.hwver, hwctg, priv->hwconfig.hwnumpes,
1584		 priv->hwconfig.hwnumrings, priv->hwconfig.hwnumraic,
1585		 priv->hwconfig.hiaver, priv->hwconfig.hwdataw,
1586		 priv->hwconfig.hwcfsize, priv->hwconfig.hwrfsize,
1587		 priv->hwconfig.ppver, priv->hwconfig.pever,
1588		 priv->hwconfig.algo_flags, priv->hwconfig.icever,
1589		 priv->hwconfig.ocever, priv->hwconfig.psever);
1590
1591	safexcel_configure(priv);
1592
1593	if (IS_ENABLED(CONFIG_PCI) && priv->data->version == EIP197_DEVBRD) {
1594		/*
1595		 * Request MSI vectors for global + 1 per ring -
1596		 * or just 1 for older dev images
1597		 */
1598		struct pci_dev *pci_pdev = pdev;
1599
1600		ret = pci_alloc_irq_vectors(pci_pdev,
1601					    priv->config.rings + 1,
1602					    priv->config.rings + 1,
1603					    PCI_IRQ_MSI | PCI_IRQ_MSIX);
1604		if (ret < 0) {
1605			dev_err(dev, "Failed to allocate PCI MSI interrupts\n");
1606			return ret;
1607		}
1608	}
1609
1610	/* Register the ring IRQ handlers and configure the rings */
1611	priv->ring = devm_kcalloc(dev, priv->config.rings,
1612				  sizeof(*priv->ring),
1613				  GFP_KERNEL);
1614	if (!priv->ring)
1615		return -ENOMEM;
1616
1617	for (i = 0; i < priv->config.rings; i++) {
1618		char wq_name[9] = {0};
1619		int irq;
1620		struct safexcel_ring_irq_data *ring_irq;
1621
1622		ret = safexcel_init_ring_descriptors(priv,
1623						     &priv->ring[i].cdr,
1624						     &priv->ring[i].rdr);
1625		if (ret) {
1626			dev_err(dev, "Failed to initialize rings\n");
1627			goto err_cleanup_rings;
1628		}
1629
1630		priv->ring[i].rdr_req = devm_kcalloc(dev,
1631			EIP197_DEFAULT_RING_SIZE,
1632			sizeof(*priv->ring[i].rdr_req),
1633			GFP_KERNEL);
1634		if (!priv->ring[i].rdr_req) {
1635			ret = -ENOMEM;
1636			goto err_cleanup_rings;
1637		}
1638
1639		ring_irq = devm_kzalloc(dev, sizeof(*ring_irq), GFP_KERNEL);
1640		if (!ring_irq) {
1641			ret = -ENOMEM;
1642			goto err_cleanup_rings;
1643		}
1644
1645		ring_irq->priv = priv;
1646		ring_irq->ring = i;
1647
1648		irq = safexcel_request_ring_irq(pdev,
1649						EIP197_IRQ_NUMBER(i, is_pci_dev),
1650						is_pci_dev,
1651						i,
1652						safexcel_irq_ring,
1653						safexcel_irq_ring_thread,
1654						ring_irq);
1655		if (irq < 0) {
1656			dev_err(dev, "Failed to get IRQ ID for ring %d\n", i);
1657			ret = irq;
1658			goto err_cleanup_rings;
1659		}
1660
1661		priv->ring[i].irq = irq;
1662		priv->ring[i].work_data.priv = priv;
1663		priv->ring[i].work_data.ring = i;
1664		INIT_WORK(&priv->ring[i].work_data.work,
1665			  safexcel_dequeue_work);
1666
1667		snprintf(wq_name, 9, "wq_ring%d", i);
1668		priv->ring[i].workqueue =
1669			create_singlethread_workqueue(wq_name);
1670		if (!priv->ring[i].workqueue) {
1671			ret = -ENOMEM;
1672			goto err_cleanup_rings;
1673		}
1674
1675		priv->ring[i].requests = 0;
1676		priv->ring[i].busy = false;
1677
1678		crypto_init_queue(&priv->ring[i].queue,
1679				  EIP197_DEFAULT_RING_SIZE);
1680
1681		spin_lock_init(&priv->ring[i].lock);
1682		spin_lock_init(&priv->ring[i].queue_lock);
1683	}
1684
1685	atomic_set(&priv->ring_used, 0);
1686
1687	ret = safexcel_hw_init(priv);
1688	if (ret) {
1689		dev_err(dev, "HW init failed (%d)\n", ret);
1690		goto err_cleanup_rings;
1691	}
1692
1693	ret = safexcel_register_algorithms(priv);
1694	if (ret) {
1695		dev_err(dev, "Failed to register algorithms (%d)\n", ret);
1696		goto err_cleanup_rings;
1697	}
1698
1699	return 0;
1700
1701err_cleanup_rings:
1702	for (i = 0; i < priv->config.rings; i++) {
1703		if (priv->ring[i].irq)
1704			irq_set_affinity_hint(priv->ring[i].irq, NULL);
1705		if (priv->ring[i].workqueue)
1706			destroy_workqueue(priv->ring[i].workqueue);
1707	}
1708
1709	return ret;
1710}
1711
1712static void safexcel_hw_reset_rings(struct safexcel_crypto_priv *priv)
1713{
1714	int i;
1715
1716	for (i = 0; i < priv->config.rings; i++) {
1717		/* clear any pending interrupt */
1718		writel(GENMASK(5, 0), EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_STAT);
1719		writel(GENMASK(7, 0), EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_STAT);
1720
1721		/* Reset the CDR base address */
1722		writel(0, EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_LO);
1723		writel(0, EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_HI);
1724
1725		/* Reset the RDR base address */
1726		writel(0, EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_LO);
1727		writel(0, EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_RING_BASE_ADDR_HI);
1728	}
1729}
1730
1731/* for Device Tree platform driver */
1732
1733static int safexcel_probe(struct platform_device *pdev)
1734{
1735	struct device *dev = &pdev->dev;
1736	struct safexcel_crypto_priv *priv;
1737	int ret;
1738
1739	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1740	if (!priv)
1741		return -ENOMEM;
1742
1743	priv->dev = dev;
1744	priv->data = (struct safexcel_priv_data *)of_device_get_match_data(dev);
1745
1746	platform_set_drvdata(pdev, priv);
1747
1748	priv->base = devm_platform_ioremap_resource(pdev, 0);
1749	if (IS_ERR(priv->base)) {
1750		dev_err(dev, "failed to get resource\n");
1751		return PTR_ERR(priv->base);
1752	}
1753
1754	priv->clk = devm_clk_get(&pdev->dev, NULL);
1755	ret = PTR_ERR_OR_ZERO(priv->clk);
1756	/* The clock isn't mandatory */
1757	if  (ret != -ENOENT) {
1758		if (ret)
1759			return ret;
1760
1761		ret = clk_prepare_enable(priv->clk);
1762		if (ret) {
1763			dev_err(dev, "unable to enable clk (%d)\n", ret);
1764			return ret;
1765		}
1766	}
1767
1768	priv->reg_clk = devm_clk_get(&pdev->dev, "reg");
1769	ret = PTR_ERR_OR_ZERO(priv->reg_clk);
1770	/* The clock isn't mandatory */
1771	if  (ret != -ENOENT) {
1772		if (ret)
1773			goto err_core_clk;
1774
1775		ret = clk_prepare_enable(priv->reg_clk);
1776		if (ret) {
1777			dev_err(dev, "unable to enable reg clk (%d)\n", ret);
1778			goto err_core_clk;
1779		}
1780	}
1781
1782	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
1783	if (ret)
1784		goto err_reg_clk;
1785
1786	/* Generic EIP97/EIP197 device probing */
1787	ret = safexcel_probe_generic(pdev, priv, 0);
1788	if (ret)
1789		goto err_reg_clk;
1790
1791	return 0;
1792
1793err_reg_clk:
1794	clk_disable_unprepare(priv->reg_clk);
1795err_core_clk:
1796	clk_disable_unprepare(priv->clk);
1797	return ret;
1798}
1799
1800static void safexcel_remove(struct platform_device *pdev)
1801{
1802	struct safexcel_crypto_priv *priv = platform_get_drvdata(pdev);
1803	int i;
1804
1805	safexcel_unregister_algorithms(priv);
1806	safexcel_hw_reset_rings(priv);
1807
1808	clk_disable_unprepare(priv->reg_clk);
1809	clk_disable_unprepare(priv->clk);
1810
1811	for (i = 0; i < priv->config.rings; i++) {
1812		irq_set_affinity_hint(priv->ring[i].irq, NULL);
1813		destroy_workqueue(priv->ring[i].workqueue);
1814	}
1815}
1816
1817static const struct safexcel_priv_data eip97ies_mrvl_data = {
1818	.version = EIP97IES_MRVL,
1819};
1820
1821static const struct safexcel_priv_data eip197b_mrvl_data = {
1822	.version = EIP197B_MRVL,
1823};
1824
1825static const struct safexcel_priv_data eip197d_mrvl_data = {
1826	.version = EIP197D_MRVL,
1827};
1828
1829static const struct safexcel_priv_data eip197_devbrd_data = {
1830	.version = EIP197_DEVBRD,
1831};
1832
1833static const struct safexcel_priv_data eip197c_mxl_data = {
1834	.version = EIP197C_MXL,
1835	.fw_little_endian = true,
1836};
1837
1838static const struct of_device_id safexcel_of_match_table[] = {
1839	{
1840		.compatible = "inside-secure,safexcel-eip97ies",
1841		.data = &eip97ies_mrvl_data,
1842	},
1843	{
1844		.compatible = "inside-secure,safexcel-eip197b",
1845		.data = &eip197b_mrvl_data,
1846	},
1847	{
1848		.compatible = "inside-secure,safexcel-eip197d",
1849		.data = &eip197d_mrvl_data,
1850	},
1851	{
1852		.compatible = "inside-secure,safexcel-eip197c-mxl",
1853		.data = &eip197c_mxl_data,
1854	},
1855	/* For backward compatibility and intended for generic use */
1856	{
1857		.compatible = "inside-secure,safexcel-eip97",
1858		.data = &eip97ies_mrvl_data,
1859	},
1860	{
1861		.compatible = "inside-secure,safexcel-eip197",
1862		.data = &eip197b_mrvl_data,
1863	},
1864	{},
1865};
1866
1867MODULE_DEVICE_TABLE(of, safexcel_of_match_table);
1868
1869static struct platform_driver  crypto_safexcel = {
1870	.probe		= safexcel_probe,
1871	.remove_new	= safexcel_remove,
1872	.driver		= {
1873		.name	= "crypto-safexcel",
1874		.of_match_table = safexcel_of_match_table,
1875	},
1876};
1877
1878/* PCIE devices - i.e. Inside Secure development boards */
1879
1880static int safexcel_pci_probe(struct pci_dev *pdev,
1881			       const struct pci_device_id *ent)
1882{
1883	struct device *dev = &pdev->dev;
1884	struct safexcel_crypto_priv *priv;
1885	void __iomem *pciebase;
1886	int rc;
1887	u32 val;
1888
1889	dev_dbg(dev, "Probing PCIE device: vendor %04x, device %04x, subv %04x, subdev %04x, ctxt %lx\n",
1890		ent->vendor, ent->device, ent->subvendor,
1891		ent->subdevice, ent->driver_data);
1892
1893	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1894	if (!priv)
1895		return -ENOMEM;
1896
1897	priv->dev = dev;
1898	priv->data = (struct safexcel_priv_data *)ent->driver_data;
1899
1900	pci_set_drvdata(pdev, priv);
1901
1902	/* enable the device */
1903	rc = pcim_enable_device(pdev);
1904	if (rc) {
1905		dev_err(dev, "Failed to enable PCI device\n");
1906		return rc;
1907	}
1908
1909	/* take ownership of PCI BAR0 */
1910	rc = pcim_iomap_regions(pdev, 1, "crypto_safexcel");
1911	if (rc) {
1912		dev_err(dev, "Failed to map IO region for BAR0\n");
1913		return rc;
1914	}
1915	priv->base = pcim_iomap_table(pdev)[0];
1916
1917	if (priv->data->version == EIP197_DEVBRD) {
1918		dev_dbg(dev, "Device identified as FPGA based development board - applying HW reset\n");
1919
1920		rc = pcim_iomap_regions(pdev, 4, "crypto_safexcel");
1921		if (rc) {
1922			dev_err(dev, "Failed to map IO region for BAR4\n");
1923			return rc;
1924		}
1925
1926		pciebase = pcim_iomap_table(pdev)[2];
1927		val = readl(pciebase + EIP197_XLX_IRQ_BLOCK_ID_ADDR);
1928		if ((val >> 16) == EIP197_XLX_IRQ_BLOCK_ID_VALUE) {
1929			dev_dbg(dev, "Detected Xilinx PCIE IRQ block version %d, multiple MSI support enabled\n",
1930				(val & 0xff));
1931
1932			/* Setup MSI identity map mapping */
1933			writel(EIP197_XLX_USER_VECT_LUT0_IDENT,
1934			       pciebase + EIP197_XLX_USER_VECT_LUT0_ADDR);
1935			writel(EIP197_XLX_USER_VECT_LUT1_IDENT,
1936			       pciebase + EIP197_XLX_USER_VECT_LUT1_ADDR);
1937			writel(EIP197_XLX_USER_VECT_LUT2_IDENT,
1938			       pciebase + EIP197_XLX_USER_VECT_LUT2_ADDR);
1939			writel(EIP197_XLX_USER_VECT_LUT3_IDENT,
1940			       pciebase + EIP197_XLX_USER_VECT_LUT3_ADDR);
1941
1942			/* Enable all device interrupts */
1943			writel(GENMASK(31, 0),
1944			       pciebase + EIP197_XLX_USER_INT_ENB_MSK);
1945		} else {
1946			dev_err(dev, "Unrecognised IRQ block identifier %x\n",
1947				val);
1948			return -ENODEV;
1949		}
1950
1951		/* HW reset FPGA dev board */
1952		/* assert reset */
1953		writel(1, priv->base + EIP197_XLX_GPIO_BASE);
1954		wmb(); /* maintain strict ordering for accesses here */
1955		/* deassert reset */
1956		writel(0, priv->base + EIP197_XLX_GPIO_BASE);
1957		wmb(); /* maintain strict ordering for accesses here */
1958	}
1959
1960	/* enable bus mastering */
1961	pci_set_master(pdev);
1962
1963	/* Generic EIP97/EIP197 device probing */
1964	rc = safexcel_probe_generic(pdev, priv, 1);
1965	return rc;
1966}
1967
1968static void safexcel_pci_remove(struct pci_dev *pdev)
1969{
1970	struct safexcel_crypto_priv *priv = pci_get_drvdata(pdev);
1971	int i;
1972
1973	safexcel_unregister_algorithms(priv);
1974
1975	for (i = 0; i < priv->config.rings; i++)
1976		destroy_workqueue(priv->ring[i].workqueue);
1977
1978	safexcel_hw_reset_rings(priv);
1979}
1980
1981static const struct pci_device_id safexcel_pci_ids[] = {
1982	{
1983		PCI_DEVICE_SUB(PCI_VENDOR_ID_XILINX, 0x9038,
1984			       0x16ae, 0xc522),
1985		.driver_data = (kernel_ulong_t)&eip197_devbrd_data,
1986	},
1987	{},
1988};
1989
1990MODULE_DEVICE_TABLE(pci, safexcel_pci_ids);
1991
1992static struct pci_driver safexcel_pci_driver = {
1993	.name          = "crypto-safexcel",
1994	.id_table      = safexcel_pci_ids,
1995	.probe         = safexcel_pci_probe,
1996	.remove        = safexcel_pci_remove,
1997};
1998
1999static int __init safexcel_init(void)
2000{
2001	int ret;
2002
2003	/* Register PCI driver */
2004	ret = pci_register_driver(&safexcel_pci_driver);
2005
2006	/* Register platform driver */
2007	if (IS_ENABLED(CONFIG_OF) && !ret) {
2008		ret = platform_driver_register(&crypto_safexcel);
2009		if (ret)
2010			pci_unregister_driver(&safexcel_pci_driver);
2011	}
2012
2013	return ret;
2014}
2015
2016static void __exit safexcel_exit(void)
2017{
2018	/* Unregister platform driver */
2019	if (IS_ENABLED(CONFIG_OF))
2020		platform_driver_unregister(&crypto_safexcel);
2021
2022	/* Unregister PCI driver if successfully registered before */
2023	pci_unregister_driver(&safexcel_pci_driver);
2024}
2025
2026module_init(safexcel_init);
2027module_exit(safexcel_exit);
2028
2029MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
2030MODULE_AUTHOR("Ofer Heifetz <oferh@marvell.com>");
2031MODULE_AUTHOR("Igal Liberman <igall@marvell.com>");
2032MODULE_DESCRIPTION("Support for SafeXcel cryptographic engines: EIP97 & EIP197");
2033MODULE_LICENSE("GPL v2");
2034MODULE_IMPORT_NS(CRYPTO_INTERNAL);
2035
2036MODULE_FIRMWARE("ifpp.bin");
2037MODULE_FIRMWARE("ipue.bin");
2038MODULE_FIRMWARE("inside-secure/eip197b/ifpp.bin");
2039MODULE_FIRMWARE("inside-secure/eip197b/ipue.bin");
2040MODULE_FIRMWARE("inside-secure/eip197d/ifpp.bin");
2041MODULE_FIRMWARE("inside-secure/eip197d/ipue.bin");
2042MODULE_FIRMWARE("inside-secure/eip197_minifw/ifpp.bin");
2043MODULE_FIRMWARE("inside-secure/eip197_minifw/ipue.bin");