1fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal/* * CAAM control-plane driver backend 28e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * Controller-level driver, kernel property detection, initialization 38e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * 4281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips * Copyright 2008-2012 Freescale Semiconductor, Inc. 58e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 68e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 74776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi#include <linux/device.h> 85af5073004071cedd0343eee51d77955037ec6f3Rob Herring#include <linux/of_address.h> 95af5073004071cedd0343eee51d77955037ec6f3Rob Herring#include <linux/of_irq.h> 105af5073004071cedd0343eee51d77955037ec6f3Rob Herring 118e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "compat.h" 128e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "regs.h" 138e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "intern.h" 148e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "jr.h" 15281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips#include "desc_constr.h" 16281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips#include "error.h" 178e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 18281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips/* 19281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips * Descriptor to instantiate RNG State Handle 0 in normal mode and 20281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips * load the JDKEK, TDKEK and TDSK registers 21281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 221005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic void build_instantiation_desc(u32 *desc, int handle, int do_sk) 23281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips{ 241005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *jump_cmd, op_flags; 25281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 26281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips init_job_desc(desc, 0); 27281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 281005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu op_flags = OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | 291005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INIT; 301005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 31281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* INIT RNG in non-test mode */ 321005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu append_operation(desc, op_flags); 33281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 341005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (!handle && do_sk) { 351005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 361005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * For SH0, Secure Keys must be generated as well 371005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 38281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 391005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* wait for done */ 401005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1); 411005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu set_jump_tgt_here(desc, jump_cmd); 42281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 431005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 441005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * load 1 to clear written reg: 451005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * resets the done interrrupt and returns the RNG to idle. 461005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 471005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu append_load_imm_u32(desc, 1, LDST_SRCDST_WORD_CLRW); 481005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 491005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Initialize State Handle */ 501005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | 511005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu OP_ALG_AAI_RNG4_SK); 521005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 53281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 54d5e4e999cda51eaa62e662088579fcce0ac79e92Alex Porosanu append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT); 55281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 56281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 57b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu/* Descriptor for deinstantiation of State Handle 0 of the RNG block. */ 581005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic void build_deinstantiation_desc(u32 *desc, int handle) 59b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu{ 60b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu init_job_desc(desc, 0); 61281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 62b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu /* Uninstantiate State Handle 0 */ 63281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | 641005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INITFINAL); 65b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 66b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT); 67281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 68281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 6904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu/* 7004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * run_descriptor_deco0 - runs a descriptor on DECO0, under direct control of 7104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * the software (no JR/QI used). 7204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * @ctrldev - pointer to device 731005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @status - descriptor status, after being run 741005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * 7504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * Return: - 0 if no error occurred 7604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -ENODEV if the DECO couldn't be acquired 7704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -EAGAIN if an error occurred while executing the descriptor 7804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu */ 791005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc, 801005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *status) 81281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips{ 82997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 83fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal struct caam_ctrl __iomem *ctrl = ctrlpriv->ctrl; 84fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal struct caam_deco __iomem *deco = ctrlpriv->deco; 85997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta unsigned int timeout = 100000; 8604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu u32 deco_dbg_reg, flags; 87b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu int i; 88997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 8917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 908f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta if (ctrlpriv->virt_en == 1) { 91fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal setbits32(&ctrl->deco_rsr, DECORSR_JR0); 9217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 93fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal while (!(rd_reg32(&ctrl->deco_rsr) & DECORSR_VALID) && 948f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta --timeout) 958f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta cpu_relax(); 968f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta 978f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta timeout = 100000; 988f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta } 9917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 100fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal setbits32(&ctrl->deco_rq, DECORR_RQD0ENABLE); 101997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 102fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal while (!(rd_reg32(&ctrl->deco_rq) & DECORR_DEN0) && 103997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta --timeout) 104997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta cpu_relax(); 105997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 106997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta if (!timeout) { 107997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta dev_err(ctrldev, "failed to acquire DECO 0\n"); 108fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal clrbits32(&ctrl->deco_rq, DECORR_RQD0ENABLE); 10904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return -ENODEV; 110281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips } 111281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 112997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta for (i = 0; i < desc_len(desc); i++) 113fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal wr_reg32(&deco->descbuf[i], *(desc + i)); 114281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 11504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu flags = DECO_JQCR_WHL; 11604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* 11704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * If the descriptor length is longer than 4 words, then the 11804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * FOUR bit in JRCTRL register must be set. 11904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu */ 12004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu if (desc_len(desc) >= 4) 12104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu flags |= DECO_JQCR_FOUR; 12204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 12304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Instruct the DECO to execute it */ 124fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal wr_reg32(&deco->jr_ctl_hi, flags); 125997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 126997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta timeout = 10000000; 12784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu do { 128fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal deco_dbg_reg = rd_reg32(&deco->desc_dbg); 12984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* 13084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * If an error occured in the descriptor, then 13184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * the DECO status field will be set to 0x0D 13284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu */ 13384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu if ((deco_dbg_reg & DESC_DBG_DECO_STAT_MASK) == 13484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu DESC_DBG_DECO_STAT_HOST_ERR) 13584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu break; 136997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta cpu_relax(); 13784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu } while ((deco_dbg_reg & DESC_DBG_DECO_STAT_VALID) && --timeout); 138281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 139fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal *status = rd_reg32(&deco->op_status_hi) & 1401005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu DECO_OP_STATUS_HI_ERR_MASK; 141997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 14217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (ctrlpriv->virt_en == 1) 143fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal clrbits32(&ctrl->deco_rsr, DECORSR_JR0); 14417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 14504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Mark the DECO as free */ 146fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal clrbits32(&ctrl->deco_rq, DECORR_RQD0ENABLE); 14704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 14804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu if (!timeout) 14904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return -EAGAIN; 15004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 15104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return 0; 15204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu} 15304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 15404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu/* 15504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * instantiate_rng - builds and executes a descriptor on DECO0, 15604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * which initializes the RNG block. 15704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * @ctrldev - pointer to device 1581005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @state_handle_mask - bitmask containing the instantiation status 1591005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * for the RNG4 state handles which exist in 1601005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the RNG4 block: 1 if it's been instantiated 1611005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * by an external entry, 0 otherwise. 1621005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @gen_sk - generate data to be loaded into the JDKEK, TDKEK and TDSK; 1631005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Caution: this can be done only once; if the keys need to be 1641005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * regenerated, a POR is required 1651005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * 16604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * Return: - 0 if no error occurred 16704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -ENOMEM if there isn't enough memory to allocate the descriptor 16804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -ENODEV if DECO0 couldn't be acquired 16904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -EAGAIN if an error occurred when executing the descriptor 17004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * f.i. there was a RNG hardware error due to not "good enough" 17104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * entropy being aquired. 17204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu */ 1731005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic int instantiate_rng(struct device *ctrldev, int state_handle_mask, 1741005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int gen_sk) 17504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu{ 1761005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 177fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal struct caam_ctrl __iomem *ctrl; 1781005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu struct rng4tst __iomem *r4tst; 1791005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *desc, status, rdsta_val; 1801005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int ret = 0, sh_idx; 1811005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 182fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl; 183fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal r4tst = &ctrl->r4tst[0]; 18404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 18504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu desc = kmalloc(CAAM_CMD_SZ * 7, GFP_KERNEL); 18604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu if (!desc) 18704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return -ENOMEM; 18804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 1891005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) { 1901005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 1911005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If the corresponding bit is set, this state handle 1921005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * was initialized by somebody else, so it's left alone. 1931005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 1941005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if ((1 << sh_idx) & state_handle_mask) 1951005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu continue; 1961005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 1971005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Create the descriptor for instantiating RNG State Handle */ 1981005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu build_instantiation_desc(desc, sh_idx, gen_sk); 1991005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2001005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Try to run it through DECO0 */ 2011005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = run_descriptor_deco0(ctrldev, desc, &status); 2021005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2031005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 2041005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If ret is not 0, or descriptor status is not 0, then 2051005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * something went wrong. No need to try the next state 2061005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * handle (if available), bail out here. 2071005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Also, if for some reason, the State Handle didn't get 2081005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * instantiated although the descriptor has finished 2091005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * without any error (HW optimizations for later 2101005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * CAAM eras), then try again. 2111005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 2121005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu rdsta_val = 213fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal rd_reg32(&ctrl->r4tst[0].rdsta) & RDSTA_IFMASK; 2141005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (status || !(rdsta_val & (1 << sh_idx))) 2151005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = -EAGAIN; 2161005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (ret) 2171005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu break; 2181005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu dev_info(ctrldev, "Instantiated RNG4 SH%d\n", sh_idx); 2191005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Clear the contents before recreating the descriptor */ 2201005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu memset(desc, 0x00, CAAM_CMD_SZ * 7); 2211005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 22204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 223997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta kfree(desc); 22404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 225281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips return ret; 226281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 227281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 228281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips/* 229b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * deinstantiate_rng - builds and executes a descriptor on DECO0, 230b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * which deinitializes the RNG block. 231b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * @ctrldev - pointer to device 2321005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @state_handle_mask - bitmask containing the instantiation status 2331005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * for the RNG4 state handles which exist in 2341005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the RNG4 block: 1 if it's been instantiated 235b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * 236b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * Return: - 0 if no error occurred 237b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * - -ENOMEM if there isn't enough memory to allocate the descriptor 238b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * - -ENODEV if DECO0 couldn't be acquired 239b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * - -EAGAIN if an error occurred when executing the descriptor 240281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 2411005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic int deinstantiate_rng(struct device *ctrldev, int state_handle_mask) 242b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu{ 2431005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *desc, status; 2441005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int sh_idx, ret = 0; 245b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 246b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL); 247b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu if (!desc) 248b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu return -ENOMEM; 249b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 2501005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) { 2511005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 2521005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If the corresponding bit is set, then it means the state 2531005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * handle was initialized by us, and thus it needs to be 2541005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * deintialized as well 2551005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 2561005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if ((1 << sh_idx) & state_handle_mask) { 2571005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 2581005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Create the descriptor for deinstantating this state 2591005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * handle 2601005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 2611005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu build_deinstantiation_desc(desc, sh_idx); 2621005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2631005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Try to run it through DECO0 */ 2641005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = run_descriptor_deco0(ctrldev, desc, &status); 2651005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2661005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (ret || status) { 2671005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu dev_err(ctrldev, 2681005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu "Failed to deinstantiate RNG4 SH%d\n", 2691005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu sh_idx); 2701005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu break; 2711005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 2721005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu dev_info(ctrldev, "Deinstantiated RNG4 SH%d\n", sh_idx); 2731005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 2741005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 275b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 276b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu kfree(desc); 277b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 278b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu return ret; 279b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu} 280b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 28104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanustatic int caam_remove(struct platform_device *pdev) 28204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu{ 28304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu struct device *ctrldev; 28404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu struct caam_drv_private *ctrlpriv; 285fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal struct caam_ctrl __iomem *ctrl; 28604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu int ring, ret = 0; 28704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 28804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu ctrldev = &pdev->dev; 28904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu ctrlpriv = dev_get_drvdata(ctrldev); 290fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl; 29104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 292313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta /* Remove platform devices for JobRs */ 29304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu for (ring = 0; ring < ctrlpriv->total_jobrs; ring++) { 294313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta if (ctrlpriv->jrpdev[ring]) 295313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta of_device_unregister(ctrlpriv->jrpdev[ring]); 29604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu } 29704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 2981005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* De-initialize RNG state handles initialized by this driver. */ 2991005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (ctrlpriv->rng4_sh_init) 3001005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init); 301b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 30204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Shut down debug views */ 30304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu#ifdef CONFIG_DEBUG_FS 30404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu debugfs_remove_recursive(ctrlpriv->dfs_root); 30504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu#endif 30604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 30704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Unmap controller region */ 308fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal iounmap(&ctrl); 30904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 310281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips return ret; 311281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 312281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 313281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips/* 31484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * kick_trng - sets the various parameters for enabling the initialization 31584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * of the RNG4 block in CAAM 31684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * @pdev - pointer to the platform device 31784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * @ent_delay - Defines the length (in system clocks) of each entropy sample. 318281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 31984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanustatic void kick_trng(struct platform_device *pdev, int ent_delay) 320281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips{ 321281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct device *ctrldev = &pdev->dev; 322281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 323fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal struct caam_ctrl __iomem *ctrl; 324281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct rng4tst __iomem *r4tst; 325281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips u32 val; 326281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 327fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl; 328fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal r4tst = &ctrl->r4tst[0]; 329281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 330281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* put RNG4 into program mode */ 331281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips setbits32(&r4tst->rtmctl, RTMCTL_PRGM); 33284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu 33384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* 33484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * Performance-wise, it does not make sense to 33584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * set the delay to a value that is lower 33684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * than the last one that worked (i.e. the state handles 33784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * were instantiated properly. Thus, instead of wasting 33884cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * time trying to set the values controlling the sample 33984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * frequency, the function simply returns. 34084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu */ 34184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu val = (rd_reg32(&r4tst->rtsdctl) & RTSDCTL_ENT_DLY_MASK) 34284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu >> RTSDCTL_ENT_DLY_SHIFT; 34384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu if (ent_delay <= val) { 34484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* put RNG4 into run mode */ 34584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu clrbits32(&r4tst->rtmctl, RTMCTL_PRGM); 34684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu return; 34784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu } 34884cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu 349281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips val = rd_reg32(&r4tst->rtsdctl); 35084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu val = (val & ~RTSDCTL_ENT_DLY_MASK) | 35184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu (ent_delay << RTSDCTL_ENT_DLY_SHIFT); 352281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips wr_reg32(&r4tst->rtsdctl, val); 35384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* min. freq. count, equal to 1/4 of the entropy sample length */ 35484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2); 355b061f3fefcffa0cdcdc61ae2a1123a4e7697d452Alex Porosanu /* disable maximum frequency count */ 356b061f3fefcffa0cdcdc61ae2a1123a4e7697d452Alex Porosanu wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE); 357e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu /* read the control register */ 358e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu val = rd_reg32(&r4tst->rtmctl); 359e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu /* 360e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu * select raw sampling in both entropy shifter 361e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu * and statistical checker 362e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu */ 363e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu setbits32(&val, RTMCTL_SAMP_MODE_RAW_ES_SC); 364281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* put RNG4 into run mode */ 365e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu clrbits32(&val, RTMCTL_PRGM); 366e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu /* write back the control register */ 367e5ffbfc182bc148f44840bdd3970ea4c8bf80c3cAlex Porosanu wr_reg32(&r4tst->rtmctl, val); 368281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 369281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 37082c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu/** 37182c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu * caam_get_era() - Return the ERA of the SEC on SoC, based 372883619a931e9f54fca7495321b339669f11cc727Alex Porosanu * on "sec-era" propery in the DTS. This property is updated by u-boot. 37382c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu **/ 374883619a931e9f54fca7495321b339669f11cc727Alex Porosanuint caam_get_era(void) 37582c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu{ 376883619a931e9f54fca7495321b339669f11cc727Alex Porosanu struct device_node *caam_node; 377883619a931e9f54fca7495321b339669f11cc727Alex Porosanu for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") { 378883619a931e9f54fca7495321b339669f11cc727Alex Porosanu const uint32_t *prop = (uint32_t *)of_get_property(caam_node, 379883619a931e9f54fca7495321b339669f11cc727Alex Porosanu "fsl,sec-era", 380883619a931e9f54fca7495321b339669f11cc727Alex Porosanu NULL); 381883619a931e9f54fca7495321b339669f11cc727Alex Porosanu return prop ? *prop : -ENOTSUPP; 382883619a931e9f54fca7495321b339669f11cc727Alex Porosanu } 38382c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu 38482c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu return -ENOTSUPP; 38582c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu} 38682c2f9607b8a4667e9d89613478748f4e2b7288bAlex PorosanuEXPORT_SYMBOL(caam_get_era); 38782c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu 3888e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips/* Probe routine for CAAM top (controller) level */ 3892930d49768e5276da4fbed9d9cc1bd40ed25818eKim Phillipsstatic int caam_probe(struct platform_device *pdev) 3908e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips{ 3911005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int ret, ring, rspec, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN; 39282c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu u64 caam_id; 3938e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct device *dev; 3948e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct device_node *nprop, *np; 3958e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct caam_ctrl __iomem *ctrl; 3968e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct caam_drv_private *ctrlpriv; 39723457bc9566be64f33afdc159aadd42712673e0bKim Phillips#ifdef CONFIG_DEBUG_FS 39823457bc9566be64f33afdc159aadd42712673e0bKim Phillips struct caam_perfmon *perfmon; 39923457bc9566be64f33afdc159aadd42712673e0bKim Phillips#endif 40017157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta u32 scfgr, comp_params; 401eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta u32 cha_vid_ls; 402fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal int pg_size; 403fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal int BLOCK_OFFSET = 0; 4048e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4054776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(struct caam_drv_private), 4064776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi GFP_KERNEL); 4078e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (!ctrlpriv) 4088e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 4098e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4108e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev = &pdev->dev; 4118e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_set_drvdata(dev, ctrlpriv); 4128e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->pdev = pdev; 4138e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips nprop = pdev->dev.of_node; 4148e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4158e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Get configuration properties from device tree */ 4168e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* First, get register page */ 4178e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrl = of_iomap(nprop, 0); 4188e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (ctrl == NULL) { 4198e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_err(dev, "caam: of_iomap() failed\n"); 4208e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 4218e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 422fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal /* Finding the page size for using the CTPR_MS register */ 423fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal comp_params = rd_reg32(&ctrl->perfmon.comp_parms_ms); 424fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal pg_size = (comp_params & CTPR_MS_PG_SZ_MASK) >> CTPR_MS_PG_SZ_SHIFT; 4258e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 426fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal /* Allocating the BLOCK_OFFSET based on the supported page size on 427fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal * the platform 428fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal */ 429fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal if (pg_size == 0) 430fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal BLOCK_OFFSET = PG_SIZE_4K; 431fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal else 432fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal BLOCK_OFFSET = PG_SIZE_64K; 433fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal 434fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrlpriv->ctrl = (struct caam_ctrl __force *)ctrl; 435fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrlpriv->assure = (struct caam_assurance __force *) 436fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ((uint8_t *)ctrl + 437fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal BLOCK_OFFSET * ASSURE_BLOCK_NUMBER 438fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ); 439fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrlpriv->deco = (struct caam_deco __force *) 440fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ((uint8_t *)ctrl + 441fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal BLOCK_OFFSET * DECO_BLOCK_NUMBER 442fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ); 4438e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4448e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Get the IRQ of the controller (for security violations only) */ 445f7578496a671a96e501f16a5104893275e32c33aThierry Reding ctrlpriv->secvio_irq = irq_of_parse_and_map(nprop, 0); 4468e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4478e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* 4488e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel, 449e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips * long pointers in master configuration register 4508e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 451fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal setbits32(&ctrl->mcr, MCFGR_WDENABLE | 4528e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); 4538e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 45417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta /* 45517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta * Read the Compile Time paramters and SCFGR to determine 45617157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta * if Virtualization is enabled for this platform 45717157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta */ 458fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal scfgr = rd_reg32(&ctrl->scfgr); 45917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 46017157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta ctrlpriv->virt_en = 0; 46117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (comp_params & CTPR_MS_VIRT_EN_INCL) { 46217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta /* VIRT_EN_INCL = 1 & VIRT_EN_POR = 1 or 46317157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta * VIRT_EN_INCL = 1 & VIRT_EN_POR = 0 & SCFGR_VIRT_EN = 1 46417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta */ 46517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if ((comp_params & CTPR_MS_VIRT_EN_POR) || 46617157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta (!(comp_params & CTPR_MS_VIRT_EN_POR) && 46717157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta (scfgr & SCFGR_VIRT_EN))) 46817157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta ctrlpriv->virt_en = 1; 46917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta } else { 47017157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta /* VIRT_EN_INCL = 0 && VIRT_EN_POR_VALUE = 1 */ 47117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (comp_params & CTPR_MS_VIRT_EN_POR) 47217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta ctrlpriv->virt_en = 1; 47317157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta } 47417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 47517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (ctrlpriv->virt_en == 1) 476fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal setbits32(&ctrl->jrstart, JRSTART_JR0_START | 47717157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta JRSTART_JR1_START | JRSTART_JR2_START | 47817157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta JRSTART_JR3_START); 47917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 4808e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (sizeof(dma_addr_t) == sizeof(u64)) 481e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips if (of_device_is_compatible(nprop, "fsl,sec-v5.0")) 482a2ac287e9eaec1f105631fa847b1e9208d117a00Horia Geanta dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); 483e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips else 484a2ac287e9eaec1f105631fa847b1e9208d117a00Horia Geanta dma_set_mask_and_coherent(dev, DMA_BIT_MASK(36)); 485e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips else 486a2ac287e9eaec1f105631fa847b1e9208d117a00Horia Geanta dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); 4878e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4888e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* 4898e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * Detect and enable JobRs 4908e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * First, find out how many ring spec'ed, allocate references 4918e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * for all, then go probe each one. 4928e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 4938e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips rspec = 0; 4940a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal for_each_available_child_of_node(nprop, np) 4950a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") || 4960a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal of_device_is_compatible(np, "fsl,sec4.0-job-ring")) 497a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu rspec++; 498a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu 4994776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi ctrlpriv->jrpdev = devm_kzalloc(&pdev->dev, 5004776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi sizeof(struct platform_device *) * rspec, 5014776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi GFP_KERNEL); 502313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta if (ctrlpriv->jrpdev == NULL) { 503fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal iounmap(&ctrl); 5048e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 5058e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 5068e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5078e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ring = 0; 5088e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->total_jobrs = 0; 5090a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal for_each_available_child_of_node(nprop, np) 5100a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") || 5110a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal of_device_is_compatible(np, "fsl,sec4.0-job-ring")) { 512313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta ctrlpriv->jrpdev[ring] = 513313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta of_platform_device_create(np, NULL, dev); 514313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta if (!ctrlpriv->jrpdev[ring]) { 515313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta pr_warn("JR%d Platform device creation error\n", 516313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta ring); 517313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta continue; 518313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta } 519fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrlpriv->jr[ring] = (struct caam_job_ring __force *) 520fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ((uint8_t *)ctrl + 521fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal (ring + JR_BLOCK_NUMBER) * 522fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal BLOCK_OFFSET 523fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ); 524a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu ctrlpriv->total_jobrs++; 525a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu ring++; 526fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal } 5278e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5288e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Check to see if QI present. If so, enable */ 529eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta ctrlpriv->qi_present = 530fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal !!(rd_reg32(&ctrl->perfmon.comp_parms_ms) & 531eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta CTPR_MS_QI_MASK); 5328e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (ctrlpriv->qi_present) { 533fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ctrlpriv->qi = (struct caam_queue_if __force *) 534fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ((uint8_t *)ctrl + 535fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal BLOCK_OFFSET * QI_BLOCK_NUMBER 536fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal ); 5378e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* This is all that's required to physically enable QI */ 538fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal wr_reg32(&ctrlpriv->qi->qi_control_lo, QICTL_DQEN); 5398e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 5408e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5418e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* If no QI and no rings specified, quit and go home */ 5428e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) { 5438e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_err(dev, "no queues configured, terminating\n"); 5448e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips caam_remove(pdev); 5458e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 5468e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 5478e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 548fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal cha_vid_ls = rd_reg32(&ctrl->perfmon.cha_id_ls); 549986dfbcf8b493928188f0e634068993bf2067ad7Ruchika Gupta 550281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* 551986dfbcf8b493928188f0e634068993bf2067ad7Ruchika Gupta * If SEC has RNG version >= 4 and RNG state handle has not been 55284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * already instantiated, do RNG instantiation 553281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 554eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta if ((cha_vid_ls & CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT >= 4) { 5551005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ctrlpriv->rng4_sh_init = 556fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal rd_reg32(&ctrl->r4tst[0].rdsta); 5571005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5581005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If the secure keys (TDKEK, JDKEK, TDSK), were already 5591005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * generated, signal this to the function that is instantiating 5601005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the state handles. An error would occur if RNG4 attempts 5611005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * to regenerate these keys before the next POR. 5621005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5631005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu gen_sk = ctrlpriv->rng4_sh_init & RDSTA_SKVN ? 0 : 1; 5641005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ctrlpriv->rng4_sh_init &= RDSTA_IFMASK; 56584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu do { 5661005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int inst_handles = 567fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal rd_reg32(&ctrl->r4tst[0].rdsta) & 5681005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu RDSTA_IFMASK; 5691005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5701005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If either SH were instantiated by somebody else 5711005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * (e.g. u-boot) then it is assumed that the entropy 5721005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * parameters are properly set and thus the function 5731005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * setting these (kick_trng(...)) is skipped. 5741005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Also, if a handle was instantiated, do not change 5751005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the TRNG parameters. 5761005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5771005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (!(ctrlpriv->rng4_sh_init || inst_handles)) { 578eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu dev_info(dev, 579eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu "Entropy delay = %u\n", 580eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu ent_delay); 5811005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu kick_trng(pdev, ent_delay); 5821005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ent_delay += 400; 5831005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 5841005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5851005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * if instantiate_rng(...) fails, the loop will rerun 5861005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * and the kick_trng(...) function will modfiy the 5871005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * upper and lower limits of the entropy sampling 5881005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * interval, leading to a sucessful initialization of 5891005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the RNG. 5901005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5911005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = instantiate_rng(dev, inst_handles, 5921005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu gen_sk); 593eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu if (ret == -EAGAIN) 594eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu /* 595eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu * if here, the loop will rerun, 596eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu * so don't hog the CPU 597eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu */ 598eeaa1724a2e9c8958a8621b3c10d5ca0667e78faAlex Porosanu cpu_relax(); 59904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu } while ((ret == -EAGAIN) && (ent_delay < RTSDCTL_ENT_DLY_MAX)); 600281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips if (ret) { 60184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu dev_err(dev, "failed to instantiate RNG"); 602281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips caam_remove(pdev); 603281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips return ret; 604281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips } 6051005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 6061005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Set handles init'ed by this module as the complement of the 6071005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * already initialized ones 6081005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 6091005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ctrlpriv->rng4_sh_init = ~ctrlpriv->rng4_sh_init & RDSTA_IFMASK; 610575c1bd549ff6bc097b3669b086e54e01169379fVakul Garg 611575c1bd549ff6bc097b3669b086e54e01169379fVakul Garg /* Enable RDB bit so that RNG works faster */ 612fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal setbits32(&ctrl->scfgr, SCFGR_RDBENABLE); 613281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips } 614281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 6158e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* NOTE: RTIC detection ought to go here, around Si time */ 6168e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 617fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal caam_id = (u64)rd_reg32(&ctrl->perfmon.caam_id_ms) << 32 | 618fb4562b20894444288152e6de67c28adac6c789dNitesh Narayan Lal (u64)rd_reg32(&ctrl->perfmon.caam_id_ls); 61982c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu 6208e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Report "alive" for developer to see */ 62182c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id, 622883619a931e9f54fca7495321b339669f11cc727Alex Porosanu caam_get_era()); 6238e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_info(dev, "job rings = %d, qi = %d\n", 6248e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->total_jobrs, ctrlpriv->qi_present); 6258e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6268e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#ifdef CONFIG_DEBUG_FS 6278e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* 6288e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * FIXME: needs better naming distinction, as some amalgamation of 6298e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * "caam" and nprop->full_name. The OF name isn't distinctive, 6308e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * but does separate instances 6318e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 6328e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips perfmon = (struct caam_perfmon __force *)&ctrl->perfmon; 6338e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 634178f827a60becdcff67df61cc9f0200fcce93f6cNitesh Narayan Lal ctrlpriv->dfs_root = debugfs_create_dir(dev_name(dev), NULL); 6358e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl = debugfs_create_dir("ctl", ctrlpriv->dfs_root); 6368e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6378e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Controller-level - performance monitor counters */ 6388e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_rq_dequeued = 6398e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("rq_dequeued", 640eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6418e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->req_dequeued); 6428e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ob_enc_req = 6438e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ob_rq_encrypted", 644eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6458e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ob_enc_req); 6468e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ib_dec_req = 6478e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ib_rq_decrypted", 648eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6498e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ib_dec_req); 6508e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ob_enc_bytes = 6518e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ob_bytes_encrypted", 652eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6538e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ob_enc_bytes); 6548e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ob_prot_bytes = 6558e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ob_bytes_protected", 656eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6578e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ob_prot_bytes); 6588e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ib_dec_bytes = 6598e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ib_bytes_decrypted", 660eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6618e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ib_dec_bytes); 6628e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ib_valid_bytes = 6638e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ib_bytes_validated", 664eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6658e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ib_valid_bytes); 6668e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6678e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Controller level - global status values */ 6688e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_faultaddr = 6698e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("fault_addr", 670eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6718e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->faultaddr); 6728e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_faultdetail = 6738e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u32("fault_detail", 674eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6758e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->faultdetail); 6768e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_faultstatus = 6778e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u32("fault_status", 678eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6798e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->status); 6808e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6818e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Internal covering keys (useful in non-secure mode only) */ 6828e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_kek_wrap.data = &ctrlpriv->ctrl->kek[0]; 6838e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32); 6848e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_kek = debugfs_create_blob("kek", 685eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | 6868e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips S_IRGRP | S_IROTH, 6878e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, 6888e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips &ctrlpriv->ctl_kek_wrap); 6898e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6908e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tkek_wrap.data = &ctrlpriv->ctrl->tkek[0]; 6918e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tkek_wrap.size = KEK_KEY_SIZE * sizeof(u32); 6928e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tkek = debugfs_create_blob("tkek", 693eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | 6948e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips S_IRGRP | S_IROTH, 6958e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, 6968e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips &ctrlpriv->ctl_tkek_wrap); 6978e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6988e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tdsk_wrap.data = &ctrlpriv->ctrl->tdsk[0]; 6998e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tdsk_wrap.size = KEK_KEY_SIZE * sizeof(u32); 7008e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tdsk = debugfs_create_blob("tdsk", 701eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | 7028e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips S_IRGRP | S_IROTH, 7038e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, 7048e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips &ctrlpriv->ctl_tdsk_wrap); 7058e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#endif 7068e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return 0; 7078e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips} 7088e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 7098e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillipsstatic struct of_device_id caam_match[] = { 7108e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips { 71154e198d4c162b36ba864ecc658c829454074523fKim Phillips .compatible = "fsl,sec-v4.0", 7128e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips }, 713a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu { 714a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu .compatible = "fsl,sec4.0", 715a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu }, 7168e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips {}, 7178e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips}; 7188e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_DEVICE_TABLE(of, caam_match); 7198e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 7202930d49768e5276da4fbed9d9cc1bd40ed25818eKim Phillipsstatic struct platform_driver caam_driver = { 7218e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .driver = { 7228e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .name = "caam", 7238e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .owner = THIS_MODULE, 7248e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .of_match_table = caam_match, 7258e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips }, 7268e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .probe = caam_probe, 72749cfe4db2ddc4d1b32f2bd4910a5a9d7a0e34ae8Greg Kroah-Hartman .remove = caam_remove, 7288e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips}; 7298e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 730741e8c2d8177eca656bc015ef83ab84d817edf8cAxel Linmodule_platform_driver(caam_driver); 7318e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 7328e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_LICENSE("GPL"); 7338e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_DESCRIPTION("FSL CAAM request backend"); 7348e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); 735