ctrl.c revision b061f3fefcffa0cdcdc61ae2a1123a4e7697d452
18e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips/* 28e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * CAAM control-plane driver backend 38e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * Controller-level driver, kernel property detection, initialization 48e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * 5281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips * Copyright 2008-2012 Freescale Semiconductor, Inc. 68e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 78e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 84776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi#include <linux/device.h> 95af5073004071cedd0343eee51d77955037ec6f3Rob Herring#include <linux/of_address.h> 105af5073004071cedd0343eee51d77955037ec6f3Rob Herring#include <linux/of_irq.h> 115af5073004071cedd0343eee51d77955037ec6f3Rob Herring 128e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "compat.h" 138e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "regs.h" 148e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "intern.h" 158e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#include "jr.h" 16281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips#include "desc_constr.h" 17281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips#include "error.h" 188e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 19281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips/* 20281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips * Descriptor to instantiate RNG State Handle 0 in normal mode and 21281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips * load the JDKEK, TDKEK and TDSK registers 22281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 231005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic void build_instantiation_desc(u32 *desc, int handle, int do_sk) 24281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips{ 251005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *jump_cmd, op_flags; 26281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 27281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips init_job_desc(desc, 0); 28281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 291005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu op_flags = OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | 301005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INIT; 311005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 32281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* INIT RNG in non-test mode */ 331005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu append_operation(desc, op_flags); 34281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 351005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (!handle && do_sk) { 361005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 371005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * For SH0, Secure Keys must be generated as well 381005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 39281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 401005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* wait for done */ 411005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1); 421005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu set_jump_tgt_here(desc, jump_cmd); 43281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 441005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 451005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * load 1 to clear written reg: 461005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * resets the done interrrupt and returns the RNG to idle. 471005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 481005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu append_load_imm_u32(desc, 1, LDST_SRCDST_WORD_CLRW); 491005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 501005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Initialize State Handle */ 511005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | 521005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu OP_ALG_AAI_RNG4_SK); 531005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 54281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 55d5e4e999cda51eaa62e662088579fcce0ac79e92Alex Porosanu append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT); 56281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 57281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 58b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu/* Descriptor for deinstantiation of State Handle 0 of the RNG block. */ 591005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic void build_deinstantiation_desc(u32 *desc, int handle) 60b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu{ 61b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu init_job_desc(desc, 0); 62281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 63b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu /* Uninstantiate State Handle 0 */ 64281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | 651005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INITFINAL); 66b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 67b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT); 68281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 69281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 7004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu/* 7104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * run_descriptor_deco0 - runs a descriptor on DECO0, under direct control of 7204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * the software (no JR/QI used). 7304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * @ctrldev - pointer to device 741005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @status - descriptor status, after being run 751005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * 7604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * Return: - 0 if no error occurred 7704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -ENODEV if the DECO couldn't be acquired 7804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -EAGAIN if an error occurred while executing the descriptor 7904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu */ 801005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc, 811005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *status) 82281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips{ 83997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 84997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta struct caam_full __iomem *topregs; 85997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta unsigned int timeout = 100000; 8604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu u32 deco_dbg_reg, flags; 87b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu int i; 88997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 89997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta /* Set the bit to request direct access to DECO0 */ 90997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta topregs = (struct caam_full __iomem *)ctrlpriv->ctrl; 9117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 928f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta if (ctrlpriv->virt_en == 1) { 9317157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta setbits32(&topregs->ctrl.deco_rsr, DECORSR_JR0); 9417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 958f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta while (!(rd_reg32(&topregs->ctrl.deco_rsr) & DECORSR_VALID) && 968f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta --timeout) 978f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta cpu_relax(); 988f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta 998f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta timeout = 100000; 1008f1da7b945b65513fb02b75ce25040c67ce32726Horia Geanta } 10117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 102997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta setbits32(&topregs->ctrl.deco_rq, DECORR_RQD0ENABLE); 103997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 104997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta while (!(rd_reg32(&topregs->ctrl.deco_rq) & DECORR_DEN0) && 105997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta --timeout) 106997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta cpu_relax(); 107997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 108997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta if (!timeout) { 109997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta dev_err(ctrldev, "failed to acquire DECO 0\n"); 11004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu clrbits32(&topregs->ctrl.deco_rq, DECORR_RQD0ENABLE); 11104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return -ENODEV; 112281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips } 113281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 114997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta for (i = 0; i < desc_len(desc); i++) 11504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu wr_reg32(&topregs->deco.descbuf[i], *(desc + i)); 116281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 11704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu flags = DECO_JQCR_WHL; 11804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* 11904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * If the descriptor length is longer than 4 words, then the 12004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * FOUR bit in JRCTRL register must be set. 12104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu */ 12204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu if (desc_len(desc) >= 4) 12304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu flags |= DECO_JQCR_FOUR; 12404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 12504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Instruct the DECO to execute it */ 12604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu wr_reg32(&topregs->deco.jr_ctl_hi, flags); 127997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 128997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta timeout = 10000000; 12984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu do { 13084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu deco_dbg_reg = rd_reg32(&topregs->deco.desc_dbg); 13184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* 13284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * If an error occured in the descriptor, then 13384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * the DECO status field will be set to 0x0D 13484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu */ 13584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu if ((deco_dbg_reg & DESC_DBG_DECO_STAT_MASK) == 13684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu DESC_DBG_DECO_STAT_HOST_ERR) 13784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu break; 138997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta cpu_relax(); 13984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu } while ((deco_dbg_reg & DESC_DBG_DECO_STAT_VALID) && --timeout); 140281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 1411005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu *status = rd_reg32(&topregs->deco.op_status_hi) & 1421005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu DECO_OP_STATUS_HI_ERR_MASK; 143997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta 14417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (ctrlpriv->virt_en == 1) 14517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta clrbits32(&topregs->ctrl.deco_rsr, DECORSR_JR0); 14617157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 14704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Mark the DECO as free */ 148997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta clrbits32(&topregs->ctrl.deco_rq, DECORR_RQD0ENABLE); 14904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 15004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu if (!timeout) 15104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return -EAGAIN; 15204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 15304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return 0; 15404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu} 15504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 15604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu/* 15704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * instantiate_rng - builds and executes a descriptor on DECO0, 15804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * which initializes the RNG block. 15904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * @ctrldev - pointer to device 1601005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @state_handle_mask - bitmask containing the instantiation status 1611005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * for the RNG4 state handles which exist in 1621005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the RNG4 block: 1 if it's been instantiated 1631005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * by an external entry, 0 otherwise. 1641005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @gen_sk - generate data to be loaded into the JDKEK, TDKEK and TDSK; 1651005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Caution: this can be done only once; if the keys need to be 1661005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * regenerated, a POR is required 1671005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * 16804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * Return: - 0 if no error occurred 16904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -ENOMEM if there isn't enough memory to allocate the descriptor 17004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -ENODEV if DECO0 couldn't be acquired 17104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * - -EAGAIN if an error occurred when executing the descriptor 17204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * f.i. there was a RNG hardware error due to not "good enough" 17304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu * entropy being aquired. 17404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu */ 1751005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic int instantiate_rng(struct device *ctrldev, int state_handle_mask, 1761005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int gen_sk) 17704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu{ 1781005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 1791005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu struct caam_full __iomem *topregs; 1801005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu struct rng4tst __iomem *r4tst; 1811005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *desc, status, rdsta_val; 1821005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int ret = 0, sh_idx; 1831005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 1841005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu topregs = (struct caam_full __iomem *)ctrlpriv->ctrl; 1851005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu r4tst = &topregs->ctrl.r4tst[0]; 18604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 18704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu desc = kmalloc(CAAM_CMD_SZ * 7, GFP_KERNEL); 18804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu if (!desc) 18904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu return -ENOMEM; 19004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 1911005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) { 1921005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 1931005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If the corresponding bit is set, this state handle 1941005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * was initialized by somebody else, so it's left alone. 1951005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 1961005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if ((1 << sh_idx) & state_handle_mask) 1971005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu continue; 1981005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 1991005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Create the descriptor for instantiating RNG State Handle */ 2001005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu build_instantiation_desc(desc, sh_idx, gen_sk); 2011005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2021005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Try to run it through DECO0 */ 2031005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = run_descriptor_deco0(ctrldev, desc, &status); 2041005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2051005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 2061005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If ret is not 0, or descriptor status is not 0, then 2071005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * something went wrong. No need to try the next state 2081005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * handle (if available), bail out here. 2091005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Also, if for some reason, the State Handle didn't get 2101005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * instantiated although the descriptor has finished 2111005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * without any error (HW optimizations for later 2121005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * CAAM eras), then try again. 2131005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 2141005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu rdsta_val = 2151005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu rd_reg32(&topregs->ctrl.r4tst[0].rdsta) & RDSTA_IFMASK; 2161005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (status || !(rdsta_val & (1 << sh_idx))) 2171005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = -EAGAIN; 2181005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (ret) 2191005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu break; 2201005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2211005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu dev_info(ctrldev, "Instantiated RNG4 SH%d\n", sh_idx); 2221005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Clear the contents before recreating the descriptor */ 2231005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu memset(desc, 0x00, CAAM_CMD_SZ * 7); 2241005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 22504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 226997ad2900ac13b8afcfc45ce79bf662551a501ebRuchika Gupta kfree(desc); 22704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 228281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips return ret; 229281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 230281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 231281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips/* 232b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * deinstantiate_rng - builds and executes a descriptor on DECO0, 233b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * which deinitializes the RNG block. 234b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * @ctrldev - pointer to device 2351005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * @state_handle_mask - bitmask containing the instantiation status 2361005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * for the RNG4 state handles which exist in 2371005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the RNG4 block: 1 if it's been instantiated 238b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * 239b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * Return: - 0 if no error occurred 240b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * - -ENOMEM if there isn't enough memory to allocate the descriptor 241b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * - -ENODEV if DECO0 couldn't be acquired 242b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu * - -EAGAIN if an error occurred when executing the descriptor 243281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 2441005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanustatic int deinstantiate_rng(struct device *ctrldev, int state_handle_mask) 245b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu{ 2461005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu u32 *desc, status; 2471005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int sh_idx, ret = 0; 248b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 249b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL); 250b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu if (!desc) 251b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu return -ENOMEM; 252b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 2531005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) { 2541005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 2551005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If the corresponding bit is set, then it means the state 2561005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * handle was initialized by us, and thus it needs to be 2571005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * deintialized as well 2581005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 2591005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if ((1 << sh_idx) & state_handle_mask) { 2601005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 2611005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Create the descriptor for deinstantating this state 2621005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * handle 2631005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 2641005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu build_deinstantiation_desc(desc, sh_idx); 2651005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2661005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* Try to run it through DECO0 */ 2671005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = run_descriptor_deco0(ctrldev, desc, &status); 2681005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu 2691005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (ret || status) { 2701005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu dev_err(ctrldev, 2711005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu "Failed to deinstantiate RNG4 SH%d\n", 2721005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu sh_idx); 2731005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu break; 2741005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 2751005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu dev_info(ctrldev, "Deinstantiated RNG4 SH%d\n", sh_idx); 2761005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 2771005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 278b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 279b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu kfree(desc); 280b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 281b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu return ret; 282b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu} 283b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 28404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanustatic int caam_remove(struct platform_device *pdev) 28504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu{ 28604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu struct device *ctrldev; 28704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu struct caam_drv_private *ctrlpriv; 28804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu struct caam_full __iomem *topregs; 28904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu int ring, ret = 0; 29004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 29104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu ctrldev = &pdev->dev; 29204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu ctrlpriv = dev_get_drvdata(ctrldev); 29304cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu topregs = (struct caam_full __iomem *)ctrlpriv->ctrl; 29404cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 295313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta /* Remove platform devices for JobRs */ 29604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu for (ring = 0; ring < ctrlpriv->total_jobrs; ring++) { 297313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta if (ctrlpriv->jrpdev[ring]) 298313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta of_device_unregister(ctrlpriv->jrpdev[ring]); 29904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu } 30004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 3011005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* De-initialize RNG state handles initialized by this driver. */ 3021005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (ctrlpriv->rng4_sh_init) 3031005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init); 304b1f996e0b3b00c98f0ac8ffef1a6572cbc735bbcAlex Porosanu 30504cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Shut down debug views */ 30604cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu#ifdef CONFIG_DEBUG_FS 30704cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu debugfs_remove_recursive(ctrlpriv->dfs_root); 30804cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu#endif 30904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 31004cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu /* Unmap controller region */ 31104cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu iounmap(&topregs->ctrl); 31204cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu 313281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips return ret; 314281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 315281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 316281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips/* 31784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * kick_trng - sets the various parameters for enabling the initialization 31884cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * of the RNG4 block in CAAM 31984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * @pdev - pointer to the platform device 32084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * @ent_delay - Defines the length (in system clocks) of each entropy sample. 321281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 32284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanustatic void kick_trng(struct platform_device *pdev, int ent_delay) 323281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips{ 324281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct device *ctrldev = &pdev->dev; 325281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); 326281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct caam_full __iomem *topregs; 327281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips struct rng4tst __iomem *r4tst; 328281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips u32 val; 329281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 330281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips topregs = (struct caam_full __iomem *)ctrlpriv->ctrl; 331281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips r4tst = &topregs->ctrl.r4tst[0]; 332281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 333281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* put RNG4 into program mode */ 334281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips setbits32(&r4tst->rtmctl, RTMCTL_PRGM); 33584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu 33684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* 33784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * Performance-wise, it does not make sense to 33884cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * set the delay to a value that is lower 33984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * than the last one that worked (i.e. the state handles 34084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * were instantiated properly. Thus, instead of wasting 34184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * time trying to set the values controlling the sample 34284cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * frequency, the function simply returns. 34384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu */ 34484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu val = (rd_reg32(&r4tst->rtsdctl) & RTSDCTL_ENT_DLY_MASK) 34584cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu >> RTSDCTL_ENT_DLY_SHIFT; 34684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu if (ent_delay <= val) { 34784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* put RNG4 into run mode */ 34884cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu clrbits32(&r4tst->rtmctl, RTMCTL_PRGM); 34984cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu return; 35084cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu } 35184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu 352281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips val = rd_reg32(&r4tst->rtsdctl); 35384cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu val = (val & ~RTSDCTL_ENT_DLY_MASK) | 35484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu (ent_delay << RTSDCTL_ENT_DLY_SHIFT); 355281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips wr_reg32(&r4tst->rtsdctl, val); 35684cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu /* min. freq. count, equal to 1/4 of the entropy sample length */ 35784cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2); 358b061f3fefcffa0cdcdc61ae2a1123a4e7697d452Alex Porosanu /* disable maximum frequency count */ 359b061f3fefcffa0cdcdc61ae2a1123a4e7697d452Alex Porosanu wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE); 360281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* put RNG4 into run mode */ 361281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips clrbits32(&r4tst->rtmctl, RTMCTL_PRGM); 362281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips} 363281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 36482c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu/** 36582c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu * caam_get_era() - Return the ERA of the SEC on SoC, based 366883619a931e9f54fca7495321b339669f11cc727Alex Porosanu * on "sec-era" propery in the DTS. This property is updated by u-boot. 36782c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu **/ 368883619a931e9f54fca7495321b339669f11cc727Alex Porosanuint caam_get_era(void) 36982c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu{ 370883619a931e9f54fca7495321b339669f11cc727Alex Porosanu struct device_node *caam_node; 371883619a931e9f54fca7495321b339669f11cc727Alex Porosanu for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") { 372883619a931e9f54fca7495321b339669f11cc727Alex Porosanu const uint32_t *prop = (uint32_t *)of_get_property(caam_node, 373883619a931e9f54fca7495321b339669f11cc727Alex Porosanu "fsl,sec-era", 374883619a931e9f54fca7495321b339669f11cc727Alex Porosanu NULL); 375883619a931e9f54fca7495321b339669f11cc727Alex Porosanu return prop ? *prop : -ENOTSUPP; 376883619a931e9f54fca7495321b339669f11cc727Alex Porosanu } 37782c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu 37882c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu return -ENOTSUPP; 37982c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu} 38082c2f9607b8a4667e9d89613478748f4e2b7288bAlex PorosanuEXPORT_SYMBOL(caam_get_era); 38182c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu 3828e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips/* Probe routine for CAAM top (controller) level */ 3832930d49768e5276da4fbed9d9cc1bd40ed25818eKim Phillipsstatic int caam_probe(struct platform_device *pdev) 3848e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips{ 3851005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int ret, ring, rspec, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN; 38682c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu u64 caam_id; 3878e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct device *dev; 3888e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct device_node *nprop, *np; 3898e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct caam_ctrl __iomem *ctrl; 3908e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct caam_full __iomem *topregs; 3918e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips struct caam_drv_private *ctrlpriv; 39223457bc9566be64f33afdc159aadd42712673e0bKim Phillips#ifdef CONFIG_DEBUG_FS 39323457bc9566be64f33afdc159aadd42712673e0bKim Phillips struct caam_perfmon *perfmon; 39423457bc9566be64f33afdc159aadd42712673e0bKim Phillips#endif 39517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta u32 scfgr, comp_params; 396eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta u32 cha_vid_ls; 3978e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 3984776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(struct caam_drv_private), 3994776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi GFP_KERNEL); 4008e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (!ctrlpriv) 4018e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 4028e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4038e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev = &pdev->dev; 4048e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_set_drvdata(dev, ctrlpriv); 4058e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->pdev = pdev; 4068e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips nprop = pdev->dev.of_node; 4078e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4088e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Get configuration properties from device tree */ 4098e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* First, get register page */ 4108e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrl = of_iomap(nprop, 0); 4118e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (ctrl == NULL) { 4128e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_err(dev, "caam: of_iomap() failed\n"); 4138e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 4148e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 4158e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctrl = (struct caam_ctrl __force *)ctrl; 4168e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4178e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* topregs used to derive pointers to CAAM sub-blocks only */ 4188e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips topregs = (struct caam_full __iomem *)ctrl; 4198e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4208e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Get the IRQ of the controller (for security violations only) */ 421f7578496a671a96e501f16a5104893275e32c33aThierry Reding ctrlpriv->secvio_irq = irq_of_parse_and_map(nprop, 0); 4228e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4238e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* 4248e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel, 425e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips * long pointers in master configuration register 4268e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 4278e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips setbits32(&topregs->ctrl.mcr, MCFGR_WDENABLE | 4288e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); 4298e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 43017157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta /* 43117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta * Read the Compile Time paramters and SCFGR to determine 43217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta * if Virtualization is enabled for this platform 43317157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta */ 43417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta comp_params = rd_reg32(&topregs->ctrl.perfmon.comp_parms_ms); 43517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta scfgr = rd_reg32(&topregs->ctrl.scfgr); 43617157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 43717157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta ctrlpriv->virt_en = 0; 43817157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (comp_params & CTPR_MS_VIRT_EN_INCL) { 43917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta /* VIRT_EN_INCL = 1 & VIRT_EN_POR = 1 or 44017157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta * VIRT_EN_INCL = 1 & VIRT_EN_POR = 0 & SCFGR_VIRT_EN = 1 44117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta */ 44217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if ((comp_params & CTPR_MS_VIRT_EN_POR) || 44317157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta (!(comp_params & CTPR_MS_VIRT_EN_POR) && 44417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta (scfgr & SCFGR_VIRT_EN))) 44517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta ctrlpriv->virt_en = 1; 44617157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta } else { 44717157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta /* VIRT_EN_INCL = 0 && VIRT_EN_POR_VALUE = 1 */ 44817157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (comp_params & CTPR_MS_VIRT_EN_POR) 44917157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta ctrlpriv->virt_en = 1; 45017157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta } 45117157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 45217157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta if (ctrlpriv->virt_en == 1) 45317157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta setbits32(&topregs->ctrl.jrstart, JRSTART_JR0_START | 45417157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta JRSTART_JR1_START | JRSTART_JR2_START | 45517157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta JRSTART_JR3_START); 45617157c90a8abf9323ee2a3daac7ad9f696642ddaRuchika Gupta 4578e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (sizeof(dma_addr_t) == sizeof(u64)) 458e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips if (of_device_is_compatible(nprop, "fsl,sec-v5.0")) 459a2ac287e9eaec1f105631fa847b1e9208d117a00Horia Geanta dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); 460e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips else 461a2ac287e9eaec1f105631fa847b1e9208d117a00Horia Geanta dma_set_mask_and_coherent(dev, DMA_BIT_MASK(36)); 462e13af18a3e33259e264c7fb47b54fbf608137976Kim Phillips else 463a2ac287e9eaec1f105631fa847b1e9208d117a00Horia Geanta dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); 4648e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4658e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* 4668e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * Detect and enable JobRs 4678e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * First, find out how many ring spec'ed, allocate references 4688e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * for all, then go probe each one. 4698e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 4708e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips rspec = 0; 4710a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal for_each_available_child_of_node(nprop, np) 4720a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") || 4730a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal of_device_is_compatible(np, "fsl,sec4.0-job-ring")) 474a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu rspec++; 475a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu 4764776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi ctrlpriv->jrpdev = devm_kzalloc(&pdev->dev, 4774776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi sizeof(struct platform_device *) * rspec, 4784776d381276ddbdec01381c4ae18150263d41cedHimangi Saraogi GFP_KERNEL); 479313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta if (ctrlpriv->jrpdev == NULL) { 4808e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips iounmap(&topregs->ctrl); 4818e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 4828e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 4838e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 4848e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ring = 0; 4858e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->total_jobrs = 0; 4860a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal for_each_available_child_of_node(nprop, np) 4870a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") || 4880a63b09dd6e321d4488347d6283685d08ee4bb7fNitesh Lal of_device_is_compatible(np, "fsl,sec4.0-job-ring")) { 489313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta ctrlpriv->jrpdev[ring] = 490313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta of_platform_device_create(np, NULL, dev); 491313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta if (!ctrlpriv->jrpdev[ring]) { 492313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta pr_warn("JR%d Platform device creation error\n", 493313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta ring); 494313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta continue; 495313ea293e9c4d1eabcaddd2c0800f083b03c2a2eRuchika Gupta } 496a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu ctrlpriv->total_jobrs++; 497a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu ring++; 498a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu } 4998e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5008e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Check to see if QI present. If so, enable */ 501eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta ctrlpriv->qi_present = 502eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta !!(rd_reg32(&topregs->ctrl.perfmon.comp_parms_ms) & 503eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta CTPR_MS_QI_MASK); 5048e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if (ctrlpriv->qi_present) { 5058e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->qi = (struct caam_queue_if __force *)&topregs->qi; 5068e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* This is all that's required to physically enable QI */ 5078e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips wr_reg32(&topregs->qi.qi_control_lo, QICTL_DQEN); 5088e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 5098e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5108e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* If no QI and no rings specified, quit and go home */ 5118e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) { 5128e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_err(dev, "no queues configured, terminating\n"); 5138e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips caam_remove(pdev); 5148e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return -ENOMEM; 5158e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips } 5168e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 517eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta cha_vid_ls = rd_reg32(&topregs->ctrl.perfmon.cha_id_ls); 518986dfbcf8b493928188f0e634068993bf2067ad7Ruchika Gupta 519281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips /* 520986dfbcf8b493928188f0e634068993bf2067ad7Ruchika Gupta * If SEC has RNG version >= 4 and RNG state handle has not been 52184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu * already instantiated, do RNG instantiation 522281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips */ 523eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta if ((cha_vid_ls & CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT >= 4) { 5241005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ctrlpriv->rng4_sh_init = 5251005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu rd_reg32(&topregs->ctrl.r4tst[0].rdsta); 5261005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5271005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If the secure keys (TDKEK, JDKEK, TDSK), were already 5281005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * generated, signal this to the function that is instantiating 5291005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the state handles. An error would occur if RNG4 attempts 5301005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * to regenerate these keys before the next POR. 5311005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5321005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu gen_sk = ctrlpriv->rng4_sh_init & RDSTA_SKVN ? 0 : 1; 5331005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ctrlpriv->rng4_sh_init &= RDSTA_IFMASK; 53484cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu do { 5351005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu int inst_handles = 5361005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu rd_reg32(&topregs->ctrl.r4tst[0].rdsta) & 5371005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu RDSTA_IFMASK; 5381005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5391005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * If either SH were instantiated by somebody else 5401005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * (e.g. u-boot) then it is assumed that the entropy 5411005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * parameters are properly set and thus the function 5421005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * setting these (kick_trng(...)) is skipped. 5431005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Also, if a handle was instantiated, do not change 5441005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the TRNG parameters. 5451005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5461005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu if (!(ctrlpriv->rng4_sh_init || inst_handles)) { 5471005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu kick_trng(pdev, ent_delay); 5481005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ent_delay += 400; 5491005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu } 5501005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5511005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * if instantiate_rng(...) fails, the loop will rerun 5521005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * and the kick_trng(...) function will modfiy the 5531005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * upper and lower limits of the entropy sampling 5541005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * interval, leading to a sucessful initialization of 5551005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * the RNG. 5561005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5571005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ret = instantiate_rng(dev, inst_handles, 5581005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu gen_sk); 55904cddbfe6b5f334aa337a1a9797eb8914822f2f8Alex Porosanu } while ((ret == -EAGAIN) && (ent_delay < RTSDCTL_ENT_DLY_MAX)); 560281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips if (ret) { 56184cf48278bc94dfc1b4ffafa987ae115abcc625aAlex Porosanu dev_err(dev, "failed to instantiate RNG"); 562281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips caam_remove(pdev); 563281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips return ret; 564281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips } 5651005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu /* 5661005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * Set handles init'ed by this module as the complement of the 5671005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu * already initialized ones 5681005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu */ 5691005bccd7a4a6345d995449b77cb1ba748ff9a28Alex Porosanu ctrlpriv->rng4_sh_init = ~ctrlpriv->rng4_sh_init & RDSTA_IFMASK; 570575c1bd549ff6bc097b3669b086e54e01169379fVakul Garg 571575c1bd549ff6bc097b3669b086e54e01169379fVakul Garg /* Enable RDB bit so that RNG works faster */ 572575c1bd549ff6bc097b3669b086e54e01169379fVakul Garg setbits32(&topregs->ctrl.scfgr, SCFGR_RDBENABLE); 573281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips } 574281922a1d4f59bdebbe78c1d9f4c50a967eb6cffKim Phillips 5758e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* NOTE: RTIC detection ought to go here, around Si time */ 5768e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 577eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta caam_id = (u64)rd_reg32(&topregs->ctrl.perfmon.caam_id_ms) << 32 | 578eb1139cd437afadc63f58159c111e3f166bddb51Ruchika Gupta (u64)rd_reg32(&topregs->ctrl.perfmon.caam_id_ls); 57982c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu 5808e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Report "alive" for developer to see */ 58182c2f9607b8a4667e9d89613478748f4e2b7288bAlex Porosanu dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id, 582883619a931e9f54fca7495321b339669f11cc727Alex Porosanu caam_get_era()); 5838e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips dev_info(dev, "job rings = %d, qi = %d\n", 5848e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->total_jobrs, ctrlpriv->qi_present); 5858e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5868e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#ifdef CONFIG_DEBUG_FS 5878e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* 5888e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * FIXME: needs better naming distinction, as some amalgamation of 5898e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * "caam" and nprop->full_name. The OF name isn't distinctive, 5908e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips * but does separate instances 5918e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips */ 5928e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips perfmon = (struct caam_perfmon __force *)&ctrl->perfmon; 5938e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 594178f827a60becdcff67df61cc9f0200fcce93f6cNitesh Narayan Lal ctrlpriv->dfs_root = debugfs_create_dir(dev_name(dev), NULL); 5958e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl = debugfs_create_dir("ctl", ctrlpriv->dfs_root); 5968e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 5978e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Controller-level - performance monitor counters */ 5988e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_rq_dequeued = 5998e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("rq_dequeued", 600eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6018e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->req_dequeued); 6028e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ob_enc_req = 6038e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ob_rq_encrypted", 604eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6058e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ob_enc_req); 6068e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ib_dec_req = 6078e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ib_rq_decrypted", 608eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6098e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ib_dec_req); 6108e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ob_enc_bytes = 6118e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ob_bytes_encrypted", 612eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6138e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ob_enc_bytes); 6148e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ob_prot_bytes = 6158e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ob_bytes_protected", 616eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6178e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ob_prot_bytes); 6188e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ib_dec_bytes = 6198e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ib_bytes_decrypted", 620eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6218e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ib_dec_bytes); 6228e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_ib_valid_bytes = 6238e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("ib_bytes_validated", 624eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6258e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->ib_valid_bytes); 6268e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6278e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Controller level - global status values */ 6288e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_faultaddr = 6298e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u64("fault_addr", 630eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6318e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->faultaddr); 6328e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_faultdetail = 6338e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u32("fault_detail", 634eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6358e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->faultdetail); 6368e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_faultstatus = 6378e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips debugfs_create_u32("fault_status", 638eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | S_IRGRP | S_IROTH, 6398e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, &perfmon->status); 6408e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6418e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips /* Internal covering keys (useful in non-secure mode only) */ 6428e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_kek_wrap.data = &ctrlpriv->ctrl->kek[0]; 6438e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32); 6448e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_kek = debugfs_create_blob("kek", 645eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | 6468e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips S_IRGRP | S_IROTH, 6478e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, 6488e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips &ctrlpriv->ctl_kek_wrap); 6498e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6508e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tkek_wrap.data = &ctrlpriv->ctrl->tkek[0]; 6518e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tkek_wrap.size = KEK_KEY_SIZE * sizeof(u32); 6528e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tkek = debugfs_create_blob("tkek", 653eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | 6548e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips S_IRGRP | S_IROTH, 6558e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, 6568e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips &ctrlpriv->ctl_tkek_wrap); 6578e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6588e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tdsk_wrap.data = &ctrlpriv->ctrl->tdsk[0]; 6598e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tdsk_wrap.size = KEK_KEY_SIZE * sizeof(u32); 6608e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl_tdsk = debugfs_create_blob("tdsk", 661eda65cc6ce2a45dc01c233e301e59cd7a0f763adAl Viro S_IRUSR | 6628e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips S_IRGRP | S_IROTH, 6638e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips ctrlpriv->ctl, 6648e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips &ctrlpriv->ctl_tdsk_wrap); 6658e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips#endif 6668e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips return 0; 6678e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips} 6688e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6698e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillipsstatic struct of_device_id caam_match[] = { 6708e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips { 67154e198d4c162b36ba864ecc658c829454074523fKim Phillips .compatible = "fsl,sec-v4.0", 6728e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips }, 673a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu { 674a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu .compatible = "fsl,sec4.0", 675a0ea0f6d17a6f14319069b039b7a9ebf54009678Shengzhou Liu }, 6768e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips {}, 6778e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips}; 6788e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_DEVICE_TABLE(of, caam_match); 6798e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6802930d49768e5276da4fbed9d9cc1bd40ed25818eKim Phillipsstatic struct platform_driver caam_driver = { 6818e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .driver = { 6828e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .name = "caam", 6838e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .owner = THIS_MODULE, 6848e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .of_match_table = caam_match, 6858e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips }, 6868e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips .probe = caam_probe, 68749cfe4db2ddc4d1b32f2bd4910a5a9d7a0e34ae8Greg Kroah-Hartman .remove = caam_remove, 6888e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips}; 6898e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 690741e8c2d8177eca656bc015ef83ab84d817edf8cAxel Linmodule_platform_driver(caam_driver); 6918e8ec596e6c0144e2dd500a57ee23dde9684df46Kim Phillips 6928e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_LICENSE("GPL"); 6938e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_DESCRIPTION("FSL CAAM request backend"); 6948e8ec596e6c0144e2dd500a57ee23dde9684df46Kim PhillipsMODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); 695