Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 1 | /* * CAAM control-plane driver backend |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 2 | * Controller-level driver, kernel property detection, initialization |
| 3 | * |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 4 | * Copyright 2008-2012 Freescale Semiconductor, Inc. |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 5 | */ |
| 6 | |
Himangi Saraogi | 4776d38 | 2014-05-27 23:55:48 +0530 | [diff] [blame] | 7 | #include <linux/device.h> |
Rob Herring | 5af5073 | 2013-09-17 14:28:33 -0500 | [diff] [blame] | 8 | #include <linux/of_address.h> |
| 9 | #include <linux/of_irq.h> |
| 10 | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 11 | #include "compat.h" |
| 12 | #include "regs.h" |
| 13 | #include "intern.h" |
| 14 | #include "jr.h" |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 15 | #include "desc_constr.h" |
Baoyou Xie | 1ac6b73 | 2016-08-26 17:56:24 +0800 | [diff] [blame] | 16 | #include "ctrl.h" |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 17 | |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 18 | bool caam_little_end; |
| 19 | EXPORT_SYMBOL(caam_little_end); |
| 20 | |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 21 | /* |
Horia Geant? | 6c3af95 | 2015-08-17 15:24:10 +0300 | [diff] [blame] | 22 | * i.MX targets tend to have clock control subsystems that can |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 23 | * enable/disable clocking to our device. |
| 24 | */ |
Horia Geant? | 6c3af95 | 2015-08-17 15:24:10 +0300 | [diff] [blame] | 25 | #ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_IMX |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 26 | static inline struct clk *caam_drv_identify_clk(struct device *dev, |
| 27 | char *clk_name) |
| 28 | { |
| 29 | return devm_clk_get(dev, clk_name); |
| 30 | } |
| 31 | #else |
| 32 | static inline struct clk *caam_drv_identify_clk(struct device *dev, |
| 33 | char *clk_name) |
| 34 | { |
| 35 | return NULL; |
| 36 | } |
| 37 | #endif |
| 38 | |
| 39 | /* |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 40 | * Descriptor to instantiate RNG State Handle 0 in normal mode and |
| 41 | * load the JDKEK, TDKEK and TDSK registers |
| 42 | */ |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 43 | static void build_instantiation_desc(u32 *desc, int handle, int do_sk) |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 44 | { |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 45 | u32 *jump_cmd, op_flags; |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 46 | |
| 47 | init_job_desc(desc, 0); |
| 48 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 49 | op_flags = OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | |
| 50 | (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INIT; |
| 51 | |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 52 | /* INIT RNG in non-test mode */ |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 53 | append_operation(desc, op_flags); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 54 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 55 | if (!handle && do_sk) { |
| 56 | /* |
| 57 | * For SH0, Secure Keys must be generated as well |
| 58 | */ |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 59 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 60 | /* wait for done */ |
| 61 | jump_cmd = append_jump(desc, JUMP_CLASS_CLASS1); |
| 62 | set_jump_tgt_here(desc, jump_cmd); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 63 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 64 | /* |
| 65 | * load 1 to clear written reg: |
| 66 | * resets the done interrrupt and returns the RNG to idle. |
| 67 | */ |
| 68 | append_load_imm_u32(desc, 1, LDST_SRCDST_WORD_CLRW); |
| 69 | |
| 70 | /* Initialize State Handle */ |
| 71 | append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | |
| 72 | OP_ALG_AAI_RNG4_SK); |
| 73 | } |
Alex Porosanu | d5e4e99 | 2013-09-09 18:56:28 +0300 | [diff] [blame] | 74 | |
| 75 | append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 76 | } |
| 77 | |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 78 | /* Descriptor for deinstantiation of State Handle 0 of the RNG block. */ |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 79 | static void build_deinstantiation_desc(u32 *desc, int handle) |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 80 | { |
| 81 | init_job_desc(desc, 0); |
| 82 | |
| 83 | /* Uninstantiate State Handle 0 */ |
| 84 | append_operation(desc, OP_TYPE_CLASS1_ALG | OP_ALG_ALGSEL_RNG | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 85 | (handle << OP_ALG_AAI_SHIFT) | OP_ALG_AS_INITFINAL); |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 86 | |
| 87 | append_jump(desc, JUMP_CLASS_CLASS1 | JUMP_TYPE_HALT); |
| 88 | } |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 89 | |
| 90 | /* |
| 91 | * run_descriptor_deco0 - runs a descriptor on DECO0, under direct control of |
| 92 | * the software (no JR/QI used). |
| 93 | * @ctrldev - pointer to device |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 94 | * @status - descriptor status, after being run |
| 95 | * |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 96 | * Return: - 0 if no error occurred |
| 97 | * - -ENODEV if the DECO couldn't be acquired |
| 98 | * - -EAGAIN if an error occurred while executing the descriptor |
| 99 | */ |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 100 | static inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc, |
| 101 | u32 *status) |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 102 | { |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 103 | struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 104 | struct caam_ctrl __iomem *ctrl = ctrlpriv->ctrl; |
| 105 | struct caam_deco __iomem *deco = ctrlpriv->deco; |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 106 | unsigned int timeout = 100000; |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 107 | u32 deco_dbg_reg, flags; |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 108 | int i; |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 109 | |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 110 | |
Horia Geanta | 8f1da7b | 2014-07-21 16:03:21 +0300 | [diff] [blame] | 111 | if (ctrlpriv->virt_en == 1) { |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 112 | clrsetbits_32(&ctrl->deco_rsr, 0, DECORSR_JR0); |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 113 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 114 | while (!(rd_reg32(&ctrl->deco_rsr) & DECORSR_VALID) && |
Horia Geanta | 8f1da7b | 2014-07-21 16:03:21 +0300 | [diff] [blame] | 115 | --timeout) |
| 116 | cpu_relax(); |
| 117 | |
| 118 | timeout = 100000; |
| 119 | } |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 120 | |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 121 | clrsetbits_32(&ctrl->deco_rq, 0, DECORR_RQD0ENABLE); |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 122 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 123 | while (!(rd_reg32(&ctrl->deco_rq) & DECORR_DEN0) && |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 124 | --timeout) |
| 125 | cpu_relax(); |
| 126 | |
| 127 | if (!timeout) { |
| 128 | dev_err(ctrldev, "failed to acquire DECO 0\n"); |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 129 | clrsetbits_32(&ctrl->deco_rq, DECORR_RQD0ENABLE, 0); |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 130 | return -ENODEV; |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 131 | } |
| 132 | |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 133 | for (i = 0; i < desc_len(desc); i++) |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 134 | wr_reg32(&deco->descbuf[i], caam32_to_cpu(*(desc + i))); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 135 | |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 136 | flags = DECO_JQCR_WHL; |
| 137 | /* |
| 138 | * If the descriptor length is longer than 4 words, then the |
| 139 | * FOUR bit in JRCTRL register must be set. |
| 140 | */ |
| 141 | if (desc_len(desc) >= 4) |
| 142 | flags |= DECO_JQCR_FOUR; |
| 143 | |
| 144 | /* Instruct the DECO to execute it */ |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 145 | clrsetbits_32(&deco->jr_ctl_hi, 0, flags); |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 146 | |
| 147 | timeout = 10000000; |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 148 | do { |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 149 | deco_dbg_reg = rd_reg32(&deco->desc_dbg); |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 150 | /* |
| 151 | * If an error occured in the descriptor, then |
| 152 | * the DECO status field will be set to 0x0D |
| 153 | */ |
| 154 | if ((deco_dbg_reg & DESC_DBG_DECO_STAT_MASK) == |
| 155 | DESC_DBG_DECO_STAT_HOST_ERR) |
| 156 | break; |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 157 | cpu_relax(); |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 158 | } while ((deco_dbg_reg & DESC_DBG_DECO_STAT_VALID) && --timeout); |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 159 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 160 | *status = rd_reg32(&deco->op_status_hi) & |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 161 | DECO_OP_STATUS_HI_ERR_MASK; |
| 162 | |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 163 | if (ctrlpriv->virt_en == 1) |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 164 | clrsetbits_32(&ctrl->deco_rsr, DECORSR_JR0, 0); |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 165 | |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 166 | /* Mark the DECO as free */ |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 167 | clrsetbits_32(&ctrl->deco_rq, DECORR_RQD0ENABLE, 0); |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 168 | |
| 169 | if (!timeout) |
| 170 | return -EAGAIN; |
| 171 | |
| 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | /* |
| 176 | * instantiate_rng - builds and executes a descriptor on DECO0, |
| 177 | * which initializes the RNG block. |
| 178 | * @ctrldev - pointer to device |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 179 | * @state_handle_mask - bitmask containing the instantiation status |
| 180 | * for the RNG4 state handles which exist in |
| 181 | * the RNG4 block: 1 if it's been instantiated |
| 182 | * by an external entry, 0 otherwise. |
| 183 | * @gen_sk - generate data to be loaded into the JDKEK, TDKEK and TDSK; |
| 184 | * Caution: this can be done only once; if the keys need to be |
| 185 | * regenerated, a POR is required |
| 186 | * |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 187 | * Return: - 0 if no error occurred |
| 188 | * - -ENOMEM if there isn't enough memory to allocate the descriptor |
| 189 | * - -ENODEV if DECO0 couldn't be acquired |
| 190 | * - -EAGAIN if an error occurred when executing the descriptor |
| 191 | * f.i. there was a RNG hardware error due to not "good enough" |
| 192 | * entropy being aquired. |
| 193 | */ |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 194 | static int instantiate_rng(struct device *ctrldev, int state_handle_mask, |
| 195 | int gen_sk) |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 196 | { |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 197 | struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 198 | struct caam_ctrl __iomem *ctrl; |
Horia Geant? | 62743a4 | 2015-07-17 16:54:53 +0300 | [diff] [blame] | 199 | u32 *desc, status = 0, rdsta_val; |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 200 | int ret = 0, sh_idx; |
| 201 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 202 | ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl; |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 203 | desc = kmalloc(CAAM_CMD_SZ * 7, GFP_KERNEL); |
| 204 | if (!desc) |
| 205 | return -ENOMEM; |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 206 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 207 | for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) { |
| 208 | /* |
| 209 | * If the corresponding bit is set, this state handle |
| 210 | * was initialized by somebody else, so it's left alone. |
| 211 | */ |
| 212 | if ((1 << sh_idx) & state_handle_mask) |
| 213 | continue; |
| 214 | |
| 215 | /* Create the descriptor for instantiating RNG State Handle */ |
| 216 | build_instantiation_desc(desc, sh_idx, gen_sk); |
| 217 | |
| 218 | /* Try to run it through DECO0 */ |
| 219 | ret = run_descriptor_deco0(ctrldev, desc, &status); |
| 220 | |
| 221 | /* |
| 222 | * If ret is not 0, or descriptor status is not 0, then |
| 223 | * something went wrong. No need to try the next state |
| 224 | * handle (if available), bail out here. |
| 225 | * Also, if for some reason, the State Handle didn't get |
| 226 | * instantiated although the descriptor has finished |
| 227 | * without any error (HW optimizations for later |
| 228 | * CAAM eras), then try again. |
| 229 | */ |
Cristian Stoica | 467707b | 2015-01-21 11:53:31 +0200 | [diff] [blame] | 230 | rdsta_val = rd_reg32(&ctrl->r4tst[0].rdsta) & RDSTA_IFMASK; |
Horia Geant? | 62743a4 | 2015-07-17 16:54:53 +0300 | [diff] [blame] | 231 | if ((status && status != JRSTA_SSRC_JUMP_HALT_CC) || |
| 232 | !(rdsta_val & (1 << sh_idx))) |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 233 | ret = -EAGAIN; |
| 234 | if (ret) |
| 235 | break; |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 236 | dev_info(ctrldev, "Instantiated RNG4 SH%d\n", sh_idx); |
| 237 | /* Clear the contents before recreating the descriptor */ |
| 238 | memset(desc, 0x00, CAAM_CMD_SZ * 7); |
Ruchika Gupta | 997ad29 | 2013-07-04 11:26:03 +0530 | [diff] [blame] | 239 | } |
| 240 | |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 241 | kfree(desc); |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 242 | |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 243 | return ret; |
| 244 | } |
| 245 | |
| 246 | /* |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 247 | * deinstantiate_rng - builds and executes a descriptor on DECO0, |
| 248 | * which deinitializes the RNG block. |
| 249 | * @ctrldev - pointer to device |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 250 | * @state_handle_mask - bitmask containing the instantiation status |
| 251 | * for the RNG4 state handles which exist in |
| 252 | * the RNG4 block: 1 if it's been instantiated |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 253 | * |
| 254 | * Return: - 0 if no error occurred |
| 255 | * - -ENOMEM if there isn't enough memory to allocate the descriptor |
| 256 | * - -ENODEV if DECO0 couldn't be acquired |
| 257 | * - -EAGAIN if an error occurred when executing the descriptor |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 258 | */ |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 259 | static int deinstantiate_rng(struct device *ctrldev, int state_handle_mask) |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 260 | { |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 261 | u32 *desc, status; |
| 262 | int sh_idx, ret = 0; |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 263 | |
| 264 | desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL); |
| 265 | if (!desc) |
| 266 | return -ENOMEM; |
| 267 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 268 | for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) { |
| 269 | /* |
| 270 | * If the corresponding bit is set, then it means the state |
| 271 | * handle was initialized by us, and thus it needs to be |
Masahiro Yamada | 1cce200 | 2017-02-27 14:29:45 -0800 | [diff] [blame] | 272 | * deinitialized as well |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 273 | */ |
| 274 | if ((1 << sh_idx) & state_handle_mask) { |
| 275 | /* |
| 276 | * Create the descriptor for deinstantating this state |
| 277 | * handle |
| 278 | */ |
| 279 | build_deinstantiation_desc(desc, sh_idx); |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 280 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 281 | /* Try to run it through DECO0 */ |
| 282 | ret = run_descriptor_deco0(ctrldev, desc, &status); |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 283 | |
Horia Geantă | 40c98cb | 2017-04-05 11:41:03 +0300 | [diff] [blame] | 284 | if (ret || |
| 285 | (status && status != JRSTA_SSRC_JUMP_HALT_CC)) { |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 286 | dev_err(ctrldev, |
| 287 | "Failed to deinstantiate RNG4 SH%d\n", |
| 288 | sh_idx); |
| 289 | break; |
| 290 | } |
| 291 | dev_info(ctrldev, "Deinstantiated RNG4 SH%d\n", sh_idx); |
| 292 | } |
| 293 | } |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 294 | |
| 295 | kfree(desc); |
| 296 | |
| 297 | return ret; |
| 298 | } |
| 299 | |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 300 | static int caam_remove(struct platform_device *pdev) |
| 301 | { |
| 302 | struct device *ctrldev; |
| 303 | struct caam_drv_private *ctrlpriv; |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 304 | struct caam_ctrl __iomem *ctrl; |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 305 | |
| 306 | ctrldev = &pdev->dev; |
| 307 | ctrlpriv = dev_get_drvdata(ctrldev); |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 308 | ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl; |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 309 | |
Horia Geantă | ec36060 | 2017-04-03 18:12:04 +0300 | [diff] [blame] | 310 | /* Remove platform devices under the crypto node */ |
| 311 | of_platform_depopulate(ctrldev); |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 312 | |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 313 | /* De-initialize RNG state handles initialized by this driver. */ |
| 314 | if (ctrlpriv->rng4_sh_init) |
| 315 | deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init); |
Alex Porosanu | b1f996e0 | 2013-09-09 18:56:32 +0300 | [diff] [blame] | 316 | |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 317 | /* Shut down debug views */ |
| 318 | #ifdef CONFIG_DEBUG_FS |
| 319 | debugfs_remove_recursive(ctrlpriv->dfs_root); |
| 320 | #endif |
| 321 | |
| 322 | /* Unmap controller region */ |
Victoria Milhoan | f4ec6aa | 2015-06-15 16:52:58 -0700 | [diff] [blame] | 323 | iounmap(ctrl); |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 324 | |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 325 | /* shut clocks off before finalizing shutdown */ |
| 326 | clk_disable_unprepare(ctrlpriv->caam_ipg); |
| 327 | clk_disable_unprepare(ctrlpriv->caam_mem); |
| 328 | clk_disable_unprepare(ctrlpriv->caam_aclk); |
Marcus Folkesson | b80609a | 2016-11-28 12:53:28 -0500 | [diff] [blame] | 329 | if (ctrlpriv->caam_emi_slow) |
Marcus Folkesson | 4e51881 | 2016-10-17 13:28:00 +0200 | [diff] [blame] | 330 | clk_disable_unprepare(ctrlpriv->caam_emi_slow); |
Fabio Estevam | e558017 | 2015-08-12 14:39:38 -0300 | [diff] [blame] | 331 | return 0; |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /* |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 335 | * kick_trng - sets the various parameters for enabling the initialization |
| 336 | * of the RNG4 block in CAAM |
| 337 | * @pdev - pointer to the platform device |
| 338 | * @ent_delay - Defines the length (in system clocks) of each entropy sample. |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 339 | */ |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 340 | static void kick_trng(struct platform_device *pdev, int ent_delay) |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 341 | { |
| 342 | struct device *ctrldev = &pdev->dev; |
| 343 | struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev); |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 344 | struct caam_ctrl __iomem *ctrl; |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 345 | struct rng4tst __iomem *r4tst; |
| 346 | u32 val; |
| 347 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 348 | ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl; |
| 349 | r4tst = &ctrl->r4tst[0]; |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 350 | |
| 351 | /* put RNG4 into program mode */ |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 352 | clrsetbits_32(&r4tst->rtmctl, 0, RTMCTL_PRGM); |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 353 | |
| 354 | /* |
| 355 | * Performance-wise, it does not make sense to |
| 356 | * set the delay to a value that is lower |
| 357 | * than the last one that worked (i.e. the state handles |
| 358 | * were instantiated properly. Thus, instead of wasting |
| 359 | * time trying to set the values controlling the sample |
| 360 | * frequency, the function simply returns. |
| 361 | */ |
| 362 | val = (rd_reg32(&r4tst->rtsdctl) & RTSDCTL_ENT_DLY_MASK) |
| 363 | >> RTSDCTL_ENT_DLY_SHIFT; |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 364 | if (ent_delay <= val) |
| 365 | goto start_rng; |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 366 | |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 367 | val = rd_reg32(&r4tst->rtsdctl); |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 368 | val = (val & ~RTSDCTL_ENT_DLY_MASK) | |
| 369 | (ent_delay << RTSDCTL_ENT_DLY_SHIFT); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 370 | wr_reg32(&r4tst->rtsdctl, val); |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 371 | /* min. freq. count, equal to 1/4 of the entropy sample length */ |
| 372 | wr_reg32(&r4tst->rtfrqmin, ent_delay >> 2); |
Alex Porosanu | b061f3f | 2014-08-11 11:40:15 +0300 | [diff] [blame] | 373 | /* disable maximum frequency count */ |
| 374 | wr_reg32(&r4tst->rtfrqmax, RTFRQMAX_DISABLE); |
Alex Porosanu | e5ffbfc | 2014-08-11 11:40:17 +0300 | [diff] [blame] | 375 | /* read the control register */ |
| 376 | val = rd_reg32(&r4tst->rtmctl); |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 377 | start_rng: |
Alex Porosanu | e5ffbfc | 2014-08-11 11:40:17 +0300 | [diff] [blame] | 378 | /* |
| 379 | * select raw sampling in both entropy shifter |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 380 | * and statistical checker; ; put RNG4 into run mode |
Alex Porosanu | e5ffbfc | 2014-08-11 11:40:17 +0300 | [diff] [blame] | 381 | */ |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 382 | clrsetbits_32(&r4tst->rtmctl, RTMCTL_PRGM, RTMCTL_SAMP_MODE_RAW_ES_SC); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 383 | } |
| 384 | |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 385 | /** |
| 386 | * caam_get_era() - Return the ERA of the SEC on SoC, based |
Alex Porosanu | 883619a | 2014-02-06 10:27:19 +0200 | [diff] [blame] | 387 | * on "sec-era" propery in the DTS. This property is updated by u-boot. |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 388 | **/ |
Alex Porosanu | 883619a | 2014-02-06 10:27:19 +0200 | [diff] [blame] | 389 | int caam_get_era(void) |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 390 | { |
Alex Porosanu | 883619a | 2014-02-06 10:27:19 +0200 | [diff] [blame] | 391 | struct device_node *caam_node; |
Alex Porosanu | e27513e | 2015-07-17 16:54:51 +0300 | [diff] [blame] | 392 | int ret; |
| 393 | u32 prop; |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 394 | |
Alex Porosanu | e27513e | 2015-07-17 16:54:51 +0300 | [diff] [blame] | 395 | caam_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0"); |
| 396 | ret = of_property_read_u32(caam_node, "fsl,sec-era", &prop); |
| 397 | of_node_put(caam_node); |
| 398 | |
Arnd Bergmann | 287980e | 2016-05-27 23:23:25 +0200 | [diff] [blame] | 399 | return ret ? -ENOTSUPP : prop; |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 400 | } |
| 401 | EXPORT_SYMBOL(caam_get_era); |
| 402 | |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 403 | #ifdef CONFIG_DEBUG_FS |
| 404 | static int caam_debugfs_u64_get(void *data, u64 *val) |
| 405 | { |
| 406 | *val = caam64_to_cpu(*(u64 *)data); |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | static int caam_debugfs_u32_get(void *data, u64 *val) |
| 411 | { |
| 412 | *val = caam32_to_cpu(*(u32 *)data); |
| 413 | return 0; |
| 414 | } |
| 415 | |
| 416 | DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n"); |
| 417 | DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n"); |
| 418 | #endif |
| 419 | |
Horia Geantă | ec36060 | 2017-04-03 18:12:04 +0300 | [diff] [blame] | 420 | static const struct of_device_id caam_match[] = { |
| 421 | { |
| 422 | .compatible = "fsl,sec-v4.0", |
| 423 | }, |
| 424 | { |
| 425 | .compatible = "fsl,sec4.0", |
| 426 | }, |
| 427 | {}, |
| 428 | }; |
| 429 | MODULE_DEVICE_TABLE(of, caam_match); |
| 430 | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 431 | /* Probe routine for CAAM top (controller) level */ |
Kim Phillips | 2930d49 | 2011-05-14 22:07:55 -0500 | [diff] [blame] | 432 | static int caam_probe(struct platform_device *pdev) |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 433 | { |
Horia Geantă | ec36060 | 2017-04-03 18:12:04 +0300 | [diff] [blame] | 434 | int ret, ring, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN; |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 435 | u64 caam_id; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 436 | struct device *dev; |
| 437 | struct device_node *nprop, *np; |
| 438 | struct caam_ctrl __iomem *ctrl; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 439 | struct caam_drv_private *ctrlpriv; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 440 | struct clk *clk; |
Kim Phillips | 23457bc | 2011-06-05 16:42:54 -0500 | [diff] [blame] | 441 | #ifdef CONFIG_DEBUG_FS |
| 442 | struct caam_perfmon *perfmon; |
| 443 | #endif |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 444 | u32 scfgr, comp_params; |
Ruchika Gupta | eb1139c | 2014-06-23 15:08:28 +0530 | [diff] [blame] | 445 | u32 cha_vid_ls; |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 446 | int pg_size; |
| 447 | int BLOCK_OFFSET = 0; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 448 | |
Fabio Estevam | 9c4f973 | 2015-08-21 13:52:00 -0300 | [diff] [blame] | 449 | ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(*ctrlpriv), GFP_KERNEL); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 450 | if (!ctrlpriv) |
| 451 | return -ENOMEM; |
| 452 | |
| 453 | dev = &pdev->dev; |
| 454 | dev_set_drvdata(dev, ctrlpriv); |
| 455 | ctrlpriv->pdev = pdev; |
| 456 | nprop = pdev->dev.of_node; |
| 457 | |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 458 | /* Enable clocking */ |
| 459 | clk = caam_drv_identify_clk(&pdev->dev, "ipg"); |
| 460 | if (IS_ERR(clk)) { |
| 461 | ret = PTR_ERR(clk); |
| 462 | dev_err(&pdev->dev, |
| 463 | "can't identify CAAM ipg clk: %d\n", ret); |
Fabio Estevam | a3c0955 | 2015-08-21 13:51:59 -0300 | [diff] [blame] | 464 | return ret; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 465 | } |
| 466 | ctrlpriv->caam_ipg = clk; |
| 467 | |
| 468 | clk = caam_drv_identify_clk(&pdev->dev, "mem"); |
| 469 | if (IS_ERR(clk)) { |
| 470 | ret = PTR_ERR(clk); |
| 471 | dev_err(&pdev->dev, |
| 472 | "can't identify CAAM mem clk: %d\n", ret); |
Fabio Estevam | a3c0955 | 2015-08-21 13:51:59 -0300 | [diff] [blame] | 473 | return ret; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 474 | } |
| 475 | ctrlpriv->caam_mem = clk; |
| 476 | |
| 477 | clk = caam_drv_identify_clk(&pdev->dev, "aclk"); |
| 478 | if (IS_ERR(clk)) { |
| 479 | ret = PTR_ERR(clk); |
| 480 | dev_err(&pdev->dev, |
| 481 | "can't identify CAAM aclk clk: %d\n", ret); |
Fabio Estevam | a3c0955 | 2015-08-21 13:51:59 -0300 | [diff] [blame] | 482 | return ret; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 483 | } |
| 484 | ctrlpriv->caam_aclk = clk; |
| 485 | |
Marcus Folkesson | 4e51881 | 2016-10-17 13:28:00 +0200 | [diff] [blame] | 486 | if (!of_machine_is_compatible("fsl,imx6ul")) { |
| 487 | clk = caam_drv_identify_clk(&pdev->dev, "emi_slow"); |
| 488 | if (IS_ERR(clk)) { |
| 489 | ret = PTR_ERR(clk); |
| 490 | dev_err(&pdev->dev, |
| 491 | "can't identify CAAM emi_slow clk: %d\n", ret); |
| 492 | return ret; |
| 493 | } |
| 494 | ctrlpriv->caam_emi_slow = clk; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 495 | } |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 496 | |
| 497 | ret = clk_prepare_enable(ctrlpriv->caam_ipg); |
| 498 | if (ret < 0) { |
| 499 | dev_err(&pdev->dev, "can't enable CAAM ipg clock: %d\n", ret); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 500 | return ret; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | ret = clk_prepare_enable(ctrlpriv->caam_mem); |
| 504 | if (ret < 0) { |
| 505 | dev_err(&pdev->dev, "can't enable CAAM secure mem clock: %d\n", |
| 506 | ret); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 507 | goto disable_caam_ipg; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | ret = clk_prepare_enable(ctrlpriv->caam_aclk); |
| 511 | if (ret < 0) { |
| 512 | dev_err(&pdev->dev, "can't enable CAAM aclk clock: %d\n", ret); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 513 | goto disable_caam_mem; |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 514 | } |
| 515 | |
Marcus Folkesson | b80609a | 2016-11-28 12:53:28 -0500 | [diff] [blame] | 516 | if (ctrlpriv->caam_emi_slow) { |
Marcus Folkesson | 4e51881 | 2016-10-17 13:28:00 +0200 | [diff] [blame] | 517 | ret = clk_prepare_enable(ctrlpriv->caam_emi_slow); |
| 518 | if (ret < 0) { |
| 519 | dev_err(&pdev->dev, "can't enable CAAM emi slow clock: %d\n", |
| 520 | ret); |
| 521 | goto disable_caam_aclk; |
| 522 | } |
Victoria Milhoan | 24821c4 | 2015-08-05 11:28:37 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 525 | /* Get configuration properties from device tree */ |
| 526 | /* First, get register page */ |
| 527 | ctrl = of_iomap(nprop, 0); |
| 528 | if (ctrl == NULL) { |
| 529 | dev_err(dev, "caam: of_iomap() failed\n"); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 530 | ret = -ENOMEM; |
| 531 | goto disable_caam_emi_slow; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 532 | } |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 533 | |
| 534 | caam_little_end = !(bool)(rd_reg32(&ctrl->perfmon.status) & |
| 535 | (CSTA_PLEND | CSTA_ALT_PLEND)); |
| 536 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 537 | /* Finding the page size for using the CTPR_MS register */ |
| 538 | comp_params = rd_reg32(&ctrl->perfmon.comp_parms_ms); |
| 539 | pg_size = (comp_params & CTPR_MS_PG_SZ_MASK) >> CTPR_MS_PG_SZ_SHIFT; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 540 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 541 | /* Allocating the BLOCK_OFFSET based on the supported page size on |
| 542 | * the platform |
| 543 | */ |
| 544 | if (pg_size == 0) |
| 545 | BLOCK_OFFSET = PG_SIZE_4K; |
| 546 | else |
| 547 | BLOCK_OFFSET = PG_SIZE_64K; |
| 548 | |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 549 | ctrlpriv->ctrl = (struct caam_ctrl __iomem __force *)ctrl; |
| 550 | ctrlpriv->assure = (struct caam_assurance __iomem __force *) |
| 551 | ((__force uint8_t *)ctrl + |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 552 | BLOCK_OFFSET * ASSURE_BLOCK_NUMBER |
| 553 | ); |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 554 | ctrlpriv->deco = (struct caam_deco __iomem __force *) |
| 555 | ((__force uint8_t *)ctrl + |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 556 | BLOCK_OFFSET * DECO_BLOCK_NUMBER |
| 557 | ); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 558 | |
| 559 | /* Get the IRQ of the controller (for security violations only) */ |
Thierry Reding | f757849 | 2013-09-18 15:24:44 +0200 | [diff] [blame] | 560 | ctrlpriv->secvio_irq = irq_of_parse_and_map(nprop, 0); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 561 | |
| 562 | /* |
| 563 | * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel, |
Kim Phillips | e13af18 | 2012-06-22 19:48:51 -0500 | [diff] [blame] | 564 | * long pointers in master configuration register |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 565 | */ |
Horia Geantă | 39eaf75 | 2016-12-05 11:06:58 +0200 | [diff] [blame] | 566 | clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR, |
| 567 | MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF | |
| 568 | MCFGR_WDENABLE | MCFGR_LARGE_BURST | |
Horia Geant? | e7a7104 | 2016-01-12 17:59:29 +0200 | [diff] [blame] | 569 | (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 570 | |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 571 | /* |
| 572 | * Read the Compile Time paramters and SCFGR to determine |
| 573 | * if Virtualization is enabled for this platform |
| 574 | */ |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 575 | scfgr = rd_reg32(&ctrl->scfgr); |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 576 | |
| 577 | ctrlpriv->virt_en = 0; |
| 578 | if (comp_params & CTPR_MS_VIRT_EN_INCL) { |
| 579 | /* VIRT_EN_INCL = 1 & VIRT_EN_POR = 1 or |
| 580 | * VIRT_EN_INCL = 1 & VIRT_EN_POR = 0 & SCFGR_VIRT_EN = 1 |
| 581 | */ |
| 582 | if ((comp_params & CTPR_MS_VIRT_EN_POR) || |
| 583 | (!(comp_params & CTPR_MS_VIRT_EN_POR) && |
| 584 | (scfgr & SCFGR_VIRT_EN))) |
| 585 | ctrlpriv->virt_en = 1; |
| 586 | } else { |
| 587 | /* VIRT_EN_INCL = 0 && VIRT_EN_POR_VALUE = 1 */ |
| 588 | if (comp_params & CTPR_MS_VIRT_EN_POR) |
| 589 | ctrlpriv->virt_en = 1; |
| 590 | } |
| 591 | |
| 592 | if (ctrlpriv->virt_en == 1) |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 593 | clrsetbits_32(&ctrl->jrstart, 0, JRSTART_JR0_START | |
| 594 | JRSTART_JR1_START | JRSTART_JR2_START | |
| 595 | JRSTART_JR3_START); |
Ruchika Gupta | 17157c9 | 2014-06-23 17:42:33 +0530 | [diff] [blame] | 596 | |
Horia Geantă | b3b5fce | 2017-02-10 14:07:15 +0200 | [diff] [blame] | 597 | if (sizeof(dma_addr_t) == sizeof(u64)) { |
Kim Phillips | e13af18 | 2012-06-22 19:48:51 -0500 | [diff] [blame] | 598 | if (of_device_is_compatible(nprop, "fsl,sec-v5.0")) |
Horia Geantă | b3b5fce | 2017-02-10 14:07:15 +0200 | [diff] [blame] | 599 | ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); |
Kim Phillips | e13af18 | 2012-06-22 19:48:51 -0500 | [diff] [blame] | 600 | else |
Horia Geantă | b3b5fce | 2017-02-10 14:07:15 +0200 | [diff] [blame] | 601 | ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(36)); |
| 602 | } else { |
| 603 | ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); |
| 604 | } |
| 605 | if (ret) { |
| 606 | dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", ret); |
| 607 | goto iounmap_ctrl; |
| 608 | } |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 609 | |
Horia Geantă | ec36060 | 2017-04-03 18:12:04 +0300 | [diff] [blame] | 610 | ret = of_platform_populate(nprop, caam_match, NULL, dev); |
| 611 | if (ret) { |
| 612 | dev_err(dev, "JR platform devices creation error\n"); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 613 | goto iounmap_ctrl; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | ring = 0; |
Nitesh Lal | 0a63b09 | 2014-02-09 09:59:13 +0800 | [diff] [blame] | 617 | for_each_available_child_of_node(nprop, np) |
| 618 | if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") || |
| 619 | of_device_is_compatible(np, "fsl,sec4.0-job-ring")) { |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 620 | ctrlpriv->jr[ring] = (struct caam_job_ring __iomem __force *) |
| 621 | ((__force uint8_t *)ctrl + |
Horia Geantă | ec36060 | 2017-04-03 18:12:04 +0300 | [diff] [blame] | 622 | (ring + JR_BLOCK_NUMBER) * |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 623 | BLOCK_OFFSET |
| 624 | ); |
Shengzhou Liu | a0ea0f6 | 2012-03-21 14:09:10 +0800 | [diff] [blame] | 625 | ctrlpriv->total_jobrs++; |
| 626 | ring++; |
Horia Geantă | ec36060 | 2017-04-03 18:12:04 +0300 | [diff] [blame] | 627 | } |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 628 | |
| 629 | /* Check to see if QI present. If so, enable */ |
Ruchika Gupta | eb1139c | 2014-06-23 15:08:28 +0530 | [diff] [blame] | 630 | ctrlpriv->qi_present = |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 631 | !!(rd_reg32(&ctrl->perfmon.comp_parms_ms) & |
Ruchika Gupta | eb1139c | 2014-06-23 15:08:28 +0530 | [diff] [blame] | 632 | CTPR_MS_QI_MASK); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 633 | if (ctrlpriv->qi_present) { |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 634 | ctrlpriv->qi = (struct caam_queue_if __iomem __force *) |
| 635 | ((__force uint8_t *)ctrl + |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 636 | BLOCK_OFFSET * QI_BLOCK_NUMBER |
| 637 | ); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 638 | /* This is all that's required to physically enable QI */ |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 639 | wr_reg32(&ctrlpriv->qi->qi_control_lo, QICTL_DQEN); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 640 | } |
| 641 | |
| 642 | /* If no QI and no rings specified, quit and go home */ |
| 643 | if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) { |
| 644 | dev_err(dev, "no queues configured, terminating\n"); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 645 | ret = -ENOMEM; |
| 646 | goto caam_remove; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 647 | } |
| 648 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 649 | cha_vid_ls = rd_reg32(&ctrl->perfmon.cha_id_ls); |
Ruchika Gupta | 986dfbc | 2013-04-26 15:44:54 +0530 | [diff] [blame] | 650 | |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 651 | /* |
Ruchika Gupta | 986dfbc | 2013-04-26 15:44:54 +0530 | [diff] [blame] | 652 | * If SEC has RNG version >= 4 and RNG state handle has not been |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 653 | * already instantiated, do RNG instantiation |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 654 | */ |
Ruchika Gupta | eb1139c | 2014-06-23 15:08:28 +0530 | [diff] [blame] | 655 | if ((cha_vid_ls & CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT >= 4) { |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 656 | ctrlpriv->rng4_sh_init = |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 657 | rd_reg32(&ctrl->r4tst[0].rdsta); |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 658 | /* |
| 659 | * If the secure keys (TDKEK, JDKEK, TDSK), were already |
| 660 | * generated, signal this to the function that is instantiating |
| 661 | * the state handles. An error would occur if RNG4 attempts |
| 662 | * to regenerate these keys before the next POR. |
| 663 | */ |
| 664 | gen_sk = ctrlpriv->rng4_sh_init & RDSTA_SKVN ? 0 : 1; |
| 665 | ctrlpriv->rng4_sh_init &= RDSTA_IFMASK; |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 666 | do { |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 667 | int inst_handles = |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 668 | rd_reg32(&ctrl->r4tst[0].rdsta) & |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 669 | RDSTA_IFMASK; |
| 670 | /* |
| 671 | * If either SH were instantiated by somebody else |
| 672 | * (e.g. u-boot) then it is assumed that the entropy |
| 673 | * parameters are properly set and thus the function |
| 674 | * setting these (kick_trng(...)) is skipped. |
| 675 | * Also, if a handle was instantiated, do not change |
| 676 | * the TRNG parameters. |
| 677 | */ |
| 678 | if (!(ctrlpriv->rng4_sh_init || inst_handles)) { |
Alex Porosanu | eeaa172 | 2014-08-11 11:40:16 +0300 | [diff] [blame] | 679 | dev_info(dev, |
| 680 | "Entropy delay = %u\n", |
| 681 | ent_delay); |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 682 | kick_trng(pdev, ent_delay); |
| 683 | ent_delay += 400; |
| 684 | } |
| 685 | /* |
| 686 | * if instantiate_rng(...) fails, the loop will rerun |
| 687 | * and the kick_trng(...) function will modfiy the |
| 688 | * upper and lower limits of the entropy sampling |
| 689 | * interval, leading to a sucessful initialization of |
| 690 | * the RNG. |
| 691 | */ |
| 692 | ret = instantiate_rng(dev, inst_handles, |
| 693 | gen_sk); |
Alex Porosanu | eeaa172 | 2014-08-11 11:40:16 +0300 | [diff] [blame] | 694 | if (ret == -EAGAIN) |
| 695 | /* |
| 696 | * if here, the loop will rerun, |
| 697 | * so don't hog the CPU |
| 698 | */ |
| 699 | cpu_relax(); |
Alex Porosanu | 04cddbf | 2013-09-09 18:56:31 +0300 | [diff] [blame] | 700 | } while ((ret == -EAGAIN) && (ent_delay < RTSDCTL_ENT_DLY_MAX)); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 701 | if (ret) { |
Alex Porosanu | 84cf482 | 2013-09-09 18:56:30 +0300 | [diff] [blame] | 702 | dev_err(dev, "failed to instantiate RNG"); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 703 | goto caam_remove; |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 704 | } |
Alex Porosanu | 1005bcc | 2013-09-09 18:56:34 +0300 | [diff] [blame] | 705 | /* |
| 706 | * Set handles init'ed by this module as the complement of the |
| 707 | * already initialized ones |
| 708 | */ |
| 709 | ctrlpriv->rng4_sh_init = ~ctrlpriv->rng4_sh_init & RDSTA_IFMASK; |
Vakul Garg | 575c1bd | 2013-03-12 13:55:21 +0530 | [diff] [blame] | 710 | |
| 711 | /* Enable RDB bit so that RNG works faster */ |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 712 | clrsetbits_32(&ctrl->scfgr, 0, SCFGR_RDBENABLE); |
Kim Phillips | 281922a | 2012-06-22 19:48:52 -0500 | [diff] [blame] | 713 | } |
| 714 | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 715 | /* NOTE: RTIC detection ought to go here, around Si time */ |
| 716 | |
Nitesh Narayan Lal | fb4562b | 2014-09-01 15:00:44 +0530 | [diff] [blame] | 717 | caam_id = (u64)rd_reg32(&ctrl->perfmon.caam_id_ms) << 32 | |
| 718 | (u64)rd_reg32(&ctrl->perfmon.caam_id_ls); |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 719 | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 720 | /* Report "alive" for developer to see */ |
Alex Porosanu | 82c2f96 | 2012-07-11 11:06:11 +0800 | [diff] [blame] | 721 | dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id, |
Alex Porosanu | 883619a | 2014-02-06 10:27:19 +0200 | [diff] [blame] | 722 | caam_get_era()); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 723 | dev_info(dev, "job rings = %d, qi = %d\n", |
| 724 | ctrlpriv->total_jobrs, ctrlpriv->qi_present); |
| 725 | |
| 726 | #ifdef CONFIG_DEBUG_FS |
| 727 | /* |
| 728 | * FIXME: needs better naming distinction, as some amalgamation of |
| 729 | * "caam" and nprop->full_name. The OF name isn't distinctive, |
| 730 | * but does separate instances |
| 731 | */ |
| 732 | perfmon = (struct caam_perfmon __force *)&ctrl->perfmon; |
| 733 | |
Nitesh Narayan Lal | 178f827 | 2014-07-01 19:54:54 +0530 | [diff] [blame] | 734 | ctrlpriv->dfs_root = debugfs_create_dir(dev_name(dev), NULL); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 735 | ctrlpriv->ctl = debugfs_create_dir("ctl", ctrlpriv->dfs_root); |
| 736 | |
| 737 | /* Controller-level - performance monitor counters */ |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 738 | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 739 | ctrlpriv->ctl_rq_dequeued = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 740 | debugfs_create_file("rq_dequeued", |
| 741 | S_IRUSR | S_IRGRP | S_IROTH, |
| 742 | ctrlpriv->ctl, &perfmon->req_dequeued, |
| 743 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 744 | ctrlpriv->ctl_ob_enc_req = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 745 | debugfs_create_file("ob_rq_encrypted", |
| 746 | S_IRUSR | S_IRGRP | S_IROTH, |
| 747 | ctrlpriv->ctl, &perfmon->ob_enc_req, |
| 748 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 749 | ctrlpriv->ctl_ib_dec_req = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 750 | debugfs_create_file("ib_rq_decrypted", |
| 751 | S_IRUSR | S_IRGRP | S_IROTH, |
| 752 | ctrlpriv->ctl, &perfmon->ib_dec_req, |
| 753 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 754 | ctrlpriv->ctl_ob_enc_bytes = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 755 | debugfs_create_file("ob_bytes_encrypted", |
| 756 | S_IRUSR | S_IRGRP | S_IROTH, |
| 757 | ctrlpriv->ctl, &perfmon->ob_enc_bytes, |
| 758 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 759 | ctrlpriv->ctl_ob_prot_bytes = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 760 | debugfs_create_file("ob_bytes_protected", |
| 761 | S_IRUSR | S_IRGRP | S_IROTH, |
| 762 | ctrlpriv->ctl, &perfmon->ob_prot_bytes, |
| 763 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 764 | ctrlpriv->ctl_ib_dec_bytes = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 765 | debugfs_create_file("ib_bytes_decrypted", |
| 766 | S_IRUSR | S_IRGRP | S_IROTH, |
| 767 | ctrlpriv->ctl, &perfmon->ib_dec_bytes, |
| 768 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 769 | ctrlpriv->ctl_ib_valid_bytes = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 770 | debugfs_create_file("ib_bytes_validated", |
| 771 | S_IRUSR | S_IRGRP | S_IROTH, |
| 772 | ctrlpriv->ctl, &perfmon->ib_valid_bytes, |
| 773 | &caam_fops_u64_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 774 | |
| 775 | /* Controller level - global status values */ |
| 776 | ctrlpriv->ctl_faultaddr = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 777 | debugfs_create_file("fault_addr", |
| 778 | S_IRUSR | S_IRGRP | S_IROTH, |
| 779 | ctrlpriv->ctl, &perfmon->faultaddr, |
| 780 | &caam_fops_u32_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 781 | ctrlpriv->ctl_faultdetail = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 782 | debugfs_create_file("fault_detail", |
| 783 | S_IRUSR | S_IRGRP | S_IROTH, |
| 784 | ctrlpriv->ctl, &perfmon->faultdetail, |
| 785 | &caam_fops_u32_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 786 | ctrlpriv->ctl_faultstatus = |
Horia Geantă | 261ea05 | 2016-05-19 18:11:26 +0300 | [diff] [blame] | 787 | debugfs_create_file("fault_status", |
| 788 | S_IRUSR | S_IRGRP | S_IROTH, |
| 789 | ctrlpriv->ctl, &perfmon->status, |
| 790 | &caam_fops_u32_ro); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 791 | |
| 792 | /* Internal covering keys (useful in non-secure mode only) */ |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 793 | ctrlpriv->ctl_kek_wrap.data = (__force void *)&ctrlpriv->ctrl->kek[0]; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 794 | ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32); |
| 795 | ctrlpriv->ctl_kek = debugfs_create_blob("kek", |
Al Viro | eda65cc | 2011-07-24 04:32:53 -0400 | [diff] [blame] | 796 | S_IRUSR | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 797 | S_IRGRP | S_IROTH, |
| 798 | ctrlpriv->ctl, |
| 799 | &ctrlpriv->ctl_kek_wrap); |
| 800 | |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 801 | ctrlpriv->ctl_tkek_wrap.data = (__force void *)&ctrlpriv->ctrl->tkek[0]; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 802 | ctrlpriv->ctl_tkek_wrap.size = KEK_KEY_SIZE * sizeof(u32); |
| 803 | ctrlpriv->ctl_tkek = debugfs_create_blob("tkek", |
Al Viro | eda65cc | 2011-07-24 04:32:53 -0400 | [diff] [blame] | 804 | S_IRUSR | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 805 | S_IRGRP | S_IROTH, |
| 806 | ctrlpriv->ctl, |
| 807 | &ctrlpriv->ctl_tkek_wrap); |
| 808 | |
Horia Geantă | 8439e94 | 2016-11-09 10:46:14 +0200 | [diff] [blame] | 809 | ctrlpriv->ctl_tdsk_wrap.data = (__force void *)&ctrlpriv->ctrl->tdsk[0]; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 810 | ctrlpriv->ctl_tdsk_wrap.size = KEK_KEY_SIZE * sizeof(u32); |
| 811 | ctrlpriv->ctl_tdsk = debugfs_create_blob("tdsk", |
Al Viro | eda65cc | 2011-07-24 04:32:53 -0400 | [diff] [blame] | 812 | S_IRUSR | |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 813 | S_IRGRP | S_IROTH, |
| 814 | ctrlpriv->ctl, |
| 815 | &ctrlpriv->ctl_tdsk_wrap); |
| 816 | #endif |
| 817 | return 0; |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 818 | |
| 819 | caam_remove: |
| 820 | caam_remove(pdev); |
Russell King | bdc67da | 2016-08-09 08:30:10 +0100 | [diff] [blame] | 821 | return ret; |
| 822 | |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 823 | iounmap_ctrl: |
| 824 | iounmap(ctrl); |
| 825 | disable_caam_emi_slow: |
Marcus Folkesson | b80609a | 2016-11-28 12:53:28 -0500 | [diff] [blame] | 826 | if (ctrlpriv->caam_emi_slow) |
Marcus Folkesson | 4e51881 | 2016-10-17 13:28:00 +0200 | [diff] [blame] | 827 | clk_disable_unprepare(ctrlpriv->caam_emi_slow); |
Fabio Estevam | 31f44d1 | 2015-08-21 13:51:58 -0300 | [diff] [blame] | 828 | disable_caam_aclk: |
| 829 | clk_disable_unprepare(ctrlpriv->caam_aclk); |
| 830 | disable_caam_mem: |
| 831 | clk_disable_unprepare(ctrlpriv->caam_mem); |
| 832 | disable_caam_ipg: |
| 833 | clk_disable_unprepare(ctrlpriv->caam_ipg); |
| 834 | return ret; |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 835 | } |
| 836 | |
Kim Phillips | 2930d49 | 2011-05-14 22:07:55 -0500 | [diff] [blame] | 837 | static struct platform_driver caam_driver = { |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 838 | .driver = { |
| 839 | .name = "caam", |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 840 | .of_match_table = caam_match, |
| 841 | }, |
| 842 | .probe = caam_probe, |
Greg Kroah-Hartman | 49cfe4d | 2012-12-21 13:14:09 -0800 | [diff] [blame] | 843 | .remove = caam_remove, |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 844 | }; |
| 845 | |
Axel Lin | 741e8c2 | 2011-11-26 21:26:19 +0800 | [diff] [blame] | 846 | module_platform_driver(caam_driver); |
Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 847 | |
| 848 | MODULE_LICENSE("GPL"); |
| 849 | MODULE_DESCRIPTION("FSL CAAM request backend"); |
| 850 | MODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); |