163b94509STom Lendacky /* 263b94509STom Lendacky * AMD Cryptographic Coprocessor (CCP) driver 363b94509STom Lendacky * 4553d2374SGary R Hook * Copyright (C) 2013,2016 Advanced Micro Devices, Inc. 563b94509STom Lendacky * 663b94509STom Lendacky * Author: Tom Lendacky <thomas.lendacky@amd.com> 7fba8855cSGary R Hook * Author: Gary R Hook <gary.hook@amd.com> 863b94509STom Lendacky * 963b94509STom Lendacky * This program is free software; you can redistribute it and/or modify 1063b94509STom Lendacky * it under the terms of the GNU General Public License version 2 as 1163b94509STom Lendacky * published by the Free Software Foundation. 1263b94509STom Lendacky */ 1363b94509STom Lendacky 1463b94509STom Lendacky #ifndef __CCP_DEV_H__ 1563b94509STom Lendacky #define __CCP_DEV_H__ 1663b94509STom Lendacky 1763b94509STom Lendacky #include <linux/device.h> 1863b94509STom Lendacky #include <linux/pci.h> 1963b94509STom Lendacky #include <linux/spinlock.h> 2063b94509STom Lendacky #include <linux/mutex.h> 2163b94509STom Lendacky #include <linux/list.h> 2263b94509STom Lendacky #include <linux/wait.h> 2363b94509STom Lendacky #include <linux/dmapool.h> 2463b94509STom Lendacky #include <linux/hw_random.h> 258db88467STom Lendacky #include <linux/bitops.h> 2658ea8abfSGary R Hook #include <linux/interrupt.h> 2758ea8abfSGary R Hook #include <linux/irqreturn.h> 2858ea8abfSGary R Hook #include <linux/dmaengine.h> 2963b94509STom Lendacky 30553d2374SGary R Hook #define MAX_CCP_NAME_LEN 16 3163b94509STom Lendacky #define MAX_DMAPOOL_NAME_LEN 32 3263b94509STom Lendacky 3363b94509STom Lendacky #define MAX_HW_QUEUES 5 3463b94509STom Lendacky #define MAX_CMD_QLEN 100 3563b94509STom Lendacky 3663b94509STom Lendacky #define TRNG_RETRIES 10 3763b94509STom Lendacky 38126ae9adSTom Lendacky #define CACHE_NONE 0x00 39c4f4b325STom Lendacky #define CACHE_WB_NO_ALLOC 0xb7 40c4f4b325STom Lendacky 4163b94509STom Lendacky /****** Register Mappings ******/ 4263b94509STom Lendacky #define Q_MASK_REG 0x000 4363b94509STom Lendacky #define TRNG_OUT_REG 0x00c 4463b94509STom Lendacky #define IRQ_MASK_REG 0x040 4563b94509STom Lendacky #define IRQ_STATUS_REG 0x200 4663b94509STom Lendacky 4763b94509STom Lendacky #define DEL_CMD_Q_JOB 0x124 4863b94509STom Lendacky #define DEL_Q_ACTIVE 0x00000200 4963b94509STom Lendacky #define DEL_Q_ID_SHIFT 6 5063b94509STom Lendacky 5163b94509STom Lendacky #define CMD_REQ0 0x180 5263b94509STom Lendacky #define CMD_REQ_INCR 0x04 5363b94509STom Lendacky 5463b94509STom Lendacky #define CMD_Q_STATUS_BASE 0x210 5563b94509STom Lendacky #define CMD_Q_INT_STATUS_BASE 0x214 5663b94509STom Lendacky #define CMD_Q_STATUS_INCR 0x20 5763b94509STom Lendacky 58c4f4b325STom Lendacky #define CMD_Q_CACHE_BASE 0x228 5963b94509STom Lendacky #define CMD_Q_CACHE_INC 0x20 6063b94509STom Lendacky 618db88467STom Lendacky #define CMD_Q_ERROR(__qs) ((__qs) & 0x0000003f) 628db88467STom Lendacky #define CMD_Q_DEPTH(__qs) (((__qs) >> 12) & 0x0000000f) 6363b94509STom Lendacky 644b394a23SGary R Hook /* ------------------------ CCP Version 5 Specifics ------------------------ */ 654b394a23SGary R Hook #define CMD5_QUEUE_MASK_OFFSET 0x00 66e14e7d12SGary R Hook #define CMD5_QUEUE_PRIO_OFFSET 0x04 674b394a23SGary R Hook #define CMD5_REQID_CONFIG_OFFSET 0x08 68e14e7d12SGary R Hook #define CMD5_CMD_TIMEOUT_OFFSET 0x10 694b394a23SGary R Hook #define LSB_PUBLIC_MASK_LO_OFFSET 0x18 704b394a23SGary R Hook #define LSB_PUBLIC_MASK_HI_OFFSET 0x1C 714b394a23SGary R Hook #define LSB_PRIVATE_MASK_LO_OFFSET 0x20 724b394a23SGary R Hook #define LSB_PRIVATE_MASK_HI_OFFSET 0x24 734b394a23SGary R Hook 744b394a23SGary R Hook #define CMD5_Q_CONTROL_BASE 0x0000 754b394a23SGary R Hook #define CMD5_Q_TAIL_LO_BASE 0x0004 764b394a23SGary R Hook #define CMD5_Q_HEAD_LO_BASE 0x0008 774b394a23SGary R Hook #define CMD5_Q_INT_ENABLE_BASE 0x000C 784b394a23SGary R Hook #define CMD5_Q_INTERRUPT_STATUS_BASE 0x0010 794b394a23SGary R Hook 804b394a23SGary R Hook #define CMD5_Q_STATUS_BASE 0x0100 814b394a23SGary R Hook #define CMD5_Q_INT_STATUS_BASE 0x0104 824b394a23SGary R Hook #define CMD5_Q_DMA_STATUS_BASE 0x0108 834b394a23SGary R Hook #define CMD5_Q_DMA_READ_STATUS_BASE 0x010C 844b394a23SGary R Hook #define CMD5_Q_DMA_WRITE_STATUS_BASE 0x0110 854b394a23SGary R Hook #define CMD5_Q_ABORT_BASE 0x0114 864b394a23SGary R Hook #define CMD5_Q_AX_CACHE_BASE 0x0118 874b394a23SGary R Hook 88e14e7d12SGary R Hook #define CMD5_CONFIG_0_OFFSET 0x6000 89e14e7d12SGary R Hook #define CMD5_TRNG_CTL_OFFSET 0x6008 90e14e7d12SGary R Hook #define CMD5_AES_MASK_OFFSET 0x6010 91e14e7d12SGary R Hook #define CMD5_CLK_GATE_CTL_OFFSET 0x603C 92e14e7d12SGary R Hook 934b394a23SGary R Hook /* Address offset between two virtual queue registers */ 944b394a23SGary R Hook #define CMD5_Q_STATUS_INCR 0x1000 954b394a23SGary R Hook 964b394a23SGary R Hook /* Bit masks */ 974b394a23SGary R Hook #define CMD5_Q_RUN 0x1 984b394a23SGary R Hook #define CMD5_Q_HALT 0x2 994b394a23SGary R Hook #define CMD5_Q_MEM_LOCATION 0x4 1004b394a23SGary R Hook #define CMD5_Q_SIZE 0x1F 1014b394a23SGary R Hook #define CMD5_Q_SHIFT 3 1024b394a23SGary R Hook #define COMMANDS_PER_QUEUE 16 1034b394a23SGary R Hook #define QUEUE_SIZE_VAL ((ffs(COMMANDS_PER_QUEUE) - 2) & \ 1044b394a23SGary R Hook CMD5_Q_SIZE) 1054b394a23SGary R Hook #define Q_PTR_MASK (2 << (QUEUE_SIZE_VAL + 5) - 1) 1064b394a23SGary R Hook #define Q_DESC_SIZE sizeof(struct ccp5_desc) 1074b394a23SGary R Hook #define Q_SIZE(n) (COMMANDS_PER_QUEUE*(n)) 1084b394a23SGary R Hook 1094b394a23SGary R Hook #define INT_COMPLETION 0x1 1104b394a23SGary R Hook #define INT_ERROR 0x2 1114b394a23SGary R Hook #define INT_QUEUE_STOPPED 0x4 1124b394a23SGary R Hook #define ALL_INTERRUPTS (INT_COMPLETION| \ 1134b394a23SGary R Hook INT_ERROR| \ 1144b394a23SGary R Hook INT_QUEUE_STOPPED) 1154b394a23SGary R Hook 1164b394a23SGary R Hook #define LSB_REGION_WIDTH 5 1174b394a23SGary R Hook #define MAX_LSB_CNT 8 1184b394a23SGary R Hook 1194b394a23SGary R Hook #define LSB_SIZE 16 1204b394a23SGary R Hook #define LSB_ITEM_SIZE 32 1214b394a23SGary R Hook #define PLSB_MAP_SIZE (LSB_SIZE) 1224b394a23SGary R Hook #define SLSB_MAP_SIZE (MAX_LSB_CNT * LSB_SIZE) 1234b394a23SGary R Hook 1244b394a23SGary R Hook #define LSB_ENTRY_NUMBER(LSB_ADDR) (LSB_ADDR / LSB_ITEM_SIZE) 1254b394a23SGary R Hook 1264b394a23SGary R Hook /* ------------------------ CCP Version 3 Specifics ------------------------ */ 12763b94509STom Lendacky #define REQ0_WAIT_FOR_WRITE 0x00000004 12863b94509STom Lendacky #define REQ0_INT_ON_COMPLETE 0x00000002 12963b94509STom Lendacky #define REQ0_STOP_ON_COMPLETE 0x00000001 13063b94509STom Lendacky 13163b94509STom Lendacky #define REQ0_CMD_Q_SHIFT 9 13263b94509STom Lendacky #define REQ0_JOBID_SHIFT 3 13363b94509STom Lendacky 13463b94509STom Lendacky /****** REQ1 Related Values ******/ 13563b94509STom Lendacky #define REQ1_PROTECT_SHIFT 27 13663b94509STom Lendacky #define REQ1_ENGINE_SHIFT 23 13763b94509STom Lendacky #define REQ1_KEY_KSB_SHIFT 2 13863b94509STom Lendacky 13963b94509STom Lendacky #define REQ1_EOM 0x00000002 14063b94509STom Lendacky #define REQ1_INIT 0x00000001 14163b94509STom Lendacky 14263b94509STom Lendacky /* AES Related Values */ 14363b94509STom Lendacky #define REQ1_AES_TYPE_SHIFT 21 14463b94509STom Lendacky #define REQ1_AES_MODE_SHIFT 18 14563b94509STom Lendacky #define REQ1_AES_ACTION_SHIFT 17 14663b94509STom Lendacky #define REQ1_AES_CFB_SIZE_SHIFT 10 14763b94509STom Lendacky 14863b94509STom Lendacky /* XTS-AES Related Values */ 14963b94509STom Lendacky #define REQ1_XTS_AES_SIZE_SHIFT 10 15063b94509STom Lendacky 15163b94509STom Lendacky /* SHA Related Values */ 15263b94509STom Lendacky #define REQ1_SHA_TYPE_SHIFT 21 15363b94509STom Lendacky 15463b94509STom Lendacky /* RSA Related Values */ 15563b94509STom Lendacky #define REQ1_RSA_MOD_SIZE_SHIFT 10 15663b94509STom Lendacky 15763b94509STom Lendacky /* Pass-Through Related Values */ 15863b94509STom Lendacky #define REQ1_PT_BW_SHIFT 12 15963b94509STom Lendacky #define REQ1_PT_BS_SHIFT 10 16063b94509STom Lendacky 16163b94509STom Lendacky /* ECC Related Values */ 16263b94509STom Lendacky #define REQ1_ECC_AFFINE_CONVERT 0x00200000 16363b94509STom Lendacky #define REQ1_ECC_FUNCTION_SHIFT 18 16463b94509STom Lendacky 16563b94509STom Lendacky /****** REQ4 Related Values ******/ 16663b94509STom Lendacky #define REQ4_KSB_SHIFT 18 16763b94509STom Lendacky #define REQ4_MEMTYPE_SHIFT 16 16863b94509STom Lendacky 16963b94509STom Lendacky /****** REQ6 Related Values ******/ 17063b94509STom Lendacky #define REQ6_MEMTYPE_SHIFT 16 17163b94509STom Lendacky 17263b94509STom Lendacky /****** Key Storage Block ******/ 17363b94509STom Lendacky #define KSB_START 77 17463b94509STom Lendacky #define KSB_END 127 17563b94509STom Lendacky #define KSB_COUNT (KSB_END - KSB_START + 1) 176956ee21aSGary R Hook #define CCP_SB_BITS 256 17763b94509STom Lendacky 17863b94509STom Lendacky #define CCP_JOBID_MASK 0x0000003f 17963b94509STom Lendacky 1804b394a23SGary R Hook /* ------------------------ General CCP Defines ------------------------ */ 1814b394a23SGary R Hook 18263b94509STom Lendacky #define CCP_DMAPOOL_MAX_SIZE 64 1838db88467STom Lendacky #define CCP_DMAPOOL_ALIGN BIT(5) 18463b94509STom Lendacky 18563b94509STom Lendacky #define CCP_REVERSE_BUF_SIZE 64 18663b94509STom Lendacky 187956ee21aSGary R Hook #define CCP_AES_KEY_SB_COUNT 1 188956ee21aSGary R Hook #define CCP_AES_CTX_SB_COUNT 1 18963b94509STom Lendacky 190956ee21aSGary R Hook #define CCP_XTS_AES_KEY_SB_COUNT 1 191956ee21aSGary R Hook #define CCP_XTS_AES_CTX_SB_COUNT 1 19263b94509STom Lendacky 193*990672d4SGary R Hook #define CCP_DES3_KEY_SB_COUNT 1 194*990672d4SGary R Hook #define CCP_DES3_CTX_SB_COUNT 1 195*990672d4SGary R Hook 196956ee21aSGary R Hook #define CCP_SHA_SB_COUNT 1 19763b94509STom Lendacky 19863b94509STom Lendacky #define CCP_RSA_MAX_WIDTH 4096 19963b94509STom Lendacky 20063b94509STom Lendacky #define CCP_PASSTHRU_BLOCKSIZE 256 20163b94509STom Lendacky #define CCP_PASSTHRU_MASKSIZE 32 202956ee21aSGary R Hook #define CCP_PASSTHRU_SB_COUNT 1 20363b94509STom Lendacky 20463b94509STom Lendacky #define CCP_ECC_MODULUS_BYTES 48 /* 384-bits */ 20563b94509STom Lendacky #define CCP_ECC_MAX_OPERANDS 6 20663b94509STom Lendacky #define CCP_ECC_MAX_OUTPUTS 3 20763b94509STom Lendacky #define CCP_ECC_SRC_BUF_SIZE 448 20863b94509STom Lendacky #define CCP_ECC_DST_BUF_SIZE 192 20963b94509STom Lendacky #define CCP_ECC_OPERAND_SIZE 64 21063b94509STom Lendacky #define CCP_ECC_OUTPUT_SIZE 64 21163b94509STom Lendacky #define CCP_ECC_RESULT_OFFSET 60 21263b94509STom Lendacky #define CCP_ECC_RESULT_SUCCESS 0x0001 21363b94509STom Lendacky 214956ee21aSGary R Hook #define CCP_SB_BYTES 32 215956ee21aSGary R Hook 216ea0375afSGary R Hook struct ccp_op; 21763b94509STom Lendacky struct ccp_device; 21863b94509STom Lendacky struct ccp_cmd; 2194b394a23SGary R Hook struct ccp_fns; 22063b94509STom Lendacky 22158ea8abfSGary R Hook struct ccp_dma_cmd { 22258ea8abfSGary R Hook struct list_head entry; 22358ea8abfSGary R Hook 22458ea8abfSGary R Hook struct ccp_cmd ccp_cmd; 22558ea8abfSGary R Hook }; 22658ea8abfSGary R Hook 22758ea8abfSGary R Hook struct ccp_dma_desc { 22858ea8abfSGary R Hook struct list_head entry; 22958ea8abfSGary R Hook 23058ea8abfSGary R Hook struct ccp_device *ccp; 23158ea8abfSGary R Hook 23258ea8abfSGary R Hook struct list_head pending; 23358ea8abfSGary R Hook struct list_head active; 23458ea8abfSGary R Hook 23558ea8abfSGary R Hook enum dma_status status; 23658ea8abfSGary R Hook struct dma_async_tx_descriptor tx_desc; 23758ea8abfSGary R Hook size_t len; 23858ea8abfSGary R Hook }; 23958ea8abfSGary R Hook 24058ea8abfSGary R Hook struct ccp_dma_chan { 24158ea8abfSGary R Hook struct ccp_device *ccp; 24258ea8abfSGary R Hook 24358ea8abfSGary R Hook spinlock_t lock; 244e5da5c56SGary R Hook struct list_head created; 24558ea8abfSGary R Hook struct list_head pending; 24658ea8abfSGary R Hook struct list_head active; 24758ea8abfSGary R Hook struct list_head complete; 24858ea8abfSGary R Hook 24958ea8abfSGary R Hook struct tasklet_struct cleanup_tasklet; 25058ea8abfSGary R Hook 25158ea8abfSGary R Hook enum dma_status status; 25258ea8abfSGary R Hook struct dma_chan dma_chan; 25358ea8abfSGary R Hook }; 25458ea8abfSGary R Hook 25563b94509STom Lendacky struct ccp_cmd_queue { 25663b94509STom Lendacky struct ccp_device *ccp; 25763b94509STom Lendacky 25863b94509STom Lendacky /* Queue identifier */ 25963b94509STom Lendacky u32 id; 26063b94509STom Lendacky 26163b94509STom Lendacky /* Queue dma pool */ 26263b94509STom Lendacky struct dma_pool *dma_pool; 26363b94509STom Lendacky 2644b394a23SGary R Hook /* Queue base address (not neccessarily aligned)*/ 2654b394a23SGary R Hook struct ccp5_desc *qbase; 2664b394a23SGary R Hook 2674b394a23SGary R Hook /* Aligned queue start address (per requirement) */ 2684b394a23SGary R Hook struct mutex q_mutex ____cacheline_aligned; 2694b394a23SGary R Hook unsigned int qidx; 2704b394a23SGary R Hook 2714b394a23SGary R Hook /* Version 5 has different requirements for queue memory */ 2724b394a23SGary R Hook unsigned int qsize; 2734b394a23SGary R Hook dma_addr_t qbase_dma; 2744b394a23SGary R Hook dma_addr_t qdma_tail; 2754b394a23SGary R Hook 276956ee21aSGary R Hook /* Per-queue reserved storage block(s) */ 277956ee21aSGary R Hook u32 sb_key; 278956ee21aSGary R Hook u32 sb_ctx; 27963b94509STom Lendacky 2804b394a23SGary R Hook /* Bitmap of LSBs that can be accessed by this queue */ 2814b394a23SGary R Hook DECLARE_BITMAP(lsbmask, MAX_LSB_CNT); 2824b394a23SGary R Hook /* Private LSB that is assigned to this queue, or -1 if none. 2834b394a23SGary R Hook * Bitmap for my private LSB, unused otherwise 2844b394a23SGary R Hook */ 2853cf79968SGary R Hook int lsb; 2864b394a23SGary R Hook DECLARE_BITMAP(lsbmap, PLSB_MAP_SIZE); 2874b394a23SGary R Hook 28863b94509STom Lendacky /* Queue processing thread */ 28963b94509STom Lendacky struct task_struct *kthread; 29063b94509STom Lendacky unsigned int active; 29163b94509STom Lendacky unsigned int suspended; 29263b94509STom Lendacky 29363b94509STom Lendacky /* Number of free command slots available */ 29463b94509STom Lendacky unsigned int free_slots; 29563b94509STom Lendacky 29663b94509STom Lendacky /* Interrupt masks */ 29763b94509STom Lendacky u32 int_ok; 29863b94509STom Lendacky u32 int_err; 29963b94509STom Lendacky 30063b94509STom Lendacky /* Register addresses for queue */ 3014b394a23SGary R Hook void __iomem *reg_control; 3024b394a23SGary R Hook void __iomem *reg_tail_lo; 3034b394a23SGary R Hook void __iomem *reg_head_lo; 3044b394a23SGary R Hook void __iomem *reg_int_enable; 3054b394a23SGary R Hook void __iomem *reg_interrupt_status; 30663b94509STom Lendacky void __iomem *reg_status; 30763b94509STom Lendacky void __iomem *reg_int_status; 3084b394a23SGary R Hook void __iomem *reg_dma_status; 3094b394a23SGary R Hook void __iomem *reg_dma_read_status; 3104b394a23SGary R Hook void __iomem *reg_dma_write_status; 3114b394a23SGary R Hook u32 qcontrol; /* Cached control register */ 31263b94509STom Lendacky 31363b94509STom Lendacky /* Status values from job */ 31463b94509STom Lendacky u32 int_status; 31563b94509STom Lendacky u32 q_status; 31663b94509STom Lendacky u32 q_int_status; 31763b94509STom Lendacky u32 cmd_error; 31863b94509STom Lendacky 31963b94509STom Lendacky /* Interrupt wait queue */ 32063b94509STom Lendacky wait_queue_head_t int_queue; 32163b94509STom Lendacky unsigned int int_rcvd; 32263b94509STom Lendacky } ____cacheline_aligned; 32363b94509STom Lendacky 32463b94509STom Lendacky struct ccp_device { 325553d2374SGary R Hook struct list_head entry; 326553d2374SGary R Hook 327c7019c4dSGary R Hook struct ccp_vdata *vdata; 328553d2374SGary R Hook unsigned int ord; 329553d2374SGary R Hook char name[MAX_CCP_NAME_LEN]; 330553d2374SGary R Hook char rngname[MAX_CCP_NAME_LEN]; 331553d2374SGary R Hook 33263b94509STom Lendacky struct device *dev; 33363b94509STom Lendacky 334fa242e80SGary R Hook /* Bus specific device information 33563b94509STom Lendacky */ 33663b94509STom Lendacky void *dev_specific; 33763b94509STom Lendacky int (*get_irq)(struct ccp_device *ccp); 33863b94509STom Lendacky void (*free_irq)(struct ccp_device *ccp); 3393d77565bSTom Lendacky unsigned int irq; 34063b94509STom Lendacky 341fa242e80SGary R Hook /* I/O area used for device communication. The register mapping 34263b94509STom Lendacky * starts at an offset into the mapped bar. 34363b94509STom Lendacky * The CMD_REQx registers and the Delete_Cmd_Queue_Job register 34463b94509STom Lendacky * need to be protected while a command queue thread is accessing 34563b94509STom Lendacky * them. 34663b94509STom Lendacky */ 34763b94509STom Lendacky struct mutex req_mutex ____cacheline_aligned; 34863b94509STom Lendacky void __iomem *io_map; 34963b94509STom Lendacky void __iomem *io_regs; 35063b94509STom Lendacky 351fa242e80SGary R Hook /* Master lists that all cmds are queued on. Because there can be 35263b94509STom Lendacky * more than one CCP command queue that can process a cmd a separate 35363b94509STom Lendacky * backlog list is neeeded so that the backlog completion call 35463b94509STom Lendacky * completes before the cmd is available for execution. 35563b94509STom Lendacky */ 35663b94509STom Lendacky spinlock_t cmd_lock ____cacheline_aligned; 35763b94509STom Lendacky unsigned int cmd_count; 35863b94509STom Lendacky struct list_head cmd; 35963b94509STom Lendacky struct list_head backlog; 36063b94509STom Lendacky 361fa242e80SGary R Hook /* The command queues. These represent the queues available on the 36263b94509STom Lendacky * CCP that are available for processing cmds 36363b94509STom Lendacky */ 36463b94509STom Lendacky struct ccp_cmd_queue cmd_q[MAX_HW_QUEUES]; 36563b94509STom Lendacky unsigned int cmd_q_count; 36663b94509STom Lendacky 367fa242e80SGary R Hook /* Support for the CCP True RNG 36863b94509STom Lendacky */ 36963b94509STom Lendacky struct hwrng hwrng; 37063b94509STom Lendacky unsigned int hwrng_retries; 37163b94509STom Lendacky 372fa242e80SGary R Hook /* Support for the CCP DMA capabilities 37358ea8abfSGary R Hook */ 37458ea8abfSGary R Hook struct dma_device dma_dev; 37558ea8abfSGary R Hook struct ccp_dma_chan *ccp_dma_chan; 37658ea8abfSGary R Hook struct kmem_cache *dma_cmd_cache; 37758ea8abfSGary R Hook struct kmem_cache *dma_desc_cache; 37858ea8abfSGary R Hook 379fa242e80SGary R Hook /* A counter used to generate job-ids for cmds submitted to the CCP 38063b94509STom Lendacky */ 38163b94509STom Lendacky atomic_t current_id ____cacheline_aligned; 38263b94509STom Lendacky 38358a690b7SGary R Hook /* The v3 CCP uses key storage blocks (SB) to maintain context for 38458a690b7SGary R Hook * certain operations. To prevent multiple cmds from using the same 38558a690b7SGary R Hook * SB range a command queue reserves an SB range for the duration of 38658a690b7SGary R Hook * the cmd. Each queue, will however, reserve 2 SB blocks for 38758a690b7SGary R Hook * operations that only require single SB entries (eg. AES context/iv 38858a690b7SGary R Hook * and key) in order to avoid allocation contention. This will reserve 38958a690b7SGary R Hook * at most 10 SB entries, leaving 40 SB entries available for dynamic 39058a690b7SGary R Hook * allocation. 39158a690b7SGary R Hook * 39258a690b7SGary R Hook * The v5 CCP Local Storage Block (LSB) is broken up into 8 39358a690b7SGary R Hook * memrory ranges, each of which can be enabled for access by one 39458a690b7SGary R Hook * or more queues. Device initialization takes this into account, 39558a690b7SGary R Hook * and attempts to assign one region for exclusive use by each 39658a690b7SGary R Hook * available queue; the rest are then aggregated as "public" use. 39758a690b7SGary R Hook * If there are fewer regions than queues, all regions are shared 39858a690b7SGary R Hook * amongst all queues. 39963b94509STom Lendacky */ 400956ee21aSGary R Hook struct mutex sb_mutex ____cacheline_aligned; 401956ee21aSGary R Hook DECLARE_BITMAP(sb, KSB_COUNT); 402956ee21aSGary R Hook wait_queue_head_t sb_queue; 403956ee21aSGary R Hook unsigned int sb_avail; 404956ee21aSGary R Hook unsigned int sb_count; 405956ee21aSGary R Hook u32 sb_start; 40663b94509STom Lendacky 4074b394a23SGary R Hook /* Bitmap of shared LSBs, if any */ 4084b394a23SGary R Hook DECLARE_BITMAP(lsbmap, SLSB_MAP_SIZE); 4094b394a23SGary R Hook 41063b94509STom Lendacky /* Suspend support */ 41163b94509STom Lendacky unsigned int suspending; 41263b94509STom Lendacky wait_queue_head_t suspend_queue; 413126ae9adSTom Lendacky 414126ae9adSTom Lendacky /* DMA caching attribute support */ 415126ae9adSTom Lendacky unsigned int axcache; 41663b94509STom Lendacky }; 41763b94509STom Lendacky 418ea0375afSGary R Hook enum ccp_memtype { 419ea0375afSGary R Hook CCP_MEMTYPE_SYSTEM = 0, 420956ee21aSGary R Hook CCP_MEMTYPE_SB, 421ea0375afSGary R Hook CCP_MEMTYPE_LOCAL, 422ea0375afSGary R Hook CCP_MEMTYPE__LAST, 423ea0375afSGary R Hook }; 4244b394a23SGary R Hook #define CCP_MEMTYPE_LSB CCP_MEMTYPE_KSB 425ea0375afSGary R Hook 426ea0375afSGary R Hook struct ccp_dma_info { 427ea0375afSGary R Hook dma_addr_t address; 428ea0375afSGary R Hook unsigned int offset; 429ea0375afSGary R Hook unsigned int length; 430ea0375afSGary R Hook enum dma_data_direction dir; 431ea0375afSGary R Hook }; 432ea0375afSGary R Hook 433ea0375afSGary R Hook struct ccp_dm_workarea { 434ea0375afSGary R Hook struct device *dev; 435ea0375afSGary R Hook struct dma_pool *dma_pool; 436ea0375afSGary R Hook unsigned int length; 437ea0375afSGary R Hook 438ea0375afSGary R Hook u8 *address; 439ea0375afSGary R Hook struct ccp_dma_info dma; 440ea0375afSGary R Hook }; 441ea0375afSGary R Hook 442ea0375afSGary R Hook struct ccp_sg_workarea { 443ea0375afSGary R Hook struct scatterlist *sg; 444ea0375afSGary R Hook int nents; 445ea0375afSGary R Hook 446ea0375afSGary R Hook struct scatterlist *dma_sg; 447ea0375afSGary R Hook struct device *dma_dev; 448ea0375afSGary R Hook unsigned int dma_count; 449ea0375afSGary R Hook enum dma_data_direction dma_dir; 450ea0375afSGary R Hook 451ea0375afSGary R Hook unsigned int sg_used; 452ea0375afSGary R Hook 453ea0375afSGary R Hook u64 bytes_left; 454ea0375afSGary R Hook }; 455ea0375afSGary R Hook 456ea0375afSGary R Hook struct ccp_data { 457ea0375afSGary R Hook struct ccp_sg_workarea sg_wa; 458ea0375afSGary R Hook struct ccp_dm_workarea dm_wa; 459ea0375afSGary R Hook }; 460ea0375afSGary R Hook 461ea0375afSGary R Hook struct ccp_mem { 462ea0375afSGary R Hook enum ccp_memtype type; 463ea0375afSGary R Hook union { 464ea0375afSGary R Hook struct ccp_dma_info dma; 465956ee21aSGary R Hook u32 sb; 466ea0375afSGary R Hook } u; 467ea0375afSGary R Hook }; 468ea0375afSGary R Hook 469ea0375afSGary R Hook struct ccp_aes_op { 470ea0375afSGary R Hook enum ccp_aes_type type; 471ea0375afSGary R Hook enum ccp_aes_mode mode; 472ea0375afSGary R Hook enum ccp_aes_action action; 473f7cc02b3SGary R Hook unsigned int size; 474ea0375afSGary R Hook }; 475ea0375afSGary R Hook 476ea0375afSGary R Hook struct ccp_xts_aes_op { 477ea0375afSGary R Hook enum ccp_aes_action action; 478ea0375afSGary R Hook enum ccp_xts_aes_unit_size unit_size; 479ea0375afSGary R Hook }; 480ea0375afSGary R Hook 481*990672d4SGary R Hook struct ccp_des3_op { 482*990672d4SGary R Hook enum ccp_des3_type type; 483*990672d4SGary R Hook enum ccp_des3_mode mode; 484*990672d4SGary R Hook enum ccp_des3_action action; 485*990672d4SGary R Hook }; 486*990672d4SGary R Hook 487ea0375afSGary R Hook struct ccp_sha_op { 488ea0375afSGary R Hook enum ccp_sha_type type; 489ea0375afSGary R Hook u64 msg_bits; 490ea0375afSGary R Hook }; 491ea0375afSGary R Hook 492ea0375afSGary R Hook struct ccp_rsa_op { 493ea0375afSGary R Hook u32 mod_size; 494ea0375afSGary R Hook u32 input_len; 495ea0375afSGary R Hook }; 496ea0375afSGary R Hook 497ea0375afSGary R Hook struct ccp_passthru_op { 498ea0375afSGary R Hook enum ccp_passthru_bitwise bit_mod; 499ea0375afSGary R Hook enum ccp_passthru_byteswap byte_swap; 500ea0375afSGary R Hook }; 501ea0375afSGary R Hook 502ea0375afSGary R Hook struct ccp_ecc_op { 503ea0375afSGary R Hook enum ccp_ecc_function function; 504ea0375afSGary R Hook }; 505ea0375afSGary R Hook 506ea0375afSGary R Hook struct ccp_op { 507ea0375afSGary R Hook struct ccp_cmd_queue *cmd_q; 508ea0375afSGary R Hook 509ea0375afSGary R Hook u32 jobid; 510ea0375afSGary R Hook u32 ioc; 511ea0375afSGary R Hook u32 soc; 512956ee21aSGary R Hook u32 sb_key; 513956ee21aSGary R Hook u32 sb_ctx; 514ea0375afSGary R Hook u32 init; 515ea0375afSGary R Hook u32 eom; 516ea0375afSGary R Hook 517ea0375afSGary R Hook struct ccp_mem src; 518ea0375afSGary R Hook struct ccp_mem dst; 5194b394a23SGary R Hook struct ccp_mem exp; 520ea0375afSGary R Hook 521ea0375afSGary R Hook union { 522ea0375afSGary R Hook struct ccp_aes_op aes; 523ea0375afSGary R Hook struct ccp_xts_aes_op xts; 524*990672d4SGary R Hook struct ccp_des3_op des3; 525ea0375afSGary R Hook struct ccp_sha_op sha; 526ea0375afSGary R Hook struct ccp_rsa_op rsa; 527ea0375afSGary R Hook struct ccp_passthru_op passthru; 528ea0375afSGary R Hook struct ccp_ecc_op ecc; 529ea0375afSGary R Hook } u; 530ea0375afSGary R Hook }; 531ea0375afSGary R Hook 532ea0375afSGary R Hook static inline u32 ccp_addr_lo(struct ccp_dma_info *info) 533ea0375afSGary R Hook { 534ea0375afSGary R Hook return lower_32_bits(info->address + info->offset); 535ea0375afSGary R Hook } 536ea0375afSGary R Hook 537ea0375afSGary R Hook static inline u32 ccp_addr_hi(struct ccp_dma_info *info) 538ea0375afSGary R Hook { 539ea0375afSGary R Hook return upper_32_bits(info->address + info->offset) & 0x0000ffff; 540ea0375afSGary R Hook } 541ea0375afSGary R Hook 5424b394a23SGary R Hook /** 5434b394a23SGary R Hook * descriptor for version 5 CPP commands 5444b394a23SGary R Hook * 8 32-bit words: 5454b394a23SGary R Hook * word 0: function; engine; control bits 5464b394a23SGary R Hook * word 1: length of source data 5474b394a23SGary R Hook * word 2: low 32 bits of source pointer 5484b394a23SGary R Hook * word 3: upper 16 bits of source pointer; source memory type 5494b394a23SGary R Hook * word 4: low 32 bits of destination pointer 5504b394a23SGary R Hook * word 5: upper 16 bits of destination pointer; destination memory type 5514b394a23SGary R Hook * word 6: low 32 bits of key pointer 5524b394a23SGary R Hook * word 7: upper 16 bits of key pointer; key memory type 5534b394a23SGary R Hook */ 5544b394a23SGary R Hook struct dword0 { 555fdd2cf9dSGary R Hook unsigned int soc:1; 556fdd2cf9dSGary R Hook unsigned int ioc:1; 557fdd2cf9dSGary R Hook unsigned int rsvd1:1; 558fdd2cf9dSGary R Hook unsigned int init:1; 559fdd2cf9dSGary R Hook unsigned int eom:1; /* AES/SHA only */ 560fdd2cf9dSGary R Hook unsigned int function:15; 561fdd2cf9dSGary R Hook unsigned int engine:4; 562fdd2cf9dSGary R Hook unsigned int prot:1; 563fdd2cf9dSGary R Hook unsigned int rsvd2:7; 5644b394a23SGary R Hook }; 5654b394a23SGary R Hook 5664b394a23SGary R Hook struct dword3 { 567fdd2cf9dSGary R Hook unsigned int src_hi:16; 568fdd2cf9dSGary R Hook unsigned int src_mem:2; 569fdd2cf9dSGary R Hook unsigned int lsb_cxt_id:8; 570fdd2cf9dSGary R Hook unsigned int rsvd1:5; 571fdd2cf9dSGary R Hook unsigned int fixed:1; 5724b394a23SGary R Hook }; 5734b394a23SGary R Hook 5744b394a23SGary R Hook union dword4 { 5754b394a23SGary R Hook __le32 dst_lo; /* NON-SHA */ 5764b394a23SGary R Hook __le32 sha_len_lo; /* SHA */ 5774b394a23SGary R Hook }; 5784b394a23SGary R Hook 5794b394a23SGary R Hook union dword5 { 5804b394a23SGary R Hook struct { 581fdd2cf9dSGary R Hook unsigned int dst_hi:16; 582fdd2cf9dSGary R Hook unsigned int dst_mem:2; 583fdd2cf9dSGary R Hook unsigned int rsvd1:13; 584fdd2cf9dSGary R Hook unsigned int fixed:1; 5854b394a23SGary R Hook } fields; 5864b394a23SGary R Hook __le32 sha_len_hi; 5874b394a23SGary R Hook }; 5884b394a23SGary R Hook 5894b394a23SGary R Hook struct dword7 { 590fdd2cf9dSGary R Hook unsigned int key_hi:16; 591fdd2cf9dSGary R Hook unsigned int key_mem:2; 592fdd2cf9dSGary R Hook unsigned int rsvd1:14; 5934b394a23SGary R Hook }; 5944b394a23SGary R Hook 5954b394a23SGary R Hook struct ccp5_desc { 5964b394a23SGary R Hook struct dword0 dw0; 5974b394a23SGary R Hook __le32 length; 5984b394a23SGary R Hook __le32 src_lo; 5994b394a23SGary R Hook struct dword3 dw3; 6004b394a23SGary R Hook union dword4 dw4; 6014b394a23SGary R Hook union dword5 dw5; 6024b394a23SGary R Hook __le32 key_lo; 6034b394a23SGary R Hook struct dword7 dw7; 6044b394a23SGary R Hook }; 6054b394a23SGary R Hook 60663b94509STom Lendacky int ccp_pci_init(void); 60763b94509STom Lendacky void ccp_pci_exit(void); 60863b94509STom Lendacky 609c4f4b325STom Lendacky int ccp_platform_init(void); 610c4f4b325STom Lendacky void ccp_platform_exit(void); 611c4f4b325STom Lendacky 612ea0375afSGary R Hook void ccp_add_device(struct ccp_device *ccp); 613ea0375afSGary R Hook void ccp_del_device(struct ccp_device *ccp); 61463b94509STom Lendacky 61581422badSGary R Hook extern void ccp_log_error(struct ccp_device *, int); 61681422badSGary R Hook 617ea0375afSGary R Hook struct ccp_device *ccp_alloc_struct(struct device *dev); 618ea0375afSGary R Hook bool ccp_queues_suspended(struct ccp_device *ccp); 619ea0375afSGary R Hook int ccp_cmd_queue_thread(void *data); 6208256e683SGary R Hook int ccp_trng_read(struct hwrng *rng, void *data, size_t max, bool wait); 62163b94509STom Lendacky 62263b94509STom Lendacky int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd); 62363b94509STom Lendacky 624084935b2SGary R Hook int ccp_register_rng(struct ccp_device *ccp); 625084935b2SGary R Hook void ccp_unregister_rng(struct ccp_device *ccp); 62658ea8abfSGary R Hook int ccp_dmaengine_register(struct ccp_device *ccp); 62758ea8abfSGary R Hook void ccp_dmaengine_unregister(struct ccp_device *ccp); 62858ea8abfSGary R Hook 62958a690b7SGary R Hook /* Structure for computation functions that are device-specific */ 63058a690b7SGary R Hook struct ccp_actions { 63158a690b7SGary R Hook int (*aes)(struct ccp_op *); 63258a690b7SGary R Hook int (*xts_aes)(struct ccp_op *); 633*990672d4SGary R Hook int (*des3)(struct ccp_op *); 63458a690b7SGary R Hook int (*sha)(struct ccp_op *); 63558a690b7SGary R Hook int (*rsa)(struct ccp_op *); 63658a690b7SGary R Hook int (*passthru)(struct ccp_op *); 63758a690b7SGary R Hook int (*ecc)(struct ccp_op *); 63858a690b7SGary R Hook u32 (*sballoc)(struct ccp_cmd_queue *, unsigned int); 639*990672d4SGary R Hook void (*sbfree)(struct ccp_cmd_queue *, unsigned int, unsigned int); 640bb4e89b3SGary R Hook unsigned int (*get_free_slots)(struct ccp_cmd_queue *); 64158a690b7SGary R Hook int (*init)(struct ccp_device *); 64258a690b7SGary R Hook void (*destroy)(struct ccp_device *); 64358a690b7SGary R Hook irqreturn_t (*irqhandler)(int, void *); 64458a690b7SGary R Hook }; 64558a690b7SGary R Hook 64658a690b7SGary R Hook /* Structure to hold CCP version-specific values */ 64758a690b7SGary R Hook struct ccp_vdata { 6484b394a23SGary R Hook const unsigned int version; 6494b394a23SGary R Hook void (*setup)(struct ccp_device *); 65058a690b7SGary R Hook const struct ccp_actions *perform; 65158a690b7SGary R Hook const unsigned int bar; 65258a690b7SGary R Hook const unsigned int offset; 65358a690b7SGary R Hook }; 65458a690b7SGary R Hook 6559ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv3; 6569ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv5a; 6579ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv5b; 65858a690b7SGary R Hook 65963b94509STom Lendacky #endif 660