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 182*efc989fcSGary R Hook #define CCP_DMA_DFLT 0x0 183*efc989fcSGary R Hook #define CCP_DMA_PRIV 0x1 184*efc989fcSGary R Hook #define CCP_DMA_PUB 0x2 185*efc989fcSGary R Hook 18663b94509STom Lendacky #define CCP_DMAPOOL_MAX_SIZE 64 1878db88467STom Lendacky #define CCP_DMAPOOL_ALIGN BIT(5) 18863b94509STom Lendacky 18963b94509STom Lendacky #define CCP_REVERSE_BUF_SIZE 64 19063b94509STom Lendacky 191956ee21aSGary R Hook #define CCP_AES_KEY_SB_COUNT 1 192956ee21aSGary R Hook #define CCP_AES_CTX_SB_COUNT 1 19363b94509STom Lendacky 194956ee21aSGary R Hook #define CCP_XTS_AES_KEY_SB_COUNT 1 195956ee21aSGary R Hook #define CCP_XTS_AES_CTX_SB_COUNT 1 19663b94509STom Lendacky 197956ee21aSGary R Hook #define CCP_SHA_SB_COUNT 1 19863b94509STom Lendacky 19963b94509STom Lendacky #define CCP_RSA_MAX_WIDTH 4096 20063b94509STom Lendacky 20163b94509STom Lendacky #define CCP_PASSTHRU_BLOCKSIZE 256 20263b94509STom Lendacky #define CCP_PASSTHRU_MASKSIZE 32 203956ee21aSGary R Hook #define CCP_PASSTHRU_SB_COUNT 1 20463b94509STom Lendacky 20563b94509STom Lendacky #define CCP_ECC_MODULUS_BYTES 48 /* 384-bits */ 20663b94509STom Lendacky #define CCP_ECC_MAX_OPERANDS 6 20763b94509STom Lendacky #define CCP_ECC_MAX_OUTPUTS 3 20863b94509STom Lendacky #define CCP_ECC_SRC_BUF_SIZE 448 20963b94509STom Lendacky #define CCP_ECC_DST_BUF_SIZE 192 21063b94509STom Lendacky #define CCP_ECC_OPERAND_SIZE 64 21163b94509STom Lendacky #define CCP_ECC_OUTPUT_SIZE 64 21263b94509STom Lendacky #define CCP_ECC_RESULT_OFFSET 60 21363b94509STom Lendacky #define CCP_ECC_RESULT_SUCCESS 0x0001 21463b94509STom Lendacky 215956ee21aSGary R Hook #define CCP_SB_BYTES 32 216956ee21aSGary R Hook 217ea0375afSGary R Hook struct ccp_op; 21863b94509STom Lendacky struct ccp_device; 21963b94509STom Lendacky struct ccp_cmd; 2204b394a23SGary R Hook struct ccp_fns; 22163b94509STom Lendacky 22258ea8abfSGary R Hook struct ccp_dma_cmd { 22358ea8abfSGary R Hook struct list_head entry; 22458ea8abfSGary R Hook 22558ea8abfSGary R Hook struct ccp_cmd ccp_cmd; 22658ea8abfSGary R Hook }; 22758ea8abfSGary R Hook 22858ea8abfSGary R Hook struct ccp_dma_desc { 22958ea8abfSGary R Hook struct list_head entry; 23058ea8abfSGary R Hook 23158ea8abfSGary R Hook struct ccp_device *ccp; 23258ea8abfSGary R Hook 23358ea8abfSGary R Hook struct list_head pending; 23458ea8abfSGary R Hook struct list_head active; 23558ea8abfSGary R Hook 23658ea8abfSGary R Hook enum dma_status status; 23758ea8abfSGary R Hook struct dma_async_tx_descriptor tx_desc; 23858ea8abfSGary R Hook size_t len; 23958ea8abfSGary R Hook }; 24058ea8abfSGary R Hook 24158ea8abfSGary R Hook struct ccp_dma_chan { 24258ea8abfSGary R Hook struct ccp_device *ccp; 24358ea8abfSGary R Hook 24458ea8abfSGary R Hook spinlock_t lock; 245e5da5c56SGary R Hook struct list_head created; 24658ea8abfSGary R Hook struct list_head pending; 24758ea8abfSGary R Hook struct list_head active; 24858ea8abfSGary R Hook struct list_head complete; 24958ea8abfSGary R Hook 25058ea8abfSGary R Hook struct tasklet_struct cleanup_tasklet; 25158ea8abfSGary R Hook 25258ea8abfSGary R Hook enum dma_status status; 25358ea8abfSGary R Hook struct dma_chan dma_chan; 25458ea8abfSGary R Hook }; 25558ea8abfSGary R Hook 25663b94509STom Lendacky struct ccp_cmd_queue { 25763b94509STom Lendacky struct ccp_device *ccp; 25863b94509STom Lendacky 25963b94509STom Lendacky /* Queue identifier */ 26063b94509STom Lendacky u32 id; 26163b94509STom Lendacky 26263b94509STom Lendacky /* Queue dma pool */ 26363b94509STom Lendacky struct dma_pool *dma_pool; 26463b94509STom Lendacky 2654b394a23SGary R Hook /* Queue base address (not neccessarily aligned)*/ 2664b394a23SGary R Hook struct ccp5_desc *qbase; 2674b394a23SGary R Hook 2684b394a23SGary R Hook /* Aligned queue start address (per requirement) */ 2694b394a23SGary R Hook struct mutex q_mutex ____cacheline_aligned; 2704b394a23SGary R Hook unsigned int qidx; 2714b394a23SGary R Hook 2724b394a23SGary R Hook /* Version 5 has different requirements for queue memory */ 2734b394a23SGary R Hook unsigned int qsize; 2744b394a23SGary R Hook dma_addr_t qbase_dma; 2754b394a23SGary R Hook dma_addr_t qdma_tail; 2764b394a23SGary R Hook 277956ee21aSGary R Hook /* Per-queue reserved storage block(s) */ 278956ee21aSGary R Hook u32 sb_key; 279956ee21aSGary R Hook u32 sb_ctx; 28063b94509STom Lendacky 2814b394a23SGary R Hook /* Bitmap of LSBs that can be accessed by this queue */ 2824b394a23SGary R Hook DECLARE_BITMAP(lsbmask, MAX_LSB_CNT); 2834b394a23SGary R Hook /* Private LSB that is assigned to this queue, or -1 if none. 2844b394a23SGary R Hook * Bitmap for my private LSB, unused otherwise 2854b394a23SGary R Hook */ 2863cf79968SGary R Hook int lsb; 2874b394a23SGary R Hook DECLARE_BITMAP(lsbmap, PLSB_MAP_SIZE); 2884b394a23SGary R Hook 28963b94509STom Lendacky /* Queue processing thread */ 29063b94509STom Lendacky struct task_struct *kthread; 29163b94509STom Lendacky unsigned int active; 29263b94509STom Lendacky unsigned int suspended; 29363b94509STom Lendacky 29463b94509STom Lendacky /* Number of free command slots available */ 29563b94509STom Lendacky unsigned int free_slots; 29663b94509STom Lendacky 29763b94509STom Lendacky /* Interrupt masks */ 29863b94509STom Lendacky u32 int_ok; 29963b94509STom Lendacky u32 int_err; 30063b94509STom Lendacky 30163b94509STom Lendacky /* Register addresses for queue */ 3024b394a23SGary R Hook void __iomem *reg_control; 3034b394a23SGary R Hook void __iomem *reg_tail_lo; 3044b394a23SGary R Hook void __iomem *reg_head_lo; 3054b394a23SGary R Hook void __iomem *reg_int_enable; 3064b394a23SGary R Hook void __iomem *reg_interrupt_status; 30763b94509STom Lendacky void __iomem *reg_status; 30863b94509STom Lendacky void __iomem *reg_int_status; 3094b394a23SGary R Hook void __iomem *reg_dma_status; 3104b394a23SGary R Hook void __iomem *reg_dma_read_status; 3114b394a23SGary R Hook void __iomem *reg_dma_write_status; 3124b394a23SGary R Hook u32 qcontrol; /* Cached control register */ 31363b94509STom Lendacky 31463b94509STom Lendacky /* Status values from job */ 31563b94509STom Lendacky u32 int_status; 31663b94509STom Lendacky u32 q_status; 31763b94509STom Lendacky u32 q_int_status; 31863b94509STom Lendacky u32 cmd_error; 31963b94509STom Lendacky 32063b94509STom Lendacky /* Interrupt wait queue */ 32163b94509STom Lendacky wait_queue_head_t int_queue; 32263b94509STom Lendacky unsigned int int_rcvd; 32363b94509STom Lendacky } ____cacheline_aligned; 32463b94509STom Lendacky 32563b94509STom Lendacky struct ccp_device { 326553d2374SGary R Hook struct list_head entry; 327553d2374SGary R Hook 328c7019c4dSGary R Hook struct ccp_vdata *vdata; 329553d2374SGary R Hook unsigned int ord; 330553d2374SGary R Hook char name[MAX_CCP_NAME_LEN]; 331553d2374SGary R Hook char rngname[MAX_CCP_NAME_LEN]; 332553d2374SGary R Hook 33363b94509STom Lendacky struct device *dev; 33463b94509STom Lendacky 335fa242e80SGary R Hook /* Bus specific device information 33663b94509STom Lendacky */ 33763b94509STom Lendacky void *dev_specific; 33863b94509STom Lendacky int (*get_irq)(struct ccp_device *ccp); 33963b94509STom Lendacky void (*free_irq)(struct ccp_device *ccp); 3403d77565bSTom Lendacky unsigned int irq; 34163b94509STom Lendacky 342fa242e80SGary R Hook /* I/O area used for device communication. The register mapping 34363b94509STom Lendacky * starts at an offset into the mapped bar. 34463b94509STom Lendacky * The CMD_REQx registers and the Delete_Cmd_Queue_Job register 34563b94509STom Lendacky * need to be protected while a command queue thread is accessing 34663b94509STom Lendacky * them. 34763b94509STom Lendacky */ 34863b94509STom Lendacky struct mutex req_mutex ____cacheline_aligned; 34963b94509STom Lendacky void __iomem *io_map; 35063b94509STom Lendacky void __iomem *io_regs; 35163b94509STom Lendacky 352fa242e80SGary R Hook /* Master lists that all cmds are queued on. Because there can be 35363b94509STom Lendacky * more than one CCP command queue that can process a cmd a separate 35463b94509STom Lendacky * backlog list is neeeded so that the backlog completion call 35563b94509STom Lendacky * completes before the cmd is available for execution. 35663b94509STom Lendacky */ 35763b94509STom Lendacky spinlock_t cmd_lock ____cacheline_aligned; 35863b94509STom Lendacky unsigned int cmd_count; 35963b94509STom Lendacky struct list_head cmd; 36063b94509STom Lendacky struct list_head backlog; 36163b94509STom Lendacky 362fa242e80SGary R Hook /* The command queues. These represent the queues available on the 36363b94509STom Lendacky * CCP that are available for processing cmds 36463b94509STom Lendacky */ 36563b94509STom Lendacky struct ccp_cmd_queue cmd_q[MAX_HW_QUEUES]; 36663b94509STom Lendacky unsigned int cmd_q_count; 36763b94509STom Lendacky 368fa242e80SGary R Hook /* Support for the CCP True RNG 36963b94509STom Lendacky */ 37063b94509STom Lendacky struct hwrng hwrng; 37163b94509STom Lendacky unsigned int hwrng_retries; 37263b94509STom Lendacky 373fa242e80SGary R Hook /* Support for the CCP DMA capabilities 37458ea8abfSGary R Hook */ 37558ea8abfSGary R Hook struct dma_device dma_dev; 37658ea8abfSGary R Hook struct ccp_dma_chan *ccp_dma_chan; 37758ea8abfSGary R Hook struct kmem_cache *dma_cmd_cache; 37858ea8abfSGary R Hook struct kmem_cache *dma_desc_cache; 37958ea8abfSGary R Hook 380fa242e80SGary R Hook /* A counter used to generate job-ids for cmds submitted to the CCP 38163b94509STom Lendacky */ 38263b94509STom Lendacky atomic_t current_id ____cacheline_aligned; 38363b94509STom Lendacky 38458a690b7SGary R Hook /* The v3 CCP uses key storage blocks (SB) to maintain context for 38558a690b7SGary R Hook * certain operations. To prevent multiple cmds from using the same 38658a690b7SGary R Hook * SB range a command queue reserves an SB range for the duration of 38758a690b7SGary R Hook * the cmd. Each queue, will however, reserve 2 SB blocks for 38858a690b7SGary R Hook * operations that only require single SB entries (eg. AES context/iv 38958a690b7SGary R Hook * and key) in order to avoid allocation contention. This will reserve 39058a690b7SGary R Hook * at most 10 SB entries, leaving 40 SB entries available for dynamic 39158a690b7SGary R Hook * allocation. 39258a690b7SGary R Hook * 39358a690b7SGary R Hook * The v5 CCP Local Storage Block (LSB) is broken up into 8 39458a690b7SGary R Hook * memrory ranges, each of which can be enabled for access by one 39558a690b7SGary R Hook * or more queues. Device initialization takes this into account, 39658a690b7SGary R Hook * and attempts to assign one region for exclusive use by each 39758a690b7SGary R Hook * available queue; the rest are then aggregated as "public" use. 39858a690b7SGary R Hook * If there are fewer regions than queues, all regions are shared 39958a690b7SGary R Hook * amongst all queues. 40063b94509STom Lendacky */ 401956ee21aSGary R Hook struct mutex sb_mutex ____cacheline_aligned; 402956ee21aSGary R Hook DECLARE_BITMAP(sb, KSB_COUNT); 403956ee21aSGary R Hook wait_queue_head_t sb_queue; 404956ee21aSGary R Hook unsigned int sb_avail; 405956ee21aSGary R Hook unsigned int sb_count; 406956ee21aSGary R Hook u32 sb_start; 40763b94509STom Lendacky 4084b394a23SGary R Hook /* Bitmap of shared LSBs, if any */ 4094b394a23SGary R Hook DECLARE_BITMAP(lsbmap, SLSB_MAP_SIZE); 4104b394a23SGary R Hook 41163b94509STom Lendacky /* Suspend support */ 41263b94509STom Lendacky unsigned int suspending; 41363b94509STom Lendacky wait_queue_head_t suspend_queue; 414126ae9adSTom Lendacky 415126ae9adSTom Lendacky /* DMA caching attribute support */ 416126ae9adSTom Lendacky unsigned int axcache; 41763b94509STom Lendacky }; 41863b94509STom Lendacky 419ea0375afSGary R Hook enum ccp_memtype { 420ea0375afSGary R Hook CCP_MEMTYPE_SYSTEM = 0, 421956ee21aSGary R Hook CCP_MEMTYPE_SB, 422ea0375afSGary R Hook CCP_MEMTYPE_LOCAL, 423ea0375afSGary R Hook CCP_MEMTYPE__LAST, 424ea0375afSGary R Hook }; 4254b394a23SGary R Hook #define CCP_MEMTYPE_LSB CCP_MEMTYPE_KSB 426ea0375afSGary R Hook 427ea0375afSGary R Hook struct ccp_dma_info { 428ea0375afSGary R Hook dma_addr_t address; 429ea0375afSGary R Hook unsigned int offset; 430ea0375afSGary R Hook unsigned int length; 431ea0375afSGary R Hook enum dma_data_direction dir; 432ea0375afSGary R Hook }; 433ea0375afSGary R Hook 434ea0375afSGary R Hook struct ccp_dm_workarea { 435ea0375afSGary R Hook struct device *dev; 436ea0375afSGary R Hook struct dma_pool *dma_pool; 437ea0375afSGary R Hook unsigned int length; 438ea0375afSGary R Hook 439ea0375afSGary R Hook u8 *address; 440ea0375afSGary R Hook struct ccp_dma_info dma; 441ea0375afSGary R Hook }; 442ea0375afSGary R Hook 443ea0375afSGary R Hook struct ccp_sg_workarea { 444ea0375afSGary R Hook struct scatterlist *sg; 445ea0375afSGary R Hook int nents; 446ea0375afSGary R Hook 447ea0375afSGary R Hook struct scatterlist *dma_sg; 448ea0375afSGary R Hook struct device *dma_dev; 449ea0375afSGary R Hook unsigned int dma_count; 450ea0375afSGary R Hook enum dma_data_direction dma_dir; 451ea0375afSGary R Hook 452ea0375afSGary R Hook unsigned int sg_used; 453ea0375afSGary R Hook 454ea0375afSGary R Hook u64 bytes_left; 455ea0375afSGary R Hook }; 456ea0375afSGary R Hook 457ea0375afSGary R Hook struct ccp_data { 458ea0375afSGary R Hook struct ccp_sg_workarea sg_wa; 459ea0375afSGary R Hook struct ccp_dm_workarea dm_wa; 460ea0375afSGary R Hook }; 461ea0375afSGary R Hook 462ea0375afSGary R Hook struct ccp_mem { 463ea0375afSGary R Hook enum ccp_memtype type; 464ea0375afSGary R Hook union { 465ea0375afSGary R Hook struct ccp_dma_info dma; 466956ee21aSGary R Hook u32 sb; 467ea0375afSGary R Hook } u; 468ea0375afSGary R Hook }; 469ea0375afSGary R Hook 470ea0375afSGary R Hook struct ccp_aes_op { 471ea0375afSGary R Hook enum ccp_aes_type type; 472ea0375afSGary R Hook enum ccp_aes_mode mode; 473ea0375afSGary R Hook enum ccp_aes_action action; 474f7cc02b3SGary R Hook unsigned int size; 475ea0375afSGary R Hook }; 476ea0375afSGary R Hook 477ea0375afSGary R Hook struct ccp_xts_aes_op { 478ea0375afSGary R Hook enum ccp_aes_action action; 479ea0375afSGary R Hook enum ccp_xts_aes_unit_size unit_size; 480ea0375afSGary R Hook }; 481ea0375afSGary R Hook 482ea0375afSGary R Hook struct ccp_sha_op { 483ea0375afSGary R Hook enum ccp_sha_type type; 484ea0375afSGary R Hook u64 msg_bits; 485ea0375afSGary R Hook }; 486ea0375afSGary R Hook 487ea0375afSGary R Hook struct ccp_rsa_op { 488ea0375afSGary R Hook u32 mod_size; 489ea0375afSGary R Hook u32 input_len; 490ea0375afSGary R Hook }; 491ea0375afSGary R Hook 492ea0375afSGary R Hook struct ccp_passthru_op { 493ea0375afSGary R Hook enum ccp_passthru_bitwise bit_mod; 494ea0375afSGary R Hook enum ccp_passthru_byteswap byte_swap; 495ea0375afSGary R Hook }; 496ea0375afSGary R Hook 497ea0375afSGary R Hook struct ccp_ecc_op { 498ea0375afSGary R Hook enum ccp_ecc_function function; 499ea0375afSGary R Hook }; 500ea0375afSGary R Hook 501ea0375afSGary R Hook struct ccp_op { 502ea0375afSGary R Hook struct ccp_cmd_queue *cmd_q; 503ea0375afSGary R Hook 504ea0375afSGary R Hook u32 jobid; 505ea0375afSGary R Hook u32 ioc; 506ea0375afSGary R Hook u32 soc; 507956ee21aSGary R Hook u32 sb_key; 508956ee21aSGary R Hook u32 sb_ctx; 509ea0375afSGary R Hook u32 init; 510ea0375afSGary R Hook u32 eom; 511ea0375afSGary R Hook 512ea0375afSGary R Hook struct ccp_mem src; 513ea0375afSGary R Hook struct ccp_mem dst; 5144b394a23SGary R Hook struct ccp_mem exp; 515ea0375afSGary R Hook 516ea0375afSGary R Hook union { 517ea0375afSGary R Hook struct ccp_aes_op aes; 518ea0375afSGary R Hook struct ccp_xts_aes_op xts; 519ea0375afSGary R Hook struct ccp_sha_op sha; 520ea0375afSGary R Hook struct ccp_rsa_op rsa; 521ea0375afSGary R Hook struct ccp_passthru_op passthru; 522ea0375afSGary R Hook struct ccp_ecc_op ecc; 523ea0375afSGary R Hook } u; 524ea0375afSGary R Hook }; 525ea0375afSGary R Hook 526ea0375afSGary R Hook static inline u32 ccp_addr_lo(struct ccp_dma_info *info) 527ea0375afSGary R Hook { 528ea0375afSGary R Hook return lower_32_bits(info->address + info->offset); 529ea0375afSGary R Hook } 530ea0375afSGary R Hook 531ea0375afSGary R Hook static inline u32 ccp_addr_hi(struct ccp_dma_info *info) 532ea0375afSGary R Hook { 533ea0375afSGary R Hook return upper_32_bits(info->address + info->offset) & 0x0000ffff; 534ea0375afSGary R Hook } 535ea0375afSGary R Hook 5364b394a23SGary R Hook /** 5374b394a23SGary R Hook * descriptor for version 5 CPP commands 5384b394a23SGary R Hook * 8 32-bit words: 5394b394a23SGary R Hook * word 0: function; engine; control bits 5404b394a23SGary R Hook * word 1: length of source data 5414b394a23SGary R Hook * word 2: low 32 bits of source pointer 5424b394a23SGary R Hook * word 3: upper 16 bits of source pointer; source memory type 5434b394a23SGary R Hook * word 4: low 32 bits of destination pointer 5444b394a23SGary R Hook * word 5: upper 16 bits of destination pointer; destination memory type 5454b394a23SGary R Hook * word 6: low 32 bits of key pointer 5464b394a23SGary R Hook * word 7: upper 16 bits of key pointer; key memory type 5474b394a23SGary R Hook */ 5484b394a23SGary R Hook struct dword0 { 549fdd2cf9dSGary R Hook unsigned int soc:1; 550fdd2cf9dSGary R Hook unsigned int ioc:1; 551fdd2cf9dSGary R Hook unsigned int rsvd1:1; 552fdd2cf9dSGary R Hook unsigned int init:1; 553fdd2cf9dSGary R Hook unsigned int eom:1; /* AES/SHA only */ 554fdd2cf9dSGary R Hook unsigned int function:15; 555fdd2cf9dSGary R Hook unsigned int engine:4; 556fdd2cf9dSGary R Hook unsigned int prot:1; 557fdd2cf9dSGary R Hook unsigned int rsvd2:7; 5584b394a23SGary R Hook }; 5594b394a23SGary R Hook 5604b394a23SGary R Hook struct dword3 { 561fdd2cf9dSGary R Hook unsigned int src_hi:16; 562fdd2cf9dSGary R Hook unsigned int src_mem:2; 563fdd2cf9dSGary R Hook unsigned int lsb_cxt_id:8; 564fdd2cf9dSGary R Hook unsigned int rsvd1:5; 565fdd2cf9dSGary R Hook unsigned int fixed:1; 5664b394a23SGary R Hook }; 5674b394a23SGary R Hook 5684b394a23SGary R Hook union dword4 { 5694b394a23SGary R Hook __le32 dst_lo; /* NON-SHA */ 5704b394a23SGary R Hook __le32 sha_len_lo; /* SHA */ 5714b394a23SGary R Hook }; 5724b394a23SGary R Hook 5734b394a23SGary R Hook union dword5 { 5744b394a23SGary R Hook struct { 575fdd2cf9dSGary R Hook unsigned int dst_hi:16; 576fdd2cf9dSGary R Hook unsigned int dst_mem:2; 577fdd2cf9dSGary R Hook unsigned int rsvd1:13; 578fdd2cf9dSGary R Hook unsigned int fixed:1; 5794b394a23SGary R Hook } fields; 5804b394a23SGary R Hook __le32 sha_len_hi; 5814b394a23SGary R Hook }; 5824b394a23SGary R Hook 5834b394a23SGary R Hook struct dword7 { 584fdd2cf9dSGary R Hook unsigned int key_hi:16; 585fdd2cf9dSGary R Hook unsigned int key_mem:2; 586fdd2cf9dSGary R Hook unsigned int rsvd1:14; 5874b394a23SGary R Hook }; 5884b394a23SGary R Hook 5894b394a23SGary R Hook struct ccp5_desc { 5904b394a23SGary R Hook struct dword0 dw0; 5914b394a23SGary R Hook __le32 length; 5924b394a23SGary R Hook __le32 src_lo; 5934b394a23SGary R Hook struct dword3 dw3; 5944b394a23SGary R Hook union dword4 dw4; 5954b394a23SGary R Hook union dword5 dw5; 5964b394a23SGary R Hook __le32 key_lo; 5974b394a23SGary R Hook struct dword7 dw7; 5984b394a23SGary R Hook }; 5994b394a23SGary R Hook 60063b94509STom Lendacky int ccp_pci_init(void); 60163b94509STom Lendacky void ccp_pci_exit(void); 60263b94509STom Lendacky 603c4f4b325STom Lendacky int ccp_platform_init(void); 604c4f4b325STom Lendacky void ccp_platform_exit(void); 605c4f4b325STom Lendacky 606ea0375afSGary R Hook void ccp_add_device(struct ccp_device *ccp); 607ea0375afSGary R Hook void ccp_del_device(struct ccp_device *ccp); 60863b94509STom Lendacky 60981422badSGary R Hook extern void ccp_log_error(struct ccp_device *, int); 61081422badSGary R Hook 611ea0375afSGary R Hook struct ccp_device *ccp_alloc_struct(struct device *dev); 612ea0375afSGary R Hook bool ccp_queues_suspended(struct ccp_device *ccp); 613ea0375afSGary R Hook int ccp_cmd_queue_thread(void *data); 6148256e683SGary R Hook int ccp_trng_read(struct hwrng *rng, void *data, size_t max, bool wait); 61563b94509STom Lendacky 61663b94509STom Lendacky int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd); 61763b94509STom Lendacky 618084935b2SGary R Hook int ccp_register_rng(struct ccp_device *ccp); 619084935b2SGary R Hook void ccp_unregister_rng(struct ccp_device *ccp); 62058ea8abfSGary R Hook int ccp_dmaengine_register(struct ccp_device *ccp); 62158ea8abfSGary R Hook void ccp_dmaengine_unregister(struct ccp_device *ccp); 62258ea8abfSGary R Hook 62358a690b7SGary R Hook /* Structure for computation functions that are device-specific */ 62458a690b7SGary R Hook struct ccp_actions { 62558a690b7SGary R Hook int (*aes)(struct ccp_op *); 62658a690b7SGary R Hook int (*xts_aes)(struct ccp_op *); 62758a690b7SGary R Hook int (*sha)(struct ccp_op *); 62858a690b7SGary R Hook int (*rsa)(struct ccp_op *); 62958a690b7SGary R Hook int (*passthru)(struct ccp_op *); 63058a690b7SGary R Hook int (*ecc)(struct ccp_op *); 63158a690b7SGary R Hook u32 (*sballoc)(struct ccp_cmd_queue *, unsigned int); 63258a690b7SGary R Hook void (*sbfree)(struct ccp_cmd_queue *, unsigned int, 63358a690b7SGary R Hook unsigned int); 634bb4e89b3SGary R Hook unsigned int (*get_free_slots)(struct ccp_cmd_queue *); 63558a690b7SGary R Hook int (*init)(struct ccp_device *); 63658a690b7SGary R Hook void (*destroy)(struct ccp_device *); 63758a690b7SGary R Hook irqreturn_t (*irqhandler)(int, void *); 63858a690b7SGary R Hook }; 63958a690b7SGary R Hook 64058a690b7SGary R Hook /* Structure to hold CCP version-specific values */ 64158a690b7SGary R Hook struct ccp_vdata { 6424b394a23SGary R Hook const unsigned int version; 643*efc989fcSGary R Hook const unsigned int dma_chan_attr; 6444b394a23SGary R Hook void (*setup)(struct ccp_device *); 64558a690b7SGary R Hook const struct ccp_actions *perform; 64658a690b7SGary R Hook const unsigned int bar; 64758a690b7SGary R Hook const unsigned int offset; 64858a690b7SGary R Hook }; 64958a690b7SGary R Hook 6509ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv3; 6519ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv5a; 6529ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv5b; 65358a690b7SGary R Hook 65463b94509STom Lendacky #endif 655