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 30*720419f0SBrijesh Singh #include "sp-dev.h" 31*720419f0SBrijesh Singh 32553d2374SGary R Hook #define MAX_CCP_NAME_LEN 16 3363b94509STom Lendacky #define MAX_DMAPOOL_NAME_LEN 32 3463b94509STom Lendacky 3563b94509STom Lendacky #define MAX_HW_QUEUES 5 3663b94509STom Lendacky #define MAX_CMD_QLEN 100 3763b94509STom Lendacky 3863b94509STom Lendacky #define TRNG_RETRIES 10 3963b94509STom Lendacky 40126ae9adSTom Lendacky #define CACHE_NONE 0x00 41c4f4b325STom Lendacky #define CACHE_WB_NO_ALLOC 0xb7 42c4f4b325STom Lendacky 4363b94509STom Lendacky /****** Register Mappings ******/ 4463b94509STom Lendacky #define Q_MASK_REG 0x000 4563b94509STom Lendacky #define TRNG_OUT_REG 0x00c 4663b94509STom Lendacky #define IRQ_MASK_REG 0x040 4763b94509STom Lendacky #define IRQ_STATUS_REG 0x200 4863b94509STom Lendacky 4963b94509STom Lendacky #define DEL_CMD_Q_JOB 0x124 5063b94509STom Lendacky #define DEL_Q_ACTIVE 0x00000200 5163b94509STom Lendacky #define DEL_Q_ID_SHIFT 6 5263b94509STom Lendacky 5363b94509STom Lendacky #define CMD_REQ0 0x180 5463b94509STom Lendacky #define CMD_REQ_INCR 0x04 5563b94509STom Lendacky 5663b94509STom Lendacky #define CMD_Q_STATUS_BASE 0x210 5763b94509STom Lendacky #define CMD_Q_INT_STATUS_BASE 0x214 5863b94509STom Lendacky #define CMD_Q_STATUS_INCR 0x20 5963b94509STom Lendacky 60c4f4b325STom Lendacky #define CMD_Q_CACHE_BASE 0x228 6163b94509STom Lendacky #define CMD_Q_CACHE_INC 0x20 6263b94509STom Lendacky 638db88467STom Lendacky #define CMD_Q_ERROR(__qs) ((__qs) & 0x0000003f) 648db88467STom Lendacky #define CMD_Q_DEPTH(__qs) (((__qs) >> 12) & 0x0000000f) 6563b94509STom Lendacky 664b394a23SGary R Hook /* ------------------------ CCP Version 5 Specifics ------------------------ */ 674b394a23SGary R Hook #define CMD5_QUEUE_MASK_OFFSET 0x00 68e14e7d12SGary R Hook #define CMD5_QUEUE_PRIO_OFFSET 0x04 694b394a23SGary R Hook #define CMD5_REQID_CONFIG_OFFSET 0x08 70e14e7d12SGary R Hook #define CMD5_CMD_TIMEOUT_OFFSET 0x10 714b394a23SGary R Hook #define LSB_PUBLIC_MASK_LO_OFFSET 0x18 724b394a23SGary R Hook #define LSB_PUBLIC_MASK_HI_OFFSET 0x1C 734b394a23SGary R Hook #define LSB_PRIVATE_MASK_LO_OFFSET 0x20 744b394a23SGary R Hook #define LSB_PRIVATE_MASK_HI_OFFSET 0x24 753cdbe346SGary R Hook #define CMD5_PSP_CCP_VERSION 0x100 764b394a23SGary R Hook 774b394a23SGary R Hook #define CMD5_Q_CONTROL_BASE 0x0000 784b394a23SGary R Hook #define CMD5_Q_TAIL_LO_BASE 0x0004 794b394a23SGary R Hook #define CMD5_Q_HEAD_LO_BASE 0x0008 804b394a23SGary R Hook #define CMD5_Q_INT_ENABLE_BASE 0x000C 814b394a23SGary R Hook #define CMD5_Q_INTERRUPT_STATUS_BASE 0x0010 824b394a23SGary R Hook 834b394a23SGary R Hook #define CMD5_Q_STATUS_BASE 0x0100 844b394a23SGary R Hook #define CMD5_Q_INT_STATUS_BASE 0x0104 854b394a23SGary R Hook #define CMD5_Q_DMA_STATUS_BASE 0x0108 864b394a23SGary R Hook #define CMD5_Q_DMA_READ_STATUS_BASE 0x010C 874b394a23SGary R Hook #define CMD5_Q_DMA_WRITE_STATUS_BASE 0x0110 884b394a23SGary R Hook #define CMD5_Q_ABORT_BASE 0x0114 894b394a23SGary R Hook #define CMD5_Q_AX_CACHE_BASE 0x0118 904b394a23SGary R Hook 91e14e7d12SGary R Hook #define CMD5_CONFIG_0_OFFSET 0x6000 92e14e7d12SGary R Hook #define CMD5_TRNG_CTL_OFFSET 0x6008 93e14e7d12SGary R Hook #define CMD5_AES_MASK_OFFSET 0x6010 94e14e7d12SGary R Hook #define CMD5_CLK_GATE_CTL_OFFSET 0x603C 95e14e7d12SGary R Hook 964b394a23SGary R Hook /* Address offset between two virtual queue registers */ 974b394a23SGary R Hook #define CMD5_Q_STATUS_INCR 0x1000 984b394a23SGary R Hook 994b394a23SGary R Hook /* Bit masks */ 1004b394a23SGary R Hook #define CMD5_Q_RUN 0x1 1014b394a23SGary R Hook #define CMD5_Q_HALT 0x2 1024b394a23SGary R Hook #define CMD5_Q_MEM_LOCATION 0x4 1034b394a23SGary R Hook #define CMD5_Q_SIZE 0x1F 1044b394a23SGary R Hook #define CMD5_Q_SHIFT 3 1054b394a23SGary R Hook #define COMMANDS_PER_QUEUE 16 1064b394a23SGary R Hook #define QUEUE_SIZE_VAL ((ffs(COMMANDS_PER_QUEUE) - 2) & \ 1074b394a23SGary R Hook CMD5_Q_SIZE) 1084b394a23SGary R Hook #define Q_PTR_MASK (2 << (QUEUE_SIZE_VAL + 5) - 1) 1094b394a23SGary R Hook #define Q_DESC_SIZE sizeof(struct ccp5_desc) 1104b394a23SGary R Hook #define Q_SIZE(n) (COMMANDS_PER_QUEUE*(n)) 1114b394a23SGary R Hook 1124b394a23SGary R Hook #define INT_COMPLETION 0x1 1134b394a23SGary R Hook #define INT_ERROR 0x2 1144b394a23SGary R Hook #define INT_QUEUE_STOPPED 0x4 11556467cb1SGary R Hook #define INT_EMPTY_QUEUE 0x8 11656467cb1SGary R Hook #define SUPPORTED_INTERRUPTS (INT_COMPLETION | INT_ERROR) 1174b394a23SGary R Hook 1184b394a23SGary R Hook #define LSB_REGION_WIDTH 5 1194b394a23SGary R Hook #define MAX_LSB_CNT 8 1204b394a23SGary R Hook 1214b394a23SGary R Hook #define LSB_SIZE 16 1224b394a23SGary R Hook #define LSB_ITEM_SIZE 32 1234b394a23SGary R Hook #define PLSB_MAP_SIZE (LSB_SIZE) 1244b394a23SGary R Hook #define SLSB_MAP_SIZE (MAX_LSB_CNT * LSB_SIZE) 1254b394a23SGary R Hook 1264b394a23SGary R Hook #define LSB_ENTRY_NUMBER(LSB_ADDR) (LSB_ADDR / LSB_ITEM_SIZE) 1274b394a23SGary R Hook 1284b394a23SGary R Hook /* ------------------------ CCP Version 3 Specifics ------------------------ */ 12963b94509STom Lendacky #define REQ0_WAIT_FOR_WRITE 0x00000004 13063b94509STom Lendacky #define REQ0_INT_ON_COMPLETE 0x00000002 13163b94509STom Lendacky #define REQ0_STOP_ON_COMPLETE 0x00000001 13263b94509STom Lendacky 13363b94509STom Lendacky #define REQ0_CMD_Q_SHIFT 9 13463b94509STom Lendacky #define REQ0_JOBID_SHIFT 3 13563b94509STom Lendacky 13663b94509STom Lendacky /****** REQ1 Related Values ******/ 13763b94509STom Lendacky #define REQ1_PROTECT_SHIFT 27 13863b94509STom Lendacky #define REQ1_ENGINE_SHIFT 23 13963b94509STom Lendacky #define REQ1_KEY_KSB_SHIFT 2 14063b94509STom Lendacky 14163b94509STom Lendacky #define REQ1_EOM 0x00000002 14263b94509STom Lendacky #define REQ1_INIT 0x00000001 14363b94509STom Lendacky 14463b94509STom Lendacky /* AES Related Values */ 14563b94509STom Lendacky #define REQ1_AES_TYPE_SHIFT 21 14663b94509STom Lendacky #define REQ1_AES_MODE_SHIFT 18 14763b94509STom Lendacky #define REQ1_AES_ACTION_SHIFT 17 14863b94509STom Lendacky #define REQ1_AES_CFB_SIZE_SHIFT 10 14963b94509STom Lendacky 15063b94509STom Lendacky /* XTS-AES Related Values */ 15163b94509STom Lendacky #define REQ1_XTS_AES_SIZE_SHIFT 10 15263b94509STom Lendacky 15363b94509STom Lendacky /* SHA Related Values */ 15463b94509STom Lendacky #define REQ1_SHA_TYPE_SHIFT 21 15563b94509STom Lendacky 15663b94509STom Lendacky /* RSA Related Values */ 15763b94509STom Lendacky #define REQ1_RSA_MOD_SIZE_SHIFT 10 15863b94509STom Lendacky 15963b94509STom Lendacky /* Pass-Through Related Values */ 16063b94509STom Lendacky #define REQ1_PT_BW_SHIFT 12 16163b94509STom Lendacky #define REQ1_PT_BS_SHIFT 10 16263b94509STom Lendacky 16363b94509STom Lendacky /* ECC Related Values */ 16463b94509STom Lendacky #define REQ1_ECC_AFFINE_CONVERT 0x00200000 16563b94509STom Lendacky #define REQ1_ECC_FUNCTION_SHIFT 18 16663b94509STom Lendacky 16763b94509STom Lendacky /****** REQ4 Related Values ******/ 16863b94509STom Lendacky #define REQ4_KSB_SHIFT 18 16963b94509STom Lendacky #define REQ4_MEMTYPE_SHIFT 16 17063b94509STom Lendacky 17163b94509STom Lendacky /****** REQ6 Related Values ******/ 17263b94509STom Lendacky #define REQ6_MEMTYPE_SHIFT 16 17363b94509STom Lendacky 17463b94509STom Lendacky /****** Key Storage Block ******/ 17563b94509STom Lendacky #define KSB_START 77 17663b94509STom Lendacky #define KSB_END 127 17763b94509STom Lendacky #define KSB_COUNT (KSB_END - KSB_START + 1) 178956ee21aSGary R Hook #define CCP_SB_BITS 256 17963b94509STom Lendacky 18063b94509STom Lendacky #define CCP_JOBID_MASK 0x0000003f 18163b94509STom Lendacky 1824b394a23SGary R Hook /* ------------------------ General CCP Defines ------------------------ */ 1834b394a23SGary R Hook 184efc989fcSGary R Hook #define CCP_DMA_DFLT 0x0 185efc989fcSGary R Hook #define CCP_DMA_PRIV 0x1 186efc989fcSGary R Hook #define CCP_DMA_PUB 0x2 187efc989fcSGary R Hook 18863b94509STom Lendacky #define CCP_DMAPOOL_MAX_SIZE 64 1898db88467STom Lendacky #define CCP_DMAPOOL_ALIGN BIT(5) 19063b94509STom Lendacky 19163b94509STom Lendacky #define CCP_REVERSE_BUF_SIZE 64 19263b94509STom Lendacky 193956ee21aSGary R Hook #define CCP_AES_KEY_SB_COUNT 1 194956ee21aSGary R Hook #define CCP_AES_CTX_SB_COUNT 1 19563b94509STom Lendacky 196956ee21aSGary R Hook #define CCP_XTS_AES_KEY_SB_COUNT 1 197956ee21aSGary R Hook #define CCP_XTS_AES_CTX_SB_COUNT 1 19863b94509STom Lendacky 199990672d4SGary R Hook #define CCP_DES3_KEY_SB_COUNT 1 200990672d4SGary R Hook #define CCP_DES3_CTX_SB_COUNT 1 201990672d4SGary R Hook 202956ee21aSGary R Hook #define CCP_SHA_SB_COUNT 1 20363b94509STom Lendacky 20463b94509STom Lendacky #define CCP_RSA_MAX_WIDTH 4096 20563b94509STom Lendacky 20663b94509STom Lendacky #define CCP_PASSTHRU_BLOCKSIZE 256 20763b94509STom Lendacky #define CCP_PASSTHRU_MASKSIZE 32 208956ee21aSGary R Hook #define CCP_PASSTHRU_SB_COUNT 1 20963b94509STom Lendacky 21063b94509STom Lendacky #define CCP_ECC_MODULUS_BYTES 48 /* 384-bits */ 21163b94509STom Lendacky #define CCP_ECC_MAX_OPERANDS 6 21263b94509STom Lendacky #define CCP_ECC_MAX_OUTPUTS 3 21363b94509STom Lendacky #define CCP_ECC_SRC_BUF_SIZE 448 21463b94509STom Lendacky #define CCP_ECC_DST_BUF_SIZE 192 21563b94509STom Lendacky #define CCP_ECC_OPERAND_SIZE 64 21663b94509STom Lendacky #define CCP_ECC_OUTPUT_SIZE 64 21763b94509STom Lendacky #define CCP_ECC_RESULT_OFFSET 60 21863b94509STom Lendacky #define CCP_ECC_RESULT_SUCCESS 0x0001 21963b94509STom Lendacky 220956ee21aSGary R Hook #define CCP_SB_BYTES 32 221956ee21aSGary R Hook 222ea0375afSGary R Hook struct ccp_op; 22363b94509STom Lendacky struct ccp_device; 22463b94509STom Lendacky struct ccp_cmd; 2254b394a23SGary R Hook struct ccp_fns; 22663b94509STom Lendacky 22758ea8abfSGary R Hook struct ccp_dma_cmd { 22858ea8abfSGary R Hook struct list_head entry; 22958ea8abfSGary R Hook 23058ea8abfSGary R Hook struct ccp_cmd ccp_cmd; 23158ea8abfSGary R Hook }; 23258ea8abfSGary R Hook 23358ea8abfSGary R Hook struct ccp_dma_desc { 23458ea8abfSGary R Hook struct list_head entry; 23558ea8abfSGary R Hook 23658ea8abfSGary R Hook struct ccp_device *ccp; 23758ea8abfSGary R Hook 23858ea8abfSGary R Hook struct list_head pending; 23958ea8abfSGary R Hook struct list_head active; 24058ea8abfSGary R Hook 24158ea8abfSGary R Hook enum dma_status status; 24258ea8abfSGary R Hook struct dma_async_tx_descriptor tx_desc; 24358ea8abfSGary R Hook size_t len; 24458ea8abfSGary R Hook }; 24558ea8abfSGary R Hook 24658ea8abfSGary R Hook struct ccp_dma_chan { 24758ea8abfSGary R Hook struct ccp_device *ccp; 24858ea8abfSGary R Hook 24958ea8abfSGary R Hook spinlock_t lock; 250e5da5c56SGary R Hook struct list_head created; 25158ea8abfSGary R Hook struct list_head pending; 25258ea8abfSGary R Hook struct list_head active; 25358ea8abfSGary R Hook struct list_head complete; 25458ea8abfSGary R Hook 25558ea8abfSGary R Hook struct tasklet_struct cleanup_tasklet; 25658ea8abfSGary R Hook 25758ea8abfSGary R Hook enum dma_status status; 25858ea8abfSGary R Hook struct dma_chan dma_chan; 25958ea8abfSGary R Hook }; 26058ea8abfSGary R Hook 26163b94509STom Lendacky struct ccp_cmd_queue { 26263b94509STom Lendacky struct ccp_device *ccp; 26363b94509STom Lendacky 26463b94509STom Lendacky /* Queue identifier */ 26563b94509STom Lendacky u32 id; 26663b94509STom Lendacky 26763b94509STom Lendacky /* Queue dma pool */ 26863b94509STom Lendacky struct dma_pool *dma_pool; 26963b94509STom Lendacky 2704b394a23SGary R Hook /* Queue base address (not neccessarily aligned)*/ 2714b394a23SGary R Hook struct ccp5_desc *qbase; 2724b394a23SGary R Hook 2734b394a23SGary R Hook /* Aligned queue start address (per requirement) */ 2744b394a23SGary R Hook struct mutex q_mutex ____cacheline_aligned; 2754b394a23SGary R Hook unsigned int qidx; 2764b394a23SGary R Hook 2774b394a23SGary R Hook /* Version 5 has different requirements for queue memory */ 2784b394a23SGary R Hook unsigned int qsize; 2794b394a23SGary R Hook dma_addr_t qbase_dma; 2804b394a23SGary R Hook dma_addr_t qdma_tail; 2814b394a23SGary R Hook 282956ee21aSGary R Hook /* Per-queue reserved storage block(s) */ 283956ee21aSGary R Hook u32 sb_key; 284956ee21aSGary R Hook u32 sb_ctx; 28563b94509STom Lendacky 2864b394a23SGary R Hook /* Bitmap of LSBs that can be accessed by this queue */ 2874b394a23SGary R Hook DECLARE_BITMAP(lsbmask, MAX_LSB_CNT); 2884b394a23SGary R Hook /* Private LSB that is assigned to this queue, or -1 if none. 2894b394a23SGary R Hook * Bitmap for my private LSB, unused otherwise 2904b394a23SGary R Hook */ 2913cf79968SGary R Hook int lsb; 2924b394a23SGary R Hook DECLARE_BITMAP(lsbmap, PLSB_MAP_SIZE); 2934b394a23SGary R Hook 29463b94509STom Lendacky /* Queue processing thread */ 29563b94509STom Lendacky struct task_struct *kthread; 29663b94509STom Lendacky unsigned int active; 29763b94509STom Lendacky unsigned int suspended; 29863b94509STom Lendacky 29963b94509STom Lendacky /* Number of free command slots available */ 30063b94509STom Lendacky unsigned int free_slots; 30163b94509STom Lendacky 30263b94509STom Lendacky /* Interrupt masks */ 30363b94509STom Lendacky u32 int_ok; 30463b94509STom Lendacky u32 int_err; 30563b94509STom Lendacky 30663b94509STom Lendacky /* Register addresses for queue */ 3074b394a23SGary R Hook void __iomem *reg_control; 3084b394a23SGary R Hook void __iomem *reg_tail_lo; 3094b394a23SGary R Hook void __iomem *reg_head_lo; 3104b394a23SGary R Hook void __iomem *reg_int_enable; 3114b394a23SGary R Hook void __iomem *reg_interrupt_status; 31263b94509STom Lendacky void __iomem *reg_status; 31363b94509STom Lendacky void __iomem *reg_int_status; 3144b394a23SGary R Hook void __iomem *reg_dma_status; 3154b394a23SGary R Hook void __iomem *reg_dma_read_status; 3164b394a23SGary R Hook void __iomem *reg_dma_write_status; 3174b394a23SGary R Hook u32 qcontrol; /* Cached control register */ 31863b94509STom Lendacky 31963b94509STom Lendacky /* Status values from job */ 32063b94509STom Lendacky u32 int_status; 32163b94509STom Lendacky u32 q_status; 32263b94509STom Lendacky u32 q_int_status; 32363b94509STom Lendacky u32 cmd_error; 32463b94509STom Lendacky 32563b94509STom Lendacky /* Interrupt wait queue */ 32663b94509STom Lendacky wait_queue_head_t int_queue; 32763b94509STom Lendacky unsigned int int_rcvd; 3283cdbe346SGary R Hook 3293cdbe346SGary R Hook /* Per-queue Statistics */ 3303cdbe346SGary R Hook unsigned long total_ops; 3313cdbe346SGary R Hook unsigned long total_aes_ops; 3323cdbe346SGary R Hook unsigned long total_xts_aes_ops; 3333cdbe346SGary R Hook unsigned long total_3des_ops; 3343cdbe346SGary R Hook unsigned long total_sha_ops; 3353cdbe346SGary R Hook unsigned long total_rsa_ops; 3363cdbe346SGary R Hook unsigned long total_pt_ops; 3373cdbe346SGary R Hook unsigned long total_ecc_ops; 33863b94509STom Lendacky } ____cacheline_aligned; 33963b94509STom Lendacky 34063b94509STom Lendacky struct ccp_device { 341553d2374SGary R Hook struct list_head entry; 342553d2374SGary R Hook 343c7019c4dSGary R Hook struct ccp_vdata *vdata; 344553d2374SGary R Hook unsigned int ord; 345553d2374SGary R Hook char name[MAX_CCP_NAME_LEN]; 346553d2374SGary R Hook char rngname[MAX_CCP_NAME_LEN]; 347553d2374SGary R Hook 34863b94509STom Lendacky struct device *dev; 349*720419f0SBrijesh Singh struct sp_device *sp; 35063b94509STom Lendacky 351fa242e80SGary R Hook /* Bus specific device information 35263b94509STom Lendacky */ 35363b94509STom Lendacky void *dev_specific; 35463b94509STom Lendacky int (*get_irq)(struct ccp_device *ccp); 35563b94509STom Lendacky void (*free_irq)(struct ccp_device *ccp); 3567b537b24SGary R Hook unsigned int qim; 3573d77565bSTom Lendacky unsigned int irq; 3587b537b24SGary R Hook bool use_tasklet; 3597b537b24SGary R Hook struct tasklet_struct irq_tasklet; 36063b94509STom Lendacky 361fa242e80SGary R Hook /* I/O area used for device communication. The register mapping 36263b94509STom Lendacky * starts at an offset into the mapped bar. 36363b94509STom Lendacky * The CMD_REQx registers and the Delete_Cmd_Queue_Job register 36463b94509STom Lendacky * need to be protected while a command queue thread is accessing 36563b94509STom Lendacky * them. 36663b94509STom Lendacky */ 36763b94509STom Lendacky struct mutex req_mutex ____cacheline_aligned; 36863b94509STom Lendacky void __iomem *io_regs; 36963b94509STom Lendacky 370fa242e80SGary R Hook /* Master lists that all cmds are queued on. Because there can be 37163b94509STom Lendacky * more than one CCP command queue that can process a cmd a separate 37263b94509STom Lendacky * backlog list is neeeded so that the backlog completion call 37363b94509STom Lendacky * completes before the cmd is available for execution. 37463b94509STom Lendacky */ 37563b94509STom Lendacky spinlock_t cmd_lock ____cacheline_aligned; 37663b94509STom Lendacky unsigned int cmd_count; 37763b94509STom Lendacky struct list_head cmd; 37863b94509STom Lendacky struct list_head backlog; 37963b94509STom Lendacky 380fa242e80SGary R Hook /* The command queues. These represent the queues available on the 38163b94509STom Lendacky * CCP that are available for processing cmds 38263b94509STom Lendacky */ 38363b94509STom Lendacky struct ccp_cmd_queue cmd_q[MAX_HW_QUEUES]; 38463b94509STom Lendacky unsigned int cmd_q_count; 38563b94509STom Lendacky 386fa242e80SGary R Hook /* Support for the CCP True RNG 38763b94509STom Lendacky */ 38863b94509STom Lendacky struct hwrng hwrng; 38963b94509STom Lendacky unsigned int hwrng_retries; 39063b94509STom Lendacky 391fa242e80SGary R Hook /* Support for the CCP DMA capabilities 39258ea8abfSGary R Hook */ 39358ea8abfSGary R Hook struct dma_device dma_dev; 39458ea8abfSGary R Hook struct ccp_dma_chan *ccp_dma_chan; 39558ea8abfSGary R Hook struct kmem_cache *dma_cmd_cache; 39658ea8abfSGary R Hook struct kmem_cache *dma_desc_cache; 39758ea8abfSGary R Hook 398fa242e80SGary R Hook /* A counter used to generate job-ids for cmds submitted to the CCP 39963b94509STom Lendacky */ 40063b94509STom Lendacky atomic_t current_id ____cacheline_aligned; 40163b94509STom Lendacky 40258a690b7SGary R Hook /* The v3 CCP uses key storage blocks (SB) to maintain context for 40358a690b7SGary R Hook * certain operations. To prevent multiple cmds from using the same 40458a690b7SGary R Hook * SB range a command queue reserves an SB range for the duration of 40558a690b7SGary R Hook * the cmd. Each queue, will however, reserve 2 SB blocks for 40658a690b7SGary R Hook * operations that only require single SB entries (eg. AES context/iv 40758a690b7SGary R Hook * and key) in order to avoid allocation contention. This will reserve 40858a690b7SGary R Hook * at most 10 SB entries, leaving 40 SB entries available for dynamic 40958a690b7SGary R Hook * allocation. 41058a690b7SGary R Hook * 41158a690b7SGary R Hook * The v5 CCP Local Storage Block (LSB) is broken up into 8 41258a690b7SGary R Hook * memrory ranges, each of which can be enabled for access by one 41358a690b7SGary R Hook * or more queues. Device initialization takes this into account, 41458a690b7SGary R Hook * and attempts to assign one region for exclusive use by each 41558a690b7SGary R Hook * available queue; the rest are then aggregated as "public" use. 41658a690b7SGary R Hook * If there are fewer regions than queues, all regions are shared 41758a690b7SGary R Hook * amongst all queues. 41863b94509STom Lendacky */ 419956ee21aSGary R Hook struct mutex sb_mutex ____cacheline_aligned; 420956ee21aSGary R Hook DECLARE_BITMAP(sb, KSB_COUNT); 421956ee21aSGary R Hook wait_queue_head_t sb_queue; 422956ee21aSGary R Hook unsigned int sb_avail; 423956ee21aSGary R Hook unsigned int sb_count; 424956ee21aSGary R Hook u32 sb_start; 42563b94509STom Lendacky 4264b394a23SGary R Hook /* Bitmap of shared LSBs, if any */ 4274b394a23SGary R Hook DECLARE_BITMAP(lsbmap, SLSB_MAP_SIZE); 4284b394a23SGary R Hook 42963b94509STom Lendacky /* Suspend support */ 43063b94509STom Lendacky unsigned int suspending; 43163b94509STom Lendacky wait_queue_head_t suspend_queue; 432126ae9adSTom Lendacky 433126ae9adSTom Lendacky /* DMA caching attribute support */ 434126ae9adSTom Lendacky unsigned int axcache; 4353cdbe346SGary R Hook 4363cdbe346SGary R Hook /* Device Statistics */ 4373cdbe346SGary R Hook unsigned long total_interrupts; 4383cdbe346SGary R Hook 4393cdbe346SGary R Hook /* DebugFS info */ 4403cdbe346SGary R Hook struct dentry *debugfs_instance; 44163b94509STom Lendacky }; 44263b94509STom Lendacky 443ea0375afSGary R Hook enum ccp_memtype { 444ea0375afSGary R Hook CCP_MEMTYPE_SYSTEM = 0, 445956ee21aSGary R Hook CCP_MEMTYPE_SB, 446ea0375afSGary R Hook CCP_MEMTYPE_LOCAL, 447ea0375afSGary R Hook CCP_MEMTYPE__LAST, 448ea0375afSGary R Hook }; 4494b394a23SGary R Hook #define CCP_MEMTYPE_LSB CCP_MEMTYPE_KSB 450ea0375afSGary R Hook 4512d158391SGary R Hook 452ea0375afSGary R Hook struct ccp_dma_info { 453ea0375afSGary R Hook dma_addr_t address; 454ea0375afSGary R Hook unsigned int offset; 455ea0375afSGary R Hook unsigned int length; 456ea0375afSGary R Hook enum dma_data_direction dir; 4572d158391SGary R Hook } __packed __aligned(4); 458ea0375afSGary R Hook 459ea0375afSGary R Hook struct ccp_dm_workarea { 460ea0375afSGary R Hook struct device *dev; 461ea0375afSGary R Hook struct dma_pool *dma_pool; 462ea0375afSGary R Hook 463ea0375afSGary R Hook u8 *address; 464ea0375afSGary R Hook struct ccp_dma_info dma; 4652d158391SGary R Hook unsigned int length; 466ea0375afSGary R Hook }; 467ea0375afSGary R Hook 468ea0375afSGary R Hook struct ccp_sg_workarea { 469ea0375afSGary R Hook struct scatterlist *sg; 470ea0375afSGary R Hook int nents; 4712d158391SGary R Hook unsigned int sg_used; 472ea0375afSGary R Hook 473ea0375afSGary R Hook struct scatterlist *dma_sg; 474ea0375afSGary R Hook struct device *dma_dev; 475ea0375afSGary R Hook unsigned int dma_count; 476ea0375afSGary R Hook enum dma_data_direction dma_dir; 477ea0375afSGary R Hook 478ea0375afSGary R Hook u64 bytes_left; 479ea0375afSGary R Hook }; 480ea0375afSGary R Hook 481ea0375afSGary R Hook struct ccp_data { 482ea0375afSGary R Hook struct ccp_sg_workarea sg_wa; 483ea0375afSGary R Hook struct ccp_dm_workarea dm_wa; 484ea0375afSGary R Hook }; 485ea0375afSGary R Hook 486ea0375afSGary R Hook struct ccp_mem { 487ea0375afSGary R Hook enum ccp_memtype type; 488ea0375afSGary R Hook union { 489ea0375afSGary R Hook struct ccp_dma_info dma; 490956ee21aSGary R Hook u32 sb; 491ea0375afSGary R Hook } u; 492ea0375afSGary R Hook }; 493ea0375afSGary R Hook 494ea0375afSGary R Hook struct ccp_aes_op { 495ea0375afSGary R Hook enum ccp_aes_type type; 496ea0375afSGary R Hook enum ccp_aes_mode mode; 497ea0375afSGary R Hook enum ccp_aes_action action; 498f7cc02b3SGary R Hook unsigned int size; 499ea0375afSGary R Hook }; 500ea0375afSGary R Hook 501ea0375afSGary R Hook struct ccp_xts_aes_op { 502ea0375afSGary R Hook enum ccp_aes_action action; 503ea0375afSGary R Hook enum ccp_xts_aes_unit_size unit_size; 504ea0375afSGary R Hook }; 505ea0375afSGary R Hook 506990672d4SGary R Hook struct ccp_des3_op { 507990672d4SGary R Hook enum ccp_des3_type type; 508990672d4SGary R Hook enum ccp_des3_mode mode; 509990672d4SGary R Hook enum ccp_des3_action action; 510990672d4SGary R Hook }; 511990672d4SGary R Hook 512ea0375afSGary R Hook struct ccp_sha_op { 513ea0375afSGary R Hook enum ccp_sha_type type; 514ea0375afSGary R Hook u64 msg_bits; 515ea0375afSGary R Hook }; 516ea0375afSGary R Hook 517ea0375afSGary R Hook struct ccp_rsa_op { 518ea0375afSGary R Hook u32 mod_size; 519ea0375afSGary R Hook u32 input_len; 520ea0375afSGary R Hook }; 521ea0375afSGary R Hook 522ea0375afSGary R Hook struct ccp_passthru_op { 523ea0375afSGary R Hook enum ccp_passthru_bitwise bit_mod; 524ea0375afSGary R Hook enum ccp_passthru_byteswap byte_swap; 525ea0375afSGary R Hook }; 526ea0375afSGary R Hook 527ea0375afSGary R Hook struct ccp_ecc_op { 528ea0375afSGary R Hook enum ccp_ecc_function function; 529ea0375afSGary R Hook }; 530ea0375afSGary R Hook 531ea0375afSGary R Hook struct ccp_op { 532ea0375afSGary R Hook struct ccp_cmd_queue *cmd_q; 533ea0375afSGary R Hook 534ea0375afSGary R Hook u32 jobid; 535ea0375afSGary R Hook u32 ioc; 536ea0375afSGary R Hook u32 soc; 537956ee21aSGary R Hook u32 sb_key; 538956ee21aSGary R Hook u32 sb_ctx; 539ea0375afSGary R Hook u32 init; 540ea0375afSGary R Hook u32 eom; 541ea0375afSGary R Hook 542ea0375afSGary R Hook struct ccp_mem src; 543ea0375afSGary R Hook struct ccp_mem dst; 5444b394a23SGary R Hook struct ccp_mem exp; 545ea0375afSGary R Hook 546ea0375afSGary R Hook union { 547ea0375afSGary R Hook struct ccp_aes_op aes; 548ea0375afSGary R Hook struct ccp_xts_aes_op xts; 549990672d4SGary R Hook struct ccp_des3_op des3; 550ea0375afSGary R Hook struct ccp_sha_op sha; 551ea0375afSGary R Hook struct ccp_rsa_op rsa; 552ea0375afSGary R Hook struct ccp_passthru_op passthru; 553ea0375afSGary R Hook struct ccp_ecc_op ecc; 554ea0375afSGary R Hook } u; 555ea0375afSGary R Hook }; 556ea0375afSGary R Hook 557ea0375afSGary R Hook static inline u32 ccp_addr_lo(struct ccp_dma_info *info) 558ea0375afSGary R Hook { 559ea0375afSGary R Hook return lower_32_bits(info->address + info->offset); 560ea0375afSGary R Hook } 561ea0375afSGary R Hook 562ea0375afSGary R Hook static inline u32 ccp_addr_hi(struct ccp_dma_info *info) 563ea0375afSGary R Hook { 564ea0375afSGary R Hook return upper_32_bits(info->address + info->offset) & 0x0000ffff; 565ea0375afSGary R Hook } 566ea0375afSGary R Hook 5674b394a23SGary R Hook /** 5684b394a23SGary R Hook * descriptor for version 5 CPP commands 5694b394a23SGary R Hook * 8 32-bit words: 5704b394a23SGary R Hook * word 0: function; engine; control bits 5714b394a23SGary R Hook * word 1: length of source data 5724b394a23SGary R Hook * word 2: low 32 bits of source pointer 5734b394a23SGary R Hook * word 3: upper 16 bits of source pointer; source memory type 5744b394a23SGary R Hook * word 4: low 32 bits of destination pointer 5754b394a23SGary R Hook * word 5: upper 16 bits of destination pointer; destination memory type 5764b394a23SGary R Hook * word 6: low 32 bits of key pointer 5774b394a23SGary R Hook * word 7: upper 16 bits of key pointer; key memory type 5784b394a23SGary R Hook */ 5794b394a23SGary R Hook struct dword0 { 580fdd2cf9dSGary R Hook unsigned int soc:1; 581fdd2cf9dSGary R Hook unsigned int ioc:1; 582fdd2cf9dSGary R Hook unsigned int rsvd1:1; 583fdd2cf9dSGary R Hook unsigned int init:1; 584fdd2cf9dSGary R Hook unsigned int eom:1; /* AES/SHA only */ 585fdd2cf9dSGary R Hook unsigned int function:15; 586fdd2cf9dSGary R Hook unsigned int engine:4; 587fdd2cf9dSGary R Hook unsigned int prot:1; 588fdd2cf9dSGary R Hook unsigned int rsvd2:7; 5894b394a23SGary R Hook }; 5904b394a23SGary R Hook 5914b394a23SGary R Hook struct dword3 { 592fdd2cf9dSGary R Hook unsigned int src_hi:16; 593fdd2cf9dSGary R Hook unsigned int src_mem:2; 594fdd2cf9dSGary R Hook unsigned int lsb_cxt_id:8; 595fdd2cf9dSGary R Hook unsigned int rsvd1:5; 596fdd2cf9dSGary R Hook unsigned int fixed:1; 5974b394a23SGary R Hook }; 5984b394a23SGary R Hook 5994b394a23SGary R Hook union dword4 { 6004b394a23SGary R Hook __le32 dst_lo; /* NON-SHA */ 6014b394a23SGary R Hook __le32 sha_len_lo; /* SHA */ 6024b394a23SGary R Hook }; 6034b394a23SGary R Hook 6044b394a23SGary R Hook union dword5 { 6054b394a23SGary R Hook struct { 606fdd2cf9dSGary R Hook unsigned int dst_hi:16; 607fdd2cf9dSGary R Hook unsigned int dst_mem:2; 608fdd2cf9dSGary R Hook unsigned int rsvd1:13; 609fdd2cf9dSGary R Hook unsigned int fixed:1; 6104b394a23SGary R Hook } fields; 6114b394a23SGary R Hook __le32 sha_len_hi; 6124b394a23SGary R Hook }; 6134b394a23SGary R Hook 6144b394a23SGary R Hook struct dword7 { 615fdd2cf9dSGary R Hook unsigned int key_hi:16; 616fdd2cf9dSGary R Hook unsigned int key_mem:2; 617fdd2cf9dSGary R Hook unsigned int rsvd1:14; 6184b394a23SGary R Hook }; 6194b394a23SGary R Hook 6204b394a23SGary R Hook struct ccp5_desc { 6214b394a23SGary R Hook struct dword0 dw0; 6224b394a23SGary R Hook __le32 length; 6234b394a23SGary R Hook __le32 src_lo; 6244b394a23SGary R Hook struct dword3 dw3; 6254b394a23SGary R Hook union dword4 dw4; 6264b394a23SGary R Hook union dword5 dw5; 6274b394a23SGary R Hook __le32 key_lo; 6284b394a23SGary R Hook struct dword7 dw7; 6294b394a23SGary R Hook }; 6304b394a23SGary R Hook 63163b94509STom Lendacky int ccp_pci_init(void); 63263b94509STom Lendacky void ccp_pci_exit(void); 63363b94509STom Lendacky 634c4f4b325STom Lendacky int ccp_platform_init(void); 635c4f4b325STom Lendacky void ccp_platform_exit(void); 636c4f4b325STom Lendacky 637ea0375afSGary R Hook void ccp_add_device(struct ccp_device *ccp); 638ea0375afSGary R Hook void ccp_del_device(struct ccp_device *ccp); 63963b94509STom Lendacky 64081422badSGary R Hook extern void ccp_log_error(struct ccp_device *, int); 64181422badSGary R Hook 642*720419f0SBrijesh Singh struct ccp_device *ccp_alloc_struct(struct sp_device *sp); 643ea0375afSGary R Hook bool ccp_queues_suspended(struct ccp_device *ccp); 644ea0375afSGary R Hook int ccp_cmd_queue_thread(void *data); 6458256e683SGary R Hook int ccp_trng_read(struct hwrng *rng, void *data, size_t max, bool wait); 64663b94509STom Lendacky 64763b94509STom Lendacky int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd); 64863b94509STom Lendacky 649084935b2SGary R Hook int ccp_register_rng(struct ccp_device *ccp); 650084935b2SGary R Hook void ccp_unregister_rng(struct ccp_device *ccp); 65158ea8abfSGary R Hook int ccp_dmaengine_register(struct ccp_device *ccp); 65258ea8abfSGary R Hook void ccp_dmaengine_unregister(struct ccp_device *ccp); 65358ea8abfSGary R Hook 6543cdbe346SGary R Hook void ccp5_debugfs_setup(struct ccp_device *ccp); 6553cdbe346SGary R Hook void ccp5_debugfs_destroy(void); 6563cdbe346SGary R Hook 65758a690b7SGary R Hook /* Structure for computation functions that are device-specific */ 65858a690b7SGary R Hook struct ccp_actions { 65958a690b7SGary R Hook int (*aes)(struct ccp_op *); 66058a690b7SGary R Hook int (*xts_aes)(struct ccp_op *); 661990672d4SGary R Hook int (*des3)(struct ccp_op *); 66258a690b7SGary R Hook int (*sha)(struct ccp_op *); 66358a690b7SGary R Hook int (*rsa)(struct ccp_op *); 66458a690b7SGary R Hook int (*passthru)(struct ccp_op *); 66558a690b7SGary R Hook int (*ecc)(struct ccp_op *); 66658a690b7SGary R Hook u32 (*sballoc)(struct ccp_cmd_queue *, unsigned int); 667990672d4SGary R Hook void (*sbfree)(struct ccp_cmd_queue *, unsigned int, unsigned int); 668bb4e89b3SGary R Hook unsigned int (*get_free_slots)(struct ccp_cmd_queue *); 66958a690b7SGary R Hook int (*init)(struct ccp_device *); 67058a690b7SGary R Hook void (*destroy)(struct ccp_device *); 67158a690b7SGary R Hook irqreturn_t (*irqhandler)(int, void *); 67258a690b7SGary R Hook }; 67358a690b7SGary R Hook 674970e8303SBrijesh Singh extern const struct ccp_vdata ccpv3_platform; 6759ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv3; 6769ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv5a; 6779ddb9dc6SGary R Hook extern const struct ccp_vdata ccpv5b; 67858a690b7SGary R Hook 67963b94509STom Lendacky #endif 680