/* * zcrypt 2.1.0 * * Copyright IBM Corp. 2001, 2012 * Author(s): Robert Burroughs * Eric Rossman (edrossma@us.ibm.com) * * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) * Major cleanup & driver split: Martin Schwidefsky * Ralph Wuerthner * MSGTYPE restruct: Holger Dengler * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define KMSG_COMPONENT "zcrypt" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include #include #include #include #include #include #include #include "ap_bus.h" #include "zcrypt_api.h" #include "zcrypt_error.h" #include "zcrypt_msgtype6.h" #include "zcrypt_cca_key.h" #define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */ #define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */ #define CEIL4(x) ((((x)+3)/4)*4) struct response_type { struct completion work; int type; }; #define PCIXCC_RESPONSE_TYPE_ICA 0 #define PCIXCC_RESPONSE_TYPE_XCRB 1 #define PCIXCC_RESPONSE_TYPE_EP11 2 MODULE_AUTHOR("IBM Corporation"); MODULE_DESCRIPTION("Cryptographic Coprocessor (message type 6), " \ "Copyright IBM Corp. 2001, 2012"); MODULE_LICENSE("GPL"); static void zcrypt_msgtype6_receive(struct ap_device *, struct ap_message *, struct ap_message *); /** * CPRB * Note that all shorts, ints and longs are little-endian. * All pointer fields are 32-bits long, and mean nothing * * A request CPRB is followed by a request_parameter_block. * * The request (or reply) parameter block is organized thus: * function code * VUD block * key block */ struct CPRB { unsigned short cprb_len; /* CPRB length */ unsigned char cprb_ver_id; /* CPRB version id. */ unsigned char pad_000; /* Alignment pad byte. */ unsigned char srpi_rtcode[4]; /* SRPI return code LELONG */ unsigned char srpi_verb; /* SRPI verb type */ unsigned char flags; /* flags */ unsigned char func_id[2]; /* function id */ unsigned char checkpoint_flag; /* */ unsigned char resv2; /* reserved */ unsigned short req_parml; /* request parameter buffer */ /* length 16-bit little endian */ unsigned char req_parmp[4]; /* request parameter buffer * * pointer (means nothing: the * * parameter buffer follows * * the CPRB). */ unsigned char req_datal[4]; /* request data buffer */ /* length ULELONG */ unsigned char req_datap[4]; /* request data buffer */ /* pointer */ unsigned short rpl_parml; /* reply parameter buffer */ /* length 16-bit little endian */ unsigned char pad_001[2]; /* Alignment pad bytes. ULESHORT */ unsigned char rpl_parmp[4]; /* reply parameter buffer * * pointer (means nothing: the * * parameter buffer follows * * the CPRB). */ unsigned char rpl_datal[4]; /* reply data buffer len ULELONG */ unsigned char rpl_datap[4]; /* reply data buffer */ /* pointer */ unsigned short ccp_rscode; /* server reason code ULESHORT */ unsigned short ccp_rtcode; /* server return code ULESHORT */ unsigned char repd_parml[2]; /* replied parameter len ULESHORT*/ unsigned char mac_data_len[2]; /* Mac Data Length ULESHORT */ unsigned char repd_datal[4]; /* replied data length ULELONG */ unsigned char req_pc[2]; /* PC identifier */ unsigned char res_origin[8]; /* resource origin */ unsigned char mac_value[8]; /* Mac Value */ unsigned char logon_id[8]; /* Logon Identifier */ unsigned char usage_domain[2]; /* cdx */ unsigned char resv3[18]; /* reserved for requestor */ unsigned short svr_namel; /* server name length ULESHORT */ unsigned char svr_name[8]; /* server name */ } __packed; struct function_and_rules_block { unsigned char function_code[2]; unsigned short ulen; unsigned char only_rule[8]; } __packed; /** * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C * card in a type6 message. The 3 fields that must be filled in at execution * time are req_parml, rpl_parml and usage_domain. * Everything about this interface is ascii/big-endian, since the * device does *not* have 'Intel inside'. * * The CPRBX is followed immediately by the parm block. * The parm block contains: * - function code ('PD' 0x5044 or 'PK' 0x504B) * - rule block (one of:) * + 0x000A 'PKCS-1.2' (MCL2 'PD') * + 0x000A 'ZERO-PAD' (MCL2 'PK') * + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD') * + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK') * - VUD block */ static struct CPRBX static_cprbx = { .cprb_len = 0x00DC, .cprb_ver_id = 0x02, .func_id = {0x54, 0x32}, }; /** * Convert a ICAMEX message to a type6 MEX message. * * @zdev: crypto device pointer * @ap_msg: pointer to AP message * @mex: pointer to user input data * * Returns 0 on success or -EFAULT. */ static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, struct ap_message *ap_msg, struct ica_rsa_modexpo *mex) { static struct type6_hdr static_type6_hdrX = { .type = 0x06, .offset1 = 0x00000058, .agent_id = {'C', 'A',}, .function_code = {'P', 'K'}, }; static struct function_and_rules_block static_pke_fnr = { .function_code = {'P', 'K'}, .ulen = 10, .only_rule = {'M', 'R', 'P', ' ', ' ', ' ', ' ', ' '} }; static struct function_and_rules_block static_pke_fnr_MCL2 = { .function_code = {'P', 'K'}, .ulen = 10, .only_rule = {'Z', 'E', 'R', 'O', '-', 'P', 'A', 'D'} }; struct { struct type6_hdr hdr; struct CPRBX cprbx; struct function_and_rules_block fr; unsigned short length; char text[0]; } __packed * msg = ap_msg->message; int size; /* VUD.ciphertext */ msg->length = mex->inputdatalength + 2; if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength)) return -EFAULT; /* Set up key which is located after the variable length text. */ size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1); if (size < 0) return size; size += sizeof(*msg) + mex->inputdatalength; /* message header, cprbx and f&r */ msg->hdr = static_type6_hdrX; msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); msg->cprbx = static_cprbx; msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? static_pke_fnr_MCL2 : static_pke_fnr; msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx); ap_msg->length = size; return 0; } /** * Convert a ICACRT message to a type6 CRT message. * * @zdev: crypto device pointer * @ap_msg: pointer to AP message * @crt: pointer to user input data * * Returns 0 on success or -EFAULT. */ static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, struct ap_message *ap_msg, struct ica_rsa_modexpo_crt *crt) { static struct type6_hdr static_type6_hdrX = { .type = 0x06, .offset1 = 0x00000058, .agent_id = {'C', 'A',}, .function_code = {'P', 'D'}, }; static struct function_and_rules_block static_pkd_fnr = { .function_code = {'P', 'D'}, .ulen = 10, .only_rule = {'Z', 'E', 'R', 'O', '-', 'P', 'A', 'D'} }; static struct function_and_rules_block static_pkd_fnr_MCL2 = { .function_code = {'P', 'D'}, .ulen = 10, .only_rule = {'P', 'K', 'C', 'S', '-', '1', '.', '2'} }; struct { struct type6_hdr hdr; struct CPRBX cprbx; struct function_and_rules_block fr; unsigned short length; char text[0]; } __packed * msg = ap_msg->message; int size; /* VUD.ciphertext */ msg->length = crt->inputdatalength + 2; if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength)) return -EFAULT; /* Set up key which is located after the variable length text. */ size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1); if (size < 0) return size; size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */ /* message header, cprbx and f&r */ msg->hdr = static_type6_hdrX; msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); msg->cprbx = static_cprbx; msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = size - sizeof(msg->hdr) - sizeof(msg->cprbx); msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? static_pkd_fnr_MCL2 : static_pkd_fnr; ap_msg->length = size; return 0; } /** * Convert a XCRB message to a type6 CPRB message. * * @zdev: crypto device pointer * @ap_msg: pointer to AP message * @xcRB: pointer to user input data * * Returns 0 on success or -EFAULT, -EINVAL. */ struct type86_fmt2_msg { struct type86_hdr hdr; struct type86_fmt2_ext fmt2; } __packed; static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev, struct ap_message *ap_msg, struct ica_xcRB *xcRB) { static struct type6_hdr static_type6_hdrX = { .type = 0x06, .offset1 = 0x00000058, }; struct { struct type6_hdr hdr; struct CPRBX cprbx; } __packed * msg = ap_msg->message; int rcblen = CEIL4(xcRB->request_control_blk_length); int replylen, req_sumlen, resp_sumlen; char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen; char *function_code; if (CEIL4(xcRB->request_control_blk_length) < xcRB->request_control_blk_length) return -EINVAL; /* overflow after alignment*/ /* length checks */ ap_msg->length = sizeof(struct type6_hdr) + CEIL4(xcRB->request_control_blk_length) + xcRB->request_data_length; if (ap_msg->length > MSGTYPE06_MAX_MSG_SIZE) return -EINVAL; /* Overflow check sum must be greater (or equal) than the largest operand */ req_sumlen = CEIL4(xcRB->request_control_blk_length) + xcRB->request_data_length; if ((CEIL4(xcRB->request_control_blk_length) <= xcRB->request_data_length) ? (req_sumlen < xcRB->request_data_length) : (req_sumlen < CEIL4(xcRB->request_control_blk_length))) { return -EINVAL; } if (CEIL4(xcRB->reply_control_blk_length) < xcRB->reply_control_blk_length) return -EINVAL; /* overflow after alignment*/ replylen = sizeof(struct type86_fmt2_msg) + CEIL4(xcRB->reply_control_blk_length) + xcRB->reply_data_length; if (replylen > MSGTYPE06_MAX_MSG_SIZE) return -EINVAL; /* Overflow check sum must be greater (or equal) than the largest operand */ resp_sumlen = CEIL4(xcRB->reply_control_blk_length) + xcRB->reply_data_length; if ((CEIL4(xcRB->reply_control_blk_length) <= xcRB->reply_data_length) ? (resp_sumlen < xcRB->reply_data_length) : (resp_sumlen < CEIL4(xcRB->reply_control_blk_length))) { return -EINVAL; } /* prepare type6 header */ msg->hdr = static_type6_hdrX; memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID)); msg->hdr.ToCardLen1 = xcRB->request_control_blk_length; if (xcRB->request_data_length) { msg->hdr.offset2 = msg->hdr.offset1 + rcblen; msg->hdr.ToCardLen2 = xcRB->request_data_length; } msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length; msg->hdr.FromCardLen2 = xcRB->reply_data_length; /* prepare CPRB */ if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr, xcRB->request_control_blk_length)) return -EFAULT; if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) > xcRB->request_control_blk_length) return -EINVAL; function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len; memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code)); if (memcmp(function_code, "US", 2) == 0) ap_msg->special = 1; else ap_msg->special = 0; /* copy data block */ if (xcRB->request_data_length && copy_from_user(req_data, xcRB->request_data_address, xcRB->request_data_length)) return -EFAULT; return 0; } static int xcrb_msg_to_type6_ep11cprb_msgx(struct zcrypt_device *zdev, struct ap_message *ap_msg, struct ep11_urb *xcRB) { unsigned int lfmt; static struct type6_hdr static_type6_ep11_hdr = { .type = 0x06, .rqid = {0x00, 0x01}, .function_code = {0x00, 0x00}, .agent_id[0] = 0x58, /* {'X'} */ .agent_id[1] = 0x43, /* {'C'} */ .offset1 = 0x00000058, }; struct { struct type6_hdr hdr; struct ep11_cprb cprbx; unsigned char pld_tag; /* fixed value 0x30 */ unsigned char pld_lenfmt; /* payload length format */ } __packed * msg = ap_msg->message; struct pld_hdr { unsigned char func_tag; /* fixed value 0x4 */ unsigned char func_len; /* fixed value 0x4 */ unsigned int func_val; /* function ID */ unsigned char dom_tag; /* fixed value 0x4 */ unsigned char dom_len; /* fixed value 0x4 */ unsigned int dom_val; /* domain id */ } __packed * payload_hdr; if (CEIL4(xcRB->req_len) < xcRB->req_len) return -EINVAL; /* overflow after alignment*/ /* length checks */ ap_msg->length = sizeof(struct type6_hdr) + xcRB->req_len; if (CEIL4(xcRB->req_len) > MSGTYPE06_MAX_MSG_SIZE - (sizeof(struct type6_hdr))) return -EINVAL; if (CEIL4(xcRB->resp_len) < xcRB->resp_len) return -EINVAL; /* overflow after alignment*/ if (CEIL4(xcRB->resp_len) > MSGTYPE06_MAX_MSG_SIZE - (sizeof(struct type86_fmt2_msg))) return -EINVAL; /* prepare type6 header */ msg->hdr = static_type6_ep11_hdr; msg->hdr.ToCardLen1 = xcRB->req_len; msg->hdr.FromCardLen1 = xcRB->resp_len; /* Import CPRB data from the ioctl input parameter */ if (copy_from_user(&(msg->cprbx.cprb_len), (char __force __user *)xcRB->req, xcRB->req_len)) { return -EFAULT; } /* The target domain field within the cprb body/payload block will be replaced by the usage domain for non-management commands only. Therefore we check the first bit of the 'flags' parameter for management command indication. 0 - non management command 1 - management command */ if (!((msg->cprbx.flags & 0x80) == 0x80)) { msg->cprbx.target_id = (unsigned int) AP_QID_QUEUE(zdev->ap_dev->qid); if ((msg->pld_lenfmt & 0x80) == 0x80) { /*ext.len.fmt 2 or 3*/ switch (msg->pld_lenfmt & 0x03) { case 1: lfmt = 2; break; case 2: lfmt = 3; break; default: return -EINVAL; } } else { lfmt = 1; /* length format #1 */ } payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt); payload_hdr->dom_val = (unsigned int) AP_QID_QUEUE(zdev->ap_dev->qid); } return 0; } /** * Copy results from a type 86 ICA reply message back to user space. * * @zdev: crypto device pointer * @reply: reply AP message. * @data: pointer to user output data * @length: size of user output data * * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. */ struct type86x_reply { struct type86_hdr hdr; struct type86_fmt2_ext fmt2; struct CPRBX cprbx; unsigned char pad[4]; /* 4 byte function code/rules block ? */ unsigned short length; char text[0]; } __packed; struct type86_ep11_reply { struct type86_hdr hdr; struct type86_fmt2_ext fmt2; struct ep11_cprb cprbx; } __packed; static int convert_type86_ica(struct zcrypt_device *zdev, struct ap_message *reply, char __user *outputdata, unsigned int outputdatalength) { static unsigned char static_pad[] = { 0x00, 0x02, 0x1B, 0x7B, 0x5D, 0xB5, 0x75, 0x01, 0x3D, 0xFD, 0x8D, 0xD1, 0xC7, 0x03, 0x2D, 0x09, 0x23, 0x57, 0x89, 0x49, 0xB9, 0x3F, 0xBB, 0x99, 0x41, 0x5B, 0x75, 0x21, 0x7B, 0x9D, 0x3B, 0x6B, 0x51, 0x39, 0xBB, 0x0D, 0x35, 0xB9, 0x89, 0x0F, 0x93, 0xA5, 0x0B, 0x47, 0xF1, 0xD3, 0xBB, 0xCB, 0xF1, 0x9D, 0x23, 0x73, 0x71, 0xFF, 0xF3, 0xF5, 0x45, 0xFB, 0x61, 0x29, 0x23, 0xFD, 0xF1, 0x29, 0x3F, 0x7F, 0x17, 0xB7, 0x1B, 0xA9, 0x19, 0xBD, 0x57, 0xA9, 0xD7, 0x95, 0xA3, 0xCB, 0xED, 0x1D, 0xDB, 0x45, 0x7D, 0x11, 0xD1, 0x51, 0x1B, 0xED, 0x71, 0xE9, 0xB1, 0xD1, 0xAB, 0xAB, 0x21, 0x2B, 0x1B, 0x9F, 0x3B, 0x9F, 0xF7, 0xF7, 0xBD, 0x63, 0xEB, 0xAD, 0xDF, 0xB3, 0x6F, 0x5B, 0xDB, 0x8D, 0xA9, 0x5D, 0xE3, 0x7D, 0x77, 0x49, 0x47, 0xF5, 0xA7, 0xFD, 0xAB, 0x2F, 0x27, 0x35, 0x77, 0xD3, 0x49, 0xC9, 0x09, 0xEB, 0xB1, 0xF9, 0xBF, 0x4B, 0xCB, 0x2B, 0xEB, 0xEB, 0x05, 0xFF, 0x7D, 0xC7, 0x91, 0x8B, 0x09, 0x83, 0xB9, 0xB9, 0x69, 0x33, 0x39, 0x6B, 0x79, 0x75, 0x19, 0xBF, 0xBB, 0x07, 0x1D, 0xBD, 0x29, 0xBF, 0x39, 0x95, 0x93, 0x1D, 0x35, 0xC7, 0xC9, 0x4D, 0xE5, 0x97, 0x0B, 0x43, 0x9B, 0xF1, 0x16, 0x93, 0x03, 0x1F, 0xA5, 0xFB, 0xDB, 0xF3, 0x27, 0x4F, 0x27, 0x61, 0x05, 0x1F, 0xB9, 0x23, 0x2F, 0xC3, 0x81, 0xA9, 0x23, 0x71, 0x55, 0x55, 0xEB, 0xED, 0x41, 0xE5, 0xF3, 0x11, 0xF1, 0x43, 0x69, 0x03, 0xBD, 0x0B, 0x37, 0x0F, 0x51, 0x8F, 0x0B, 0xB5, 0x89, 0x5B, 0x67, 0xA9, 0xD9, 0x4F, 0x01, 0xF9, 0x21, 0x77, 0x37, 0x73, 0x79, 0xC5, 0x7F, 0x51, 0xC1, 0xCF, 0x97, 0xA1, 0x75, 0xAD, 0x35, 0x9D, 0xD3, 0xD3, 0xA7, 0x9D, 0x5D, 0x41, 0x6F, 0x65, 0x1B, 0xCF, 0xA9, 0x87, 0x91, 0x09 }; struct type86x_reply *msg = reply->message; unsigned short service_rc, service_rs; unsigned int reply_len, pad_len; char *data; service_rc = msg->cprbx.ccp_rtcode; if (unlikely(service_rc != 0)) { service_rs = msg->cprbx.ccp_rscode; if (service_rc == 8 && service_rs == 66) return -EINVAL; if (service_rc == 8 && service_rs == 65) return -EINVAL; if (service_rc == 8 && service_rs == 770) return -EINVAL; if (service_rc == 8 && service_rs == 783) { zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; return -EAGAIN; } if (service_rc == 12 && service_rs == 769) return -EINVAL; if (service_rc == 8 && service_rs == 72) return -EINVAL; zdev->online = 0; pr_err("Cryptographic device %x failed and was set offline\n", zdev->ap_dev->qid); ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", zdev->ap_dev->qid, zdev->online, msg->hdr.reply_code); return -EAGAIN; /* repeat the request on a different device. */ } data = msg->text; reply_len = msg->length - 2; if (reply_len > outputdatalength) return -EINVAL; /* * For all encipher requests, the length of the ciphertext (reply_len) * will always equal the modulus length. For MEX decipher requests * the output needs to get padded. Minimum pad size is 10. * * Currently, the cases where padding will be added is for: * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support * ZERO-PAD and CRT is only supported for PKD requests) * - PCICC, always */ pad_len = outputdatalength - reply_len; if (pad_len > 0) { if (pad_len < 10) return -EINVAL; /* 'restore' padding left in the PCICC/PCIXCC card. */ if (copy_to_user(outputdata, static_pad, pad_len - 1)) return -EFAULT; if (put_user(0, outputdata + pad_len - 1)) return -EFAULT; } /* Copy the crypto response to user space. */ if (copy_to_user(outputdata + pad_len, data, reply_len)) return -EFAULT; return 0; } /** * Copy results from a type 86 XCRB reply message back to user space. * * @zdev: crypto device pointer * @reply: reply AP message. * @xcRB: pointer to XCRB * * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. */ static int convert_type86_xcrb(struct zcrypt_device *zdev, struct ap_message *reply, struct ica_xcRB *xcRB) { struct type86_fmt2_msg *msg = reply->message; char *data = reply->message; /* Copy CPRB to user */ if (copy_to_user(xcRB->reply_control_blk_addr, data + msg->fmt2.offset1, msg->fmt2.count1)) return -EFAULT; xcRB->reply_control_blk_length = msg->fmt2.count1; /* Copy data buffer to user */ if (msg->fmt2.count2) if (copy_to_user(xcRB->reply_data_addr, data + msg->fmt2.offset2, msg->fmt2.count2)) return -EFAULT; xcRB->reply_data_length = msg->fmt2.count2; return 0; } /** * Copy results from a type 86 EP11 XCRB reply message back to user space. * * @zdev: crypto device pointer * @reply: reply AP message. * @xcRB: pointer to EP11 user request block * * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. */ static int convert_type86_ep11_xcrb(struct zcrypt_device *zdev, struct ap_message *reply, struct ep11_urb *xcRB) { struct type86_fmt2_msg *msg = reply->message; char *data = reply->message; if (xcRB->resp_len < msg->fmt2.count1) return -EINVAL; /* Copy response CPRB to user */ if (copy_to_user((char __force __user *)xcRB->resp, data + msg->fmt2.offset1, msg->fmt2.count1)) return -EFAULT; xcRB->resp_len = msg->fmt2.count1; return 0; } static int convert_type86_rng(struct zcrypt_device *zdev, struct ap_message *reply, char *buffer) { struct { struct type86_hdr hdr; struct type86_fmt2_ext fmt2; struct CPRBX cprbx; } __packed * msg = reply->message; char *data = reply->message; if (msg->cprbx.ccp_rtcode != 0 || msg->cprbx.ccp_rscode != 0) return -EINVAL; memcpy(buffer, data + msg->fmt2.offset2, msg->fmt2.count2); return msg->fmt2.count2; } static int convert_response_ica(struct zcrypt_device *zdev, struct ap_message *reply, char __user *outputdata, unsigned int outputdatalength) { struct type86x_reply *msg = reply->message; /* Response type byte is the second byte in the response. */ switch (((unsigned char *) reply->message)[1]) { case TYPE82_RSP_CODE: case TYPE88_RSP_CODE: return convert_error(zdev, reply); case TYPE86_RSP_CODE: if (msg->cprbx.ccp_rtcode && (msg->cprbx.ccp_rscode == 0x14f) && (outputdatalength > 256)) { if (zdev->max_exp_bit_length <= 17) { zdev->max_exp_bit_length = 17; return -EAGAIN; } else return -EINVAL; } if (msg->hdr.reply_code) return convert_error(zdev, reply); if (msg->cprbx.cprb_ver_id == 0x02) return convert_type86_ica(zdev, reply, outputdata, outputdatalength); /* Fall through, no break, incorrect cprb version is an unknown * response */ default: /* Unknown response type, this should NEVER EVER happen */ zdev->online = 0; pr_err("Cryptographic device %x failed and was set offline\n", zdev->ap_dev->qid); ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", zdev->ap_dev->qid, zdev->online); return -EAGAIN; /* repeat the request on a different device. */ } } static int convert_response_xcrb(struct zcrypt_device *zdev, struct ap_message *reply, struct ica_xcRB *xcRB) { struct type86x_reply *msg = reply->message; /* Response type byte is the second byte in the response. */ switch (((unsigned char *) reply->message)[1]) { case TYPE82_RSP_CODE: case TYPE88_RSP_CODE: xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ return convert_error(zdev, reply); case TYPE86_RSP_CODE: if (msg->hdr.reply_code) { memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); return convert_error(zdev, reply); } if (msg->cprbx.cprb_ver_id == 0x02) return convert_type86_xcrb(zdev, reply, xcRB); /* Fall through, no break, incorrect cprb version is an unknown * response */ default: /* Unknown response type, this should NEVER EVER happen */ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ zdev->online = 0; pr_err("Cryptographic device %x failed and was set offline\n", zdev->ap_dev->qid); ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", zdev->ap_dev->qid, zdev->online); return -EAGAIN; /* repeat the request on a different device. */ } } static int convert_response_ep11_xcrb(struct zcrypt_device *zdev, struct ap_message *reply, struct ep11_urb *xcRB) { struct type86_ep11_reply *msg = reply->message; /* Response type byte is the second byte in the response. */ switch (((unsigned char *)reply->message)[1]) { case TYPE82_RSP_CODE: case TYPE87_RSP_CODE: return convert_error(zdev, reply); case TYPE86_RSP_CODE: if (msg->hdr.reply_code) return convert_error(zdev, reply); if (msg->cprbx.cprb_ver_id == 0x04) return convert_type86_ep11_xcrb(zdev, reply, xcRB); /* Fall through, no break, incorrect cprb version is an unknown resp.*/ default: /* Unknown response type, this should NEVER EVER happen */ zdev->online = 0; pr_err("Cryptographic device %x failed and was set offline\n", zdev->ap_dev->qid); ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", zdev->ap_dev->qid, zdev->online); return -EAGAIN; /* repeat the request on a different device. */ } } static int convert_response_rng(struct zcrypt_device *zdev, struct ap_message *reply, char *data) { struct type86x_reply *msg = reply->message; switch (msg->hdr.type) { case TYPE82_RSP_CODE: case TYPE88_RSP_CODE: return -EINVAL; case TYPE86_RSP_CODE: if (msg->hdr.reply_code) return -EINVAL; if (msg->cprbx.cprb_ver_id == 0x02) return convert_type86_rng(zdev, reply, data); /* Fall through, no break, incorrect cprb version is an unknown * response */ default: /* Unknown response type, this should NEVER EVER happen */ zdev->online = 0; pr_err("Cryptographic device %x failed and was set offline\n", zdev->ap_dev->qid); ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", zdev->ap_dev->qid, zdev->online); return -EAGAIN; /* repeat the request on a different device. */ } } /** * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". * It is called from tasklet context. * @ap_dev: pointer to the AP device * @msg: pointer to the AP message * @reply: pointer to the AP reply message */ static void zcrypt_msgtype6_receive(struct ap_device *ap_dev, struct ap_message *msg, struct ap_message *reply) { static struct error_hdr error_reply = { .type = TYPE82_RSP_CODE, .reply_code = REP82_ERROR_MACHINE_FAILURE, }; struct response_type *resp_type = (struct response_type *) msg->private; struct type86x_reply *t86r; int length; /* Copy the reply message to the request message buffer. */ if (!reply) goto out; /* ap_msg->rc indicates the error */ t86r = reply->message; if (t86r->hdr.type == TYPE86_RSP_CODE && t86r->cprbx.cprb_ver_id == 0x02) { switch (resp_type->type) { case PCIXCC_RESPONSE_TYPE_ICA: length = sizeof(struct type86x_reply) + t86r->length - 2; length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length); memcpy(msg->message, reply->message, length); break; case PCIXCC_RESPONSE_TYPE_XCRB: length = t86r->fmt2.offset2 + t86r->fmt2.count2; length = min(MSGTYPE06_MAX_MSG_SIZE, length); memcpy(msg->message, reply->message, length); break; default: memcpy(msg->message, &error_reply, sizeof(error_reply)); } } else memcpy(msg->message, reply->message, sizeof(error_reply)); out: complete(&(resp_type->work)); } /** * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". * It is called from tasklet context. * @ap_dev: pointer to the AP device * @msg: pointer to the AP message * @reply: pointer to the AP reply message */ static void zcrypt_msgtype6_receive_ep11(struct ap_device *ap_dev, struct ap_message *msg, struct ap_message *reply) { static struct error_hdr error_reply = { .type = TYPE82_RSP_CODE, .reply_code = REP82_ERROR_MACHINE_FAILURE, }; struct response_type *resp_type = (struct response_type *)msg->private; struct type86_ep11_reply *t86r; int length; /* Copy the reply message to the request message buffer. */ if (!reply) goto out; /* ap_msg->rc indicates the error */ t86r = reply->message; if (t86r->hdr.type == TYPE86_RSP_CODE && t86r->cprbx.cprb_ver_id == 0x04) { switch (resp_type->type) { case PCIXCC_RESPONSE_TYPE_EP11: length = t86r->fmt2.offset1 + t86r->fmt2.count1; length = min(MSGTYPE06_MAX_MSG_SIZE, length); memcpy(msg->message, reply->message, length); break; default: memcpy(msg->message, &error_reply, sizeof(error_reply)); } } else { memcpy(msg->message, reply->message, sizeof(error_reply)); } out: complete(&(resp_type->work)); } static atomic_t zcrypt_step = ATOMIC_INIT(0); /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to handle a modexpo request. * @zdev: pointer to zcrypt_device structure that identifies the * PCIXCC/CEX2C device to the request distributor * @mex: pointer to the modexpo request buffer */ static long zcrypt_msgtype6_modexpo(struct zcrypt_device *zdev, struct ica_rsa_modexpo *mex) { struct ap_message ap_msg; struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_ICA, }; int rc; ap_init_message(&ap_msg); ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; ap_msg.receive = zcrypt_msgtype6_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex); if (rc) goto out_free; init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) rc = convert_response_ica(zdev, &ap_msg, mex->outputdata, mex->outputdatalength); } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: free_page((unsigned long) ap_msg.message); return rc; } /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to handle a modexpo_crt request. * @zdev: pointer to zcrypt_device structure that identifies the * PCIXCC/CEX2C device to the request distributor * @crt: pointer to the modexpoc_crt request buffer */ static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_device *zdev, struct ica_rsa_modexpo_crt *crt) { struct ap_message ap_msg; struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_ICA, }; int rc; ap_init_message(&ap_msg); ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; ap_msg.receive = zcrypt_msgtype6_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt); if (rc) goto out_free; init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) rc = convert_response_ica(zdev, &ap_msg, crt->outputdata, crt->outputdatalength); } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: free_page((unsigned long) ap_msg.message); return rc; } /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to handle a send_cprb request. * @zdev: pointer to zcrypt_device structure that identifies the * PCIXCC/CEX2C device to the request distributor * @xcRB: pointer to the send_cprb request buffer */ static long zcrypt_msgtype6_send_cprb(struct zcrypt_device *zdev, struct ica_xcRB *xcRB) { struct ap_message ap_msg; struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_XCRB, }; int rc; ap_init_message(&ap_msg); ap_msg.message = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; ap_msg.receive = zcrypt_msgtype6_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB); if (rc) goto out_free; init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) rc = convert_response_xcrb(zdev, &ap_msg, xcRB); } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: kzfree(ap_msg.message); return rc; } /** * The request distributor calls this function if it picked the CEX4P * device to handle a send_ep11_cprb request. * @zdev: pointer to zcrypt_device structure that identifies the * CEX4P device to the request distributor * @xcRB: pointer to the ep11 user request block */ static long zcrypt_msgtype6_send_ep11_cprb(struct zcrypt_device *zdev, struct ep11_urb *xcrb) { struct ap_message ap_msg; struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_EP11, }; int rc; ap_init_message(&ap_msg); ap_msg.message = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; ap_msg.receive = zcrypt_msgtype6_receive_ep11; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; rc = xcrb_msg_to_type6_ep11cprb_msgx(zdev, &ap_msg, xcrb); if (rc) goto out_free; init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) rc = convert_response_ep11_xcrb(zdev, &ap_msg, xcrb); } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); out_free: kzfree(ap_msg.message); return rc; } /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to generate random data. * @zdev: pointer to zcrypt_device structure that identifies the * PCIXCC/CEX2C device to the request distributor * @buffer: pointer to a memory page to return random data */ static long zcrypt_msgtype6_rng(struct zcrypt_device *zdev, char *buffer) { struct ap_message ap_msg; struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_XCRB, }; int rc; ap_init_message(&ap_msg); ap_msg.message = kmalloc(MSGTYPE06_MAX_MSG_SIZE, GFP_KERNEL); if (!ap_msg.message) return -ENOMEM; ap_msg.receive = zcrypt_msgtype6_receive; ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; rng_type6CPRB_msgX(zdev->ap_dev, &ap_msg, ZCRYPT_RNG_BUFFER_SIZE); init_completion(&resp_type.work); ap_queue_message(zdev->ap_dev, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) rc = convert_response_rng(zdev, &ap_msg, buffer); } else /* Signal pending. */ ap_cancel_message(zdev->ap_dev, &ap_msg); kfree(ap_msg.message); return rc; } /** * The crypto operations for a PCIXCC/CEX2C card. */ static struct zcrypt_ops zcrypt_msgtype6_norng_ops = { .owner = THIS_MODULE, .variant = MSGTYPE06_VARIANT_NORNG, .rsa_modexpo = zcrypt_msgtype6_modexpo, .rsa_modexpo_crt = zcrypt_msgtype6_modexpo_crt, .send_cprb = zcrypt_msgtype6_send_cprb, }; static struct zcrypt_ops zcrypt_msgtype6_ops = { .owner = THIS_MODULE, .variant = MSGTYPE06_VARIANT_DEFAULT, .rsa_modexpo = zcrypt_msgtype6_modexpo, .rsa_modexpo_crt = zcrypt_msgtype6_modexpo_crt, .send_cprb = zcrypt_msgtype6_send_cprb, .rng = zcrypt_msgtype6_rng, }; static struct zcrypt_ops zcrypt_msgtype6_ep11_ops = { .owner = THIS_MODULE, .variant = MSGTYPE06_VARIANT_EP11, .rsa_modexpo = NULL, .rsa_modexpo_crt = NULL, .send_ep11_cprb = zcrypt_msgtype6_send_ep11_cprb, }; int __init zcrypt_msgtype6_init(void) { zcrypt_msgtype_register(&zcrypt_msgtype6_norng_ops); zcrypt_msgtype_register(&zcrypt_msgtype6_ops); zcrypt_msgtype_register(&zcrypt_msgtype6_ep11_ops); return 0; } void __exit zcrypt_msgtype6_exit(void) { zcrypt_msgtype_unregister(&zcrypt_msgtype6_norng_ops); zcrypt_msgtype_unregister(&zcrypt_msgtype6_ops); zcrypt_msgtype_unregister(&zcrypt_msgtype6_ep11_ops); } module_init(zcrypt_msgtype6_init); module_exit(zcrypt_msgtype6_exit);