| /* |
| * 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 <schwidefsky@de.ibm.com> |
| * Ralph Wuerthner <rwuerthn@de.ibm.com> |
| * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> |
| * |
| * 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 <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/atomic.h> |
| #include <linux/uaccess.h> |
| |
| #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"); |
| |
| /** |
| * 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 const struct CPRBX static_cprbx = { |
| .cprb_len = 0x00DC, |
| .cprb_ver_id = 0x02, |
| .func_id = {0x54, 0x32}, |
| }; |
| |
| int speed_idx_cca(int req_type) |
| { |
| switch (req_type) { |
| case 0x4142: |
| case 0x4149: |
| case 0x414D: |
| case 0x4341: |
| case 0x4344: |
| case 0x4354: |
| case 0x4358: |
| case 0x444B: |
| case 0x4558: |
| case 0x4643: |
| case 0x4651: |
| case 0x4C47: |
| case 0x4C4B: |
| case 0x4C51: |
| case 0x4F48: |
| case 0x504F: |
| case 0x5053: |
| case 0x5058: |
| case 0x5343: |
| case 0x5344: |
| case 0x5345: |
| case 0x5350: |
| return LOW; |
| case 0x414B: |
| case 0x4345: |
| case 0x4349: |
| case 0x434D: |
| case 0x4847: |
| case 0x4849: |
| case 0x484D: |
| case 0x4850: |
| case 0x4851: |
| case 0x4954: |
| case 0x4958: |
| case 0x4B43: |
| case 0x4B44: |
| case 0x4B45: |
| case 0x4B47: |
| case 0x4B48: |
| case 0x4B49: |
| case 0x4B4E: |
| case 0x4B50: |
| case 0x4B52: |
| case 0x4B54: |
| case 0x4B58: |
| case 0x4D50: |
| case 0x4D53: |
| case 0x4D56: |
| case 0x4D58: |
| case 0x5044: |
| case 0x5045: |
| case 0x5046: |
| case 0x5047: |
| case 0x5049: |
| case 0x504B: |
| case 0x504D: |
| case 0x5254: |
| case 0x5347: |
| case 0x5349: |
| case 0x534B: |
| case 0x534D: |
| case 0x5356: |
| case 0x5358: |
| case 0x5443: |
| case 0x544B: |
| case 0x5647: |
| return HIGH; |
| default: |
| return MEDIUM; |
| } |
| } |
| |
| int speed_idx_ep11(int req_type) |
| { |
| switch (req_type) { |
| case 1: |
| case 2: |
| case 36: |
| case 37: |
| case 38: |
| case 39: |
| case 40: |
| return LOW; |
| case 17: |
| case 18: |
| case 19: |
| case 20: |
| case 21: |
| case 22: |
| case 26: |
| case 30: |
| case 31: |
| case 32: |
| case 33: |
| case 34: |
| case 35: |
| return HIGH; |
| default: |
| return MEDIUM; |
| } |
| } |
| |
| |
| /** |
| * Convert a ICAMEX message to a type6 MEX message. |
| * |
| * @zq: 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_queue *zq, |
| 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', ' ', ' ', ' ', ' ', ' '} |
| }; |
| 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); |
| 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(zq->queue->qid); |
| msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; |
| |
| msg->fr = 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. |
| * |
| * @zq: 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_queue *zq, |
| 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'} |
| }; |
| |
| 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); |
| 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(zq->queue->qid); |
| msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = |
| size - sizeof(msg->hdr) - sizeof(msg->cprbx); |
| |
| msg->fr = static_pkd_fnr; |
| |
| ap_msg->length = size; |
| return 0; |
| } |
| |
| /** |
| * Convert a XCRB message to a type6 CPRB message. |
| * |
| * @zq: 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 ap_message *ap_msg, |
| struct ica_xcRB *xcRB, |
| unsigned int *fcode, |
| unsigned short **dom) |
| { |
| 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)); |
| |
| *fcode = (msg->hdr.function_code[0] << 8) | msg->hdr.function_code[1]; |
| *dom = (unsigned short *)&msg->cprbx.domain; |
| |
| 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 ap_message *ap_msg, |
| struct ep11_urb *xcRB, |
| unsigned int *fcode) |
| { |
| 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 = NULL; |
| |
| 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; |
| } |
| |
| 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); |
| *fcode = payload_hdr->func_val & 0xFFFF; |
| |
| return 0; |
| } |
| |
| /** |
| * Copy results from a type 86 ICA reply message back to user space. |
| * |
| * @zq: 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_queue *zq, |
| 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) || |
| (service_rc == 8 && service_rs == 65) || |
| (service_rc == 8 && service_rs == 72) || |
| (service_rc == 8 && service_rs == 770) || |
| (service_rc == 12 && service_rs == 769)) { |
| ZCRYPT_DBF(DBF_DEBUG, |
| "device=%02x.%04x rc/rs=%d/%d => rc=EINVAL\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) service_rc, (int) service_rs); |
| return -EINVAL; |
| } |
| if (service_rc == 8 && service_rs == 783) { |
| zq->zcard->min_mod_size = |
| PCIXCC_MIN_MOD_SIZE_OLD; |
| ZCRYPT_DBF(DBF_DEBUG, |
| "device=%02x.%04x rc/rs=%d/%d => rc=EAGAIN\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) service_rc, (int) service_rs); |
| return -EAGAIN; |
| } |
| zq->online = 0; |
| pr_err("Cryptographic device %02x.%04x failed and was set offline\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid)); |
| ZCRYPT_DBF(DBF_ERR, |
| "device=%02x.%04x rc/rs=%d/%d => online=0 rc=EAGAIN\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) service_rc, (int) service_rs); |
| 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. |
| * |
| * @zq: 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_queue *zq, |
| 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. |
| * |
| * @zq: 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_queue *zq, |
| 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_queue *zq, |
| 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_queue *zq, |
| struct ap_message *reply, |
| char __user *outputdata, |
| unsigned int outputdatalength) |
| { |
| struct type86x_reply *msg = reply->message; |
| |
| switch (msg->hdr.type) { |
| case TYPE82_RSP_CODE: |
| case TYPE88_RSP_CODE: |
| return convert_error(zq, reply); |
| case TYPE86_RSP_CODE: |
| if (msg->cprbx.ccp_rtcode && |
| (msg->cprbx.ccp_rscode == 0x14f) && |
| (outputdatalength > 256)) { |
| if (zq->zcard->max_exp_bit_length <= 17) { |
| zq->zcard->max_exp_bit_length = 17; |
| return -EAGAIN; |
| } else |
| return -EINVAL; |
| } |
| if (msg->hdr.reply_code) |
| return convert_error(zq, reply); |
| if (msg->cprbx.cprb_ver_id == 0x02) |
| return convert_type86_ica(zq, reply, |
| outputdata, outputdatalength); |
| /* Fall through, no break, incorrect cprb version is an unknown |
| * response */ |
| default: /* Unknown response type, this should NEVER EVER happen */ |
| zq->online = 0; |
| pr_err("Cryptographic device %02x.%04x failed and was set offline\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid)); |
| ZCRYPT_DBF(DBF_ERR, |
| "device=%02x.%04x rtype=0x%02x => online=0 rc=EAGAIN\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) msg->hdr.type); |
| return -EAGAIN; /* repeat the request on a different device. */ |
| } |
| } |
| |
| static int convert_response_xcrb(struct zcrypt_queue *zq, |
| struct ap_message *reply, |
| struct ica_xcRB *xcRB) |
| { |
| struct type86x_reply *msg = reply->message; |
| |
| switch (msg->hdr.type) { |
| case TYPE82_RSP_CODE: |
| case TYPE88_RSP_CODE: |
| xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ |
| return convert_error(zq, reply); |
| case TYPE86_RSP_CODE: |
| if (msg->hdr.reply_code) { |
| memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); |
| return convert_error(zq, reply); |
| } |
| if (msg->cprbx.cprb_ver_id == 0x02) |
| return convert_type86_xcrb(zq, 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 */ |
| zq->online = 0; |
| pr_err("Cryptographic device %02x.%04x failed and was set offline\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid)); |
| ZCRYPT_DBF(DBF_ERR, |
| "device=%02x.%04x rtype=0x%02x => online=0 rc=EAGAIN\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) msg->hdr.type); |
| return -EAGAIN; /* repeat the request on a different device. */ |
| } |
| } |
| |
| static int convert_response_ep11_xcrb(struct zcrypt_queue *zq, |
| struct ap_message *reply, struct ep11_urb *xcRB) |
| { |
| struct type86_ep11_reply *msg = reply->message; |
| |
| switch (msg->hdr.type) { |
| case TYPE82_RSP_CODE: |
| case TYPE87_RSP_CODE: |
| return convert_error(zq, reply); |
| case TYPE86_RSP_CODE: |
| if (msg->hdr.reply_code) |
| return convert_error(zq, reply); |
| if (msg->cprbx.cprb_ver_id == 0x04) |
| return convert_type86_ep11_xcrb(zq, reply, xcRB); |
| /* Fall through, no break, incorrect cprb version is an unknown resp.*/ |
| default: /* Unknown response type, this should NEVER EVER happen */ |
| zq->online = 0; |
| pr_err("Cryptographic device %02x.%04x failed and was set offline\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid)); |
| ZCRYPT_DBF(DBF_ERR, |
| "device=%02x.%04x rtype=0x%02x => online=0 rc=EAGAIN\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) msg->hdr.type); |
| return -EAGAIN; /* repeat the request on a different device. */ |
| } |
| } |
| |
| static int convert_response_rng(struct zcrypt_queue *zq, |
| 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(zq, reply, data); |
| /* Fall through, no break, incorrect cprb version is an unknown |
| * response */ |
| default: /* Unknown response type, this should NEVER EVER happen */ |
| zq->online = 0; |
| pr_err("Cryptographic device %02x.%04x failed and was set offline\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid)); |
| ZCRYPT_DBF(DBF_ERR, |
| "device=%02x.%04x rtype=0x%02x => online=0 rc=EAGAIN\n", |
| AP_QID_CARD(zq->queue->qid), |
| AP_QID_QUEUE(zq->queue->qid), |
| (int) msg->hdr.type); |
| 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. |
| * @aq: pointer to the AP queue |
| * @msg: pointer to the AP message |
| * @reply: pointer to the AP reply message |
| */ |
| static void zcrypt_msgtype6_receive(struct ap_queue *aq, |
| 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. |
| * @aq: pointer to the AP queue |
| * @msg: pointer to the AP message |
| * @reply: pointer to the AP reply message |
| */ |
| static void zcrypt_msgtype6_receive_ep11(struct ap_queue *aq, |
| 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. |
| * @zq: pointer to zcrypt_queue 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_queue *zq, |
| 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(zq, &ap_msg, mex); |
| if (rc) |
| goto out_free; |
| init_completion(&resp_type.work); |
| ap_queue_message(zq->queue, &ap_msg); |
| rc = wait_for_completion_interruptible(&resp_type.work); |
| if (rc == 0) { |
| rc = ap_msg.rc; |
| if (rc == 0) |
| rc = convert_response_ica(zq, &ap_msg, |
| mex->outputdata, |
| mex->outputdatalength); |
| } else |
| /* Signal pending. */ |
| ap_cancel_message(zq->queue, &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. |
| * @zq: pointer to zcrypt_queue 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_queue *zq, |
| 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(zq, &ap_msg, crt); |
| if (rc) |
| goto out_free; |
| init_completion(&resp_type.work); |
| ap_queue_message(zq->queue, &ap_msg); |
| rc = wait_for_completion_interruptible(&resp_type.work); |
| if (rc == 0) { |
| rc = ap_msg.rc; |
| if (rc == 0) |
| rc = convert_response_ica(zq, &ap_msg, |
| crt->outputdata, |
| crt->outputdatalength); |
| } else { |
| /* Signal pending. */ |
| ap_cancel_message(zq->queue, &ap_msg); |
| } |
| out_free: |
| free_page((unsigned long) ap_msg.message); |
| return rc; |
| } |
| |
| unsigned int get_cprb_fc(struct ica_xcRB *xcRB, |
| struct ap_message *ap_msg, |
| unsigned int *func_code, unsigned short **dom) |
| { |
| 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 = kmalloc(sizeof(resp_type), GFP_KERNEL); |
| if (!ap_msg->private) { |
| kzfree(ap_msg->message); |
| return -ENOMEM; |
| } |
| memcpy(ap_msg->private, &resp_type, sizeof(resp_type)); |
| rc = XCRB_msg_to_type6CPRB_msgX(ap_msg, xcRB, func_code, dom); |
| if (rc) { |
| kzfree(ap_msg->message); |
| kzfree(ap_msg->private); |
| } |
| return rc; |
| } |
| |
| /** |
| * The request distributor calls this function if it picked the PCIXCC/CEX2C |
| * device to handle a send_cprb request. |
| * @zq: pointer to zcrypt_queue 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_queue *zq, |
| struct ica_xcRB *xcRB, |
| struct ap_message *ap_msg) |
| { |
| int rc; |
| struct response_type *rtype = (struct response_type *)(ap_msg->private); |
| |
| init_completion(&rtype->work); |
| ap_queue_message(zq->queue, ap_msg); |
| rc = wait_for_completion_interruptible(&rtype->work); |
| if (rc == 0) { |
| rc = ap_msg->rc; |
| if (rc == 0) |
| rc = convert_response_xcrb(zq, ap_msg, xcRB); |
| } else |
| /* Signal pending. */ |
| ap_cancel_message(zq->queue, ap_msg); |
| |
| kzfree(ap_msg->message); |
| kzfree(ap_msg->private); |
| return rc; |
| } |
| |
| unsigned int get_ep11cprb_fc(struct ep11_urb *xcrb, |
| struct ap_message *ap_msg, |
| unsigned int *func_code) |
| { |
| 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 = kmalloc(sizeof(resp_type), GFP_KERNEL); |
| if (!ap_msg->private) { |
| kzfree(ap_msg->message); |
| return -ENOMEM; |
| } |
| memcpy(ap_msg->private, &resp_type, sizeof(resp_type)); |
| rc = xcrb_msg_to_type6_ep11cprb_msgx(ap_msg, xcrb, func_code); |
| if (rc) { |
| kzfree(ap_msg->message); |
| kzfree(ap_msg->private); |
| } |
| return rc; |
| } |
| |
| /** |
| * The request distributor calls this function if it picked the CEX4P |
| * device to handle a send_ep11_cprb request. |
| * @zq: pointer to zcrypt_queue 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_queue *zq, |
| struct ep11_urb *xcrb, |
| struct ap_message *ap_msg) |
| { |
| int rc; |
| unsigned int lfmt; |
| struct response_type *rtype = (struct response_type *)(ap_msg->private); |
| 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 = NULL; |
| |
| |
| /** |
| * 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(zq->queue->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(zq->queue->qid); |
| } |
| |
| init_completion(&rtype->work); |
| ap_queue_message(zq->queue, ap_msg); |
| rc = wait_for_completion_interruptible(&rtype->work); |
| if (rc == 0) { |
| rc = ap_msg->rc; |
| if (rc == 0) |
| rc = convert_response_ep11_xcrb(zq, ap_msg, xcrb); |
| } else |
| /* Signal pending. */ |
| ap_cancel_message(zq->queue, ap_msg); |
| |
| kzfree(ap_msg->message); |
| kzfree(ap_msg->private); |
| return rc; |
| } |
| |
| unsigned int get_rng_fc(struct ap_message *ap_msg, int *func_code, |
| unsigned int *domain) |
| { |
| struct response_type resp_type = { |
| .type = PCIXCC_RESPONSE_TYPE_XCRB, |
| }; |
| |
| 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 = kmalloc(sizeof(resp_type), GFP_KERNEL); |
| if (!ap_msg->private) { |
| kzfree(ap_msg->message); |
| return -ENOMEM; |
| } |
| memcpy(ap_msg->private, &resp_type, sizeof(resp_type)); |
| |
| rng_type6CPRB_msgX(ap_msg, ZCRYPT_RNG_BUFFER_SIZE, domain); |
| |
| *func_code = HWRNG; |
| return 0; |
| } |
| |
| /** |
| * The request distributor calls this function if it picked the PCIXCC/CEX2C |
| * device to generate random data. |
| * @zq: pointer to zcrypt_queue 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_queue *zq, |
| char *buffer, struct ap_message *ap_msg) |
| { |
| struct { |
| struct type6_hdr hdr; |
| struct CPRBX cprbx; |
| char function_code[2]; |
| short int rule_length; |
| char rule[8]; |
| short int verb_length; |
| short int key_length; |
| } __packed * msg = ap_msg->message; |
| struct response_type *rtype = (struct response_type *)(ap_msg->private); |
| int rc; |
| |
| msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid); |
| |
| init_completion(&rtype->work); |
| ap_queue_message(zq->queue, ap_msg); |
| rc = wait_for_completion_interruptible(&rtype->work); |
| if (rc == 0) { |
| rc = ap_msg->rc; |
| if (rc == 0) |
| rc = convert_response_rng(zq, ap_msg, buffer); |
| } else |
| /* Signal pending. */ |
| ap_cancel_message(zq->queue, ap_msg); |
| |
| kzfree(ap_msg->message); |
| kzfree(ap_msg->private); |
| return rc; |
| } |
| |
| /** |
| * The crypto operations for a PCIXCC/CEX2C card. |
| */ |
| static struct zcrypt_ops zcrypt_msgtype6_norng_ops = { |
| .owner = THIS_MODULE, |
| .name = MSGTYPE06_NAME, |
| .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, |
| .name = MSGTYPE06_NAME, |
| .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, |
| .name = MSGTYPE06_NAME, |
| .variant = MSGTYPE06_VARIANT_EP11, |
| .rsa_modexpo = NULL, |
| .rsa_modexpo_crt = NULL, |
| .send_ep11_cprb = zcrypt_msgtype6_send_ep11_cprb, |
| }; |
| |
| void __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); |
| } |
| |
| 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); |
| } |
