diff options
Diffstat (limited to 'drivers/staging/cpc-usb/sja2m16c_2.c')
| -rw-r--r-- | drivers/staging/cpc-usb/sja2m16c_2.c | 452 |
1 files changed, 0 insertions, 452 deletions
diff --git a/drivers/staging/cpc-usb/sja2m16c_2.c b/drivers/staging/cpc-usb/sja2m16c_2.c deleted file mode 100644 index bf0230fb778..00000000000 --- a/drivers/staging/cpc-usb/sja2m16c_2.c +++ /dev/null @@ -1,452 +0,0 @@ -/**************************************************************************** -* -* Copyright (c) 2003,2004 by EMS Dr. Thomas Wuensche -* -* - All rights reserved - -* -* This code is provided "as is" without warranty of any kind, either -* expressed or implied, including but not limited to the liability -* concerning the freedom from material defects, the fitness for parti- -* cular purposes or the freedom of proprietary rights of third parties. -* -***************************************************************************** -* Module name.: cpcusb -***************************************************************************** -* Include file: cpc.h -***************************************************************************** -* Project.....: Windows Driver Development Kit -* Filename....: sja2m16c.cpp -* Authors.....: (GU) Gerhard Uttenthaler -* (CS) Christian Schoett -***************************************************************************** -* Short descr.: converts baudrate between SJA1000 and M16C -***************************************************************************** -* Description.: handles the baudrate conversion from SJA1000 parameters to -* M16C parameters -***************************************************************************** -* Address : EMS Dr. Thomas Wuensche -* Sonnenhang 3 -* D-85304 Ilmmuenster -* Tel. : +49-8441-490260 -* Fax. : +49-8441-81860 -* email: support@ems-wuensche.com -***************************************************************************** -* History -***************************************************************************** -* Version Date Auth Remark -* -* 01.00 ?? GU - initial release -* 01.10 ?????????? CS - adapted to fit into the USB Windows driver -* 02.00 18.08.2004 GU - improved the baudrate calculating algorithm -* - implemented acceptance filtering -* 02.10 10.09.2004 CS - adapted to fit into the USB Windows driver -***************************************************************************** -* ToDo's -***************************************************************************** -*/ - -/****************************************************************************/ -/* I N C L U D E S -*/ -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/module.h> -#include <linux/poll.h> -#include <linux/smp_lock.h> -#include <linux/completion.h> -#include <asm/uaccess.h> -#include <linux/usb.h> - -#include "cpc.h" -#include "cpc_int.h" -#include "cpcusb.h" - -#include "sja2m16c.h" - -/*********************************************************************/ -int baudrate_m16c(int clk, int brp, int pr, int ph1, int ph2) -{ - return (16000000 / (1 << clk)) / 2 / (brp + 1) / (1 + pr + 1 + - ph1 + 1 + ph2 + - 1); -} - - -/*********************************************************************/ -int samplepoint_m16c(int brp, int pr, int ph1, int ph2) -{ - return (100 * (1 + pr + 1 + ph1 + 1)) / (1 + pr + 1 + ph1 + 1 + - ph2 + 1); -} - - -/**************************************************************************** -* Function.....: SJA1000_TO_M16C_BASIC_Params -* -* Task.........: This routine converts SJA1000 CAN btr parameters into M16C -* parameters based on the sample point and the error. In -* addition it converts the acceptance filter parameters to -* suit the M16C parameters -* -* Parameters...: None -* -* Return values: None -* -* Comments.....: -***************************************************************************** -* History -***************************************************************************** -* 19.01.2005 CS - modifed the conversion of SJA1000 filter params into -* M16C params. Due to compatibility reasons with the -* older 82C200 CAN controller the SJA1000 -****************************************************************************/ -int SJA1000_TO_M16C_BASIC_Params(CPC_MSG_T * in) -{ - int sjaBaudrate; - int sjaSamplepoint; - int *baudrate_error; // BRP[0..15], PR[0..7], PH1[0..7], PH2[0..7] - int *samplepoint_error; // BRP[0..15], PR[0..7], PH1[0..7], PH2[0..7] - int baudrate_error_merk; - int clk, brp, pr, ph1, ph2; - int clk_merk, brp_merk, pr_merk, ph1_merk, ph2_merk; - int index; - unsigned char acc_code0, acc_code1, acc_code2, acc_code3; - unsigned char acc_mask0, acc_mask1, acc_mask2, acc_mask3; - CPC_MSG_T * out; - C0CONR_T c0con; - C1CONR_T c1con; - int tmpAccCode; - int tmpAccMask; - - // we have to convert the parameters into M16C parameters - CPC_SJA1000_PARAMS_T * pParams; - - // check if the type is CAN parameters and if we have to convert the given params - if (in->type != CPC_CMD_T_CAN_PRMS - || in->msg.canparams.cc_type != SJA1000) - return 0; - pParams = - (CPC_SJA1000_PARAMS_T *) & in->msg.canparams.cc_params.sja1000; - acc_code0 = pParams->acc_code0; - acc_code1 = pParams->acc_code1; - acc_code2 = pParams->acc_code2; - acc_code3 = pParams->acc_code3; - acc_mask0 = pParams->acc_mask0; - acc_mask1 = pParams->acc_mask1; - acc_mask2 = pParams->acc_mask2; - acc_mask3 = pParams->acc_mask3; - -#ifdef _DEBUG_OUTPUT_CAN_PARAMS - info("acc_code0: %2.2Xh\n", acc_code0); - info("acc_code1: %2.2Xh\n", acc_code1); - info("acc_code2: %2.2Xh\n", acc_code2); - info("acc_code3: %2.2Xh\n", acc_code3); - info("acc_mask0: %2.2Xh\n", acc_mask0); - info("acc_mask1: %2.2Xh\n", acc_mask1); - info("acc_mask2: %2.2Xh\n", acc_mask2); - info("acc_mask3: %2.2Xh\n", acc_mask3); - -#endif /* */ - if (! - (baudrate_error = - (int *) vmalloc(sizeof(int) * 16 * 8 * 8 * 8 * 5))) { - err("Could not allocate memory\n"); - return -3; - } - if (! - (samplepoint_error = - (int *) vmalloc(sizeof(int) * 16 * 8 * 8 * 8 * 5))) { - err("Could not allocate memory\n"); - vfree(baudrate_error); - return -3; - } - memset(baudrate_error, 0xff, sizeof(baudrate_error)); - memset(samplepoint_error, 0xff, sizeof(baudrate_error)); - sjaBaudrate = - 16000000 / 2 / SJA_BRP / (1 + SJA_TSEG1 + SJA_TSEG2); - sjaSamplepoint = - 100 * (1 + SJA_TSEG1) / (1 + SJA_TSEG1 + SJA_TSEG2); - if (sjaBaudrate == 0) { - vfree(baudrate_error); - vfree(samplepoint_error); - return -2; - } - -#ifdef _DEBUG_OUTPUT_CAN_PARAMS - info("\nStarting SJA CAN params\n"); - info("-------------------------\n"); - info("TS1 : %2.2Xh TS2 : %2.2Xh\n", SJA_TSEG1, SJA_TSEG2); - info("BTR0 : %2.2Xh BTR1: %2.2Xh\n", pParams->btr0, - pParams->btr1); - info("Baudrate: %d.%dkBaud\n", sjaBaudrate / 1000, - sjaBaudrate % 1000); - info("Sample P: 0.%d\n", sjaSamplepoint); - info("\n"); - -#endif /* */ - c0con.bc0con.sam = SJA_SAM; - c1con.bc1con.sjw = SJA_SJW; - - // calculate errors for all baudrates - index = 0; - for (clk = 0; clk < 5; clk++) { - for (brp = 0; brp < 16; brp++) { - for (pr = 0; pr < 8; pr++) { - for (ph1 = 0; ph1 < 8; ph1++) { - for (ph2 = 0; ph2 < 8; ph2++) { - baudrate_error[index] = - 100 * - abs(baudrate_m16c - (clk, brp, pr, ph1, - ph2) - - sjaBaudrate) / - sjaBaudrate; - samplepoint_error[index] = - abs(samplepoint_m16c - (brp, pr, ph1, - ph2) - - sjaSamplepoint); - -#if 0 - info - ("Baudrate : %d kBaud\n", - baudrate_m16c(clk, - brp, pr, - ph1, - ph2)); - info - ("Baudrate Error: %d\n", - baudrate_error - [index]); - info - ("Sample P Error: %d\n", - samplepoint_error - [index]); - info - ("clk : %d\n", - clk); - -#endif /* */ - index++; - } - } - } - } - } - - // mark all baudrate_error entries which are outer limits - index = 0; - for (clk = 0; clk < 5; clk++) { - for (brp = 0; brp < 16; brp++) { - for (pr = 0; pr < 8; pr++) { - for (ph1 = 0; ph1 < 8; ph1++) { - for (ph2 = 0; ph2 < 8; ph2++) { - if ((baudrate_error[index] - > - BAUDRATE_TOLERANCE_PERCENT) - || - (samplepoint_error - [index] > - SAMPLEPOINT_TOLERANCE_PERCENT) - || - (samplepoint_m16c - (brp, pr, ph1, - ph2) > - SAMPLEPOINT_UPPER_LIMIT)) - { - baudrate_error - [index] = -1; - } else - if (((1 + pr + 1 + - ph1 + 1 + ph2 + - 1) < 8) - || - ((1 + pr + 1 + - ph1 + 1 + ph2 + - 1) > 25)) { - baudrate_error - [index] = -1; - } - -#if 0 - else { - info - ("Baudrate : %d kBaud\n", - baudrate_m16c - (clk, brp, pr, - ph1, ph2)); - info - ("Baudrate Error: %d\n", - baudrate_error - [index]); - info - ("Sample P Error: %d\n", - samplepoint_error - [index]); - } - -#endif /* */ - index++; - } - } - } - } - } - - // find list of minimum of baudrate_error within unmarked entries - clk_merk = brp_merk = pr_merk = ph1_merk = ph2_merk = 0; - baudrate_error_merk = 100; - index = 0; - for (clk = 0; clk < 5; clk++) { - for (brp = 0; brp < 16; brp++) { - for (pr = 0; pr < 8; pr++) { - for (ph1 = 0; ph1 < 8; ph1++) { - for (ph2 = 0; ph2 < 8; ph2++) { - if (baudrate_error[index] - != -1) { - if (baudrate_error - [index] < - baudrate_error_merk) - { - baudrate_error_merk - = - baudrate_error - [index]; - brp_merk = - brp; - pr_merk = - pr; - ph1_merk = - ph1; - ph2_merk = - ph2; - clk_merk = - clk; - -#if 0 - info - ("brp: %2.2Xh pr: %2.2Xh ph1: %2.2Xh ph2: %2.2Xh\n", - brp, - pr, - ph1, - ph2); - info - ("Baudrate : %d kBaud\n", - baudrate_m16c - (clk, - brp, - pr, - ph1, - ph2)); - info - ("Baudrate Error: %d\n", - baudrate_error - [index]); - info - ("Sample P Error: %d\n", - samplepoint_error - [index]); - -#endif /* */ - } - } - index++; - } - } - } - } - } - if (baudrate_error_merk == 100) { - info("ERROR: Could not convert CAN init parameter\n"); - vfree(baudrate_error); - vfree(samplepoint_error); - return -1; - } - - // setting m16c CAN parameter - c0con.bc0con.brp = brp_merk; - c0con.bc0con.pr = pr_merk; - c1con.bc1con.ph1 = ph1_merk; - c1con.bc1con.ph2 = ph2_merk; - -#ifdef _DEBUG_OUTPUT_CAN_PARAMS - info("\nResulting M16C CAN params\n"); - info("-------------------------\n"); - info("clk : %2.2Xh\n", clk_merk); - info("ph1 : %2.2Xh ph2: %2.2Xh\n", c1con.bc1con.ph1 + 1, - c1con.bc1con.ph2 + 1); - info("pr : %2.2Xh brp: %2.2Xh\n", c0con.bc0con.pr + 1, - c0con.bc0con.brp + 1); - info("sjw : %2.2Xh sam: %2.2Xh\n", c1con.bc1con.sjw, - c0con.bc0con.sam); - info("co1 : %2.2Xh co0: %2.2Xh\n", c1con.c1con, c0con.c0con); - info("Baudrate: %d.%dBaud\n", - baudrate_m16c(clk_merk, c0con.bc0con.brp, c0con.bc0con.pr, - c1con.bc1con.ph1, c1con.bc1con.ph2) / 1000, - baudrate_m16c(clk_merk, c0con.bc0con.brp, c0con.bc0con.pr, - c1con.bc1con.ph1, c1con.bc1con.ph2) % 1000); - info("Sample P: 0.%d\n", - samplepoint_m16c(c0con.bc0con.brp, c0con.bc0con.pr, - c1con.bc1con.ph1, c1con.bc1con.ph2)); - info("\n"); - -#endif /* */ - out = in; - out->type = 6; - out->length = sizeof(CPC_M16C_BASIC_PARAMS_T) + 1; - out->msg.canparams.cc_type = M16C_BASIC; - out->msg.canparams.cc_params.m16c_basic.con0 = c0con.c0con; - out->msg.canparams.cc_params.m16c_basic.con1 = c1con.c1con; - out->msg.canparams.cc_params.m16c_basic.ctlr0 = 0x4C; - out->msg.canparams.cc_params.m16c_basic.ctlr1 = 0x00; - out->msg.canparams.cc_params.m16c_basic.clk = clk_merk; - out->msg.canparams.cc_params.m16c_basic.acc_std_code0 = - acc_code0; - out->msg.canparams.cc_params.m16c_basic.acc_std_code1 = acc_code1; - -// info("code0: 0x%2.2X, code1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_code0, out->msg.canparams.cc_params.m16c_basic.acc_std_code1); - tmpAccCode = (acc_code1 >> 5) + (acc_code0 << 3); - out->msg.canparams.cc_params.m16c_basic.acc_std_code0 = - (unsigned char) tmpAccCode; - out->msg.canparams.cc_params.m16c_basic.acc_std_code1 = - (unsigned char) (tmpAccCode >> 8); - -// info("code0: 0x%2.2X, code1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_code0, out->msg.canparams.cc_params.m16c_basic.acc_std_code1); - out->msg.canparams.cc_params.m16c_basic.acc_std_mask0 = - ~acc_mask0; - out->msg.canparams.cc_params.m16c_basic.acc_std_mask1 = - ~acc_mask1; - -// info("mask0: 0x%2.2X, mask1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_mask0, out->msg.canparams.cc_params.m16c_basic.acc_std_mask1); - tmpAccMask = ((acc_mask1) >> 5) + ((acc_mask0) << 3); - -// info("tmpAccMask: 0x%4.4X\n", tmpAccMask); - out->msg.canparams.cc_params.m16c_basic.acc_std_mask0 = - (unsigned char) ~tmpAccMask; - out->msg.canparams.cc_params.m16c_basic.acc_std_mask1 = - (unsigned char) ~(tmpAccMask >> 8); - -// info("mask0: 0x%2.2X, mask1: 0x%2.2X\n", out->msg.canparams.cc_params.m16c_basic.acc_std_mask0, out->msg.canparams.cc_params.m16c_basic.acc_std_mask1); - out->msg.canparams.cc_params.m16c_basic.acc_ext_code0 = - (unsigned char) tmpAccCode; - out->msg.canparams.cc_params.m16c_basic.acc_ext_code1 = - (unsigned char) (tmpAccCode >> 8); - out->msg.canparams.cc_params.m16c_basic.acc_ext_code2 = acc_code2; - out->msg.canparams.cc_params.m16c_basic.acc_ext_code3 = acc_code3; - out->msg.canparams.cc_params.m16c_basic.acc_ext_mask0 = - (unsigned char) ~tmpAccMask; - out->msg.canparams.cc_params.m16c_basic.acc_ext_mask1 = - (unsigned char) ~(tmpAccMask >> 8); - out->msg.canparams.cc_params.m16c_basic.acc_ext_mask2 = - ~acc_mask2; - out->msg.canparams.cc_params.m16c_basic.acc_ext_mask3 = - ~acc_mask3; - vfree(baudrate_error); - vfree(samplepoint_error); - return 0; -} - - |