#include "supported_cards.h"
-#include "../include/pip.h"
-#include "../include/pccan.h"
-#include "../include/smartcan.h"
-#include "../include/pc-i03.h"
-#include "../include/pcm3680.h"
-#include "../include/m437.h"
-#include "../include/template.h"
-#include "../include/i82527.h"
-#include "../include/aim104.h"
-#include "../include/pcccan.h"
-
extern int template_register(struct hwspecops_t *hwspecops);
extern int pip5_register(struct hwspecops_t *hwspecops);
extern int pip6_register(struct hwspecops_t *hwspecops);
+extern int m437_register(struct hwspecops_t *hwspecops);
extern int smartcan_register(struct hwspecops_t *hwspecops);
extern int pccanf_register(struct hwspecops_t *hwspecops);
extern int pccand_register(struct hwspecops_t *hwspecops);
extern int ssv_register(struct hwspecops_t *hwspecops);
extern int bfadcan_register(struct hwspecops_t *hwspecops);
extern int pikronisa_register(struct hwspecops_t *hwspecops);
+extern int msmcan_register(struct hwspecops_t *hwspecops);
extern int virtual_register(struct hwspecops_t *hwspecops);
const struct boardtype_t can_boardtypes[]={
#endif
#ifdef ENABLE_CARD_pikronisa
{"pikronisa", pikronisa_register, 1},
+ #endif
+ #ifdef ENABLE_CARD_msmcan
+ {"msmcan", msmcan_register, 1},
#endif
{NULL}
};
--- /dev/null
+/* msmcan.c
+ * Linux CAN-bus device driver.
+ * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
+ * This software is released under the GPL-License.
+ * Version lincan-0.2 9 Jul 2003
+ */
+
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
+#include "../include/main.h"
+#include "../include/msmcan.h"
+#include "../include/i82527.h"
+
+static can_spinlock_t msmcan_port_lock=SPIN_LOCK_UNLOCKED;
+
+/* IO_RANGE is the io-memory range that gets reserved, please adjust according
+ * your hardware. Example: #define IO_RANGE 0x100 for i82527 chips or
+ * #define IO_RANGE 0x20 for sja1000 chips.
+ */
+#define IO_RANGE 0x04
+
+/* The function template_request_io is used to reserve the io-memory. If your
+ * hardware uses a dedicated memory range as hardware control registers you
+ * will have to add the code to reserve this memory as well.
+ * The reserved memory starts at candev->io_addr, wich is the module parameter io.
+ */
+int msmcan_request_io(struct candevice_t *candev)
+{
+
+ if (!can_request_io_region(candev->io_addr,IO_RANGE,DEVICE_NAME)) {
+ CANMSG("Unable to open port: 0x%lx\n",candev->io_addr);
+ return -ENODEV;
+ } else {
+ DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr,
+ candev->io_addr + IO_RANGE - 1);
+ }
+ return 0;
+}
+
+/* The function template_release_io is used to free the previously reserved
+ * io-memory. In case you reserved more memory, don't forget to free it here.
+ */
+int msmcan_release_io(struct candevice_t *candev)
+{
+
+ can_release_io_region(candev->io_addr,IO_RANGE);
+
+ return 0;
+}
+
+/* The function template_reset is used to give a hardware reset. This is rather
+ * hardware specific so I haven't included example code. Don't forget to check
+ * the reset status of the chip before returning.
+ */
+int msmcan_reset(struct candevice_t *candev)
+{
+ struct chip_t *chip=candev->chip[0];
+
+ DEBUGMSG("Resetting msmcan hardware ...\n");
+ /* we don't use template_write_register because we don't use the two first
+ registers of the card but the third in order to make a hard reset */
+ /* outb (1, msmcan_base + candev->res_addr); */
+
+ can_disable_irq(chip->chip_irq);
+ msmcan_write_register(iCTL_INI, chip->chip_base_addr+iCTL);
+ can_enable_irq(chip->chip_irq);
+
+ return 0;
+}
+
+/* The function template_init_hw_data is used to initialize the hardware
+ * structure containing information about the installed CAN-board.
+ * RESET_ADDR represents the io-address of the hardware reset register.
+ * NR_82527 represents the number of intel 82527 chips on the board.
+ * NR_SJA1000 represents the number of philips sja1000 chips on the board.
+ * The flags entry can currently only be CANDEV_PROGRAMMABLE_IRQ to indicate that
+ * the hardware uses programmable interrupts.
+ */
+#define NR_82527 1
+#define NR_SJA1000 0
+
+int msmcan_init_hw_data(struct candevice_t *candev)
+{
+ candev->res_addr=0;
+ candev->nr_82527_chips=1;
+ candev->nr_sja1000_chips=0;
+ candev->nr_all_chips=1;
+ candev->flags |= CANDEV_PROGRAMMABLE_IRQ*0;
+
+ return 0;
+}
+
+/* The function template_init_chip_data is used to initialize the hardware
+ * structure containing information about the CAN chips.
+ * CHIP_TYPE represents the type of CAN chip. CHIP_TYPE can be "i82527" or
+ * "sja1000".
+ * The chip_base_addr entry represents the start of the 'official' memory map
+ * of the installed chip. It's likely that this is the same as the candev->io_addr
+ * argument supplied at module loading time.
+ * The clock argument holds the chip clock value in Hz.
+ */
+#define CHIP_TYPE "i82527"
+
+int msmcan_init_chip_data(struct candevice_t *candev, int chipnr)
+{
+ candev->chip[chipnr]->chip_type=CHIP_TYPE;
+ /* device uses indexed access */
+ candev->chip[chipnr]->chip_base_addr=
+ candev->io_addr << 16;
+ candev->chip[chipnr]->clock = 16000000;
+ candev->chip[chipnr]->int_cpu_reg = iCPU_DSC;
+ candev->chip[chipnr]->int_clk_reg = iCLK_SL1;
+ candev->chip[chipnr]->int_bus_reg = iBUS_CBY;
+
+ return 0;
+}
+
+ /* The function template_init_obj_data is used to initialize the hardware
+ * structure containing information about the different message objects on the
+ * CAN chip. In case of the sja1000 there's only one message object but on the
+ * i82527 chip there are 15.
+ * The code below is for a i82527 chip and initializes the object base addresses
+ * The entry obj_base_addr represents the first memory address of the message
+ * object. In case of the sja1000 obj_base_addr is taken the same as the chips
+ * base address.
+ * Unless the hardware uses a segmented memory map, flags can be set zero.
+ */
+int msmcan_init_obj_data(struct chip_t *chip, int objnr)
+{
+
+ chip->msgobj[objnr]->obj_base_addr=
+ chip->chip_base_addr+(objnr+1)*0x10;
+
+ return 0;
+}
+
+/* The function template_program_irq is used for hardware that uses programmable
+ * interrupts. If your hardware doesn't use programmable interrupts you should
+ * not set the candevices_t->flags entry to CANDEV_PROGRAMMABLE_IRQ and leave this
+ * function unedited. Again this function is hardware specific so there's no
+ * example code.
+ */
+int msmcan_program_irq(struct candevice_t *candev)
+{
+ return 0;
+}
+
+/* The function template_write_register is used to write to hardware registers
+ * on the CAN chip. You should only have to edit this function if your hardware
+ * uses some specific write process.
+ */
+void msmcan_write_register(unsigned char data, unsigned long address)
+{
+ /* address is combination of base address shifted left by 16 and index */
+ can_spin_irqflags_t flags;
+
+ /* the msmcan card has two registers, the data register at 0x0
+ and the address register at 0x01 */
+
+ can_spin_lock_irqsave(&msmcan_port_lock,flags);
+ outb(address & 0xff, (address>>16)+1);
+ outb(data, address>>16);
+ can_spin_unlock_irqrestore(&msmcan_port_lock,flags);
+}
+
+/* The function template_read_register is used to read from hardware registers
+ * on the CAN chip. You should only have to edit this function if your hardware
+ * uses some specific read process.
+ */
+unsigned msmcan_read_register(unsigned long address)
+{
+ /* this is the same thing that the function write_register.
+ We use the two register, we write the address where we
+ want to read in a first time. In a second time we read the
+ data */
+ unsigned char ret;
+ can_spin_irqflags_t flags;
+
+
+ can_spin_lock_irqsave(&msmcan_port_lock,flags);
+ outb(address & 0xff, (address>>16)+1);
+ ret=inb(address>>16);
+ can_spin_unlock_irqrestore(&msmcan_port_lock,flags);
+ return ret;
+}
+
+
+ /* !!! Don't change this function !!! */
+int msmcan_register(struct hwspecops_t *hwspecops)
+{
+ hwspecops->request_io = msmcan_request_io;
+ hwspecops->release_io = msmcan_release_io;
+ hwspecops->reset = msmcan_reset;
+ hwspecops->init_hw_data = msmcan_init_hw_data;
+ hwspecops->init_chip_data = msmcan_init_chip_data;
+ hwspecops->init_obj_data = msmcan_init_obj_data;
+ hwspecops->write_register = msmcan_write_register;
+ hwspecops->read_register = msmcan_read_register;
+ hwspecops->program_irq = msmcan_program_irq;
+ return 0;
+}
projects / lincan.git / commitdiff