+++ /dev/null
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/types.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/init.h>
-#include <linux/uaccess.h>
-#include <linux/unistd.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/sched.h>
-
-#include <asm/irq.h>
-#include <asm/div64.h>
-
-#include <ifxmips.h>
-#include <ifxmips_irq.h>
-#include <ifxmips_cgu.h>
-#include <ifxmips_gptu.h>
-#include <ifxmips_pmu.h>
-
-#define MAX_NUM_OF_32BIT_TIMER_BLOCKS 6
-
-#ifdef TIMER1A
-#define FIRST_TIMER TIMER1A
-#else
-#define FIRST_TIMER 2
-#endif
-
-/*
- * GPTC divider is set or not.
- */
-#define GPTU_CLC_RMC_IS_SET 0
-
-/*
- * Timer Interrupt (IRQ)
- */
-/* Must be adjusted when ICU driver is available */
-#define TIMER_INTERRUPT (INT_NUM_IM3_IRL0 + 22)
-
-/*
- * Bits Operation
- */
-#define GET_BITS(x, msb, lsb) \
- (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb))
-#define SET_BITS(x, msb, lsb, value) \
- (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | \
- (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb)))
-
-/*
- * GPTU Register Mapping
- */
-#define IFXMIPS_GPTU (KSEG1 + 0x1E100A00)
-#define IFXMIPS_GPTU_CLC ((volatile u32 *)(IFXMIPS_GPTU + 0x0000))
-#define IFXMIPS_GPTU_ID ((volatile u32 *)(IFXMIPS_GPTU + 0x0008))
-#define IFXMIPS_GPTU_CON(n, X) ((volatile u32 *)(IFXMIPS_GPTU + 0x0010 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
-#define IFXMIPS_GPTU_RUN(n, X) ((volatile u32 *)(IFXMIPS_GPTU + 0x0018 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
-#define IFXMIPS_GPTU_RELOAD(n, X) ((volatile u32 *)(IFXMIPS_GPTU + 0x0020 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
-#define IFXMIPS_GPTU_COUNT(n, X) ((volatile u32 *)(IFXMIPS_GPTU + 0x0028 + ((X) * 4) + ((n) - 1) * 0x0020)) /* X must be either A or B */
-#define IFXMIPS_GPTU_IRNEN ((volatile u32 *)(IFXMIPS_GPTU + 0x00F4))
-#define IFXMIPS_GPTU_IRNICR ((volatile u32 *)(IFXMIPS_GPTU + 0x00F8))
-#define IFXMIPS_GPTU_IRNCR ((volatile u32 *)(IFXMIPS_GPTU + 0x00FC))
-
-/*
- * Clock Control Register
- */
-#define GPTU_CLC_SMC GET_BITS(*IFXMIPS_GPTU_CLC, 23, 16)
-#define GPTU_CLC_RMC GET_BITS(*IFXMIPS_GPTU_CLC, 15, 8)
-#define GPTU_CLC_FSOE (*IFXMIPS_GPTU_CLC & (1 << 5))
-#define GPTU_CLC_EDIS (*IFXMIPS_GPTU_CLC & (1 << 3))
-#define GPTU_CLC_SPEN (*IFXMIPS_GPTU_CLC & (1 << 2))
-#define GPTU_CLC_DISS (*IFXMIPS_GPTU_CLC & (1 << 1))
-#define GPTU_CLC_DISR (*IFXMIPS_GPTU_CLC & (1 << 0))
-
-#define GPTU_CLC_SMC_SET(value) SET_BITS(0, 23, 16, (value))
-#define GPTU_CLC_RMC_SET(value) SET_BITS(0, 15, 8, (value))
-#define GPTU_CLC_FSOE_SET(value) ((value) ? (1 << 5) : 0)
-#define GPTU_CLC_SBWE_SET(value) ((value) ? (1 << 4) : 0)
-#define GPTU_CLC_EDIS_SET(value) ((value) ? (1 << 3) : 0)
-#define GPTU_CLC_SPEN_SET(value) ((value) ? (1 << 2) : 0)
-#define GPTU_CLC_DISR_SET(value) ((value) ? (1 << 0) : 0)
-
-/*
- * ID Register
- */
-#define GPTU_ID_ID GET_BITS(*IFXMIPS_GPTU_ID, 15, 8)
-#define GPTU_ID_CFG GET_BITS(*IFXMIPS_GPTU_ID, 7, 5)
-#define GPTU_ID_REV GET_BITS(*IFXMIPS_GPTU_ID, 4, 0)
-
-/*
- * Control Register of Timer/Counter nX
- * n is the index of block (1 based index)
- * X is either A or B
- */
-#define GPTU_CON_SRC_EG(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 10))
-#define GPTU_CON_SRC_EXT(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 9))
-#define GPTU_CON_SYNC(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 8))
-#define GPTU_CON_EDGE(n, X) GET_BITS(*IFXMIPS_GPTU_CON(n, X), 7, 6)
-#define GPTU_CON_INV(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 5))
-#define GPTU_CON_EXT(n, X) (*IFXMIPS_GPTU_CON(n, A) & (1 << 4)) /* Timer/Counter B does not have this bit */
-#define GPTU_CON_STP(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 3))
-#define GPTU_CON_CNT(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 2))
-#define GPTU_CON_DIR(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 1))
-#define GPTU_CON_EN(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 0))
-
-#define GPTU_CON_SRC_EG_SET(value) ((value) ? 0 : (1 << 10))
-#define GPTU_CON_SRC_EXT_SET(value) ((value) ? (1 << 9) : 0)
-#define GPTU_CON_SYNC_SET(value) ((value) ? (1 << 8) : 0)
-#define GPTU_CON_EDGE_SET(value) SET_BITS(0, 7, 6, (value))
-#define GPTU_CON_INV_SET(value) ((value) ? (1 << 5) : 0)
-#define GPTU_CON_EXT_SET(value) ((value) ? (1 << 4) : 0)
-#define GPTU_CON_STP_SET(value) ((value) ? (1 << 3) : 0)
-#define GPTU_CON_CNT_SET(value) ((value) ? (1 << 2) : 0)
-#define GPTU_CON_DIR_SET(value) ((value) ? (1 << 1) : 0)
-
-#define GPTU_RUN_RL_SET(value) ((value) ? (1 << 2) : 0)
-#define GPTU_RUN_CEN_SET(value) ((value) ? (1 << 1) : 0)
-#define GPTU_RUN_SEN_SET(value) ((value) ? (1 << 0) : 0)
-
-#define GPTU_IRNEN_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
-#define GPTU_IRNCR_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0)
-
-#define TIMER_FLAG_MASK_SIZE(x) (x & 0x0001)
-#define TIMER_FLAG_MASK_TYPE(x) (x & 0x0002)
-#define TIMER_FLAG_MASK_STOP(x) (x & 0x0004)
-#define TIMER_FLAG_MASK_DIR(x) (x & 0x0008)
-#define TIMER_FLAG_NONE_EDGE 0x0000
-#define TIMER_FLAG_MASK_EDGE(x) (x & 0x0030)
-#define TIMER_FLAG_REAL 0x0000
-#define TIMER_FLAG_INVERT 0x0040
-#define TIMER_FLAG_MASK_INVERT(x) (x & 0x0040)
-#define TIMER_FLAG_MASK_TRIGGER(x) (x & 0x0070)
-#define TIMER_FLAG_MASK_SYNC(x) (x & 0x0080)
-#define TIMER_FLAG_CALLBACK_IN_HB 0x0200
-#define TIMER_FLAG_MASK_HANDLE(x) (x & 0x0300)
-#define TIMER_FLAG_MASK_SRC(x) (x & 0x1000)
-
-struct timer_dev_timer {
- unsigned int f_irq_on;
- unsigned int irq;
- unsigned int flag;
- unsigned long arg1;
- unsigned long arg2;
-};
-
-struct timer_dev {
- struct mutex gptu_mutex;
- unsigned int number_of_timers;
- unsigned int occupation;
- unsigned int f_gptu_on;
- struct timer_dev_timer timer[MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2];
-};
-
-static int gptu_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
-static int gptu_open(struct inode *, struct file *);
-static int gptu_release(struct inode *, struct file *);
-
-static struct file_operations gptu_fops = {
- .owner = THIS_MODULE,
- .ioctl = gptu_ioctl,
- .open = gptu_open,
- .release = gptu_release
-};
-
-static struct miscdevice gptu_miscdev = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "gptu",
- .fops = &gptu_fops,
-};
-
-static struct timer_dev timer_dev;
-
-static irqreturn_t timer_irq_handler(int irq, void *p)
-{
- unsigned int timer;
- unsigned int flag;
- struct timer_dev_timer *dev_timer = (struct timer_dev_timer *)p;
-
- timer = irq - TIMER_INTERRUPT;
- if (timer < timer_dev.number_of_timers
- && dev_timer == &timer_dev.timer[timer]) {
- /* Clear interrupt. */
- ifxmips_w32(1 << timer, IFXMIPS_GPTU_IRNCR);
-
- /* Call user hanler or signal. */
- flag = dev_timer->flag;
- if (!(timer & 0x01)
- || TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
- /* 16-bit timer or timer A of 32-bit timer */
- switch (TIMER_FLAG_MASK_HANDLE(flag)) {
- case TIMER_FLAG_CALLBACK_IN_IRQ:
- case TIMER_FLAG_CALLBACK_IN_HB:
- if (dev_timer->arg1)
- (*(timer_callback)dev_timer->arg1)(dev_timer->arg2);
- break;
- case TIMER_FLAG_SIGNAL:
- send_sig((int)dev_timer->arg2, (struct task_struct *)dev_timer->arg1, 0);
- break;
- }
- }
- }
- return IRQ_HANDLED;
-}
-
-static inline void ifxmips_enable_gptu(void)
-{
- ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_GPT);
-
- /* Set divider as 1, disable write protection for SPEN, enable module. */
- *IFXMIPS_GPTU_CLC =
- GPTU_CLC_SMC_SET(0x00) |
- GPTU_CLC_RMC_SET(0x01) |
- GPTU_CLC_FSOE_SET(0) |
- GPTU_CLC_SBWE_SET(1) |
- GPTU_CLC_EDIS_SET(0) |
- GPTU_CLC_SPEN_SET(0) |
- GPTU_CLC_DISR_SET(0);
-}
-
-static inline void ifxmips_disable_gptu(void)
-{
- ifxmips_w32(0x00, IFXMIPS_GPTU_IRNEN);
- ifxmips_w32(0xfff, IFXMIPS_GPTU_IRNCR);
-
- /* Set divider as 0, enable write protection for SPEN, disable module. */
- *IFXMIPS_GPTU_CLC =
- GPTU_CLC_SMC_SET(0x00) |
- GPTU_CLC_RMC_SET(0x00) |
- GPTU_CLC_FSOE_SET(0) |
- GPTU_CLC_SBWE_SET(0) |
- GPTU_CLC_EDIS_SET(0) |
- GPTU_CLC_SPEN_SET(0) |
- GPTU_CLC_DISR_SET(1);
-
- ifxmips_pmu_disable(IFXMIPS_PMU_PWDCR_GPT);
-}
-
-int ifxmips_request_timer(unsigned int timer, unsigned int flag,
- unsigned long value, unsigned long arg1, unsigned long arg2)
-{
- int ret = 0;
- unsigned int con_reg, irnen_reg;
- int n, X;
-
- if (timer >= FIRST_TIMER + timer_dev.number_of_timers)
- return -EINVAL;
-
- printk(KERN_INFO "request_timer(%d, 0x%08X, %lu)...",
- timer, flag, value);
-
- if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT)
- value &= 0xFFFF;
- else
- timer &= ~0x01;
-
- mutex_lock(&timer_dev.gptu_mutex);
-
- /*
- * Allocate timer.
- */
- if (timer < FIRST_TIMER) {
- unsigned int mask;
- unsigned int shift;
- /* This takes care of TIMER1B which is the only choice for Voice TAPI system */
- unsigned int offset = TIMER2A;
-
- /*
- * Pick up a free timer.
- */
- if (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) {
- mask = 1 << offset;
- shift = 1;
- } else {
- mask = 3 << offset;
- shift = 2;
- }
- for (timer = offset;
- timer < offset + timer_dev.number_of_timers;
- timer += shift, mask <<= shift)
- if (!(timer_dev.occupation & mask)) {
- timer_dev.occupation |= mask;
- break;
- }
- if (timer >= offset + timer_dev.number_of_timers) {
- printk("failed![%d]\n", __LINE__);
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EINVAL;
- } else
- ret = timer;
- } else {
- register unsigned int mask;
-
- /*
- * Check if the requested timer is free.
- */
- mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
- if ((timer_dev.occupation & mask)) {
- printk("failed![%d] mask %#x, timer_dev.occupation %#x\n",
- __LINE__, mask, timer_dev.occupation);
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EBUSY;
- } else {
- timer_dev.occupation |= mask;
- ret = 0;
- }
- }
-
- /*
- * Prepare control register value.
- */
- switch (TIMER_FLAG_MASK_EDGE(flag)) {
- default:
- case TIMER_FLAG_NONE_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x00);
- break;
- case TIMER_FLAG_RISE_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x01);
- break;
- case TIMER_FLAG_FALL_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x02);
- break;
- case TIMER_FLAG_ANY_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x03);
- break;
- }
- if (TIMER_FLAG_MASK_TYPE(flag) == TIMER_FLAG_TIMER)
- con_reg |=
- TIMER_FLAG_MASK_SRC(flag) ==
- TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) :
- GPTU_CON_SRC_EXT_SET(0);
- else
- con_reg |=
- TIMER_FLAG_MASK_SRC(flag) ==
- TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) :
- GPTU_CON_SRC_EG_SET(0);
- con_reg |=
- TIMER_FLAG_MASK_SYNC(flag) ==
- TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) :
- GPTU_CON_SYNC_SET(1);
- con_reg |=
- TIMER_FLAG_MASK_INVERT(flag) ==
- TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
- con_reg |=
- TIMER_FLAG_MASK_SIZE(flag) ==
- TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) :
- GPTU_CON_EXT_SET(1);
- con_reg |=
- TIMER_FLAG_MASK_STOP(flag) ==
- TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
- con_reg |=
- TIMER_FLAG_MASK_TYPE(flag) ==
- TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) :
- GPTU_CON_CNT_SET(1);
- con_reg |=
- TIMER_FLAG_MASK_DIR(flag) ==
- TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
-
- /*
- * Fill up running data.
- */
- timer_dev.timer[timer - FIRST_TIMER].flag = flag;
- timer_dev.timer[timer - FIRST_TIMER].arg1 = arg1;
- timer_dev.timer[timer - FIRST_TIMER].arg2 = arg2;
- if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
- timer_dev.timer[timer - FIRST_TIMER + 1].flag = flag;
-
- /*
- * Enable GPTU module.
- */
- if (!timer_dev.f_gptu_on) {
- ifxmips_enable_gptu();
- timer_dev.f_gptu_on = 1;
- }
-
- /*
- * Enable IRQ.
- */
- if (TIMER_FLAG_MASK_HANDLE(flag) != TIMER_FLAG_NO_HANDLE) {
- if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL)
- timer_dev.timer[timer - FIRST_TIMER].arg1 =
- (unsigned long) find_task_by_vpid((int) arg1);
-
- irnen_reg = 1 << (timer - FIRST_TIMER);
-
- if (TIMER_FLAG_MASK_HANDLE(flag) == TIMER_FLAG_SIGNAL
- || (TIMER_FLAG_MASK_HANDLE(flag) ==
- TIMER_FLAG_CALLBACK_IN_IRQ
- && timer_dev.timer[timer - FIRST_TIMER].arg1)) {
- enable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
- timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 1;
- }
- } else
- irnen_reg = 0;
-
- /*
- * Write config register, reload value and enable interrupt.
- */
- n = timer >> 1;
- X = timer & 0x01;
- *IFXMIPS_GPTU_CON(n, X) = con_reg;
- *IFXMIPS_GPTU_RELOAD(n, X) = value;
- /* printk("reload value = %d\n", (u32)value); */
- *IFXMIPS_GPTU_IRNEN |= irnen_reg;
-
- mutex_unlock(&timer_dev.gptu_mutex);
- printk("successful!\n");
- return ret;
-}
-EXPORT_SYMBOL(ifxmips_request_timer);
-
-int ifxmips_free_timer(unsigned int timer)
-{
- unsigned int flag;
- unsigned int mask;
- int n, X;
-
- if (!timer_dev.f_gptu_on)
- return -EINVAL;
-
- if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
- return -EINVAL;
-
- mutex_lock(&timer_dev.gptu_mutex);
-
- flag = timer_dev.timer[timer - FIRST_TIMER].flag;
- if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
- timer &= ~0x01;
-
- mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
- if (((timer_dev.occupation & mask) ^ mask)) {
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EINVAL;
- }
-
- n = timer >> 1;
- X = timer & 0x01;
-
- if (GPTU_CON_EN(n, X))
- *IFXMIPS_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
-
- *IFXMIPS_GPTU_IRNEN &= ~GPTU_IRNEN_TC_SET(n, X, 1);
- *IFXMIPS_GPTU_IRNCR |= GPTU_IRNCR_TC_SET(n, X, 1);
-
- if (timer_dev.timer[timer - FIRST_TIMER].f_irq_on) {
- disable_irq(timer_dev.timer[timer - FIRST_TIMER].irq);
- timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 0;
- }
-
- timer_dev.occupation &= ~mask;
- if (!timer_dev.occupation && timer_dev.f_gptu_on) {
- ifxmips_disable_gptu();
- timer_dev.f_gptu_on = 0;
- }
-
- mutex_unlock(&timer_dev.gptu_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_free_timer);
-
-int ifxmips_start_timer(unsigned int timer, int is_resume)
-{
- unsigned int flag;
- unsigned int mask;
- int n, X;
-
- if (!timer_dev.f_gptu_on)
- return -EINVAL;
-
- if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
- return -EINVAL;
-
- mutex_lock(&timer_dev.gptu_mutex);
-
- flag = timer_dev.timer[timer - FIRST_TIMER].flag;
- if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
- timer &= ~0x01;
-
- mask = (TIMER_FLAG_MASK_SIZE(flag) ==
- TIMER_FLAG_16BIT ? 1 : 3) << timer;
- if (((timer_dev.occupation & mask) ^ mask)) {
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EINVAL;
- }
-
- n = timer >> 1;
- X = timer & 0x01;
-
- *IFXMIPS_GPTU_RUN(n, X) = GPTU_RUN_RL_SET(!is_resume) | GPTU_RUN_SEN_SET(1);
-
- mutex_unlock(&timer_dev.gptu_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_start_timer);
-
-int ifxmips_stop_timer(unsigned int timer)
-{
- unsigned int flag;
- unsigned int mask;
- int n, X;
-
- if (!timer_dev.f_gptu_on)
- return -EINVAL;
-
- if (timer < FIRST_TIMER
- || timer >= FIRST_TIMER + timer_dev.number_of_timers)
- return -EINVAL;
-
- mutex_lock(&timer_dev.gptu_mutex);
-
- flag = timer_dev.timer[timer - FIRST_TIMER].flag;
- if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
- timer &= ~0x01;
-
- mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
- if (((timer_dev.occupation & mask) ^ mask)) {
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EINVAL;
- }
-
- n = timer >> 1;
- X = timer & 0x01;
-
- *IFXMIPS_GPTU_RUN(n, X) = GPTU_RUN_CEN_SET(1);
-
- mutex_unlock(&timer_dev.gptu_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_stop_timer);
-
-int ifxmips_reset_counter_flags(u32 timer, u32 flags)
-{
- unsigned int oflag;
- unsigned int mask, con_reg;
- int n, X;
-
- if (!timer_dev.f_gptu_on)
- return -EINVAL;
-
- if (timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers)
- return -EINVAL;
-
- mutex_lock(&timer_dev.gptu_mutex);
-
- oflag = timer_dev.timer[timer - FIRST_TIMER].flag;
- if (TIMER_FLAG_MASK_SIZE(oflag) != TIMER_FLAG_16BIT)
- timer &= ~0x01;
-
- mask = (TIMER_FLAG_MASK_SIZE(oflag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
- if (((timer_dev.occupation & mask) ^ mask)) {
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EINVAL;
- }
-
- switch (TIMER_FLAG_MASK_EDGE(flags)) {
- default:
- case TIMER_FLAG_NONE_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x00);
- break;
- case TIMER_FLAG_RISE_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x01);
- break;
- case TIMER_FLAG_FALL_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x02);
- break;
- case TIMER_FLAG_ANY_EDGE:
- con_reg = GPTU_CON_EDGE_SET(0x03);
- break;
- }
- if (TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER)
- con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET(1) : GPTU_CON_SRC_EXT_SET(0);
- else
- con_reg |= TIMER_FLAG_MASK_SRC(flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET(1) : GPTU_CON_SRC_EG_SET(0);
- con_reg |= TIMER_FLAG_MASK_SYNC(flags) == TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET(0) : GPTU_CON_SYNC_SET(1);
- con_reg |= TIMER_FLAG_MASK_INVERT(flags) == TIMER_FLAG_REAL ? GPTU_CON_INV_SET(0) : GPTU_CON_INV_SET(1);
- con_reg |= TIMER_FLAG_MASK_SIZE(flags) == TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET(0) : GPTU_CON_EXT_SET(1);
- con_reg |= TIMER_FLAG_MASK_STOP(flags) == TIMER_FLAG_ONCE ? GPTU_CON_STP_SET(1) : GPTU_CON_STP_SET(0);
- con_reg |= TIMER_FLAG_MASK_TYPE(flags) == TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET(0) : GPTU_CON_CNT_SET(1);
- con_reg |= TIMER_FLAG_MASK_DIR(flags) == TIMER_FLAG_UP ? GPTU_CON_DIR_SET(1) : GPTU_CON_DIR_SET(0);
-
- timer_dev.timer[timer - FIRST_TIMER].flag = flags;
- if (TIMER_FLAG_MASK_SIZE(flags) != TIMER_FLAG_16BIT)
- timer_dev.timer[timer - FIRST_TIMER + 1].flag = flags;
-
- n = timer >> 1;
- X = timer & 0x01;
-
- *IFXMIPS_GPTU_CON(n, X) = con_reg;
- smp_wmb();
- printk(KERN_INFO "[%s]: counter%d oflags %#x, nflags %#x, GPTU_CON %#x\n", __func__, timer, oflag, flags, *IFXMIPS_GPTU_CON(n, X));
- mutex_unlock(&timer_dev.gptu_mutex);
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_reset_counter_flags);
-
-int ifxmips_get_count_value(unsigned int timer, unsigned long *value)
-{
- unsigned int flag;
- unsigned int mask;
- int n, X;
-
- if (!timer_dev.f_gptu_on)
- return -EINVAL;
-
- if (timer < FIRST_TIMER
- || timer >= FIRST_TIMER + timer_dev.number_of_timers)
- return -EINVAL;
-
- mutex_lock(&timer_dev.gptu_mutex);
-
- flag = timer_dev.timer[timer - FIRST_TIMER].flag;
- if (TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT)
- timer &= ~0x01;
-
- mask = (TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer;
- if (((timer_dev.occupation & mask) ^ mask)) {
- mutex_unlock(&timer_dev.gptu_mutex);
- return -EINVAL;
- }
-
- n = timer >> 1;
- X = timer & 0x01;
-
- *value = *IFXMIPS_GPTU_COUNT(n, X);
-
- mutex_unlock(&timer_dev.gptu_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ifxmips_get_count_value);
-
-u32 ifxmips_cal_divider(unsigned long freq)
-{
- u64 module_freq, fpi = cgu_get_fpi_bus_clock(2);
- u32 clock_divider = 1;
- module_freq = fpi * 1000;
- do_div(module_freq, clock_divider * freq);
- return module_freq;
-}
-EXPORT_SYMBOL(ifxmips_cal_divider);
-
-int ifxmips_set_timer(unsigned int timer, unsigned int freq, int is_cyclic,
- int is_ext_src, unsigned int handle_flag, unsigned long arg1,
- unsigned long arg2)
-{
- unsigned long divider;
- unsigned int flag;
-
- divider = ifxmips_cal_divider(freq);
- if (divider == 0)
- return -EINVAL;
- flag = ((divider & ~0xFFFF) ? TIMER_FLAG_32BIT : TIMER_FLAG_16BIT)
- | (is_cyclic ? TIMER_FLAG_CYCLIC : TIMER_FLAG_ONCE)
- | (is_ext_src ? TIMER_FLAG_EXT_SRC : TIMER_FLAG_INT_SRC)
- | TIMER_FLAG_TIMER | TIMER_FLAG_DOWN
- | TIMER_FLAG_MASK_HANDLE(handle_flag);
-
- printk(KERN_INFO "ifxmips_set_timer(%d, %d), divider = %lu\n",
- timer, freq, divider);
- return ifxmips_request_timer(timer, flag, divider, arg1, arg2);
-}
-EXPORT_SYMBOL(ifxmips_set_timer);
-
-int ifxmips_set_counter(unsigned int timer, unsigned int flag, u32 reload,
- unsigned long arg1, unsigned long arg2)
-{
- printk(KERN_INFO "ifxmips_set_counter(%d, %#x, %d)\n", timer, flag, reload);
- return ifxmips_request_timer(timer, flag, reload, arg1, arg2);
-}
-EXPORT_SYMBOL(ifxmips_set_counter);
-
-static int gptu_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- int ret;
- struct gptu_ioctl_param param;
-
- if (!access_ok(VERIFY_READ, arg, sizeof(struct gptu_ioctl_param)))
- return -EFAULT;
- copy_from_user(¶m, (void *) arg, sizeof(param));
-
- if ((((cmd == GPTU_REQUEST_TIMER || cmd == GPTU_SET_TIMER
- || GPTU_SET_COUNTER) && param.timer < 2)
- || cmd == GPTU_GET_COUNT_VALUE || cmd == GPTU_CALCULATE_DIVIDER)
- && !access_ok(VERIFY_WRITE, arg,
- sizeof(struct gptu_ioctl_param)))
- return -EFAULT;
-
- switch (cmd) {
- case GPTU_REQUEST_TIMER:
- ret = ifxmips_request_timer(param.timer, param.flag, param.value,
- (unsigned long) param.pid,
- (unsigned long) param.sig);
- if (ret > 0) {
- copy_to_user(&((struct gptu_ioctl_param *) arg)->
- timer, &ret, sizeof(&ret));
- ret = 0;
- }
- break;
- case GPTU_FREE_TIMER:
- ret = ifxmips_free_timer(param.timer);
- break;
- case GPTU_START_TIMER:
- ret = ifxmips_start_timer(param.timer, param.flag);
- break;
- case GPTU_STOP_TIMER:
- ret = ifxmips_stop_timer(param.timer);
- break;
- case GPTU_GET_COUNT_VALUE:
- ret = ifxmips_get_count_value(param.timer, ¶m.value);
- if (!ret)
- copy_to_user(&((struct gptu_ioctl_param *) arg)->
- value, ¶m.value,
- sizeof(param.value));
- break;
- case GPTU_CALCULATE_DIVIDER:
- param.value = ifxmips_cal_divider(param.value);
- if (param.value == 0)
- ret = -EINVAL;
- else {
- copy_to_user(&((struct gptu_ioctl_param *) arg)->
- value, ¶m.value,
- sizeof(param.value));
- ret = 0;
- }
- break;
- case GPTU_SET_TIMER:
- ret = ifxmips_set_timer(param.timer, param.value,
- TIMER_FLAG_MASK_STOP(param.flag) !=
- TIMER_FLAG_ONCE ? 1 : 0,
- TIMER_FLAG_MASK_SRC(param.flag) ==
- TIMER_FLAG_EXT_SRC ? 1 : 0,
- TIMER_FLAG_MASK_HANDLE(param.flag) ==
- TIMER_FLAG_SIGNAL ? TIMER_FLAG_SIGNAL :
- TIMER_FLAG_NO_HANDLE,
- (unsigned long) param.pid,
- (unsigned long) param.sig);
- if (ret > 0) {
- copy_to_user(&((struct gptu_ioctl_param *) arg)->
- timer, &ret, sizeof(&ret));
- ret = 0;
- }
- break;
- case GPTU_SET_COUNTER:
- ifxmips_set_counter(param.timer, param.flag, param.value, 0, 0);
- if (ret > 0) {
- copy_to_user(&((struct gptu_ioctl_param *) arg)->
- timer, &ret, sizeof(&ret));
- ret = 0;
- }
- break;
- default:
- ret = -ENOTTY;
- }
-
- return ret;
-}
-
-static int gptu_open(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-static int gptu_release(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-int __init ifxmips_gptu_init(void)
-{
- int ret;
- unsigned int i;
-
- ifxmips_w32(0, IFXMIPS_GPTU_IRNEN);
- ifxmips_w32(0xfff, IFXMIPS_GPTU_IRNCR);
-
- memset(&timer_dev, 0, sizeof(timer_dev));
- mutex_init(&timer_dev.gptu_mutex);
-
- ifxmips_enable_gptu();
- timer_dev.number_of_timers = GPTU_ID_CFG * 2;
- ifxmips_disable_gptu();
- if (timer_dev.number_of_timers > MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2)
- timer_dev.number_of_timers = MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2;
- printk(KERN_INFO "gptu: totally %d 16-bit timers/counters\n", timer_dev.number_of_timers);
-
- ret = misc_register(&gptu_miscdev);
- if (ret) {
- printk(KERN_ERR "gptu: can't misc_register, get error %d\n", -ret);
- return ret;
- } else {
- printk(KERN_INFO "gptu: misc_register on minor %d\n", gptu_miscdev.minor);
- }
-
- for (i = 0; i < timer_dev.number_of_timers; i++) {
- ret = request_irq(TIMER_INTERRUPT + i, timer_irq_handler, IRQF_TIMER, gptu_miscdev.name, &timer_dev.timer[i]);
- if (ret) {
- for (; i >= 0; i--)
- free_irq(TIMER_INTERRUPT + i, &timer_dev.timer[i]);
- misc_deregister(&gptu_miscdev);
- printk(KERN_ERR "gptu: failed in requesting irq (%d), get error %d\n", i, -ret);
- return ret;
- } else {
- timer_dev.timer[i].irq = TIMER_INTERRUPT + i;
- disable_irq(timer_dev.timer[i].irq);
- printk(KERN_INFO "gptu: succeeded to request irq %d\n", timer_dev.timer[i].irq);
- }
- }
-
- return 0;
-}
-
-void __exit ifxmips_gptu_exit(void)
-{
- unsigned int i;
-
- for (i = 0; i < timer_dev.number_of_timers; i++) {
- if (timer_dev.timer[i].f_irq_on)
- disable_irq(timer_dev.timer[i].irq);
- free_irq(timer_dev.timer[i].irq, &timer_dev.timer[i]);
- }
- ifxmips_disable_gptu();
- misc_deregister(&gptu_miscdev);
-}
-
-module_init(ifxmips_gptu_init);
-module_exit(ifxmips_gptu_exit);
projects / openwrt / svn-archive / archive.git / blobdiff