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-rw-r--r--arch/blackfin/mach-common/ints-priority-sc.c577
1 files changed, 0 insertions, 577 deletions
diff --git a/arch/blackfin/mach-common/ints-priority-sc.c b/arch/blackfin/mach-common/ints-priority-sc.c
deleted file mode 100644
index 34b62288ec3..00000000000
--- a/arch/blackfin/mach-common/ints-priority-sc.c
+++ /dev/null
@@ -1,577 +0,0 @@
-/*
- * File: arch/blackfin/mach-common/ints-priority-sc.c
- * Based on:
- * Author:
- *
- * Created: ?
- * Description: Set up the interupt priorities
- *
- * Modified:
- * 1996 Roman Zippel
- * 1999 D. Jeff Dionne <jeff@uclinux.org>
- * 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
- * 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
- * 2003 Metrowerks/Motorola
- * 2003 Bas Vermeulen <bas@buyways.nl>
- * Copyright 2004-2006 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * 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 of the License, 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, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include <linux/kernel_stat.h>
-#include <linux/seq_file.h>
-#include <linux/irq.h>
-#ifdef CONFIG_KGDB
-#include <linux/kgdb.h>
-#endif
-#include <asm/traps.h>
-#include <asm/blackfin.h>
-#include <asm/gpio.h>
-#include <asm/irq_handler.h>
-
-#ifdef BF537_FAMILY
-# define BF537_GENERIC_ERROR_INT_DEMUX
-#else
-# undef BF537_GENERIC_ERROR_INT_DEMUX
-#endif
-
-/*
- * NOTES:
- * - we have separated the physical Hardware interrupt from the
- * levels that the LINUX kernel sees (see the description in irq.h)
- * -
- */
-
-unsigned long irq_flags = 0;
-
-/* The number of spurious interrupts */
-atomic_t num_spurious;
-
-struct ivgx {
- /* irq number for request_irq, available in mach-bf533/irq.h */
- int irqno;
- /* corresponding bit in the SIC_ISR register */
- int isrflag;
-} ivg_table[NR_PERI_INTS];
-
-struct ivg_slice {
- /* position of first irq in ivg_table for given ivg */
- struct ivgx *ifirst;
- struct ivgx *istop;
-} ivg7_13[IVG13 - IVG7 + 1];
-
-static void search_IAR(void);
-
-/*
- * Search SIC_IAR and fill tables with the irqvalues
- * and their positions in the SIC_ISR register.
- */
-static void __init search_IAR(void)
-{
- unsigned ivg, irq_pos = 0;
- for (ivg = 0; ivg <= IVG13 - IVG7; ivg++) {
- int irqn;
-
- ivg7_13[ivg].istop = ivg7_13[ivg].ifirst =
- &ivg_table[irq_pos];
-
- for (irqn = 0; irqn < NR_PERI_INTS; irqn++) {
- int iar_shift = (irqn & 7) * 4;
- if (ivg ==
- (0xf &
- bfin_read32((unsigned long *) SIC_IAR0 +
- (irqn >> 3)) >> iar_shift)) {
- ivg_table[irq_pos].irqno = IVG7 + irqn;
- ivg_table[irq_pos].isrflag = 1 << irqn;
- ivg7_13[ivg].istop++;
- irq_pos++;
- }
- }
- }
-}
-
-/*
- * This is for BF533 internal IRQs
- */
-
-static void ack_noop(unsigned int irq)
-{
- /* Dummy function. */
-}
-
-static void bfin_core_mask_irq(unsigned int irq)
-{
- irq_flags &= ~(1 << irq);
- if (!irqs_disabled())
- local_irq_enable();
-}
-
-static void bfin_core_unmask_irq(unsigned int irq)
-{
- irq_flags |= 1 << irq;
- /*
- * If interrupts are enabled, IMASK must contain the same value
- * as irq_flags. Make sure that invariant holds. If interrupts
- * are currently disabled we need not do anything; one of the
- * callers will take care of setting IMASK to the proper value
- * when reenabling interrupts.
- * local_irq_enable just does "STI irq_flags", so it's exactly
- * what we need.
- */
- if (!irqs_disabled())
- local_irq_enable();
- return;
-}
-
-static void bfin_internal_mask_irq(unsigned int irq)
-{
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
- ~(1 << (irq - (IRQ_CORETMR + 1))));
- SSYNC();
-}
-
-static void bfin_internal_unmask_irq(unsigned int irq)
-{
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() |
- (1 << (irq - (IRQ_CORETMR + 1))));
- SSYNC();
-}
-
-static struct irq_chip bfin_core_irqchip = {
- .ack = ack_noop,
- .mask = bfin_core_mask_irq,
- .unmask = bfin_core_unmask_irq,
-};
-
-static struct irq_chip bfin_internal_irqchip = {
- .ack = ack_noop,
- .mask = bfin_internal_mask_irq,
- .unmask = bfin_internal_unmask_irq,
-};
-
-#ifdef BF537_GENERIC_ERROR_INT_DEMUX
-static int error_int_mask;
-
-static void bfin_generic_error_ack_irq(unsigned int irq)
-{
-
-}
-
-static void bfin_generic_error_mask_irq(unsigned int irq)
-{
- error_int_mask &= ~(1L << (irq - IRQ_PPI_ERROR));
-
- if (!error_int_mask) {
- local_irq_disable();
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
- ~(1 <<
- (IRQ_GENERIC_ERROR -
- (IRQ_CORETMR + 1))));
- SSYNC();
- local_irq_enable();
- }
-}
-
-static void bfin_generic_error_unmask_irq(unsigned int irq)
-{
- local_irq_disable();
- bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() | 1 <<
- (IRQ_GENERIC_ERROR - (IRQ_CORETMR + 1)));
- SSYNC();
- local_irq_enable();
-
- error_int_mask |= 1L << (irq - IRQ_PPI_ERROR);
-}
-
-static struct irq_chip bfin_generic_error_irqchip = {
- .ack = bfin_generic_error_ack_irq,
- .mask = bfin_generic_error_mask_irq,
- .unmask = bfin_generic_error_unmask_irq,
-};
-
-static void bfin_demux_error_irq(unsigned int int_err_irq,
- struct irq_desc *intb_desc)
-{
- int irq = 0;
-
- SSYNC();
-
-#if (defined(CONFIG_BF537) || defined(CONFIG_BF536))
- if (bfin_read_EMAC_SYSTAT() & EMAC_ERR_MASK)
- irq = IRQ_MAC_ERROR;
- else
-#endif
- if (bfin_read_SPORT0_STAT() & SPORT_ERR_MASK)
- irq = IRQ_SPORT0_ERROR;
- else if (bfin_read_SPORT1_STAT() & SPORT_ERR_MASK)
- irq = IRQ_SPORT1_ERROR;
- else if (bfin_read_PPI_STATUS() & PPI_ERR_MASK)
- irq = IRQ_PPI_ERROR;
- else if (bfin_read_CAN_GIF() & CAN_ERR_MASK)
- irq = IRQ_CAN_ERROR;
- else if (bfin_read_SPI_STAT() & SPI_ERR_MASK)
- irq = IRQ_SPI_ERROR;
- else if ((bfin_read_UART0_IIR() & UART_ERR_MASK_STAT1) &&
- (bfin_read_UART0_IIR() & UART_ERR_MASK_STAT0))
- irq = IRQ_UART0_ERROR;
- else if ((bfin_read_UART1_IIR() & UART_ERR_MASK_STAT1) &&
- (bfin_read_UART1_IIR() & UART_ERR_MASK_STAT0))
- irq = IRQ_UART1_ERROR;
-
- if (irq) {
- if (error_int_mask & (1L << (irq - IRQ_PPI_ERROR))) {
- struct irq_desc *desc = irq_desc + irq;
- desc->handle_irq(irq, desc);
- } else {
-
- switch (irq) {
- case IRQ_PPI_ERROR:
- bfin_write_PPI_STATUS(PPI_ERR_MASK);
- break;
-#if (defined(CONFIG_BF537) || defined(CONFIG_BF536))
- case IRQ_MAC_ERROR:
- bfin_write_EMAC_SYSTAT(EMAC_ERR_MASK);
- break;
-#endif
- case IRQ_SPORT0_ERROR:
- bfin_write_SPORT0_STAT(SPORT_ERR_MASK);
- break;
-
- case IRQ_SPORT1_ERROR:
- bfin_write_SPORT1_STAT(SPORT_ERR_MASK);
- break;
-
- case IRQ_CAN_ERROR:
- bfin_write_CAN_GIS(CAN_ERR_MASK);
- break;
-
- case IRQ_SPI_ERROR:
- bfin_write_SPI_STAT(SPI_ERR_MASK);
- break;
-
- default:
- break;
- }
-
- pr_debug("IRQ %d:"
- " MASKED PERIPHERAL ERROR INTERRUPT ASSERTED\n",
- irq);
- }
- } else
- printk(KERN_ERR
- "%s : %s : LINE %d :\nIRQ ?: PERIPHERAL ERROR"
- " INTERRUPT ASSERTED BUT NO SOURCE FOUND\n",
- __FUNCTION__, __FILE__, __LINE__);
-
-
-}
-#endif /* BF537_GENERIC_ERROR_INT_DEMUX */
-
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
-
-static unsigned short gpio_enabled[gpio_bank(MAX_BLACKFIN_GPIOS)];
-static unsigned short gpio_edge_triggered[gpio_bank(MAX_BLACKFIN_GPIOS)];
-
-static void bfin_gpio_ack_irq(unsigned int irq)
-{
- u16 gpionr = irq - IRQ_PF0;
-
- if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) {
- set_gpio_data(gpionr, 0);
- SSYNC();
- }
-}
-
-static void bfin_gpio_mask_ack_irq(unsigned int irq)
-{
- u16 gpionr = irq - IRQ_PF0;
-
- if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) {
- set_gpio_data(gpionr, 0);
- SSYNC();
- }
-
- set_gpio_maska(gpionr, 0);
- SSYNC();
-}
-
-static void bfin_gpio_mask_irq(unsigned int irq)
-{
- set_gpio_maska(irq - IRQ_PF0, 0);
- SSYNC();
-}
-
-static void bfin_gpio_unmask_irq(unsigned int irq)
-{
- set_gpio_maska(irq - IRQ_PF0, 1);
- SSYNC();
-}
-
-static unsigned int bfin_gpio_irq_startup(unsigned int irq)
-{
- unsigned int ret;
- u16 gpionr = irq - IRQ_PF0;
-
- if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
- ret = gpio_request(gpionr, NULL);
- if (ret)
- return ret;
- }
-
- gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
- bfin_gpio_unmask_irq(irq);
-
- return ret;
-}
-
-static void bfin_gpio_irq_shutdown(unsigned int irq)
-{
- bfin_gpio_mask_irq(irq);
- gpio_free(irq - IRQ_PF0);
- gpio_enabled[gpio_bank(irq - IRQ_PF0)] &= ~gpio_bit(irq - IRQ_PF0);
-}
-
-static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
-{
-
- unsigned int ret;
- u16 gpionr = irq - IRQ_PF0;
-
- if (type == IRQ_TYPE_PROBE) {
- /* only probe unenabled GPIO interrupt lines */
- if (gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))
- return 0;
- type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
- }
-
- if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING |
- IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
- {
- if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
- ret = gpio_request(gpionr, NULL);
- if (ret)
- return ret;
- }
-
- gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
- } else {
- gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
- return 0;
- }
-
- set_gpio_dir(gpionr, 0);
- set_gpio_inen(gpionr, 1);
-
- if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
- gpio_edge_triggered[gpio_bank(gpionr)] |= gpio_bit(gpionr);
- set_gpio_edge(gpionr, 1);
- } else {
- set_gpio_edge(gpionr, 0);
- gpio_edge_triggered[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
- }
-
- if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- == (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- set_gpio_both(gpionr, 1);
- else
- set_gpio_both(gpionr, 0);
-
- if ((type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW)))
- set_gpio_polar(gpionr, 1); /* low or falling edge denoted by one */
- else
- set_gpio_polar(gpionr, 0); /* high or rising edge denoted by zero */
-
- SSYNC();
-
- if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- set_irq_handler(irq, handle_edge_irq);
- else
- set_irq_handler(irq, handle_level_irq);
-
- return 0;
-}
-
-
-static struct irq_chip bfin_gpio_irqchip = {
- .ack = bfin_gpio_ack_irq,
- .mask = bfin_gpio_mask_irq,
- .mask_ack = bfin_gpio_mask_ack_irq,
- .unmask = bfin_gpio_unmask_irq,
- .set_type = bfin_gpio_irq_type,
- .startup = bfin_gpio_irq_startup,
- .shutdown = bfin_gpio_irq_shutdown
-};
-
-static void bfin_demux_gpio_irq(unsigned int intb_irq,
- struct irq_desc *intb_desc)
-{
- u16 i;
-
- for (i = 0; i < MAX_BLACKFIN_GPIOS; i+=16) {
- int irq = IRQ_PF0 + i;
- int flag_d = get_gpiop_data(i);
- int mask =
- flag_d & (gpio_enabled[gpio_bank(i)] &
- get_gpiop_maska(i));
-
- while (mask) {
- if (mask & 1) {
- struct irq_desc *desc = irq_desc + irq;
- desc->handle_irq(irq, desc);
- }
- irq++;
- mask >>= 1;
- }
- }
-}
-
-#endif /* CONFIG_IRQCHIP_DEMUX_GPIO */
-
-/*
- * This function should be called during kernel startup to initialize
- * the BFin IRQ handling routines.
- */
-int __init init_arch_irq(void)
-{
- int irq;
- unsigned long ilat = 0;
- /* Disable all the peripheral intrs - page 4-29 HW Ref manual */
- bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
- SSYNC();
-
- local_irq_disable();
-
-#ifndef CONFIG_KGDB
- bfin_write_EVT0(evt_emulation);
-#endif
- bfin_write_EVT2(evt_evt2);
- bfin_write_EVT3(trap);
- bfin_write_EVT5(evt_ivhw);
- bfin_write_EVT6(evt_timer);
- bfin_write_EVT7(evt_evt7);
- bfin_write_EVT8(evt_evt8);
- bfin_write_EVT9(evt_evt9);
- bfin_write_EVT10(evt_evt10);
- bfin_write_EVT11(evt_evt11);
- bfin_write_EVT12(evt_evt12);
- bfin_write_EVT13(evt_evt13);
- bfin_write_EVT14(evt14_softirq);
- bfin_write_EVT15(evt_system_call);
- CSYNC();
-
- for (irq = 0; irq < SYS_IRQS; irq++) {
- if (irq <= IRQ_CORETMR)
- set_irq_chip(irq, &bfin_core_irqchip);
- else
- set_irq_chip(irq, &bfin_internal_irqchip);
-#ifdef BF537_GENERIC_ERROR_INT_DEMUX
- if (irq != IRQ_GENERIC_ERROR) {
-#endif
-
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
- if ((irq != IRQ_PROG_INTA) /*PORT F & G MASK_A Interrupt*/
-# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
- && (irq != IRQ_MAC_RX) /*PORT H MASK_A Interrupt*/
-# endif
- ) {
-#endif
- set_irq_handler(irq, handle_simple_irq);
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
- } else {
- set_irq_chained_handler(irq,
- bfin_demux_gpio_irq);
- }
-#endif
-
-#ifdef BF537_GENERIC_ERROR_INT_DEMUX
- } else {
- set_irq_handler(irq, bfin_demux_error_irq);
- }
-#endif
- }
-#ifdef BF537_GENERIC_ERROR_INT_DEMUX
- for (irq = IRQ_PPI_ERROR; irq <= IRQ_UART1_ERROR; irq++) {
- set_irq_chip(irq, &bfin_generic_error_irqchip);
- set_irq_handler(irq, handle_level_irq);
- }
-#endif
-
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
- for (irq = IRQ_PF0; irq < NR_IRQS; irq++) {
- set_irq_chip(irq, &bfin_gpio_irqchip);
- /* if configured as edge, then will be changed to do_edge_IRQ */
- set_irq_handler(irq, handle_level_irq);
- }
-#endif
- bfin_write_IMASK(0);
- CSYNC();
- ilat = bfin_read_ILAT();
- CSYNC();
- bfin_write_ILAT(ilat);
- CSYNC();
-
- printk(KERN_INFO
- "Configuring Blackfin Priority Driven Interrupts\n");
- /* IMASK=xxx is equivalent to STI xx or irq_flags=xx,
- * local_irq_enable()
- */
- program_IAR();
- /* Therefore it's better to setup IARs before interrupts enabled */
- search_IAR();
-
- /* Enable interrupts IVG7-15 */
- irq_flags = irq_flags | IMASK_IVG15 |
- IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
- IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 |
- IMASK_IVGHW;
-
- return 0;
-}
-
-#ifdef CONFIG_DO_IRQ_L1
-void do_irq(int vec, struct pt_regs *fp)__attribute__((l1_text));
-#endif
-
-void do_irq(int vec, struct pt_regs *fp)
-{
- if (vec == EVT_IVTMR_P) {
- vec = IRQ_CORETMR;
- } else {
- struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
- struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
- unsigned long sic_status;
-
- SSYNC();
- sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR();
-
- for (;; ivg++) {
- if (ivg >= ivg_stop) {
- atomic_inc(&num_spurious);
- return;
- } else if (sic_status & ivg->isrflag)
- break;
- }
- vec = ivg->irqno;
- }
- asm_do_IRQ(vec, fp);
-
-#ifdef CONFIG_KGDB
- kgdb_process_breakpoint();
-#endif
-}
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