diff options
author | Adrian Bunk <bunk@kernel.org> | 2007-08-27 23:29:53 +0200 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2007-09-17 15:15:04 +1000 |
commit | e6b6e3ffb9ee8926f9f2f7dc9147df73e27d5828 (patch) | |
tree | ecda5a24187801c1ad46e0d9d90a9fc5f547a52b /arch/ppc/amiga/amiints.c | |
parent | 8237bf080e9ef6adc3f2adce26060722685bbb15 (diff) |
[POWERPC] Remove APUS support from arch/ppc
Current status of APUS:
- arch/powerpc/: removed in 2.6.23
- arch/ppc/: marked BROKEN since 2 years
This therefore removes the remaining parts of APUS support from
arch/ppc, include/asm-ppc, arch/powerpc and include/asm-powerpc.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc/amiga/amiints.c')
-rw-r--r-- | arch/ppc/amiga/amiints.c | 322 |
1 files changed, 0 insertions, 322 deletions
diff --git a/arch/ppc/amiga/amiints.c b/arch/ppc/amiga/amiints.c deleted file mode 100644 index 265fcd3c6ab2..000000000000 --- a/arch/ppc/amiga/amiints.c +++ /dev/null @@ -1,322 +0,0 @@ -/* - * Amiga Linux interrupt handling code - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - * - * 11/07/96: rewritten interrupt handling, irq lists are exists now only for - * this sources where it makes sense (VERTB/PORTS/EXTER) and you must - * be careful that dev_id for this sources is unique since this the - * only possibility to distinguish between different handlers for - * free_irq. irq lists also have different irq flags: - * - IRQ_FLG_FAST: handler is inserted at top of list (after other - * fast handlers) - * - IRQ_FLG_SLOW: handler is inserted at bottom of list and before - * they're executed irq level is set to the previous - * one, but handlers don't need to be reentrant, if - * reentrance occurred, slow handlers will be just - * called again. - * The whole interrupt handling for CIAs is moved to cia.c - * /Roman Zippel - * - * 07/08/99: rewamp of the interrupt handling - we now have two types of - * interrupts, normal and fast handlers, fast handlers being - * marked with SA_INTERRUPT and runs with all other interrupts - * disabled. Normal interrupts disable their own source but - * run with all other interrupt sources enabled. - * PORTS and EXTER interrupts are always shared even if the - * drivers do not explicitly mark this when calling - * request_irq which they really should do. - * This is similar to the way interrupts are handled on all - * other architectures and makes a ton of sense besides - * having the advantage of making it easier to share - * drivers. - * /Jes - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/kernel_stat.h> -#include <linux/init.h> - -#include <asm/system.h> -#include <asm/irq.h> -#include <asm/traps.h> -#include <asm/amigahw.h> -#include <asm/amigaints.h> -#include <asm/amipcmcia.h> - -#ifdef CONFIG_APUS -#include <asm/amigappc.h> -#endif - -extern void cia_init_IRQ(struct ciabase *base); - -unsigned short ami_intena_vals[AMI_STD_IRQS] = { - IF_VERTB, IF_COPER, IF_AUD0, IF_AUD1, IF_AUD2, IF_AUD3, IF_BLIT, - IF_DSKSYN, IF_DSKBLK, IF_RBF, IF_TBE, IF_SOFT, IF_PORTS, IF_EXTER -}; -static const unsigned char ami_servers[AMI_STD_IRQS] = { - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 -}; - -static short ami_ablecount[AMI_IRQS]; - -static void ami_badint(int irq, void *dev_id, struct pt_regs *fp) -{ -/* num_spurious += 1;*/ -} - -/* - * void amiga_init_IRQ(void) - * - * Parameters: None - * - * Returns: Nothing - * - * This function should be called during kernel startup to initialize - * the amiga IRQ handling routines. - */ - -__init -void amiga_init_IRQ(void) -{ - int i; - - for (i = 0; i < AMI_IRQS; i++) - ami_ablecount[i] = 0; - - /* turn off PCMCIA interrupts */ - if (AMIGAHW_PRESENT(PCMCIA)) - gayle.inten = GAYLE_IRQ_IDE; - - /* turn off all interrupts... */ - amiga_custom.intena = 0x7fff; - amiga_custom.intreq = 0x7fff; - -#ifdef CONFIG_APUS - /* Clear any inter-CPU interrupt requests. Circumvents bug in - Blizzard IPL emulation HW (or so it appears). */ - APUS_WRITE(APUS_INT_LVL, INTLVL_SETRESET | INTLVL_MASK); - - /* Init IPL emulation. */ - APUS_WRITE(APUS_REG_INT, REGINT_INTMASTER | REGINT_ENABLEIPL); - APUS_WRITE(APUS_IPL_EMU, IPLEMU_DISABLEINT); - APUS_WRITE(APUS_IPL_EMU, IPLEMU_SETRESET | IPLEMU_IPLMASK); -#endif - /* ... and enable the master interrupt bit */ - amiga_custom.intena = IF_SETCLR | IF_INTEN; - - cia_init_IRQ(&ciaa_base); - cia_init_IRQ(&ciab_base); -} - -/* - * Enable/disable a particular machine specific interrupt source. - * Note that this may affect other interrupts in case of a shared interrupt. - * This function should only be called for a _very_ short time to change some - * internal data, that may not be changed by the interrupt at the same time. - * ami_(enable|disable)_irq calls may also be nested. - */ - -void amiga_enable_irq(unsigned int irq) -{ - if (irq >= AMI_IRQS) { - printk("%s: Unknown IRQ %d\n", __FUNCTION__, irq); - return; - } - - ami_ablecount[irq]--; - if (ami_ablecount[irq]<0) - ami_ablecount[irq]=0; - else if (ami_ablecount[irq]) - return; - - /* No action for auto-vector interrupts */ - if (irq >= IRQ_AMIGA_AUTO){ - printk("%s: Trying to enable auto-vector IRQ %i\n", - __FUNCTION__, irq - IRQ_AMIGA_AUTO); - return; - } - - if (irq >= IRQ_AMIGA_CIAA) { - cia_set_irq(irq, 0); - cia_able_irq(irq, 1); - return; - } - - /* enable the interrupt */ - amiga_custom.intena = IF_SETCLR | ami_intena_vals[irq]; -} - -void amiga_disable_irq(unsigned int irq) -{ - if (irq >= AMI_IRQS) { - printk("%s: Unknown IRQ %d\n", __FUNCTION__, irq); - return; - } - - if (ami_ablecount[irq]++) - return; - - /* No action for auto-vector interrupts */ - if (irq >= IRQ_AMIGA_AUTO) { - printk("%s: Trying to disable auto-vector IRQ %i\n", - __FUNCTION__, irq - IRQ_AMIGA_AUTO); - return; - } - - if (irq >= IRQ_AMIGA_CIAA) { - cia_able_irq(irq, 0); - return; - } - - /* disable the interrupt */ - amiga_custom.intena = ami_intena_vals[irq]; -} - -inline void amiga_do_irq(int irq, struct pt_regs *fp) -{ - irq_desc_t *desc = irq_desc + irq; - struct irqaction *action = desc->action; - - kstat_cpu(0).irqs[irq]++; - action->handler(irq, action->dev_id, fp); -} - -void amiga_do_irq_list(int irq, struct pt_regs *fp) -{ - irq_desc_t *desc = irq_desc + irq; - struct irqaction *action; - - kstat_cpu(0).irqs[irq]++; - - amiga_custom.intreq = ami_intena_vals[irq]; - - for (action = desc->action; action; action = action->next) - action->handler(irq, action->dev_id, fp); -} - -/* - * The builtin Amiga hardware interrupt handlers. - */ - -static void ami_int1(int irq, void *dev_id, struct pt_regs *fp) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if serial transmit buffer empty, interrupt */ - if (ints & IF_TBE) { - amiga_custom.intreq = IF_TBE; - amiga_do_irq(IRQ_AMIGA_TBE, fp); - } - - /* if floppy disk transfer complete, interrupt */ - if (ints & IF_DSKBLK) { - amiga_custom.intreq = IF_DSKBLK; - amiga_do_irq(IRQ_AMIGA_DSKBLK, fp); - } - - /* if software interrupt set, interrupt */ - if (ints & IF_SOFT) { - amiga_custom.intreq = IF_SOFT; - amiga_do_irq(IRQ_AMIGA_SOFT, fp); - } -} - -static void ami_int3(int irq, void *dev_id, struct pt_regs *fp) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if a blitter interrupt */ - if (ints & IF_BLIT) { - amiga_custom.intreq = IF_BLIT; - amiga_do_irq(IRQ_AMIGA_BLIT, fp); - } - - /* if a copper interrupt */ - if (ints & IF_COPER) { - amiga_custom.intreq = IF_COPER; - amiga_do_irq(IRQ_AMIGA_COPPER, fp); - } - - /* if a vertical blank interrupt */ - if (ints & IF_VERTB) - amiga_do_irq_list(IRQ_AMIGA_VERTB, fp); -} - -static void ami_int4(int irq, void *dev_id, struct pt_regs *fp) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if audio 0 interrupt */ - if (ints & IF_AUD0) { - amiga_custom.intreq = IF_AUD0; - amiga_do_irq(IRQ_AMIGA_AUD0, fp); - } - - /* if audio 1 interrupt */ - if (ints & IF_AUD1) { - amiga_custom.intreq = IF_AUD1; - amiga_do_irq(IRQ_AMIGA_AUD1, fp); - } - - /* if audio 2 interrupt */ - if (ints & IF_AUD2) { - amiga_custom.intreq = IF_AUD2; - amiga_do_irq(IRQ_AMIGA_AUD2, fp); - } - - /* if audio 3 interrupt */ - if (ints & IF_AUD3) { - amiga_custom.intreq = IF_AUD3; - amiga_do_irq(IRQ_AMIGA_AUD3, fp); - } -} - -static void ami_int5(int irq, void *dev_id, struct pt_regs *fp) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if serial receive buffer full interrupt */ - if (ints & IF_RBF) { - /* acknowledge of IF_RBF must be done by the serial interrupt */ - amiga_do_irq(IRQ_AMIGA_RBF, fp); - } - - /* if a disk sync interrupt */ - if (ints & IF_DSKSYN) { - amiga_custom.intreq = IF_DSKSYN; - amiga_do_irq(IRQ_AMIGA_DSKSYN, fp); - } -} - -static void ami_int7(int irq, void *dev_id, struct pt_regs *fp) -{ - panic ("level 7 interrupt received\n"); -} - -#ifdef CONFIG_APUS -/* The PPC irq handling links all handlers requested on the same vector - and executes them in a loop. Having ami_badint at the end of the chain - is a bad idea. */ -struct irqaction amiga_sys_irqaction[AUTO_IRQS] = { - { .handler = ami_badint, .name = "spurious int" }, - { .handler = ami_int1, .name = "int1 handler" }, - { 0, /* CIAA */ }, - { .handler = ami_int3, .name = "int3 handler" }, - { .handler = ami_int4, .name = "int4 handler" }, - { .handler = ami_int5, .name = "int5 handler" }, - { 0, /* CIAB */ }, - { .handler = ami_int7, .name = "int7 handler" }, -}; -#else -void (*amiga_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = { - ami_badint, ami_int1, ami_badint, ami_int3, - ami_int4, ami_int5, ami_badint, ami_int7 -}; -#endif |