summaryrefslogtreecommitdiffstats
path: root/arch/m68k/amiga
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m68k/amiga')
-rw-r--r--arch/m68k/amiga/Makefile8
-rw-r--r--arch/m68k/amiga/amiints.c174
-rw-r--r--arch/m68k/amiga/amisound.c116
-rw-r--r--arch/m68k/amiga/chipram.c124
-rw-r--r--arch/m68k/amiga/cia.c195
-rw-r--r--arch/m68k/amiga/config.c851
-rw-r--r--arch/m68k/amiga/pcmcia.c122
-rw-r--r--arch/m68k/amiga/platform.c255
8 files changed, 1845 insertions, 0 deletions
diff --git a/arch/m68k/amiga/Makefile b/arch/m68k/amiga/Makefile
new file mode 100644
index 0000000000..d17934237c
--- /dev/null
+++ b/arch/m68k/amiga/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for Linux arch/m68k/amiga source directory
+#
+
+obj-y := config.o amiints.o cia.o chipram.o amisound.o platform.o
+
+obj-$(CONFIG_AMIGA_PCMCIA) += pcmcia.o
diff --git a/arch/m68k/amiga/amiints.c b/arch/m68k/amiga/amiints.c
new file mode 100644
index 0000000000..7ff739e948
--- /dev/null
+++ b/arch/m68k/amiga/amiints.c
@@ -0,0 +1,174 @@
+/*
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/irq.h>
+
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/amigahw.h>
+#include <asm/amigaints.h>
+#include <asm/amipcmcia.h>
+
+
+/*
+ * 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.
+ */
+
+static void amiga_irq_enable(struct irq_data *data)
+{
+ amiga_custom.intena = IF_SETCLR | (1 << (data->irq - IRQ_USER));
+}
+
+static void amiga_irq_disable(struct irq_data *data)
+{
+ amiga_custom.intena = 1 << (data->irq - IRQ_USER);
+}
+
+static struct irq_chip amiga_irq_chip = {
+ .name = "amiga",
+ .irq_enable = amiga_irq_enable,
+ .irq_disable = amiga_irq_disable,
+};
+
+
+/*
+ * The builtin Amiga hardware interrupt handlers.
+ */
+
+static void ami_int1(struct irq_desc *desc)
+{
+ unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
+
+ /* if serial transmit buffer empty, interrupt */
+ if (ints & IF_TBE) {
+ amiga_custom.intreq = IF_TBE;
+ generic_handle_irq(IRQ_AMIGA_TBE);
+ }
+
+ /* if floppy disk transfer complete, interrupt */
+ if (ints & IF_DSKBLK) {
+ amiga_custom.intreq = IF_DSKBLK;
+ generic_handle_irq(IRQ_AMIGA_DSKBLK);
+ }
+
+ /* if software interrupt set, interrupt */
+ if (ints & IF_SOFT) {
+ amiga_custom.intreq = IF_SOFT;
+ generic_handle_irq(IRQ_AMIGA_SOFT);
+ }
+}
+
+static void ami_int3(struct irq_desc *desc)
+{
+ unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
+
+ /* if a blitter interrupt */
+ if (ints & IF_BLIT) {
+ amiga_custom.intreq = IF_BLIT;
+ generic_handle_irq(IRQ_AMIGA_BLIT);
+ }
+
+ /* if a copper interrupt */
+ if (ints & IF_COPER) {
+ amiga_custom.intreq = IF_COPER;
+ generic_handle_irq(IRQ_AMIGA_COPPER);
+ }
+
+ /* if a vertical blank interrupt */
+ if (ints & IF_VERTB) {
+ amiga_custom.intreq = IF_VERTB;
+ generic_handle_irq(IRQ_AMIGA_VERTB);
+ }
+}
+
+static void ami_int4(struct irq_desc *desc)
+{
+ unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
+
+ /* if audio 0 interrupt */
+ if (ints & IF_AUD0) {
+ amiga_custom.intreq = IF_AUD0;
+ generic_handle_irq(IRQ_AMIGA_AUD0);
+ }
+
+ /* if audio 1 interrupt */
+ if (ints & IF_AUD1) {
+ amiga_custom.intreq = IF_AUD1;
+ generic_handle_irq(IRQ_AMIGA_AUD1);
+ }
+
+ /* if audio 2 interrupt */
+ if (ints & IF_AUD2) {
+ amiga_custom.intreq = IF_AUD2;
+ generic_handle_irq(IRQ_AMIGA_AUD2);
+ }
+
+ /* if audio 3 interrupt */
+ if (ints & IF_AUD3) {
+ amiga_custom.intreq = IF_AUD3;
+ generic_handle_irq(IRQ_AMIGA_AUD3);
+ }
+}
+
+static void ami_int5(struct irq_desc *desc)
+{
+ 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 */
+ generic_handle_irq(IRQ_AMIGA_RBF);
+ }
+
+ /* if a disk sync interrupt */
+ if (ints & IF_DSKSYN) {
+ amiga_custom.intreq = IF_DSKSYN;
+ generic_handle_irq(IRQ_AMIGA_DSKSYN);
+ }
+}
+
+
+/*
+ * void amiga_init_IRQ(void)
+ *
+ * Parameters: None
+ *
+ * Returns: Nothing
+ *
+ * This function should be called during kernel startup to initialize
+ * the amiga IRQ handling routines.
+ */
+
+void __init amiga_init_IRQ(void)
+{
+ m68k_setup_irq_controller(&amiga_irq_chip, handle_simple_irq, IRQ_USER,
+ AMI_STD_IRQS);
+
+ irq_set_chained_handler(IRQ_AUTO_1, ami_int1);
+ irq_set_chained_handler(IRQ_AUTO_3, ami_int3);
+ irq_set_chained_handler(IRQ_AUTO_4, ami_int4);
+ irq_set_chained_handler(IRQ_AUTO_5, ami_int5);
+
+ /* turn off PCMCIA interrupts */
+ if (AMIGAHW_PRESENT(PCMCIA))
+ gayle.inten = GAYLE_IRQ_IDE;
+
+ /* turn off all interrupts and enable the master interrupt bit */
+ amiga_custom.intena = 0x7fff;
+ amiga_custom.intreq = 0x7fff;
+ amiga_custom.intena = IF_SETCLR | IF_INTEN;
+
+ cia_init_IRQ(&ciaa_base);
+ cia_init_IRQ(&ciab_base);
+}
diff --git a/arch/m68k/amiga/amisound.c b/arch/m68k/amiga/amisound.c
new file mode 100644
index 0000000000..442bdeee6b
--- /dev/null
+++ b/arch/m68k/amiga/amisound.c
@@ -0,0 +1,116 @@
+/*
+ * linux/arch/m68k/amiga/amisound.c
+ *
+ * amiga sound driver for Linux/m68k
+ *
+ * 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.
+ */
+
+#include <linux/jiffies.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/module.h>
+
+#include <asm/amigahw.h>
+
+static unsigned short *snd_data;
+static const signed char sine_data[] = {
+ 0, 39, 75, 103, 121, 127, 121, 103, 75, 39,
+ 0, -39, -75, -103, -121, -127, -121, -103, -75, -39
+};
+#define DATA_SIZE ARRAY_SIZE(sine_data)
+
+#define custom amiga_custom
+
+ /*
+ * The minimum period for audio may be modified by the frame buffer
+ * device since it depends on htotal (for OCS/ECS/AGA)
+ */
+
+volatile unsigned short amiga_audio_min_period = 124; /* Default for pre-OCS */
+EXPORT_SYMBOL(amiga_audio_min_period);
+
+#define MAX_PERIOD (65535)
+
+
+ /*
+ * Current period (set by dmasound.c)
+ */
+
+unsigned short amiga_audio_period = MAX_PERIOD;
+EXPORT_SYMBOL(amiga_audio_period);
+
+static unsigned long clock_constant;
+
+void __init amiga_init_sound(void)
+{
+ static struct resource beep_res = { .name = "Beep" };
+
+ snd_data = amiga_chip_alloc_res(sizeof(sine_data), &beep_res);
+ if (!snd_data) {
+ pr_crit("amiga init_sound: failed to allocate chipmem\n");
+ return;
+ }
+ memcpy (snd_data, sine_data, sizeof(sine_data));
+
+ /* setup divisor */
+ clock_constant = (amiga_colorclock+DATA_SIZE/2)/DATA_SIZE;
+
+ /* without amifb, turn video off and enable high quality sound */
+#ifndef CONFIG_FB_AMIGA
+ amifb_video_off();
+#endif
+}
+
+static void nosound(struct timer_list *unused);
+static DEFINE_TIMER(sound_timer, nosound);
+
+void amiga_mksound( unsigned int hz, unsigned int ticks )
+{
+ unsigned long flags;
+
+ if (!snd_data)
+ return;
+
+ local_irq_save(flags);
+ del_timer( &sound_timer );
+
+ if (hz > 20 && hz < 32767) {
+ unsigned long period = (clock_constant / hz);
+
+ if (period < amiga_audio_min_period)
+ period = amiga_audio_min_period;
+ if (period > MAX_PERIOD)
+ period = MAX_PERIOD;
+
+ /* setup pointer to data, period, length and volume */
+ custom.aud[2].audlc = snd_data;
+ custom.aud[2].audlen = sizeof(sine_data)/2;
+ custom.aud[2].audper = (unsigned short)period;
+ custom.aud[2].audvol = 32; /* 50% of maxvol */
+
+ if (ticks) {
+ sound_timer.expires = jiffies + ticks;
+ add_timer( &sound_timer );
+ }
+
+ /* turn on DMA for audio channel 2 */
+ custom.dmacon = DMAF_SETCLR | DMAF_AUD2;
+
+ } else
+ nosound( 0 );
+
+ local_irq_restore(flags);
+}
+
+
+static void nosound(struct timer_list *unused)
+{
+ /* turn off DMA for audio channel 2 */
+ custom.dmacon = DMAF_AUD2;
+ /* restore period to previous value after beeping */
+ custom.aud[2].audper = amiga_audio_period;
+}
diff --git a/arch/m68k/amiga/chipram.c b/arch/m68k/amiga/chipram.c
new file mode 100644
index 0000000000..a537953bc1
--- /dev/null
+++ b/arch/m68k/amiga/chipram.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+** linux/amiga/chipram.c
+**
+** Modified 03-May-94 by Geert Uytterhoeven <geert@linux-m68k.org>
+** - 64-bit aligned allocations for full AGA compatibility
+**
+** Rewritten 15/9/2000 by Geert to use resource management
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/module.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/amigahw.h>
+
+unsigned long amiga_chip_size;
+EXPORT_SYMBOL(amiga_chip_size);
+
+static struct resource chipram_res = {
+ .name = "Chip RAM", .start = CHIP_PHYSADDR
+};
+static atomic_t chipavail;
+
+
+void __init amiga_chip_init(void)
+{
+ if (!AMIGAHW_PRESENT(CHIP_RAM))
+ return;
+
+ chipram_res.end = CHIP_PHYSADDR + amiga_chip_size - 1;
+ request_resource(&iomem_resource, &chipram_res);
+
+ atomic_set(&chipavail, amiga_chip_size);
+}
+
+
+void *amiga_chip_alloc(unsigned long size, const char *name)
+{
+ struct resource *res;
+ void *p;
+
+ res = kzalloc(sizeof(struct resource), GFP_KERNEL);
+ if (!res)
+ return NULL;
+
+ res->name = name;
+ p = amiga_chip_alloc_res(size, res);
+ if (!p) {
+ kfree(res);
+ return NULL;
+ }
+
+ return p;
+}
+EXPORT_SYMBOL(amiga_chip_alloc);
+
+
+ /*
+ * Warning:
+ * amiga_chip_alloc_res is meant only for drivers that need to
+ * allocate Chip RAM before kmalloc() is functional. As a consequence,
+ * those drivers must not free that Chip RAM afterwards.
+ */
+
+void *amiga_chip_alloc_res(unsigned long size, struct resource *res)
+{
+ int error;
+
+ /* round up */
+ size = PAGE_ALIGN(size);
+
+ pr_debug("amiga_chip_alloc_res: allocate %lu bytes\n", size);
+ error = allocate_resource(&chipram_res, res, size, 0, UINT_MAX,
+ PAGE_SIZE, NULL, NULL);
+ if (error < 0) {
+ pr_err("amiga_chip_alloc_res: allocate_resource() failed %d!\n",
+ error);
+ return NULL;
+ }
+
+ atomic_sub(size, &chipavail);
+ pr_debug("amiga_chip_alloc_res: returning %pR\n", res);
+ return ZTWO_VADDR(res->start);
+}
+
+void amiga_chip_free(void *ptr)
+{
+ unsigned long start = ZTWO_PADDR(ptr);
+ struct resource *res;
+ unsigned long size;
+
+ res = lookup_resource(&chipram_res, start);
+ if (!res) {
+ pr_err("amiga_chip_free: trying to free nonexistent region at "
+ "%p\n", ptr);
+ return;
+ }
+
+ size = resource_size(res);
+ pr_debug("amiga_chip_free: free %lu bytes at %p\n", size, ptr);
+ atomic_add(size, &chipavail);
+ release_resource(res);
+ kfree(res);
+}
+EXPORT_SYMBOL(amiga_chip_free);
+
+
+unsigned long amiga_chip_avail(void)
+{
+ unsigned long n = atomic_read(&chipavail);
+
+ pr_debug("amiga_chip_avail : %lu bytes\n", n);
+ return n;
+}
+EXPORT_SYMBOL(amiga_chip_avail);
+
diff --git a/arch/m68k/amiga/cia.c b/arch/m68k/amiga/cia.c
new file mode 100644
index 0000000000..b9aee983e6
--- /dev/null
+++ b/arch/m68k/amiga/cia.c
@@ -0,0 +1,195 @@
+/*
+ * linux/arch/m68k/amiga/cia.c - CIA support
+ *
+ * Copyright (C) 1996 Roman Zippel
+ *
+ * The concept of some functions bases on the original Amiga OS function
+ *
+ * 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.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/kernel_stat.h>
+#include <linux/init.h>
+#include <linux/seq_file.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <asm/irq.h>
+#include <asm/amigahw.h>
+#include <asm/amigaints.h>
+
+struct ciabase {
+ volatile struct CIA *cia;
+ unsigned char icr_mask, icr_data;
+ unsigned short int_mask;
+ int handler_irq, cia_irq, server_irq;
+ char *name;
+} ciaa_base = {
+ .cia = &ciaa,
+ .int_mask = IF_PORTS,
+ .handler_irq = IRQ_AMIGA_PORTS,
+ .cia_irq = IRQ_AMIGA_CIAA,
+ .name = "CIAA"
+}, ciab_base = {
+ .cia = &ciab,
+ .int_mask = IF_EXTER,
+ .handler_irq = IRQ_AMIGA_EXTER,
+ .cia_irq = IRQ_AMIGA_CIAB,
+ .name = "CIAB"
+};
+
+/*
+ * Cause or clear CIA interrupts, return old interrupt status.
+ */
+
+unsigned char cia_set_irq(struct ciabase *base, unsigned char mask)
+{
+ unsigned char old;
+
+ old = (base->icr_data |= base->cia->icr);
+ if (mask & CIA_ICR_SETCLR)
+ base->icr_data |= mask;
+ else
+ base->icr_data &= ~mask;
+ if (base->icr_data & base->icr_mask)
+ amiga_custom.intreq = IF_SETCLR | base->int_mask;
+ return old & base->icr_mask;
+}
+
+/*
+ * Enable or disable CIA interrupts, return old interrupt mask,
+ */
+
+unsigned char cia_able_irq(struct ciabase *base, unsigned char mask)
+{
+ unsigned char old;
+
+ old = base->icr_mask;
+ base->icr_data |= base->cia->icr;
+ base->cia->icr = mask;
+ if (mask & CIA_ICR_SETCLR)
+ base->icr_mask |= mask;
+ else
+ base->icr_mask &= ~mask;
+ base->icr_mask &= CIA_ICR_ALL;
+ if (base->icr_data & base->icr_mask)
+ amiga_custom.intreq = IF_SETCLR | base->int_mask;
+ return old;
+}
+
+static irqreturn_t cia_handler(int irq, void *dev_id)
+{
+ struct ciabase *base = dev_id;
+ int mach_irq;
+ unsigned char ints;
+ unsigned long flags;
+
+ /* Interrupts get disabled while the timer irq flag is cleared and
+ * the timer interrupt serviced.
+ */
+ mach_irq = base->cia_irq;
+ local_irq_save(flags);
+ ints = cia_set_irq(base, CIA_ICR_ALL);
+ amiga_custom.intreq = base->int_mask;
+ if (ints & 1)
+ generic_handle_irq(mach_irq);
+ local_irq_restore(flags);
+ mach_irq++, ints >>= 1;
+ for (; ints; mach_irq++, ints >>= 1) {
+ if (ints & 1)
+ generic_handle_irq(mach_irq);
+ }
+ return IRQ_HANDLED;
+}
+
+static void cia_irq_enable(struct irq_data *data)
+{
+ unsigned int irq = data->irq;
+ unsigned char mask;
+
+ if (irq >= IRQ_AMIGA_CIAB) {
+ mask = 1 << (irq - IRQ_AMIGA_CIAB);
+ cia_set_irq(&ciab_base, mask);
+ cia_able_irq(&ciab_base, CIA_ICR_SETCLR | mask);
+ } else {
+ mask = 1 << (irq - IRQ_AMIGA_CIAA);
+ cia_set_irq(&ciaa_base, mask);
+ cia_able_irq(&ciaa_base, CIA_ICR_SETCLR | mask);
+ }
+}
+
+static void cia_irq_disable(struct irq_data *data)
+{
+ unsigned int irq = data->irq;
+
+ if (irq >= IRQ_AMIGA_CIAB)
+ cia_able_irq(&ciab_base, 1 << (irq - IRQ_AMIGA_CIAB));
+ else
+ cia_able_irq(&ciaa_base, 1 << (irq - IRQ_AMIGA_CIAA));
+}
+
+static struct irq_chip cia_irq_chip = {
+ .name = "cia",
+ .irq_enable = cia_irq_enable,
+ .irq_disable = cia_irq_disable,
+};
+
+/*
+ * Override auto irq 2 & 6 and use them as general chain
+ * for external interrupts, we link the CIA interrupt sources
+ * into this chain.
+ */
+
+static void auto_irq_enable(struct irq_data *data)
+{
+ switch (data->irq) {
+ case IRQ_AUTO_2:
+ amiga_custom.intena = IF_SETCLR | IF_PORTS;
+ break;
+ case IRQ_AUTO_6:
+ amiga_custom.intena = IF_SETCLR | IF_EXTER;
+ break;
+ }
+}
+
+static void auto_irq_disable(struct irq_data *data)
+{
+ switch (data->irq) {
+ case IRQ_AUTO_2:
+ amiga_custom.intena = IF_PORTS;
+ break;
+ case IRQ_AUTO_6:
+ amiga_custom.intena = IF_EXTER;
+ break;
+ }
+}
+
+static struct irq_chip auto_irq_chip = {
+ .name = "auto",
+ .irq_enable = auto_irq_enable,
+ .irq_disable = auto_irq_disable,
+};
+
+void __init cia_init_IRQ(struct ciabase *base)
+{
+ m68k_setup_irq_controller(&cia_irq_chip, handle_simple_irq,
+ base->cia_irq, CIA_IRQS);
+
+ /* clear any pending interrupt and turn off all interrupts */
+ cia_set_irq(base, CIA_ICR_ALL);
+ cia_able_irq(base, CIA_ICR_ALL);
+
+ /* override auto int and install CIA handler */
+ m68k_setup_irq_controller(&auto_irq_chip, handle_simple_irq,
+ base->handler_irq, 1);
+ m68k_irq_startup_irq(base->handler_irq);
+ if (request_irq(base->handler_irq, cia_handler, IRQF_SHARED,
+ base->name, base))
+ pr_err("Couldn't register %s interrupt\n", base->name);
+}
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
new file mode 100644
index 0000000000..3137b45750
--- /dev/null
+++ b/arch/m68k/amiga/config.c
@@ -0,0 +1,851 @@
+/*
+ * linux/arch/m68k/amiga/config.c
+ *
+ * Copyright (C) 1993 Hamish Macdonald
+ *
+ * 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.
+ */
+
+/*
+ * Miscellaneous Amiga stuff
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/seq_file.h>
+#include <linux/tty.h>
+#include <linux/clocksource.h>
+#include <linux/console.h>
+#include <linux/rtc.h>
+#include <linux/init.h>
+#include <linux/vt_kern.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/zorro.h>
+#include <linux/module.h>
+#include <linux/keyboard.h>
+
+#include <asm/bootinfo.h>
+#include <asm/bootinfo-amiga.h>
+#include <asm/byteorder.h>
+#include <asm/setup.h>
+#include <asm/amigahw.h>
+#include <asm/amigaints.h>
+#include <asm/irq.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/config.h>
+
+static unsigned long amiga_model;
+
+unsigned long amiga_eclock;
+EXPORT_SYMBOL(amiga_eclock);
+
+unsigned long amiga_colorclock;
+EXPORT_SYMBOL(amiga_colorclock);
+
+unsigned long amiga_chipset;
+EXPORT_SYMBOL(amiga_chipset);
+
+unsigned char amiga_vblank;
+EXPORT_SYMBOL(amiga_vblank);
+
+static unsigned char amiga_psfreq;
+
+struct amiga_hw_present amiga_hw_present;
+EXPORT_SYMBOL(amiga_hw_present);
+
+static char s_a500[] __initdata = "A500";
+static char s_a500p[] __initdata = "A500+";
+static char s_a600[] __initdata = "A600";
+static char s_a1000[] __initdata = "A1000";
+static char s_a1200[] __initdata = "A1200";
+static char s_a2000[] __initdata = "A2000";
+static char s_a2500[] __initdata = "A2500";
+static char s_a3000[] __initdata = "A3000";
+static char s_a3000t[] __initdata = "A3000T";
+static char s_a3000p[] __initdata = "A3000+";
+static char s_a4000[] __initdata = "A4000";
+static char s_a4000t[] __initdata = "A4000T";
+static char s_cdtv[] __initdata = "CDTV";
+static char s_cd32[] __initdata = "CD32";
+static char s_draco[] __initdata = "Draco";
+static char *amiga_models[] __initdata = {
+ [AMI_500-AMI_500] = s_a500,
+ [AMI_500PLUS-AMI_500] = s_a500p,
+ [AMI_600-AMI_500] = s_a600,
+ [AMI_1000-AMI_500] = s_a1000,
+ [AMI_1200-AMI_500] = s_a1200,
+ [AMI_2000-AMI_500] = s_a2000,
+ [AMI_2500-AMI_500] = s_a2500,
+ [AMI_3000-AMI_500] = s_a3000,
+ [AMI_3000T-AMI_500] = s_a3000t,
+ [AMI_3000PLUS-AMI_500] = s_a3000p,
+ [AMI_4000-AMI_500] = s_a4000,
+ [AMI_4000T-AMI_500] = s_a4000t,
+ [AMI_CDTV-AMI_500] = s_cdtv,
+ [AMI_CD32-AMI_500] = s_cd32,
+ [AMI_DRACO-AMI_500] = s_draco,
+};
+
+static char amiga_model_name[13] = "Amiga ";
+
+static void amiga_sched_init(void);
+static void amiga_get_model(char *model);
+static void amiga_get_hardware_list(struct seq_file *m);
+extern void amiga_mksound(unsigned int count, unsigned int ticks);
+static void amiga_reset(void);
+extern void amiga_init_sound(void);
+static void amiga_mem_console_write(struct console *co, const char *b,
+ unsigned int count);
+#ifdef CONFIG_HEARTBEAT
+static void amiga_heartbeat(int on);
+#endif
+
+static struct console amiga_console_driver = {
+ .name = "debug",
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+
+ /*
+ * Motherboard Resources present in all Amiga models
+ */
+
+static struct {
+ struct resource _ciab, _ciaa, _custom, _kickstart;
+} mb_resources = {
+ ._ciab = {
+ .name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
+ },
+ ._ciaa = {
+ .name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
+ },
+ ._custom = {
+ .name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
+ },
+ ._kickstart = {
+ .name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
+ }
+};
+
+static struct resource ram_resource[NUM_MEMINFO];
+
+
+ /*
+ * Parse an Amiga-specific record in the bootinfo
+ */
+
+int __init amiga_parse_bootinfo(const struct bi_record *record)
+{
+ int unknown = 0;
+ const void *data = record->data;
+
+ switch (be16_to_cpu(record->tag)) {
+ case BI_AMIGA_MODEL:
+ amiga_model = be32_to_cpup(data);
+ break;
+
+ case BI_AMIGA_ECLOCK:
+ amiga_eclock = be32_to_cpup(data);
+ break;
+
+ case BI_AMIGA_CHIPSET:
+ amiga_chipset = be32_to_cpup(data);
+ break;
+
+ case BI_AMIGA_CHIP_SIZE:
+ amiga_chip_size = be32_to_cpup(data);
+ break;
+
+ case BI_AMIGA_VBLANK:
+ amiga_vblank = *(const __u8 *)data;
+ break;
+
+ case BI_AMIGA_PSFREQ:
+ amiga_psfreq = *(const __u8 *)data;
+ break;
+
+ case BI_AMIGA_AUTOCON:
+#ifdef CONFIG_ZORRO
+ if (zorro_num_autocon < ZORRO_NUM_AUTO) {
+ const struct ConfigDev *cd = data;
+ struct zorro_dev_init *dev = &zorro_autocon_init[zorro_num_autocon++];
+ dev->rom = cd->cd_Rom;
+ dev->slotaddr = be16_to_cpu(cd->cd_SlotAddr);
+ dev->slotsize = be16_to_cpu(cd->cd_SlotSize);
+ dev->boardaddr = be32_to_cpu(cd->cd_BoardAddr);
+ dev->boardsize = be32_to_cpu(cd->cd_BoardSize);
+ } else
+ pr_warn("amiga_parse_bootinfo: too many AutoConfig devices\n");
+#endif /* CONFIG_ZORRO */
+ break;
+
+ case BI_AMIGA_SERPER:
+ /* serial port period: ignored here */
+ break;
+
+ default:
+ unknown = 1;
+ }
+ return unknown;
+}
+
+ /*
+ * Identify builtin hardware
+ */
+
+static void __init amiga_identify(void)
+{
+ /* Fill in some default values, if necessary */
+ if (amiga_eclock == 0)
+ amiga_eclock = 709379;
+
+ memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
+
+ pr_info("Amiga hardware found: ");
+ if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
+ pr_cont("[%s] ", amiga_models[amiga_model-AMI_500]);
+ strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
+ }
+
+ switch (amiga_model) {
+ case AMI_UNKNOWN:
+ break;
+
+ case AMI_600:
+ case AMI_1200:
+ AMIGAHW_SET(A1200_IDE);
+ AMIGAHW_SET(PCMCIA);
+ fallthrough;
+ case AMI_500:
+ case AMI_500PLUS:
+ case AMI_1000:
+ case AMI_2000:
+ case AMI_2500:
+ AMIGAHW_SET(A2000_CLK); /* Is this correct for all models? */
+ break;
+
+ case AMI_3000:
+ case AMI_3000T:
+ AMIGAHW_SET(AMBER_FF);
+ AMIGAHW_SET(MAGIC_REKICK);
+ fallthrough;
+ case AMI_3000PLUS:
+ AMIGAHW_SET(A3000_SCSI);
+ AMIGAHW_SET(A3000_CLK);
+ AMIGAHW_SET(ZORRO3);
+ break;
+
+ case AMI_4000T:
+ AMIGAHW_SET(A4000_SCSI);
+ fallthrough;
+ case AMI_4000:
+ AMIGAHW_SET(A4000_IDE);
+ AMIGAHW_SET(A3000_CLK);
+ AMIGAHW_SET(ZORRO3);
+ break;
+
+ case AMI_CDTV:
+ case AMI_CD32:
+ AMIGAHW_SET(CD_ROM);
+ AMIGAHW_SET(A2000_CLK); /* Is this correct? */
+ break;
+
+ case AMI_DRACO:
+ panic("No support for Draco yet");
+
+ default:
+ panic("Unknown Amiga Model");
+ }
+
+ AMIGAHW_SET(AMI_VIDEO);
+ AMIGAHW_SET(AMI_BLITTER);
+ AMIGAHW_SET(AMI_AUDIO);
+ AMIGAHW_SET(AMI_FLOPPY);
+ AMIGAHW_SET(AMI_KEYBOARD);
+ AMIGAHW_SET(AMI_MOUSE);
+ AMIGAHW_SET(AMI_SERIAL);
+ AMIGAHW_SET(AMI_PARALLEL);
+ AMIGAHW_SET(CHIP_RAM);
+ AMIGAHW_SET(PAULA);
+
+ switch (amiga_chipset) {
+ case CS_OCS:
+ case CS_ECS:
+ case CS_AGA:
+ switch (amiga_custom.deniseid & 0xf) {
+ case 0x0c:
+ AMIGAHW_SET(DENISE_HR);
+ break;
+ case 0x08:
+ AMIGAHW_SET(LISA);
+ break;
+ default:
+ AMIGAHW_SET(DENISE);
+ break;
+ }
+ break;
+ }
+ switch ((amiga_custom.vposr>>8) & 0x7f) {
+ case 0x00:
+ AMIGAHW_SET(AGNUS_PAL);
+ break;
+ case 0x10:
+ AMIGAHW_SET(AGNUS_NTSC);
+ break;
+ case 0x20:
+ case 0x21:
+ AMIGAHW_SET(AGNUS_HR_PAL);
+ break;
+ case 0x30:
+ case 0x31:
+ AMIGAHW_SET(AGNUS_HR_NTSC);
+ break;
+ case 0x22:
+ case 0x23:
+ AMIGAHW_SET(ALICE_PAL);
+ break;
+ case 0x32:
+ case 0x33:
+ AMIGAHW_SET(ALICE_NTSC);
+ break;
+ }
+ AMIGAHW_SET(ZORRO);
+
+#define AMIGAHW_ANNOUNCE(name, str) \
+ if (AMIGAHW_PRESENT(name)) \
+ pr_cont(str)
+
+ AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
+ AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
+ AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
+ AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
+ AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
+ AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
+ AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
+ AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
+ AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
+ AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
+ AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
+ AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
+ AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
+ AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
+ AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
+ AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
+ AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
+ AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
+ AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
+ AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
+ AMIGAHW_ANNOUNCE(LISA, "LISA ");
+ AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
+ AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
+ AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
+ AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
+ AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
+ AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
+ AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
+ AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
+ if (AMIGAHW_PRESENT(ZORRO))
+ pr_cont("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
+ pr_cont("\n");
+
+#undef AMIGAHW_ANNOUNCE
+}
+
+
+static unsigned long amiga_random_get_entropy(void)
+{
+ /* VPOSR/VHPOSR provide at least 17 bits of data changing at 1.79 MHz */
+ return *(unsigned long *)&amiga_custom.vposr;
+}
+
+
+ /*
+ * Setup the Amiga configuration info
+ */
+
+void __init config_amiga(void)
+{
+ int i;
+
+ amiga_identify();
+
+ /* Yuk, we don't have PCI memory */
+ iomem_resource.name = "Memory";
+ for (i = 0; i < 4; i++)
+ request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
+
+ mach_sched_init = amiga_sched_init;
+ mach_init_IRQ = amiga_init_IRQ;
+ mach_get_model = amiga_get_model;
+ mach_get_hardware_list = amiga_get_hardware_list;
+ mach_reset = amiga_reset;
+#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
+ mach_beep = amiga_mksound;
+#endif
+
+#ifdef CONFIG_HEARTBEAT
+ mach_heartbeat = amiga_heartbeat;
+#endif
+
+ mach_random_get_entropy = amiga_random_get_entropy;
+
+ /* Fill in the clock value (based on the 700 kHz E-Clock) */
+ amiga_colorclock = 5*amiga_eclock; /* 3.5 MHz */
+
+ /* clear all DMA bits */
+ amiga_custom.dmacon = DMAF_ALL;
+ /* ensure that the DMA master bit is set */
+ amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
+
+ /* don't use Z2 RAM as system memory on Z3 capable machines */
+ if (AMIGAHW_PRESENT(ZORRO3)) {
+ int i, j;
+ u32 disabled_z2mem = 0;
+
+ for (i = 0; i < m68k_num_memory; i++) {
+ if (m68k_memory[i].addr < 16*1024*1024) {
+ if (i == 0) {
+ /* don't cut off the branch we're sitting on */
+ pr_warn("Warning: kernel runs in Zorro II memory\n");
+ continue;
+ }
+ disabled_z2mem += m68k_memory[i].size;
+ m68k_num_memory--;
+ for (j = i; j < m68k_num_memory; j++)
+ m68k_memory[j] = m68k_memory[j+1];
+ i--;
+ }
+ }
+ if (disabled_z2mem)
+ pr_info("%dK of Zorro II memory will not be used as system memory\n",
+ disabled_z2mem>>10);
+ }
+
+ /* request all RAM */
+ for (i = 0; i < m68k_num_memory; i++) {
+ ram_resource[i].name =
+ (m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
+ (m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
+ "16-bit Slow RAM";
+ ram_resource[i].start = m68k_memory[i].addr;
+ ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
+ request_resource(&iomem_resource, &ram_resource[i]);
+ }
+
+ /* initialize chipram allocator */
+ amiga_chip_init();
+
+ /* our beloved beeper */
+ if (AMIGAHW_PRESENT(AMI_AUDIO))
+ amiga_init_sound();
+
+ /*
+ * if it is an A3000, set the magic bit that forces
+ * a hard rekick
+ */
+ if (AMIGAHW_PRESENT(MAGIC_REKICK))
+ *(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
+}
+
+static u64 amiga_read_clk(struct clocksource *cs);
+
+static struct clocksource amiga_clk = {
+ .name = "ciab",
+ .rating = 250,
+ .read = amiga_read_clk,
+ .mask = CLOCKSOURCE_MASK(32),
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+static unsigned short jiffy_ticks;
+static u32 clk_total, clk_offset;
+
+static irqreturn_t ciab_timer_handler(int irq, void *dev_id)
+{
+ clk_total += jiffy_ticks;
+ clk_offset = 0;
+ legacy_timer_tick(1);
+ timer_heartbeat();
+
+ return IRQ_HANDLED;
+}
+
+static void __init amiga_sched_init(void)
+{
+ static struct resource sched_res = {
+ .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
+ };
+ jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
+
+ if (request_resource(&mb_resources._ciab, &sched_res))
+ pr_warn("Cannot allocate ciab.ta{lo,hi}\n");
+ ciab.cra &= 0xC0; /* turn off timer A, continuous mode, from Eclk */
+ ciab.talo = jiffy_ticks % 256;
+ ciab.tahi = jiffy_ticks / 256;
+
+ /* install interrupt service routine for CIAB Timer A
+ *
+ * Please don't change this to use ciaa, as it interferes with the
+ * SCSI code. We'll have to take a look at this later
+ */
+ if (request_irq(IRQ_AMIGA_CIAB_TA, ciab_timer_handler, IRQF_TIMER,
+ "timer", NULL))
+ pr_err("Couldn't register timer interrupt\n");
+ /* start timer */
+ ciab.cra |= 0x11;
+
+ clocksource_register_hz(&amiga_clk, amiga_eclock);
+}
+
+static u64 amiga_read_clk(struct clocksource *cs)
+{
+ unsigned short hi, lo, hi2;
+ unsigned long flags;
+ u32 ticks;
+
+ local_irq_save(flags);
+
+ /* read CIA B timer A current value */
+ hi = ciab.tahi;
+ lo = ciab.talo;
+ hi2 = ciab.tahi;
+
+ if (hi != hi2) {
+ lo = ciab.talo;
+ hi = hi2;
+ }
+
+ ticks = hi << 8 | lo;
+
+ if (ticks > jiffy_ticks / 2)
+ /* check for pending interrupt */
+ if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
+ clk_offset = jiffy_ticks;
+
+ ticks = jiffy_ticks - ticks;
+ ticks += clk_offset + clk_total;
+
+ local_irq_restore(flags);
+
+ return ticks;
+}
+
+static void amiga_reset(void) __noreturn;
+
+static void amiga_reset(void)
+{
+ unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
+ unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
+
+ local_irq_disable();
+ if (CPU_IS_040_OR_060)
+ /* Setup transparent translation registers for mapping
+ * of 16 MB kernel segment before disabling translation
+ */
+ asm volatile ("\n"
+ " move.l %0,%%d0\n"
+ " and.l #0xff000000,%%d0\n"
+ " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */
+ " .chip 68040\n"
+ " movec %%d0,%%itt0\n"
+ " movec %%d0,%%dtt0\n"
+ " .chip 68k\n"
+ " jmp %0@\n"
+ : /* no outputs */
+ : "a" (jmp_addr040)
+ : "d0");
+ else
+ /* for 680[23]0, just disable translation and jump to the physical
+ * address of the label
+ */
+ asm volatile ("\n"
+ " pmove %%tc,%@\n"
+ " bclr #7,%@\n"
+ " pmove %@,%%tc\n"
+ " jmp %0@\n"
+ : /* no outputs */
+ : "a" (jmp_addr));
+jmp_addr_label040:
+ /* disable translation on '040 now */
+ asm volatile ("\n"
+ " moveq #0,%%d0\n"
+ " .chip 68040\n"
+ " movec %%d0,%%tc\n" /* disable MMU */
+ " .chip 68k\n"
+ : /* no outputs */
+ : /* no inputs */
+ : "d0");
+
+ jmp_addr_label:
+ /* pickup reset address from AmigaOS ROM, reset devices and jump
+ * to reset address
+ */
+ asm volatile ("\n"
+ " move.w #0x2700,%sr\n"
+ " lea 0x01000000,%a0\n"
+ " sub.l %a0@(-0x14),%a0\n"
+ " move.l %a0@(4),%a0\n"
+ " subq.l #2,%a0\n"
+ " jra 1f\n"
+ /* align on a longword boundary */
+ " " __ALIGN_STR "\n"
+ "1:\n"
+ " reset\n"
+ " jmp %a0@");
+
+ for (;;)
+ ;
+}
+
+
+ /*
+ * Debugging
+ */
+
+#define SAVEKMSG_MAXMEM 128*1024
+
+#define SAVEKMSG_MAGIC1 0x53415645 /* 'SAVE' */
+#define SAVEKMSG_MAGIC2 0x4B4D5347 /* 'KMSG' */
+
+struct savekmsg {
+ unsigned long magic1; /* SAVEKMSG_MAGIC1 */
+ unsigned long magic2; /* SAVEKMSG_MAGIC2 */
+ unsigned long magicptr; /* address of magic1 */
+ unsigned long size;
+ char data[];
+};
+
+static struct savekmsg *savekmsg;
+
+static void amiga_mem_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
+ memcpy(savekmsg->data + savekmsg->size, s, count);
+ savekmsg->size += count;
+ }
+}
+
+static int __init amiga_savekmsg_setup(char *arg)
+{
+ bool registered;
+
+ if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
+ return 0;
+
+ if (amiga_chip_size < SAVEKMSG_MAXMEM) {
+ pr_err("Not enough chipram for debugging\n");
+ return -ENOMEM;
+ }
+
+ /* Just steal the block, the chipram allocator isn't functional yet */
+ amiga_chip_size -= SAVEKMSG_MAXMEM;
+ savekmsg = ZTWO_VADDR(CHIP_PHYSADDR + amiga_chip_size);
+ savekmsg->magic1 = SAVEKMSG_MAGIC1;
+ savekmsg->magic2 = SAVEKMSG_MAGIC2;
+ savekmsg->magicptr = ZTWO_PADDR(savekmsg);
+ savekmsg->size = 0;
+
+ registered = !!amiga_console_driver.write;
+ amiga_console_driver.write = amiga_mem_console_write;
+ if (!registered)
+ register_console(&amiga_console_driver);
+ return 0;
+}
+
+early_param("debug", amiga_savekmsg_setup);
+
+static void amiga_serial_putc(char c)
+{
+ amiga_custom.serdat = (unsigned char)c | 0x100;
+ while (!(amiga_custom.serdatr & 0x2000))
+ ;
+}
+
+static void amiga_serial_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ while (count--) {
+ if (*s == '\n')
+ amiga_serial_putc('\r');
+ amiga_serial_putc(*s++);
+ }
+}
+
+#if 0
+void amiga_serial_puts(const char *s)
+{
+ amiga_serial_console_write(NULL, s, strlen(s));
+}
+
+int amiga_serial_console_wait_key(struct console *co)
+{
+ int ch;
+
+ while (!(amiga_custom.intreqr & IF_RBF))
+ barrier();
+ ch = amiga_custom.serdatr & 0xff;
+ /* clear the interrupt, so that another character can be read */
+ amiga_custom.intreq = IF_RBF;
+ return ch;
+}
+
+void amiga_serial_gets(struct console *co, char *s, int len)
+{
+ int ch, cnt = 0;
+
+ while (1) {
+ ch = amiga_serial_console_wait_key(co);
+
+ /* Check for backspace. */
+ if (ch == 8 || ch == 127) {
+ if (cnt == 0) {
+ amiga_serial_putc('\007');
+ continue;
+ }
+ cnt--;
+ amiga_serial_puts("\010 \010");
+ continue;
+ }
+
+ /* Check for enter. */
+ if (ch == 10 || ch == 13)
+ break;
+
+ /* See if line is too long. */
+ if (cnt >= len + 1) {
+ amiga_serial_putc(7);
+ cnt--;
+ continue;
+ }
+
+ /* Store and echo character. */
+ s[cnt++] = ch;
+ amiga_serial_putc(ch);
+ }
+ /* Print enter. */
+ amiga_serial_puts("\r\n");
+ s[cnt] = 0;
+}
+#endif
+
+static int __init amiga_debug_setup(char *arg)
+{
+ bool registered;
+
+ if (!MACH_IS_AMIGA || strcmp(arg, "ser"))
+ return 0;
+
+ /* no initialization required (?) */
+ registered = !!amiga_console_driver.write;
+ amiga_console_driver.write = amiga_serial_console_write;
+ if (!registered)
+ register_console(&amiga_console_driver);
+ return 0;
+}
+
+early_param("debug", amiga_debug_setup);
+
+#ifdef CONFIG_HEARTBEAT
+static void amiga_heartbeat(int on)
+{
+ if (on)
+ ciaa.pra &= ~2;
+ else
+ ciaa.pra |= 2;
+}
+#endif
+
+ /*
+ * Amiga specific parts of /proc
+ */
+
+static void amiga_get_model(char *model)
+{
+ strcpy(model, amiga_model_name);
+}
+
+
+static void amiga_get_hardware_list(struct seq_file *m)
+{
+ if (AMIGAHW_PRESENT(CHIP_RAM))
+ seq_printf(m, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
+ seq_printf(m, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
+ amiga_psfreq, amiga_eclock);
+ if (AMIGAHW_PRESENT(AMI_VIDEO)) {
+ char *type;
+ switch (amiga_chipset) {
+ case CS_OCS:
+ type = "OCS";
+ break;
+ case CS_ECS:
+ type = "ECS";
+ break;
+ case CS_AGA:
+ type = "AGA";
+ break;
+ default:
+ type = "Old or Unknown";
+ break;
+ }
+ seq_printf(m, "Graphics:\t%s\n", type);
+ }
+
+#define AMIGAHW_ANNOUNCE(name, str) \
+ if (AMIGAHW_PRESENT(name)) \
+ seq_printf (m, "\t%s\n", str)
+
+ seq_puts(m, "Detected hardware:\n");
+ AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
+ AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
+ AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
+ AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
+ AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
+ AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
+ AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
+ AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
+ AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
+ AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
+ AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
+ AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
+ AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
+ AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
+ AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
+ AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
+ AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
+ AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
+ AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
+ AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
+ AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
+ AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
+ AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
+ AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
+ AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
+ AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
+ AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
+ AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
+ AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
+#ifdef CONFIG_ZORRO
+ if (AMIGAHW_PRESENT(ZORRO))
+ seq_printf(m, "\tZorro II%s AutoConfig: %d Expansion "
+ "Device%s\n",
+ AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
+ zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
+#endif /* CONFIG_ZORRO */
+
+#undef AMIGAHW_ANNOUNCE
+}
+
+/*
+ * The Amiga keyboard driver needs key_maps, but we cannot export it in
+ * drivers/char/defkeymap.c, as it is autogenerated
+ */
+#ifdef CONFIG_HW_CONSOLE
+EXPORT_SYMBOL_GPL(key_maps);
+#endif
diff --git a/arch/m68k/amiga/pcmcia.c b/arch/m68k/amiga/pcmcia.c
new file mode 100644
index 0000000000..7106f0c363
--- /dev/null
+++ b/arch/m68k/amiga/pcmcia.c
@@ -0,0 +1,122 @@
+/*
+** asm-m68k/pcmcia.c -- Amiga Linux PCMCIA support
+** most information was found by disassembling card.resource
+** I'm still looking for an official doc !
+**
+** Copyright 1997 by Alain Malek
+**
+** 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.
+**
+** Created: 12/10/97 by Alain Malek
+*/
+
+#include <linux/types.h>
+#include <linux/jiffies.h>
+#include <linux/timer.h>
+#include <linux/module.h>
+
+#include <asm/amigayle.h>
+#include <asm/amipcmcia.h>
+
+/* gayle config byte for program voltage and access speed */
+static unsigned char cfg_byte = GAYLE_CFG_0V|GAYLE_CFG_150NS;
+
+void pcmcia_reset(void)
+{
+ unsigned long reset_start_time = jiffies;
+ unsigned char b;
+
+ gayle_reset = 0x00;
+ while (time_before(jiffies, reset_start_time + 1*HZ/100));
+ b = gayle_reset;
+}
+EXPORT_SYMBOL(pcmcia_reset);
+
+
+/* copy a tuple, including tuple header. return nb bytes copied */
+/* be careful as this may trigger a GAYLE_IRQ_WR interrupt ! */
+
+int pcmcia_copy_tuple(unsigned char tuple_id, void *tuple, int max_len)
+{
+ unsigned char id, *dest;
+ int cnt, pos, len;
+
+ dest = tuple;
+ pos = 0;
+
+ id = gayle_attribute[pos];
+
+ while((id != CISTPL_END) && (pos < 0x10000)) {
+ len = (int)gayle_attribute[pos+2] + 2;
+ if (id == tuple_id) {
+ len = (len > max_len)?max_len:len;
+ for (cnt = 0; cnt < len; cnt++) {
+ *dest++ = gayle_attribute[pos+(cnt<<1)];
+ }
+
+ return len;
+ }
+ pos += len<<1;
+ id = gayle_attribute[pos];
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(pcmcia_copy_tuple);
+
+void pcmcia_program_voltage(int voltage)
+{
+ unsigned char v;
+
+ switch (voltage) {
+ case PCMCIA_0V:
+ v = GAYLE_CFG_0V;
+ break;
+ case PCMCIA_5V:
+ v = GAYLE_CFG_5V;
+ break;
+ case PCMCIA_12V:
+ v = GAYLE_CFG_12V;
+ break;
+ default:
+ v = GAYLE_CFG_0V;
+ }
+
+ cfg_byte = (cfg_byte & 0xfc) | v;
+ gayle.config = cfg_byte;
+
+}
+EXPORT_SYMBOL(pcmcia_program_voltage);
+
+void pcmcia_access_speed(int speed)
+{
+ unsigned char s;
+
+ if (speed <= PCMCIA_SPEED_100NS)
+ s = GAYLE_CFG_100NS;
+ else if (speed <= PCMCIA_SPEED_150NS)
+ s = GAYLE_CFG_150NS;
+ else if (speed <= PCMCIA_SPEED_250NS)
+ s = GAYLE_CFG_250NS;
+ else
+ s = GAYLE_CFG_720NS;
+
+ cfg_byte = (cfg_byte & 0xf3) | s;
+ gayle.config = cfg_byte;
+}
+EXPORT_SYMBOL(pcmcia_access_speed);
+
+void pcmcia_write_enable(void)
+{
+ gayle.cardstatus = GAYLE_CS_WR|GAYLE_CS_DA;
+}
+EXPORT_SYMBOL(pcmcia_write_enable);
+
+void pcmcia_write_disable(void)
+{
+ gayle.cardstatus = 0;
+}
+EXPORT_SYMBOL(pcmcia_write_disable);
+
diff --git a/arch/m68k/amiga/platform.c b/arch/m68k/amiga/platform.c
new file mode 100644
index 0000000000..d34029d7b0
--- /dev/null
+++ b/arch/m68k/amiga/platform.c
@@ -0,0 +1,255 @@
+/*
+ * Copyright (C) 2007-2009 Geert Uytterhoeven
+ *
+ * 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.
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/zorro.h>
+
+#include <asm/amigahw.h>
+#include <asm/amigayle.h>
+#include <asm/byteorder.h>
+
+
+#ifdef CONFIG_ZORRO
+
+static const struct resource zorro_resources[] __initconst = {
+ /* Zorro II regions (on Zorro II/III) */
+ {
+ .name = "Zorro II exp",
+ .start = 0x00e80000,
+ .end = 0x00efffff,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .name = "Zorro II mem",
+ .start = 0x00200000,
+ .end = 0x009fffff,
+ .flags = IORESOURCE_MEM,
+ },
+ /* Zorro III regions (on Zorro III only) */
+ {
+ .name = "Zorro III exp",
+ .start = 0xff000000,
+ .end = 0xffffffff,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .name = "Zorro III cfg",
+ .start = 0x40000000,
+ .end = 0x7fffffff,
+ .flags = IORESOURCE_MEM,
+ }
+};
+
+
+static int __init amiga_init_bus(void)
+{
+ struct platform_device *pdev;
+ unsigned int n;
+
+ if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(ZORRO))
+ return -ENODEV;
+
+ n = AMIGAHW_PRESENT(ZORRO3) ? 4 : 2;
+ pdev = platform_device_register_simple("amiga-zorro", -1,
+ zorro_resources, n);
+ return PTR_ERR_OR_ZERO(pdev);
+}
+
+subsys_initcall(amiga_init_bus);
+
+
+static int __init z_dev_present(zorro_id id)
+{
+ unsigned int i;
+
+ for (i = 0; i < zorro_num_autocon; i++) {
+ const struct ExpansionRom *rom = &zorro_autocon_init[i].rom;
+ if (be16_to_cpu(rom->er_Manufacturer) == ZORRO_MANUF(id) &&
+ rom->er_Product == ZORRO_PROD(id))
+ return 1;
+ }
+
+ return 0;
+}
+
+#else /* !CONFIG_ZORRO */
+
+static inline int z_dev_present(zorro_id id) { return 0; }
+
+#endif /* !CONFIG_ZORRO */
+
+
+static const struct resource a3000_scsi_resource __initconst = {
+ .start = 0xdd0000,
+ .end = 0xdd00ff,
+ .flags = IORESOURCE_MEM,
+};
+
+
+static const struct resource a4000t_scsi_resource __initconst = {
+ .start = 0xdd0000,
+ .end = 0xdd0fff,
+ .flags = IORESOURCE_MEM,
+};
+
+
+static const struct resource a1200_ide_resource __initconst = {
+ .start = 0xda0000,
+ .end = 0xda1fff,
+ .flags = IORESOURCE_MEM,
+};
+
+static const struct gayle_ide_platform_data a1200_ide_pdata __initconst = {
+ .base = 0xda0000,
+ .irqport = 0xda9000,
+ .explicit_ack = 1,
+};
+
+
+static const struct resource a4000_ide_resource __initconst = {
+ .start = 0xdd2000,
+ .end = 0xdd3fff,
+ .flags = IORESOURCE_MEM,
+};
+
+static const struct gayle_ide_platform_data a4000_ide_pdata __initconst = {
+ .base = 0xdd2020,
+ .irqport = 0xdd3020,
+ .explicit_ack = 0,
+};
+
+
+static const struct resource amiga_rtc_resource __initconst = {
+ .start = 0x00dc0000,
+ .end = 0x00dcffff,
+ .flags = IORESOURCE_MEM,
+};
+
+
+static int __init amiga_init_devices(void)
+{
+ struct platform_device *pdev;
+ int error;
+
+ if (!MACH_IS_AMIGA)
+ return -ENODEV;
+
+ /* video hardware */
+ if (AMIGAHW_PRESENT(AMI_VIDEO)) {
+ pdev = platform_device_register_simple("amiga-video", -1, NULL,
+ 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+
+ /* sound hardware */
+ if (AMIGAHW_PRESENT(AMI_AUDIO)) {
+ pdev = platform_device_register_simple("amiga-audio", -1, NULL,
+ 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+
+ /* storage interfaces */
+ if (AMIGAHW_PRESENT(AMI_FLOPPY)) {
+ pdev = platform_device_register_simple("amiga-floppy", -1,
+ NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(A3000_SCSI)) {
+ pdev = platform_device_register_simple("amiga-a3000-scsi", -1,
+ &a3000_scsi_resource, 1);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(A4000_SCSI)) {
+ pdev = platform_device_register_simple("amiga-a4000t-scsi", -1,
+ &a4000t_scsi_resource,
+ 1);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(A1200_IDE) ||
+ z_dev_present(ZORRO_PROD_MTEC_VIPER_MK_V_E_MATRIX_530_SCSI_IDE)) {
+ pdev = platform_device_register_simple("amiga-gayle-ide", -1,
+ &a1200_ide_resource, 1);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ error = platform_device_add_data(pdev, &a1200_ide_pdata,
+ sizeof(a1200_ide_pdata));
+ if (error)
+ return error;
+ }
+
+ if (AMIGAHW_PRESENT(A4000_IDE)) {
+ pdev = platform_device_register_simple("amiga-gayle-ide", -1,
+ &a4000_ide_resource, 1);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ error = platform_device_add_data(pdev, &a4000_ide_pdata,
+ sizeof(a4000_ide_pdata));
+ if (error)
+ return error;
+ }
+
+
+ /* other I/O hardware */
+ if (AMIGAHW_PRESENT(AMI_KEYBOARD)) {
+ pdev = platform_device_register_simple("amiga-keyboard", -1,
+ NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(AMI_MOUSE)) {
+ pdev = platform_device_register_simple("amiga-mouse", -1, NULL,
+ 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(AMI_SERIAL)) {
+ pdev = platform_device_register_simple("amiga-serial", -1,
+ NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(AMI_PARALLEL)) {
+ pdev = platform_device_register_simple("amiga-parallel", -1,
+ NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+
+ /* real time clocks */
+ if (AMIGAHW_PRESENT(A2000_CLK)) {
+ pdev = platform_device_register_simple("rtc-msm6242", -1,
+ &amiga_rtc_resource, 1);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ if (AMIGAHW_PRESENT(A3000_CLK)) {
+ pdev = platform_device_register_simple("rtc-rp5c01", -1,
+ &amiga_rtc_resource, 1);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+ }
+
+ return 0;
+}
+
+arch_initcall(amiga_init_devices);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 15:00:44 +0000