select ARC32
select ARCH_MAY_HAVE_PC_FDC
select GENERIC_ISA_DMA
+ select IRQ_CPU
select I8259
select ISA
select PCSPEAKER
# Makefile for the Jazz family specific parts of the kernel
#
-obj-y := irq.o jazzdma.o jazz-platform.o reset.o setup.o
+obj-y := irq.o jazzdma.o reset.o setup.o
EXTRA_CFLAGS += -Werror
#include <linux/kernel.h>
#include <linux/spinlock.h>
+#include <asm/irq_cpu.h>
#include <asm/i8259.h>
#include <asm/io.h>
#include <asm/jazz.h>
+#include <asm/pgtable.h>
static DEFINE_SPINLOCK(r4030_lock);
static void enable_r4030_irq(unsigned int irq)
{
- unsigned int mask = 1 << (irq - JAZZ_PARALLEL_IRQ);
+ unsigned int mask = 1 << (irq - JAZZ_IRQ_START);
unsigned long flags;
spin_lock_irqsave(&r4030_lock, flags);
void disable_r4030_irq(unsigned int irq)
{
- unsigned int mask = ~(1 << (irq - JAZZ_PARALLEL_IRQ));
+ unsigned int mask = ~(1 << (irq - JAZZ_IRQ_START));
unsigned long flags;
spin_lock_irqsave(&r4030_lock, flags);
{
int i;
- for (i = JAZZ_PARALLEL_IRQ; i <= JAZZ_TIMER_IRQ; i++)
+ for (i = JAZZ_IRQ_START; i <= JAZZ_IRQ_END; i++)
set_irq_chip_and_handler(i, &r4030_irq_type, handle_level_irq);
r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 0);
*/
void __init arch_init_irq(void)
{
+ /*
+ * this is a hack to get back the still needed wired mapping
+ * killed by init_mm()
+ */
+
+ /* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
+ add_wired_entry(0x02000017, 0x03c00017, 0xe0000000, PM_64K);
+ /* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
+ add_wired_entry(0x02400017, 0x02440017, 0xe2000000, PM_16M);
+ /* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
+ add_wired_entry(0x01800017, 0x01000017, 0xe4000000, PM_4M);
+
init_i8259_irqs(); /* Integrated i8259 */
+ mips_cpu_irq_init();
init_r4030_ints();
- change_c0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
-}
-
-static void loc_call(unsigned int irq, unsigned int mask)
-{
- r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
- r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) & mask);
- do_IRQ(irq);
- r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
- r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | mask);
-}
-
-static void ll_local_dev(void)
-{
- switch (r4030_read_reg32(JAZZ_IO_IRQ_SOURCE)) {
- case 0:
- panic("Unimplemented loc_no_irq handler");
- break;
- case 4:
- loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_PARALLEL);
- break;
- case 8:
- loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_FLOPPY);
- break;
- case 12:
- panic("Unimplemented loc_sound handler");
- break;
- case 16:
- panic("Unimplemented loc_video handler");
- break;
- case 20:
- loc_call(JAZZ_ETHERNET_IRQ, JAZZ_IE_ETHERNET);
- break;
- case 24:
- loc_call(JAZZ_SCSI_IRQ, JAZZ_IE_SCSI);
- break;
- case 28:
- loc_call(JAZZ_KEYBOARD_IRQ, JAZZ_IE_KEYBOARD);
- break;
- case 32:
- loc_call(JAZZ_MOUSE_IRQ, JAZZ_IE_MOUSE);
- break;
- case 36:
- loc_call(JAZZ_SERIAL1_IRQ, JAZZ_IE_SERIAL1);
- break;
- case 40:
- loc_call(JAZZ_SERIAL2_IRQ, JAZZ_IE_SERIAL2);
- break;
- }
+ change_c0_status(ST0_IM, IE_IRQ2 | IE_IRQ1);
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending = read_c0_cause() & read_c0_status();
+ unsigned int irq;
- if (pending & IE_IRQ5)
- write_c0_compare(0);
- else if (pending & IE_IRQ4) {
+ if (pending & IE_IRQ4) {
r4030_read_reg32(JAZZ_TIMER_REGISTER);
do_IRQ(JAZZ_TIMER_IRQ);
- } else if (pending & IE_IRQ3)
- panic("Unimplemented ISA NMI handler");
- else if (pending & IE_IRQ2)
+ } else if (pending & IE_IRQ2)
do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK));
else if (pending & IE_IRQ1) {
- ll_local_dev();
- } else if (unlikely(pending & IE_IRQ0))
- panic("Unimplemented local_dma handler");
- else if (pending & IE_SW1) {
- clear_c0_cause(IE_SW1);
- panic("Unimplemented sw1 handler");
- } else if (pending & IE_SW0) {
- clear_c0_cause(IE_SW0);
- panic("Unimplemented sw0 handler");
+ irq = *(volatile u8 *)JAZZ_IO_IRQ_SOURCE >> 2;
+ if (likely(irq > 0))
+ do_IRQ(irq + JAZZ_IRQ_START - 1);
+ else
+ panic("Unimplemented loc_no_irq handler");
}
}
+++ /dev/null
-/*
- * 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.
- *
- * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
- */
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/serial_8250.h>
-
-#include <asm/jazz.h>
-
-/*
- * Confusion ... It seems the original Microsoft Jazz machine used to have a
- * 4.096MHz clock for its UART while the MIPS Magnum and Millenium systems
- * had 8MHz. The Olivetti M700-10 and the Acer PICA have 1.8432MHz like PCs.
- */
-#ifdef CONFIG_OLIVETTI_M700
-#define JAZZ_BASE_BAUD 1843200
-#else
-#define JAZZ_BASE_BAUD 8000000 /* 3072000 */
-#endif
-
-#define JAZZ_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
-
-#define JAZZ_PORT(base, int) \
-{ \
- .mapbase = base, \
- .irq = int, \
- .uartclk = JAZZ_BASE_BAUD, \
- .iotype = UPIO_MEM, \
- .flags = JAZZ_UART_FLAGS, \
- .regshift = 0, \
-}
-
-static struct plat_serial8250_port uart8250_data[] = {
- JAZZ_PORT(JAZZ_SERIAL1_BASE, JAZZ_SERIAL1_IRQ),
- JAZZ_PORT(JAZZ_SERIAL2_BASE, JAZZ_SERIAL2_IRQ),
- { },
-};
-
-static struct platform_device uart8250_device = {
- .name = "serial8250",
- .id = PLAT8250_DEV_PLATFORM,
- .dev = {
- .platform_data = uart8250_data,
- },
-};
-
-static int __init uart8250_init(void)
-{
- return platform_device_register(&uart8250_device);
-}
-
-module_init(uart8250_init);
-
-MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("8250 UART probe driver for the Jazz family");
*/
#define CONF_DEBUG_VDMA 0
-static unsigned long vdma_pagetable_start;
+static VDMA_PGTBL_ENTRY *pgtbl;
static DEFINE_SPINLOCK(vdma_lock);
*/
static inline void vdma_pgtbl_init(void)
{
- VDMA_PGTBL_ENTRY *pgtbl = (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
unsigned long paddr = 0;
int i;
/*
* Initialize the Jazz R4030 dma controller
*/
-void __init vdma_init(void)
+static int __init vdma_init(void)
{
/*
* Allocate 32k of memory for DMA page tables. This needs to be page
* aligned and should be uncached to avoid cache flushing after every
* update.
*/
- vdma_pagetable_start =
- (unsigned long) alloc_bootmem_low_pages(VDMA_PGTBL_SIZE);
- if (!vdma_pagetable_start)
+ pgtbl = (VDMA_PGTBL_ENTRY *)__get_free_pages(GFP_KERNEL | GFP_DMA,
+ get_order(VDMA_PGTBL_SIZE));
+ if (!pgtbl)
BUG();
- dma_cache_wback_inv(vdma_pagetable_start, VDMA_PGTBL_SIZE);
- vdma_pagetable_start = KSEG1ADDR(vdma_pagetable_start);
+ dma_cache_wback_inv((unsigned long)pgtbl, VDMA_PGTBL_SIZE);
+ pgtbl = (VDMA_PGTBL_ENTRY *)KSEG1ADDR(pgtbl);
/*
* Clear the R4030 translation table
*/
vdma_pgtbl_init();
- r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE,
- CPHYSADDR(vdma_pagetable_start));
+ r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE, CPHYSADDR(pgtbl));
r4030_write_reg32(JAZZ_R4030_TRSTBL_LIM, VDMA_PGTBL_SIZE);
r4030_write_reg32(JAZZ_R4030_TRSTBL_INV, 0);
- printk("VDMA: R4030 DMA pagetables initialized.\n");
+ printk(KERN_INFO "VDMA: R4030 DMA pagetables initialized.\n");
+ return 0;
}
/*
*/
unsigned long vdma_alloc(unsigned long paddr, unsigned long size)
{
- VDMA_PGTBL_ENTRY *entry = (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
int first, last, pages, frame, i;
unsigned long laddr, flags;
/*
* Find free chunk
*/
- pages = (size + 4095) >> 12; /* no. of pages to allocate */
+ pages = VDMA_PAGE(paddr + size) - VDMA_PAGE(paddr) + 1;
first = 0;
while (1) {
- while (entry[first].owner != VDMA_PAGE_EMPTY &&
+ while (pgtbl[first].owner != VDMA_PAGE_EMPTY &&
first < VDMA_PGTBL_ENTRIES) first++;
if (first + pages > VDMA_PGTBL_ENTRIES) { /* nothing free */
spin_unlock_irqrestore(&vdma_lock, flags);
}
last = first + 1;
- while (entry[last].owner == VDMA_PAGE_EMPTY
+ while (pgtbl[last].owner == VDMA_PAGE_EMPTY
&& last - first < pages)
last++;
if (last - first == pages)
break; /* found */
+ first = last + 1;
}
/*
frame = paddr & ~(VDMA_PAGESIZE - 1);
for (i = first; i < last; i++) {
- entry[i].frame = frame;
- entry[i].owner = laddr;
+ pgtbl[i].frame = frame;
+ pgtbl[i].owner = laddr;
frame += VDMA_PAGESIZE;
}
printk("%08x ", i << 12);
printk("\nPADDR: ");
for (i = first; i < last; i++)
- printk("%08x ", entry[i].frame);
+ printk("%08x ", pgtbl[i].frame);
printk("\nOWNER: ");
for (i = first; i < last; i++)
- printk("%08x ", entry[i].owner);
+ printk("%08x ", pgtbl[i].owner);
printk("\n");
}
*/
int vdma_free(unsigned long laddr)
{
- VDMA_PGTBL_ENTRY *pgtbl = (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
int i;
i = laddr >> 12;
*/
int vdma_remap(unsigned long laddr, unsigned long paddr, unsigned long size)
{
- VDMA_PGTBL_ENTRY *pgtbl =
- (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
int first, pages, npages;
if (laddr > 0xffffff) {
{
int i;
int frame;
- VDMA_PGTBL_ENTRY *pgtbl =
- (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
frame = paddr & ~(VDMA_PAGESIZE - 1);
*/
unsigned long vdma_log2phys(unsigned long laddr)
{
- VDMA_PGTBL_ENTRY *pgtbl =
- (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
-
return pgtbl[laddr >> 12].frame + (laddr & (VDMA_PAGESIZE - 1));
}
return enable;
}
+
+arch_initcall(vdma_init);
*
* Copyright (C) 1996, 1997, 1998, 2001 by Ralf Baechle
* Copyright (C) 2001 MIPS Technologies, Inc.
+ * Copyright (C) 2007 by Thomas Bogendoerfer
*/
#include <linux/eisa.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/pm.h>
#include <linux/screen_info.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/time.h>
#include <asm/traps.h>
+#include <asm/mc146818-time.h>
extern asmlinkage void jazz_handle_int(void);
/* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
-
/* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
-
/* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
_machine_restart = jazz_machine_restart;
+#ifdef CONFIG_VT
screen_info = (struct screen_info) {
0, 0, /* orig-x, orig-y */
0, /* unused */
0, /* orig_video_isVGA */
16 /* orig_video_points */
};
+#endif
- vdma_init();
+ add_preferred_console("ttyS", 0, "9600");
}
+
+#ifdef CONFIG_OLIVETTI_M700
+#define UART_CLK 1843200
+#else
+/* Some Jazz machines seem to have an 8MHz crystal clock but I don't know
+ exactly which ones ... XXX */
+#define UART_CLK (8000000 / 16) /* ( 3072000 / 16) */
+#endif
+
+#define MEMPORT(_base, _irq) \
+ { \
+ .mapbase = (_base), \
+ .membase = (void *)(_base), \
+ .irq = (_irq), \
+ .uartclk = UART_CLK, \
+ .iotype = UPIO_MEM, \
+ .flags = UPF_BOOT_AUTOCONF, \
+ }
+
+static struct plat_serial8250_port jazz_serial_data[] = {
+ MEMPORT(JAZZ_SERIAL1_BASE, JAZZ_SERIAL1_IRQ),
+ MEMPORT(JAZZ_SERIAL2_BASE, JAZZ_SERIAL2_IRQ),
+ { },
+};
+
+static struct platform_device jazz_serial8250_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = jazz_serial_data,
+ },
+};
+
+static struct resource jazz_esp_rsrc[] = {
+ {
+ .start = JAZZ_SCSI_BASE,
+ .end = JAZZ_SCSI_BASE + 31,
+ .flags = IORESOURCE_MEM
+ },
+ {
+ .start = JAZZ_SCSI_DMA,
+ .end = JAZZ_SCSI_DMA,
+ .flags = IORESOURCE_MEM
+ },
+ {
+ .start = JAZZ_SCSI_IRQ,
+ .end = JAZZ_SCSI_IRQ,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static struct platform_device jazz_esp_pdev = {
+ .name = "jazz_esp",
+ .num_resources = ARRAY_SIZE(jazz_esp_rsrc),
+ .resource = jazz_esp_rsrc
+};
+
+static struct resource jazz_sonic_rsrc[] = {
+ {
+ .start = JAZZ_ETHERNET_BASE,
+ .end = JAZZ_ETHERNET_BASE + 0xff,
+ .flags = IORESOURCE_MEM
+ },
+ {
+ .start = JAZZ_ETHERNET_IRQ,
+ .end = JAZZ_ETHERNET_IRQ,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static struct platform_device jazz_sonic_pdev = {
+ .name = "jazzsonic",
+ .num_resources = ARRAY_SIZE(jazz_sonic_rsrc),
+ .resource = jazz_sonic_rsrc
+};
+
+static struct resource jazz_cmos_rsrc[] = {
+ {
+ .start = 0x70,
+ .end = 0x71,
+ .flags = IORESOURCE_IO
+ },
+ {
+ .start = 8,
+ .end = 8,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static struct platform_device jazz_cmos_pdev = {
+ .name = "rtc_cmos",
+ .num_resources = ARRAY_SIZE(jazz_cmos_rsrc),
+ .resource = jazz_cmos_rsrc
+};
+
+static int __init jazz_setup_devinit(void)
+{
+ platform_device_register(&jazz_serial8250_device);
+ platform_device_register(&jazz_esp_pdev);
+ platform_device_register(&jazz_sonic_pdev);
+ platform_device_register(&jazz_cmos_pdev);
+ return 0;
+}
+
+device_initcall(jazz_setup_devinit);
#define JAZZ_IO_IRQ_ENABLE 0xe0010002
/*
- * JAZZ interrupt enable bits
- */
-#define JAZZ_IE_PARALLEL (1 << 0)
-#define JAZZ_IE_FLOPPY (1 << 1)
-#define JAZZ_IE_SOUND (1 << 2)
-#define JAZZ_IE_VIDEO (1 << 3)
-#define JAZZ_IE_ETHERNET (1 << 4)
-#define JAZZ_IE_SCSI (1 << 5)
-#define JAZZ_IE_KEYBOARD (1 << 6)
-#define JAZZ_IE_MOUSE (1 << 7)
-#define JAZZ_IE_SERIAL1 (1 << 8)
-#define JAZZ_IE_SERIAL2 (1 << 9)
-
-/*
* JAZZ Interrupt Level definitions
*
* This is somewhat broken. For reasons which nobody can remember anymore
* we remap the Jazz interrupts to the usual ISA style interrupt numbers.
*/
-#define JAZZ_PARALLEL_IRQ 16
-#define JAZZ_FLOPPY_IRQ 17
-#define JAZZ_SOUND_IRQ 18
-#define JAZZ_VIDEO_IRQ 19
-#define JAZZ_ETHERNET_IRQ 20
-#define JAZZ_SCSI_IRQ 21
-#define JAZZ_KEYBOARD_IRQ 22
-#define JAZZ_MOUSE_IRQ 23
-#define JAZZ_SERIAL1_IRQ 24
-#define JAZZ_SERIAL2_IRQ 25
-
-#define JAZZ_TIMER_IRQ 31
+#define JAZZ_IRQ_START 24
+#define JAZZ_IRQ_END (24 + 9)
+#define JAZZ_PARALLEL_IRQ (JAZZ_IRQ_START + 0)
+#define JAZZ_FLOPPY_IRQ (JAZZ_IRQ_START + 1)
+#define JAZZ_SOUND_IRQ (JAZZ_IRQ_START + 2)
+#define JAZZ_VIDEO_IRQ (JAZZ_IRQ_START + 3)
+#define JAZZ_ETHERNET_IRQ (JAZZ_IRQ_START + 4)
+#define JAZZ_SCSI_IRQ (JAZZ_IRQ_START + 5)
+#define JAZZ_KEYBOARD_IRQ (JAZZ_IRQ_START + 6)
+#define JAZZ_MOUSE_IRQ (JAZZ_IRQ_START + 7)
+#define JAZZ_SERIAL1_IRQ (JAZZ_IRQ_START + 8)
+#define JAZZ_SERIAL2_IRQ (JAZZ_IRQ_START + 9)
+
+#define JAZZ_TIMER_IRQ (MIPS_CPU_IRQ_BASE+6)
/*
/*
* Prototypes and macros
*/
-extern void vdma_init(void);
extern unsigned long vdma_alloc(unsigned long paddr, unsigned long size);
extern int vdma_free(unsigned long laddr);
extern int vdma_remap(unsigned long laddr, unsigned long paddr,
* for more details.
*
* Copyright (C) 1998, 2001, 03 by Ralf Baechle
+ * Copyright (C) 2007 Thomas Bogendoerfer
*
* RTC routines for Jazz style attached Dallas chip.
*/
#ifndef __ASM_MACH_JAZZ_MC146818RTC_H
#define __ASM_MACH_JAZZ_MC146818RTC_H
+#include <linux/delay.h>
+
#include <asm/io.h>
#include <asm/jazz.h>
static inline unsigned char CMOS_READ(unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
-
- return *(char *)JAZZ_RTC_BASE;
+ return *(volatile char *)JAZZ_RTC_BASE;
}
static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
- *(char *)JAZZ_RTC_BASE = data;
+ *(volatile char *)JAZZ_RTC_BASE = data;
}
#define RTC_ALWAYS_BCD 0
+#define mc146818_decode_year(year) ((year) + 1980)
+
#endif /* __ASM_MACH_JAZZ_MC146818RTC_H */
projects / platform / kernel / linux-starfive.git / commitdiff