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authorRalf Baechle <ralf@linux-mips.org>1999-01-17 03:49:37 +0000
committerRalf Baechle <ralf@linux-mips.org>1999-01-17 03:49:37 +0000
commit317b660279d583d4db3fc112e3ef2e56b20bec87 (patch)
treeedd0330546242932075dae028c437a613e2ad6b8 /arch/mips/baget
parent78c388aed2b7184182c08428db1de6c872d815f5 (diff)
First round of commits for support for DECstations and Bagets.
Diffstat (limited to 'arch/mips/baget')
-rw-r--r--arch/mips/baget/Makefile61
-rw-r--r--arch/mips/baget/baget.c104
-rw-r--r--arch/mips/baget/bagetIRQ.S98
-rw-r--r--arch/mips/baget/balo.c190
-rw-r--r--arch/mips/baget/balo_supp.S144
-rw-r--r--arch/mips/baget/irq.c436
-rw-r--r--arch/mips/baget/ld.script.balo124
-rw-r--r--arch/mips/baget/print.c118
-rw-r--r--arch/mips/baget/prom/Makefile15
-rw-r--r--arch/mips/baget/prom/init.c21
-rw-r--r--arch/mips/baget/reset.c32
-rw-r--r--arch/mips/baget/setup.c491
-rw-r--r--arch/mips/baget/time.c106
-rw-r--r--arch/mips/baget/vacserial.c2941
14 files changed, 4881 insertions, 0 deletions
diff --git a/arch/mips/baget/Makefile b/arch/mips/baget/Makefile
new file mode 100644
index 000000000..2980761be
--- /dev/null
+++ b/arch/mips/baget/Makefile
@@ -0,0 +1,61 @@
+# $Id$
+#
+# Makefile for the Baget specific kernel interface routines
+# under Linux.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are now in the main makefile...
+
+all: baget.a
+
+image: ../../../vmlinux
+ cp -f $< $@
+
+O_TARGET := baget.a
+O_OBJS := baget.o print.o setup.o irq.o time.o \
+ bagetIRQ.o vacserial.o reset.o
+
+bagetIRQ.o : bagetIRQ.S
+ $(CC) $(CFLAGS) -c -o $@ $<
+
+
+##################### Baget Loader stuff ########################
+
+dummy.c:
+ touch $@
+
+image.bin: image
+ $(OBJCOPY) -O binary $< $@
+
+ramdisk.bin:
+ echo "Dummy ramdisk used. Provide your own if needed !" > $@
+
+dummy.o: dummy.c image.bin ramdisk.bin
+ $(CC) $(CFLAGS) -c -o $@ $<
+ $(OBJCOPY) --add-section=.vmlinux=image.bin \
+ --add-section=.ramdisk=ramdisk.bin $@
+
+balo.h: image
+ $(NM) $< | awk ' \
+ BEGIN { printf "/* DO NOT EDIT THIS FILE */\n" } \
+ /kernel_entry/ { printf "#define START 0x%s\n", $$1 } \
+ /balo_ramdisk_base/ { printf "#define RAMDISK_BASE 0x%s\n", $$1 } \
+ /balo_ramdisk_size/ { printf "#define RAMDISK_SIZE 0x%s\n", $$1 } \
+ ' > $@
+balo.o: balo.c balo.h
+ $(CC) $(CFLAGS) -c $<
+
+balo_supp.o: balo_supp.S
+ $(CC) $(CFLAGS) -c $<
+
+balo: balo.o dummy.o balo_supp.o print.o
+ $(LD) $(LDFLAGS) -T ld.script.balo -o $@ $^
+
+clean:
+ rm -f balo.o balo.h dummy.o dummy.c hello.o image.bin image balo_supp.o
+ rm -f $(O_OBJS) $(O_TARGET)
+
+include $(TOPDIR)/Rules.make
diff --git a/arch/mips/baget/baget.c b/arch/mips/baget/baget.c
new file mode 100644
index 000000000..af61bd171
--- /dev/null
+++ b/arch/mips/baget/baget.c
@@ -0,0 +1,104 @@
+/* $Id$
+ *
+ * baget.c: Baget low level stuff
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ *
+ */
+#include <stdarg.h>
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <asm/system.h>
+#include <asm/bootinfo.h>
+#include <asm/mipsregs.h>
+#include <asm/pgtable.h>
+
+#include <asm/baget/baget.h>
+
+/*
+ * Following values are set by BALO into RAM disk buffer parameters
+ */
+unsigned long balo_ramdisk_base = 0xBA; /* Signature for BALO ! */
+unsigned long balo_ramdisk_size = 0;
+
+
+/*
+ * Following code is based on routines from 'mm/vmalloc.c'
+ * Additional parameters ioaddr is needed to iterate across real I/O address.
+ */
+static inline int alloc_area_pte(pte_t * pte, unsigned long address,
+ unsigned long size, unsigned long ioaddr)
+{
+ unsigned long end;
+
+ address &= ~PMD_MASK;
+ end = address + size;
+ if (end > PMD_SIZE)
+ end = PMD_SIZE;
+ while (address < end) {
+ unsigned long page;
+ if (!pte_none(*pte))
+ printk("kseg2_alloc_io: page already exists\n");
+ /*
+ * For MIPS looks pretty to have transparent mapping
+ * for KSEG2 areas -- user can't access one, and no
+ * problems with virtual <--> physical translation.
+ */
+ page = ioaddr & PAGE_MASK;
+
+ set_pte(pte, __pte(page | pgprot_val(PAGE_USERIO) |
+ _PAGE_GLOBAL | __READABLE | __WRITEABLE));
+ address += PAGE_SIZE;
+ ioaddr += PAGE_SIZE;
+ pte++;
+ }
+ return 0;
+}
+
+static inline int alloc_area_pmd(pmd_t * pmd, unsigned long address,
+ unsigned long size, unsigned long ioaddr)
+{
+ unsigned long end;
+
+ address &= ~PGDIR_MASK;
+ end = address + size;
+ if (end > PGDIR_SIZE)
+ end = PGDIR_SIZE;
+ while (address < end) {
+ pte_t * pte = pte_alloc_kernel(pmd, address);
+ if (!pte)
+ return -ENOMEM;
+ if (alloc_area_pte(pte, address, end - address, ioaddr))
+ return -ENOMEM;
+ address = (address + PMD_SIZE) & PMD_MASK;
+ ioaddr += PMD_SIZE;
+ pmd++;
+ }
+ return 0;
+}
+
+int kseg2_alloc_io (unsigned long address, unsigned long size)
+{
+ pgd_t * dir;
+ unsigned long end = address + size;
+
+ dir = pgd_offset_k(address);
+ flush_cache_all();
+ while (address < end) {
+ pmd_t *pmd;
+ pgd_t olddir = *dir;
+
+ pmd = pmd_alloc_kernel(dir, address);
+ if (!pmd)
+ return -ENOMEM;
+ if (alloc_area_pmd(pmd, address, end - address, address))
+ return -ENOMEM;
+ if (pgd_val(olddir) != pgd_val(*dir))
+ set_pgdir(address, *dir);
+ address = (address + PGDIR_SIZE) & PGDIR_MASK;
+ dir++;
+ }
+ flush_tlb_all();
+ return 0;
+}
diff --git a/arch/mips/baget/bagetIRQ.S b/arch/mips/baget/bagetIRQ.S
new file mode 100644
index 000000000..01dd5a64d
--- /dev/null
+++ b/arch/mips/baget/bagetIRQ.S
@@ -0,0 +1,98 @@
+/* $Id$
+ * bagetIRQ.S: Interrupt exception dispatch code for Baget/MIPS
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ */
+
+#include <asm/asm.h>
+#include <asm/mipsconfig.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+#include <asm/addrspace.h>
+
+ .text
+ .set mips1
+ .set reorder
+ .set macro
+ .set noat
+ .align 5
+
+NESTED(bagetIRQ, PT_SIZE, sp)
+ SAVE_ALL
+ CLI # Important: mark KERNEL mode !
+
+ la a1, baget_interrupt
+ .set push
+ .set noreorder
+ jal a1
+ .set pop
+ move a0, sp
+
+ la a1, ret_from_irq
+ jr a1
+END(bagetIRQ)
+
+#define DBE_HANDLER 0x1C
+
+NESTED(try_read, PT_SIZE, sp)
+ mfc0 t3, CP0_STATUS # save flags and
+ CLI # disable interrupts
+
+ li t0, KSEG2
+ sltu t1, t0, a0 # Is it KSEG2 address ?
+ beqz t1, mapped # No - already mapped !
+
+ move t0, a0
+ ori t0, 0xfff
+ xori t0, 0xfff # round address to page
+
+ ori t1, t0, 0xf00 # prepare EntryLo (N,V,D,G)
+
+ mfc0 t2, CP0_ENTRYHI # save ASID value
+ mtc0 zero, CP0_INDEX
+ mtc0 t0, CP0_ENTRYHI # Load MMU values ...
+ mtc0 t1, CP0_ENTRYLO0
+ nop # let it understand
+ nop
+ tlbwi # ... and write ones
+ nop
+ nop
+ mtc0 t2, CP0_ENTRYHI
+
+mapped:
+ la t0, exception_handlers
+ lw t1, DBE_HANDLER(t0) # save real handler
+ la t2, dbe_handler
+ sw t2, DBE_HANDLER(t0) # set temporary local handler
+ li v0, -1 # default (failure) value
+
+ li t2, 1
+ beq t2, a1, 1f
+ li t2, 2
+ beq t2, a1, 2f
+ li t2, 4
+ beq t2, a1, 4f
+ b out
+
+1: lbu v0, (a0) # byte
+ b out
+
+2: lhu v0, (a0) # short
+ b out
+
+4: lw v0, (a0) # word
+
+out:
+ sw t1, DBE_HANDLER(t0) # restore real handler
+ mtc0 t3, CP0_STATUS # restore CPU flags
+ jr ra
+
+dbe_handler:
+ li v0, -1 # mark our failure
+ .set push
+ .set noreorder
+ b out # "no problems !"
+ rfe # return from trap
+ .set pop
+END(try_read)
diff --git a/arch/mips/baget/balo.c b/arch/mips/baget/balo.c
new file mode 100644
index 000000000..819a2f9f1
--- /dev/null
+++ b/arch/mips/baget/balo.c
@@ -0,0 +1,190 @@
+/* $Id$
+ *
+ * balo.c: BAget LOader
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/system.h>
+#include <asm/ptrace.h>
+#include <asm/addrspace.h>
+
+#include <asm/baget/baget.h>
+
+#include "balo.h" /* Includes some kernel symbol values */
+
+static char *banner = "\nBaget Linux Loader v0.2\n";
+
+static void mem_move (long *to, long *from, long size)
+{
+ while (size > 0) {
+ *to++ = *from++;
+ size -= sizeof(long);
+ }
+}
+
+static volatile int *mem_limit = (volatile int*)KSEG1;
+static volatile int *mem_limit_dbe = (volatile int*)KSEG1;
+
+static int can_write (volatile int* p) {
+ return p < (int*)(KSEG1+BALO_OFFSET) ||
+ p >= (int*)(KSEG1+BALO_OFFSET+BALO_SIZE);
+}
+
+static volatile enum balo_state_enum {
+ BALO_INIT,
+ MEM_INIT,
+ MEM_PROBE,
+ START_KERNEL
+} balo_state = BALO_INIT;
+
+
+static __inline__ void reset_and_jump(int start, int mem_upper)
+{
+ __asm__ __volatile__(
+ ".set\tnoreorder\n\t"
+ ".set\tnoat\n\t"
+ "mfc0\t$1,$12\n\t"
+ "nop\n\t"
+ "nop\n\t"
+ "nop\n\t"
+ "ori\t$1,$1,0xff00\n\t"
+ "xori\t$1,$1,0xff00\n\t"
+ "mtc0\t$1,$12\n\t"
+ "nop\n\t"
+ "nop\n\t"
+ "nop\n\t"
+ "move\t$4,%1\n\t"
+ "jr\t%0\n\t"
+ "nop\n\t"
+ ".set\tat\n\t"
+ ".set\treorder"
+ : /* no outputs */
+ :"Ir" (start), "Ir" (mem_upper)
+ :"$1", "$4", "memory");
+}
+
+static void start_kernel(void)
+{
+ extern char _vmlinux_start, _vmlinux_end;
+ extern char _ramdisk_start, _ramdisk_end;
+
+ outs( "Relocating Linux... " );
+ mem_move((long*)KSEG0, (long*)&_vmlinux_start,
+ &_vmlinux_end-&_vmlinux_start);
+ outs("done.\n");
+
+ if (&_ramdisk_start != &_ramdisk_end) {
+ outs("Setting up RAMDISK... ");
+ if (*(unsigned long*)RAMDISK_BASE != 0xBA) {
+ outs("Bad RAMDISK_BASE signature in system image.\n");
+ balo_hungup();
+ }
+ *(unsigned long*)RAMDISK_BASE = (unsigned long)&_ramdisk_start;
+ *(unsigned long*)RAMDISK_SIZE = &_ramdisk_end -&_ramdisk_start;
+ outs("done.\n");
+ }
+
+ {
+ extern void flush_cache_low(int isize, int dsize);
+ flush_cache_low(256*1024,256*1024);
+ }
+
+ balo_printf( "Kernel entry: %x\n\n", START);
+ balo_state = START_KERNEL;
+ reset_and_jump(START, (int)mem_limit-KSEG1+KSEG0);
+}
+
+
+static void mem_probe(void)
+{
+ balo_state = MEM_PROBE;
+ outs("RAM: <");
+ while(mem_limit < mem_limit_dbe) {
+ if (can_write(mem_limit) && *mem_limit != 0)
+ break; /* cycle found */
+ outc('.');
+ if (can_write(mem_limit))
+ *mem_limit = -1; /* mark */
+ mem_limit += 0x40000;
+ }
+ outs(">\n");
+ start_kernel();
+}
+
+volatile unsigned int int_cause;
+volatile unsigned int epc;
+volatile unsigned int badvaddr;
+
+static void print_regs(void)
+{
+ balo_printf("CAUSE=%x EPC=%x BADVADDR=%x\n",
+ int_cause, epc, badvaddr);
+}
+
+void int_handler(struct pt_regs *regs)
+{
+ switch (balo_state) {
+ case BALO_INIT:
+ balo_printf("\nBALO: trap in balo itself.\n");
+ print_regs();
+ balo_hungup();
+ break;
+ case MEM_INIT:
+ if ((int_cause & CAUSE_MASK) != CAUSE_DBE) {
+ balo_printf("\nBALO: unexpected trap during memory init.\n");
+ print_regs();
+ balo_hungup();
+ } else {
+ mem_probe();
+ }
+ break;
+ case MEM_PROBE:
+ balo_printf("\nBALO: unexpected trap during memory probe.\n");
+ print_regs();
+ balo_hungup();
+ break;
+ case START_KERNEL:
+ balo_printf("\nBALO: unexpected kernel trap.\n");
+ print_regs();
+ balo_hungup();
+ break;
+ }
+ balo_printf("\nBALO: unexpected return from handler.\n");
+ print_regs();
+ balo_hungup();
+}
+
+static void mem_init(void)
+{
+ balo_state = MEM_INIT;
+
+ while(1) {
+ *mem_limit_dbe;
+ if (can_write(mem_limit_dbe))
+ *mem_limit_dbe = 0;
+
+ mem_limit_dbe += 0x40000; /* +1M */
+ }
+ /* no return: must go to int_handler */
+}
+
+void balo_entry(void)
+{
+ extern void except_vec3_generic(void);
+
+ cli();
+ outs(banner);
+ memcpy((void *)(KSEG0 + 0x80), &except_vec3_generic, 0x80);
+ mem_init();
+}
+
+/* Needed for linking */
+
+int vsprintf(char *buf, const char *fmt, va_list arg)
+{
+ outs("BALO: vsprintf called.\n");
+ balo_hungup();
+ return 0;
+}
diff --git a/arch/mips/baget/balo_supp.S b/arch/mips/baget/balo_supp.S
new file mode 100644
index 000000000..6b79d22d3
--- /dev/null
+++ b/arch/mips/baget/balo_supp.S
@@ -0,0 +1,144 @@
+/* $Id$
+ * balo_supp.S: BAget Loader supplement
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ */
+
+#include <linux/config.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+
+ .text
+ .set mips1
+
+ /* General exception vector. */
+NESTED(except_vec3_generic, 0, sp)
+ .set noat
+ la k0, except_vec3_generic_code
+ jr k0
+END(except_vec3_generic)
+
+NESTED(except_vec3_generic_code, 0, sp)
+ SAVE_ALL
+ mfc0 k1, CP0_CAUSE
+ la k0, int_cause
+ sw k1, (k0)
+
+ mfc0 k1, CP0_EPC
+ la k0, epc
+ sw k1, (k0)
+
+ mfc0 k1, CP0_BADVADDR
+ la k0, badvaddr
+ sw k1, (k0)
+
+ la k0, int_handler
+ .set noreorder
+ jal k0
+ .set reorder
+ move a0, sp
+
+ RESTORE_ALL_AND_RET
+END(except_vec3_generic_code)
+
+ .align 5
+NESTED(flush_cache_low, PT_SIZE, sp)
+ .set at
+ .set macro
+ .set noreorder
+
+ move t1, a0 # ISIZE
+ move t2, a1 # DSIZE
+
+ mfc0 t3, CP0_STATUS # Save the status register.
+ mtc0 zero, CP0_STATUS # Disable interrupts.
+ la v0, 1f
+ or v0, KSEG1 # Run uncached.
+ j v0
+ nop
+/*
+ * Flush the instruction cache.
+ */
+1:
+ li v0, ST0_DE | ST0_CE
+ mtc0 v0, CP0_STATUS # Isolate and swap caches.
+ li t0, KSEG1
+ subu t0, t0, t1
+ li t1, KSEG1
+ la v0, 1f # Run cached
+ j v0
+ nop
+1:
+ addu t0, t0, 64
+ sb zero, -64(t0)
+ sb zero, -60(t0)
+ sb zero, -56(t0)
+ sb zero, -52(t0)
+ sb zero, -48(t0)
+ sb zero, -44(t0)
+ sb zero, -40(t0)
+ sb zero, -36(t0)
+ sb zero, -32(t0)
+ sb zero, -28(t0)
+ sb zero, -24(t0)
+ sb zero, -20(t0)
+ sb zero, -16(t0)
+ sb zero, -12(t0)
+ sb zero, -8(t0)
+ bne t0, t1, 1b
+ sb zero, -4(t0)
+
+ la v0, 1f
+ or v0, KSEG1
+ j v0 # Run uncached
+ nop
+/*
+ * Flush the data cache.
+ */
+1:
+ li v0, ST0_DE
+ mtc0 v0, CP0_STATUS # Isolate and swap back caches
+ li t0, KSEG1
+ subu t0, t0, t2
+ la v0, 1f
+ j v0 # Back to cached mode
+ nop
+1:
+ addu t0, t0, 64
+ sb zero, -64(t0)
+ sb zero, -60(t0)
+ sb zero, -56(t0)
+ sb zero, -52(t0)
+ sb zero, -48(t0)
+ sb zero, -44(t0)
+ sb zero, -40(t0)
+ sb zero, -36(t0)
+ sb zero, -32(t0)
+ sb zero, -28(t0)
+ sb zero, -24(t0)
+ sb zero, -20(t0)
+ sb zero, -16(t0)
+ sb zero, -12(t0)
+ sb zero, -8(t0)
+ bne t0, t1, 1b
+ sb zero, -4(t0)
+
+ nop # Insure isolated stores
+ nop # out of pipe.
+ nop
+ nop
+ mtc0 t3, CP0_STATUS # Restore status reg.
+ nop # Insure cache unisolated.
+ nop
+ nop
+ nop
+ j ra
+ nop
+END(flush_cache_low)
+
+/* To satisfy macros only */
+EXPORT(kernelsp)
+ PTR 0x80001000
diff --git a/arch/mips/baget/irq.c b/arch/mips/baget/irq.c
new file mode 100644
index 000000000..a6513d7f1
--- /dev/null
+++ b/arch/mips/baget/irq.c
@@ -0,0 +1,436 @@
+/*
+ * Code to handle Baget/MIPS IRQs plus some generic interrupt stuff.
+ *
+ * Copyright (C) 1998 Vladimir Roganov & Gleb Raiko
+ * Code (mostly sleleton and comments) derived from DECstation IRQ
+ * handling.
+ *
+ * $Id$
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/timex.h>
+#include <linux/malloc.h>
+#include <linux/random.h>
+#include <linux/delay.h>
+
+#include <asm/bitops.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+
+#include <asm/baget/baget.h>
+
+unsigned int local_bh_count[NR_CPUS];
+unsigned int local_irq_count[NR_CPUS];
+unsigned long spurious_count = 0;
+
+/*
+ * This table is a correspondence between IRQ numbers and CPU PILs
+ */
+
+static int irq_to_pil_map[BAGET_IRQ_NR] = {
+ 7/*fixme: dma_err -1*/,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* 0x00 - 0x0f */
+ -1,-1,-1,-1, 3,-1,-1,-1, 2, 2, 2,-1, 3,-1,-1,3/*fixme: lance*/, /* 0x10 - 0x1f */
+ -1,-1,-1,-1,-1,-1, 5,-1,-1,-1,-1,-1, 7,-1,-1,-1, /* 0x20 - 0x2f */
+ -1, 3, 2/*fixme systimer:3*/, 3, 3, 3, 2,-1, 3, 3, 3, 3, 3, 3, 3, 3 /* 0x30 - 0x3f */
+};
+
+static inline int irq_to_pil(int irq_nr)
+{
+ int pil = -1;
+
+ if (irq_nr >= BAGET_IRQ_NR)
+ baget_printk("irq_to_pil: too large irq_nr = 0x%x\n", irq_nr);
+ else {
+ pil = irq_to_pil_map[irq_nr];
+ if (pil == -1)
+ baget_printk("irq_to_pil: unknown irq = 0x%x\n", irq_nr);
+ }
+
+ return pil;
+}
+
+/* Function for careful CP0 interrupt mask access */
+
+static inline modify_cp0_intmask(unsigned clr_mask, unsigned set_mask)
+{
+ unsigned long status = read_32bit_cp0_register(CP0_STATUS);
+ status &= ~((clr_mask & 0xFF) << 8);
+ status |= (set_mask & 0xFF) << 8;
+ write_32bit_cp0_register(CP0_STATUS, status);
+}
+
+/*
+ * These two functions may be used for unconditional IRQ
+ * masking via their PIL protection.
+ */
+
+static inline void mask_irq(unsigned int irq_nr)
+{
+ modify_cp0_intmask(irq_to_pil(irq_nr), 0);
+}
+
+static inline void unmask_irq(unsigned int irq_nr)
+{
+ modify_cp0_intmask(0, irq_to_pil(irq_nr));
+}
+
+/*
+ * The following section is introduced for masking/unasking IRQ
+ * only while no more IRQs uses same CPU PIL.
+ *
+ * These functions are used in request_irq, free_irq, but it looks
+ * they cannot change something: CP0_STATUS is private for any
+ * process, and their action is invisible for system.
+ */
+
+static volatile unsigned int pil_in_use[BAGET_PIL_NR] = { 0, };
+
+void mask_irq_count(int irq_nr)
+{
+ unsigned long flags;
+ int pil = irq_to_pil(irq_nr);
+
+ save_and_cli(flags);
+ if (!--pil_in_use[pil])
+ mask_irq(irq_nr);
+ restore_flags(flags);
+}
+
+void unmask_irq_count(int irq_nr)
+{
+ unsigned long flags;
+ int pil = irq_to_pil(irq_nr);
+
+ save_and_cli(flags);
+ if (!pil_in_use[pil]++)
+ unmask_irq(irq_nr);
+ restore_flags(flags);
+}
+
+/*
+ * Two functions below are exported versions of mask/unmask IRQ
+ */
+
+void disable_irq(unsigned int irq_nr)
+{
+ unsigned long flags;
+
+ save_and_cli(flags);
+ mask_irq(irq_nr);
+ restore_flags(flags);
+}
+
+void enable_irq(unsigned int irq_nr)
+{
+ unsigned long flags;
+
+ save_and_cli(flags);
+ unmask_irq(irq_nr);
+ restore_flags(flags);
+}
+
+/*
+ * Data definition for static irqaction allocation.
+ * It is used while SLAB module is not initialized.
+ */
+
+#define MAX_STATIC_ALLOC 4
+struct irqaction static_irqaction[MAX_STATIC_ALLOC];
+int static_irq_count = 0;
+
+/*
+ * Pointers to the low-level handlers: first the general ones, then the
+ * fast ones, then the bad ones.
+ */
+static struct irqaction *irq_action[BAGET_IRQ_NR] = { NULL, };
+
+int get_irq_list(char *buf)
+{
+ int i, len = 0;
+ struct irqaction * action;
+
+ for (i = 0 ; i < BAGET_IRQ_NR ; i++) {
+ action = irq_action[i];
+ if (!action)
+ continue;
+ len += sprintf(buf+len, "%2d: %8d %c %s",
+ i, kstat.irqs[0][i],
+ (action->flags & SA_INTERRUPT) ? '+' : ' ',
+ action->name);
+ for (action=action->next; action; action = action->next) {
+ len += sprintf(buf+len, ",%s %s",
+ (action->flags & SA_INTERRUPT) ? " +" : "",
+ action->name);
+ }
+ len += sprintf(buf+len, "\n");
+ }
+ return len;
+}
+
+
+/*
+ * do_IRQ handles IRQ's that have been installed without the
+ * SA_INTERRUPT flag: it uses the full signal-handling return
+ * and runs with other interrupts enabled. All relatively slow
+ * IRQ's should use this format: notably the keyboard/timer
+ * routines.
+ */
+static void do_IRQ(int irq, struct pt_regs * regs)
+{
+ struct irqaction *action;
+ int do_random, cpu;
+
+ cpu = smp_processor_id();
+ irq_enter(cpu, irq);
+ kstat.irqs[cpu][irq]++;
+
+ mask_irq(irq);
+ action = *(irq + irq_action);
+ if (action) {
+ if (!(action->flags & SA_INTERRUPT))
+ __sti();
+ action = *(irq + irq_action);
+ do_random = 0;
+ do {
+ do_random |= action->flags;
+ action->handler(irq, action->dev_id, regs);
+ action = action->next;
+ } while (action);
+ if (do_random & SA_SAMPLE_RANDOM)
+ add_interrupt_randomness(irq);
+ __cli();
+ } else {
+ printk("do_IRQ: Unregistered IRQ (0x%X) occured\n", irq);
+ }
+ unmask_irq(irq);
+ irq_exit(cpu, irq);
+
+ /* unmasking and bottom half handling is done magically for us. */
+}
+
+/*
+ * What to do in case of 'no VIC register available' for current interrupt
+ */
+static void vic_reg_error(unsigned long address, unsigned char active_pils)
+{
+ printk("\nNo VIC register found: reg=%08lx active_pils=%02x\n"
+ "Current interrupt mask from CP0_CAUSE: %02x\n",
+ address, 0xff & active_pils,
+ 0xff & (read_32bit_cp0_register(CP0_CAUSE)>>8));
+ { int i; for (i=0; i<10000; i++) udelay(1000); }
+}
+
+static char baget_fpu_irq = BAGET_FPU_IRQ;
+#define BAGET_INT_FPU {(unsigned long)&baget_fpu_irq, 1}
+
+/*
+ * Main interrupt handler: interrupt demultiplexer
+ */
+asmlinkage void baget_interrupt(struct pt_regs *regs)
+{
+ static struct baget_int_reg int_reg[BAGET_PIL_NR] = {
+ BAGET_INT_NONE, BAGET_INT_NONE, BAGET_INT0_ACK, BAGET_INT1_ACK,
+ BAGET_INT_NONE, BAGET_INT_FPU, BAGET_INT_NONE, BAGET_INT5_ACK
+ };
+ unsigned char active_pils;
+ while ((active_pils = read_32bit_cp0_register(CP0_CAUSE)>>8)) {
+ int pil;
+ struct baget_int_reg* reg;
+
+ for (pil = 0; pil < BAGET_PIL_NR; pil++) {
+ if (!(active_pils & (1<<pil))) continue;
+
+ reg = &int_reg[pil];
+
+ if (reg->address) {
+ extern int try_read(unsigned long,int);
+ int irq = try_read(reg->address, reg->size);
+
+ if (irq != -1)
+ do_IRQ(BAGET_IRQ_MASK(irq), regs);
+ else
+ vic_reg_error(reg->address, active_pils);
+ } else {
+ printk("baget_interrupt: unknown interrupt "
+ "(pil = %d)\n", pil);
+ }
+ }
+ }
+}
+
+/*
+ * Idea is to put all interrupts
+ * in a single table and differenciate them just by number.
+ */
+int setup_baget_irq(int irq, struct irqaction * new)
+{
+ int shared = 0;
+ struct irqaction *old, **p;
+ unsigned long flags;
+
+ p = irq_action + irq;
+ if ((old = *p) != NULL) {
+ /* Can't share interrupts unless both agree to */
+ if (!(old->flags & new->flags & SA_SHIRQ))
+ return -EBUSY;
+
+ /* Can't share interrupts unless both are same type */
+ if ((old->flags ^ new->flags) & SA_INTERRUPT)
+ return -EBUSY;
+
+ /* add new interrupt at end of irq queue */
+ do {
+ p = &old->next;
+ old = *p;
+ } while (old);
+ shared = 1;
+ }
+
+ if (new->flags & SA_SAMPLE_RANDOM)
+ rand_initialize_irq(irq);
+
+ save_and_cli(flags);
+ *p = new;
+ restore_flags(flags);
+
+ if (!shared) {
+ unmask_irq_count(irq);
+ }
+
+ return 0;
+}
+
+int request_irq(unsigned int irq,
+ void (*handler)(int, void *, struct pt_regs *),
+ unsigned long irqflags,
+ const char * devname,
+ void *dev_id)
+{
+ int retval;
+ struct irqaction * action = NULL;
+
+ if (irq >= BAGET_IRQ_NR)
+ return -EINVAL;
+ if (!handler)
+ return -EINVAL;
+ if (irq_to_pil_map[irq] < 0)
+ return -EINVAL;
+
+ if (irqflags & SA_STATIC_ALLOC) {
+ unsigned long flags;
+
+ save_and_cli(flags);
+ if (static_irq_count < MAX_STATIC_ALLOC)
+ action = &static_irqaction[static_irq_count++];
+ else
+ printk("Request for IRQ%d (%s) SA_STATIC_ALLOC failed "
+ "using kmalloc\n", irq, devname);
+ restore_flags(flags);
+ }
+
+ if (action == NULL)
+ action = (struct irqaction *)
+ kmalloc(sizeof(struct irqaction), GFP_KERNEL);
+
+ if (!action)
+ return -ENOMEM;
+
+ action->handler = handler;
+ action->flags = irqflags;
+ action->mask = 0;
+ action->name = devname;
+ action->next = NULL;
+ action->dev_id = dev_id;
+
+ retval = setup_baget_irq(irq, action);
+
+ if (retval)
+ kfree(action);
+
+ return retval;
+}
+
+void free_irq(unsigned int irq, void *dev_id)
+{
+ struct irqaction * action, **p;
+ unsigned long flags;
+
+ if (irq >= BAGET_IRQ_NR)
+ printk("Trying to free IRQ%d\n",irq);
+
+ for (p = irq + irq_action; (action = *p) != NULL; p = &action->next) {
+ if (action->dev_id != dev_id)
+ continue;
+
+ /* Found it - now free it */
+ save_and_cli(flags);
+ *p = action->next;
+ if (!irq[irq_action])
+ unmask_irq_count(irq);
+ restore_flags(flags);
+
+ if (action->flags & SA_STATIC_ALLOC)
+ {
+ /* This interrupt is marked as specially allocated
+ * so it is a bad idea to free it.
+ */
+ printk("Attempt to free statically allocated "
+ "IRQ%d (%s)\n", irq, action->name);
+ return;
+ }
+
+ kfree(action);
+ return;
+ }
+ printk("Trying to free free IRQ%d\n",irq);
+}
+
+static int baget_irq_canonicalize(int irq)
+{
+ return irq;
+}
+
+int (*irq_cannonicalize)(int irq) = baget_irq_canonicalize;
+
+unsigned long probe_irq_on (void)
+{
+ /* TODO */
+ return 0;
+}
+
+int probe_irq_off (unsigned long irqs)
+{
+ /* TODO */
+ return 0;
+}
+
+
+static void write_err_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ *(volatile char*) BAGET_WRERR_ACK = 0;
+}
+
+__initfunc(void init_IRQ(void))
+{
+ irq_setup();
+
+ /* Enable access to VIC interrupt registers */
+ vac_outw(0xacef | 0x8200, VAC_PIO_FUNC);
+
+ /* Enable interrupts for pils 2 and 3 (lines 0 and 1) */
+ modify_cp0_intmask(0, (1<<2)|(1<<3));
+
+ if (request_irq(0/*fixme*/, write_err_interrupt,
+ SA_INTERRUPT|SA_STATIC_ALLOC, "write_err", NULL) < 0)
+ printk("init_IRQ: unable to register write_err irq\n");
+}
diff --git a/arch/mips/baget/ld.script.balo b/arch/mips/baget/ld.script.balo
new file mode 100644
index 000000000..e6fd192db
--- /dev/null
+++ b/arch/mips/baget/ld.script.balo
@@ -0,0 +1,124 @@
+OUTPUT_FORMAT("elf32-bigmips")
+OUTPUT_ARCH(mips)
+ENTRY(balo_entry)
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = 0x80400000;
+ .rel.text : { *(.rel.text) }
+ .rela.text : { *(.rela.text) }
+ .rel.data : { *(.rel.data) }
+ .rela.data : { *(.rela.data) }
+ .rel.rodata : { *(.rel.rodata) }
+ .rela.rodata : { *(.rela.rodata) }
+ .rel.got : { *(.rel.got) }
+ .rela.got : { *(.rela.got) }
+ .rel.ctors : { *(.rel.ctors) }
+ .rela.ctors : { *(.rela.ctors) }
+ .rel.dtors : { *(.rel.dtors) }
+ .rela.dtors : { *(.rela.dtors) }
+ .rel.init : { *(.rel.init) }
+ .rela.init : { *(.rela.init) }
+ .rel.fini : { *(.rel.fini) }
+ .rela.fini : { *(.rela.fini) }
+ .rel.bss : { *(.rel.bss) }
+ .rela.bss : { *(.rela.bss) }
+ .rel.plt : { *(.rel.plt) }
+ .rela.plt : { *(.rela.plt) }
+ .init : { *(.init) } =0
+ .text :
+ {
+ _ftext = . ;
+ *(.text)
+ *(.rodata)
+ *(.rodata1)
+ /* .gnu.warning sections are handled specially by elf32.em. */
+ *(.gnu.warning)
+
+ _etext = .;
+ PROVIDE (etext = .);
+
+ /* Startup code */
+ . = ALIGN(4096);
+ __init_begin = .;
+ *(.text.init)
+ *(.data.init)
+ . = ALIGN(4096); /* Align double page for init_task_union */
+ __init_end = .;
+
+ *(.fini)
+ *(.reginfo)
+ /* Adjust the address for the data segment. We want to adjust up to
+ the same address within the page on the next page up. It would
+ be more correct to do this:
+ . = .;
+ The current expression does not correctly handle the case of a
+ text segment ending precisely at the end of a page; it causes the
+ data segment to skip a page. The above expression does not have
+ this problem, but it will currently (2/95) cause BFD to allocate
+ a single segment, combining both text and data, for this case.
+ This will prevent the text segment from being shared among
+ multiple executions of the program; I think that is more
+ important than losing a page of the virtual address space (note
+ that no actual memory is lost; the page which is skipped can not
+ be referenced). */
+ . = .;
+ _fdata = . ;
+ *(.data)
+ CONSTRUCTORS
+
+ *(.data1)
+ _gp = . + 0x8000;
+ *(.lit8)
+ *(.lit4)
+ *(.ctors)
+ *(.dtors)
+ *(.got.plt) *(.got)
+ *(.dynamic)
+ /* We want the small data sections together, so single-instruction offsets
+ can access them all, and initialized data all before uninitialized, so
+ we can shorten the on-disk segment size. */
+ *(.sdata)
+ _edata = .;
+ PROVIDE (edata = .);
+
+ __bss_start = .;
+ _fbss = .;
+
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ _end = . ;
+ PROVIDE (end = .);
+ *(.sbss)
+ *(.scommon)
+
+ /* These are needed for ELF backends which have not yet been
+ converted to the new style linker. */
+ *(.stab)
+ *(.stabstr)
+ /* DWARF debug sections.
+ Symbols in the .debug DWARF section are relative to the beginning of the
+ section so we begin .debug at 0. It's not clear yet what needs to happen
+ for the others. */
+ *(.debug)
+ *(.debug_srcinfo)
+ *(.debug_aranges)
+ *(.debug_pubnames)
+ *(.debug_sfnames)
+ *(.line)
+ /* These must appear regardless of . */
+ *(.gptab.data) *(.gptab.sdata)
+ *(.gptab.bss) *(.gptab.sbss)
+
+ _vmlinux_start = .;
+ *(.vmlinux)
+ _vmlinux_end = .;
+
+ _ramdisk_start = .;
+ *(.ramdisk)
+ _ramdisk_end = .;
+
+} =0
+
+}
diff --git a/arch/mips/baget/print.c b/arch/mips/baget/print.c
new file mode 100644
index 000000000..68511c20e
--- /dev/null
+++ b/arch/mips/baget/print.c
@@ -0,0 +1,118 @@
+/* $Id$
+ *
+ * print.c: Simple print fascility
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ *
+ */
+#include <stdarg.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/baget/baget.h>
+
+/*
+ * Define this to see 'baget_printk' (debug) messages
+ */
+// #define BAGET_PRINTK
+
+/*
+ * This function is same for BALO and Linux baget_printk,
+ * and normally prints characted to second (UART A) console.
+ */
+
+static void delay(void) {}
+
+static void outc_low(char c)
+{
+ int i;
+ vac_outb(c, VAC_UART_B_TX);
+ for (i=0; i<10000; i++)
+ delay();
+}
+
+void outc(char c)
+{
+ if (c == '\n')
+ outc_low('\r');
+ outc_low(c);
+}
+
+void outs(char *s)
+{
+ while(*s) outc(*s++);
+}
+
+void baget_write(char *s, int l)
+{
+ while(l--)
+ outc(*s++);
+}
+
+int baget_printk(const char *fmt, ...)
+{
+#ifdef BAGET_PRINTK
+ va_list args;
+ int i;
+ static char buf[1024];
+
+ va_start(args, fmt);
+ i = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf)-4 */
+ va_end(args);
+ baget_write(buf, i);
+ return i;
+#else
+ return 0;
+#endif
+}
+
+static __inline__ void puthex( int a )
+{
+ static char s[9];
+ static char e[] = "0123456789ABCDEF";
+ int i;
+ for( i = 7; i >= 0; i--, a >>= 4 ) s[i] = e[a & 0x0F];
+ s[8] = '\0';
+ outs( s );
+}
+
+__initfunc(void balo_printf( char *f, ... ))
+{
+ int *arg = (int*)&f + 1;
+ char c;
+ int format = 0;
+
+ while((c = *f++) != 0) {
+ switch(c) {
+ default:
+ if(format) {
+ outc('%');
+ format = 0;
+ }
+ outc( c );
+ break;
+ case '%':
+ if( format ){
+ format = 0;
+ outc(c);
+ } else format = 1;
+ break;
+ case 'x':
+ if(format) puthex( *arg++ );
+ else outc(c);
+ format = 0;
+ break;
+ case 's':
+ if( format ) outs((char *)*arg++);
+ else outc(c);
+ format = 0;
+ break;
+ }
+ }
+}
+
+__initfunc(void balo_hungup(void))
+{
+ outs("Hunging up.\n");
+ while(1);
+}
diff --git a/arch/mips/baget/prom/Makefile b/arch/mips/baget/prom/Makefile
new file mode 100644
index 000000000..a98779f0e
--- /dev/null
+++ b/arch/mips/baget/prom/Makefile
@@ -0,0 +1,15 @@
+# $Id$
+# Makefile for the Baget/MIPS prom emulator library routines.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are now in the main makefile...
+
+O_TARGET := bagetlib.a
+O_OBJS := init.o
+
+all: $(O_TARGET)
+
+include $(TOPDIR)/Rules.make
diff --git a/arch/mips/baget/prom/init.c b/arch/mips/baget/prom/init.c
new file mode 100644
index 000000000..e5c100dea
--- /dev/null
+++ b/arch/mips/baget/prom/init.c
@@ -0,0 +1,21 @@
+/*
+ * init.c: PROM library initialisation code.
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ *
+ * $Id$
+ */
+#include <linux/init.h>
+#include <linux/config.h>
+#include <asm/bootinfo.h>
+
+char arcs_cmdline[CL_SIZE];
+
+__initfunc(int prom_init(unsigned int mem_upper))
+{
+ mips_memory_upper = mem_upper;
+ mips_machgroup = MACH_GROUP_UNKNOWN;
+ mips_machtype = MACH_UNKNOWN;
+ arcs_cmdline[0] = 0;
+ return 0;
+}
diff --git a/arch/mips/baget/reset.c b/arch/mips/baget/reset.c
new file mode 100644
index 000000000..e932ba28b
--- /dev/null
+++ b/arch/mips/baget/reset.c
@@ -0,0 +1,32 @@
+#include <linux/kernel.h>
+#include <asm/system.h>
+#include <asm/baget/baget.h>
+
+
+#define R3000_RESET_VEC 0xbfc00000
+typedef void vector(void);
+
+
+static void baget_reboot(char *from_fun)
+{
+ cli();
+ baget_printk("\n%s: jumping to RESET code...\n", from_fun);
+ (*(vector*)R3000_RESET_VEC)();
+}
+
+/* fixme: proper functionality */
+
+void baget_machine_restart(char *command)
+{
+ baget_reboot("restart");
+}
+
+void baget_machine_halt(void)
+{
+ baget_reboot("halt");
+}
+
+void baget_machine_power_off(void)
+{
+ baget_reboot("power off");
+}
diff --git a/arch/mips/baget/setup.c b/arch/mips/baget/setup.c
new file mode 100644
index 000000000..209816dca
--- /dev/null
+++ b/arch/mips/baget/setup.c
@@ -0,0 +1,491 @@
+/* $Id$
+ *
+ * setup.c: Baget/MIPS specific setup, including init of the feature struct.
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ *
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <asm/irq.h>
+#include <asm/addrspace.h>
+#include <asm/reboot.h>
+
+#include <asm/baget/baget.h>
+
+extern long mips_memory_upper;
+
+#define CACHEABLE_STR(val) ((val) ? "not cached" : "cached")
+#define MIN(a,b) (((a)<(b)) ? (a):(b))
+
+__initfunc(static void vac_show(void))
+{
+ int i;
+ unsigned short val, decode = vac_inw(VAC_DECODE_CTRL);
+ unsigned short a24_base = vac_inw(VAC_A24_BASE);
+ unsigned long a24_addr = ((unsigned long)
+ (a24_base & VAC_A24_MASK)) << 16;
+ char *decode_mode[] = { "eprom", "vsb", "shared", "dram" };
+ char *address_mode[] = { "", ", A16", ", A32/A24", ", A32/A24/A16" };
+ char *state[] = { "", " on write", " on read", " on read/write", };
+ char *region_mode[] = { "inactive", "shared", "vsb", "vme" };
+ char *asiz[] = { "user", "A32", "A16", "A24" };
+ unsigned short regs[] = { VAC_REG1, VAC_REG2, VAC_REG3 };
+ unsigned short bndr[] = { VAC_DRAM_MASK,VAC_BNDR2,VAC_BNDR3 };
+ unsigned short io_sels[] = { VAC_IOSEL0_CTRL,
+ VAC_IOSEL1_CTRL,
+ VAC_IOSEL2_CTRL,
+ VAC_IOSEL3_CTRL,
+ VAC_IOSEL4_CTRL,
+ VAC_IOSEL5_CTRL };
+
+ printk("[DSACKi %s, DRAMCS%s qualified, boundary%s qualified%s]\n",
+ (decode & VAC_DECODE_DSACKI) ? "on" : "off",
+ (decode & VAC_DECODE_QFY_DRAMCS) ? "" : " not",
+ (decode & VAC_DECODE_QFY_BNDR) ? "" : " not",
+ (decode & VAC_DECODE_FPUCS) ? ", fpu" : "");
+
+ printk("slave0 ");
+ if (decode & VAC_DECODE_RDR_SLSEL0)
+ printk("at %08lx (%d MB)\t[dram %s]\n",
+ ((unsigned long)vac_inw(VAC_SLSEL0_BASE))<<16,
+ ((0xffff ^ vac_inw(VAC_SLSEL0_MASK)) + 1) >> 4,
+ (decode & VAC_DECODE_QFY_SLSEL0) ? "qualified" : "");
+ else
+ printk("off\n");
+
+ printk("slave1 ");
+ if (decode & VAC_DECODE_RDR_SLSEL1)
+ printk("at %08lx (%d MB)\t[%s%s, %s]\n",
+ ((unsigned long)vac_inw(VAC_SLSEL1_BASE))<<16,
+ ((0xffff ^ vac_inw(VAC_SLSEL1_MASK)) + 1) >> 4,
+ decode_mode[VAC_DECODE_MODE_VAL(decode)],
+ address_mode[VAC_DECODE_CMP_SLSEL1_VAL(decode)],
+ (decode & VAC_DECODE_QFY_SLSEL1) ? "qualified" : "");
+ else
+ printk("off\n");
+
+ printk("icf global at %04x, module at %04x [%s]\n",
+ ((unsigned int)
+ VAC_ICFSEL_GLOBAL_VAL(vac_inw(VAC_ICFSEL_BASE)))<<4,
+ ((unsigned int)
+ VAC_ICFSEL_MODULE_VAL(vac_inw(VAC_ICFSEL_BASE)))<<4,
+ (decode & VAC_DECODE_QFY_ICFSEL) ? "qualified" : "");
+
+
+ printk("region0 at 00000000 (%dMB)\t[dram, %s, delay %d cpuclk"
+ ", cached]\n",
+ (vac_inw(VAC_DRAM_MASK)+1)>>4,
+ (decode & VAC_DECODE_DSACK) ? "D32" : "3state",
+ VAC_DECODE_CPUCLK_VAL(decode));
+
+ for (i = 0; i < sizeof(regs)/sizeof(regs[0]); i++) {
+ unsigned long from =
+ ((unsigned long)vac_inw(bndr[i]))<<16;
+ unsigned long to =
+ ((unsigned long)
+ ((i+1 == sizeof(bndr)/sizeof(bndr[0])) ?
+ 0xff00 : vac_inw(bndr[i+1])))<<16;
+
+
+ val = vac_inw(regs[i]);
+ printk("region%d at %08lx (%dMB)\t[%s %s/%s, %s]\n",
+ i+1,
+ from,
+ (unsigned int)((to - from) >> 20),
+ region_mode[VAC_REG_MODE(val)],
+ asiz[VAC_REG_ASIZ_VAL(val)],
+ ((val & VAC_REG_WORD) ? "D16" : "D32"),
+ CACHEABLE_STR(val&VAC_A24_A24_CACHINH));
+
+ if (a24_addr >= from && a24_addr < to)
+ printk("\ta24 at %08lx (%dMB)\t[vme, A24/%s, %s]\n",
+ a24_addr,
+ MIN((unsigned int)(a24_addr - from)>>20, 32),
+ (a24_base & VAC_A24_DATAPATH) ? "user" :
+ ((a24_base & VAC_A24_D32_ENABLE) ?
+ "D32" : "D16"),
+ CACHEABLE_STR(a24_base & VAC_A24_A24_CACHINH));
+ }
+
+ printk("region4 at ff000000 (15MB)\t[eprom]\n");
+ val = vac_inw(VAC_EPROMCS_CTRL);
+ printk("\t[ack %d cpuclk%s, %s%srecovery %d cpuclk, "
+ "read %d%s, write %d%s, assert %d%s]\n",
+ VAC_CTRL_DELAY_DSACKI_VAL(val),
+ state[val & (VAC_CTRL_IORD|VAC_CTRL_IOWR)],
+ (val & VAC_CTRL_DSACK0) ? "dsack0*, " : "",
+ (val & VAC_CTRL_DSACK1) ? "dsack1*, " : "",
+ VAC_CTRL_RECOVERY_IOSELI_VAL(val),
+ VAC_CTRL_DELAY_IORD_VAL(val)/2,
+ (VAC_CTRL_DELAY_IORD_VAL(val)&1) ? ".5" : "",
+ VAC_CTRL_DELAY_IOWR_VAL(val)/2,
+ (VAC_CTRL_DELAY_IOWR_VAL(val)&1) ? ".5" : "",
+ VAC_CTRL_DELAY_IOSELI_VAL(val)/2,
+ (VAC_CTRL_DELAY_IOSELI_VAL(val)&1) ? ".5" : "");
+
+ printk("region5 at fff00000 (896KB)\t[local io, %s]\n",
+ CACHEABLE_STR(vac_inw(VAC_A24_BASE) & VAC_A24_IO_CACHINH));
+
+ for (i = 0; i < sizeof(io_sels)/sizeof(io_sels[0]); i++) {
+ val = vac_inw(io_sels[i]);
+ printk("\tio%d[ack %d cpuclk%s, %s%srecovery %d cpuclk, "
+ "\n\t read %d%s cpuclk, write %d%s cpuclk, "
+ "assert %d%s%s cpuclk]\n",
+ i,
+ VAC_CTRL_DELAY_DSACKI_VAL(val),
+ state[val & (VAC_CTRL_IORD|VAC_CTRL_IOWR)],
+ (val & VAC_CTRL_DSACK0) ? "dsack0*, " : "",
+ (val & VAC_CTRL_DSACK1) ? "dsack1*, " : "",
+ VAC_CTRL_RECOVERY_IOSELI_VAL(val),
+ VAC_CTRL_DELAY_IORD_VAL(val)/2,
+ (VAC_CTRL_DELAY_IORD_VAL(val)&1) ? ".5" : "",
+ VAC_CTRL_DELAY_IOWR_VAL(val)/2,
+ (VAC_CTRL_DELAY_IOWR_VAL(val)&1) ? ".5" : "",
+ VAC_CTRL_DELAY_IOSELI_VAL(val)/2,
+ (VAC_CTRL_DELAY_IOSELI_VAL(val)&1) ? ".5" : "",
+ (vac_inw(VAC_DEV_LOC) & VAC_DEV_LOC_IOSEL(i)) ?
+ ", id" : "");
+ }
+
+ printk("region6 at fffe0000 (128KB)\t[vme, A16/%s, "
+ "not cached]\n",
+ (a24_base & VAC_A24_A16D32_ENABLE) ?
+ ((a24_base & VAC_A24_A16D32) ? "D32" : "D16") : "user");
+
+ val = vac_inw(VAC_SHRCS_CTRL);
+ printk("shared[ack %d cpuclk%s, %s%srecovery %d cpuclk, "
+ "read %d%s, write %d%s, assert %d%s]\n",
+ VAC_CTRL_DELAY_DSACKI_VAL(val),
+ state[val & (VAC_CTRL_IORD|VAC_CTRL_IOWR)],
+ (val & VAC_CTRL_DSACK0) ? "dsack0*, " : "",
+ (val & VAC_CTRL_DSACK1) ? "dsack1*, " : "",
+ VAC_CTRL_RECOVERY_IOSELI_VAL(val),
+ VAC_CTRL_DELAY_IORD_VAL(val)/2,
+ (VAC_CTRL_DELAY_IORD_VAL(val)&1) ? ".5" : "",
+ VAC_CTRL_DELAY_IOWR_VAL(val)/2,
+ (VAC_CTRL_DELAY_IOWR_VAL(val)&1) ? ".5" : "",
+ VAC_CTRL_DELAY_IOSELI_VAL(val)/2,
+ (VAC_CTRL_DELAY_IOSELI_VAL(val)&1) ? ".5" : "");
+}
+
+__initfunc(static void vac_init(void))
+{
+ unsigned short mem_limit = ((mips_memory_upper-KSEG0) >> 16);
+
+ switch(vac_inw(VAC_ID)) {
+ case 0x1AC0:
+ printk("VAC068-F5: ");
+ break;
+ case 0x1AC1:
+ printk("VAC068A: ");
+ break;
+ default:
+ panic("Unknown VAC revision number");
+ }
+
+ vac_outw(mem_limit-1, VAC_DRAM_MASK);
+ vac_outw(mem_limit, VAC_BNDR2);
+ vac_outw(mem_limit, VAC_BNDR3);
+ vac_outw(((BAGET_A24M_BASE>>16)&~VAC_A24_D32_ENABLE)|VAC_A24_DATAPATH,
+ VAC_A24_BASE);
+ vac_outw(VAC_REG_INACTIVE|VAC_REG_ASIZ0,VAC_REG1);
+ vac_outw(VAC_REG_INACTIVE|VAC_REG_ASIZ0,VAC_REG2);
+ vac_outw(VAC_REG_MWB|VAC_REG_ASIZ1,VAC_REG3);
+ vac_outw(BAGET_A24S_BASE>>16,VAC_SLSEL0_BASE);
+ vac_outw(BAGET_A24S_MASK>>16,VAC_SLSEL0_MASK);
+ vac_outw(BAGET_A24S_BASE>>16,VAC_SLSEL1_BASE);
+ vac_outw(BAGET_A24S_MASK>>16,VAC_SLSEL1_MASK);
+ vac_outw(BAGET_GSW_BASE|BAGET_MSW_BASE(0),VAC_ICFSEL_BASE);
+ vac_outw(VAC_DECODE_FPUCS|
+ VAC_DECODE_CPUCLK(3)|
+ VAC_DECODE_RDR_SLSEL0|VAC_DECODE_RDR_SLSEL1|
+ VAC_DECODE_DSACK|
+ VAC_DECODE_QFY_BNDR|
+ VAC_DECODE_QFY_ICFSEL|
+ VAC_DECODE_QFY_SLSEL1|VAC_DECODE_QFY_SLSEL0|
+ VAC_DECODE_CMP_SLSEL1_HI|
+ VAC_DECODE_DRAMCS|
+ VAC_DECODE_QFY_DRAMCS|
+ VAC_DECODE_DSACKI,VAC_DECODE_CTRL);
+ vac_outw(VAC_PIO_FUNC_UART_A_TX|VAC_PIO_FUNC_UART_A_RX|
+ VAC_PIO_FUNC_UART_B_TX|VAC_PIO_FUNC_UART_B_RX|
+ VAC_PIO_FUNC_IOWR|
+ VAC_PIO_FUNC_IOSEL3|
+ VAC_PIO_FUNC_IRQ7|VAC_PIO_FUNC_IRQ10|VAC_PIO_FUNC_IRQ11|
+ VAC_PIO_FUNC_IOSEL2|
+ VAC_PIO_FUNC_FCIACK,VAC_PIO_FUNC);
+ vac_outw(VAC_PIO_DIR_FCIACK |
+ VAC_PIO_DIR_OUT(0) |
+ VAC_PIO_DIR_OUT(1) |
+ VAC_PIO_DIR_OUT(2) |
+ VAC_PIO_DIR_OUT(3) |
+ VAC_PIO_DIR_IN(4) |
+ VAC_PIO_DIR_OUT(5) |
+ VAC_PIO_DIR_OUT(6) |
+ VAC_PIO_DIR_OUT(7) |
+ VAC_PIO_DIR_OUT(8) |
+ VAC_PIO_DIR_IN(9) |
+ VAC_PIO_DIR_OUT(10)|
+ VAC_PIO_DIR_OUT(11)|
+ VAC_PIO_DIR_OUT(12)|
+ VAC_PIO_DIR_OUT(13),VAC_PIO_DIRECTION);
+ vac_outw(VAC_DEV_LOC_IOSEL(2),VAC_DEV_LOC);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(1)|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_SHRCS_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(1)|
+ VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_EPROMCS_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(2)|
+ VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL0_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(2)|
+ VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL1_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(2)|
+ VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL2_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(2)|
+ VAC_CTRL_DSACK0|VAC_CTRL_DSACK1|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL3_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(2)|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL4_CTRL);
+ vac_outw(VAC_CTRL_IOWR|
+ VAC_CTRL_DELAY_IOWR(3)|
+ VAC_CTRL_DELAY_IORD(3)|
+ VAC_CTRL_RECOVERY_IOSELI(2)|
+ VAC_CTRL_DELAY_DSACKI(8),VAC_IOSEL5_CTRL);
+
+ vac_show();
+}
+
+__initfunc(static void vac_start(void))
+{
+ vac_outw(0, VAC_ID);
+ vac_outw(VAC_INT_CTRL_TIMER_DISABLE|
+ VAC_INT_CTRL_UART_B_DISABLE|
+ VAC_INT_CTRL_UART_A_DISABLE|
+ VAC_INT_CTRL_MBOX_DISABLE|
+ VAC_INT_CTRL_PIO4_DISABLE|
+ VAC_INT_CTRL_PIO7_DISABLE|
+ VAC_INT_CTRL_PIO8_DISABLE|
+ VAC_INT_CTRL_PIO9_DISABLE,VAC_INT_CTRL);
+ vac_outw(VAC_INT_CTRL_TIMER_PIO10|
+ VAC_INT_CTRL_UART_B_PIO7|
+ VAC_INT_CTRL_UART_A_PIO7,VAC_INT_CTRL);
+ /*
+ * Set quadro speed for both UARTs.
+ * To do it we need use formulae from VIC/VAC manual,
+ * keeping in mind Baget's 50MHz frequency...
+ */
+ vac_outw((500000/(384*16))<<8,VAC_CPU_CLK_DIV);
+}
+
+__initfunc(static void vic_show(void))
+{
+ unsigned char val;
+ char *timeout[] = { "4", "16", "32", "64", "128", "256", "disabled" };
+ char *deadlock[] = { "[dedlk only]", "[dedlk only]",
+ "[dedlk], [halt w/ rmc], [lberr]",
+ "[dedlk], [halt w/o rmc], [lberr]" };
+
+ val = vic_inb(VIC_IFACE_CFG);
+ if (val & VIC_IFACE_CFG_VME)
+ printk("VMEbus controller ");
+ if (val & VIC_IFACE_CFG_TURBO)
+ printk("turbo ");
+ if (val & VIC_IFACE_CFG_MSTAB)
+ printk("metastability delay ");
+ printk("%s ",
+ deadlock[VIC_IFACE_CFG_DEADLOCK_VAL(val)]);
+
+
+ printk("interrupts: ");
+ val = vic_inb(VIC_ERR_INT);
+ if (!(val & VIC_ERR_INT_SYSFAIL))
+ printk("[sysfail]");
+ if (!(val & VIC_ERR_INT_TIMO))
+ printk("[timeout]");
+ if (!(val & VIC_ERR_INT_WRPOST))
+ printk("[write post]");
+ if (!(val & VIC_ERR_INT_ACFAIL))
+ printk("[acfail] ");
+ printk("\n");
+
+ printk("timeouts: ");
+ val = vic_inb(VIC_XFER_TIMO);
+ printk("local %s, vme %s ",
+ timeout[VIC_XFER_TIMO_LOCAL_PERIOD_VAL(val)],
+ timeout[VIC_XFER_TIMO_VME_PERIOD_VAL(val)]);
+ if (val & VIC_XFER_TIMO_VME)
+ printk("acquisition ");
+ if (val & VIC_XFER_TIMO_ARB)
+ printk("arbitration ");
+ printk("\n");
+
+ val = vic_inb(VIC_LOCAL_TIM);
+ printk("pas time: (%d,%d), ds time: %d\n",
+ VIC_LOCAL_TIM_PAS_ASSERT_VAL(val),
+ VIC_LOCAL_TIM_PAS_DEASSERT_VAL(val),
+ VIC_LOCAT_TIM_DS_DEASSERT_VAL(val));
+
+ val = vic_inb(VIC_BXFER_DEF);
+ printk("dma: ");
+ if (val & VIC_BXFER_DEF_DUAL)
+ printk("[dual path]");
+ if (val & VIC_BXFER_DEF_LOCAL_CROSS)
+ printk("[local boundary cross]");
+ if (val & VIC_BXFER_DEF_VME_CROSS)
+ printk("[vme boundary cross]");
+
+}
+
+__initfunc(static void vic_init(void))
+{
+ unsigned char id = vic_inb(VIC_ID);
+ if ((id & 0xf0) != 0xf0)
+ panic("VIC not found");
+ printk(" VIC068A Rev. %X: ", id & 0x0f);
+
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_II);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT1);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT2);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT3);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE,VIC_VME_INT4);
+/*
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_VME_INT5);
+*/
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_VME_INT6);
+
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_VME_INT7);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_DISABLE, VIC_DMA_INT);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT1);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_HIGH|VIC_INT_DISABLE, VIC_LINT2);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_HIGH|VIC_INT_DISABLE, VIC_LINT3);
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT4);
+/*
+ vic_outb(VIC_INT_IPL(3)|VIC_INT_NOAUTO|VIC_INT_LEVEL|
+ VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT5);
+*/
+ vic_outb(VIC_INT_IPL(6)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT6);
+ vic_outb(VIC_INT_IPL(6)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_LOW|VIC_INT_DISABLE, VIC_LINT7);
+
+ vic_outb(VIC_INT_IPL(3)|
+ VIC_INT_SWITCH(0)|
+ VIC_INT_SWITCH(1)|
+ VIC_INT_SWITCH(2)|
+ VIC_INT_SWITCH(3), VIC_ICGS_INT);
+ vic_outb(VIC_INT_IPL(3)|
+ VIC_INT_SWITCH(0)|
+ VIC_INT_SWITCH(1)|
+ VIC_INT_SWITCH(2)|
+ VIC_INT_SWITCH(3), VIC_ICMS_INT);
+ vic_outb(VIC_INT_IPL(6)|
+ VIC_ERR_INT_SYSFAIL|
+ VIC_ERR_INT_TIMO|
+ VIC_ERR_INT_WRPOST|
+ VIC_ERR_INT_ACFAIL, VIC_ERR_INT);
+ vic_outb(VIC_ICxS_BASE_ID(0xf), VIC_ICGS_BASE);
+ vic_outb(VIC_ICxS_BASE_ID(0xe), VIC_ICMS_BASE);
+ vic_outb(VIC_LOCAL_BASE_ID(0x6), VIC_LOCAL_BASE);
+ vic_outb(VIC_ERR_BASE_ID(0x3), VIC_ERR_BASE);
+ vic_outb(VIC_XFER_TIMO_VME_PERIOD_32|
+ VIC_XFER_TIMO_LOCAL_PERIOD_32, VIC_XFER_TIMO);
+ vic_outb(VIC_LOCAL_TIM_PAS_ASSERT(2)|
+ VIC_LOCAT_TIM_DS_DEASSERT(1)|
+ VIC_LOCAL_TIM_PAS_DEASSERT(1), VIC_LOCAL_TIM);
+ vic_outb(VIC_BXFER_DEF_VME_CROSS|
+ VIC_BXFER_DEF_LOCAL_CROSS|
+ VIC_BXFER_DEF_AMSR|
+ VIC_BXFER_DEF_DUAL, VIC_BXFER_DEF);
+ vic_outb(VIC_SSxCR0_LOCAL_XFER_SINGLE|
+ VIC_SSxCR0_A32|VIC_SSxCR0_D32|
+ VIC_SS0CR0_TIMER_FREQ_NONE, VIC_SS0CR0);
+ vic_outb(VIC_SSxCR1_TF1(0xf)|
+ VIC_SSxCR1_TF2(0xf), VIC_SS0CR1);
+ vic_outb(VIC_SSxCR0_LOCAL_XFER_SINGLE|
+ VIC_SSxCR0_A24|VIC_SSxCR0_D32, VIC_SS1CR0);
+ vic_outb(VIC_SSxCR1_TF1(0xf)|
+ VIC_SSxCR1_TF2(0xf), VIC_SS1CR1);
+ vic_outb(VIC_IFACE_CFG_NOHALT|
+ VIC_IFACE_CFG_NOTURBO, VIC_IFACE_CFG);
+ vic_outb(VIC_AMS_CODE(0), VIC_AMS);
+ vic_outb(VIC_BXFER_CTRL_INTERLEAVE(0), VIC_BXFER_CTRL);
+ vic_outb(0, VIC_BXFER_LEN_LO);
+ vic_outb(0, VIC_BXFER_LEN_HI);
+ vic_outb(VIC_REQ_CFG_FAIRNESS_DISABLED|
+ VIC_REQ_CFG_LEVEL(3)|
+ VIC_REQ_CFG_RR_ARBITRATION, VIC_REQ_CFG);
+ vic_outb(VIC_RELEASE_BLKXFER_BLEN(0)|
+ VIC_RELEASE_RWD, VIC_RELEASE);
+ vic_outb(VIC_IC6_RUN, VIC_IC6);
+ vic_outb(0, VIC_IC7);
+
+ vic_show();
+}
+
+static void vic_start(void)
+{
+ vic_outb(VIC_INT_IPL(3)|
+ VIC_INT_NOAUTO|
+ VIC_INT_EDGE|
+ VIC_INT_HIGH|
+ VIC_INT_ENABLE, VIC_LINT7);
+}
+
+__initfunc(void baget_irq_setup(void))
+{
+ extern void bagetIRQ(void);
+
+ /* Now, it's safe to set the exception vector. */
+ set_except_vector(0, bagetIRQ);
+}
+
+extern void baget_machine_restart(char *command);
+extern void baget_machine_halt(void);
+extern void baget_machine_power_off(void);
+
+__initfunc(void baget_setup(void))
+{
+ printk("BT23/63-201n found.\n");
+ *BAGET_WRERR_ACK = 0;
+ irq_setup = baget_irq_setup;
+
+ _machine_restart = baget_machine_restart;
+ _machine_halt = baget_machine_halt;
+ _machine_power_off = baget_machine_power_off;
+
+ vac_init();
+ vic_init();
+ vac_start();
+ vic_start();
+}
diff --git a/arch/mips/baget/time.c b/arch/mips/baget/time.c
new file mode 100644
index 000000000..b24f5b93e
--- /dev/null
+++ b/arch/mips/baget/time.c
@@ -0,0 +1,106 @@
+/* $Id$
+ * time.c: Baget/MIPS specific time handling details
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/timex.h>
+#include <linux/kernel_stat.h>
+
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/ptrace.h>
+#include <asm/system.h>
+
+#include <asm/baget/baget.h>
+
+/*
+ * To have precision clock, we need to fix available clock frequency
+ */
+#define FREQ_NOM 79125 /* Baget frequency ratio */
+#define FREQ_DEN 10000
+static inline int timer_intr_valid()
+{
+ static unsigned long long ticks, valid_ticks;
+
+ if (ticks++ * FREQ_DEN >= valid_ticks * FREQ_NOM) {
+ /*
+ * We need no overflow checks,
+ * due baget unable to work 3000 years...
+ * At least without reboot...
+ */
+ valid_ticks++;
+ return 1;
+ }
+ return 0;
+}
+
+void static timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ if (timer_intr_valid()) {
+ sti();
+ do_timer(regs);
+ }
+}
+
+__initfunc(static void rtc_enable(void))
+{
+ short ic;
+
+ ic = vac_inw(VAC_INT_CTRL) ;
+ vac_outw(ic & 0xfffc, VAC_INT_CTRL);
+ vac_outw(ic, VAC_INT_CTRL);
+ vic_outb(0xb9 & 0x7f, VIC_LINT6);
+}
+
+__initfunc(static void timer_enable(void))
+{
+ unsigned char ss0cr0 = vic_inb(VIC_SS0CR0);
+ ss0cr0 &= ~VIC_SS0CR0_TIMER_FREQ_MASK;
+ ss0cr0 |= VIC_SS0CR0_TIMER_FREQ_1000HZ;
+ vic_outb(ss0cr0, VIC_SS0CR0);
+
+ vic_outb(VIC_INT_IPL(6)|VIC_INT_NOAUTO|VIC_INT_EDGE|
+ VIC_INT_LOW|VIC_INT_ENABLE, VIC_LINT2);
+}
+
+__initfunc(void time_init(void))
+{
+ if (request_irq(BAGET_VIC_TIMER_IRQ, timer_interrupt,
+ SA_INTERRUPT|SA_STATIC_ALLOC, "timer", NULL) < 0)
+ printk("time_init: unable request irq for system timer\n");
+
+ timer_enable();
+
+ /* We don't call sti() here, because it is too early for baget */
+}
+
+void do_gettimeofday(struct timeval *tv)
+{
+ unsigned long flags;
+
+ save_and_cli(flags);
+ *tv = xtime;
+ restore_flags(flags);
+}
+
+void do_settimeofday(struct timeval *tv)
+{
+ unsigned long flags;
+
+ save_and_cli(flags);
+ xtime = *tv;
+ time_state = TIME_BAD;
+ time_maxerror = MAXPHASE;
+ time_esterror = MAXPHASE;
+ restore_flags(flags);
+}
diff --git a/arch/mips/baget/vacserial.c b/arch/mips/baget/vacserial.c
new file mode 100644
index 000000000..6e3add687
--- /dev/null
+++ b/arch/mips/baget/vacserial.c
@@ -0,0 +1,2941 @@
+/* $Id$
+ * vacserial.c: VAC UART serial driver
+ * This code stealed and adopted from linux/drivers/char/serial.c
+ * See that for author info
+ *
+ * Copyright (C) 1998 Gleb Raiko & Vladimir Roganov
+ */
+
+#undef SERIAL_PARANOIA_CHECK
+#define CONFIG_SERIAL_NOPAUSE_IO
+#define SERIAL_DO_RESTART
+
+#define CONFIG_SERIAL_SHARE_IRQ
+
+/* Set of debugging defines */
+
+#undef SERIAL_DEBUG_INTR
+#undef SERIAL_DEBUG_OPEN
+#undef SERIAL_DEBUG_FLOW
+#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+
+#define RS_STROBE_TIME (10*HZ)
+#define RS_ISR_PASS_LIMIT 2 /* Beget is not a super-computer (old=256) */
+
+#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
+
+#define SERIAL_INLINE
+
+#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT)
+#define DBG_CNT(s) baget_printk("(%s):[%x] refc=%d, serc=%d, ttyc=%d-> %s\n", \
+ kdevname(tty->device),(info->flags),serial_refcount,info->count,tty->count,s)
+#else
+#define DBG_CNT(s)
+#endif
+
+#define QUAD_UART_SPEED /* Useful for Baget */
+
+/*
+ * End of serial driver configuration section.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#ifdef CONFIG_SERIAL_CONSOLE
+#include <linux/console.h>
+#endif
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/serial.h>
+#include <asm/baget/baget.h>
+
+#define BAGET_VAC_UART_IRQ 0x35
+
+/*
+ * Implementation note:
+ * It was descovered by means of advanced electronic tools,
+ * if the driver works via TX_READY interrupts then VIC generates
+ * strange self-eliminating traps. Thus, the driver is rewritten to work
+ * via TX_EMPTY
+ */
+
+/* VAC-specific check/debug switches */
+
+#undef CHECK_REG_INDEX
+#undef DEBUG_IO_PORT_A
+
+#ifdef SERIAL_INLINE
+#define _INLINE_ inline
+#endif
+
+static char *serial_name = "VAC Serial driver";
+static char *serial_version = "4.26";
+
+static DECLARE_TASK_QUEUE(tq_serial);
+
+static struct tty_driver serial_driver, callout_driver;
+static int serial_refcount;
+
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS 256
+
+/*
+ * IRQ_timeout - How long the timeout should be for each IRQ
+ * should be after the IRQ has been active.
+ */
+
+static struct async_struct *IRQ_ports[NR_IRQS];
+static int IRQ_timeout[NR_IRQS];
+#ifdef CONFIG_SERIAL_CONSOLE
+static struct console sercons;
+#endif
+
+static void autoconfig(struct serial_state * info);
+static void change_speed(struct async_struct *info);
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
+
+/*
+ * Here we define the default xmit fifo size used for each type of
+ * UART
+ */
+static struct serial_uart_config uart_config[] = {
+ { "unknown", 1, 0 }, /* Must go first -- used as unasigned */
+ { "VAC UART", 1, 0 }
+};
+#define VAC_UART_TYPE 1 /* Just index in above array */
+
+static struct serial_state rs_table[] = {
+/*
+ * VAC has tricky layout for pair of his SIO registers,
+ * so we need special function to access ones.
+ * To identify port we use their TX offset
+ */
+ { 0, 9600, VAC_UART_B_TX, BAGET_VAC_UART_IRQ,
+ STD_COM_FLAGS }, /* VAC UART B */
+ { 0, 9600, VAC_UART_A_TX, BAGET_VAC_UART_IRQ,
+ STD_COM_FLAGS } /* VAC UART A */
+};
+
+#define NR_PORTS (sizeof(rs_table)/sizeof(struct serial_state))
+
+static struct tty_struct *serial_table[NR_PORTS];
+static struct termios *serial_termios[NR_PORTS];
+static struct termios *serial_termios_locked[NR_PORTS];
+
+#ifndef MIN
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+/*
+ * tmp_buf is used as a temporary buffer by serial_write. We need to
+ * lock it in case the copy_from_user blocks while swapping in a page,
+ * and some other program tries to do a serial write at the same time.
+ * Since the lock will only come under contention when the system is
+ * swapping and available memory is low, it makes sense to share one
+ * buffer across all the serial ports, since it significantly saves
+ * memory if large numbers of serial ports are open.
+ */
+static unsigned char *tmp_buf;
+static struct semaphore tmp_buf_sem = MUTEX;
+
+static inline int serial_paranoia_check(struct async_struct *info,
+ kdev_t device, const char *routine)
+{
+#ifdef SERIAL_PARANOIA_CHECK
+ static const char *badmagic =
+ "Warning: bad magic number for serial struct (%s) in %s\n";
+ static const char *badinfo =
+ "Warning: null async_struct for (%s) in %s\n";
+
+ if (!info) {
+ printk(badinfo, kdevname(device), routine);
+ return 1;
+ }
+ if (info->magic != SERIAL_MAGIC) {
+ printk(badmagic, kdevname(device), routine);
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+/*
+ To unify UART A/B access we will use following function
+ to compute register offsets by register index.
+ */
+
+#define VAC_UART_MODE 0
+#define VAC_UART_TX 1
+#define VAC_UART_RX 2
+#define VAC_UART_INT_MASK 3
+#define VAC_UART_INT_STATUS 4
+
+#define VAC_UART_REG_NR 5
+
+static inline int uart_offset_map(unsigned long port, int reg_index)
+{
+ static const unsigned int ind_to_reg[VAC_UART_REG_NR][NR_PORTS] = {
+ { VAC_UART_B_MODE, VAC_UART_A_MODE },
+ { VAC_UART_B_TX, VAC_UART_A_TX },
+ { VAC_UART_B_RX, VAC_UART_A_RX },
+ { VAC_UART_B_INT_MASK, VAC_UART_A_INT_MASK },
+ { VAC_UART_B_INT_STATUS, VAC_UART_A_INT_STATUS }
+ };
+#ifdef CHECK_REG_INDEX
+ if (reg_index > VAC_UART_REG_NR) panic("vacserial: bad reg_index");
+#endif
+ return ind_to_reg[reg_index][port == VAC_UART_B_TX ? 0 : 1];
+}
+
+static inline unsigned int serial_inw(struct async_struct *info, int offset)
+{
+ int val = vac_inw(uart_offset_map(info->port,offset));
+#ifdef DEBUG_IO_PORT_A
+ if (info->port == VAC_UART_A_TX)
+ printk("UART_A_IN: reg = 0x%04x, val = 0x%04x\n",
+ uart_offset_map(info->port,offset), val);
+#endif
+ return val;
+}
+
+static inline unsigned int serial_inp(struct async_struct *info, int offset)
+{
+ return serial_inw(info, offset);
+}
+
+static inline unsigned int serial_in(struct async_struct *info, int offset)
+{
+ return serial_inw(info, offset);
+}
+
+static inline void serial_outw(struct async_struct *info,int offset, int value)
+{
+#ifdef DEBUG_IO_PORT_A
+ if (info->port == VAC_UART_A_TX)
+ printk("UART_A_OUT: offset = 0x%04x, val = 0x%04x\n",
+ uart_offset_map(info->port,offset), value);
+#endif
+ vac_outw(value, uart_offset_map(info->port,offset));
+}
+
+static inline void serial_outp(struct async_struct *info,int offset, int value)
+{
+ serial_outw(info,offset,value);
+}
+
+static inline void serial_out(struct async_struct *info,int offset, int value)
+{
+ serial_outw(info,offset,value);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
+ * ------------------------------------------------------------
+ */
+static void rs_stop(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_stop"))
+ return;
+
+ save_flags(flags); cli();
+ if (info->IER & VAC_UART_INT_TX_EMPTY) {
+ info->IER &= ~VAC_UART_INT_TX_EMPTY;
+ serial_out(info, VAC_UART_INT_MASK, info->IER);
+ }
+ restore_flags(flags);
+}
+
+static void rs_start(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_start"))
+ return;
+
+ save_flags(flags); cli();
+ if (info->xmit_cnt && info->xmit_buf
+ && !(info->IER & VAC_UART_INT_TX_EMPTY)) {
+ info->IER |= VAC_UART_INT_TX_EMPTY;
+ serial_out(info, VAC_UART_INT_MASK, info->IER);
+ }
+ restore_flags(flags);
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * Here starts the interrupt handling routines. All of the following
+ * subroutines are declared as inline and are folded into
+ * rs_interrupt(). They were separated out for readability's sake.
+ *
+ * Note: rs_interrupt() is a "fast" interrupt, which means that it
+ * runs with interrupts turned off. People who may want to modify
+ * rs_interrupt() should try to keep the interrupt handler as fast as
+ * possible. After you are done making modifications, it is not a bad
+ * idea to do:
+ *
+ * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
+ *
+ * and look at the resulting assemble code in serial.s.
+ *
+ * - Ted Ts'o (tytso@mit.edu), 7-Mar-93
+ * -----------------------------------------------------------------------
+ */
+
+/*
+ * This routine is used by the interrupt handler to schedule
+ * processing in the software interrupt portion of the driver.
+ */
+static _INLINE_ void rs_sched_event(struct async_struct *info,
+ int event)
+{
+ info->event |= 1 << event;
+ queue_task(&info->tqueue, &tq_serial);
+ mark_bh(SERIAL_BH);
+}
+
+static _INLINE_ void receive_chars(struct async_struct *info,
+ int *status)
+{
+ struct tty_struct *tty = info->tty;
+ unsigned short rx;
+ unsigned char ch;
+ int ignored = 0;
+ struct async_icount *icount;
+
+ icount = &info->state->icount;
+ do {
+ rx = serial_inw(info, VAC_UART_RX);
+ ch = VAC_UART_RX_DATA_MASK & rx;
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ break;
+ *tty->flip.char_buf_ptr = ch;
+ icount->rx++;
+
+#ifdef SERIAL_DEBUG_INTR
+ baget_printk("DR%02x:%02x...", rx, *status);
+#endif
+ *tty->flip.flag_buf_ptr = 0;
+ if (*status & (VAC_UART_STATUS_RX_BREAK_CHANGE
+ | VAC_UART_STATUS_RX_ERR_PARITY
+ | VAC_UART_STATUS_RX_ERR_FRAME
+ | VAC_UART_STATUS_RX_ERR_OVERRUN)) {
+ /*
+ * For statistics only
+ */
+ if (*status & VAC_UART_STATUS_RX_BREAK_CHANGE) {
+ *status &= ~(VAC_UART_STATUS_RX_ERR_FRAME
+ | VAC_UART_STATUS_RX_ERR_PARITY);
+ icount->brk++;
+ } else if (*status & VAC_UART_STATUS_RX_ERR_PARITY)
+ icount->parity++;
+ else if (*status & VAC_UART_STATUS_RX_ERR_FRAME)
+ icount->frame++;
+ if (*status & VAC_UART_STATUS_RX_ERR_OVERRUN)
+ icount->overrun++;
+
+ /*
+ * Now check to see if character should be
+ * ignored, and mask off conditions which
+ * should be ignored.
+ */
+ if (*status & info->ignore_status_mask) {
+ if (++ignored > 100)
+ break;
+ goto ignore_char;
+ }
+ *status &= info->read_status_mask;
+
+ if (*status & (VAC_UART_STATUS_RX_BREAK_CHANGE)) {
+#ifdef SERIAL_DEBUG_INTR
+ baget_printk("handling break....");
+#endif
+ *tty->flip.flag_buf_ptr = TTY_BREAK;
+ if (info->flags & ASYNC_SAK)
+ do_SAK(tty);
+ } else if (*status & VAC_UART_STATUS_RX_ERR_PARITY)
+ *tty->flip.flag_buf_ptr = TTY_PARITY;
+ else if (*status & VAC_UART_STATUS_RX_ERR_FRAME)
+ *tty->flip.flag_buf_ptr = TTY_FRAME;
+ if (*status & VAC_UART_STATUS_RX_ERR_OVERRUN) {
+ /*
+ * Overrun is special, since it's
+ * reported immediately, and doesn't
+ * affect the current character
+ */
+ if (tty->flip.count < TTY_FLIPBUF_SIZE) {
+ tty->flip.count++;
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ *tty->flip.flag_buf_ptr = TTY_OVERRUN;
+ }
+ }
+ }
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ ignore_char:
+ *status = serial_inw(info, VAC_UART_INT_STATUS);
+ } while ((*status & VAC_UART_STATUS_RX_READY));
+ tty_flip_buffer_push(tty);
+}
+
+static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
+{
+ int count;
+
+ if (info->x_char) {
+ serial_outw(info, VAC_UART_TX,
+ (((unsigned short)info->x_char)<<8));
+ info->state->icount.tx++;
+ info->x_char = 0;
+ if (intr_done)
+ *intr_done = 0;
+ return;
+ }
+ if ((info->xmit_cnt <= 0) || info->tty->stopped ||
+ info->tty->hw_stopped) {
+ info->IER &= ~VAC_UART_INT_TX_EMPTY;
+ serial_outw(info, VAC_UART_INT_MASK, info->IER);
+ return;
+ }
+ count = info->xmit_fifo_size;
+ do {
+ serial_out(info, VAC_UART_TX,
+ (unsigned short)info->xmit_buf[info->xmit_tail++] \
+ << 8);
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+ info->state->icount.tx++;
+ if (--info->xmit_cnt <= 0)
+ break;
+ } while (--count > 0);
+
+ if (info->xmit_cnt < WAKEUP_CHARS)
+ rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+
+#ifdef SERIAL_DEBUG_INTR
+ baget_printk("THRE...");
+#endif
+ if (intr_done)
+ *intr_done = 0;
+
+ if (info->xmit_cnt <= 0) {
+ info->IER &= ~VAC_UART_INT_TX_EMPTY;
+ serial_outw(info, VAC_UART_INT_MASK, info->IER);
+ }
+}
+
+static _INLINE_ void check_modem_status(struct async_struct *info)
+{
+#if 0 /* VAC hasn't modem control */
+ wake_up_interruptible(&info->open_wait);
+ rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+#endif
+}
+
+#ifdef CONFIG_SERIAL_SHARE_IRQ
+
+
+/*
+ * Specific functions needed for VAC UART interrupt enter/leave
+ */
+
+#define VAC_INT_CTRL_UART_ENABLE \
+ (VAC_INT_CTRL_TIMER_PIO10|VAC_INT_CTRL_UART_B_PIO7|VAC_INT_CTRL_UART_A_PIO7)
+
+#define VAC_INT_CTRL_UART_DISABLE(info) \
+ (VAC_INT_CTRL_TIMER_PIO10 | \
+ ((info->port == VAC_UART_A_TX) ? \
+ (VAC_INT_CTRL_UART_A_DISABLE|VAC_INT_CTRL_UART_B_PIO7) : \
+ (VAC_INT_CTRL_UART_A_PIO7|VAC_INT_CTRL_UART_B_DISABLE)))
+
+/*
+ * Following two functions were proposed by Pavel Osipenko
+ * to make VAC/VIC behaviour more regular.
+ */
+static void intr_begin(struct async_struct* info)
+{
+ serial_outw(info, VAC_UART_INT_MASK, 0);
+}
+
+static void intr_end(struct async_struct* info)
+{
+ vac_outw(VAC_INT_CTRL_UART_DISABLE(info), VAC_INT_CTRL);
+ vac_outw(VAC_INT_CTRL_UART_ENABLE, VAC_INT_CTRL);
+
+ serial_outw(info, VAC_UART_INT_MASK, info->IER);
+}
+
+/*
+ * This is the serial driver's generic interrupt routine
+ */
+static void rs_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ int status;
+ struct async_struct * info;
+ int pass_counter = 0;
+ struct async_struct *end_mark = 0;
+
+#ifdef SERIAL_DEBUG_INTR
+ baget_printk("rs_interrupt(%d)...", irq);
+#endif
+
+ info = IRQ_ports[irq];
+ if (!info)
+ return;
+
+ do {
+ intr_begin(info); /* Mark we begin port handling */
+
+ if (!info->tty ||
+ (serial_inw (info, VAC_UART_INT_STATUS)
+ & VAC_UART_STATUS_INTS) == 0)
+ {
+ if (!end_mark)
+ end_mark = info;
+ goto next;
+ }
+ end_mark = 0;
+
+ info->last_active = jiffies;
+
+ status = serial_inw(info, VAC_UART_INT_STATUS);
+#ifdef SERIAL_DEBUG_INTR
+ baget_printk("status = %x...", status);
+#endif
+ if (status & VAC_UART_STATUS_RX_READY) {
+ receive_chars(info, &status);
+ }
+ check_modem_status(info);
+ if (status & VAC_UART_STATUS_TX_EMPTY)
+ transmit_chars(info, 0);
+
+ next:
+ intr_end(info); /* Mark this port handled */
+
+ info = info->next_port;
+ if (!info) {
+ info = IRQ_ports[irq];
+ if (pass_counter++ > RS_ISR_PASS_LIMIT) {
+ break; /* Prevent infinite loops */
+ }
+ continue;
+ }
+ } while (end_mark != info);
+#ifdef SERIAL_DEBUG_INTR
+ baget_printk("end.\n");
+#endif
+
+
+}
+#endif /* #ifdef CONFIG_SERIAL_SHARE_IRQ */
+
+
+/* The original driver was simplified here:
+ two functions were joined to reduce code */
+
+#define rs_interrupt_single rs_interrupt
+
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+/*
+ * This routine is used to handle the "bottom half" processing for the
+ * serial driver, known also the "software interrupt" processing.
+ * This processing is done at the kernel interrupt level, after the
+ * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
+ * is where time-consuming activities which can not be done in the
+ * interrupt driver proper are done; the interrupt driver schedules
+ * them using rs_sched_event(), and they get done here.
+ */
+static void do_serial_bh(void)
+{
+ run_task_queue(&tq_serial);
+}
+
+static void do_softint(void *private_)
+{
+ struct async_struct *info = (struct async_struct *) private_;
+ struct tty_struct *tty;
+
+ tty = info->tty;
+ if (!tty)
+ return;
+
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+ wake_up_interruptible(&tty->write_wait);
+ }
+}
+
+/*
+ * ---------------------------------------------------------------
+ * Low level utility subroutines for the serial driver: routines to
+ * figure out the appropriate timeout for an interrupt chain, routines
+ * to initialize and startup a serial port, and routines to shutdown a
+ * serial port. Useful stuff like that.
+ * ---------------------------------------------------------------
+ */
+
+/*
+ * This routine figures out the correct timeout for a particular IRQ.
+ * It uses the smallest timeout of all of the serial ports in a
+ * particular interrupt chain. Now only used for IRQ 0....
+ */
+static void figure_IRQ_timeout(int irq)
+{
+ struct async_struct *info;
+ int timeout = 60*HZ; /* 60 seconds === a long time :-) */
+
+ info = IRQ_ports[irq];
+ if (!info) {
+ IRQ_timeout[irq] = 60*HZ;
+ return;
+ }
+ while (info) {
+ if (info->timeout < timeout)
+ timeout = info->timeout;
+ info = info->next_port;
+ }
+ if (!irq)
+ timeout = timeout / 2;
+ IRQ_timeout[irq] = timeout ? timeout : 1;
+}
+
+static int startup(struct async_struct * info)
+{
+ unsigned long flags;
+ int retval=0;
+ void (*handler)(int, void *, struct pt_regs *);
+ struct serial_state *state= info->state;
+ unsigned long page;
+
+ page = get_free_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ save_flags(flags); cli();
+
+ if (info->flags & ASYNC_INITIALIZED) {
+ free_page(page);
+ goto errout;
+ }
+ if (!state->port || !state->type) {
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+ free_page(page);
+ goto errout;
+ }
+ if (info->xmit_buf)
+ free_page(page);
+ else
+ info->xmit_buf = (unsigned char *) page;
+
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("starting up ttys%d (irq %d)...", info->line, state->irq);
+#endif
+
+ if (uart_config[info->state->type].flags & UART_STARTECH) {
+ /* Wake up UART */
+ serial_outp(info, VAC_UART_MODE, 0);
+ serial_outp(info, VAC_UART_INT_MASK, 0);
+ }
+
+ /*
+ * Allocate the IRQ if necessary
+ */
+ if (state->irq && (!IRQ_ports[state->irq] ||
+ !IRQ_ports[state->irq]->next_port)) {
+
+ if (IRQ_ports[state->irq]) {
+#ifdef CONFIG_SERIAL_SHARE_IRQ
+ free_irq(state->irq, NULL);
+ handler = rs_interrupt;
+#else
+ retval = -EBUSY;
+ goto errout;
+#endif /* CONFIG_SERIAL_SHARE_IRQ */
+ } else
+ handler = rs_interrupt_single;
+
+
+ retval = request_irq(state->irq, handler, IRQ_T(info),
+ "serial", NULL);
+ if (retval) {
+ if (capable(CAP_SYS_ADMIN)) {
+ if (info->tty)
+ set_bit(TTY_IO_ERROR,
+ &info->tty->flags);
+ retval = 0;
+ }
+ goto errout;
+ }
+ }
+
+ /*
+ * Insert serial port into IRQ chain.
+ */
+ info->prev_port = 0;
+ info->next_port = IRQ_ports[state->irq];
+ if (info->next_port)
+ info->next_port->prev_port = info;
+ IRQ_ports[state->irq] = info;
+ figure_IRQ_timeout(state->irq);
+
+ /*
+ * Clear the interrupt registers.
+ */
+ /* (void) serial_inw(info, VAC_UART_INT_STATUS); */ /* (see above) */
+ (void) serial_inw(info, VAC_UART_RX);
+
+ /*
+ * Now, initialize the UART
+ */
+ serial_outp(info, VAC_UART_MODE, VAC_UART_MODE_INITIAL); /*reset DLAB*/
+
+ /*
+ * Finally, enable interrupts
+ */
+ info->IER = VAC_UART_INT_RX_BREAK_CHANGE | VAC_UART_INT_RX_ERRS | \
+ VAC_UART_INT_RX_READY;
+ serial_outp(info, VAC_UART_INT_MASK, info->IER); /*enable interrupts*/
+
+ /*
+ * And clear the interrupt registers again for luck.
+ */
+ (void)serial_inp(info, VAC_UART_INT_STATUS);
+ (void)serial_inp(info, VAC_UART_RX);
+
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+ /*
+ * Set up serial timers...
+ */
+ timer_table[RS_TIMER].expires = jiffies + 2*HZ/100;
+ timer_active |= 1 << RS_TIMER;
+
+ /*
+ * and set the speed of the serial port
+ */
+ change_speed(info);
+
+ info->flags |= ASYNC_INITIALIZED;
+ restore_flags(flags);
+ return 0;
+
+errout:
+ restore_flags(flags);
+ return retval;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(struct async_struct * info)
+{
+ unsigned long flags;
+ struct serial_state *state;
+ int retval;
+
+ if (!(info->flags & ASYNC_INITIALIZED))
+ return;
+
+ state = info->state;
+
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("Shutting down serial port %d (irq %d)....", info->line,
+ state->irq);
+#endif
+
+ save_flags(flags); cli(); /* Disable interrupts */
+
+ /*
+ * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
+ * here so the queue might never be waken up
+ */
+ wake_up_interruptible(&info->delta_msr_wait);
+
+ /*
+ * First unlink the serial port from the IRQ chain...
+ */
+ if (info->next_port)
+ info->next_port->prev_port = info->prev_port;
+ if (info->prev_port)
+ info->prev_port->next_port = info->next_port;
+ else
+ IRQ_ports[state->irq] = info->next_port;
+ figure_IRQ_timeout(state->irq);
+
+ /*
+ * Free the IRQ, if necessary
+ */
+ if (state->irq && (!IRQ_ports[state->irq] ||
+ !IRQ_ports[state->irq]->next_port)) {
+ if (IRQ_ports[state->irq]) {
+ free_irq(state->irq, NULL);
+ retval = request_irq(state->irq, rs_interrupt_single,
+ IRQ_T(info), "serial", NULL);
+
+ if (retval)
+ printk("serial shutdown: request_irq: error %d"
+ " Couldn't reacquire IRQ.\n", retval);
+ } else
+ free_irq(state->irq, NULL);
+ }
+
+ if (info->xmit_buf) {
+ free_page((unsigned long) info->xmit_buf);
+ info->xmit_buf = 0;
+ }
+
+ info->IER = 0;
+ serial_outp(info, VAC_UART_INT_MASK, 0x00); /* disable all intrs */
+
+ /* disable break condition */
+ serial_out(info, VAC_UART_MODE, serial_inp(info, VAC_UART_MODE) & \
+ ~VAC_UART_MODE_SEND_BREAK);
+
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~ASYNC_INITIALIZED;
+ restore_flags(flags);
+}
+
+/*
+ * When we set line mode, we call this function
+ * for Baget-specific adjustments.
+ */
+
+static inline unsigned short vac_uart_mode_fixup (unsigned short cval)
+{
+#ifdef QUAD_UART_SPEED
+ /*
+ * When we are using 4-x advantage in speed:
+ *
+ * Disadvantage : can't support 75, 150 bauds
+ * Advantage : can support 19200, 38400 bauds
+ */
+ char speed = 7 & (cval >> 10);
+ cval &= ~(7 << 10);
+ cval |= VAC_UART_MODE_BAUD(speed-2);
+#endif
+
+ /*
+ * In general, we have Tx and Rx ON all time
+ * and use int mask flag for their disabling.
+ */
+ cval |= VAC_UART_MODE_RX_ENABLE;
+ cval |= VAC_UART_MODE_TX_ENABLE;
+ cval |= VAC_UART_MODE_CHAR_RX_ENABLE;
+ cval |= VAC_UART_MODE_CHAR_TX_ENABLE;
+
+ /* Low 4 bits are not used in UART */
+ cval &= ~0xf;
+
+ return cval;
+}
+
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static void change_speed(struct async_struct *info)
+{
+ unsigned short port;
+ int quot = 0, baud_base, baud;
+ unsigned cflag, cval;
+ int bits;
+ unsigned long flags;
+
+ if (!info->tty || !info->tty->termios)
+ return;
+ cflag = info->tty->termios->c_cflag;
+ if (!(port = info->port))
+ return;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS7: cval = 0x0; bits = 9; break;
+ case CS8: cval = VAC_UART_MODE_8BIT_CHAR; bits = 10; break;
+ /* Never happens, but GCC is too dumb to figure it out */
+ case CS5:
+ case CS6:
+ default: cval = 0x0; bits = 9; break;
+ }
+ cval &= ~VAC_UART_MODE_PARITY_ENABLE;
+ if (cflag & PARENB) {
+ cval |= VAC_UART_MODE_PARITY_ENABLE;
+ bits++;
+ }
+ if (cflag & PARODD)
+ cval |= VAC_UART_MODE_PARITY_ODD;
+
+ /* Determine divisor based on baud rate */
+ baud = tty_get_baud_rate(info->tty);
+ baud_base = info->state->baud_base;
+ if (baud == 38400 &&
+ ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
+ quot = info->state->custom_divisor;
+ else {
+ if (baud == 134)
+ /* Special case since 134 is really 134.5 */
+ quot = (2*baud_base / 269);
+ else if (baud)
+ quot = baud_base / baud;
+ }
+ /* If the quotient is ever zero, default to 9600 bps */
+ if (!quot)
+ quot = baud_base / 9600;
+ info->quot = quot;
+ info->timeout = ((info->xmit_fifo_size*HZ*bits*quot) / baud_base);
+ info->timeout += HZ/50; /* Add .02 seconds of slop */
+
+ serial_out(info, VAC_UART_INT_MASK, info->IER);
+
+ /*
+ * Set up parity check flag
+ */
+#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+ info->read_status_mask = VAC_UART_STATUS_RX_ERR_OVERRUN | \
+ VAC_UART_STATUS_TX_EMPTY | VAC_UART_STATUS_RX_READY;
+ if (I_INPCK(info->tty))
+ info->read_status_mask |= VAC_UART_STATUS_RX_ERR_FRAME | \
+ VAC_UART_STATUS_RX_ERR_PARITY;
+ if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+ info->read_status_mask |= VAC_UART_STATUS_RX_BREAK_CHANGE;
+
+ /*
+ * Characters to ignore
+ */
+ info->ignore_status_mask = 0;
+ if (I_IGNPAR(info->tty))
+ info->ignore_status_mask |= VAC_UART_STATUS_RX_ERR_PARITY | \
+ VAC_UART_STATUS_RX_ERR_FRAME;
+ if (I_IGNBRK(info->tty)) {
+ info->ignore_status_mask |= VAC_UART_STATUS_RX_BREAK_CHANGE;
+ /*
+ * If we're ignore parity and break indicators, ignore
+ * overruns too. (For real raw support).
+ */
+ if (I_IGNPAR(info->tty))
+ info->ignore_status_mask |= \
+ VAC_UART_STATUS_RX_ERR_OVERRUN;
+ }
+ /*
+ * !!! ignore all characters if CREAD is not set
+ */
+ if ((cflag & CREAD) == 0)
+ info->ignore_status_mask |= VAC_UART_STATUS_RX_READY;
+ save_flags(flags); cli();
+
+
+ switch (baud) {
+ default:
+ case 9600:
+ cval |= VAC_UART_MODE_BAUD(7);
+ break;
+ case 4800:
+ cval |= VAC_UART_MODE_BAUD(6);
+ break;
+ case 2400:
+ cval |= VAC_UART_MODE_BAUD(5);
+ break;
+ case 1200:
+ cval |= VAC_UART_MODE_BAUD(4);
+ break;
+ case 600:
+ cval |= VAC_UART_MODE_BAUD(3);
+ break;
+ case 300:
+ cval |= VAC_UART_MODE_BAUD(2);
+ break;
+#ifndef QUAD_UART_SPEED
+ case 150:
+#else
+ case 38400:
+#endif
+ cval |= VAC_UART_MODE_BAUD(1);
+ break;
+#ifndef QUAD_UART_SPEED
+ case 75:
+#else
+ case 19200:
+#endif
+ cval |= VAC_UART_MODE_BAUD(0);
+ break;
+ }
+
+ /* Baget VAC need some adjustments for computed value */
+ cval = vac_uart_mode_fixup(cval);
+
+ serial_outp(info, VAC_UART_MODE, cval);
+ restore_flags(flags);
+}
+
+static void rs_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_put_char"))
+ return;
+
+ if (!tty || !info->xmit_buf)
+ return;
+
+ save_flags(flags); cli();
+ if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
+ restore_flags(flags);
+ return;
+ }
+
+ info->xmit_buf[info->xmit_head++] = ch;
+ info->xmit_head &= SERIAL_XMIT_SIZE-1;
+ info->xmit_cnt++;
+ restore_flags(flags);
+}
+
+static void rs_flush_chars(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_flush_chars"))
+ return;
+
+ if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
+ !info->xmit_buf)
+ return;
+
+ save_flags(flags); cli();
+ info->IER |= VAC_UART_INT_TX_EMPTY;
+ serial_out(info, VAC_UART_INT_MASK, info->IER);
+ restore_flags(flags);
+}
+
+static int rs_write(struct tty_struct * tty, int from_user,
+ const unsigned char *buf, int count)
+{
+ int c, ret = 0;
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_write"))
+ return 0;
+
+ if (!tty || !info->xmit_buf || !tmp_buf)
+ return 0;
+
+ save_flags(flags);
+ if (from_user) {
+ down(&tmp_buf_sem);
+ while (1) {
+ c = MIN(count,
+ MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0)
+ break;
+
+ c -= copy_from_user(tmp_buf, buf, c);
+ if (!c) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ cli();
+ c = MIN(c, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
+ info->xmit_head = ((info->xmit_head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ info->xmit_cnt += c;
+ restore_flags(flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ up(&tmp_buf_sem);
+ } else {
+ while (1) {
+ cli();
+ c = MIN(count,
+ MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0) {
+ restore_flags(flags);
+ break;
+ }
+ memcpy(info->xmit_buf + info->xmit_head, buf, c);
+ info->xmit_head = ((info->xmit_head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ info->xmit_cnt += c;
+ restore_flags(flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ }
+ if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
+ !(info->IER & VAC_UART_INT_TX_EMPTY)) {
+ info->IER |= VAC_UART_INT_TX_EMPTY;
+ serial_out(info, VAC_UART_INT_MASK, info->IER);
+ }
+ return ret;
+}
+
+static int rs_write_room(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ int ret;
+
+ if (serial_paranoia_check(info, tty->device, "rs_write_room"))
+ return 0;
+ ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
+ if (ret < 0)
+ ret = 0;
+ return ret;
+}
+
+static int rs_chars_in_buffer(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->device, "rs_chars_in_buffer"))
+ return 0;
+ return info->xmit_cnt;
+}
+
+static void rs_flush_buffer(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_flush_buffer"))
+ return;
+
+ save_flags(flags); cli();
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+ restore_flags(flags);
+
+ wake_up_interruptible(&tty->write_wait);
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+}
+
+/*
+ * This function is used to send a high-priority XON/XOFF character to
+ * the device
+ */
+static void rs_send_xchar(struct tty_struct *tty, char ch)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->device, "rs_send_char"))
+ return;
+
+ info->x_char = ch;
+ if (ch) {
+ /* Make sure transmit interrupts are on */
+ info->IER |= VAC_UART_INT_TX_EMPTY;
+ serial_out(info, VAC_UART_INT_MASK, info->IER);
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_throttle()
+ *
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void rs_throttle(struct tty_struct * tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+#ifdef SERIAL_DEBUG_THROTTLE
+ char buf[64];
+
+ baget_printk("throttle %s: %d....\n", tty_name(tty, buf),
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->device, "rs_throttle"))
+ return;
+
+ if (I_IXOFF(tty))
+ rs_send_xchar(tty, STOP_CHAR(tty));
+}
+
+static void rs_unthrottle(struct tty_struct * tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+#ifdef SERIAL_DEBUG_THROTTLE
+ char buf[64];
+
+ baget_printk("unthrottle %s: %d....\n", tty_name(tty, buf),
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->device, "rs_unthrottle"))
+ return;
+
+ if (I_IXOFF(tty)) {
+ if (info->x_char)
+ info->x_char = 0;
+ else
+ rs_send_xchar(tty, START_CHAR(tty));
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_ioctl() and friends
+ * ------------------------------------------------------------
+ */
+
+static int get_serial_info(struct async_struct * info,
+ struct serial_struct * retinfo)
+{
+ struct serial_struct tmp;
+ struct serial_state *state = info->state;
+
+ if (!retinfo)
+ return -EFAULT;
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = state->type;
+ tmp.line = state->line;
+ tmp.port = state->port;
+ tmp.irq = state->irq;
+ tmp.flags = state->flags;
+ tmp.xmit_fifo_size = state->xmit_fifo_size;
+ tmp.baud_base = state->baud_base;
+ tmp.close_delay = state->close_delay;
+ tmp.closing_wait = state->closing_wait;
+ tmp.custom_divisor = state->custom_divisor;
+ tmp.hub6 = state->hub6;
+ if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int set_serial_info(struct async_struct * info,
+ struct serial_struct * new_info)
+{
+ struct serial_struct new_serial;
+ struct serial_state old_state, *state;
+ unsigned int i,change_irq,change_port;
+ int retval = 0;
+
+ if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
+ return -EFAULT;
+ state = info->state;
+ old_state = *state;
+
+ change_irq = new_serial.irq != state->irq;
+ change_port = (new_serial.port != state->port) ||
+ (new_serial.hub6 != state->hub6);
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if (change_irq || change_port ||
+ (new_serial.baud_base != state->baud_base) ||
+ (new_serial.type != state->type) ||
+ (new_serial.close_delay != state->close_delay) ||
+ (new_serial.xmit_fifo_size != state->xmit_fifo_size) ||
+ ((new_serial.flags & ~ASYNC_USR_MASK) !=
+ (state->flags & ~ASYNC_USR_MASK)))
+ return -EPERM;
+ state->flags = ((state->flags & ~ASYNC_USR_MASK) |
+ (new_serial.flags & ASYNC_USR_MASK));
+ state->custom_divisor = new_serial.custom_divisor;
+ goto check_and_exit;
+ }
+
+ new_serial.irq = irq_cannonicalize(new_serial.irq);
+
+ if ((new_serial.irq >= NR_IRQS) || (new_serial.port > 0xffff) ||
+ (new_serial.type < PORT_UNKNOWN) || (new_serial.type > PORT_MAX)) {
+ return -EINVAL;
+ }
+
+ if ((new_serial.type != state->type) ||
+ (new_serial.xmit_fifo_size <= 0))
+ new_serial.xmit_fifo_size =
+ uart_config[state->type].dfl_xmit_fifo_size;
+
+ /* Make sure address is not already in use */
+ if (new_serial.type) {
+ for (i = 0 ; i < NR_PORTS; i++)
+ if ((state != &rs_table[i]) &&
+ (rs_table[i].port == new_serial.port) &&
+ rs_table[i].type)
+ return -EADDRINUSE;
+ }
+
+ if ((change_port || change_irq) && (state->count > 1))
+ return -EBUSY;
+
+ /*
+ * OK, past this point, all the error checking has been done.
+ * At this point, we start making changes.....
+ */
+
+ state->baud_base = new_serial.baud_base;
+ state->flags = ((state->flags & ~ASYNC_FLAGS) |
+ (new_serial.flags & ASYNC_FLAGS));
+ info->flags = ((state->flags & ~ASYNC_INTERNAL_FLAGS) |
+ (info->flags & ASYNC_INTERNAL_FLAGS));
+ state->custom_divisor = new_serial.custom_divisor;
+ state->type = new_serial.type;
+ state->close_delay = new_serial.close_delay * HZ/100;
+ state->closing_wait = new_serial.closing_wait * HZ/100;
+ info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->xmit_fifo_size = state->xmit_fifo_size =
+ new_serial.xmit_fifo_size;
+
+ release_region(state->port,8);
+ if (change_port || change_irq) {
+ /*
+ * We need to shutdown the serial port at the old
+ * port/irq combination.
+ */
+ shutdown(info);
+ state->irq = new_serial.irq;
+ info->port = state->port = new_serial.port;
+ info->hub6 = state->hub6 = new_serial.hub6;
+ }
+ if (state->type != PORT_UNKNOWN)
+ request_region(state->port,8,"serial(set)");
+
+
+check_and_exit:
+ if (!state->port || !state->type)
+ return 0;
+ if (state->flags & ASYNC_INITIALIZED) {
+ if (((old_state.flags & ASYNC_SPD_MASK) !=
+ (state->flags & ASYNC_SPD_MASK)) ||
+ (old_state.custom_divisor != state->custom_divisor)) {
+ if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
+ info->tty->alt_speed = 57600;
+ if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
+ info->tty->alt_speed = 115200;
+ if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
+ info->tty->alt_speed = 230400;
+ if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
+ info->tty->alt_speed = 460800;
+ change_speed(info);
+ }
+ } else
+ retval = startup(info);
+ return retval;
+}
+
+
+/*
+ * get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * is emptied. On bus types like RS485, the transmitter must
+ * release the bus after transmitting. This must be done when
+ * the transmit shift register is empty, not be done when the
+ * transmit holding register is empty. This functionality
+ * allows an RS485 driver to be written in user space.
+ */
+static int get_lsr_info(struct async_struct * info, unsigned int *value)
+{
+ unsigned short status;
+ unsigned int result;
+ unsigned long flags;
+
+ save_flags(flags); cli();
+ status = serial_inw(info, VAC_UART_INT_STATUS);
+ restore_flags(flags);
+ result = ((status & VAC_UART_STATUS_TX_EMPTY) ? TIOCSER_TEMT : 0);
+ return put_user(result,value);
+}
+
+
+static int get_modem_info(struct async_struct * info, unsigned int *value)
+{
+ unsigned int result;
+
+ result = TIOCM_CAR | TIOCM_DSR;
+ return put_user(result,value);
+}
+
+static int set_modem_info(struct async_struct * info, unsigned int cmd,
+ unsigned int *value)
+{
+ int error;
+ unsigned int arg;
+
+ error = get_user(arg, value);
+ if (error)
+ return error;
+ switch (cmd) {
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int do_autoconfig(struct async_struct * info)
+{
+ int retval;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (info->state->count > 1)
+ return -EBUSY;
+
+ shutdown(info);
+
+ autoconfig(info->state);
+
+ retval = startup(info);
+ if (retval)
+ return retval;
+ return 0;
+}
+
+/*
+ * rs_break() --- routine which turns the break handling on or off
+ */
+static void rs_break(struct tty_struct *tty, int break_state)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_break"))
+ return;
+
+ if (!info->port)
+ return;
+ save_flags(flags); cli();
+ if (break_state == -1)
+ serial_outp(info, VAC_UART_MODE,
+ serial_inp(info, VAC_UART_MODE) | \
+ VAC_UART_MODE_SEND_BREAK);
+ else
+ serial_outp(info, VAC_UART_MODE,
+ serial_inp(info, VAC_UART_MODE) & \
+ ~VAC_UART_MODE_SEND_BREAK);
+ restore_flags(flags);
+}
+
+static int rs_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ int error;
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_icount cprev, cnow; /* kernel counter temps */
+ struct serial_icounter_struct *p_cuser; /* user space */
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->device, "rs_ioctl"))
+ return -ENODEV;
+
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
+ (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+
+ switch (cmd) {
+ case TIOCMGET:
+ return get_modem_info(info, (unsigned int *) arg);
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ return set_modem_info(info, cmd, (unsigned int *) arg);
+ case TIOCGSERIAL:
+ return get_serial_info(info,
+ (struct serial_struct *) arg);
+ case TIOCSSERIAL:
+ return set_serial_info(info,
+ (struct serial_struct *) arg);
+ case TIOCSERCONFIG:
+ return do_autoconfig(info);
+
+ case TIOCSERGETLSR: /* Get line status register */
+ return get_lsr_info(info, (unsigned int *) arg);
+
+ case TIOCSERGSTRUCT:
+ if (copy_to_user((struct async_struct *) arg,
+ info, sizeof(struct async_struct)))
+ return -EFAULT;
+ return 0;
+
+ /*
+ * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)to change
+ * - mask passed in arg for lines of interest
+ * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+ * Caller should use TIOCGICOUNT to see which one it was
+ */
+ case TIOCMIWAIT:
+ save_flags(flags); cli();
+ /* note the counters on entry */
+ cprev = info->state->icount;
+ restore_flags(flags);
+ while (1) {
+ interruptible_sleep_on(&info->delta_msr_wait);
+ /* see if a signal did it */
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ save_flags(flags); cli();
+ cnow = info->state->icount; /* atomic copy */
+ restore_flags(flags);
+ if (cnow.rng == cprev.rng &&
+ cnow.dsr == cprev.dsr &&
+ cnow.dcd == cprev.dcd &&
+ cnow.cts == cprev.cts)
+ return -EIO; /* no change => error */
+ if ( ((arg & TIOCM_RNG) &&
+ (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) &&
+ (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) &&
+ (cnow.dcd != cprev.dcd)) ||
+ ((arg & TIOCM_CTS) &&
+ (cnow.cts != cprev.cts)) ) {
+ return 0;
+ }
+ cprev = cnow;
+ }
+ /* NOTREACHED */
+
+ /*
+ * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+ * Return: write counters to the user passed counter struct
+ * NB: both 1->0 and 0->1 transitions are counted except for
+ * RI where only 0->1 is counted.
+ */
+ case TIOCGICOUNT:
+ save_flags(flags); cli();
+ cnow = info->state->icount;
+ restore_flags(flags);
+ p_cuser = (struct serial_icounter_struct *) arg;
+ error = put_user(cnow.cts, &p_cuser->cts);
+ if (error) return error;
+ error = put_user(cnow.dsr, &p_cuser->dsr);
+ if (error) return error;
+ error = put_user(cnow.rng, &p_cuser->rng);
+ if (error) return error;
+ error = put_user(cnow.dcd, &p_cuser->dcd);
+ if (error) return error;
+ error = put_user(cnow.rx, &p_cuser->rx);
+ if (error) return error;
+ error = put_user(cnow.tx, &p_cuser->tx);
+ if (error) return error;
+ error = put_user(cnow.frame, &p_cuser->frame);
+ if (error) return error;
+ error = put_user(cnow.overrun, &p_cuser->overrun);
+ if (error) return error;
+ error = put_user(cnow.parity, &p_cuser->parity);
+ if (error) return error;
+ error = put_user(cnow.brk, &p_cuser->brk);
+ if (error) return error;
+ error = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
+
+ if (error) return error;
+ return 0;
+
+ case TIOCSERGWILD:
+ case TIOCSERSWILD:
+ /* "setserial -W" is called in Debian boot */
+ printk ("TIOCSER?WILD ioctl obsolete, ignored.\n");
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if ( (tty->termios->c_cflag == old_termios->c_cflag)
+ && ( RELEVANT_IFLAG(tty->termios->c_iflag)
+ == RELEVANT_IFLAG(old_termios->c_iflag)))
+ return;
+
+ change_speed(info);
+
+ /* Handle turning off CRTSCTS */
+ if ((old_termios->c_cflag & CRTSCTS) &&
+ !(tty->termios->c_cflag & CRTSCTS)) {
+ tty->hw_stopped = 0;
+ rs_start(tty);
+ }
+
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_close()
+ *
+ * This routine is called when the serial port gets closed. First, we
+ * wait for the last remaining data to be sent. Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ * ------------------------------------------------------------
+ */
+static void rs_close(struct tty_struct *tty, struct file * filp)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct serial_state *state;
+ unsigned long flags;
+
+ if (!info || serial_paranoia_check(info, tty->device, "rs_close"))
+ return;
+
+ state = info->state;
+
+ save_flags(flags); cli();
+
+ if (tty_hung_up_p(filp)) {
+ DBG_CNT("before DEC-hung");
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+ return;
+ }
+
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("rs_close ttys%d, count = %d\n",
+ info->line, state->count);
+#endif
+ if ((tty->count == 1) && (state->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. state->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ baget_printk("rs_close: bad serial port count; "
+ "tty->count is 1, "
+ "state->count is %d\n", state->count);
+ state->count = 1;
+ }
+ if (--state->count < 0) {
+ baget_printk("rs_close: bad serial port count for "
+ "ttys%d: %d\n",
+ info->line, state->count);
+ state->count = 0;
+ }
+ if (state->count) {
+ DBG_CNT("before DEC-2");
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+ return;
+ }
+ info->flags |= ASYNC_CLOSING;
+ /*
+ * Save the termios structure, since this port may have
+ * separate termios for callout and dialin.
+ */
+ if (info->flags & ASYNC_NORMAL_ACTIVE)
+ info->state->normal_termios = *tty->termios;
+ if (info->flags & ASYNC_CALLOUT_ACTIVE)
+ info->state->callout_termios = *tty->termios;
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ tty->closing = 1;
+ if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, info->closing_wait);
+ /*
+ * At this point we stop accepting input. To do this, we
+ * disable the receive line status interrupts, and tell the
+ * interrupt driver to stop checking the data ready bit in the
+ * line status register.
+ */
+ info->IER &= ~(VAC_UART_INT_RX_BREAK_CHANGE | VAC_UART_INT_RX_ERRS);
+ info->read_status_mask &= ~VAC_UART_STATUS_RX_READY;
+ if (info->flags & ASYNC_INITIALIZED) {
+ serial_outw(info, VAC_UART_INT_MASK, info->IER);
+ /*
+ * Before we drop DTR, make sure the UART transmitter
+ * has completely drained; this is especially
+ * important if there is a transmit FIFO!
+ */
+ rs_wait_until_sent(tty, info->timeout);
+ }
+ shutdown(info);
+ if (tty->driver.flush_buffer)
+ tty->driver.flush_buffer(tty);
+ if (tty->ldisc.flush_buffer)
+ tty->ldisc.flush_buffer(tty);
+ tty->closing = 0;
+ info->event = 0;
+ info->tty = 0;
+ if (info->blocked_open) {
+ if (info->close_delay) {
+ current->state = TASK_INTERRUPTIBLE;
+ current->timeout = jiffies + info->close_delay;
+ schedule();
+ }
+ wake_up_interruptible(&info->open_wait);
+ }
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
+ ASYNC_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+}
+
+/*
+ * rs_wait_until_sent() --- wait until the transmitter is empty
+ */
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ unsigned long orig_jiffies, char_time;
+ int lsr;
+
+ if (serial_paranoia_check(info, tty->device, "rs_wait_until_sent"))
+ return;
+
+ if (info->state->type == PORT_UNKNOWN)
+ return;
+
+ if (info->xmit_fifo_size == 0)
+ return; /* Just in case.... */
+
+ orig_jiffies = jiffies;
+ /*
+ * Set the check interval to be 1/5 of the estimated time to
+ * send a single character, and make it at least 1. The check
+ * interval should also be less than the timeout.
+ *
+ * Note: we have to use pretty tight timings here to satisfy
+ * the NIST-PCTS.
+ */
+ char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
+ char_time = char_time / 5;
+ if (char_time == 0)
+ char_time = 1;
+ if (timeout)
+ char_time = MIN(char_time, timeout);
+#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+ baget_printk("In rs_wait_until_sent(%d) check=%lu...",
+ timeout, char_time);
+ baget_printk("jiff=%lu...", jiffies);
+#endif
+ while (!((lsr = serial_inp(info, VAC_UART_INT_STATUS)) & \
+ VAC_UART_STATUS_TX_EMPTY)) {
+#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+ baget_printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
+#endif
+ current->state = TASK_INTERRUPTIBLE;
+ current->counter = 0; /* make us low-priority */
+ current->timeout = jiffies + char_time;
+ schedule();
+ if (signal_pending(current))
+ break;
+ if (timeout && ((orig_jiffies + timeout) < jiffies))
+ break;
+ }
+ current->state = TASK_RUNNING;
+#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+ baget_printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
+#endif
+}
+
+/*
+ * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+static void rs_hangup(struct tty_struct *tty)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct serial_state *state = info->state;
+
+ if (serial_paranoia_check(info, tty->device, "rs_hangup"))
+ return;
+
+ state = info->state;
+
+ rs_flush_buffer(tty);
+ shutdown(info);
+ info->event = 0;
+ state->count = 0;
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
+ info->tty = 0;
+ wake_up_interruptible(&info->open_wait);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_open() and friends
+ * ------------------------------------------------------------
+ */
+static int block_til_ready(struct tty_struct *tty, struct file * filp,
+ struct async_struct *info)
+{
+ struct wait_queue wait = { current, NULL };
+ struct serial_state *state = info->state;
+ int retval;
+ int do_clocal = 0, extra_count = 0;
+ unsigned long flags;
+
+ /*
+ * If the device is in the middle of being closed, then block
+ * until it's done, and then try again.
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & ASYNC_CLOSING)) {
+ if (info->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+#ifdef SERIAL_DO_RESTART
+ return ((info->flags & ASYNC_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+#else
+ return -EAGAIN;
+#endif
+ }
+
+ /*
+ * If this is a callout device, then just make sure the normal
+ * device isn't being used.
+ */
+ if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
+ if (info->flags & ASYNC_NORMAL_ACTIVE)
+ return -EBUSY;
+ if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (info->flags & ASYNC_SESSION_LOCKOUT) &&
+ (info->session != current->session))
+ return -EBUSY;
+ if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (info->flags & ASYNC_PGRP_LOCKOUT) &&
+ (info->pgrp != current->pgrp))
+ return -EBUSY;
+ info->flags |= ASYNC_CALLOUT_ACTIVE;
+ return 0;
+ }
+
+ /*
+ * If non-blocking mode is set, or the port is not enabled,
+ * then make the check up front and then exit.
+ */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
+ if (info->flags & ASYNC_CALLOUT_ACTIVE)
+ return -EBUSY;
+ info->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (info->flags & ASYNC_CALLOUT_ACTIVE) {
+ if (state->normal_termios.c_cflag & CLOCAL)
+ do_clocal = 1;
+ } else {
+ if (tty->termios->c_cflag & CLOCAL)
+ do_clocal = 1;
+ }
+
+ /*
+ * Block waiting for the carrier detect and the line to become
+ * free (i.e., not in use by the callout). While we are in
+ * this loop, state->count is dropped by one, so that
+ * rs_close() knows when to free things. We restore it upon
+ * exit, either normal or abnormal.
+ */
+ retval = 0;
+ add_wait_queue(&info->open_wait, &wait);
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("block_til_ready before block: ttys%d, count = %d\n",
+ state->line, state->count);
+#endif
+ save_flags(flags); cli();
+ if (!tty_hung_up_p(filp)) {
+ extra_count = 1;
+ state->count--;
+ }
+ restore_flags(flags);
+ info->blocked_open++;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ if (tty_hung_up_p(filp) ||
+ !(info->flags & ASYNC_INITIALIZED)) {
+#ifdef SERIAL_DO_RESTART
+ if (info->flags & ASYNC_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+#else
+ retval = -EAGAIN;
+#endif
+ break;
+ }
+ if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ !(info->flags & ASYNC_CLOSING))
+ break;
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("block_til_ready blocking: ttys%d, count = %d\n",
+ info->line, state->count);
+#endif
+ schedule();
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&info->open_wait, &wait);
+ if (extra_count)
+ state->count++;
+ info->blocked_open--;
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("block_til_ready after blocking: ttys%d, count = %d\n",
+ info->line, state->count);
+#endif
+ if (retval)
+ return retval;
+ info->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+}
+
+static int get_async_struct(int line, struct async_struct **ret_info)
+{
+ struct async_struct *info;
+ struct serial_state *sstate;
+
+ sstate = rs_table + line;
+ sstate->count++;
+ if (sstate->info) {
+ *ret_info = sstate->info;
+ return 0;
+ }
+ info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
+ if (!info) {
+ sstate->count--;
+ return -ENOMEM;
+ }
+ memset(info, 0, sizeof(struct async_struct));
+ info->magic = SERIAL_MAGIC;
+ info->port = sstate->port;
+ info->flags = sstate->flags;
+ info->xmit_fifo_size = sstate->xmit_fifo_size;
+ info->line = line;
+ info->tqueue.routine = do_softint;
+ info->tqueue.data = info;
+ info->state = sstate;
+ if (sstate->info) {
+ kfree_s(info, sizeof(struct async_struct));
+ *ret_info = sstate->info;
+ return 0;
+ }
+ *ret_info = sstate->info = info;
+ return 0;
+}
+
+/*
+ * This routine is called whenever a serial port is opened. It
+ * enables interrupts for a serial port, linking in its async structure into
+ * the IRQ chain. It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+static int rs_open(struct tty_struct *tty, struct file * filp)
+{
+ struct async_struct *info;
+ int retval, line;
+ unsigned long page;
+
+ MOD_INC_USE_COUNT;
+ line = MINOR(tty->device) - tty->driver.minor_start;
+ if ((line < 0) || (line >= NR_PORTS)) {
+ MOD_DEC_USE_COUNT;
+ return -ENODEV;
+ }
+ retval = get_async_struct(line, &info);
+ if (retval) {
+ MOD_DEC_USE_COUNT;
+ return retval;
+ }
+ tty->driver_data = info;
+ info->tty = tty;
+ if (serial_paranoia_check(info, tty->device, "rs_open")) {
+ MOD_DEC_USE_COUNT;
+ return -ENODEV;
+ }
+
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("rs_open %s%d, count = %d\n",
+ tty->driver.name, info->line,
+ info->state->count);
+#endif
+ info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+
+ if (!tmp_buf) {
+ page = get_free_page(GFP_KERNEL);
+ if (!page) {
+ MOD_DEC_USE_COUNT;
+ return -ENOMEM;
+ }
+ if (tmp_buf)
+ free_page(page);
+ else
+ tmp_buf = (unsigned char *) page;
+ }
+
+ /*
+ * If the port is the middle of closing, bail out now
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & ASYNC_CLOSING)) {
+ if (info->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+ MOD_DEC_USE_COUNT;
+#ifdef SERIAL_DO_RESTART
+ return ((info->flags & ASYNC_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+#else
+ return -EAGAIN;
+#endif
+ }
+
+ /*
+ * Start up serial port
+ */
+ retval = startup(info);
+ if (retval) {
+ MOD_DEC_USE_COUNT;
+ return retval;
+ }
+
+ retval = block_til_ready(tty, filp, info);
+ if (retval) {
+ MOD_DEC_USE_COUNT;
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("rs_open returning after block_til_ready "
+ "with %d\n",
+ retval);
+#endif
+ return retval;
+ }
+
+ if ((info->state->count == 1) &&
+ (info->flags & ASYNC_SPLIT_TERMIOS)) {
+ if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
+ *tty->termios = info->state->normal_termios;
+ else
+ *tty->termios = info->state->callout_termios;
+ change_speed(info);
+ }
+#ifdef CONFIG_SERIAL_CONSOLE
+ if (sercons.cflag && sercons.index == line) {
+ tty->termios->c_cflag = sercons.cflag;
+ sercons.cflag = 0;
+ change_speed(info);
+ }
+#endif
+ info->session = current->session;
+ info->pgrp = current->pgrp;
+
+#ifdef SERIAL_DEBUG_OPEN
+ baget_printk("rs_open ttys%d successful...", info->line);
+#endif
+ return 0;
+}
+
+/*
+ * /proc fs routines....
+ */
+
+static inline int line_info(char *buf, struct serial_state *state)
+{
+ struct async_struct *info = state->info, scr_info;
+ int ret;
+
+ ret = sprintf(buf, "%d: uart:%s port:%X irq:%d",
+ state->line, uart_config[state->type].name,
+ state->port, state->irq);
+
+ if (!state->port || (state->type == PORT_UNKNOWN)) {
+ ret += sprintf(buf+ret, "\n");
+ return ret;
+ }
+
+ /*
+ * Figure out the current RS-232 lines
+ */
+ if (!info) {
+ info = &scr_info; /* This is just for serial_{in,out} */
+
+ info->magic = SERIAL_MAGIC;
+ info->port = state->port;
+ info->flags = state->flags;
+ info->quot = 0;
+ info->tty = 0;
+ }
+
+ if (info->quot) {
+ ret += sprintf(buf+ret, " baud:%d",
+ state->baud_base / info->quot);
+ }
+
+ ret += sprintf(buf+ret, " tx:%d rx:%d",
+ state->icount.tx, state->icount.rx);
+
+ if (state->icount.frame)
+ ret += sprintf(buf+ret, " fe:%d", state->icount.frame);
+
+ if (state->icount.parity)
+ ret += sprintf(buf+ret, " pe:%d", state->icount.parity);
+
+ if (state->icount.brk)
+ ret += sprintf(buf+ret, " brk:%d", state->icount.brk);
+
+ if (state->icount.overrun)
+ ret += sprintf(buf+ret, " oe:%d", state->icount.overrun);
+
+ return ret;
+}
+
+int rs_read_proc(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ int i, len = 0, l;
+ off_t begin = 0;
+
+ len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version);
+ for (i = 0; i < NR_PORTS && len < 4000; i++) {
+ l = line_info(page + len, &rs_table[i]);
+ len += l;
+ if (len+begin > off+count)
+ goto done;
+ if (len+begin < off) {
+ begin += len;
+ len = 0;
+ }
+ }
+ *eof = 1;
+done:
+ if (off >= len+begin)
+ return 0;
+ *start = page + (begin-off);
+ return ((count < begin+len-off) ? count : begin+len-off);
+}
+
+/*
+ * ---------------------------------------------------------------------
+ * rs_init() and friends
+ *
+ * rs_init() is called at boot-time to initialize the serial driver.
+ * ---------------------------------------------------------------------
+ */
+
+/*
+ * This routine prints out the appropriate serial driver version
+ * number, and identifies which options were configured into this
+ * driver.
+ */
+static _INLINE_ void show_serial_version(void)
+{
+ printk(KERN_INFO "%s version %s with", serial_name, serial_version);
+#ifdef CONFIG_SERIAL_SHARE_IRQ
+ printk(" SHARE_IRQ");
+#endif
+#define SERIAL_OPT
+#ifdef CONFIG_SERIAL_DETECT_IRQ
+ printk(" DETECT_IRQ");
+#endif
+#ifdef SERIAL_OPT
+ printk(" enabled\n");
+#else
+ printk(" no serial options enabled\n");
+#endif
+#undef SERIAL_OPT
+}
+
+
+/*
+ * This routine is called by rs_init() to initialize a specific serial
+ * port. It determines what type of UART chip this serial port is
+ * using: 8250, 16450, 16550, 16550A. The important question is
+ * whether or not this UART is a 16550A or not, since this will
+ * determine whether or not we can use its FIFO features or not.
+ */
+
+/*
+ * Functionality of this function is reduced: we already know we have a VAC,
+ * but still need to perform some important actions (see code :-).
+ */
+static void autoconfig(struct serial_state * state)
+{
+ struct async_struct *info, scr_info;
+ unsigned long flags;
+
+ /* Setting up important parameters */
+ state->type = VAC_UART_TYPE;
+ state->xmit_fifo_size = uart_config[state->type].dfl_xmit_fifo_size;
+
+ info = &scr_info; /* This is just for serial_{in,out} */
+
+ info->magic = SERIAL_MAGIC;
+ info->port = state->port;
+ info->flags = state->flags;
+
+ save_flags(flags); cli();
+
+ /* + Flush VAC input fifo */
+ (void)serial_in(info, VAC_UART_RX);
+ (void)serial_in(info, VAC_UART_RX);
+ (void)serial_in(info, VAC_UART_RX);
+ (void)serial_in(info, VAC_UART_RX);
+
+ /* Disable interrupts */
+ serial_outp(info, VAC_UART_INT_MASK, 0);
+
+ restore_flags(flags);
+}
+
+int register_serial(struct serial_struct *req);
+void unregister_serial(int line);
+
+EXPORT_SYMBOL(register_serial);
+EXPORT_SYMBOL(unregister_serial);
+
+/*
+ * Important function for VAC UART check and reanimation.
+ */
+
+static void rs_timer(void)
+{
+ static unsigned long last_strobe = 0;
+ struct async_struct *info;
+ unsigned int i;
+ unsigned long flags;
+
+ if ((jiffies - last_strobe) >= RS_STROBE_TIME) {
+ for (i=1; i < NR_IRQS; i++) {
+ info = IRQ_ports[i];
+ if (!info)
+ continue;
+ save_flags(flags); cli();
+#ifdef CONFIG_SERIAL_SHARE_IRQ
+ if (info->next_port) {
+ do {
+ serial_out(info, VAC_UART_INT_MASK, 0);
+ info->IER |= VAC_UART_INT_TX_EMPTY;
+ serial_out(info, VAC_UART_INT_MASK,
+ info->IER);
+ info = info->next_port;
+ } while (info);
+ rs_interrupt(i, NULL, NULL);
+ } else
+#endif /* CONFIG_SERIAL_SHARE_IRQ */
+ rs_interrupt_single(i, NULL, NULL);
+ restore_flags(flags);
+ }
+ }
+ last_strobe = jiffies;
+ timer_table[RS_TIMER].expires = jiffies + RS_STROBE_TIME;
+ timer_active |= 1 << RS_TIMER;
+
+ /*
+ * It looks this code for case we share IRQ with console...
+ */
+
+ if (IRQ_ports[0]) {
+ save_flags(flags); cli();
+#ifdef CONFIG_SERIAL_SHARE_IRQ
+ rs_interrupt(0, NULL, NULL);
+#else
+ rs_interrupt_single(0, NULL, NULL);
+#endif
+ restore_flags(flags);
+
+ timer_table[RS_TIMER].expires = jiffies + IRQ_timeout[0] - 2;
+ }
+}
+
+/*
+ * The serial driver boot-time initialization code!
+ */
+__initfunc(int rs_init(void))
+{
+ int i;
+ struct serial_state * state;
+ extern void atomwide_serial_init (void);
+ extern void dualsp_serial_init (void);
+
+#ifdef CONFIG_ATOMWIDE_SERIAL
+ atomwide_serial_init ();
+#endif
+#ifdef CONFIG_DUALSP_SERIAL
+ dualsp_serial_init ();
+#endif
+
+ init_bh(SERIAL_BH, do_serial_bh);
+ timer_table[RS_TIMER].fn = rs_timer;
+ timer_table[RS_TIMER].expires = 0;
+
+ for (i = 0; i < NR_IRQS; i++) {
+ IRQ_ports[i] = 0;
+ IRQ_timeout[i] = 0;
+ }
+
+
+/*
+ * It is not a good idea to share interrupts with console,
+ * but it looks we cannot avoid it.
+ */
+#if 0
+
+#ifdef CONFIG_SERIAL_CONSOLE
+ /*
+ * The interrupt of the serial console port
+ * can't be shared.
+ */
+ if (sercons.flags & CON_CONSDEV) {
+ for(i = 0; i < NR_PORTS; i++)
+ if (i != sercons.index &&
+ rs_table[i].irq == rs_table[sercons.index].irq)
+ rs_table[i].irq = 0;
+ }
+#endif
+
+#endif
+ show_serial_version();
+
+ /* Initialize the tty_driver structure */
+
+ memset(&serial_driver, 0, sizeof(struct tty_driver));
+ serial_driver.magic = TTY_DRIVER_MAGIC;
+ serial_driver.driver_name = "serial";
+ serial_driver.name = "ttyS";
+ serial_driver.major = TTY_MAJOR;
+ serial_driver.minor_start = 64;
+ serial_driver.num = NR_PORTS;
+ serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
+ serial_driver.subtype = SERIAL_TYPE_NORMAL;
+ serial_driver.init_termios = tty_std_termios;
+ serial_driver.init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ serial_driver.flags = TTY_DRIVER_REAL_RAW;
+ serial_driver.refcount = &serial_refcount;
+ serial_driver.table = serial_table;
+ serial_driver.termios = serial_termios;
+ serial_driver.termios_locked = serial_termios_locked;
+
+ serial_driver.open = rs_open;
+ serial_driver.close = rs_close;
+ serial_driver.write = rs_write;
+ serial_driver.put_char = rs_put_char;
+ serial_driver.flush_chars = rs_flush_chars;
+ serial_driver.write_room = rs_write_room;
+ serial_driver.chars_in_buffer = rs_chars_in_buffer;
+ serial_driver.flush_buffer = rs_flush_buffer;
+ serial_driver.ioctl = rs_ioctl;
+ serial_driver.throttle = rs_throttle;
+ serial_driver.unthrottle = rs_unthrottle;
+ serial_driver.send_xchar = rs_send_xchar;
+ serial_driver.set_termios = rs_set_termios;
+ serial_driver.stop = rs_stop;
+ serial_driver.start = rs_start;
+ serial_driver.hangup = rs_hangup;
+ serial_driver.break_ctl = rs_break;
+ serial_driver.wait_until_sent = rs_wait_until_sent;
+ serial_driver.read_proc = rs_read_proc;
+
+ /*
+ * The callout device is just like normal device except for
+ * major number and the subtype code.
+ */
+ callout_driver = serial_driver;
+ callout_driver.name = "cua";
+ callout_driver.major = TTYAUX_MAJOR;
+ callout_driver.subtype = SERIAL_TYPE_CALLOUT;
+ callout_driver.read_proc = 0;
+ callout_driver.proc_entry = 0;
+
+ if (tty_register_driver(&serial_driver))
+ panic("Couldn't register serial driver\n");
+ if (tty_register_driver(&callout_driver))
+ panic("Couldn't register callout driver\n");
+
+ for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
+ state->magic = SSTATE_MAGIC;
+ state->line = i;
+ state->type = PORT_UNKNOWN;
+ state->custom_divisor = 0;
+ state->close_delay = 5*HZ/10;
+ state->closing_wait = 30*HZ;
+ state->callout_termios = callout_driver.init_termios;
+ state->normal_termios = serial_driver.init_termios;
+ state->icount.cts = state->icount.dsr =
+ state->icount.rng = state->icount.dcd = 0;
+ state->icount.rx = state->icount.tx = 0;
+ state->icount.frame = state->icount.parity = 0;
+ state->icount.overrun = state->icount.brk = 0;
+ state->irq = irq_cannonicalize(state->irq);
+ if (check_region(state->port,8))
+ continue;
+ if (state->flags & ASYNC_BOOT_AUTOCONF)
+ autoconfig(state);
+ }
+
+ /*
+ * Detect the IRQ only once every port is initialised,
+ * because some 16450 do not reset to 0 the MCR register.
+ */
+ for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
+ if (state->type == PORT_UNKNOWN)
+ continue;
+ printk(KERN_INFO "ttyS%02d%s at 0x%04x (irq = %d) is a %s\n",
+ state->line,
+ (state->flags & ASYNC_FOURPORT) ? " FourPort" : "",
+ state->port, state->irq,
+ uart_config[state->type].name);
+ }
+ return 0;
+}
+
+/*
+ * register_serial and unregister_serial allows for serial ports to be
+ * configured at run-time, to support PCMCIA modems.
+ */
+int register_serial(struct serial_struct *req)
+{
+ int i;
+ unsigned long flags;
+ struct serial_state *state;
+
+ save_flags(flags);
+ cli();
+ for (i = 0; i < NR_PORTS; i++) {
+ if (rs_table[i].port == req->port)
+ break;
+ }
+ if (i == NR_PORTS) {
+ for (i = 0; i < NR_PORTS; i++)
+ if ((rs_table[i].type == PORT_UNKNOWN) &&
+ (rs_table[i].count == 0))
+ break;
+ }
+ if (i == NR_PORTS) {
+ restore_flags(flags);
+ return -1;
+ }
+ state = &rs_table[i];
+ if (rs_table[i].count) {
+ restore_flags(flags);
+ printk("Couldn't configure serial #%d (port=%d,irq=%d): "
+ "device already open\n", i, req->port, req->irq);
+ return -1;
+ }
+ state->irq = req->irq;
+ state->port = req->port;
+ state->flags = req->flags;
+
+ autoconfig(state);
+ if (state->type == PORT_UNKNOWN) {
+ restore_flags(flags);
+ printk("register_serial(): autoconfig failed\n");
+ return -1;
+ }
+ restore_flags(flags);
+
+ printk(KERN_INFO "tty%02d at 0x%04x (irq = %d) is a %s\n",
+ state->line, state->port, state->irq,
+ uart_config[state->type].name);
+ return state->line;
+}
+
+void unregister_serial(int line)
+{
+ unsigned long flags;
+ struct serial_state *state = &rs_table[line];
+
+ save_flags(flags);
+ cli();
+ if (state->info && state->info->tty)
+ tty_hangup(state->info->tty);
+ state->type = PORT_UNKNOWN;
+ printk(KERN_INFO "tty%02d unloaded\n", state->line);
+ restore_flags(flags);
+}
+
+#ifdef MODULE
+int init_module(void)
+{
+ return rs_init();
+}
+
+void cleanup_module(void)
+{
+ unsigned long flags;
+ int e1, e2;
+ int i;
+
+ printk("Unloading %s: version %s\n", serial_name, serial_version);
+ save_flags(flags);
+ cli();
+
+ timer_active &= ~(1 << RS_TIMER);
+ timer_table[RS_TIMER].fn = NULL;
+ timer_table[RS_TIMER].expires = 0;
+ remove_bh(SERIAL_BH);
+
+ if ((e1 = tty_unregister_driver(&serial_driver)))
+ printk("SERIAL: failed to unregister serial driver (%d)\n",
+ e1);
+ if ((e2 = tty_unregister_driver(&callout_driver)))
+ printk("SERIAL: failed to unregister callout driver (%d)\n",
+ e2);
+ restore_flags(flags);
+
+ for (i = 0; i < NR_PORTS; i++) {
+ if (rs_table[i].type != PORT_UNKNOWN)
+ release_region(rs_table[i].port, 8);
+ }
+ if (tmp_buf) {
+ free_page((unsigned long) tmp_buf);
+ tmp_buf = NULL;
+ }
+}
+#endif /* MODULE */
+
+
+/*
+ * ------------------------------------------------------------
+ * Serial console driver
+ * ------------------------------------------------------------
+ */
+#ifdef CONFIG_SERIAL_CONSOLE
+
+#define BOTH_EMPTY (VAC_UART_STATUS_TX_EMPTY | VAC_UART_STATUS_TX_EMPTY)
+
+/*
+ * Wait for transmitter & holding register to empty
+ */
+static inline void wait_for_xmitr(struct async_struct *info)
+{
+ int lsr;
+ unsigned int tmout = 1000000;
+
+ do {
+ lsr = serial_inp(info, VAC_UART_INT_STATUS);
+ if (--tmout == 0) break;
+ } while ((lsr & BOTH_EMPTY) != BOTH_EMPTY);
+}
+
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ */
+static void serial_console_write(struct console *co, const char *s,
+ unsigned count)
+{
+ struct serial_state *ser;
+ int ier;
+ unsigned i;
+ struct async_struct scr_info; /* serial_{in,out} because HUB6 */
+
+ ser = rs_table + co->index;
+ scr_info.magic = SERIAL_MAGIC;
+ scr_info.port = ser->port;
+ scr_info.flags = ser->flags;
+
+ /*
+ * First save the IER then disable the interrupts
+ */
+ ier = serial_inp(&scr_info, VAC_UART_INT_MASK);
+ serial_outw(&scr_info, VAC_UART_INT_MASK, 0x00);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++, s++) {
+ wait_for_xmitr(&scr_info);
+
+ /*
+ * Send the character out.
+ * If a LF, also do CR...
+ */
+ serial_outp(&scr_info, VAC_UART_TX, (unsigned short)*s << 8);
+ if (*s == 10) {
+ wait_for_xmitr(&scr_info);
+ serial_outp(&scr_info, VAC_UART_TX, 13 << 8);
+ }
+ }
+
+ /*
+ * Finally, Wait for transmitter & holding register to empty
+ * and restore the IER
+ */
+ wait_for_xmitr(&scr_info);
+ serial_outp(&scr_info, VAC_UART_INT_MASK, ier);
+}
+
+/*
+ * Receive character from the serial port
+ */
+static int serial_console_wait_key(struct console *co)
+{
+ struct serial_state *ser;
+ int ier;
+ int lsr;
+ int c;
+ struct async_struct scr_info; /* serial_{in,out} because HUB6 */
+
+ ser = rs_table + co->index;
+ scr_info.magic = SERIAL_MAGIC;
+ scr_info.port = ser->port;
+ scr_info.flags = ser->flags;
+
+ /*
+ * First save the IER then disable the interrupts so
+ * that the real driver for the port does not get the
+ * character.
+ */
+ ier = serial_inp(&scr_info, VAC_UART_INT_MASK);
+ serial_outp(&scr_info, VAC_UART_INT_MASK, 0x00);
+
+ do {
+ lsr = serial_inp(&scr_info, VAC_UART_INT_STATUS);
+ } while (!(lsr & VAC_UART_STATUS_RX_READY));
+ c = serial_inp(&scr_info, VAC_UART_RX);
+
+ /*
+ * Restore the interrupts
+ */
+ serial_outp(&scr_info, VAC_UART_INT_MASK, ier);
+
+ return c;
+}
+
+static kdev_t serial_console_device(struct console *c)
+{
+ return MKDEV(TTY_MAJOR, 64 + c->index);
+}
+
+/*
+ * Setup initial baud/bits/parity. We do two things here:
+ * - construct a cflag setting for the first rs_open()
+ * - initialize the serial port
+ * Return non-zero if we didn't find a serial port.
+ */
+__initfunc(static int serial_console_setup(struct console *co, char *options))
+{
+ struct serial_state *ser;
+ unsigned cval;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int cflag = CREAD | HUPCL | CLOCAL;
+ int quot = 0;
+ char *s;
+ struct async_struct scr_info; /* serial_{in,out} because HUB6 */
+
+ if (options) {
+ baud = simple_strtoul(options, NULL, 10);
+ s = options;
+ while(*s >= '0' && *s <= '9')
+ s++;
+ if (*s) parity = *s++;
+ if (*s) bits = *s - '0';
+ }
+
+ /*
+ * Now construct a cflag setting.
+ */
+ switch(baud) {
+ case 1200:
+ cflag |= B1200;
+ break;
+ case 2400:
+ cflag |= B2400;
+ break;
+ case 4800:
+ cflag |= B4800;
+ break;
+ case 19200:
+ cflag |= B19200;
+ break;
+ case 38400:
+ cflag |= B38400;
+ break;
+ case 57600:
+ cflag |= B57600;
+ break;
+ case 115200:
+ cflag |= B115200;
+ break;
+ case 9600:
+ default:
+ cflag |= B9600;
+ break;
+ }
+ switch(bits) {
+ case 7:
+ cflag |= CS7;
+ break;
+ default:
+ case 8:
+ cflag |= CS8;
+ break;
+ }
+ switch(parity) {
+ case 'o': case 'O':
+ cflag |= PARODD;
+ break;
+ case 'e': case 'E':
+ cflag |= PARENB;
+ break;
+ }
+ co->cflag = cflag;
+
+ /*
+ * Divisor, bytesize and parity
+ */
+ ser = rs_table + co->index;
+ scr_info.magic = SERIAL_MAGIC;
+ scr_info.port = ser->port;
+ scr_info.flags = ser->flags;
+
+ quot = ser->baud_base / baud;
+ cval = cflag & (CSIZE | CSTOPB);
+
+ cval >>= 4;
+
+ cval &= ~VAC_UART_MODE_PARITY_ENABLE;
+ if (cflag & PARENB)
+ cval |= VAC_UART_MODE_PARITY_ENABLE;
+ if (cflag & PARODD)
+ cval |= VAC_UART_MODE_PARITY_ODD;
+
+ /*
+ * Disable UART interrupts, set DTR and RTS high
+ * and set speed.
+ */
+ switch (baud) {
+ default:
+ case 9600:
+ cval |= VAC_UART_MODE_BAUD(7);
+ break;
+ case 4800:
+ cval |= VAC_UART_MODE_BAUD(6);
+ break;
+ case 2400:
+ cval |= VAC_UART_MODE_BAUD(5);
+ break;
+ case 1200:
+ cval |= VAC_UART_MODE_BAUD(4);
+ break;
+ case 600:
+ cval |= VAC_UART_MODE_BAUD(3);
+ break;
+ case 300:
+ cval |= VAC_UART_MODE_BAUD(2);
+ break;
+#ifndef QUAD_UART_SPEED
+ case 150:
+#else
+ case 38400:
+#endif
+ cval |= VAC_UART_MODE_BAUD(1);
+ break;
+#ifndef QUAD_UART_SPEED
+ case 75:
+#else
+ case 19200:
+#endif
+ cval |= VAC_UART_MODE_BAUD(0);
+ break;
+ }
+
+ /* Baget VAC need some adjustments for computed value */
+ cval = vac_uart_mode_fixup(cval);
+
+ serial_outp(&scr_info, VAC_UART_MODE, cval);
+ serial_outp(&scr_info, VAC_UART_INT_MASK, 0);
+
+ return 0;
+}
+
+static struct console sercons = {
+ "ttyS",
+ serial_console_write,
+ NULL,
+ serial_console_device,
+ serial_console_wait_key,
+ NULL,
+ serial_console_setup,
+ CON_PRINTBUFFER,
+ -1,
+ 0,
+ NULL
+};
+
+/*
+ * Register console.
+ */
+__initfunc (long serial_console_init(long kmem_start, long kmem_end))
+{
+ register_console(&sercons);
+ return kmem_start;
+}
+#endif
+
+#ifdef CONFIG_REMOTE_DEBUG
+#undef PRINT_DEBUG_PORT_INFO
+
+/*
+ * This is the interface to the remote debugger stub.
+ * I've put that here to be able to control the serial
+ * device more directly.
+ */
+
+static int initialized = 0;
+
+static int rs_debug_init(struct async_struct *info)
+{
+ int quot;
+
+ autoconfig(info); /* autoconfigure ttyS0, whatever that is */
+
+#ifdef PRINT_DEBUG_PORT_INFO
+ baget_printk("kgdb debug interface:: tty%02d at 0x%04x",
+ info->line, info->port);
+ switch (info->type) {
+ case PORT_8250:
+ baget_printk(" is a 8250\n");
+ break;
+ case PORT_16450:
+ baget_printk(" is a 16450\n");
+ break;
+ case PORT_16550:
+ baget_printk(" is a 16550\n");
+ break;
+ case PORT_16550A:
+ baget_printk(" is a 16550A\n");
+ break;
+ case PORT_16650:
+ baget_printk(" is a 16650\n");
+ break;
+ default:
+ baget_printk(" is of unknown type -- unusable\n");
+ break;
+ }
+#endif
+
+ if (info->port == PORT_UNKNOWN)
+ return -1;
+
+ /*
+ * Clear all interrupts
+ */
+
+ (void)serial_inp(info, VAC_UART_INT_STATUS);
+ (void)serial_inp(info, VAC_UART_RX);
+
+ /*
+ * Now, initialize the UART
+ */
+ serial_outp(info,VAC_UART_MODE,VAC_UART_MODE_INITIAL); /* reset DLAB */
+ if (info->flags & ASYNC_FOURPORT) {
+ info->MCR = UART_MCR_DTR | UART_MCR_RTS;
+ info->MCR_noint = UART_MCR_DTR | UART_MCR_OUT1;
+ } else {
+ info->MCR = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
+ info->MCR_noint = UART_MCR_DTR | UART_MCR_RTS;
+ }
+
+ info->MCR = info->MCR_noint; /* no interrupts, please */
+ /*
+ * and set the speed of the serial port
+ * (currently hardwired to 9600 8N1
+ */
+
+ quot = info->baud_base / 9600; /* baud rate is fixed to 9600 */
+ /* FIXME: if rs_debug interface is needed, we need to set speed here */
+
+ return 0;
+}
+
+int putDebugChar(char c)
+{
+ struct async_struct *info = rs_table;
+
+ if (!initialized) { /* need to init device first */
+ if (rs_debug_init(info) == 0)
+ initialized = 1;
+ else
+ return 0;
+ }
+
+ while ((serial_inw(info, VAC_UART_INT_STATUS) & \
+ VAC_UART_STATUS_TX_EMPTY) == 0)
+ ;
+ serial_out(info, VAC_UART_TX, (unsigned short)c << 8);
+
+ return 1;
+}
+
+char getDebugChar(void)
+{
+ struct async_struct *info = rs_table;
+
+ if (!initialized) { /* need to init device first */
+ if (rs_debug_init(info) == 0)
+ initialized = 1;
+ else
+ return 0;
+ }
+ while (!(serial_inw(info, VAC_UART_INT_STATUS) & \
+ VAC_UART_STATUS_RX_READY))
+ ;
+
+ return(serial_inp(info, VAC_UART_RX));
+}
+
+#endif /* CONFIG_REMOTE_DEBUG */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 02:40:45 +0000