root/arch/parisc/kernel/pa7300lc.c

DEFINITIONS

1. cpu_hpa
2. pa7300lc_lpmc
3. pa7300lc_init

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *   linux/arch/parisc/kernel/pa7300lc.c
   4  *      - PA7300LC-specific functions   
   5  *
   6  *   Copyright (C) 2000 Philipp Rumpf */
   7 
   8 #include <linux/sched.h>
   9 #include <linux/sched/debug.h>
  10 #include <linux/smp.h>
  11 #include <linux/kernel.h>
  12 #include <asm/io.h>
  13 #include <asm/ptrace.h>
  14 #include <asm/machdep.h>
  15 
  16 /* CPU register indices */
  17 
  18 #define MIOC_STATUS     0xf040
  19 #define MIOC_CONTROL    0xf080
  20 #define MDERRADD        0xf0e0
  21 #define DMAERR          0xf0e8
  22 #define DIOERR          0xf0ec
  23 #define HIDMAMEM        0xf0f4
  24 
  25 /* this returns the HPA of the CPU it was called on */
  26 static u32 cpu_hpa(void)
  27 {
  28         return 0xfffb0000;
  29 }
  30 
  31 static void pa7300lc_lpmc(int code, struct pt_regs *regs)
  32 {
  33         u32 hpa;
  34         printk(KERN_WARNING "LPMC on CPU %d\n", smp_processor_id());
  35 
  36         show_regs(regs);
  37 
  38         hpa = cpu_hpa();
  39         printk(KERN_WARNING
  40                 "MIOC_CONTROL %08x\n" "MIOC_STATUS  %08x\n"
  41                 "MDERRADD     %08x\n" "DMAERR       %08x\n"
  42                 "DIOERR       %08x\n" "HIDMAMEM     %08x\n",
  43                 gsc_readl(hpa+MIOC_CONTROL), gsc_readl(hpa+MIOC_STATUS),
  44                 gsc_readl(hpa+MDERRADD), gsc_readl(hpa+DMAERR),
  45                 gsc_readl(hpa+DIOERR), gsc_readl(hpa+HIDMAMEM));
  46 }
  47 
  48 void pa7300lc_init(void)
  49 {
  50         cpu_lpmc = pa7300lc_lpmc;
  51 }