OpenCloudOS-Kernel/arch/mips/dec/setup.c

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/*
* System-specific setup, especially interrupts.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1998 Harald Koerfgen
MIPS: DEC: Restore bootmem reservation for firmware working memory area Fix a crash on DEC platforms starting with: VFS: Mounted root (nfs filesystem) on device 0:11. Freeing unused PROM memory: 124k freed BUG: Bad page state in process swapper pfn:00001 page:(ptrval) refcount:0 mapcount:-128 mapping:00000000 index:0x1 pfn:0x1 flags: 0x0() raw: 00000000 00000100 00000122 00000000 00000001 00000000 ffffff7f 00000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-00858-g865c50e1d279 #1 Stack : 8065dc48 0000000b 8065d2b8 9bc27dcc 80645bfc 9bc259a4 806a1b97 80703124 80710000 8064a900 00000001 80099574 806b116c 1000ec00 9bc27d88 806a6f30 00000000 00000000 80645bfc 00000000 31232039 80706ba4 2e392e35 8039f348 2d383538 00000070 0000000a 35363867 00000000 806c2830 80710000 806b0000 80710000 8064a900 00000001 81000000 00000000 00000000 8035af2c 80700000 ... Call Trace: [<8004bc5c>] show_stack+0x34/0x104 [<8015675c>] bad_page+0xfc/0x128 [<80157714>] free_pcppages_bulk+0x1f4/0x5dc [<801591cc>] free_unref_page+0xc0/0x130 [<8015cb04>] free_reserved_area+0x144/0x1d8 [<805abd78>] kernel_init+0x20/0x100 [<80046070>] ret_from_kernel_thread+0x14/0x1c Disabling lock debugging due to kernel taint caused by an attempt to free bootmem space that as from commit b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") has not been anymore reserved due to the removal of generic MIPS arch code that used to reserve all the memory from the beginning of RAM up to the kernel load address. This memory does need to be reserved on DEC platforms however as it is used by REX firmware as working area, as per the TURBOchannel firmware specification[1]: Table 2-2 REX Memory Regions ------------------------------------------------------------------------- Starting Ending Region Address Address Use ------------------------------------------------------------------------- 0 0xa0000000 0xa000ffff Restart block, exception vectors, REX stack and bss 1 0xa0010000 0xa0017fff Keyboard or tty drivers 2 0xa0018000 0xa001f3ff 1) CRT driver 3 0xa0020000 0xa002ffff boot, cnfg, init and t objects 4 0xa0020000 0xa002ffff 64KB scratch space ------------------------------------------------------------------------- 1) Note that the last 3 Kbytes of region 2 are reserved for backward compatibility with previous system software. ------------------------------------------------------------------------- (this table uses KSEG2 unmapped virtual addresses, which in the MIPS architecture are offset from physical addresses by a fixed value of 0xa0000000 and therefore the regions referred do correspond to the beginning of the physical address space) and we call into the firmware on several occasions throughout the bootstrap process. It is believed that pre-REX firmware used with non-TURBOchannel DEC platforms has the same requirements, as hinted by note #1 cited. Recreate the discarded reservation then, in DEC platform code, removing the crash. References: [1] "TURBOchannel Firmware Specification", On-line version, EK-TCAAD-FS-004, Digital Equipment Corporation, January 1993, Chapter 2 "System Module Firmware", p. 2-5 Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Fixes: b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-15 05:34:56 +08:00
* Copyright (C) 2000, 2001, 2002, 2003, 2005, 2020 Maciej W. Rozycki
*/
#include <linux/console.h>
MIPS: Audit and remove any unnecessary uses of module.h Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. In the case of some code where it is modular, we can extend that to also include files that are building basic support functionality but not related to loading or registering the final module; such files also have no need whatsoever for module.h The advantage in removing such instances is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h might have been the implicit source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each instance for the presence of either and replace/add as needed. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. Build coverage of all the mips defconfigs revealed the module.h header was masking a couple of implicit include instances, so we add the appropriate headers there. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Daney <david.daney@cavium.com> Cc: John Crispin <john@phrozen.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Steven J. Hill" <steven.hill@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15131/ [james.hogan@imgtec.com: Preserve sort order where it already exists] Signed-off-by: James Hogan <james.hogan@imgtec.com>
2017-01-29 10:05:57 +08:00
#include <linux/export.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/irq.h>
#include <linux/irqnr.h>
MIPS: DEC: Restore bootmem reservation for firmware working memory area Fix a crash on DEC platforms starting with: VFS: Mounted root (nfs filesystem) on device 0:11. Freeing unused PROM memory: 124k freed BUG: Bad page state in process swapper pfn:00001 page:(ptrval) refcount:0 mapcount:-128 mapping:00000000 index:0x1 pfn:0x1 flags: 0x0() raw: 00000000 00000100 00000122 00000000 00000001 00000000 ffffff7f 00000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-00858-g865c50e1d279 #1 Stack : 8065dc48 0000000b 8065d2b8 9bc27dcc 80645bfc 9bc259a4 806a1b97 80703124 80710000 8064a900 00000001 80099574 806b116c 1000ec00 9bc27d88 806a6f30 00000000 00000000 80645bfc 00000000 31232039 80706ba4 2e392e35 8039f348 2d383538 00000070 0000000a 35363867 00000000 806c2830 80710000 806b0000 80710000 8064a900 00000001 81000000 00000000 00000000 8035af2c 80700000 ... Call Trace: [<8004bc5c>] show_stack+0x34/0x104 [<8015675c>] bad_page+0xfc/0x128 [<80157714>] free_pcppages_bulk+0x1f4/0x5dc [<801591cc>] free_unref_page+0xc0/0x130 [<8015cb04>] free_reserved_area+0x144/0x1d8 [<805abd78>] kernel_init+0x20/0x100 [<80046070>] ret_from_kernel_thread+0x14/0x1c Disabling lock debugging due to kernel taint caused by an attempt to free bootmem space that as from commit b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") has not been anymore reserved due to the removal of generic MIPS arch code that used to reserve all the memory from the beginning of RAM up to the kernel load address. This memory does need to be reserved on DEC platforms however as it is used by REX firmware as working area, as per the TURBOchannel firmware specification[1]: Table 2-2 REX Memory Regions ------------------------------------------------------------------------- Starting Ending Region Address Address Use ------------------------------------------------------------------------- 0 0xa0000000 0xa000ffff Restart block, exception vectors, REX stack and bss 1 0xa0010000 0xa0017fff Keyboard or tty drivers 2 0xa0018000 0xa001f3ff 1) CRT driver 3 0xa0020000 0xa002ffff boot, cnfg, init and t objects 4 0xa0020000 0xa002ffff 64KB scratch space ------------------------------------------------------------------------- 1) Note that the last 3 Kbytes of region 2 are reserved for backward compatibility with previous system software. ------------------------------------------------------------------------- (this table uses KSEG2 unmapped virtual addresses, which in the MIPS architecture are offset from physical addresses by a fixed value of 0xa0000000 and therefore the regions referred do correspond to the beginning of the physical address space) and we call into the firmware on several occasions throughout the bootstrap process. It is believed that pre-REX firmware used with non-TURBOchannel DEC platforms has the same requirements, as hinted by note #1 cited. Recreate the discarded reservation then, in DEC platform code, removing the crash. References: [1] "TURBOchannel Firmware Specification", On-line version, EK-TCAAD-FS-004, Digital Equipment Corporation, January 1993, Chapter 2 "System Module Firmware", p. 2-5 Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Fixes: b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-15 05:34:56 +08:00
#include <linux/memblock.h>
#include <linux/param.h>
#include <linux/percpu-defs.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/pm.h>
MIPS: DEC: Restore bootmem reservation for firmware working memory area Fix a crash on DEC platforms starting with: VFS: Mounted root (nfs filesystem) on device 0:11. Freeing unused PROM memory: 124k freed BUG: Bad page state in process swapper pfn:00001 page:(ptrval) refcount:0 mapcount:-128 mapping:00000000 index:0x1 pfn:0x1 flags: 0x0() raw: 00000000 00000100 00000122 00000000 00000001 00000000 ffffff7f 00000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-00858-g865c50e1d279 #1 Stack : 8065dc48 0000000b 8065d2b8 9bc27dcc 80645bfc 9bc259a4 806a1b97 80703124 80710000 8064a900 00000001 80099574 806b116c 1000ec00 9bc27d88 806a6f30 00000000 00000000 80645bfc 00000000 31232039 80706ba4 2e392e35 8039f348 2d383538 00000070 0000000a 35363867 00000000 806c2830 80710000 806b0000 80710000 8064a900 00000001 81000000 00000000 00000000 8035af2c 80700000 ... Call Trace: [<8004bc5c>] show_stack+0x34/0x104 [<8015675c>] bad_page+0xfc/0x128 [<80157714>] free_pcppages_bulk+0x1f4/0x5dc [<801591cc>] free_unref_page+0xc0/0x130 [<8015cb04>] free_reserved_area+0x144/0x1d8 [<805abd78>] kernel_init+0x20/0x100 [<80046070>] ret_from_kernel_thread+0x14/0x1c Disabling lock debugging due to kernel taint caused by an attempt to free bootmem space that as from commit b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") has not been anymore reserved due to the removal of generic MIPS arch code that used to reserve all the memory from the beginning of RAM up to the kernel load address. This memory does need to be reserved on DEC platforms however as it is used by REX firmware as working area, as per the TURBOchannel firmware specification[1]: Table 2-2 REX Memory Regions ------------------------------------------------------------------------- Starting Ending Region Address Address Use ------------------------------------------------------------------------- 0 0xa0000000 0xa000ffff Restart block, exception vectors, REX stack and bss 1 0xa0010000 0xa0017fff Keyboard or tty drivers 2 0xa0018000 0xa001f3ff 1) CRT driver 3 0xa0020000 0xa002ffff boot, cnfg, init and t objects 4 0xa0020000 0xa002ffff 64KB scratch space ------------------------------------------------------------------------- 1) Note that the last 3 Kbytes of region 2 are reserved for backward compatibility with previous system software. ------------------------------------------------------------------------- (this table uses KSEG2 unmapped virtual addresses, which in the MIPS architecture are offset from physical addresses by a fixed value of 0xa0000000 and therefore the regions referred do correspond to the beginning of the physical address space) and we call into the firmware on several occasions throughout the bootstrap process. It is believed that pre-REX firmware used with non-TURBOchannel DEC platforms has the same requirements, as hinted by note #1 cited. Recreate the discarded reservation then, in DEC platform code, removing the crash. References: [1] "TURBOchannel Firmware Specification", On-line version, EK-TCAAD-FS-004, Digital Equipment Corporation, January 1993, Chapter 2 "System Module Firmware", p. 2-5 Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Fixes: b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-15 05:34:56 +08:00
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/cpu-features.h>
#include <asm/cpu-type.h>
#include <asm/irq.h>
#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
MIPS: DEC: Restore bootmem reservation for firmware working memory area Fix a crash on DEC platforms starting with: VFS: Mounted root (nfs filesystem) on device 0:11. Freeing unused PROM memory: 124k freed BUG: Bad page state in process swapper pfn:00001 page:(ptrval) refcount:0 mapcount:-128 mapping:00000000 index:0x1 pfn:0x1 flags: 0x0() raw: 00000000 00000100 00000122 00000000 00000001 00000000 ffffff7f 00000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-00858-g865c50e1d279 #1 Stack : 8065dc48 0000000b 8065d2b8 9bc27dcc 80645bfc 9bc259a4 806a1b97 80703124 80710000 8064a900 00000001 80099574 806b116c 1000ec00 9bc27d88 806a6f30 00000000 00000000 80645bfc 00000000 31232039 80706ba4 2e392e35 8039f348 2d383538 00000070 0000000a 35363867 00000000 806c2830 80710000 806b0000 80710000 8064a900 00000001 81000000 00000000 00000000 8035af2c 80700000 ... Call Trace: [<8004bc5c>] show_stack+0x34/0x104 [<8015675c>] bad_page+0xfc/0x128 [<80157714>] free_pcppages_bulk+0x1f4/0x5dc [<801591cc>] free_unref_page+0xc0/0x130 [<8015cb04>] free_reserved_area+0x144/0x1d8 [<805abd78>] kernel_init+0x20/0x100 [<80046070>] ret_from_kernel_thread+0x14/0x1c Disabling lock debugging due to kernel taint caused by an attempt to free bootmem space that as from commit b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") has not been anymore reserved due to the removal of generic MIPS arch code that used to reserve all the memory from the beginning of RAM up to the kernel load address. This memory does need to be reserved on DEC platforms however as it is used by REX firmware as working area, as per the TURBOchannel firmware specification[1]: Table 2-2 REX Memory Regions ------------------------------------------------------------------------- Starting Ending Region Address Address Use ------------------------------------------------------------------------- 0 0xa0000000 0xa000ffff Restart block, exception vectors, REX stack and bss 1 0xa0010000 0xa0017fff Keyboard or tty drivers 2 0xa0018000 0xa001f3ff 1) CRT driver 3 0xa0020000 0xa002ffff boot, cnfg, init and t objects 4 0xa0020000 0xa002ffff 64KB scratch space ------------------------------------------------------------------------- 1) Note that the last 3 Kbytes of region 2 are reserved for backward compatibility with previous system software. ------------------------------------------------------------------------- (this table uses KSEG2 unmapped virtual addresses, which in the MIPS architecture are offset from physical addresses by a fixed value of 0xa0000000 and therefore the regions referred do correspond to the beginning of the physical address space) and we call into the firmware on several occasions throughout the bootstrap process. It is believed that pre-REX firmware used with non-TURBOchannel DEC platforms has the same requirements, as hinted by note #1 cited. Recreate the discarded reservation then, in DEC platform code, removing the crash. References: [1] "TURBOchannel Firmware Specification", On-line version, EK-TCAAD-FS-004, Digital Equipment Corporation, January 1993, Chapter 2 "System Module Firmware", p. 2-5 Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Fixes: b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-15 05:34:56 +08:00
#include <asm/page.h>
#include <asm/reboot.h>
MIPS: DEC: Restore bootmem reservation for firmware working memory area Fix a crash on DEC platforms starting with: VFS: Mounted root (nfs filesystem) on device 0:11. Freeing unused PROM memory: 124k freed BUG: Bad page state in process swapper pfn:00001 page:(ptrval) refcount:0 mapcount:-128 mapping:00000000 index:0x1 pfn:0x1 flags: 0x0() raw: 00000000 00000100 00000122 00000000 00000001 00000000 ffffff7f 00000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-00858-g865c50e1d279 #1 Stack : 8065dc48 0000000b 8065d2b8 9bc27dcc 80645bfc 9bc259a4 806a1b97 80703124 80710000 8064a900 00000001 80099574 806b116c 1000ec00 9bc27d88 806a6f30 00000000 00000000 80645bfc 00000000 31232039 80706ba4 2e392e35 8039f348 2d383538 00000070 0000000a 35363867 00000000 806c2830 80710000 806b0000 80710000 8064a900 00000001 81000000 00000000 00000000 8035af2c 80700000 ... Call Trace: [<8004bc5c>] show_stack+0x34/0x104 [<8015675c>] bad_page+0xfc/0x128 [<80157714>] free_pcppages_bulk+0x1f4/0x5dc [<801591cc>] free_unref_page+0xc0/0x130 [<8015cb04>] free_reserved_area+0x144/0x1d8 [<805abd78>] kernel_init+0x20/0x100 [<80046070>] ret_from_kernel_thread+0x14/0x1c Disabling lock debugging due to kernel taint caused by an attempt to free bootmem space that as from commit b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") has not been anymore reserved due to the removal of generic MIPS arch code that used to reserve all the memory from the beginning of RAM up to the kernel load address. This memory does need to be reserved on DEC platforms however as it is used by REX firmware as working area, as per the TURBOchannel firmware specification[1]: Table 2-2 REX Memory Regions ------------------------------------------------------------------------- Starting Ending Region Address Address Use ------------------------------------------------------------------------- 0 0xa0000000 0xa000ffff Restart block, exception vectors, REX stack and bss 1 0xa0010000 0xa0017fff Keyboard or tty drivers 2 0xa0018000 0xa001f3ff 1) CRT driver 3 0xa0020000 0xa002ffff boot, cnfg, init and t objects 4 0xa0020000 0xa002ffff 64KB scratch space ------------------------------------------------------------------------- 1) Note that the last 3 Kbytes of region 2 are reserved for backward compatibility with previous system software. ------------------------------------------------------------------------- (this table uses KSEG2 unmapped virtual addresses, which in the MIPS architecture are offset from physical addresses by a fixed value of 0xa0000000 and therefore the regions referred do correspond to the beginning of the physical address space) and we call into the firmware on several occasions throughout the bootstrap process. It is believed that pre-REX firmware used with non-TURBOchannel DEC platforms has the same requirements, as hinted by note #1 cited. Recreate the discarded reservation then, in DEC platform code, removing the crash. References: [1] "TURBOchannel Firmware Specification", On-line version, EK-TCAAD-FS-004, Digital Equipment Corporation, January 1993, Chapter 2 "System Module Firmware", p. 2-5 Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Fixes: b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-15 05:34:56 +08:00
#include <asm/sections.h>
#include <asm/time.h>
#include <asm/traps.h>
#include <asm/wbflush.h>
#include <asm/dec/interrupts.h>
#include <asm/dec/ioasic.h>
#include <asm/dec/ioasic_addrs.h>
#include <asm/dec/ioasic_ints.h>
#include <asm/dec/kn01.h>
#include <asm/dec/kn02.h>
#include <asm/dec/kn02ba.h>
#include <asm/dec/kn02ca.h>
#include <asm/dec/kn03.h>
#include <asm/dec/kn230.h>
#include <asm/dec/system.h>
extern void dec_machine_restart(char *command);
extern void dec_machine_halt(void);
extern void dec_machine_power_off(void);
extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
unsigned long dec_kn_slot_base, dec_kn_slot_size;
EXPORT_SYMBOL(dec_kn_slot_base);
EXPORT_SYMBOL(dec_kn_slot_size);
int dec_tc_bus;
DEFINE_SPINLOCK(ioasic_ssr_lock);
EXPORT_SYMBOL(ioasic_ssr_lock);
volatile u32 *ioasic_base;
EXPORT_SYMBOL(ioasic_base);
/*
* IRQ routing and priority tables. Priorities are set as follows:
*
* KN01 KN230 KN02 KN02-BA KN02-CA KN03
*
* MEMORY CPU CPU CPU ASIC CPU CPU
* RTC CPU CPU CPU ASIC CPU CPU
* DMA - - - ASIC ASIC ASIC
* SERIAL0 CPU CPU CSR ASIC ASIC ASIC
* SERIAL1 - - - ASIC - ASIC
* SCSI CPU CPU CSR ASIC ASIC ASIC
* ETHERNET CPU * CSR ASIC ASIC ASIC
* other - - - ASIC - -
* TC2 - - CSR CPU ASIC ASIC
* TC1 - - CSR CPU ASIC ASIC
* TC0 - - CSR CPU ASIC ASIC
* other - CPU - CPU ASIC ASIC
* other - - - - CPU CPU
*
* * -- shared with SCSI
*/
int dec_interrupt[DEC_NR_INTS] = {
[0 ... DEC_NR_INTS - 1] = -1
};
EXPORT_SYMBOL(dec_interrupt);
int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2] = {
{ { .i = ~0 }, { .p = dec_intr_unimplemented } },
};
int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2] = {
{ { .i = ~0 }, { .p = asic_intr_unimplemented } },
};
int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_CPU_INR_FPU);
int *fpu_kstat_irq;
static irq_handler_t busirq_handler;
static unsigned int busirq_flags = IRQF_NO_THREAD;
/*
* Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
*/
static void __init dec_be_init(void)
{
switch (mips_machtype) {
case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
mips_set_be_handler(dec_kn01_be_handler);
busirq_handler = dec_kn01_be_interrupt;
busirq_flags |= IRQF_SHARED;
dec_kn01_be_init();
break;
case MACH_DS5000_1XX: /* DS5000/1xx 3min */
case MACH_DS5000_XX: /* DS5000/xx Maxine */
mips_set_be_handler(dec_kn02xa_be_handler);
busirq_handler = dec_kn02xa_be_interrupt;
dec_kn02xa_be_init();
break;
case MACH_DS5000_200: /* DS5000/200 3max */
case MACH_DS5000_2X0: /* DS5000/240 3max+ */
case MACH_DS5900: /* DS5900 bigmax */
mips_set_be_handler(dec_ecc_be_handler);
busirq_handler = dec_ecc_be_interrupt;
dec_ecc_be_init();
break;
}
}
void __init plat_mem_setup(void)
{
board_be_init = dec_be_init;
wbflush_setup();
_machine_restart = dec_machine_restart;
_machine_halt = dec_machine_halt;
pm_power_off = dec_machine_power_off;
ioport_resource.start = ~0UL;
ioport_resource.end = 0UL;
MIPS: DEC: Restore bootmem reservation for firmware working memory area Fix a crash on DEC platforms starting with: VFS: Mounted root (nfs filesystem) on device 0:11. Freeing unused PROM memory: 124k freed BUG: Bad page state in process swapper pfn:00001 page:(ptrval) refcount:0 mapcount:-128 mapping:00000000 index:0x1 pfn:0x1 flags: 0x0() raw: 00000000 00000100 00000122 00000000 00000001 00000000 ffffff7f 00000000 page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-00858-g865c50e1d279 #1 Stack : 8065dc48 0000000b 8065d2b8 9bc27dcc 80645bfc 9bc259a4 806a1b97 80703124 80710000 8064a900 00000001 80099574 806b116c 1000ec00 9bc27d88 806a6f30 00000000 00000000 80645bfc 00000000 31232039 80706ba4 2e392e35 8039f348 2d383538 00000070 0000000a 35363867 00000000 806c2830 80710000 806b0000 80710000 8064a900 00000001 81000000 00000000 00000000 8035af2c 80700000 ... Call Trace: [<8004bc5c>] show_stack+0x34/0x104 [<8015675c>] bad_page+0xfc/0x128 [<80157714>] free_pcppages_bulk+0x1f4/0x5dc [<801591cc>] free_unref_page+0xc0/0x130 [<8015cb04>] free_reserved_area+0x144/0x1d8 [<805abd78>] kernel_init+0x20/0x100 [<80046070>] ret_from_kernel_thread+0x14/0x1c Disabling lock debugging due to kernel taint caused by an attempt to free bootmem space that as from commit b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") has not been anymore reserved due to the removal of generic MIPS arch code that used to reserve all the memory from the beginning of RAM up to the kernel load address. This memory does need to be reserved on DEC platforms however as it is used by REX firmware as working area, as per the TURBOchannel firmware specification[1]: Table 2-2 REX Memory Regions ------------------------------------------------------------------------- Starting Ending Region Address Address Use ------------------------------------------------------------------------- 0 0xa0000000 0xa000ffff Restart block, exception vectors, REX stack and bss 1 0xa0010000 0xa0017fff Keyboard or tty drivers 2 0xa0018000 0xa001f3ff 1) CRT driver 3 0xa0020000 0xa002ffff boot, cnfg, init and t objects 4 0xa0020000 0xa002ffff 64KB scratch space ------------------------------------------------------------------------- 1) Note that the last 3 Kbytes of region 2 are reserved for backward compatibility with previous system software. ------------------------------------------------------------------------- (this table uses KSEG2 unmapped virtual addresses, which in the MIPS architecture are offset from physical addresses by a fixed value of 0xa0000000 and therefore the regions referred do correspond to the beginning of the physical address space) and we call into the firmware on several occasions throughout the bootstrap process. It is believed that pre-REX firmware used with non-TURBOchannel DEC platforms has the same requirements, as hinted by note #1 cited. Recreate the discarded reservation then, in DEC platform code, removing the crash. References: [1] "TURBOchannel Firmware Specification", On-line version, EK-TCAAD-FS-004, Digital Equipment Corporation, January 1993, Chapter 2 "System Module Firmware", p. 2-5 Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Fixes: b93ddc4f9156 ("mips: Reserve memory for the kernel image resources") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-15 05:34:56 +08:00
/* Stay away from the firmware working memory area for now. */
memblock_reserve(PHYS_OFFSET, __pa_symbol(&_text) - PHYS_OFFSET);
}
/*
* Machine-specific initialisation for KN01, aka DS2100 (aka Pmin)
* or DS3100 (aka Pmax).
*/
static int kn01_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = -1,
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11),
[DEC_IRQ_ASC] = -1,
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = -1,
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC),
[DEC_IRQ_SCC0] = -1,
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII),
[DEC_IRQ_TC0] = -1,
[DEC_IRQ_TC1] = -1,
[DEC_IRQ_TC2] = -1,
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = DEC_CPU_IRQ_NR(KN01_CPU_INR_VIDEO),
[DEC_IRQ_ASC_MERR] = -1,
[DEC_IRQ_ASC_ERR] = -1,
[DEC_IRQ_ASC_DMA] = -1,
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = -1,
[DEC_IRQ_SCC0A_RXERR] = -1,
[DEC_IRQ_SCC0A_RXDMA] = -1,
[DEC_IRQ_SCC0A_TXERR] = -1,
[DEC_IRQ_SCC0A_TXDMA] = -1,
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_DZ11) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_SII) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII) } },
{ { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_LANCE) },
{ .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE) } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static void __init dec_init_kn01(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn01_interrupt,
sizeof(kn01_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn01_cpu_mask_nr_tbl,
sizeof(kn01_cpu_mask_nr_tbl));
mips_cpu_irq_init();
} /* dec_init_kn01 */
/*
* Machine-specific initialisation for KN230, aka DS5100, aka MIPSmate.
*/
static int kn230_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = -1,
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11),
[DEC_IRQ_ASC] = -1,
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN230_CPU_INR_HALT),
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN230_CPU_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC),
[DEC_IRQ_SCC0] = -1,
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII),
[DEC_IRQ_TC0] = -1,
[DEC_IRQ_TC1] = -1,
[DEC_IRQ_TC2] = -1,
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = -1,
[DEC_IRQ_ASC_ERR] = -1,
[DEC_IRQ_ASC_DMA] = -1,
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = -1,
[DEC_IRQ_SCC0A_RXERR] = -1,
[DEC_IRQ_SCC0A_RXDMA] = -1,
[DEC_IRQ_SCC0A_TXERR] = -1,
[DEC_IRQ_SCC0A_TXDMA] = -1,
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_DZ11) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11) } },
{ { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_SII) },
{ .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII) } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static void __init dec_init_kn230(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn230_interrupt,
sizeof(kn230_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn230_cpu_mask_nr_tbl,
sizeof(kn230_cpu_mask_nr_tbl));
mips_cpu_irq_init();
} /* dec_init_kn230 */
/*
* Machine-specific initialisation for KN02, aka DS5000/200, aka 3max.
*/
static int kn02_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = KN02_IRQ_NR(KN02_CSR_INR_DZ11),
[DEC_IRQ_ASC] = KN02_IRQ_NR(KN02_CSR_INR_ASC),
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = -1,
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = KN02_IRQ_NR(KN02_CSR_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC),
[DEC_IRQ_SCC0] = -1,
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = KN02_IRQ_NR(KN02_CSR_INR_TC0),
[DEC_IRQ_TC1] = KN02_IRQ_NR(KN02_CSR_INR_TC1),
[DEC_IRQ_TC2] = KN02_IRQ_NR(KN02_CSR_INR_TC2),
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = -1,
[DEC_IRQ_ASC_ERR] = -1,
[DEC_IRQ_ASC_DMA] = -1,
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = -1,
[DEC_IRQ_SCC0A_RXERR] = -1,
[DEC_IRQ_SCC0A_RXDMA] = -1,
[DEC_IRQ_SCC0A_TXERR] = -1,
[DEC_IRQ_SCC0A_TXDMA] = -1,
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn02_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_CASCADE) },
{ .p = kn02_io_int } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_DZ11) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_DZ11) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_ASC) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_ASC) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_LANCE) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_LANCE) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC2) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_TC2) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC1) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_TC1) } },
{ { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC0) },
{ .i = KN02_IRQ_NR(KN02_CSR_INR_TC0) } },
{ { .i = KN02_IRQ_ALL },
{ .p = kn02_all_int } },
};
static void __init dec_init_kn02(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn02_interrupt,
sizeof(kn02_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn02_cpu_mask_nr_tbl,
sizeof(kn02_cpu_mask_nr_tbl));
/* KN02 CSR IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn02_asic_mask_nr_tbl,
sizeof(kn02_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_kn02_irqs(KN02_IRQ_BASE);
} /* dec_init_kn02 */
/*
* Machine-specific initialisation for KN02-BA, aka DS5000/1xx
* (xx = 20, 25, 33), aka 3min. Also applies to KN04(-BA), aka
* DS5000/150, aka 4min.
*/
static int kn02ba_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = -1,
[DEC_IRQ_ASC] = IO_IRQ_NR(KN02BA_IO_INR_ASC),
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_HALT),
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = IO_IRQ_NR(KN02BA_IO_INR_LANCE),
[DEC_IRQ_BUS] = IO_IRQ_NR(KN02BA_IO_INR_BUS),
[DEC_IRQ_PSU] = IO_IRQ_NR(KN02BA_IO_INR_PSU),
[DEC_IRQ_RTC] = IO_IRQ_NR(KN02BA_IO_INR_RTC),
[DEC_IRQ_SCC0] = IO_IRQ_NR(KN02BA_IO_INR_SCC0),
[DEC_IRQ_SCC1] = IO_IRQ_NR(KN02BA_IO_INR_SCC1),
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0),
[DEC_IRQ_TC1] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1),
[DEC_IRQ_TC2] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2),
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
[DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
[DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
[DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
[DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
[DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
[DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
[DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
[DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
[DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
};
static int_ptr kn02ba_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_CASCADE) },
{ .p = kn02xa_io_int } },
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC2) },
{ .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC1) },
{ .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC0) },
{ .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0) } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_BUS) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_BUS) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_RTC) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_RTC) } },
{ { .i = IO_IRQ_DMA },
{ .p = asic_dma_int } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC0) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_SCC0) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC1) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_SCC1) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_ASC) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_ASC) } },
{ { .i = IO_IRQ_MASK(KN02BA_IO_INR_LANCE) },
{ .i = IO_IRQ_NR(KN02BA_IO_INR_LANCE) } },
{ { .i = IO_IRQ_ALL },
{ .p = asic_all_int } },
};
static void __init dec_init_kn02ba(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn02ba_interrupt,
sizeof(kn02ba_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn02ba_cpu_mask_nr_tbl,
sizeof(kn02ba_cpu_mask_nr_tbl));
/* I/O ASIC IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn02ba_asic_mask_nr_tbl,
sizeof(kn02ba_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_ioasic_irqs(IO_IRQ_BASE);
} /* dec_init_kn02ba */
/*
* Machine-specific initialisation for KN02-CA, aka DS5000/xx,
* (xx = 20, 25, 33), aka MAXine. Also applies to KN04(-CA), aka
* DS5000/50, aka 4MAXine.
*/
static int kn02ca_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = IO_IRQ_NR(KN02CA_IO_INR_AB_RECV),
[DEC_IRQ_AB_XMIT] = IO_IRQ_NR(KN02CA_IO_INR_AB_XMIT),
[DEC_IRQ_DZ11] = -1,
[DEC_IRQ_ASC] = IO_IRQ_NR(KN02CA_IO_INR_ASC),
[DEC_IRQ_FLOPPY] = IO_IRQ_NR(KN02CA_IO_INR_FLOPPY),
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_HALT),
[DEC_IRQ_ISDN] = IO_IRQ_NR(KN02CA_IO_INR_ISDN),
[DEC_IRQ_LANCE] = IO_IRQ_NR(KN02CA_IO_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS),
[DEC_IRQ_PSU] = -1,
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC),
[DEC_IRQ_SCC0] = IO_IRQ_NR(KN02CA_IO_INR_SCC0),
[DEC_IRQ_SCC1] = -1,
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = IO_IRQ_NR(KN02CA_IO_INR_TC0),
[DEC_IRQ_TC1] = IO_IRQ_NR(KN02CA_IO_INR_TC1),
[DEC_IRQ_TC2] = -1,
[DEC_IRQ_TIMER] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_TIMER),
[DEC_IRQ_VIDEO] = IO_IRQ_NR(KN02CA_IO_INR_VIDEO),
[DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
[DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
[DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
[DEC_IRQ_FLOPPY_ERR] = IO_IRQ_NR(IO_INR_FLOPPY_ERR),
[DEC_IRQ_ISDN_ERR] = IO_IRQ_NR(IO_INR_ISDN_ERR),
[DEC_IRQ_ISDN_RXDMA] = IO_IRQ_NR(IO_INR_ISDN_RXDMA),
[DEC_IRQ_ISDN_TXDMA] = IO_IRQ_NR(IO_INR_ISDN_TXDMA),
[DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
[DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
[DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
[DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
[DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
[DEC_IRQ_AB_RXERR] = IO_IRQ_NR(IO_INR_AB_RXERR),
[DEC_IRQ_AB_RXDMA] = IO_IRQ_NR(IO_INR_AB_RXDMA),
[DEC_IRQ_AB_TXERR] = IO_IRQ_NR(IO_INR_AB_TXERR),
[DEC_IRQ_AB_TXDMA] = IO_IRQ_NR(IO_INR_AB_TXDMA),
[DEC_IRQ_SCC1A_RXERR] = -1,
[DEC_IRQ_SCC1A_RXDMA] = -1,
[DEC_IRQ_SCC1A_TXERR] = -1,
[DEC_IRQ_SCC1A_TXDMA] = -1,
};
static int_ptr kn02ca_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_CASCADE) },
{ .p = kn02xa_io_int } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = IO_IRQ_DMA },
{ .p = asic_dma_int } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_SCC0) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_SCC0) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_ASC) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_ASC) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_LANCE) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_LANCE) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC1) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_TC1) } },
{ { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC0) },
{ .i = IO_IRQ_NR(KN02CA_IO_INR_TC0) } },
{ { .i = IO_IRQ_ALL },
{ .p = asic_all_int } },
};
static void __init dec_init_kn02ca(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn02ca_interrupt,
sizeof(kn02ca_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn02ca_cpu_mask_nr_tbl,
sizeof(kn02ca_cpu_mask_nr_tbl));
/* I/O ASIC IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn02ca_asic_mask_nr_tbl,
sizeof(kn02ca_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_ioasic_irqs(IO_IRQ_BASE);
} /* dec_init_kn02ca */
/*
* Machine-specific initialisation for KN03, aka DS5000/240,
* aka 3max+ and DS5900, aka BIGmax. Also applies to KN05, aka
* DS5000/260, aka 4max+ and DS5900/260.
*/
static int kn03_interrupt[DEC_NR_INTS] __initdata = {
[DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN03_CPU_INR_CASCADE),
[DEC_IRQ_AB_RECV] = -1,
[DEC_IRQ_AB_XMIT] = -1,
[DEC_IRQ_DZ11] = -1,
[DEC_IRQ_ASC] = IO_IRQ_NR(KN03_IO_INR_ASC),
[DEC_IRQ_FLOPPY] = -1,
[DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
[DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN03_CPU_INR_HALT),
[DEC_IRQ_ISDN] = -1,
[DEC_IRQ_LANCE] = IO_IRQ_NR(KN03_IO_INR_LANCE),
[DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS),
[DEC_IRQ_PSU] = IO_IRQ_NR(KN03_IO_INR_PSU),
[DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC),
[DEC_IRQ_SCC0] = IO_IRQ_NR(KN03_IO_INR_SCC0),
[DEC_IRQ_SCC1] = IO_IRQ_NR(KN03_IO_INR_SCC1),
[DEC_IRQ_SII] = -1,
[DEC_IRQ_TC0] = IO_IRQ_NR(KN03_IO_INR_TC0),
[DEC_IRQ_TC1] = IO_IRQ_NR(KN03_IO_INR_TC1),
[DEC_IRQ_TC2] = IO_IRQ_NR(KN03_IO_INR_TC2),
[DEC_IRQ_TIMER] = -1,
[DEC_IRQ_VIDEO] = -1,
[DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
[DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
[DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
[DEC_IRQ_FLOPPY_ERR] = -1,
[DEC_IRQ_ISDN_ERR] = -1,
[DEC_IRQ_ISDN_RXDMA] = -1,
[DEC_IRQ_ISDN_TXDMA] = -1,
[DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
[DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
[DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
[DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
[DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
[DEC_IRQ_AB_RXERR] = -1,
[DEC_IRQ_AB_RXDMA] = -1,
[DEC_IRQ_AB_TXERR] = -1,
[DEC_IRQ_AB_TXDMA] = -1,
[DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
[DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
[DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
[DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
};
static int_ptr kn03_cpu_mask_nr_tbl[][2] __initdata = {
{ { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_BUS) },
{ .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS) } },
{ { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_RTC) },
{ .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC) } },
{ { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_CASCADE) },
{ .p = kn03_io_int } },
{ { .i = DEC_CPU_IRQ_ALL },
{ .p = cpu_all_int } },
};
static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = {
{ { .i = IO_IRQ_DMA },
{ .p = asic_dma_int } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_SCC0) },
{ .i = IO_IRQ_NR(KN03_IO_INR_SCC0) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_SCC1) },
{ .i = IO_IRQ_NR(KN03_IO_INR_SCC1) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_ASC) },
{ .i = IO_IRQ_NR(KN03_IO_INR_ASC) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_LANCE) },
{ .i = IO_IRQ_NR(KN03_IO_INR_LANCE) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_TC2) },
{ .i = IO_IRQ_NR(KN03_IO_INR_TC2) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_TC1) },
{ .i = IO_IRQ_NR(KN03_IO_INR_TC1) } },
{ { .i = IO_IRQ_MASK(KN03_IO_INR_TC0) },
{ .i = IO_IRQ_NR(KN03_IO_INR_TC0) } },
{ { .i = IO_IRQ_ALL },
{ .p = asic_all_int } },
};
static void __init dec_init_kn03(void)
{
/* IRQ routing. */
memcpy(&dec_interrupt, &kn03_interrupt,
sizeof(kn03_interrupt));
/* CPU IRQ priorities. */
memcpy(&cpu_mask_nr_tbl, &kn03_cpu_mask_nr_tbl,
sizeof(kn03_cpu_mask_nr_tbl));
/* I/O ASIC IRQ priorities. */
memcpy(&asic_mask_nr_tbl, &kn03_asic_mask_nr_tbl,
sizeof(kn03_asic_mask_nr_tbl));
mips_cpu_irq_init();
init_ioasic_irqs(IO_IRQ_BASE);
} /* dec_init_kn03 */
void __init arch_init_irq(void)
{
switch (mips_machtype) {
case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
dec_init_kn01();
break;
case MACH_DS5100: /* DS5100 MIPSmate */
dec_init_kn230();
break;
case MACH_DS5000_200: /* DS5000/200 3max */
dec_init_kn02();
break;
case MACH_DS5000_1XX: /* DS5000/1xx 3min */
dec_init_kn02ba();
break;
case MACH_DS5000_2X0: /* DS5000/240 3max+ */
case MACH_DS5900: /* DS5900 bigmax */
dec_init_kn03();
break;
case MACH_DS5000_XX: /* Personal DS5000/xx */
dec_init_kn02ca();
break;
case MACH_DS5800: /* DS5800 Isis */
panic("Don't know how to set this up!");
break;
case MACH_DS5400: /* DS5400 MIPSfair */
panic("Don't know how to set this up!");
break;
case MACH_DS5500: /* DS5500 MIPSfair-2 */
panic("Don't know how to set this up!");
break;
}
/* Free the FPU interrupt if the exception is present. */
if (!cpu_has_nofpuex) {
cpu_fpu_mask = 0;
dec_interrupt[DEC_IRQ_FPU] = -1;
}
/* Free the halt interrupt unused on R4k systems. */
if (current_cpu_type() == CPU_R4000SC ||
current_cpu_type() == CPU_R4400SC)
dec_interrupt[DEC_IRQ_HALT] = -1;
/* Register board interrupts: FPU and cascade. */
if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT) &&
dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
struct irq_desc *desc_fpu;
int irq_fpu;
irq_fpu = dec_interrupt[DEC_IRQ_FPU];
if (request_irq(irq_fpu, no_action, IRQF_NO_THREAD, "fpu",
NULL))
pr_err("Failed to register fpu interrupt\n");
desc_fpu = irq_to_desc(irq_fpu);
fpu_kstat_irq = this_cpu_ptr(desc_fpu->kstat_irqs);
}
if (dec_interrupt[DEC_IRQ_CASCADE] >= 0) {
if (request_irq(dec_interrupt[DEC_IRQ_CASCADE], no_action,
IRQF_NO_THREAD, "cascade", NULL))
pr_err("Failed to register cascade interrupt\n");
}
/* Register the bus error interrupt. */
if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq_handler) {
if (request_irq(dec_interrupt[DEC_IRQ_BUS], busirq_handler,
busirq_flags, "bus error", busirq_handler))
pr_err("Failed to register bus error interrupt\n");
}
/* Register the HALT interrupt. */
if (dec_interrupt[DEC_IRQ_HALT] >= 0) {
if (request_irq(dec_interrupt[DEC_IRQ_HALT], dec_intr_halt,
IRQF_NO_THREAD, "halt", NULL))
pr_err("Failed to register halt interrupt\n");
}
}
asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
{
do_IRQ(irq);
return 0;
}