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SuperH updates for 3.6-rc1 merge window

Browse source 
- Migration off of old-style dynamic IRQ API.
 
 - irqdomain and generic irq chip propagation.
 
 - div4/6 clock consolidation, another step towards co-existing
   with the common struct clk infrastructure.
 
 - Extensive PFC rework
   - Decoupling GPIO from pin state.
   - Initial pinctrl support to facilitate incremental migration
     off of legacy pinmux.
   - gpiolib support made optional, and made pinctrl-backed.
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Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh

Pull SuperH updates from Paul Mundt:

 - Migration off of old-style dynamic IRQ API.

 - irqdomain and generic irq chip propagation.

 - div4/6 clock consolidation, another step towards co-existing with the
   common struct clk infrastructure.

 - Extensive PFC rework
   - Decoupling GPIO from pin state.
   - Initial pinctrl support to facilitate incremental migration off of
     legacy pinmux.
   - gpiolib support made optional, and made pinctrl-backed.

* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (38 commits)
  sh: pfc: pin config get/set support.
  sh: pfc: Prefer DRV_NAME over KBUILD_MODNAME.
  sh: pfc: pinctrl legacy group support.
  sh: pfc: Ignore pinmux GPIOs with invalid enum IDs.
  sh: pfc: Export pinctrl binding init symbol.
  sh: pfc: Error out on pinctrl init resolution failure.
  sh: pfc: Make pr_fmt consistent across pfc drivers.
  sh: pfc: pinctrl legacy function support.
  sh: pfc: Rudimentary pinctrl-backed GPIO support.
  sh: pfc: Dumb GPIO stringification.
  sh: pfc: Shuffle PFC support core.
  sh: pfc: Verify pin type encoding size at build time.
  sh: pfc: Kill off unused pinmux bias flags.
  sh: pfc: Make gpio chip support optional where possible.
  sh: pfc: Split out gpio chip support.
  sh64: Fix up section mismatch warnings.
  sh64: Attempt to make reserved insn trap handler resemble C.
  sh: Consolidate die definitions for trap handlers.
  sh64: Kill off old exception debugging helpers.
  sh64: Use generic unaligned access control/counters.
  ...
This commit is contained in:
Linus Torvalds 2012-07-23 19:05:53 -07:00
commit 47b170af84
37 changed files with 2262 additions and 1996 deletions
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1
arch/sh/Kconfig
View file

@ -60,6 +60,7 @@ config SUPERH32
config SUPERH64
def_bool ARCH = "sh64"
select KALLSYMS
config ARCH_DEFCONFIG
string

5
arch/sh/boards/Kconfig
View file

@ -44,6 +44,8 @@ config SH_7721_SOLUTION_ENGINE
config SH_7722_SOLUTION_ENGINE
bool "SolutionEngine7722"
select SOLUTION_ENGINE
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
depends on CPU_SUBTYPE_SH7722
help
Select 7722 SolutionEngine if configuring for a Hitachi SH772
@ -80,6 +82,8 @@ config SH_7780_SOLUTION_ENGINE
config SH_7343_SOLUTION_ENGINE
bool "SolutionEngine7343"
select SOLUTION_ENGINE
select GENERIC_IRQ_CHIP
select IRQ_DOMAIN
depends on CPU_SUBTYPE_SH7343
help
Select 7343 SolutionEngine if configuring for a Hitachi
@ -295,6 +299,7 @@ config SH_X3PROTO
bool "SH-X3 Prototype board"
depends on CPU_SUBTYPE_SHX3
select NO_IOPORT if !PCI
select IRQ_DOMAIN
config SH_MAGIC_PANEL_R2
bool "Magic Panel R2"

34
arch/sh/boards/mach-dreamcast/irq.c
View file

@ -8,10 +8,11 @@
* This file is part of the LinuxDC project (www.linuxdc.org)
* Released under the terms of the GNU GPL v2.0
*/
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <linux/irq.h>
#include <linux/export.h>
#include <linux/err.h>
#include <mach/sysasic.h>
/*
@ -141,26 +142,15 @@ int systemasic_irq_demux(int irq)
void systemasic_irq_init(void)
{
int i, nid = cpu_to_node(boot_cpu_data);
int irq_base, i;
/* Assign all virtual IRQs to the System ASIC int. handler */
for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++) {
unsigned int irq;
irq = create_irq_nr(i, nid);
if (unlikely(irq == 0)) {
pr_err("%s: failed hooking irq %d for systemasic\n",
__func__, i);
return;
}
if (unlikely(irq != i)) {
pr_err("%s: got irq %d but wanted %d, bailing.\n",
__func__, irq, i);
destroy_irq(irq);
return;
}
irq_set_chip_and_handler(i, &systemasic_int, handle_level_irq);
irq_base = irq_alloc_descs(HW_EVENT_IRQ_BASE, HW_EVENT_IRQ_BASE,
HW_EVENT_IRQ_MAX - HW_EVENT_IRQ_BASE, -1);
if (IS_ERR_VALUE(irq_base)) {
pr_err("%s: failed hooking irqs\n", __func__);
return;
}
for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
irq_set_chip_and_handler(i, &systemasic_int, handle_level_irq);
}

147
arch/sh/boards/mach-se/7343/irq.c
View file

@ -1,54 +1,109 @@
/*
* linux/arch/sh/boards/se/7343/irq.c
* Hitachi UL SolutionEngine 7343 FPGA IRQ Support.
*
* Copyright (C) 2008 Yoshihiro Shimoda
* Copyright (C) 2012 Paul Mundt
*
* Based on linux/arch/sh/boards/se/7722/irq.c
* Based on linux/arch/sh/boards/se/7343/irq.c
* Copyright (C) 2007 Nobuhiro Iwamatsu
*
* 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.
*/
#define DRV_NAME "SE7343-FPGA"
#define pr_fmt(fmt) DRV_NAME ": " fmt
#define irq_reg_readl ioread16
#define irq_reg_writel iowrite16
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/io.h>
#include <asm/sizes.h>
#include <mach-se/mach/se7343.h>
unsigned int se7343_fpga_irq[SE7343_FPGA_IRQ_NR] = { 0, };
#define PA_CPLD_BASE_ADDR 0x11400000
#define PA_CPLD_ST_REG 0x08 /* CPLD Interrupt status register */
#define PA_CPLD_IMSK_REG 0x0a /* CPLD Interrupt mask register */
static void disable_se7343_irq(struct irq_data *data)
{
unsigned int bit = (unsigned int)irq_data_get_irq_chip_data(data);
__raw_writew(__raw_readw(PA_CPLD_IMSK) | 1 << bit, PA_CPLD_IMSK);
}
static void enable_se7343_irq(struct irq_data *data)
{
unsigned int bit = (unsigned int)irq_data_get_irq_chip_data(data);
__raw_writew(__raw_readw(PA_CPLD_IMSK) & ~(1 << bit), PA_CPLD_IMSK);
}
static struct irq_chip se7343_irq_chip __read_mostly = {
.name = "SE7343-FPGA",
.irq_mask = disable_se7343_irq,
.irq_unmask = enable_se7343_irq,
};
static void __iomem *se7343_irq_regs;
struct irq_domain *se7343_irq_domain;
static void se7343_irq_demux(unsigned int irq, struct irq_desc *desc)
{
unsigned short intv = __raw_readw(PA_CPLD_ST);
unsigned int ext_irq = 0;
struct irq_data *data = irq_get_irq_data(irq);
struct irq_chip *chip = irq_data_get_irq_chip(data);
unsigned long mask;
int bit;
intv &= (1 << SE7343_FPGA_IRQ_NR) - 1;
chip->irq_mask_ack(data);
for (; intv; intv >>= 1, ext_irq++) {
if (!(intv & 1))
continue;
mask = ioread16(se7343_irq_regs + PA_CPLD_ST_REG);
generic_handle_irq(se7343_fpga_irq[ext_irq]);
for_each_set_bit(bit, &mask, SE7343_FPGA_IRQ_NR)
generic_handle_irq(irq_linear_revmap(se7343_irq_domain, bit));
chip->irq_unmask(data);
}
static void __init se7343_domain_init(void)
{
int i;
se7343_irq_domain = irq_domain_add_linear(NULL, SE7343_FPGA_IRQ_NR,
&irq_domain_simple_ops, NULL);
if (unlikely(!se7343_irq_domain)) {
printk("Failed to get IRQ domain\n");
return;
}
for (i = 0; i < SE7343_FPGA_IRQ_NR; i++) {
int irq = irq_create_mapping(se7343_irq_domain, i);
if (unlikely(irq == 0)) {
printk("Failed to allocate IRQ %d\n", i);
return;
}
}
}
static void __init se7343_gc_init(void)
{
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
unsigned int irq_base;
irq_base = irq_linear_revmap(se7343_irq_domain, 0);
gc = irq_alloc_generic_chip(DRV_NAME, 1, irq_base, se7343_irq_regs,
handle_level_irq);
if (unlikely(!gc))
return;
ct = gc->chip_types;
ct->chip.irq_mask = irq_gc_mask_set_bit;
ct->chip.irq_unmask = irq_gc_mask_clr_bit;
ct->regs.mask = PA_CPLD_IMSK_REG;
irq_setup_generic_chip(gc, IRQ_MSK(SE7343_FPGA_IRQ_NR),
IRQ_GC_INIT_MASK_CACHE,
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
irq_set_chained_handler(IRQ0_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);
irq_set_chained_handler(IRQ1_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ1_IRQ, IRQ_TYPE_LEVEL_LOW);
irq_set_chained_handler(IRQ4_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ4_IRQ, IRQ_TYPE_LEVEL_LOW);
irq_set_chained_handler(IRQ5_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ5_IRQ, IRQ_TYPE_LEVEL_LOW);
}
/*
@ -56,31 +111,19 @@ static void se7343_irq_demux(unsigned int irq, struct irq_desc *desc)
*/
void __init init_7343se_IRQ(void)
{
int i, irq;
__raw_writew(0, PA_CPLD_IMSK); /* disable all irqs */
__raw_writew(0x2000, 0xb03fffec); /* mrshpc irq enable */
for (i = 0; i < SE7343_FPGA_IRQ_NR; i++) {
irq = create_irq();
if (irq < 0)
return;
se7343_fpga_irq[i] = irq;
irq_set_chip_and_handler_name(se7343_fpga_irq[i],
&se7343_irq_chip,
handle_level_irq,
"level");
irq_set_chip_data(se7343_fpga_irq[i], (void *)i);
se7343_irq_regs = ioremap(PA_CPLD_BASE_ADDR, SZ_16);
if (unlikely(!se7343_irq_regs)) {
pr_err("Failed to remap CPLD\n");
return;
}
irq_set_chained_handler(IRQ0_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);
irq_set_chained_handler(IRQ1_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ1_IRQ, IRQ_TYPE_LEVEL_LOW);
irq_set_chained_handler(IRQ4_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ4_IRQ, IRQ_TYPE_LEVEL_LOW);
irq_set_chained_handler(IRQ5_IRQ, se7343_irq_demux);
irq_set_irq_type(IRQ5_IRQ, IRQ_TYPE_LEVEL_LOW);
/*
* All FPGA IRQs disabled by default
*/
iowrite16(0, se7343_irq_regs + PA_CPLD_IMSK_REG);
__raw_writew(0x2000, 0xb03fffec); /* mrshpc irq enable */
se7343_domain_init();
se7343_gc_init();
}

10
arch/sh/boards/mach-se/7343/setup.c
View file

@ -5,6 +5,7 @@
#include <linux/serial_reg.h>
#include <linux/usb/isp116x.h>
#include <linux/delay.h>
#include <linux/irqdomain.h>
#include <asm/machvec.h>
#include <mach-se/mach/se7343.h>
#include <asm/heartbeat.h>
@ -145,11 +146,12 @@ static struct platform_device *sh7343se_platform_devices[] __initdata = {
static int __init sh7343se_devices_setup(void)
{
/* Wire-up dynamic vectors */
serial_platform_data[0].irq = se7343_fpga_irq[SE7343_FPGA_IRQ_UARTA];
serial_platform_data[1].irq = se7343_fpga_irq[SE7343_FPGA_IRQ_UARTB];
serial_platform_data[0].irq = irq_find_mapping(se7343_irq_domain,
SE7343_FPGA_IRQ_UARTA);
serial_platform_data[1].irq = irq_find_mapping(se7343_irq_domain,
SE7343_FPGA_IRQ_UARTB);
usb_resources[2].start = usb_resources[2].end =
se7343_fpga_irq[SE7343_FPGA_IRQ_USB];
irq_find_mapping(se7343_irq_domain, SE7343_FPGA_IRQ_USB);
return platform_add_devices(sh7343se_platform_devices,
ARRAY_SIZE(sh7343se_platform_devices));

135
arch/sh/boards/mach-se/7722/irq.c
View file

@ -1,79 +1,96 @@
/*
* linux/arch/sh/boards/se/7722/irq.c
* Hitachi UL SolutionEngine 7722 FPGA IRQ Support.
*
* Copyright (C) 2007 Nobuhiro Iwamatsu
*
* Hitachi UL SolutionEngine 7722 Support.
* Copyright (C) 2012 Paul Mundt
*
* 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.
*/
#define DRV_NAME "SE7722-FPGA"
#define pr_fmt(fmt) DRV_NAME ": " fmt
#define irq_reg_readl ioread16
#define irq_reg_writel iowrite16
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <linux/irqdomain.h>
#include <linux/io.h>
#include <linux/err.h>
#include <asm/sizes.h>
#include <mach-se/mach/se7722.h>
unsigned int se7722_fpga_irq[SE7722_FPGA_IRQ_NR] = { 0, };
#define IRQ01_BASE_ADDR 0x11800000
#define IRQ01_MODE_REG 0
#define IRQ01_STS_REG 4
#define IRQ01_MASK_REG 8
static void disable_se7722_irq(struct irq_data *data)
{
unsigned int bit = (unsigned int)irq_data_get_irq_chip_data(data);
__raw_writew(__raw_readw(IRQ01_MASK) | 1 << bit, IRQ01_MASK);
}
static void enable_se7722_irq(struct irq_data *data)
{
unsigned int bit = (unsigned int)irq_data_get_irq_chip_data(data);
__raw_writew(__raw_readw(IRQ01_MASK) & ~(1 << bit), IRQ01_MASK);
}
static struct irq_chip se7722_irq_chip __read_mostly = {
.name = "SE7722-FPGA",
.irq_mask = disable_se7722_irq,
.irq_unmask = enable_se7722_irq,
};
static void __iomem *se7722_irq_regs;
struct irq_domain *se7722_irq_domain;
static void se7722_irq_demux(unsigned int irq, struct irq_desc *desc)
{
unsigned short intv = __raw_readw(IRQ01_STS);
unsigned int ext_irq = 0;
struct irq_data *data = irq_get_irq_data(irq);
struct irq_chip *chip = irq_data_get_irq_chip(data);
unsigned long mask;
int bit;
intv &= (1 << SE7722_FPGA_IRQ_NR) - 1;
chip->irq_mask_ack(data);
for (; intv; intv >>= 1, ext_irq++) {
if (!(intv & 1))
continue;
mask = ioread16(se7722_irq_regs + IRQ01_STS_REG);
generic_handle_irq(se7722_fpga_irq[ext_irq]);
for_each_set_bit(bit, &mask, SE7722_FPGA_IRQ_NR)
generic_handle_irq(irq_linear_revmap(se7722_irq_domain, bit));
chip->irq_unmask(data);
}
static void __init se7722_domain_init(void)
{
int i;
se7722_irq_domain = irq_domain_add_linear(NULL, SE7722_FPGA_IRQ_NR,
&irq_domain_simple_ops, NULL);
if (unlikely(!se7722_irq_domain)) {
printk("Failed to get IRQ domain\n");
return;
}
for (i = 0; i < SE7722_FPGA_IRQ_NR; i++) {
int irq = irq_create_mapping(se7722_irq_domain, i);
if (unlikely(irq == 0)) {
printk("Failed to allocate IRQ %d\n", i);
return;
}
}
}
/*
* Initialize IRQ setting
*/
void __init init_se7722_IRQ(void)
static void __init se7722_gc_init(void)
{
int i, irq;
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
unsigned int irq_base;
__raw_writew(0, IRQ01_MASK); /* disable all irqs */
__raw_writew(0x2000, 0xb03fffec); /* mrshpc irq enable */
irq_base = irq_linear_revmap(se7722_irq_domain, 0);
for (i = 0; i < SE7722_FPGA_IRQ_NR; i++) {
irq = create_irq();
if (irq < 0)
return;
se7722_fpga_irq[i] = irq;
gc = irq_alloc_generic_chip(DRV_NAME, 1, irq_base, se7722_irq_regs,
handle_level_irq);
if (unlikely(!gc))
return;
irq_set_chip_and_handler_name(se7722_fpga_irq[i],
&se7722_irq_chip,
handle_level_irq,
"level");
ct = gc->chip_types;
ct->chip.irq_mask = irq_gc_mask_set_bit;
ct->chip.irq_unmask = irq_gc_mask_clr_bit;
irq_set_chip_data(se7722_fpga_irq[i], (void *)i);
}
ct->regs.mask = IRQ01_MASK_REG;
irq_setup_generic_chip(gc, IRQ_MSK(SE7722_FPGA_IRQ_NR),
IRQ_GC_INIT_MASK_CACHE,
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
irq_set_chained_handler(IRQ0_IRQ, se7722_irq_demux);
irq_set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);
@ -81,3 +98,25 @@ void __init init_se7722_IRQ(void)
irq_set_chained_handler(IRQ1_IRQ, se7722_irq_demux);
irq_set_irq_type(IRQ1_IRQ, IRQ_TYPE_LEVEL_LOW);
}
/*
* Initialize FPGA IRQs
*/
void __init init_se7722_IRQ(void)
{
se7722_irq_regs = ioremap(IRQ01_BASE_ADDR, SZ_16);
if (unlikely(!se7722_irq_regs)) {
printk("Failed to remap IRQ01 regs\n");
return;
}
/*
* All FPGA IRQs disabled by default
*/
iowrite16(0, se7722_irq_regs + IRQ01_MASK_REG);
__raw_writew(0x2000, 0xb03fffec); /* mrshpc irq enable */
se7722_domain_init();
se7722_gc_init();
}

6
arch/sh/boards/mach-se/7722/setup.c
View file

@ -2,6 +2,7 @@
* linux/arch/sh/boards/se/7722/setup.c
*
* Copyright (C) 2007 Nobuhiro Iwamatsu
* Copyright (C) 2012 Paul Mundt
*
* Hitachi UL SolutionEngine 7722 Support.
*
@ -15,6 +16,7 @@
#include <linux/ata_platform.h>
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
#include <linux/irqdomain.h>
#include <linux/smc91x.h>
#include <linux/sh_intc.h>
#include <mach-se/mach/se7722.h>
@ -143,10 +145,10 @@ static int __init se7722_devices_setup(void)
/* Wire-up dynamic vectors */
cf_ide_resources[2].start = cf_ide_resources[2].end =
se7722_fpga_irq[SE7722_FPGA_IRQ_MRSHPC0];
irq_find_mapping(se7722_irq_domain, SE7722_FPGA_IRQ_MRSHPC0);
smc91x_eth_resources[1].start = smc91x_eth_resources[1].end =
se7722_fpga_irq[SE7722_FPGA_IRQ_SMC];
irq_find_mapping(se7722_irq_domain, SE7722_FPGA_IRQ_SMC);
return platform_add_devices(se7722_devices, ARRAY_SIZE(se7722_devices));
}

38
arch/sh/boards/mach-se/7724/irq.c
View file

@ -17,8 +17,10 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <linux/export.h>
#include <linux/topology.h>
#include <linux/io.h>
#include <linux/err.h>
#include <mach-se/mach/se7724.h>
struct fpga_irq {
@ -111,7 +113,7 @@ static void se7724_irq_demux(unsigned int irq, struct irq_desc *desc)
*/
void __init init_se7724_IRQ(void)
{
int i, nid = cpu_to_node(boot_cpu_data);
int irq_base, i;
__raw_writew(0xffff, IRQ0_MR); /* mask all */
__raw_writew(0xffff, IRQ1_MR); /* mask all */
@ -121,29 +123,17 @@ void __init init_se7724_IRQ(void)
__raw_writew(0x0000, IRQ2_SR); /* clear irq */
__raw_writew(0x002a, IRQ_MODE); /* set irq type */
for (i = 0; i < SE7724_FPGA_IRQ_NR; i++) {
int irq, wanted;
wanted = SE7724_FPGA_IRQ_BASE + i;
irq = create_irq_nr(wanted, nid);
if (unlikely(irq == 0)) {
pr_err("%s: failed hooking irq %d for FPGA\n",
__func__, wanted);
return;
}
if (unlikely(irq != wanted)) {
pr_err("%s: got irq %d but wanted %d, bailing.\n",
__func__, irq, wanted);
destroy_irq(irq);
return;
}
irq_set_chip_and_handler_name(irq, &se7724_irq_chip,
handle_level_irq, "level");
irq_base = irq_alloc_descs(SE7724_FPGA_IRQ_BASE, SE7724_FPGA_IRQ_BASE,
SE7724_FPGA_IRQ_NR, numa_node_id());
if (IS_ERR_VALUE(irq_base)) {
pr_err("%s: failed hooking irqs for FPGA\n", __func__);
return;
}
for (i = 0; i < SE7724_FPGA_IRQ_NR; i++)
irq_set_chip_and_handler_name(irq_base + i, &se7724_irq_chip,
handle_level_irq, "level");
irq_set_chained_handler(IRQ0_IRQ, se7724_irq_demux);
irq_set_irq_type(IRQ0_IRQ, IRQ_TYPE_LEVEL_LOW);

57
arch/sh/boards/mach-x3proto/gpio.c
View file

@ -3,7 +3,7 @@
*
* Renesas SH-X3 Prototype Baseboard GPIO Support.
*
* Copyright (C) 2010 Paul Mundt
* Copyright (C) 2010 - 2012 Paul Mundt
*
* 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
@ -17,6 +17,7 @@
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/irqdomain.h>
#include <linux/io.h>
#include <mach/ilsel.h>
#include <mach/hardware.h>
@ -26,7 +27,7 @@
#define KEYDETR 0xb81c0004
static DEFINE_SPINLOCK(x3proto_gpio_lock);
static unsigned int x3proto_gpio_irq_map[NR_BASEBOARD_GPIOS] = { 0, };
static struct irq_domain *x3proto_irq_domain;
static int x3proto_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
@ -49,7 +50,14 @@ static int x3proto_gpio_get(struct gpio_chip *chip, unsigned gpio)
static int x3proto_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
{
return x3proto_gpio_irq_map[gpio];
int virq;
if (gpio < chip->ngpio)
virq = irq_create_mapping(x3proto_irq_domain, gpio);
else
virq = -ENXIO;
return virq;
}
static void x3proto_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
@ -62,9 +70,8 @@ static void x3proto_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
chip->irq_mask_ack(data);
mask = __raw_readw(KEYDETR);
for_each_set_bit(pin, &mask, NR_BASEBOARD_GPIOS)
generic_handle_irq(x3proto_gpio_to_irq(NULL, pin));
generic_handle_irq(irq_linear_revmap(x3proto_irq_domain, pin));
chip->irq_unmask(data);
}
@ -78,10 +85,23 @@ struct gpio_chip x3proto_gpio_chip = {
.ngpio = NR_BASEBOARD_GPIOS,
};
static int x3proto_gpio_irq_map(struct irq_domain *domain, unsigned int virq,
irq_hw_number_t hwirq)
{
irq_set_chip_and_handler_name(virq, &dummy_irq_chip, handle_simple_irq,
"gpio");
return 0;
}
static struct irq_domain_ops x3proto_gpio_irq_ops = {
.map = x3proto_gpio_irq_map,
.xlate = irq_domain_xlate_twocell,
};
int __init x3proto_gpio_setup(void)
{
int ilsel;
int ret, i;
int ilsel, ret;
ilsel = ilsel_enable(ILSEL_KEY);
if (unlikely(ilsel < 0))
@ -91,21 +111,10 @@ int __init x3proto_gpio_setup(void)
if (unlikely(ret))
goto err_gpio;
for (i = 0; i < NR_BASEBOARD_GPIOS; i++) {
unsigned long flags;
int irq = create_irq();
if (unlikely(irq < 0)) {
ret = -EINVAL;
goto err_irq;
}
spin_lock_irqsave(&x3proto_gpio_lock, flags);
x3proto_gpio_irq_map[i] = irq;
irq_set_chip_and_handler_name(irq, &dummy_irq_chip,
handle_simple_irq, "gpio");
spin_unlock_irqrestore(&x3proto_gpio_lock, flags);
}
x3proto_irq_domain = irq_domain_add_linear(NULL, NR_BASEBOARD_GPIOS,
&x3proto_gpio_irq_ops, NULL);
if (unlikely(!x3proto_irq_domain))
goto err_irq;
pr_info("registering '%s' support, handling GPIOs %u -> %u, "
"bound to IRQ %u\n",
@ -119,10 +128,6 @@ int __init x3proto_gpio_setup(void)
return 0;
err_irq:
for (; i >= 0; --i)
if (x3proto_gpio_irq_map[i])
destroy_irq(x3proto_gpio_irq_map[i]);
ret = gpiochip_remove(&x3proto_gpio_chip);
if (unlikely(ret))
pr_err("Failed deregistering GPIO\n");

33
arch/sh/cchips/hd6446x/hd64461.c
View file

@ -73,10 +73,7 @@ static void hd64461_irq_demux(unsigned int irq, struct irq_desc *desc)
int __init setup_hd64461(void)
{
int i, nid = cpu_to_node(boot_cpu_data);
if (!MACH_HD64461)
return 0;
int irq_base, i;
printk(KERN_INFO
"HD64461 configured at 0x%x on irq %d(mapped into %d to %d)\n",
@ -89,28 +86,16 @@ int __init setup_hd64461(void)
#endif
__raw_writew(0xffff, HD64461_NIMR);
/* IRQ 80 -> 95 belongs to HD64461 */
for (i = HD64461_IRQBASE; i < HD64461_IRQBASE + 16; i++) {
unsigned int irq;
irq = create_irq_nr(i, nid);
if (unlikely(irq == 0)) {
pr_err("%s: failed hooking irq %d for HD64461\n",
__func__, i);
return -EBUSY;
}
if (unlikely(irq != i)) {
pr_err("%s: got irq %d but wanted %d, bailing.\n",
__func__, irq, i);
destroy_irq(irq);
return -EINVAL;
}
irq_set_chip_and_handler(i, &hd64461_irq_chip,
handle_level_irq);
irq_base = irq_alloc_descs(HD64461_IRQBASE, HD64461_IRQBASE, 16, -1);
if (IS_ERR_VALUE(irq_base)) {
pr_err("%s: failed hooking irqs for HD64461\n", __func__);
return irq_base;
}
for (i = 0; i < 16; i++)
irq_set_chip_and_handler(irq_base + i, &hd64461_irq_chip,
handle_level_irq);
irq_set_chained_handler(CONFIG_HD64461_IRQ, hd64461_irq_demux);
irq_set_irq_type(CONFIG_HD64461_IRQ, IRQ_TYPE_LEVEL_LOW);

4
arch/sh/include/asm/bug.h
View file

@ -110,6 +110,10 @@ do { \
#include <asm-generic/bug.h>
struct pt_regs;
/* arch/sh/kernel/traps.c */
extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
extern void die_if_kernel(const char *str, struct pt_regs *regs, long err);
extern void die_if_no_fixup(const char *str, struct pt_regs *regs, long err);
#endif /* __ASM_SH_BUG_H */

2
arch/sh/include/asm/kdebug.h
View file

@ -10,6 +10,8 @@ enum die_val {
DIE_SSTEP,
};
/* arch/sh/kernel/dumpstack.c */
extern void printk_address(unsigned long address, int reliable);
extern void dump_mem(const char *str, unsigned long bottom, unsigned long top);
#endif /* __ASM_SH_KDEBUG_H */

7
arch/sh/include/mach-se/mach/se7343.h
View file

@ -50,9 +50,6 @@
#define PA_LED 0xb0C00000 /* LED */
#define LED_SHIFT 0
#define PA_DIPSW 0xb0900000 /* Dip switch 31 */
#define PA_CPLD_MODESET 0xb1400004 /* CPLD Mode set register */
#define PA_CPLD_ST 0xb1400008 /* CPLD Interrupt status register */
#define PA_CPLD_IMSK 0xb140000a /* CPLD Interrupt mask register */
/* Area 5 */
#define PA_EXT5 0x14000000
#define PA_EXT5_SIZE 0x04000000
@ -135,8 +132,10 @@
#define SE7343_FPGA_IRQ_NR 12
struct irq_domain;
/* arch/sh/boards/se/7343/irq.c */
extern unsigned int se7343_fpga_irq[];
extern struct irq_domain *se7343_irq_domain;
void init_7343se_IRQ(void);

10
arch/sh/include/mach-se/mach/se7722.h
View file

@ -81,12 +81,6 @@
#define IRQ0_IRQ evt2irq(0x600)
#define IRQ1_IRQ evt2irq(0x620)
#define IRQ01_MODE 0xb1800000
#define IRQ01_STS 0xb1800004
#define IRQ01_MASK 0xb1800008
/* Bits in IRQ01_* registers */
#define SE7722_FPGA_IRQ_USB 0 /* IRQ0 */
#define SE7722_FPGA_IRQ_SMC 1 /* IRQ0 */
#define SE7722_FPGA_IRQ_MRSHPC0 2 /* IRQ1 */
@ -95,8 +89,10 @@
#define SE7722_FPGA_IRQ_MRSHPC3 5 /* IRQ1 */
#define SE7722_FPGA_IRQ_NR 6
struct irq_domain;
/* arch/sh/boards/se/7722/irq.c */
extern unsigned int se7722_fpga_irq[];
extern struct irq_domain *se7722_irq_domain;
void init_se7722_IRQ(void);

63
arch/sh/kernel/cpu/sh5/unwind.c
View file

@ -16,6 +16,8 @@
#include <asm/ptrace.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/unwinder.h>
#include <asm/stacktrace.h>
static u8 regcache[63];
@ -199,8 +201,11 @@ static int lookup_prev_stack_frame(unsigned long fp, unsigned long pc,
return 0;
}
/* Don't put this on the stack since we'll want to call sh64_unwind
* when we're close to underflowing the stack anyway. */
/*
* Don't put this on the stack since we'll want to call in to
* sh64_unwinder_dump() when we're close to underflowing the stack
* anyway.
*/
static struct pt_regs here_regs;
extern const char syscall_ret;
@ -208,17 +213,19 @@ extern const char ret_from_syscall;
extern const char ret_from_exception;
extern const char ret_from_irq;
static void sh64_unwind_inner(struct pt_regs *regs);
static void sh64_unwind_inner(const struct stacktrace_ops *ops,
void *data, struct pt_regs *regs);
static void unwind_nested (unsigned long pc, unsigned long fp)
static inline void unwind_nested(const struct stacktrace_ops *ops, void *data,
unsigned long pc, unsigned long fp)
{
if ((fp >= __MEMORY_START) &&
((fp & 7) == 0)) {
sh64_unwind_inner((struct pt_regs *) fp);
}
((fp & 7) == 0))
sh64_unwind_inner(ops, data, (struct pt_regs *)fp);
}
static void sh64_unwind_inner(struct pt_regs *regs)
static void sh64_unwind_inner(const struct stacktrace_ops *ops,
void *data, struct pt_regs *regs)
{
unsigned long pc, fp;
int ofs = 0;
@ -232,29 +239,29 @@ static void sh64_unwind_inner(struct pt_regs *regs)
int cond;
unsigned long next_fp, next_pc;
if (pc == ((unsigned long) &syscall_ret & ~1)) {
if (pc == ((unsigned long)&syscall_ret & ~1)) {
printk("SYSCALL\n");
unwind_nested(pc,fp);
unwind_nested(ops, data, pc, fp);
return;
}
if (pc == ((unsigned long) &ret_from_syscall & ~1)) {
if (pc == ((unsigned long)&ret_from_syscall & ~1)) {
printk("SYSCALL (PREEMPTED)\n");
unwind_nested(pc,fp);
unwind_nested(ops, data, pc, fp);
return;
}
/* In this case, the PC is discovered by lookup_prev_stack_frame but
it has 4 taken off it to look like the 'caller' */
if (pc == ((unsigned long) &ret_from_exception & ~1)) {
if (pc == ((unsigned long)&ret_from_exception & ~1)) {
printk("EXCEPTION\n");
unwind_nested(pc,fp);
unwind_nested(ops, data, pc, fp);
return;
}
if (pc == ((unsigned long) &ret_from_irq & ~1)) {
if (pc == ((unsigned long)&ret_from_irq & ~1)) {
printk("IRQ\n");
unwind_nested(pc,fp);
unwind_nested(ops, data, pc, fp);
return;
}
@ -263,8 +270,7 @@ static void sh64_unwind_inner(struct pt_regs *regs)
pc -= ofs;
printk("[<%08lx>] ", pc);
print_symbol("%s\n", pc);
ops->address(data, pc, 1);
if (first_pass) {
/* If the innermost frame is a leaf function, it's
@ -287,10 +293,13 @@ static void sh64_unwind_inner(struct pt_regs *regs)
}
printk("\n");
}
void sh64_unwind(struct pt_regs *regs)
static void sh64_unwinder_dump(struct task_struct *task,
struct pt_regs *regs,
unsigned long *sp,
const struct stacktrace_ops *ops,
void *data)
{
if (!regs) {
/*
@ -320,7 +329,17 @@ void sh64_unwind(struct pt_regs *regs)
);
}
printk("\nCall Trace:\n");
sh64_unwind_inner(regs);
sh64_unwind_inner(ops, data, regs);
}
static struct unwinder sh64_unwinder = {
.name = "sh64-unwinder",
.dump = sh64_unwinder_dump,
.rating = 150,
};
static int __init sh64_unwinder_init(void)
{
return unwinder_register(&sh64_unwinder);
}
early_initcall(sh64_unwinder_init);

58
arch/sh/kernel/dumpstack.c
View file

@ -2,13 +2,48 @@
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
* Copyright (C) 2009 Matt Fleming
* Copyright (C) 2002 - 2012 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/kallsyms.h>
#include <linux/ftrace.h>
#include <linux/debug_locks.h>
#include <linux/kdebug.h>
#include <linux/export.h>
#include <linux/uaccess.h>
#include <asm/unwinder.h>
#include <asm/stacktrace.h>
void dump_mem(const char *str, unsigned long bottom, unsigned long top)
{
unsigned long p;
int i;
printk("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
for (p = bottom & ~31; p < top; ) {
printk("%04lx: ", p & 0xffff);
for (i = 0; i < 8; i++, p += 4) {
unsigned int val;
if (p < bottom || p >= top)
printk(" ");
else {
if (__get_user(val, (unsigned int __user *)p)) {
printk("\n");
return;
}
printk("%08x ", val);
}
}
printk("\n");
}
}
void printk_address(unsigned long address, int reliable)
{
printk(" [<%p>] %s%pS\n", (void *) address,
@ -106,3 +141,26 @@ void show_trace(struct task_struct *tsk, unsigned long *sp,
debug_show_held_locks(tsk);
}
void show_stack(struct task_struct *tsk, unsigned long *sp)
{
unsigned long stack;
if (!tsk)
tsk = current;
if (tsk == current)
sp = (unsigned long *)current_stack_pointer;
else
sp = (unsigned long *)tsk->thread.sp;
stack = (unsigned long)sp;
dump_mem("Stack: ", stack, THREAD_SIZE +
(unsigned long)task_stack_page(tsk));
show_trace(tsk, sp, NULL);
}
void dump_stack(void)
{
show_stack(NULL, NULL);
}
EXPORT_SYMBOL(dump_stack);

10
arch/sh/kernel/irq.c
View file

@ -231,16 +231,6 @@ void __init init_IRQ(void)
irq_ctx_init(smp_processor_id());
}
#ifdef CONFIG_SPARSE_IRQ
int __init arch_probe_nr_irqs(void)
{
/*
* No pre-allocated IRQs.
*/
return 0;
}
#endif
#ifdef CONFIG_HOTPLUG_CPU
static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
{

71
arch/sh/kernel/traps.c
View file

@ -6,9 +6,80 @@
#include <linux/sched.h>
#include <linux/uaccess.h>
#include <linux/hardirq.h>
#include <linux/kernel.h>
#include <linux/kexec.h>
#include <linux/module.h>
#include <asm/unwinder.h>
#include <asm/traps.h>
static DEFINE_SPINLOCK(die_lock);
void die(const char *str, struct pt_regs *regs, long err)
{
static int die_counter;
oops_enter();
spin_lock_irq(&die_lock);
console_verbose();
bust_spinlocks(1);
printk("%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
print_modules();
show_regs(regs);
printk("Process: %s (pid: %d, stack limit = %p)\n", current->comm,
task_pid_nr(current), task_stack_page(current) + 1);
if (!user_mode(regs) || in_interrupt())
dump_mem("Stack: ", regs->regs[15], THREAD_SIZE +
(unsigned long)task_stack_page(current));
notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV);
bust_spinlocks(0);
add_taint(TAINT_DIE);
spin_unlock_irq(&die_lock);
oops_exit();
if (kexec_should_crash(current))
crash_kexec(regs);
if (in_interrupt())
panic("Fatal exception in interrupt");
if (panic_on_oops)
panic("Fatal exception");
do_exit(SIGSEGV);
}
void die_if_kernel(const char *str, struct pt_regs *regs, long err)
{
if (!user_mode(regs))
die(str, regs, err);
}
/*
* try and fix up kernelspace address errors
* - userspace errors just cause EFAULT to be returned, resulting in SEGV
* - kernel/userspace interfaces cause a jump to an appropriate handler
* - other kernel errors are bad
*/
void die_if_no_fixup(const char *str, struct pt_regs *regs, long err)
{
if (!user_mode(regs)) {
const struct exception_table_entry *fixup;
fixup = search_exception_tables(regs->pc);
if (fixup) {
regs->pc = fixup->fixup;
return;
}
die(str, regs, err);
}
}
#ifdef CONFIG_GENERIC_BUG
static void handle_BUG(struct pt_regs *regs)
{

121
arch/sh/kernel/traps_32.c
View file

@ -16,13 +16,11 @@
#include <linux/hardirq.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/kallsyms.h>
#include <linux/io.h>
#include <linux/bug.h>
#include <linux/debug_locks.h>
#include <linux/kdebug.h>
#include <linux/kexec.h>
#include <linux/limits.h>
#include <linux/sysfs.h>
#include <linux/uaccess.h>
@ -48,102 +46,6 @@
#define TRAP_ILLEGAL_SLOT_INST 13
#endif
static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
{
unsigned long p;
int i;
printk("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
for (p = bottom & ~31; p < top; ) {
printk("%04lx: ", p & 0xffff);
for (i = 0; i < 8; i++, p += 4) {
unsigned int val;
if (p < bottom || p >= top)
printk(" ");
else {
if (__get_user(val, (unsigned int __user *)p)) {
printk("\n");
return;
}
printk("%08x ", val);
}
}
printk("\n");
}
}
static DEFINE_SPINLOCK(die_lock);
void die(const char * str, struct pt_regs * regs, long err)
{
static int die_counter;
oops_enter();
spin_lock_irq(&die_lock);
console_verbose();
bust_spinlocks(1);
printk("%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
print_modules();
show_regs(regs);
printk("Process: %s (pid: %d, stack limit = %p)\n", current->comm,
task_pid_nr(current), task_stack_page(current) + 1);
if (!user_mode(regs) || in_interrupt())
dump_mem("Stack: ", regs->regs[15], THREAD_SIZE +
(unsigned long)task_stack_page(current));
notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV);
bust_spinlocks(0);
add_taint(TAINT_DIE);
spin_unlock_irq(&die_lock);
oops_exit();
if (kexec_should_crash(current))
crash_kexec(regs);
if (in_interrupt())
panic("Fatal exception in interrupt");
if (panic_on_oops)
panic("Fatal exception");
do_exit(SIGSEGV);
}
static inline void die_if_kernel(const char *str, struct pt_regs *regs,
long err)
{
if (!user_mode(regs))
die(str, regs, err);
}
/*
* try and fix up kernelspace address errors
* - userspace errors just cause EFAULT to be returned, resulting in SEGV
* - kernel/userspace interfaces cause a jump to an appropriate handler
* - other kernel errors are bad
*/
static void die_if_no_fixup(const char * str, struct pt_regs * regs, long err)
{
if (!user_mode(regs)) {
const struct exception_table_entry *fixup;
fixup = search_exception_tables(regs->pc);
if (fixup) {
regs->pc = fixup->fixup;
return;
}
die(str, regs, err);
}
}
static inline void sign_extend(unsigned int count, unsigned char *dst)
{
#ifdef __LITTLE_ENDIAN__
@ -900,26 +802,3 @@ void __init trap_init(void)
set_exception_table_vec(TRAP_UBC, breakpoint_trap_handler);
#endif
}
void show_stack(struct task_struct *tsk, unsigned long *sp)
{
unsigned long stack;
if (!tsk)
tsk = current;
if (tsk == current)
sp = (unsigned long *)current_stack_pointer;
else
sp = (unsigned long *)tsk->thread.sp;
stack = (unsigned long)sp;
dump_mem("Stack: ", stack, THREAD_SIZE +
(unsigned long)task_stack_page(tsk));
show_trace(tsk, sp, NULL);
}
void dump_stack(void)
{
show_stack(NULL, NULL);
}
EXPORT_SYMBOL(dump_stack);

597
arch/sh/kernel/traps_64.c
View file

@ -27,283 +27,25 @@
#include <linux/perf_event.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/atomic.h>
#include <asm/alignment.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <asm/fpu.h>
#undef DEBUG_EXCEPTION
#ifdef DEBUG_EXCEPTION
/* implemented in ../lib/dbg.c */
extern void show_excp_regs(char *fname, int trapnr, int signr,
struct pt_regs *regs);
#else
#define show_excp_regs(a, b, c, d)
#endif
static void do_unhandled_exception(int trapnr, int signr, char *str, char *fn_name,
unsigned long error_code, struct pt_regs *regs, struct task_struct *tsk);
#define DO_ERROR(trapnr, signr, str, name, tsk) \
asmlinkage void do_##name(unsigned long error_code, struct pt_regs *regs) \
{ \
do_unhandled_exception(trapnr, signr, str, __stringify(name), error_code, regs, current); \
}
static DEFINE_SPINLOCK(die_lock);
void die(const char * str, struct pt_regs * regs, long err)
{
console_verbose();
spin_lock_irq(&die_lock);
printk("%s: %lx\n", str, (err & 0xffffff));
show_regs(regs);
spin_unlock_irq(&die_lock);
do_exit(SIGSEGV);
}
static inline void die_if_kernel(const char * str, struct pt_regs * regs, long err)
{
if (!user_mode(regs))
die(str, regs, err);
}
static void die_if_no_fixup(const char * str, struct pt_regs * regs, long err)
{
if (!user_mode(regs)) {
const struct exception_table_entry *fixup;
fixup = search_exception_tables(regs->pc);
if (fixup) {
regs->pc = fixup->fixup;
return;
}
die(str, regs, err);
}
}
DO_ERROR(13, SIGILL, "illegal slot instruction", illegal_slot_inst, current)
DO_ERROR(87, SIGSEGV, "address error (exec)", address_error_exec, current)
/* Implement misaligned load/store handling for kernel (and optionally for user
mode too). Limitation : only SHmedia mode code is handled - there is no
handling at all for misaligned accesses occurring in SHcompact code yet. */
static int misaligned_fixup(struct pt_regs *regs);
asmlinkage void do_address_error_load(unsigned long error_code, struct pt_regs *regs)
{
if (misaligned_fixup(regs) < 0) {
do_unhandled_exception(7, SIGSEGV, "address error(load)",
"do_address_error_load",
error_code, regs, current);
}
return;
}
asmlinkage void do_address_error_store(unsigned long error_code, struct pt_regs *regs)
{
if (misaligned_fixup(regs) < 0) {
do_unhandled_exception(8, SIGSEGV, "address error(store)",
"do_address_error_store",
error_code, regs, current);
}
return;
}
#if defined(CONFIG_SH64_ID2815_WORKAROUND)
#define OPCODE_INVALID 0
#define OPCODE_USER_VALID 1
#define OPCODE_PRIV_VALID 2
/* getcon/putcon - requires checking which control register is referenced. */
#define OPCODE_CTRL_REG 3
/* Table of valid opcodes for SHmedia mode.
Form a 10-bit value by concatenating the major/minor opcodes i.e.
opcode[31:26,20:16]. The 6 MSBs of this value index into the following
array. The 4 LSBs select the bit-pair in the entry (bits 1:0 correspond to
LSBs==4'b0000 etc). */
static unsigned long shmedia_opcode_table[64] = {
0x55554044,0x54445055,0x15141514,0x14541414,0x00000000,0x10001000,0x01110055,0x04050015,
0x00000444,0xc0000000,0x44545515,0x40405555,0x55550015,0x10005555,0x55555505,0x04050000,
0x00000555,0x00000404,0x00040445,0x15151414,0x00000000,0x00000000,0x00000000,0x00000000,
0x00000055,0x40404444,0x00000404,0xc0009495,0x00000000,0x00000000,0x00000000,0x00000000,
0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,
0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,
0x80005050,0x04005055,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,
0x81055554,0x00000404,0x55555555,0x55555555,0x00000000,0x00000000,0x00000000,0x00000000
};
void do_reserved_inst(unsigned long error_code, struct pt_regs *regs)
{
/* Workaround SH5-101 cut2 silicon defect #2815 :
in some situations, inter-mode branches from SHcompact -> SHmedia
which should take ITLBMISS or EXECPROT exceptions at the target
falsely take RESINST at the target instead. */
unsigned long opcode = 0x6ff4fff0; /* guaranteed reserved opcode */
unsigned long pc, aligned_pc;
int get_user_error;
int trapnr = 12;
int signr = SIGILL;
char *exception_name = "reserved_instruction";
pc = regs->pc;
if ((pc & 3) == 1) {
/* SHmedia : check for defect. This requires executable vmas
to be readable too. */
aligned_pc = pc & ~3;
if (!access_ok(VERIFY_READ, aligned_pc, sizeof(unsigned long))) {
get_user_error = -EFAULT;
} else {
get_user_error = __get_user(opcode, (unsigned long *)aligned_pc);
}
if (get_user_error >= 0) {
unsigned long index, shift;
unsigned long major, minor, combined;
unsigned long reserved_field;
reserved_field = opcode & 0xf; /* These bits are currently reserved as zero in all valid opcodes */
major = (opcode >> 26) & 0x3f;
minor = (opcode >> 16) & 0xf;
combined = (major << 4) | minor;
index = major;
shift = minor << 1;
if (reserved_field == 0) {
int opcode_state = (shmedia_opcode_table[index] >> shift) & 0x3;
switch (opcode_state) {
case OPCODE_INVALID:
/* Trap. */
break;
case OPCODE_USER_VALID:
/* Restart the instruction : the branch to the instruction will now be from an RTE
not from SHcompact so the silicon defect won't be triggered. */
return;
case OPCODE_PRIV_VALID:
if (!user_mode(regs)) {
/* Should only ever get here if a module has
SHcompact code inside it. If so, the same fix up is needed. */
return; /* same reason */
}
/* Otherwise, user mode trying to execute a privileged instruction -
fall through to trap. */
break;
case OPCODE_CTRL_REG:
/* If in privileged mode, return as above. */
if (!user_mode(regs)) return;
/* In user mode ... */
if (combined == 0x9f) { /* GETCON */
unsigned long regno = (opcode >> 20) & 0x3f;
if (regno >= 62) {
return;
}
/* Otherwise, reserved or privileged control register, => trap */
} else if (combined == 0x1bf) { /* PUTCON */
unsigned long regno = (opcode >> 4) & 0x3f;
if (regno >= 62) {
return;
}
/* Otherwise, reserved or privileged control register, => trap */
} else {
/* Trap */
}
break;
default:
/* Fall through to trap. */
break;
}
}
/* fall through to normal resinst processing */
} else {
/* Error trying to read opcode. This typically means a
real fault, not a RESINST any more. So change the
codes. */
trapnr = 87;
exception_name = "address error (exec)";
signr = SIGSEGV;
}
}
do_unhandled_exception(trapnr, signr, exception_name, "do_reserved_inst", error_code, regs, current);
}
#else /* CONFIG_SH64_ID2815_WORKAROUND */
/* If the workaround isn't needed, this is just a straightforward reserved
instruction */
DO_ERROR(12, SIGILL, "reserved instruction", reserved_inst, current)
#endif /* CONFIG_SH64_ID2815_WORKAROUND */
/* Called with interrupts disabled */
asmlinkage void do_exception_error(unsigned long ex, struct pt_regs *regs)
{
show_excp_regs(__func__, -1, -1, regs);
die_if_kernel("exception", regs, ex);
}
int do_unknown_trapa(unsigned long scId, struct pt_regs *regs)
{
/* Syscall debug */
printk("System call ID error: [0x1#args:8 #syscall:16 0x%lx]\n", scId);
die_if_kernel("unknown trapa", regs, scId);
return -ENOSYS;
}
void show_stack(struct task_struct *tsk, unsigned long *sp)
{
#ifdef CONFIG_KALLSYMS
extern void sh64_unwind(struct pt_regs *regs);
struct pt_regs *regs;
regs = tsk ? tsk->thread.kregs : NULL;
sh64_unwind(regs);
#else
printk(KERN_ERR "Can't backtrace on sh64 without CONFIG_KALLSYMS\n");
#endif
}
void show_task(unsigned long *sp)
{
show_stack(NULL, sp);
}
void dump_stack(void)
{
show_task(NULL);
}
/* Needed by any user of WARN_ON in view of the defn in include/asm-sh/bug.h */
EXPORT_SYMBOL(dump_stack);
static void do_unhandled_exception(int trapnr, int signr, char *str, char *fn_name,
unsigned long error_code, struct pt_regs *regs, struct task_struct *tsk)
{
show_excp_regs(fn_name, trapnr, signr, regs);
if (user_mode(regs))
force_sig(signr, tsk);
die_if_no_fixup(str, regs, error_code);
}
static int read_opcode(unsigned long long pc, unsigned long *result_opcode, int from_user_mode)
static int read_opcode(reg_size_t pc, insn_size_t *result_opcode, int from_user_mode)
{
int get_user_error;
unsigned long aligned_pc;
unsigned long opcode;
insn_size_t opcode;
if ((pc & 3) == 1) {
/* SHmedia */
aligned_pc = pc & ~3;
if (from_user_mode) {
if (!access_ok(VERIFY_READ, aligned_pc, sizeof(unsigned long))) {
if (!access_ok(VERIFY_READ, aligned_pc, sizeof(insn_size_t))) {
get_user_error = -EFAULT;
} else {
get_user_error = __get_user(opcode, (unsigned long *)aligned_pc);
get_user_error = __get_user(opcode, (insn_size_t *)aligned_pc);
*result_opcode = opcode;
}
return get_user_error;
@ -311,7 +53,7 @@ static int read_opcode(unsigned long long pc, unsigned long *result_opcode, int
/* If the fault was in the kernel, we can either read
* this directly, or if not, we fault.
*/
*result_opcode = *(unsigned long *) aligned_pc;
*result_opcode = *(insn_size_t *)aligned_pc;
return 0;
}
} else if ((pc & 1) == 0) {
@ -337,17 +79,23 @@ static int address_is_sign_extended(__u64 a)
#endif
}
/* return -1 for fault, 0 for OK */
static int generate_and_check_address(struct pt_regs *regs,
__u32 opcode,
insn_size_t opcode,
int displacement_not_indexed,
int width_shift,
__u64 *address)
{
/* return -1 for fault, 0 for OK */
__u64 base_address, addr;
int basereg;
switch (1 << width_shift) {
case 1: inc_unaligned_byte_access(); break;
case 2: inc_unaligned_word_access(); break;
case 4: inc_unaligned_dword_access(); break;
case 8: inc_unaligned_multi_access(); break;
}
basereg = (opcode >> 20) & 0x3f;
base_address = regs->regs[basereg];
if (displacement_not_indexed) {
@ -364,28 +112,28 @@ static int generate_and_check_address(struct pt_regs *regs,
}
/* Check sign extended */
if (!address_is_sign_extended(addr)) {
if (!address_is_sign_extended(addr))
return -1;
}
/* Check accessible. For misaligned access in the kernel, assume the
address is always accessible (and if not, just fault when the
load/store gets done.) */
if (user_mode(regs)) {
if (addr >= TASK_SIZE) {
inc_unaligned_user_access();
if (addr >= TASK_SIZE)
return -1;
}
/* Do access_ok check later - it depends on whether it's a load or a store. */
}
} else
inc_unaligned_kernel_access();
*address = addr;
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, addr);
unaligned_fixups_notify(current, opcode, regs);
return 0;
}
static int user_mode_unaligned_fixup_count = 10;
static int user_mode_unaligned_fixup_enable = 1;
static int kernel_mode_unaligned_fixup_count = 32;
static void misaligned_kernel_word_load(__u64 address, int do_sign_extend, __u64 *result)
{
unsigned short x;
@ -415,7 +163,7 @@ static void misaligned_kernel_word_store(__u64 address, __u64 value)
}
static int misaligned_load(struct pt_regs *regs,
__u32 opcode,
insn_size_t opcode,
int displacement_not_indexed,
int width_shift,
int do_sign_extend)
@ -427,11 +175,8 @@ static int misaligned_load(struct pt_regs *regs,
error = generate_and_check_address(regs, opcode,
displacement_not_indexed, width_shift, &address);
if (error < 0) {
if (error < 0)
return error;
}
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, address);
destreg = (opcode >> 4) & 0x3f;
if (user_mode(regs)) {
@ -490,11 +235,10 @@ static int misaligned_load(struct pt_regs *regs,
}
return 0;
}
static int misaligned_store(struct pt_regs *regs,
__u32 opcode,
insn_size_t opcode,
int displacement_not_indexed,
int width_shift)
{
@ -505,11 +249,8 @@ static int misaligned_store(struct pt_regs *regs,
error = generate_and_check_address(regs, opcode,
displacement_not_indexed, width_shift, &address);
if (error < 0) {
if (error < 0)
return error;
}
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, address);
srcreg = (opcode >> 4) & 0x3f;
if (user_mode(regs)) {
@ -563,13 +304,12 @@ static int misaligned_store(struct pt_regs *regs,
}
return 0;
}
/* Never need to fix up misaligned FPU accesses within the kernel since that's a real
error. */
static int misaligned_fpu_load(struct pt_regs *regs,
__u32 opcode,
insn_size_t opcode,
int displacement_not_indexed,
int width_shift,
int do_paired_load)
@ -581,11 +321,8 @@ static int misaligned_fpu_load(struct pt_regs *regs,
error = generate_and_check_address(regs, opcode,
displacement_not_indexed, width_shift, &address);
if (error < 0) {
if (error < 0)
return error;
}
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, address);
destreg = (opcode >> 4) & 0x3f;
if (user_mode(regs)) {
@ -641,12 +378,10 @@ static int misaligned_fpu_load(struct pt_regs *regs,
die ("Misaligned FPU load inside kernel", regs, 0);
return -1;
}
}
static int misaligned_fpu_store(struct pt_regs *regs,
__u32 opcode,
insn_size_t opcode,
int displacement_not_indexed,
int width_shift,
int do_paired_load)
@ -658,11 +393,8 @@ static int misaligned_fpu_store(struct pt_regs *regs,
error = generate_and_check_address(regs, opcode,
displacement_not_indexed, width_shift, &address);
if (error < 0) {
if (error < 0)
return error;
}
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, address);
srcreg = (opcode >> 4) & 0x3f;
if (user_mode(regs)) {
@ -723,11 +455,13 @@ static int misaligned_fpu_store(struct pt_regs *regs,
static int misaligned_fixup(struct pt_regs *regs)
{
unsigned long opcode;
insn_size_t opcode;
int error;
int major, minor;
unsigned int user_action;
if (!user_mode_unaligned_fixup_enable)
user_action = unaligned_user_action();
if (!(user_action & UM_FIXUP))
return -1;
error = read_opcode(regs->pc, &opcode, user_mode(regs));
@ -737,23 +471,6 @@ static int misaligned_fixup(struct pt_regs *regs)
major = (opcode >> 26) & 0x3f;
minor = (opcode >> 16) & 0xf;
if (user_mode(regs) && (user_mode_unaligned_fixup_count > 0)) {
--user_mode_unaligned_fixup_count;
/* Only do 'count' worth of these reports, to remove a potential DoS against syslog */
printk("Fixing up unaligned userspace access in \"%s\" pid=%d pc=0x%08x ins=0x%08lx\n",
current->comm, task_pid_nr(current), (__u32)regs->pc, opcode);
} else if (!user_mode(regs) && (kernel_mode_unaligned_fixup_count > 0)) {
--kernel_mode_unaligned_fixup_count;
if (in_interrupt()) {
printk("Fixing up unaligned kernelspace access in interrupt pc=0x%08x ins=0x%08lx\n",
(__u32)regs->pc, opcode);
} else {
printk("Fixing up unaligned kernelspace access in \"%s\" pid=%d pc=0x%08x ins=0x%08lx\n",
current->comm, task_pid_nr(current), (__u32)regs->pc, opcode);
}
}
switch (major) {
case (0x84>>2): /* LD.W */
error = misaligned_load(regs, opcode, 1, 1, 1);
@ -878,59 +595,202 @@ static int misaligned_fixup(struct pt_regs *regs)
regs->pc += 4; /* Skip the instruction that's just been emulated */
return 0;
}
}
static ctl_table unaligned_table[] = {
{
.procname = "kernel_reports",
.data = &kernel_mode_unaligned_fixup_count,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "user_reports",
.data = &user_mode_unaligned_fixup_count,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "user_enable",
.data = &user_mode_unaligned_fixup_enable,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec},
{}
};
static ctl_table unaligned_root[] = {
{
.procname = "unaligned_fixup",
.mode = 0555,
.child = unaligned_table
},
{}
};
static ctl_table sh64_root[] = {
{
.procname = "sh64",
.mode = 0555,
.child = unaligned_root
},
{}
};
static struct ctl_table_header *sysctl_header;
static int __init init_sysctl(void)
static void do_unhandled_exception(int signr, char *str, unsigned long error,
struct pt_regs *regs)
{
sysctl_header = register_sysctl_table(sh64_root);
return 0;
if (user_mode(regs))
force_sig(signr, current);
die_if_no_fixup(str, regs, error);
}
__initcall(init_sysctl);
#define DO_ERROR(signr, str, name) \
asmlinkage void do_##name(unsigned long error_code, struct pt_regs *regs) \
{ \
do_unhandled_exception(signr, str, error_code, regs); \
}
DO_ERROR(SIGILL, "illegal slot instruction", illegal_slot_inst)
DO_ERROR(SIGSEGV, "address error (exec)", address_error_exec)
#if defined(CONFIG_SH64_ID2815_WORKAROUND)
#define OPCODE_INVALID 0
#define OPCODE_USER_VALID 1
#define OPCODE_PRIV_VALID 2
/* getcon/putcon - requires checking which control register is referenced. */
#define OPCODE_CTRL_REG 3
/* Table of valid opcodes for SHmedia mode.
Form a 10-bit value by concatenating the major/minor opcodes i.e.
opcode[31:26,20:16]. The 6 MSBs of this value index into the following
array. The 4 LSBs select the bit-pair in the entry (bits 1:0 correspond to
LSBs==4'b0000 etc). */
static unsigned long shmedia_opcode_table[64] = {
0x55554044,0x54445055,0x15141514,0x14541414,0x00000000,0x10001000,0x01110055,0x04050015,
0x00000444,0xc0000000,0x44545515,0x40405555,0x55550015,0x10005555,0x55555505,0x04050000,
0x00000555,0x00000404,0x00040445,0x15151414,0x00000000,0x00000000,0x00000000,0x00000000,
0x00000055,0x40404444,0x00000404,0xc0009495,0x00000000,0x00000000,0x00000000,0x00000000,
0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,
0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,
0x80005050,0x04005055,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,0x55555555,
0x81055554,0x00000404,0x55555555,0x55555555,0x00000000,0x00000000,0x00000000,0x00000000
};
/* Workaround SH5-101 cut2 silicon defect #2815 :
in some situations, inter-mode branches from SHcompact -> SHmedia
which should take ITLBMISS or EXECPROT exceptions at the target
falsely take RESINST at the target instead. */
void do_reserved_inst(unsigned long error_code, struct pt_regs *regs)
{
insn_size_t opcode = 0x6ff4fff0; /* guaranteed reserved opcode */
unsigned long pc, aligned_pc;
unsigned long index, shift;
unsigned long major, minor, combined;
unsigned long reserved_field;
int opcode_state;
int get_user_error;
int signr = SIGILL;
char *exception_name = "reserved_instruction";
pc = regs->pc;
/* SHcompact is not handled */
if (unlikely((pc & 3) == 0))
goto out;
/* SHmedia : check for defect. This requires executable vmas
to be readable too. */
aligned_pc = pc & ~3;
if (!access_ok(VERIFY_READ, aligned_pc, sizeof(insn_size_t)))
get_user_error = -EFAULT;
else
get_user_error = __get_user(opcode, (insn_size_t *)aligned_pc);
if (get_user_error < 0) {
/*
* Error trying to read opcode. This typically means a
* real fault, not a RESINST any more. So change the
* codes.
*/
exception_name = "address error (exec)";
signr = SIGSEGV;
goto out;
}
/* These bits are currently reserved as zero in all valid opcodes */
reserved_field = opcode & 0xf;
if (unlikely(reserved_field))
goto out; /* invalid opcode */
major = (opcode >> 26) & 0x3f;
minor = (opcode >> 16) & 0xf;
combined = (major << 4) | minor;
index = major;
shift = minor << 1;
opcode_state = (shmedia_opcode_table[index] >> shift) & 0x3;
switch (opcode_state) {
case OPCODE_INVALID:
/* Trap. */
break;
case OPCODE_USER_VALID:
/*
* Restart the instruction: the branch to the instruction
* will now be from an RTE not from SHcompact so the
* silicon defect won't be triggered.
*/
return;
case OPCODE_PRIV_VALID:
if (!user_mode(regs)) {
/*
* Should only ever get here if a module has
* SHcompact code inside it. If so, the same fix
* up is needed.
*/
return; /* same reason */
}
/*
* Otherwise, user mode trying to execute a privileged
* instruction - fall through to trap.
*/
break;
case OPCODE_CTRL_REG:
/* If in privileged mode, return as above. */
if (!user_mode(regs))
return;
/* In user mode ... */
if (combined == 0x9f) { /* GETCON */
unsigned long regno = (opcode >> 20) & 0x3f;
if (regno >= 62)
return;
/* reserved/privileged control register => trap */
} else if (combined == 0x1bf) { /* PUTCON */
unsigned long regno = (opcode >> 4) & 0x3f;
if (regno >= 62)
return;
/* reserved/privileged control register => trap */
}
break;
default:
/* Fall through to trap. */
break;
}
out:
do_unhandled_exception(signr, exception_name, error_code, regs);
}
#else /* CONFIG_SH64_ID2815_WORKAROUND */
/* If the workaround isn't needed, this is just a straightforward reserved
instruction */
DO_ERROR(SIGILL, "reserved instruction", reserved_inst)
#endif /* CONFIG_SH64_ID2815_WORKAROUND */
/* Called with interrupts disabled */
asmlinkage void do_exception_error(unsigned long ex, struct pt_regs *regs)
{
die_if_kernel("exception", regs, ex);
}
asmlinkage int do_unknown_trapa(unsigned long scId, struct pt_regs *regs)
{
/* Syscall debug */
printk("System call ID error: [0x1#args:8 #syscall:16 0x%lx]\n", scId);
die_if_kernel("unknown trapa", regs, scId);
return -ENOSYS;
}
/* Implement misaligned load/store handling for kernel (and optionally for user
mode too). Limitation : only SHmedia mode code is handled - there is no
handling at all for misaligned accesses occurring in SHcompact code yet. */
asmlinkage void do_address_error_load(unsigned long error_code, struct pt_regs *regs)
{
if (misaligned_fixup(regs) < 0)
do_unhandled_exception(SIGSEGV, "address error(load)",
error_code, regs);
}
asmlinkage void do_address_error_store(unsigned long error_code, struct pt_regs *regs)
{
if (misaligned_fixup(regs) < 0)
do_unhandled_exception(SIGSEGV, "address error(store)",
error_code, regs);
}
asmlinkage void do_debug_interrupt(unsigned long code, struct pt_regs *regs)
{
@ -942,10 +802,9 @@ asmlinkage void do_debug_interrupt(unsigned long code, struct pt_regs *regs)
of access we make to them - just go direct to their physical
addresses. */
exp_cause = peek_real_address_q(DM_EXP_CAUSE_PHY);
if (exp_cause & ~4) {
if (exp_cause & ~4)
printk("DM.EXP_CAUSE had unexpected bits set (=%08lx)\n",
(unsigned long)(exp_cause & 0xffffffff));
}
show_state();
/* Clear all DEBUGINT causes */
poke_real_address_q(DM_EXP_CAUSE_PHY, 0x0);

2
arch/sh/lib64/Makefile
View file

@ -10,7 +10,7 @@
#
# Panic should really be compiled as PIC
lib-y := udelay.o dbg.o panic.o memcpy.o memset.o \
lib-y := udelay.o panic.o memcpy.o memset.o \
copy_user_memcpy.o copy_page.o strcpy.o strlen.o
# Extracted from libgcc

248
arch/sh/lib64/dbg.c
View file

@ -1,248 +0,0 @@
/*--------------------------------------------------------------------------
--
-- Identity : Linux50 Debug Funcions
--
-- File : arch/sh/lib64/dbg.c
--
-- Copyright 2000, 2001 STMicroelectronics Limited.
-- Copyright 2004 Richard Curnow (evt_debug etc)
--
--------------------------------------------------------------------------*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <asm/mmu_context.h>
typedef u64 regType_t;
static regType_t getConfigReg(u64 id)
{
register u64 reg __asm__("r2");
asm volatile ("getcfg %1, 0, %0":"=r" (reg):"r"(id));
return (reg);
}
/* ======================================================================= */
static char *szTab[] = { "4k", "64k", "1M", "512M" };
static char *protTab[] = { "----",
"---R",
"--X-",
"--XR",
"-W--",
"-W-R",
"-WX-",
"-WXR",
"U---",
"U--R",
"U-X-",
"U-XR",
"UW--",
"UW-R",
"UWX-",
"UWXR"
};
#define ITLB_BASE 0x00000000
#define DTLB_BASE 0x00800000
#define MAX_TLBs 64
/* PTE High */
#define GET_VALID(pte) ((pte) & 0x1)
#define GET_SHARED(pte) ((pte) & 0x2)
#define GET_ASID(pte) ((pte >> 2) & 0x0ff)
#define GET_EPN(pte) ((pte) & 0xfffff000)
/* PTE Low */
#define GET_CBEHAVIOR(pte) ((pte) & 0x3)
#define GET_PAGE_SIZE(pte) szTab[((pte >> 3) & 0x3)]
#define GET_PROTECTION(pte) protTab[((pte >> 6) & 0xf)]
#define GET_PPN(pte) ((pte) & 0xfffff000)
#define PAGE_1K_MASK 0x00000000
#define PAGE_4K_MASK 0x00000010
#define PAGE_64K_MASK 0x00000080
#define MMU_PAGESIZE_MASK (PAGE_64K_MASK | PAGE_4K_MASK)
#define PAGE_1MB_MASK MMU_PAGESIZE_MASK
#define PAGE_1K (1024)
#define PAGE_4K (1024 * 4)
#define PAGE_64K (1024 * 64)
#define PAGE_1MB (1024 * 1024)
#define HOW_TO_READ_TLB_CONTENT \
"[ ID] PPN EPN ASID Share CB P.Size PROT.\n"
void print_single_tlb(unsigned long tlb, int single_print)
{
regType_t pteH;
regType_t pteL;
unsigned int valid, shared, asid, epn, cb, ppn;
char *pSize;
char *pProt;
/*
** in case of single print <single_print> is true, this implies:
** 1) print the TLB in any case also if NOT VALID
** 2) print out the header
*/
pteH = getConfigReg(tlb);
valid = GET_VALID(pteH);
if (single_print)
printk(HOW_TO_READ_TLB_CONTENT);
else if (!valid)
return;
pteL = getConfigReg(tlb + 1);
shared = GET_SHARED(pteH);
asid = GET_ASID(pteH);
epn = GET_EPN(pteH);
cb = GET_CBEHAVIOR(pteL);
pSize = GET_PAGE_SIZE(pteL);
pProt = GET_PROTECTION(pteL);
ppn = GET_PPN(pteL);
printk("[%c%2ld] 0x%08x 0x%08x %03d %02x %02x %4s %s\n",
((valid) ? ' ' : 'u'), ((tlb & 0x0ffff) / TLB_STEP),
ppn, epn, asid, shared, cb, pSize, pProt);
}
void print_dtlb(void)
{
int count;
unsigned long tlb;
printk(" ================= SH-5 D-TLBs Status ===================\n");
printk(HOW_TO_READ_TLB_CONTENT);
tlb = DTLB_BASE;
for (count = 0; count < MAX_TLBs; count++, tlb += TLB_STEP)
print_single_tlb(tlb, 0);
printk
(" =============================================================\n");
}
void print_itlb(void)
{
int count;
unsigned long tlb;
printk(" ================= SH-5 I-TLBs Status ===================\n");
printk(HOW_TO_READ_TLB_CONTENT);
tlb = ITLB_BASE;
for (count = 0; count < MAX_TLBs; count++, tlb += TLB_STEP)
print_single_tlb(tlb, 0);
printk
(" =============================================================\n");
}
void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs)
{
unsigned long long ah, al, bh, bl, ch, cl;
printk("\n");
printk("EXCEPTION - %s: task %d; Linux trap # %d; signal = %d\n",
((from) ? from : "???"), current->pid, trapnr, signr);
asm volatile ("getcon " __EXPEVT ", %0":"=r"(ah));
asm volatile ("getcon " __EXPEVT ", %0":"=r"(al));
ah = (ah) >> 32;
al = (al) & 0xffffffff;
asm volatile ("getcon " __KCR1 ", %0":"=r"(bh));
asm volatile ("getcon " __KCR1 ", %0":"=r"(bl));
bh = (bh) >> 32;
bl = (bl) & 0xffffffff;
asm volatile ("getcon " __INTEVT ", %0":"=r"(ch));
asm volatile ("getcon " __INTEVT ", %0":"=r"(cl));
ch = (ch) >> 32;
cl = (cl) & 0xffffffff;
printk("EXPE: %08Lx%08Lx KCR1: %08Lx%08Lx INTE: %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
asm volatile ("getcon " __PEXPEVT ", %0":"=r"(ah));
asm volatile ("getcon " __PEXPEVT ", %0":"=r"(al));
ah = (ah) >> 32;
al = (al) & 0xffffffff;
asm volatile ("getcon " __PSPC ", %0":"=r"(bh));
asm volatile ("getcon " __PSPC ", %0":"=r"(bl));
bh = (bh) >> 32;
bl = (bl) & 0xffffffff;
asm volatile ("getcon " __PSSR ", %0":"=r"(ch));
asm volatile ("getcon " __PSSR ", %0":"=r"(cl));
ch = (ch) >> 32;
cl = (cl) & 0xffffffff;
printk("PEXP: %08Lx%08Lx PSPC: %08Lx%08Lx PSSR: %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
ah = (regs->pc) >> 32;
al = (regs->pc) & 0xffffffff;
bh = (regs->regs[18]) >> 32;
bl = (regs->regs[18]) & 0xffffffff;
ch = (regs->regs[15]) >> 32;
cl = (regs->regs[15]) & 0xffffffff;
printk("PC : %08Lx%08Lx LINK: %08Lx%08Lx SP : %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
ah = (regs->sr) >> 32;
al = (regs->sr) & 0xffffffff;
asm volatile ("getcon " __TEA ", %0":"=r"(bh));
asm volatile ("getcon " __TEA ", %0":"=r"(bl));
bh = (bh) >> 32;
bl = (bl) & 0xffffffff;
asm volatile ("getcon " __KCR0 ", %0":"=r"(ch));
asm volatile ("getcon " __KCR0 ", %0":"=r"(cl));
ch = (ch) >> 32;
cl = (cl) & 0xffffffff;
printk("SR : %08Lx%08Lx TEA : %08Lx%08Lx KCR0: %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
ah = (regs->regs[0]) >> 32;
al = (regs->regs[0]) & 0xffffffff;
bh = (regs->regs[1]) >> 32;
bl = (regs->regs[1]) & 0xffffffff;
ch = (regs->regs[2]) >> 32;
cl = (regs->regs[2]) & 0xffffffff;
printk("R0 : %08Lx%08Lx R1 : %08Lx%08Lx R2 : %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
ah = (regs->regs[3]) >> 32;
al = (regs->regs[3]) & 0xffffffff;
bh = (regs->regs[4]) >> 32;
bl = (regs->regs[4]) & 0xffffffff;
ch = (regs->regs[5]) >> 32;
cl = (regs->regs[5]) & 0xffffffff;
printk("R3 : %08Lx%08Lx R4 : %08Lx%08Lx R5 : %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
ah = (regs->regs[6]) >> 32;
al = (regs->regs[6]) & 0xffffffff;
bh = (regs->regs[7]) >> 32;
bl = (regs->regs[7]) & 0xffffffff;
ch = (regs->regs[8]) >> 32;
cl = (regs->regs[8]) & 0xffffffff;
printk("R6 : %08Lx%08Lx R7 : %08Lx%08Lx R8 : %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
ah = (regs->regs[9]) >> 32;
al = (regs->regs[9]) & 0xffffffff;
bh = (regs->regs[10]) >> 32;
bl = (regs->regs[10]) & 0xffffffff;
ch = (regs->regs[11]) >> 32;
cl = (regs->regs[11]) & 0xffffffff;
printk("R9 : %08Lx%08Lx R10 : %08Lx%08Lx R11 : %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
printk("....\n");
ah = (regs->tregs[0]) >> 32;
al = (regs->tregs[0]) & 0xffffffff;
bh = (regs->tregs[1]) >> 32;
bl = (regs->tregs[1]) & 0xffffffff;
ch = (regs->tregs[2]) >> 32;
cl = (regs->tregs[2]) & 0xffffffff;
printk("T0 : %08Lx%08Lx T1 : %08Lx%08Lx T2 : %08Lx%08Lx\n",
ah, al, bh, bl, ch, cl);
printk("....\n");
print_dtlb();
print_itlb();
}

2
arch/sh/mm/tlb-sh5.c
View file

@ -17,7 +17,7 @@
/**
* sh64_tlb_init - Perform initial setup for the DTLB and ITLB.
*/
int __init sh64_tlb_init(void)
int __cpuinit sh64_tlb_init(void)
{
/* Assign some sane DTLB defaults */
cpu_data->dtlb.entries = 64;

1
drivers/sh/Kconfig
View file

@ -1,5 +1,6 @@
menu "SuperH / SH-Mobile Driver Options"
source "drivers/sh/intc/Kconfig"
source "drivers/sh/pfc/Kconfig"
endmenu

3
drivers/sh/Makefile
View file

@ -5,6 +5,7 @@ obj-y := intc/
obj-$(CONFIG_HAVE_CLK) += clk/
obj-$(CONFIG_MAPLE) += maple/
obj-$(CONFIG_SH_PFC) += pfc/
obj-$(CONFIG_SUPERHYWAY) += superhyway/
obj-$(CONFIG_GENERIC_GPIO) += pfc.o
obj-y += pm_runtime.o

335
drivers/sh/clk/cpg.c
View file

@ -14,6 +14,8 @@
#include <linux/io.h>
#include <linux/sh_clk.h>
#define CPG_CKSTP_BIT BIT(8)
static unsigned int sh_clk_read(struct clk *clk)
{
if (clk->flags & CLK_ENABLE_REG_8BIT)
@ -66,71 +68,43 @@ int __init sh_clk_mstp_register(struct clk *clks, int nr)
return ret;
}
/*
* Div/mult table lookup helpers
*/
static inline struct clk_div_table *clk_to_div_table(struct clk *clk)
{
return clk->priv;
}
static inline struct clk_div_mult_table *clk_to_div_mult_table(struct clk *clk)
{
return clk_to_div_table(clk)->div_mult_table;
}
/*
* Common div ops
*/
static long sh_clk_div_round_rate(struct clk *clk, unsigned long rate)
{
return clk_rate_table_round(clk, clk->freq_table, rate);
}
static int sh_clk_div6_divisors[64] = {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
};
static struct clk_div_mult_table sh_clk_div6_table = {
.divisors = sh_clk_div6_divisors,
.nr_divisors = ARRAY_SIZE(sh_clk_div6_divisors),
};
static unsigned long sh_clk_div6_recalc(struct clk *clk)
static unsigned long sh_clk_div_recalc(struct clk *clk)
{
struct clk_div_mult_table *table = &sh_clk_div6_table;
struct clk_div_mult_table *table = clk_to_div_mult_table(clk);
unsigned int idx;
clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
table, NULL);
table, clk->arch_flags ? &clk->arch_flags : NULL);
idx = sh_clk_read(clk) & 0x003f;
idx = (sh_clk_read(clk) >> clk->enable_bit) & clk->div_mask;
return clk->freq_table[idx].frequency;
}
static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent)
{
struct clk_div_mult_table *table = &sh_clk_div6_table;
u32 value;
int ret, i;
if (!clk->parent_table || !clk->parent_num)
return -EINVAL;
/* Search the parent */
for (i = 0; i < clk->parent_num; i++)
if (clk->parent_table[i] == parent)
break;
if (i == clk->parent_num)
return -ENODEV;
ret = clk_reparent(clk, parent);
if (ret < 0)
return ret;
value = sh_clk_read(clk) &
~(((1 << clk->src_width) - 1) << clk->src_shift);
sh_clk_write(value | (i << clk->src_shift), clk);
/* Rebuild the frequency table */
clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
table, NULL);
return 0;
}
static int sh_clk_div6_set_rate(struct clk *clk, unsigned long rate)
static int sh_clk_div_set_rate(struct clk *clk, unsigned long rate)
{
struct clk_div_table *dt = clk_to_div_table(clk);
unsigned long value;
int idx;
@ -139,51 +113,53 @@ static int sh_clk_div6_set_rate(struct clk *clk, unsigned long rate)
return idx;
value = sh_clk_read(clk);
value &= ~0x3f;
value |= idx;
value &= ~(clk->div_mask << clk->enable_bit);
value |= (idx << clk->enable_bit);
sh_clk_write(value, clk);
/* XXX: Should use a post-change notifier */
if (dt->kick)
dt->kick(clk);
return 0;
}
static int sh_clk_div6_enable(struct clk *clk)
static int sh_clk_div_enable(struct clk *clk)
{
unsigned long value;
int ret;
ret = sh_clk_div6_set_rate(clk, clk->rate);
if (ret == 0) {
value = sh_clk_read(clk);
value &= ~0x100; /* clear stop bit to enable clock */
sh_clk_write(value, clk);
}
return ret;
sh_clk_write(sh_clk_read(clk) & ~CPG_CKSTP_BIT, clk);
return 0;
}
static void sh_clk_div6_disable(struct clk *clk)
static void sh_clk_div_disable(struct clk *clk)
{
unsigned long value;
unsigned int val;
value = sh_clk_read(clk);
value |= 0x100; /* stop clock */
value |= 0x3f; /* VDIV bits must be non-zero, overwrite divider */
sh_clk_write(value, clk);
val = sh_clk_read(clk);
val |= CPG_CKSTP_BIT;
/*
* div6 clocks require the divisor field to be non-zero or the
* above CKSTP toggle silently fails. Ensure that the divisor
* array is reset to its initial state on disable.
*/
if (clk->flags & CLK_MASK_DIV_ON_DISABLE)
val |= clk->div_mask;
sh_clk_write(val, clk);
}
static struct sh_clk_ops sh_clk_div6_clk_ops = {
.recalc = sh_clk_div6_recalc,
static struct sh_clk_ops sh_clk_div_clk_ops = {
.recalc = sh_clk_div_recalc,
.set_rate = sh_clk_div_set_rate,
.round_rate = sh_clk_div_round_rate,
.set_rate = sh_clk_div6_set_rate,
.enable = sh_clk_div6_enable,
.disable = sh_clk_div6_disable,
};
static struct sh_clk_ops sh_clk_div6_reparent_clk_ops = {
.recalc = sh_clk_div6_recalc,
static struct sh_clk_ops sh_clk_div_enable_clk_ops = {
.recalc = sh_clk_div_recalc,
.set_rate = sh_clk_div_set_rate,
.round_rate = sh_clk_div_round_rate,
.set_rate = sh_clk_div6_set_rate,
.enable = sh_clk_div6_enable,
.disable = sh_clk_div6_disable,
.set_parent = sh_clk_div6_set_parent,
.enable = sh_clk_div_enable,
.disable = sh_clk_div_disable,
};
static int __init sh_clk_init_parent(struct clk *clk)
@ -218,12 +194,12 @@ static int __init sh_clk_init_parent(struct clk *clk)
return 0;
}
static int __init sh_clk_div6_register_ops(struct clk *clks, int nr,
struct sh_clk_ops *ops)
static int __init sh_clk_div_register_ops(struct clk *clks, int nr,
struct clk_div_table *table, struct sh_clk_ops *ops)
{
struct clk *clkp;
void *freq_table;
int nr_divs = sh_clk_div6_table.nr_divisors;
int nr_divs = table->div_mult_table->nr_divisors;
int freq_table_size = sizeof(struct cpufreq_frequency_table);
int ret = 0;
int k;
@ -231,7 +207,7 @@ static int __init sh_clk_div6_register_ops(struct clk *clks, int nr,
freq_table_size *= (nr_divs + 1);
freq_table = kzalloc(freq_table_size * nr, GFP_KERNEL);
if (!freq_table) {
pr_err("sh_clk_div6_register: unable to alloc memory\n");
pr_err("%s: unable to alloc memory\n", __func__);
return -ENOMEM;
}
@ -239,47 +215,98 @@ static int __init sh_clk_div6_register_ops(struct clk *clks, int nr,
clkp = clks + k;
clkp->ops = ops;
clkp->priv = table;
clkp->freq_table = freq_table + (k * freq_table_size);
clkp->freq_table[nr_divs].frequency = CPUFREQ_TABLE_END;
ret = clk_register(clkp);
if (ret < 0)
break;
ret = sh_clk_init_parent(clkp);
ret = clk_register(clkp);
if (ret == 0)
ret = sh_clk_init_parent(clkp);
}
return ret;
}
/*
* div6 support
*/
static int sh_clk_div6_divisors[64] = {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
};
static struct clk_div_mult_table div6_div_mult_table = {
.divisors = sh_clk_div6_divisors,
.nr_divisors = ARRAY_SIZE(sh_clk_div6_divisors),
};
static struct clk_div_table sh_clk_div6_table = {
.div_mult_table = &div6_div_mult_table,
};
static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent)
{
struct clk_div_mult_table *table = clk_to_div_mult_table(clk);
u32 value;
int ret, i;
if (!clk->parent_table || !clk->parent_num)
return -EINVAL;
/* Search the parent */
for (i = 0; i < clk->parent_num; i++)
if (clk->parent_table[i] == parent)
break;
if (i == clk->parent_num)
return -ENODEV;
ret = clk_reparent(clk, parent);
if (ret < 0)
return ret;
value = sh_clk_read(clk) &
~(((1 << clk->src_width) - 1) << clk->src_shift);
sh_clk_write(value | (i << clk->src_shift), clk);
/* Rebuild the frequency table */
clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
table, NULL);
return 0;
}
static struct sh_clk_ops sh_clk_div6_reparent_clk_ops = {
.recalc = sh_clk_div_recalc,
.round_rate = sh_clk_div_round_rate,
.set_rate = sh_clk_div_set_rate,
.enable = sh_clk_div_enable,
.disable = sh_clk_div_disable,
.set_parent = sh_clk_div6_set_parent,
};
int __init sh_clk_div6_register(struct clk *clks, int nr)
{
return sh_clk_div6_register_ops(clks, nr, &sh_clk_div6_clk_ops);
return sh_clk_div_register_ops(clks, nr, &sh_clk_div6_table,
&sh_clk_div_enable_clk_ops);
}
int __init sh_clk_div6_reparent_register(struct clk *clks, int nr)
{
return sh_clk_div6_register_ops(clks, nr,
&sh_clk_div6_reparent_clk_ops);
}
static unsigned long sh_clk_div4_recalc(struct clk *clk)
{
struct clk_div4_table *d4t = clk->priv;
struct clk_div_mult_table *table = d4t->div_mult_table;
unsigned int idx;
clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
table, &clk->arch_flags);
idx = (sh_clk_read(clk) >> clk->enable_bit) & 0x000f;
return clk->freq_table[idx].frequency;
return sh_clk_div_register_ops(clks, nr, &sh_clk_div6_table,
&sh_clk_div6_reparent_clk_ops);
}
/*
* div4 support
*/
static int sh_clk_div4_set_parent(struct clk *clk, struct clk *parent)
{
struct clk_div4_table *d4t = clk->priv;
struct clk_div_mult_table *table = d4t->div_mult_table;
struct clk_div_mult_table *table = clk_to_div_mult_table(clk);
u32 value;
int ret;
@ -306,107 +333,31 @@ static int sh_clk_div4_set_parent(struct clk *clk, struct clk *parent)
return 0;
}
static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate)
{
struct clk_div4_table *d4t = clk->priv;
unsigned long value;
int idx = clk_rate_table_find(clk, clk->freq_table, rate);
if (idx < 0)
return idx;
value = sh_clk_read(clk);
value &= ~(0xf << clk->enable_bit);
value |= (idx << clk->enable_bit);
sh_clk_write(value, clk);
if (d4t->kick)
d4t->kick(clk);
return 0;
}
static int sh_clk_div4_enable(struct clk *clk)
{
sh_clk_write(sh_clk_read(clk) & ~(1 << 8), clk);
return 0;
}
static void sh_clk_div4_disable(struct clk *clk)
{
sh_clk_write(sh_clk_read(clk) | (1 << 8), clk);
}
static struct sh_clk_ops sh_clk_div4_clk_ops = {
.recalc = sh_clk_div4_recalc,
.set_rate = sh_clk_div4_set_rate,
.round_rate = sh_clk_div_round_rate,
};
static struct sh_clk_ops sh_clk_div4_enable_clk_ops = {
.recalc = sh_clk_div4_recalc,
.set_rate = sh_clk_div4_set_rate,
.round_rate = sh_clk_div_round_rate,
.enable = sh_clk_div4_enable,
.disable = sh_clk_div4_disable,
};
static struct sh_clk_ops sh_clk_div4_reparent_clk_ops = {
.recalc = sh_clk_div4_recalc,
.set_rate = sh_clk_div4_set_rate,
.recalc = sh_clk_div_recalc,
.set_rate = sh_clk_div_set_rate,
.round_rate = sh_clk_div_round_rate,
.enable = sh_clk_div4_enable,
.disable = sh_clk_div4_disable,
.enable = sh_clk_div_enable,
.disable = sh_clk_div_disable,
.set_parent = sh_clk_div4_set_parent,
};
static int __init sh_clk_div4_register_ops(struct clk *clks, int nr,
struct clk_div4_table *table, struct sh_clk_ops *ops)
{
struct clk *clkp;
void *freq_table;
int nr_divs = table->div_mult_table->nr_divisors;
int freq_table_size = sizeof(struct cpufreq_frequency_table);
int ret = 0;
int k;
freq_table_size *= (nr_divs + 1);
freq_table = kzalloc(freq_table_size * nr, GFP_KERNEL);
if (!freq_table) {
pr_err("sh_clk_div4_register: unable to alloc memory\n");
return -ENOMEM;
}
for (k = 0; !ret && (k < nr); k++) {
clkp = clks + k;
clkp->ops = ops;
clkp->priv = table;
clkp->freq_table = freq_table + (k * freq_table_size);
clkp->freq_table[nr_divs].frequency = CPUFREQ_TABLE_END;
ret = clk_register(clkp);
}
return ret;
}
int __init sh_clk_div4_register(struct clk *clks, int nr,
struct clk_div4_table *table)
{
return sh_clk_div4_register_ops(clks, nr, table, &sh_clk_div4_clk_ops);
return sh_clk_div_register_ops(clks, nr, table, &sh_clk_div_clk_ops);
}
int __init sh_clk_div4_enable_register(struct clk *clks, int nr,
struct clk_div4_table *table)
{
return sh_clk_div4_register_ops(clks, nr, table,
&sh_clk_div4_enable_clk_ops);
return sh_clk_div_register_ops(clks, nr, table,
&sh_clk_div_enable_clk_ops);
}
int __init sh_clk_div4_reparent_register(struct clk *clks, int nr,
struct clk_div4_table *table)
{
return sh_clk_div4_register_ops(clks, nr, table,
&sh_clk_div4_reparent_clk_ops);
return sh_clk_div_register_ops(clks, nr, table,
&sh_clk_div4_reparent_clk_ops);
}

2
drivers/sh/intc/Makefile
View file

@ -1,4 +1,4 @@
obj-y := access.o chip.o core.o dynamic.o handle.o virq.o
obj-y := access.o chip.o core.o handle.o virq.o
obj-$(CONFIG_INTC_BALANCING) += balancing.o
obj-$(CONFIG_INTC_USERIMASK) += userimask.o

57
drivers/sh/intc/dynamic.c
View file

@ -1,57 +0,0 @@
/*
* Dynamic IRQ management
*
* Copyright (C) 2010 Paul Mundt
*
* Modelled after arch/x86/kernel/apic/io_apic.c
*
* 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.
*/
#define pr_fmt(fmt) "intc: " fmt
#include <linux/irq.h>
#include <linux/bitmap.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include "internals.h" /* only for activate_irq() damage.. */
/*
* The IRQ bitmap provides a global map of bound IRQ vectors for a
* given platform. Allocation of IRQs are either static through the CPU
* vector map, or dynamic in the case of board mux vectors or MSI.
*
* As this is a central point for all IRQ controllers on the system,
* each of the available sources are mapped out here. This combined with
* sparseirq makes it quite trivial to keep the vector map tightly packed
* when dynamically creating IRQs, as well as tying in to otherwise
* unused irq_desc positions in the sparse array.
*/
/*
* Dynamic IRQ allocation and deallocation
*/
unsigned int create_irq_nr(unsigned int irq_want, int node)
{
int irq = irq_alloc_desc_at(irq_want, node);
if (irq < 0)
return 0;
activate_irq(irq);
return irq;
}
int create_irq(void)
{
int irq = irq_alloc_desc(numa_node_id());
if (irq >= 0)
activate_irq(irq);
return irq;
}
void destroy_irq(unsigned int irq)
{
irq_free_desc(irq);
}

4
drivers/sh/intc/virq.c
View file

@ -219,12 +219,14 @@ static void __init intc_subgroup_map(struct intc_desc_int *d)
if (radix_tree_deref_retry(entry))
goto restart;
irq = create_irq();
irq = irq_alloc_desc(numa_node_id());
if (unlikely(irq < 0)) {
pr_err("no more free IRQs, bailing..\n");
break;
}
activate_irq(irq);
pr_info("Setting up a chained VIRQ from %d -> %d\n",
irq, entry->pirq);

739
drivers/sh/pfc.c
View file

@ -1,739 +0,0 @@
/*
* Pinmuxed GPIO support for SuperH.
*
* Copyright (C) 2008 Magnus Damm
*
* 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/bitops.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/ioport.h>
static void pfc_iounmap(struct pinmux_info *pip)
{
int k;
for (k = 0; k < pip->num_resources; k++)
if (pip->window[k].virt)
iounmap(pip->window[k].virt);
kfree(pip->window);
pip->window = NULL;
}
static int pfc_ioremap(struct pinmux_info *pip)
{
struct resource *res;
int k;
if (!pip->num_resources)
return 0;
pip->window = kzalloc(pip->num_resources * sizeof(*pip->window),
GFP_NOWAIT);
if (!pip->window)
goto err1;
for (k = 0; k < pip->num_resources; k++) {
res = pip->resource + k;
WARN_ON(resource_type(res) != IORESOURCE_MEM);
pip->window[k].phys = res->start;
pip->window[k].size = resource_size(res);
pip->window[k].virt = ioremap_nocache(res->start,
resource_size(res));
if (!pip->window[k].virt)
goto err2;
}
return 0;
err2:
pfc_iounmap(pip);
err1:
return -1;
}
static void __iomem *pfc_phys_to_virt(struct pinmux_info *pip,
unsigned long address)
{
struct pfc_window *window;
int k;
/* scan through physical windows and convert address */
for (k = 0; k < pip->num_resources; k++) {
window = pip->window + k;
if (address < window->phys)
continue;
if (address >= (window->phys + window->size))
continue;
return window->virt + (address - window->phys);
}
/* no windows defined, register must be 1:1 mapped virt:phys */
return (void __iomem *)address;
}
static int enum_in_range(pinmux_enum_t enum_id, struct pinmux_range *r)
{
if (enum_id < r->begin)
return 0;
if (enum_id > r->end)
return 0;
return 1;
}
static unsigned long gpio_read_raw_reg(void __iomem *mapped_reg,
unsigned long reg_width)
{
switch (reg_width) {
case 8:
return ioread8(mapped_reg);
case 16:
return ioread16(mapped_reg);
case 32:
return ioread32(mapped_reg);
}
BUG();
return 0;
}
static void gpio_write_raw_reg(void __iomem *mapped_reg,
unsigned long reg_width,
unsigned long data)
{
switch (reg_width) {
case 8:
iowrite8(data, mapped_reg);
return;
case 16:
iowrite16(data, mapped_reg);
return;
case 32:
iowrite32(data, mapped_reg);
return;
}
BUG();
}
static int gpio_read_bit(struct pinmux_data_reg *dr,
unsigned long in_pos)
{
unsigned long pos;
pos = dr->reg_width - (in_pos + 1);
pr_debug("read_bit: addr = %lx, pos = %ld, "
"r_width = %ld\n", dr->reg, pos, dr->reg_width);
return (gpio_read_raw_reg(dr->mapped_reg, dr->reg_width) >> pos) & 1;
}
static void gpio_write_bit(struct pinmux_data_reg *dr,
unsigned long in_pos, unsigned long value)
{
unsigned long pos;
pos = dr->reg_width - (in_pos + 1);
pr_debug("write_bit addr = %lx, value = %d, pos = %ld, "
"r_width = %ld\n",
dr->reg, !!value, pos, dr->reg_width);
if (value)
set_bit(pos, &dr->reg_shadow);
else
clear_bit(pos, &dr->reg_shadow);
gpio_write_raw_reg(dr->mapped_reg, dr->reg_width, dr->reg_shadow);
}
static void config_reg_helper(struct pinmux_info *gpioc,
struct pinmux_cfg_reg *crp,
unsigned long in_pos,
void __iomem **mapped_regp,
unsigned long *maskp,
unsigned long *posp)
{
int k;
*mapped_regp = pfc_phys_to_virt(gpioc, crp->reg);
if (crp->field_width) {
*maskp = (1 << crp->field_width) - 1;
*posp = crp->reg_width - ((in_pos + 1) * crp->field_width);
} else {
*maskp = (1 << crp->var_field_width[in_pos]) - 1;
*posp = crp->reg_width;
for (k = 0; k <= in_pos; k++)
*posp -= crp->var_field_width[k];
}
}
static int read_config_reg(struct pinmux_info *gpioc,
struct pinmux_cfg_reg *crp,
unsigned long field)
{
void __iomem *mapped_reg;
unsigned long mask, pos;
config_reg_helper(gpioc, crp, field, &mapped_reg, &mask, &pos);
pr_debug("read_reg: addr = %lx, field = %ld, "
"r_width = %ld, f_width = %ld\n",
crp->reg, field, crp->reg_width, crp->field_width);
return (gpio_read_raw_reg(mapped_reg, crp->reg_width) >> pos) & mask;
}
static void write_config_reg(struct pinmux_info *gpioc,
struct pinmux_cfg_reg *crp,
unsigned long field, unsigned long value)
{
void __iomem *mapped_reg;
unsigned long mask, pos, data;
config_reg_helper(gpioc, crp, field, &mapped_reg, &mask, &pos);
pr_debug("write_reg addr = %lx, value = %ld, field = %ld, "
"r_width = %ld, f_width = %ld\n",
crp->reg, value, field, crp->reg_width, crp->field_width);
mask = ~(mask << pos);
value = value << pos;
data = gpio_read_raw_reg(mapped_reg, crp->reg_width);
data &= mask;
data |= value;
if (gpioc->unlock_reg)
gpio_write_raw_reg(pfc_phys_to_virt(gpioc, gpioc->unlock_reg),
32, ~data);
gpio_write_raw_reg(mapped_reg, crp->reg_width, data);
}
static int setup_data_reg(struct pinmux_info *gpioc, unsigned gpio)
{
struct pinmux_gpio *gpiop = &gpioc->gpios[gpio];
struct pinmux_data_reg *data_reg;
int k, n;
if (!enum_in_range(gpiop->enum_id, &gpioc->data))
return -1;
k = 0;
while (1) {
data_reg = gpioc->data_regs + k;
if (!data_reg->reg_width)
break;
data_reg->mapped_reg = pfc_phys_to_virt(gpioc, data_reg->reg);
for (n = 0; n < data_reg->reg_width; n++) {
if (data_reg->enum_ids[n] == gpiop->enum_id) {
gpiop->flags &= ~PINMUX_FLAG_DREG;
gpiop->flags |= (k << PINMUX_FLAG_DREG_SHIFT);
gpiop->flags &= ~PINMUX_FLAG_DBIT;
gpiop->flags |= (n << PINMUX_FLAG_DBIT_SHIFT);
return 0;
}
}
k++;
}
BUG();
return -1;
}
static void setup_data_regs(struct pinmux_info *gpioc)
{
struct pinmux_data_reg *drp;
int k;
for (k = gpioc->first_gpio; k <= gpioc->last_gpio; k++)
setup_data_reg(gpioc, k);
k = 0;
while (1) {
drp = gpioc->data_regs + k;
if (!drp->reg_width)
break;
drp->reg_shadow = gpio_read_raw_reg(drp->mapped_reg,
drp->reg_width);
k++;
}
}
static int get_data_reg(struct pinmux_info *gpioc, unsigned gpio,
struct pinmux_data_reg **drp, int *bitp)
{
struct pinmux_gpio *gpiop = &gpioc->gpios[gpio];
int k, n;
if (!enum_in_range(gpiop->enum_id, &gpioc->data))
return -1;
k = (gpiop->flags & PINMUX_FLAG_DREG) >> PINMUX_FLAG_DREG_SHIFT;
n = (gpiop->flags & PINMUX_FLAG_DBIT) >> PINMUX_FLAG_DBIT_SHIFT;
*drp = gpioc->data_regs + k;
*bitp = n;
return 0;
}
static int get_config_reg(struct pinmux_info *gpioc, pinmux_enum_t enum_id,
struct pinmux_cfg_reg **crp,
int *fieldp, int *valuep,
unsigned long **cntp)
{
struct pinmux_cfg_reg *config_reg;
unsigned long r_width, f_width, curr_width, ncomb;
int k, m, n, pos, bit_pos;
k = 0;
while (1) {
config_reg = gpioc->cfg_regs + k;
r_width = config_reg->reg_width;
f_width = config_reg->field_width;
if (!r_width)
break;
pos = 0;
m = 0;
for (bit_pos = 0; bit_pos < r_width; bit_pos += curr_width) {
if (f_width)
curr_width = f_width;
else
curr_width = config_reg->var_field_width[m];
ncomb = 1 << curr_width;
for (n = 0; n < ncomb; n++) {
if (config_reg->enum_ids[pos + n] == enum_id) {
*crp = config_reg;
*fieldp = m;
*valuep = n;
*cntp = &config_reg->cnt[m];
return 0;
}
}
pos += ncomb;
m++;
}
k++;
}
return -1;
}
static int get_gpio_enum_id(struct pinmux_info *gpioc, unsigned gpio,
int pos, pinmux_enum_t *enum_idp)
{
pinmux_enum_t enum_id = gpioc->gpios[gpio].enum_id;
pinmux_enum_t *data = gpioc->gpio_data;
int k;
if (!enum_in_range(enum_id, &gpioc->data)) {
if (!enum_in_range(enum_id, &gpioc->mark)) {
pr_err("non data/mark enum_id for gpio %d\n", gpio);
return -1;
}
}
if (pos) {
*enum_idp = data[pos + 1];
return pos + 1;
}
for (k = 0; k < gpioc->gpio_data_size; k++) {
if (data[k] == enum_id) {
*enum_idp = data[k + 1];
return k + 1;
}
}
pr_err("cannot locate data/mark enum_id for gpio %d\n", gpio);
return -1;
}
enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE };
static int pinmux_config_gpio(struct pinmux_info *gpioc, unsigned gpio,
int pinmux_type, int cfg_mode)
{
struct pinmux_cfg_reg *cr = NULL;
pinmux_enum_t enum_id;
struct pinmux_range *range;
int in_range, pos, field, value;
unsigned long *cntp;
switch (pinmux_type) {
case PINMUX_TYPE_FUNCTION:
range = NULL;
break;
case PINMUX_TYPE_OUTPUT:
range = &gpioc->output;
break;
case PINMUX_TYPE_INPUT:
range = &gpioc->input;
break;
case PINMUX_TYPE_INPUT_PULLUP:
range = &gpioc->input_pu;
break;
case PINMUX_TYPE_INPUT_PULLDOWN:
range = &gpioc->input_pd;
break;
default:
goto out_err;
}
pos = 0;
enum_id = 0;
field = 0;
value = 0;
while (1) {
pos = get_gpio_enum_id(gpioc, gpio, pos, &enum_id);
if (pos <= 0)
goto out_err;
if (!enum_id)
break;
/* first check if this is a function enum */
in_range = enum_in_range(enum_id, &gpioc->function);
if (!in_range) {
/* not a function enum */
if (range) {
/*
* other range exists, so this pin is
* a regular GPIO pin that now is being
* bound to a specific direction.
*
* for this case we only allow function enums
* and the enums that match the other range.
*/
in_range = enum_in_range(enum_id, range);
/*
* special case pass through for fixed
* input-only or output-only pins without
* function enum register association.
*/
if (in_range && enum_id == range->force)
continue;
} else {
/*
* no other range exists, so this pin
* must then be of the function type.
*
* allow function type pins to select
* any combination of function/in/out
* in their MARK lists.
*/
in_range = 1;
}
}
if (!in_range)
continue;
if (get_config_reg(gpioc, enum_id, &cr,
&field, &value, &cntp) != 0)
goto out_err;
switch (cfg_mode) {
case GPIO_CFG_DRYRUN:
if (!*cntp ||
(read_config_reg(gpioc, cr, field) != value))
continue;
break;
case GPIO_CFG_REQ:
write_config_reg(gpioc, cr, field, value);
*cntp = *cntp + 1;
break;
case GPIO_CFG_FREE:
*cntp = *cntp - 1;
break;
}
}
return 0;
out_err:
return -1;
}
static DEFINE_SPINLOCK(gpio_lock);
static struct pinmux_info *chip_to_pinmux(struct gpio_chip *chip)
{
return container_of(chip, struct pinmux_info, chip);
}
static int sh_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct pinmux_info *gpioc = chip_to_pinmux(chip);
struct pinmux_data_reg *dummy;
unsigned long flags;
int i, ret, pinmux_type;
ret = -EINVAL;
if (!gpioc)
goto err_out;
spin_lock_irqsave(&gpio_lock, flags);
if ((gpioc->gpios[offset].flags & PINMUX_FLAG_TYPE) != PINMUX_TYPE_NONE)
goto err_unlock;
/* setup pin function here if no data is associated with pin */
if (get_data_reg(gpioc, offset, &dummy, &i) != 0)
pinmux_type = PINMUX_TYPE_FUNCTION;
else
pinmux_type = PINMUX_TYPE_GPIO;
if (pinmux_type == PINMUX_TYPE_FUNCTION) {
if (pinmux_config_gpio(gpioc, offset,
pinmux_type,
GPIO_CFG_DRYRUN) != 0)
goto err_unlock;
if (pinmux_config_gpio(gpioc, offset,
pinmux_type,
GPIO_CFG_REQ) != 0)
BUG();
}
gpioc->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
gpioc->gpios[offset].flags |= pinmux_type;
ret = 0;
err_unlock:
spin_unlock_irqrestore(&gpio_lock, flags);
err_out:
return ret;
}
static void sh_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct pinmux_info *gpioc = chip_to_pinmux(chip);
unsigned long flags;
int pinmux_type;
if (!gpioc)
return;
spin_lock_irqsave(&gpio_lock, flags);
pinmux_type = gpioc->gpios[offset].flags & PINMUX_FLAG_TYPE;
pinmux_config_gpio(gpioc, offset, pinmux_type, GPIO_CFG_FREE);
gpioc->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
gpioc->gpios[offset].flags |= PINMUX_TYPE_NONE;
spin_unlock_irqrestore(&gpio_lock, flags);
}
static int pinmux_direction(struct pinmux_info *gpioc,
unsigned gpio, int new_pinmux_type)
{
int pinmux_type;
int ret = -EINVAL;
if (!gpioc)
goto err_out;
pinmux_type = gpioc->gpios[gpio].flags & PINMUX_FLAG_TYPE;
switch (pinmux_type) {
case PINMUX_TYPE_GPIO:
break;
case PINMUX_TYPE_OUTPUT:
case PINMUX_TYPE_INPUT:
case PINMUX_TYPE_INPUT_PULLUP:
case PINMUX_TYPE_INPUT_PULLDOWN:
pinmux_config_gpio(gpioc, gpio, pinmux_type, GPIO_CFG_FREE);
break;
default:
goto err_out;
}
if (pinmux_config_gpio(gpioc, gpio,
new_pinmux_type,
GPIO_CFG_DRYRUN) != 0)
goto err_out;
if (pinmux_config_gpio(gpioc, gpio,
new_pinmux_type,
GPIO_CFG_REQ) != 0)
BUG();
gpioc->gpios[gpio].flags &= ~PINMUX_FLAG_TYPE;
gpioc->gpios[gpio].flags |= new_pinmux_type;
ret = 0;
err_out:
return ret;
}
static int sh_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
struct pinmux_info *gpioc = chip_to_pinmux(chip);
unsigned long flags;
int ret;
spin_lock_irqsave(&gpio_lock, flags);
ret = pinmux_direction(gpioc, offset, PINMUX_TYPE_INPUT);
spin_unlock_irqrestore(&gpio_lock, flags);
return ret;
}
static void sh_gpio_set_value(struct pinmux_info *gpioc,
unsigned gpio, int value)
{
struct pinmux_data_reg *dr = NULL;
int bit = 0;
if (!gpioc || get_data_reg(gpioc, gpio, &dr, &bit) != 0)
BUG();
else
gpio_write_bit(dr, bit, value);
}
static int sh_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
struct pinmux_info *gpioc = chip_to_pinmux(chip);
unsigned long flags;
int ret;
sh_gpio_set_value(gpioc, offset, value);
spin_lock_irqsave(&gpio_lock, flags);
ret = pinmux_direction(gpioc, offset, PINMUX_TYPE_OUTPUT);
spin_unlock_irqrestore(&gpio_lock, flags);
return ret;
}
static int sh_gpio_get_value(struct pinmux_info *gpioc, unsigned gpio)
{
struct pinmux_data_reg *dr = NULL;
int bit = 0;
if (!gpioc || get_data_reg(gpioc, gpio, &dr, &bit) != 0)
return -EINVAL;
return gpio_read_bit(dr, bit);
}
static int sh_gpio_get(struct gpio_chip *chip, unsigned offset)
{
return sh_gpio_get_value(chip_to_pinmux(chip), offset);
}
static void sh_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
sh_gpio_set_value(chip_to_pinmux(chip), offset, value);
}
static int sh_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
struct pinmux_info *gpioc = chip_to_pinmux(chip);
pinmux_enum_t enum_id;
pinmux_enum_t *enum_ids;
int i, k, pos;
pos = 0;
enum_id = 0;
while (1) {
pos = get_gpio_enum_id(gpioc, offset, pos, &enum_id);
if (pos <= 0 || !enum_id)
break;
for (i = 0; i < gpioc->gpio_irq_size; i++) {
enum_ids = gpioc->gpio_irq[i].enum_ids;
for (k = 0; enum_ids[k]; k++) {
if (enum_ids[k] == enum_id)
return gpioc->gpio_irq[i].irq;
}
}
}
return -ENOSYS;
}
int register_pinmux(struct pinmux_info *pip)
{
struct gpio_chip *chip = &pip->chip;
int ret;
pr_info("%s handling gpio %d -> %d\n",
pip->name, pip->first_gpio, pip->last_gpio);
ret = pfc_ioremap(pip);
if (ret < 0)
return ret;
setup_data_regs(pip);
chip->request = sh_gpio_request;
chip->free = sh_gpio_free;
chip->direction_input = sh_gpio_direction_input;
chip->get = sh_gpio_get;
chip->direction_output = sh_gpio_direction_output;
chip->set = sh_gpio_set;
chip->to_irq = sh_gpio_to_irq;
WARN_ON(pip->first_gpio != 0); /* needs testing */
chip->label = pip->name;
chip->owner = THIS_MODULE;
chip->base = pip->first_gpio;
chip->ngpio = (pip->last_gpio - pip->first_gpio) + 1;
ret = gpiochip_add(chip);
if (ret < 0)
pfc_iounmap(pip);
return ret;
}
int unregister_pinmux(struct pinmux_info *pip)
{
pr_info("%s deregistering\n", pip->name);
pfc_iounmap(pip);
return gpiochip_remove(&pip->chip);
}

26
drivers/sh/pfc/Kconfig Normal file
View file

@ -0,0 +1,26 @@
comment "Pin function controller options"
config SH_PFC
# XXX move off the gpio dependency
depends on GENERIC_GPIO
select GPIO_SH_PFC if ARCH_REQUIRE_GPIOLIB
select PINCTRL_SH_PFC
def_bool y
#
# Placeholder for now, rehome to drivers/pinctrl once the PFC APIs
# have settled.
#
config PINCTRL_SH_PFC
tristate "SuperH PFC pin controller driver"
depends on SH_PFC
select PINCTRL
select PINMUX
select PINCONF
config GPIO_SH_PFC
tristate "SuperH PFC GPIO support"
depends on SH_PFC && GPIOLIB
help
This enables support for GPIOs within the SoC's pin function
controller.

3
drivers/sh/pfc/Makefile Normal file
View file

@ -0,0 +1,3 @@
obj-y += core.o
obj-$(CONFIG_PINCTRL_SH_PFC) += pinctrl.o
obj-$(CONFIG_GPIO_SH_PFC) += gpio.o

572
drivers/sh/pfc/core.c Normal file
View file

@ -0,0 +1,572 @@
/*
* SuperH Pin Function Controller support.
*
* Copyright (C) 2008 Magnus Damm
* Copyright (C) 2009 - 2012 Paul Mundt
*
* 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.
*/
#define pr_fmt(fmt) "sh_pfc " KBUILD_MODNAME ": " fmt
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/sh_pfc.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/bitops.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/pinctrl/machine.h>
static struct sh_pfc *sh_pfc __read_mostly;
static inline bool sh_pfc_initialized(void)
{
return !!sh_pfc;
}
static void pfc_iounmap(struct sh_pfc *pfc)
{
int k;
for (k = 0; k < pfc->num_resources; k++)
if (pfc->window[k].virt)
iounmap(pfc->window[k].virt);
kfree(pfc->window);
pfc->window = NULL;
}
static int pfc_ioremap(struct sh_pfc *pfc)
{
struct resource *res;
int k;
if (!pfc->num_resources)
return 0;
pfc->window = kzalloc(pfc->num_resources * sizeof(*pfc->window),
GFP_NOWAIT);
if (!pfc->window)
goto err1;
for (k = 0; k < pfc->num_resources; k++) {
res = pfc->resource + k;
WARN_ON(resource_type(res) != IORESOURCE_MEM);
pfc->window[k].phys = res->start;
pfc->window[k].size = resource_size(res);
pfc->window[k].virt = ioremap_nocache(res->start,
resource_size(res));
if (!pfc->window[k].virt)
goto err2;
}
return 0;
err2:
pfc_iounmap(pfc);
err1:
return -1;
}
static void __iomem *pfc_phys_to_virt(struct sh_pfc *pfc,
unsigned long address)
{
struct pfc_window *window;
int k;
/* scan through physical windows and convert address */
for (k = 0; k < pfc->num_resources; k++) {
window = pfc->window + k;
if (address < window->phys)
continue;
if (address >= (window->phys + window->size))
continue;
return window->virt + (address - window->phys);
}
/* no windows defined, register must be 1:1 mapped virt:phys */
return (void __iomem *)address;
}
static int enum_in_range(pinmux_enum_t enum_id, struct pinmux_range *r)
{
if (enum_id < r->begin)
return 0;
if (enum_id > r->end)
return 0;
return 1;
}
static unsigned long gpio_read_raw_reg(void __iomem *mapped_reg,
unsigned long reg_width)
{
switch (reg_width) {
case 8:
return ioread8(mapped_reg);
case 16:
return ioread16(mapped_reg);
case 32:
return ioread32(mapped_reg);
}
BUG();
return 0;
}
static void gpio_write_raw_reg(void __iomem *mapped_reg,
unsigned long reg_width,
unsigned long data)
{
switch (reg_width) {
case 8:
iowrite8(data, mapped_reg);
return;
case 16:
iowrite16(data, mapped_reg);
return;
case 32:
iowrite32(data, mapped_reg);
return;
}
BUG();
}
int sh_pfc_read_bit(struct pinmux_data_reg *dr, unsigned long in_pos)
{
unsigned long pos;
pos = dr->reg_width - (in_pos + 1);
pr_debug("read_bit: addr = %lx, pos = %ld, "
"r_width = %ld\n", dr->reg, pos, dr->reg_width);
return (gpio_read_raw_reg(dr->mapped_reg, dr->reg_width) >> pos) & 1;
}
EXPORT_SYMBOL_GPL(sh_pfc_read_bit);
void sh_pfc_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos,
unsigned long value)
{
unsigned long pos;
pos = dr->reg_width - (in_pos + 1);
pr_debug("write_bit addr = %lx, value = %d, pos = %ld, "
"r_width = %ld\n",
dr->reg, !!value, pos, dr->reg_width);
if (value)
set_bit(pos, &dr->reg_shadow);
else
clear_bit(pos, &dr->reg_shadow);
gpio_write_raw_reg(dr->mapped_reg, dr->reg_width, dr->reg_shadow);
}
EXPORT_SYMBOL_GPL(sh_pfc_write_bit);
static void config_reg_helper(struct sh_pfc *pfc,
struct pinmux_cfg_reg *crp,
unsigned long in_pos,
void __iomem **mapped_regp,
unsigned long *maskp,
unsigned long *posp)
{
int k;
*mapped_regp = pfc_phys_to_virt(pfc, crp->reg);
if (crp->field_width) {
*maskp = (1 << crp->field_width) - 1;
*posp = crp->reg_width - ((in_pos + 1) * crp->field_width);
} else {
*maskp = (1 << crp->var_field_width[in_pos]) - 1;
*posp = crp->reg_width;
for (k = 0; k <= in_pos; k++)
*posp -= crp->var_field_width[k];
}
}
static int read_config_reg(struct sh_pfc *pfc,
struct pinmux_cfg_reg *crp,
unsigned long field)
{
void __iomem *mapped_reg;
unsigned long mask, pos;
config_reg_helper(pfc, crp, field, &mapped_reg, &mask, &pos);
pr_debug("read_reg: addr = %lx, field = %ld, "
"r_width = %ld, f_width = %ld\n",
crp->reg, field, crp->reg_width, crp->field_width);
return (gpio_read_raw_reg(mapped_reg, crp->reg_width) >> pos) & mask;
}
static void write_config_reg(struct sh_pfc *pfc,
struct pinmux_cfg_reg *crp,
unsigned long field, unsigned long value)
{
void __iomem *mapped_reg;
unsigned long mask, pos, data;
config_reg_helper(pfc, crp, field, &mapped_reg, &mask, &pos);
pr_debug("write_reg addr = %lx, value = %ld, field = %ld, "
"r_width = %ld, f_width = %ld\n",
crp->reg, value, field, crp->reg_width, crp->field_width);
mask = ~(mask << pos);
value = value << pos;
data = gpio_read_raw_reg(mapped_reg, crp->reg_width);
data &= mask;
data |= value;
if (pfc->unlock_reg)
gpio_write_raw_reg(pfc_phys_to_virt(pfc, pfc->unlock_reg),
32, ~data);
gpio_write_raw_reg(mapped_reg, crp->reg_width, data);
}
static int setup_data_reg(struct sh_pfc *pfc, unsigned gpio)
{
struct pinmux_gpio *gpiop = &pfc->gpios[gpio];
struct pinmux_data_reg *data_reg;
int k, n;
if (!enum_in_range(gpiop->enum_id, &pfc->data))
return -1;
k = 0;
while (1) {
data_reg = pfc->data_regs + k;
if (!data_reg->reg_width)
break;
data_reg->mapped_reg = pfc_phys_to_virt(pfc, data_reg->reg);
for (n = 0; n < data_reg->reg_width; n++) {
if (data_reg->enum_ids[n] == gpiop->enum_id) {
gpiop->flags &= ~PINMUX_FLAG_DREG;
gpiop->flags |= (k << PINMUX_FLAG_DREG_SHIFT);
gpiop->flags &= ~PINMUX_FLAG_DBIT;
gpiop->flags |= (n << PINMUX_FLAG_DBIT_SHIFT);
return 0;
}
}
k++;
}
BUG();
return -1;
}
static void setup_data_regs(struct sh_pfc *pfc)
{
struct pinmux_data_reg *drp;
int k;
for (k = pfc->first_gpio; k <= pfc->last_gpio; k++)
setup_data_reg(pfc, k);
k = 0;
while (1) {
drp = pfc->data_regs + k;
if (!drp->reg_width)
break;
drp->reg_shadow = gpio_read_raw_reg(drp->mapped_reg,
drp->reg_width);
k++;
}
}
int sh_pfc_get_data_reg(struct sh_pfc *pfc, unsigned gpio,
struct pinmux_data_reg **drp, int *bitp)
{
struct pinmux_gpio *gpiop = &pfc->gpios[gpio];
int k, n;
if (!enum_in_range(gpiop->enum_id, &pfc->data))
return -1;
k = (gpiop->flags & PINMUX_FLAG_DREG) >> PINMUX_FLAG_DREG_SHIFT;
n = (gpiop->flags & PINMUX_FLAG_DBIT) >> PINMUX_FLAG_DBIT_SHIFT;
*drp = pfc->data_regs + k;
*bitp = n;
return 0;
}
EXPORT_SYMBOL_GPL(sh_pfc_get_data_reg);
static int get_config_reg(struct sh_pfc *pfc, pinmux_enum_t enum_id,
struct pinmux_cfg_reg **crp,
int *fieldp, int *valuep,
unsigned long **cntp)
{
struct pinmux_cfg_reg *config_reg;
unsigned long r_width, f_width, curr_width, ncomb;
int k, m, n, pos, bit_pos;
k = 0;
while (1) {
config_reg = pfc->cfg_regs + k;
r_width = config_reg->reg_width;
f_width = config_reg->field_width;
if (!r_width)
break;
pos = 0;
m = 0;
for (bit_pos = 0; bit_pos < r_width; bit_pos += curr_width) {
if (f_width)
curr_width = f_width;
else
curr_width = config_reg->var_field_width[m];
ncomb = 1 << curr_width;
for (n = 0; n < ncomb; n++) {
if (config_reg->enum_ids[pos + n] == enum_id) {
*crp = config_reg;
*fieldp = m;
*valuep = n;
*cntp = &config_reg->cnt[m];
return 0;
}
}
pos += ncomb;
m++;
}
k++;
}
return -1;
}
int sh_pfc_gpio_to_enum(struct sh_pfc *pfc, unsigned gpio, int pos,
pinmux_enum_t *enum_idp)
{
pinmux_enum_t enum_id = pfc->gpios[gpio].enum_id;
pinmux_enum_t *data = pfc->gpio_data;
int k;
if (!enum_in_range(enum_id, &pfc->data)) {
if (!enum_in_range(enum_id, &pfc->mark)) {
pr_err("non data/mark enum_id for gpio %d\n", gpio);
return -1;
}
}
if (pos) {
*enum_idp = data[pos + 1];
return pos + 1;
}
for (k = 0; k < pfc->gpio_data_size; k++) {
if (data[k] == enum_id) {
*enum_idp = data[k + 1];
return k + 1;
}
}
pr_err("cannot locate data/mark enum_id for gpio %d\n", gpio);
return -1;
}
EXPORT_SYMBOL_GPL(sh_pfc_gpio_to_enum);
int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type,
int cfg_mode)
{
struct pinmux_cfg_reg *cr = NULL;
pinmux_enum_t enum_id;
struct pinmux_range *range;
int in_range, pos, field, value;
unsigned long *cntp;
switch (pinmux_type) {
case PINMUX_TYPE_FUNCTION:
range = NULL;
break;
case PINMUX_TYPE_OUTPUT:
range = &pfc->output;
break;
case PINMUX_TYPE_INPUT:
range = &pfc->input;
break;
case PINMUX_TYPE_INPUT_PULLUP:
range = &pfc->input_pu;
break;
case PINMUX_TYPE_INPUT_PULLDOWN:
range = &pfc->input_pd;
break;
default:
goto out_err;
}
pos = 0;
enum_id = 0;
field = 0;
value = 0;
while (1) {
pos = sh_pfc_gpio_to_enum(pfc, gpio, pos, &enum_id);
if (pos <= 0)
goto out_err;
if (!enum_id)
break;
/* first check if this is a function enum */
in_range = enum_in_range(enum_id, &pfc->function);
if (!in_range) {
/* not a function enum */
if (range) {
/*
* other range exists, so this pin is
* a regular GPIO pin that now is being
* bound to a specific direction.
*
* for this case we only allow function enums
* and the enums that match the other range.
*/
in_range = enum_in_range(enum_id, range);
/*
* special case pass through for fixed
* input-only or output-only pins without
* function enum register association.
*/
if (in_range && enum_id == range->force)
continue;
} else {
/*
* no other range exists, so this pin
* must then be of the function type.
*
* allow function type pins to select
* any combination of function/in/out
* in their MARK lists.
*/
in_range = 1;
}
}
if (!in_range)
continue;
if (get_config_reg(pfc, enum_id, &cr,
&field, &value, &cntp) != 0)
goto out_err;
switch (cfg_mode) {
case GPIO_CFG_DRYRUN:
if (!*cntp ||
(read_config_reg(pfc, cr, field) != value))
continue;
break;
case GPIO_CFG_REQ:
write_config_reg(pfc, cr, field, value);
*cntp = *cntp + 1;
break;
case GPIO_CFG_FREE:
*cntp = *cntp - 1;
break;
}
}
return 0;
out_err:
return -1;
}
EXPORT_SYMBOL_GPL(sh_pfc_config_gpio);
int register_sh_pfc(struct sh_pfc *pfc)
{
int (*initroutine)(struct sh_pfc *) = NULL;
int ret;
/*
* Ensure that the type encoding fits
*/
BUILD_BUG_ON(PINMUX_FLAG_TYPE > ((1 << PINMUX_FLAG_DBIT_SHIFT) - 1));
if (sh_pfc)
return -EBUSY;
ret = pfc_ioremap(pfc);
if (unlikely(ret < 0))
return ret;
spin_lock_init(&pfc->lock);
pinctrl_provide_dummies();
setup_data_regs(pfc);
sh_pfc = pfc;
/*
* Initialize pinctrl bindings first
*/
initroutine = symbol_request(sh_pfc_register_pinctrl);
if (initroutine) {
ret = (*initroutine)(pfc);
symbol_put_addr(initroutine);
if (unlikely(ret != 0))
goto err;
} else {
pr_err("failed to initialize pinctrl bindings\n");
goto err;
}
/*
* Then the GPIO chip
*/
initroutine = symbol_request(sh_pfc_register_gpiochip);
if (initroutine) {
ret = (*initroutine)(pfc);
symbol_put_addr(initroutine);
/*
* If the GPIO chip fails to come up we still leave the
* PFC state as it is, given that there are already
* extant users of it that have succeeded by this point.
*/
if (unlikely(ret != 0)) {
pr_notice("failed to init GPIO chip, ignoring...\n");
ret = 0;
}
}
pr_info("%s support registered\n", pfc->name);
return 0;
err:
pfc_iounmap(pfc);
sh_pfc = NULL;
return ret;
}

239
drivers/sh/pfc/gpio.c Normal file
View file

@ -0,0 +1,239 @@
/*
* SuperH Pin Function Controller GPIO driver.
*
* Copyright (C) 2008 Magnus Damm
* Copyright (C) 2009 - 2012 Paul Mundt
*
* 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.
*/
#define pr_fmt(fmt) "sh_pfc " KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/consumer.h>
struct sh_pfc_chip {
struct sh_pfc *pfc;
struct gpio_chip gpio_chip;
};
static struct sh_pfc_chip *gpio_to_pfc_chip(struct gpio_chip *gc)
{
return container_of(gc, struct sh_pfc_chip, gpio_chip);
}
static struct sh_pfc *gpio_to_pfc(struct gpio_chip *gc)
{
return gpio_to_pfc_chip(gc)->pfc;
}
static int sh_gpio_request(struct gpio_chip *gc, unsigned offset)
{
return pinctrl_request_gpio(offset);
}
static void sh_gpio_free(struct gpio_chip *gc, unsigned offset)
{
pinctrl_free_gpio(offset);
}
static void sh_gpio_set_value(struct sh_pfc *pfc, unsigned gpio, int value)
{
struct pinmux_data_reg *dr = NULL;
int bit = 0;
if (!pfc || sh_pfc_get_data_reg(pfc, gpio, &dr, &bit) != 0)
BUG();
else
sh_pfc_write_bit(dr, bit, value);
}
static int sh_gpio_get_value(struct sh_pfc *pfc, unsigned gpio)
{
struct pinmux_data_reg *dr = NULL;
int bit = 0;
if (!pfc || sh_pfc_get_data_reg(pfc, gpio, &dr, &bit) != 0)
return -EINVAL;
return sh_pfc_read_bit(dr, bit);
}
static int sh_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
{
return pinctrl_gpio_direction_input(offset);
}
static int sh_gpio_direction_output(struct gpio_chip *gc, unsigned offset,
int value)
{
sh_gpio_set_value(gpio_to_pfc(gc), offset, value);
return pinctrl_gpio_direction_output(offset);
}
static int sh_gpio_get(struct gpio_chip *gc, unsigned offset)
{
return sh_gpio_get_value(gpio_to_pfc(gc), offset);
}
static void sh_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
{
sh_gpio_set_value(gpio_to_pfc(gc), offset, value);
}
static int sh_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
{
struct sh_pfc *pfc = gpio_to_pfc(gc);
pinmux_enum_t enum_id;
pinmux_enum_t *enum_ids;
int i, k, pos;
pos = 0;
enum_id = 0;
while (1) {
pos = sh_pfc_gpio_to_enum(pfc, offset, pos, &enum_id);
if (pos <= 0 || !enum_id)
break;
for (i = 0; i < pfc->gpio_irq_size; i++) {
enum_ids = pfc->gpio_irq[i].enum_ids;
for (k = 0; enum_ids[k]; k++) {
if (enum_ids[k] == enum_id)
return pfc->gpio_irq[i].irq;
}
}
}
return -ENOSYS;
}
static void sh_pfc_gpio_setup(struct sh_pfc_chip *chip)
{
struct sh_pfc *pfc = chip->pfc;
struct gpio_chip *gc = &chip->gpio_chip;
gc->request = sh_gpio_request;
gc->free = sh_gpio_free;
gc->direction_input = sh_gpio_direction_input;
gc->get = sh_gpio_get;
gc->direction_output = sh_gpio_direction_output;
gc->set = sh_gpio_set;
gc->to_irq = sh_gpio_to_irq;
WARN_ON(pfc->first_gpio != 0); /* needs testing */
gc->label = pfc->name;
gc->owner = THIS_MODULE;
gc->base = pfc->first_gpio;
gc->ngpio = (pfc->last_gpio - pfc->first_gpio) + 1;
}
int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
{
struct sh_pfc_chip *chip;
int ret;
chip = kzalloc(sizeof(struct sh_pfc_chip), GFP_KERNEL);
if (unlikely(!chip))
return -ENOMEM;
chip->pfc = pfc;
sh_pfc_gpio_setup(chip);
ret = gpiochip_add(&chip->gpio_chip);
if (unlikely(ret < 0))
kfree(chip);
pr_info("%s handling gpio %d -> %d\n",
pfc->name, pfc->first_gpio, pfc->last_gpio);
return ret;
}
EXPORT_SYMBOL_GPL(sh_pfc_register_gpiochip);
static int sh_pfc_gpio_match(struct gpio_chip *gc, void *data)
{
return !!strstr(gc->label, data);
}
static int __devinit sh_pfc_gpio_probe(struct platform_device *pdev)
{
struct sh_pfc_chip *chip;
struct gpio_chip *gc;
gc = gpiochip_find("_pfc", sh_pfc_gpio_match);
if (unlikely(!gc)) {
pr_err("Cant find gpio chip\n");
return -ENODEV;
}
chip = gpio_to_pfc_chip(gc);
platform_set_drvdata(pdev, chip);
pr_info("attaching to GPIO chip %s\n", chip->pfc->name);
return 0;
}
static int __devexit sh_pfc_gpio_remove(struct platform_device *pdev)
{
struct sh_pfc_chip *chip = platform_get_drvdata(pdev);
int ret;
ret = gpiochip_remove(&chip->gpio_chip);
if (unlikely(ret < 0))
return ret;
kfree(chip);
return 0;
}
static struct platform_driver sh_pfc_gpio_driver = {
.probe = sh_pfc_gpio_probe,
.remove = __devexit_p(sh_pfc_gpio_remove),
.driver = {
.name = KBUILD_MODNAME,
.owner = THIS_MODULE,
},
};
static struct platform_device sh_pfc_gpio_device = {
.name = KBUILD_MODNAME,
.id = -1,
};
static int __init sh_pfc_gpio_init(void)
{
int rc;
rc = platform_driver_register(&sh_pfc_gpio_driver);
if (likely(!rc)) {
rc = platform_device_register(&sh_pfc_gpio_device);
if (unlikely(rc))
platform_driver_unregister(&sh_pfc_gpio_driver);
}
return rc;
}
static void __exit sh_pfc_gpio_exit(void)
{
platform_device_unregister(&sh_pfc_gpio_device);
platform_driver_unregister(&sh_pfc_gpio_driver);
}
module_init(sh_pfc_gpio_init);
module_exit(sh_pfc_gpio_exit);
MODULE_AUTHOR("Magnus Damm, Paul Mundt");
MODULE_DESCRIPTION("GPIO driver for SuperH pin function controller");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:pfc-gpio");

530
drivers/sh/pfc/pinctrl.c Normal file
View file

@ -0,0 +1,530 @@
/*
* SuperH Pin Function Controller pinmux support.
*
* Copyright (C) 2012 Paul Mundt
*
* 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.
*/
#define DRV_NAME "pinctrl-sh_pfc"
#define pr_fmt(fmt) DRV_NAME " " KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/module.h>
#include <linux/sh_pfc.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/pinconf-generic.h>
struct sh_pfc_pinctrl {
struct pinctrl_dev *pctl;
struct sh_pfc *pfc;
struct pinmux_gpio **functions;
unsigned int nr_functions;
struct pinctrl_pin_desc *pads;
unsigned int nr_pads;
spinlock_t lock;
};
static struct sh_pfc_pinctrl *sh_pfc_pmx;
static int sh_pfc_get_groups_count(struct pinctrl_dev *pctldev)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
return pmx->nr_pads;
}
static const char *sh_pfc_get_group_name(struct pinctrl_dev *pctldev,
unsigned selector)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
return pmx->pads[selector].name;
}
static int sh_pfc_get_group_pins(struct pinctrl_dev *pctldev, unsigned group,
const unsigned **pins, unsigned *num_pins)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
*pins = &pmx->pads[group].number;
*num_pins = 1;
return 0;
}
static void sh_pfc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
unsigned offset)
{
seq_printf(s, "%s", DRV_NAME);
}
static struct pinctrl_ops sh_pfc_pinctrl_ops = {
.get_groups_count = sh_pfc_get_groups_count,
.get_group_name = sh_pfc_get_group_name,
.get_group_pins = sh_pfc_get_group_pins,
.pin_dbg_show = sh_pfc_pin_dbg_show,
};
static int sh_pfc_get_functions_count(struct pinctrl_dev *pctldev)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
return pmx->nr_functions;
}
static const char *sh_pfc_get_function_name(struct pinctrl_dev *pctldev,
unsigned selector)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
return pmx->functions[selector]->name;
}
static int sh_pfc_get_function_groups(struct pinctrl_dev *pctldev, unsigned func,
const char * const **groups,
unsigned * const num_groups)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
*groups = &pmx->functions[func]->name;
*num_groups = 1;
return 0;
}
static int sh_pfc_noop_enable(struct pinctrl_dev *pctldev, unsigned func,
unsigned group)
{
return 0;
}
static void sh_pfc_noop_disable(struct pinctrl_dev *pctldev, unsigned func,
unsigned group)
{
}
static inline int sh_pfc_config_function(struct sh_pfc *pfc, unsigned offset)
{
if (sh_pfc_config_gpio(pfc, offset,
PINMUX_TYPE_FUNCTION,
GPIO_CFG_DRYRUN) != 0)
return -EINVAL;
if (sh_pfc_config_gpio(pfc, offset,
PINMUX_TYPE_FUNCTION,
GPIO_CFG_REQ) != 0)
return -EINVAL;
return 0;
}
static int sh_pfc_reconfig_pin(struct sh_pfc *pfc, unsigned offset,
int new_type)
{
unsigned long flags;
int pinmux_type;
int ret = -EINVAL;
spin_lock_irqsave(&pfc->lock, flags);
pinmux_type = pfc->gpios[offset].flags & PINMUX_FLAG_TYPE;
/*
* See if the present config needs to first be de-configured.
*/
switch (pinmux_type) {
case PINMUX_TYPE_GPIO:
break;
case PINMUX_TYPE_OUTPUT:
case PINMUX_TYPE_INPUT:
case PINMUX_TYPE_INPUT_PULLUP:
case PINMUX_TYPE_INPUT_PULLDOWN:
sh_pfc_config_gpio(pfc, offset, pinmux_type, GPIO_CFG_FREE);
break;
default:
goto err;
}
/*
* Dry run
*/
if (sh_pfc_config_gpio(pfc, offset, new_type,
GPIO_CFG_DRYRUN) != 0)
goto err;
/*
* Request
*/
if (sh_pfc_config_gpio(pfc, offset, new_type,
GPIO_CFG_REQ) != 0)
goto err;
pfc->gpios[offset].flags &= ~PINMUX_FLAG_TYPE;
pfc->gpios[offset].flags |= new_type;
ret = 0;
err:
spin_unlock_irqrestore(&pfc->lock, flags);
return ret;
}
static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned offset)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
unsigned long flags;
int ret, pinmux_type;
spin_lock_irqsave(&pfc->lock, flags);
pinmux_type = pfc->gpios[offset].flags & PINMUX_FLAG_TYPE;
switch (pinmux_type) {
case PINMUX_TYPE_FUNCTION:
pr_notice_once("Use of GPIO API for function requests is "
"deprecated, convert to pinctrl\n");
/* handle for now */
ret = sh_pfc_config_function(pfc, offset);
if (unlikely(ret < 0))
goto err;
break;
case PINMUX_TYPE_GPIO:
break;
default:
pr_err("Unsupported mux type (%d), bailing...\n", pinmux_type);
return -ENOTSUPP;
}
ret = 0;
err:
spin_unlock_irqrestore(&pfc->lock, flags);
return ret;
}
static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned offset)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
unsigned long flags;
int pinmux_type;
spin_lock_irqsave(&pfc->lock, flags);
pinmux_type = pfc->gpios[offset].flags & PINMUX_FLAG_TYPE;
sh_pfc_config_gpio(pfc, offset, pinmux_type, GPIO_CFG_FREE);
spin_unlock_irqrestore(&pfc->lock, flags);
}
static int sh_pfc_gpio_set_direction(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned offset, bool input)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
int type = input ? PINMUX_TYPE_INPUT : PINMUX_TYPE_OUTPUT;
return sh_pfc_reconfig_pin(pmx->pfc, offset, type);
}
static struct pinmux_ops sh_pfc_pinmux_ops = {
.get_functions_count = sh_pfc_get_functions_count,
.get_function_name = sh_pfc_get_function_name,
.get_function_groups = sh_pfc_get_function_groups,
.enable = sh_pfc_noop_enable,
.disable = sh_pfc_noop_disable,
.gpio_request_enable = sh_pfc_gpio_request_enable,
.gpio_disable_free = sh_pfc_gpio_disable_free,
.gpio_set_direction = sh_pfc_gpio_set_direction,
};
static int sh_pfc_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin,
unsigned long *config)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
*config = pfc->gpios[pin].flags & PINMUX_FLAG_TYPE;
return 0;
}
static int sh_pfc_pinconf_set(struct pinctrl_dev *pctldev, unsigned pin,
unsigned long config)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
/* Validate the new type */
if (config >= PINMUX_FLAG_TYPE)
return -EINVAL;
return sh_pfc_reconfig_pin(pmx->pfc, pin, config);
}
static void sh_pfc_pinconf_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s, unsigned pin)
{
const char *pinmux_type_str[] = {
[PINMUX_TYPE_NONE] = "none",
[PINMUX_TYPE_FUNCTION] = "function",
[PINMUX_TYPE_GPIO] = "gpio",
[PINMUX_TYPE_OUTPUT] = "output",
[PINMUX_TYPE_INPUT] = "input",
[PINMUX_TYPE_INPUT_PULLUP] = "input bias pull up",
[PINMUX_TYPE_INPUT_PULLDOWN] = "input bias pull down",
};
unsigned long config;
int rc;
rc = sh_pfc_pinconf_get(pctldev, pin, &config);
if (unlikely(rc != 0))
return;
seq_printf(s, " %s", pinmux_type_str[config]);
}
static struct pinconf_ops sh_pfc_pinconf_ops = {
.pin_config_get = sh_pfc_pinconf_get,
.pin_config_set = sh_pfc_pinconf_set,
.pin_config_dbg_show = sh_pfc_pinconf_dbg_show,
};
static struct pinctrl_gpio_range sh_pfc_gpio_range = {
.name = DRV_NAME,
.id = 0,
};
static struct pinctrl_desc sh_pfc_pinctrl_desc = {
.name = DRV_NAME,
.owner = THIS_MODULE,
.pctlops = &sh_pfc_pinctrl_ops,
.pmxops = &sh_pfc_pinmux_ops,
.confops = &sh_pfc_pinconf_ops,
};
int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
{
sh_pfc_pmx = kzalloc(sizeof(struct sh_pfc_pinctrl), GFP_KERNEL);
if (unlikely(!sh_pfc_pmx))
return -ENOMEM;
spin_lock_init(&sh_pfc_pmx->lock);
sh_pfc_pmx->pfc = pfc;
return 0;
}
EXPORT_SYMBOL_GPL(sh_pfc_register_pinctrl);
static inline void __devinit sh_pfc_map_one_gpio(struct sh_pfc *pfc,
struct sh_pfc_pinctrl *pmx,
struct pinmux_gpio *gpio,
unsigned offset)
{
struct pinmux_data_reg *dummy;
unsigned long flags;
int bit;
gpio->flags &= ~PINMUX_FLAG_TYPE;
if (sh_pfc_get_data_reg(pfc, offset, &dummy, &bit) == 0)
gpio->flags |= PINMUX_TYPE_GPIO;
else {
gpio->flags |= PINMUX_TYPE_FUNCTION;
spin_lock_irqsave(&pmx->lock, flags);
pmx->nr_functions++;
spin_unlock_irqrestore(&pmx->lock, flags);
}
}
/* pinmux ranges -> pinctrl pin descs */
static int __devinit sh_pfc_map_gpios(struct sh_pfc *pfc,
struct sh_pfc_pinctrl *pmx)
{
unsigned long flags;
int i;
pmx->nr_pads = pfc->last_gpio - pfc->first_gpio + 1;
pmx->pads = kmalloc(sizeof(struct pinctrl_pin_desc) * pmx->nr_pads,
GFP_KERNEL);
if (unlikely(!pmx->pads)) {
pmx->nr_pads = 0;
return -ENOMEM;
}
spin_lock_irqsave(&pfc->lock, flags);
/*
* We don't necessarily have a 1:1 mapping between pin and linux
* GPIO number, as the latter maps to the associated enum_id.
* Care needs to be taken to translate back to pin space when
* dealing with any pin configurations.
*/
for (i = 0; i < pmx->nr_pads; i++) {
struct pinctrl_pin_desc *pin = pmx->pads + i;
struct pinmux_gpio *gpio = pfc->gpios + i;
pin->number = pfc->first_gpio + i;
pin->name = gpio->name;
/* XXX */
if (unlikely(!gpio->enum_id))
continue;
sh_pfc_map_one_gpio(pfc, pmx, gpio, i);
}
spin_unlock_irqrestore(&pfc->lock, flags);
sh_pfc_pinctrl_desc.pins = pmx->pads;
sh_pfc_pinctrl_desc.npins = pmx->nr_pads;
return 0;
}
static int __devinit sh_pfc_map_functions(struct sh_pfc *pfc,
struct sh_pfc_pinctrl *pmx)
{
unsigned long flags;
int i, fn;
pmx->functions = kzalloc(pmx->nr_functions * sizeof(void *),
GFP_KERNEL);
if (unlikely(!pmx->functions))
return -ENOMEM;
spin_lock_irqsave(&pmx->lock, flags);
for (i = fn = 0; i < pmx->nr_pads; i++) {
struct pinmux_gpio *gpio = pfc->gpios + i;
if ((gpio->flags & PINMUX_FLAG_TYPE) == PINMUX_TYPE_FUNCTION)
pmx->functions[fn++] = gpio;
}
spin_unlock_irqrestore(&pmx->lock, flags);
return 0;
}
static int __devinit sh_pfc_pinctrl_probe(struct platform_device *pdev)
{
struct sh_pfc *pfc;
int ret;
if (unlikely(!sh_pfc_pmx))
return -ENODEV;
pfc = sh_pfc_pmx->pfc;
ret = sh_pfc_map_gpios(pfc, sh_pfc_pmx);
if (unlikely(ret != 0))
return ret;
ret = sh_pfc_map_functions(pfc, sh_pfc_pmx);
if (unlikely(ret != 0))
goto free_pads;
sh_pfc_pmx->pctl = pinctrl_register(&sh_pfc_pinctrl_desc, &pdev->dev,
sh_pfc_pmx);
if (IS_ERR(sh_pfc_pmx->pctl)) {
ret = PTR_ERR(sh_pfc_pmx->pctl);
goto free_functions;
}
sh_pfc_gpio_range.npins = pfc->last_gpio - pfc->first_gpio + 1;
sh_pfc_gpio_range.base = pfc->first_gpio;
sh_pfc_gpio_range.pin_base = pfc->first_gpio;
pinctrl_add_gpio_range(sh_pfc_pmx->pctl, &sh_pfc_gpio_range);
platform_set_drvdata(pdev, sh_pfc_pmx);
return 0;
free_functions:
kfree(sh_pfc_pmx->functions);
free_pads:
kfree(sh_pfc_pmx->pads);
kfree(sh_pfc_pmx);
return ret;
}
static int __devexit sh_pfc_pinctrl_remove(struct platform_device *pdev)
{
struct sh_pfc_pinctrl *pmx = platform_get_drvdata(pdev);
pinctrl_remove_gpio_range(pmx->pctl, &sh_pfc_gpio_range);
pinctrl_unregister(pmx->pctl);
platform_set_drvdata(pdev, NULL);
kfree(sh_pfc_pmx->functions);
kfree(sh_pfc_pmx->pads);
kfree(sh_pfc_pmx);
return 0;
}
static struct platform_driver sh_pfc_pinctrl_driver = {
.probe = sh_pfc_pinctrl_probe,
.remove = __devexit_p(sh_pfc_pinctrl_remove),
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
};
static struct platform_device sh_pfc_pinctrl_device = {
.name = DRV_NAME,
.id = -1,
};
static int __init sh_pfc_pinctrl_init(void)
{
int rc;
rc = platform_driver_register(&sh_pfc_pinctrl_driver);
if (likely(!rc)) {
rc = platform_device_register(&sh_pfc_pinctrl_device);
if (unlikely(rc))
platform_driver_unregister(&sh_pfc_pinctrl_driver);
}
return rc;
}
static void __exit sh_pfc_pinctrl_exit(void)
{
platform_driver_unregister(&sh_pfc_pinctrl_driver);
}
subsys_initcall(sh_pfc_pinctrl_init);
module_exit(sh_pfc_pinctrl_exit);

21
include/linux/sh_clk.h
View file

@ -18,7 +18,6 @@ struct clk_mapping {
struct kref ref;
};
struct sh_clk_ops {
#ifdef CONFIG_SH_CLK_CPG_LEGACY
void (*init)(struct clk *clk);
@ -31,6 +30,10 @@ struct sh_clk_ops {
long (*round_rate)(struct clk *clk, unsigned long rate);
};
#define SH_CLK_DIV_MSK(div) ((1 << (div)) - 1)
#define SH_CLK_DIV4_MSK SH_CLK_DIV_MSK(4)
#define SH_CLK_DIV6_MSK SH_CLK_DIV_MSK(6)
struct clk {
struct list_head node;
struct clk *parent;
@ -52,6 +55,7 @@ struct clk {
unsigned int enable_bit;
void __iomem *mapped_reg;
unsigned int div_mask;
unsigned long arch_flags;
void *priv;
struct clk_mapping *mapping;
@ -65,6 +69,8 @@ struct clk {
#define CLK_ENABLE_REG_16BIT BIT(2)
#define CLK_ENABLE_REG_8BIT BIT(3)
#define CLK_MASK_DIV_ON_DISABLE BIT(4)
#define CLK_ENABLE_REG_MASK (CLK_ENABLE_REG_32BIT | \
CLK_ENABLE_REG_16BIT | \
CLK_ENABLE_REG_8BIT)
@ -146,14 +152,17 @@ static inline int __deprecated sh_clk_mstp32_register(struct clk *clks, int nr)
.enable_reg = (void __iomem *)_reg, \
.enable_bit = _shift, \
.arch_flags = _div_bitmap, \
.div_mask = SH_CLK_DIV4_MSK, \
.flags = _flags, \
}
struct clk_div4_table {
struct clk_div_table {
struct clk_div_mult_table *div_mult_table;
void (*kick)(struct clk *clk);
};
#define clk_div4_table clk_div_table
int sh_clk_div4_register(struct clk *clks, int nr,
struct clk_div4_table *table);
int sh_clk_div4_enable_register(struct clk *clks, int nr,
@ -165,7 +174,9 @@ int sh_clk_div4_reparent_register(struct clk *clks, int nr,
_num_parents, _src_shift, _src_width) \
{ \
.enable_reg = (void __iomem *)_reg, \
.flags = _flags, \
.enable_bit = 0, /* unused */ \
.flags = _flags | CLK_MASK_DIV_ON_DISABLE, \
.div_mask = SH_CLK_DIV6_MSK, \
.parent_table = _parents, \
.parent_num = _num_parents, \
.src_shift = _src_shift, \
@ -176,7 +187,9 @@ int sh_clk_div4_reparent_register(struct clk *clks, int nr,
{ \
.parent = _parent, \
.enable_reg = (void __iomem *)_reg, \
.flags = _flags, \
.enable_bit = 0, /* unused */ \
.div_mask = SH_CLK_DIV6_MSK, \
.flags = _flags | CLK_MASK_DIV_ON_DISABLE, \
}
int sh_clk_div6_register(struct clk *clks, int nr);

65
include/linux/sh_pfc.h
View file

@ -11,22 +11,24 @@
#ifndef __SH_PFC_H
#define __SH_PFC_H
#include <linux/stringify.h>
#include <asm-generic/gpio.h>
typedef unsigned short pinmux_enum_t;
typedef unsigned short pinmux_flag_t;
#define PINMUX_TYPE_NONE 0
#define PINMUX_TYPE_FUNCTION 1
#define PINMUX_TYPE_GPIO 2
#define PINMUX_TYPE_OUTPUT 3
#define PINMUX_TYPE_INPUT 4
#define PINMUX_TYPE_INPUT_PULLUP 5
#define PINMUX_TYPE_INPUT_PULLDOWN 6
enum {
PINMUX_TYPE_NONE,
#define PINMUX_FLAG_TYPE (0x7)
#define PINMUX_FLAG_WANT_PULLUP (1 << 3)
#define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
PINMUX_TYPE_FUNCTION,
PINMUX_TYPE_GPIO,
PINMUX_TYPE_OUTPUT,
PINMUX_TYPE_INPUT,
PINMUX_TYPE_INPUT_PULLUP,
PINMUX_TYPE_INPUT_PULLDOWN,
PINMUX_FLAG_TYPE, /* must be last */
};
#define PINMUX_FLAG_DBIT_SHIFT 5
#define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT)
@ -36,9 +38,12 @@ typedef unsigned short pinmux_flag_t;
struct pinmux_gpio {
pinmux_enum_t enum_id;
pinmux_flag_t flags;
const char *name;
};
#define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
#define PINMUX_GPIO(gpio, data_or_mark) \
[gpio] = { .name = __stringify(gpio), .enum_id = data_or_mark, .flags = PINMUX_TYPE_NONE }
#define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
struct pinmux_cfg_reg {
@ -89,7 +94,7 @@ struct pfc_window {
unsigned long size;
};
struct pinmux_info {
struct sh_pfc {
char *name;
pinmux_enum_t reserved_id;
struct pinmux_range data;
@ -112,17 +117,45 @@ struct pinmux_info {
struct pinmux_irq *gpio_irq;
unsigned int gpio_irq_size;
spinlock_t lock;
struct resource *resource;
unsigned int num_resources;
struct pfc_window *window;
unsigned long unlock_reg;
struct gpio_chip chip;
};
int register_pinmux(struct pinmux_info *pip);
int unregister_pinmux(struct pinmux_info *pip);
/* XXX compat for now */
#define pinmux_info sh_pfc
/* drivers/sh/pfc/gpio.c */
int sh_pfc_register_gpiochip(struct sh_pfc *pfc);
/* drivers/sh/pfc/pinctrl.c */
int sh_pfc_register_pinctrl(struct sh_pfc *pfc);
/* drivers/sh/pfc/core.c */
int register_sh_pfc(struct sh_pfc *pfc);
int sh_pfc_read_bit(struct pinmux_data_reg *dr, unsigned long in_pos);
void sh_pfc_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos,
unsigned long value);
int sh_pfc_get_data_reg(struct sh_pfc *pfc, unsigned gpio,
struct pinmux_data_reg **drp, int *bitp);
int sh_pfc_gpio_to_enum(struct sh_pfc *pfc, unsigned gpio, int pos,
pinmux_enum_t *enum_idp);
int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type,
int cfg_mode);
/* xxx */
static inline int register_pinmux(struct pinmux_info *pip)
{
struct sh_pfc *pfc = pip;
return register_sh_pfc(pfc);
}
enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE };
/* helper macro for port */
#define PORT_1(fn, pfx, sfx) fn(pfx, sfx)