aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/Kconfig3
-rw-r--r--arch/arm/configs/netx_defconfig6
-rw-r--r--arch/arm/configs/picotux200_defconfig6
-rw-r--r--arch/arm/kernel/ftrace.c2
-rw-r--r--arch/arm/mach-at91/at91rm9200_time.c9
-rw-r--r--arch/arm/mach-netx/include/mach/netx-regs.h22
-rw-r--r--arch/arm/mach-netx/time.c98
-rw-r--r--arch/arm/mach-netx/xc.c6
8 files changed, 127 insertions, 25 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f1a3b10cfa9..4f870207f49 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -156,7 +156,6 @@ config ARCH_MTD_XIP
bool
config GENERIC_HARDIRQS_NO__DO_IRQ
- bool
def_bool y
if OPROFILE
@@ -288,6 +287,8 @@ config ARCH_NETX
bool "Hilscher NetX based"
select CPU_ARM926T
select ARM_VIC
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_TIME
help
This enables support for systems based on the Hilscher NetX Soc
diff --git a/arch/arm/configs/netx_defconfig b/arch/arm/configs/netx_defconfig
index 0884f2370c3..61d0fc5b241 100644
--- a/arch/arm/configs/netx_defconfig
+++ b/arch/arm/configs/netx_defconfig
@@ -728,9 +728,9 @@ CONFIG_RTC_CLASS=m
#
# RTC interfaces
#
-CONFIG_RTC_INTF_SYSFS=m
-CONFIG_RTC_INTF_PROC=m
-CONFIG_RTC_INTF_DEV=m
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
#
# RTC drivers
diff --git a/arch/arm/configs/picotux200_defconfig b/arch/arm/configs/picotux200_defconfig
index 14826f0dabd..59e4463c2da 100644
--- a/arch/arm/configs/picotux200_defconfig
+++ b/arch/arm/configs/picotux200_defconfig
@@ -1069,9 +1069,9 @@ CONFIG_RTC_CLASS=m
#
# RTC interfaces
#
-CONFIG_RTC_INTF_SYSFS=m
-CONFIG_RTC_INTF_PROC=m
-CONFIG_RTC_INTF_DEV=m
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
#
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index 6c90479e897..c6384276622 100644
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -95,7 +95,7 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
-/* run from kstop_machine */
+/* run from ftrace_init with irqs disabled */
int __init ftrace_dyn_arch_init(void *data)
{
ftrace_mcount_set(data);
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c
index a72e798a2a4..d140eae53de 100644
--- a/arch/arm/mach-at91/at91rm9200_time.c
+++ b/arch/arm/mach-at91/at91rm9200_time.c
@@ -141,6 +141,15 @@ clkevt32k_next_event(unsigned long delta, struct clock_event_device *dev)
/* Use "raw" primitives so we behave correctly on RT kernels. */
raw_local_irq_save(flags);
+ /*
+ * According to Thomas Gleixner irqs are already disabled here. Simply
+ * removing raw_local_irq_save above (and the matching
+ * raw_local_irq_restore) was not accepted. See
+ * http://thread.gmane.org/gmane.linux.ports.arm.kernel/41174
+ * So for now (2008-11-20) just warn once if irqs were not disabled ...
+ */
+ WARN_ON_ONCE(!raw_irqs_disabled_flags(flags));
+
/* The alarm IRQ uses absolute time (now+delta), not the relative
* time (delta) in our calling convention. Like all clockevents
* using such "match" hardware, we have a race to defend against.
diff --git a/arch/arm/mach-netx/include/mach/netx-regs.h b/arch/arm/mach-netx/include/mach/netx-regs.h
index 5104a00d40f..08c60ff227b 100644
--- a/arch/arm/mach-netx/include/mach/netx-regs.h
+++ b/arch/arm/mach-netx/include/mach/netx-regs.h
@@ -328,6 +328,28 @@
#define NETX_PFIFO_FILL_LEVEL(pfifo) NETX_PFIFO_REG(0x180 + ((pfifo)<<2))
#define NETX_PFIFO_XPEC_ISR(xpec) NETX_PFIFO_REG(0x400 + ((xpec) << 2))
+
+/*******************************
+ * Memory Controller *
+ *******************************/
+
+/* Registers */
+#define NETX_MEMCR_REG(ofs) __io(NETX_VA_MEMCR + (ofs))
+#define NETX_MEMCR_SRAM_CTRL(cs) NETX_MEMCR_REG(0x0 + 4 * (cs)) /* SRAM for CS 0..2 */
+#define NETX_MEMCR_SDRAM_CFG_CTRL NETX_MEMCR_REG(0x40)
+#define NETX_MEMCR_SDRAM_TIMING_CTRL NETX_MEMCR_REG(0x44)
+#define NETX_MEMCR_SDRAM_MODE NETX_MEMCR_REG(0x48)
+#define NETX_MEMCR_SDRAM_EXT_MODE NETX_MEMCR_REG(0x4c)
+#define NETX_MEMCR_PRIO_TIMESLOT_CTRL NETX_MEMCR_REG(0x80)
+#define NETX_MEMCR_PRIO_ACCESS_CTRL NETX_MEMCR_REG(0x84)
+
+/* Bits */
+#define NETX_MEMCR_SRAM_CTRL_WIDTHEXTMEM(x) (((x) & 0x3) << 24)
+#define NETX_MEMCR_SRAM_CTRL_WSPOSTPAUSEEXTMEM(x) (((x) & 0x3) << 16)
+#define NETX_MEMCR_SRAM_CTRL_WSPREPASEEXTMEM(x) (((x) & 0x3) << 8)
+#define NETX_MEMCR_SRAM_CTRL_WSEXTMEM(x) (((x) & 0x1f) << 0)
+
+
/*******************************
* Dual Port Memory *
*******************************/
diff --git a/arch/arm/mach-netx/time.c b/arch/arm/mach-netx/time.c
index 7c540c1f01f..d51d627ce7c 100644
--- a/arch/arm/mach-netx/time.c
+++ b/arch/arm/mach-netx/time.c
@@ -21,43 +21,100 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/clocksource.h>
+#include <linux/clockchips.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/mach/time.h>
#include <mach/netx-regs.h>
+#define TIMER_CLOCKEVENT 0
+#define TIMER_CLOCKSOURCE 1
+
+static void netx_set_mode(enum clock_event_mode mode,
+ struct clock_event_device *clk)
+{
+ u32 tmode;
+
+ /* disable timer */
+ writel(0, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKEVENT));
+
+ switch (mode) {
+ case CLOCK_EVT_MODE_PERIODIC:
+ writel(LATCH, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKEVENT));
+ tmode = NETX_GPIO_COUNTER_CTRL_RST_EN |
+ NETX_GPIO_COUNTER_CTRL_IRQ_EN |
+ NETX_GPIO_COUNTER_CTRL_RUN;
+ break;
+
+ case CLOCK_EVT_MODE_ONESHOT:
+ writel(0, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKEVENT));
+ tmode = NETX_GPIO_COUNTER_CTRL_IRQ_EN |
+ NETX_GPIO_COUNTER_CTRL_RUN;
+ break;
+
+ default:
+ WARN(1, "%s: unhandled mode %d\n", __func__, mode);
+ /* fall through */
+
+ case CLOCK_EVT_MODE_SHUTDOWN:
+ case CLOCK_EVT_MODE_UNUSED:
+ case CLOCK_EVT_MODE_RESUME:
+ tmode = 0;
+ break;
+ }
+
+ writel(tmode, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKEVENT));
+}
+
+static int netx_set_next_event(unsigned long evt,
+ struct clock_event_device *clk)
+{
+ writel(0 - evt, NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKEVENT));
+ return 0;
+}
+
+static struct clock_event_device netx_clockevent = {
+ .name = "netx-timer" __stringify(TIMER_CLOCKEVENT),
+ .shift = 32,
+ .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+ .set_next_event = netx_set_next_event,
+ .set_mode = netx_set_mode,
+};
+
/*
* IRQ handler for the timer
*/
static irqreturn_t
netx_timer_interrupt(int irq, void *dev_id)
{
- timer_tick();
+ struct clock_event_device *evt = &netx_clockevent;
/* acknowledge interrupt */
writel(COUNTER_BIT(0), NETX_GPIO_IRQ);
+ evt->event_handler(evt);
+
return IRQ_HANDLED;
}
static struct irqaction netx_timer_irq = {
- .name = "NetX Timer Tick",
- .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
- .handler = netx_timer_interrupt,
+ .name = "NetX Timer Tick",
+ .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+ .handler = netx_timer_interrupt,
};
cycle_t netx_get_cycles(void)
{
- return readl(NETX_GPIO_COUNTER_CURRENT(1));
+ return readl(NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKSOURCE));
}
static struct clocksource clocksource_netx = {
- .name = "netx_timer",
+ .name = "netx_timer",
.rating = 200,
.read = netx_get_cycles,
.mask = CLOCKSOURCE_MASK(32),
- .shift = 20,
+ .shift = 20,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
@@ -77,24 +134,37 @@ static void __init netx_timer_init(void)
/* acknowledge interrupt */
writel(COUNTER_BIT(0), NETX_GPIO_IRQ);
- /* Enable the interrupt in the specific timer register and start timer */
+ /* Enable the interrupt in the specific timer
+ * register and start timer
+ */
writel(COUNTER_BIT(0), NETX_GPIO_IRQ_ENABLE);
writel(NETX_GPIO_COUNTER_CTRL_IRQ_EN | NETX_GPIO_COUNTER_CTRL_RUN,
- NETX_GPIO_COUNTER_CTRL(0));
+ NETX_GPIO_COUNTER_CTRL(0));
setup_irq(NETX_IRQ_TIMER0, &netx_timer_irq);
/* Setup timer one for clocksource */
- writel(0, NETX_GPIO_COUNTER_CTRL(1));
- writel(0, NETX_GPIO_COUNTER_CURRENT(1));
- writel(0xFFFFFFFF, NETX_GPIO_COUNTER_MAX(1));
+ writel(0, NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));
+ writel(0, NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKSOURCE));
+ writel(0xffffffff, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKSOURCE));
- writel(NETX_GPIO_COUNTER_CTRL_RUN,
- NETX_GPIO_COUNTER_CTRL(1));
+ writel(NETX_GPIO_COUNTER_CTRL_RUN,
+ NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));
clocksource_netx.mult =
clocksource_hz2mult(CLOCK_TICK_RATE, clocksource_netx.shift);
clocksource_register(&clocksource_netx);
+
+ netx_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
+ netx_clockevent.shift);
+ netx_clockevent.max_delta_ns =
+ clockevent_delta2ns(0xfffffffe, &netx_clockevent);
+ /* with max_delta_ns >= delta2ns(0x800) the system currently runs fine.
+ * Adding some safety ... */
+ netx_clockevent.min_delta_ns =
+ clockevent_delta2ns(0xa00, &netx_clockevent);
+ netx_clockevent.cpumask = cpumask_of_cpu(0);
+ clockevents_register_device(&netx_clockevent);
}
struct sys_timer netx_timer = {
diff --git a/arch/arm/mach-netx/xc.c b/arch/arm/mach-netx/xc.c
index 32eabf5dfa4..8fc6205dc3a 100644
--- a/arch/arm/mach-netx/xc.c
+++ b/arch/arm/mach-netx/xc.c
@@ -92,10 +92,10 @@ static int xc_check_ptr(struct xc *x, unsigned long adr, unsigned int size)
return -1;
}
-static int xc_patch(struct xc *x, void *patch, int count)
+static int xc_patch(struct xc *x, const void *patch, int count)
{
unsigned int val, adr;
- unsigned int *data = patch;
+ const unsigned int *data = patch;
int i;
for (i = 0; i < count; i++) {
@@ -117,7 +117,7 @@ int xc_request_firmware(struct xc *x)
struct fw_header *head;
unsigned int size;
int i;
- void *src;
+ const void *src;
unsigned long dst;
sprintf(name, "xc%d.bin", x->no);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 10:47:11 +0000