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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] move setup_irq() into .init.text
# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxxxx>
# Date 1301756192 -3600
# Node ID c80281a99feb5964427390f5cd7900db907b47ee
# Parent ccdec92e41bde49594bd91be13954638151608ce
move setup_irq() into .init.text
With no modular drivers, all interrupt setup is supposed to happen
during boot.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
diff -r ccdec92e41bd -r c80281a99feb xen/arch/ia64/xen/irq.c
--- a/xen/arch/ia64/xen/irq.c Sat Apr 02 15:56:07 2011 +0100
+++ b/xen/arch/ia64/xen/irq.c Sat Apr 02 15:56:32 2011 +0100
@@ -266,7 +266,7 @@
/* Vectors reserved by xen (and thus not sharable with domains). */
unsigned long ia64_xen_vector[BITS_TO_LONGS(NR_IRQS)];
-int setup_irq_vector(unsigned int vec, struct irqaction * new)
+int __init setup_irq_vector(unsigned int vec, struct irqaction * new)
{
int res;
@@ -279,7 +279,7 @@
return res;
}
-void release_irq_vector(unsigned int vec)
+void __init release_irq_vector(unsigned int vec)
{
unsigned long flags;
irq_desc_t *desc;
diff -r ccdec92e41bd -r c80281a99feb xen/arch/ia64/xen/sn_console.c
--- a/xen/arch/ia64/xen/sn_console.c Sat Apr 02 15:56:07 2011 +0100
+++ b/xen/arch/ia64/xen/sn_console.c Sat Apr 02 15:56:32 2011 +0100
@@ -46,7 +46,7 @@
return 1;
}
-static void sn_endboot(struct serial_port *port)
+static void __init sn_endboot(struct serial_port *port)
{
struct sn_console_data *sndata = port->uart;
@@ -69,7 +69,7 @@
}
-static void sn_init_postirq(struct serial_port *port)
+static void __init sn_init_postirq(struct serial_port *port)
{
struct sn_console_data *sndata = port->uart;
@@ -77,9 +77,16 @@
set_timer(&sndata->timer, NOW() + MILLISECS(console_data.timeout_ms));
}
+static void sn_resume(struct serial_port *port)
+{
+ struct sn_console_data *sndata = port->uart;
+
+ set_timer(&sndata->timer, NOW() + MILLISECS(console_data.timeout_ms));
+}
static struct uart_driver sn_sal_console = {
.init_postirq = sn_init_postirq,
+ .resume = sn_resume,
.putc = sn_putc,
.getc = sn_getc,
.endboot = sn_endboot,
diff -r ccdec92e41bd -r c80281a99feb xen/arch/x86/irq.c
--- a/xen/arch/x86/irq.c Sat Apr 02 15:56:07 2011 +0100
+++ b/xen/arch/x86/irq.c Sat Apr 02 15:56:32 2011 +0100
@@ -677,7 +677,7 @@
return retval;
}
-void release_irq(unsigned int irq)
+void __init release_irq(unsigned int irq)
{
struct irq_desc *desc;
unsigned long flags;
@@ -700,7 +700,7 @@
xfree(action);
}
-int setup_irq(unsigned int irq, struct irqaction *new)
+int __init setup_irq(unsigned int irq, struct irqaction *new)
{
struct irq_desc *desc;
unsigned long flags;
diff -r ccdec92e41bd -r c80281a99feb xen/drivers/char/ns16550.c
--- a/xen/drivers/char/ns16550.c Sat Apr 02 15:56:07 2011 +0100
+++ b/xen/drivers/char/ns16550.c Sat Apr 02 15:56:32 2011 +0100
@@ -224,18 +224,13 @@
0x4, 0x1);
}
-static void __devinit ns16550_init_preirq(struct serial_port *port)
+static void ns16550_setup_preirq(struct ns16550 *uart)
{
- struct ns16550 *uart = port->uart;
unsigned char lcr;
unsigned int divisor;
pci_serial_early_init(uart);
- /* I/O ports are distinguished by their size (16 bits). */
- if ( uart->io_base >= 0x10000 )
- uart->remapped_io_base = (char *)ioremap(uart->io_base, 8);
-
lcr = (uart->data_bits - 5) | ((uart->stop_bits - 1) << 2) | uart->parity;
/* No interrupts. */
@@ -264,6 +259,17 @@
/* Enable and clear the FIFOs. Set a large trigger threshold. */
ns_write_reg(uart, FCR, FCR_ENABLE | FCR_CLRX | FCR_CLTX | FCR_TRG14);
+}
+
+static void __init ns16550_init_preirq(struct serial_port *port)
+{
+ struct ns16550 *uart = port->uart;
+
+ /* I/O ports are distinguished by their size (16 bits). */
+ if ( uart->io_base >= 0x10000 )
+ uart->remapped_io_base = (char *)ioremap(uart->io_base, 8);
+
+ ns16550_setup_preirq(uart);
/* Check this really is a 16550+. Otherwise we have no FIFOs. */
if ( ((ns_read_reg(uart, IIR) & 0xc0) == 0xc0) &&
@@ -271,34 +277,10 @@
port->tx_fifo_size = 16;
}
-static void __devinit ns16550_init_postirq(struct serial_port *port)
+static void ns16550_setup_postirq(struct ns16550 *uart)
{
- struct ns16550 *uart = port->uart;
- int rc, bits;
-
- if ( uart->irq < 0 )
- return;
-
- serial_async_transmit(port);
-
- if ( !uart->timer.function )
- init_timer(&uart->timer, ns16550_poll, port, 0);
-
- /* Calculate time to fill RX FIFO and/or empty TX FIFO for polling. */
- bits = uart->data_bits + uart->stop_bits + !!uart->parity;
- uart->timeout_ms = max_t(
- unsigned int, 1, (bits * port->tx_fifo_size * 1000) / uart->baud);
-
- if ( uart->irq == 0 )
- set_timer(&uart->timer, NOW() + MILLISECS(uart->timeout_ms));
- else
+ if ( uart->irq > 0 )
{
- uart->irqaction.handler = ns16550_interrupt;
- uart->irqaction.name = "ns16550";
- uart->irqaction.dev_id = port;
- if ( (rc = setup_irq(uart->irq, &uart->irqaction)) != 0 )
- printk("ERROR: Failed to allocate ns16550 IRQ %d\n", uart->irq);
-
/* Master interrupt enable; also keep DTR/RTS asserted. */
ns_write_reg(uart, MCR, MCR_OUT2 | MCR_DTR | MCR_RTS);
@@ -309,8 +291,45 @@
uart->probing = 1;
uart->intr_works = 0;
ns_write_reg(uart, THR, 0xff);
+ }
+
+ if ( uart->irq >= 0 )
set_timer(&uart->timer, NOW() + MILLISECS(uart->timeout_ms));
+}
+
+static void __init ns16550_init_postirq(struct serial_port *port)
+{
+ struct ns16550 *uart = port->uart;
+ int rc, bits;
+
+ if ( uart->irq < 0 )
+ return;
+
+ serial_async_transmit(port);
+
+ init_timer(&uart->timer, ns16550_poll, port, 0);
+
+ /* Calculate time to fill RX FIFO and/or empty TX FIFO for polling. */
+ bits = uart->data_bits + uart->stop_bits + !!uart->parity;
+ uart->timeout_ms = max_t(
+ unsigned int, 1, (bits * port->tx_fifo_size * 1000) / uart->baud);
+
+ if ( uart->irq > 0 )
+ {
+ uart->irqaction.handler = ns16550_interrupt;
+ uart->irqaction.name = "ns16550";
+ uart->irqaction.dev_id = port;
+ if ( (rc = setup_irq(uart->irq, &uart->irqaction)) != 0 )
+ printk("ERROR: Failed to allocate ns16550 IRQ %d\n", uart->irq);
}
+
+ ns16550_setup_postirq(uart);
+}
+
+static void ns16550_resume(struct serial_port *port)
+{
+ ns16550_setup_preirq(port->uart);
+ ns16550_setup_postirq(port->uart);
}
#ifdef CONFIG_X86
@@ -334,6 +353,7 @@
.init_preirq = ns16550_init_preirq,
.init_postirq = ns16550_init_postirq,
.endboot = ns16550_endboot,
+ .resume = ns16550_resume,
.tx_empty = ns16550_tx_empty,
.putc = ns16550_putc,
.getc = ns16550_getc,
diff -r ccdec92e41bd -r c80281a99feb xen/drivers/char/serial.c
--- a/xen/drivers/char/serial.c Sat Apr 02 15:56:07 2011 +0100
+++ b/xen/drivers/char/serial.c Sat Apr 02 15:56:32 2011 +0100
@@ -420,7 +420,7 @@
spin_unlock_irqrestore(&port->tx_lock, flags);
}
-void __devinit serial_init_preirq(void)
+void __init serial_init_preirq(void)
{
int i;
for ( i = 0; i < ARRAY_SIZE(com); i++ )
@@ -428,7 +428,7 @@
com[i].driver->init_preirq(&com[i]);
}
-void __devinit serial_init_postirq(void)
+void __init serial_init_postirq(void)
{
int i;
for ( i = 0; i < ARRAY_SIZE(com); i++ )
@@ -455,16 +455,18 @@
void serial_suspend(void)
{
- int i, irq;
+ int i;
for ( i = 0; i < ARRAY_SIZE(com); i++ )
- if ( (irq = serial_irq(i)) >= 0 )
- release_irq(irq);
+ if ( com[i].driver && com[i].driver->suspend )
+ com[i].driver->suspend(&com[i]);
}
void serial_resume(void)
{
- serial_init_preirq();
- serial_init_postirq();
+ int i;
+ for ( i = 0; i < ARRAY_SIZE(com); i++ )
+ if ( com[i].driver && com[i].driver->resume )
+ com[i].driver->resume(&com[i]);
}
void __init serial_register_uart(int idx, struct uart_driver *driver,
@@ -478,7 +480,7 @@
com[idx].tx_fifo_size = 1;
}
-void serial_async_transmit(struct serial_port *port)
+void __init serial_async_transmit(struct serial_port *port)
{
BUG_ON(!port->driver->tx_empty);
if ( port->txbuf != NULL )
diff -r ccdec92e41bd -r c80281a99feb xen/include/xen/serial.h
--- a/xen/include/xen/serial.h Sat Apr 02 15:56:07 2011 +0100
+++ b/xen/include/xen/serial.h Sat Apr 02 15:56:32 2011 +0100
@@ -51,6 +51,9 @@
void (*init_postirq)(struct serial_port *);
/* Hook to clean up after Xen bootstrap (before domain 0 runs). */
void (*endboot)(struct serial_port *);
+ /* Driver suspend/resume. */
+ void (*suspend)(struct serial_port *);
+ void (*resume)(struct serial_port *);
/* Transmit FIFO ready to receive up to @tx_fifo_size characters? */
int (*tx_empty)(struct serial_port *);
/* Put a character onto the serial line. */
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