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Blackfin: bf537: demux port H mask A and emac rx ints 

The BF537 SIC combines the gpio port H mask A interrupts with the
emac rx interrupt, so we need to demux this in software.

It also combines the gpio port H mask B and the emac tx interrupts,
and the watchdog and port F mask B interrupts, but since we don't
support mask B yet, just add the defines for now.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
hifive-unleashed-5.1
Mike Frysinger 2011-04-15 13:04:59 -04:00
parent e2a8092c3f
commit 8c05410350
5 changed files with 77 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/blackfin/include/asm/irq_handler.h
View File

@ -60,5 +60,6 @@ extern void bfin_internal_unmask_irq(unsigned int irq);
struct irq_desc;
extern void bfin_demux_mac_status_irq(unsigned int, struct irq_desc *);
extern void bfin_demux_gpio_irq(unsigned int, struct irq_desc *);
#endif

2
arch/blackfin/kernel/bfin_gpio.c
View File

@ -535,7 +535,7 @@ static const unsigned int sic_iwr_irqs[] = {
#if defined(BF533_FAMILY)
IRQ_PROG_INTB
#elif defined(BF537_FAMILY)
IRQ_PROG_INTB, IRQ_PORTG_INTB, IRQ_MAC_TX
IRQ_PF_INTB_WATCH, IRQ_PORTG_INTB, IRQ_PH_INTB_MAC_TX
#elif defined(BF538_FAMILY)
IRQ_PORTF_INTB
#elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x)

33
arch/blackfin/mach-bf537/include/mach/irq.h
View File

@ -28,8 +28,8 @@
#define IRQ_UART1_TX BFIN_IRQ(14) /* DMA11 Interrupt (UART1 TX) */
#define IRQ_CAN_RX BFIN_IRQ(15) /* CAN Receive Interrupt */
#define IRQ_CAN_TX BFIN_IRQ(16) /* CAN Transmit Interrupt */
#define IRQ_MAC_RX BFIN_IRQ(17) /* DMA1 (Ethernet RX) Interrupt */
#define IRQ_MAC_TX BFIN_IRQ(18) /* DMA2 (Ethernet TX) Interrupt */
#define IRQ_PH_INTA_MAC_RX BFIN_IRQ(17) /* Port H Interrupt A & DMA1 Interrupt (Ethernet RX) */
#define IRQ_PH_INTB_MAC_TX BFIN_IRQ(18) /* Port H Interrupt B & DMA2 Interrupt (Ethernet TX) */
#define IRQ_TIMER0 BFIN_IRQ(19) /* Timer 0 */
#define IRQ_TIMER1 BFIN_IRQ(20) /* Timer 1 */
#define IRQ_TIMER2 BFIN_IRQ(21) /* Timer 2 */
@ -38,12 +38,11 @@
#define IRQ_TIMER5 BFIN_IRQ(24) /* Timer 5 */
#define IRQ_TIMER6 BFIN_IRQ(25) /* Timer 6 */
#define IRQ_TIMER7 BFIN_IRQ(26) /* Timer 7 */
#define IRQ_PROG_INTA BFIN_IRQ(27) /* PF Ports F&G (PF15:0) Interrupt A */
#define IRQ_PORTG_INTB BFIN_IRQ(28) /* PF Port G (PF15:0) Interrupt B */
#define IRQ_PF_INTA_PG_INTA BFIN_IRQ(27) /* Ports F&G Interrupt A */
#define IRQ_PORTG_INTB BFIN_IRQ(28) /* Port G Interrupt B */
#define IRQ_MEM_DMA0 BFIN_IRQ(29) /* (Memory DMA Stream 0) */
#define IRQ_MEM_DMA1 BFIN_IRQ(30) /* (Memory DMA Stream 1) */
#define IRQ_PROG_INTB BFIN_IRQ(31) /* PF Ports F (PF15:0) Interrupt B */
#define IRQ_WATCH BFIN_IRQ(32) /* Watch Dog Timer */
#define IRQ_PF_INTB_WATCH BFIN_IRQ(31) /* Watchdog & Port F Interrupt B */
#define SYS_IRQS 39
@ -118,7 +117,27 @@
#define IRQ_MAC_TXDMAERR 104 /* TX DMA Direction Error Interrupt */
#define IRQ_MAC_STMDONE 105 /* Station Mgt. Transfer Done Interrupt */
#define NR_MACH_IRQS (IRQ_MAC_STMDONE + 1)
#define IRQ_MAC_RX 106 /* DMA1 Interrupt (Ethernet RX) */
#define IRQ_PORTH_INTA 107 /* Port H Interrupt A */
#if 0 /* No Interrupt B support (yet) */
#define IRQ_MAC_TX 108 /* DMA2 Interrupt (Ethernet TX) */
#define IRQ_PORTH_INTB 109 /* Port H Interrupt B */
#else
#define IRQ_MAC_TX IRQ_PH_INTB_MAC_TX
#endif
#define IRQ_PORTF_INTA 110 /* Port F Interrupt A */
#define IRQ_PORTG_INTA 111 /* Port G Interrupt A */
#if 0 /* No Interrupt B support (yet) */
#define IRQ_WATCH 112 /* Watchdog Timer */
#define IRQ_PORTF_INTB 113 /* Port F Interrupt B */
#else
#define IRQ_WATCH IRQ_PF_INTB_WATCH
#endif
#define NR_MACH_IRQS (113 + 1)
/* IAR0 BIT FIELDS */
#define IRQ_PLL_WAKEUP_POS 0

39
arch/blackfin/mach-bf537/ints-priority.c
View File

@ -14,6 +14,7 @@
#include <asm/bfin5xx_spi.h>
#include <asm/bfin_sport.h>
#include <asm/bfin_can.h>
#include <asm/bfin_dma.h>
#include <asm/dpmc.h>
void __init program_IAR(void)
@ -157,6 +158,40 @@ static void bf537_demux_error_irq(unsigned int int_err_irq,
}
#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
static int mac_rx_int_mask;
static void bf537_mac_rx_mask_irq(struct irq_data *d)
{
mac_rx_int_mask &= ~(1L << (d->irq - IRQ_MAC_RX));
if (!mac_rx_int_mask)
bfin_internal_mask_irq(IRQ_PH_INTA_MAC_RX);
}
static void bf537_mac_rx_unmask_irq(struct irq_data *d)
{
bfin_internal_unmask_irq(IRQ_PH_INTA_MAC_RX);
mac_rx_int_mask |= 1L << (d->irq - IRQ_MAC_RX);
}
static struct irq_chip bf537_mac_rx_irqchip = {
.name = "ERROR",
.irq_ack = bfin_ack_noop,
.irq_mask_ack = bf537_mac_rx_mask_irq,
.irq_mask = bf537_mac_rx_mask_irq,
.irq_unmask = bf537_mac_rx_unmask_irq,
};
static void bf537_demux_mac_rx_irq(unsigned int int_irq,
struct irq_desc *desc)
{
if (bfin_read_DMA1_IRQ_STATUS() & (DMA_DONE | DMA_ERR))
bfin_handle_irq(IRQ_MAC_RX);
else
bfin_demux_gpio_irq(int_irq, desc);
}
#endif
void __init init_mach_irq(void)
{
int irq;
@ -172,6 +207,10 @@ void __init init_mach_irq(void)
handle_level_irq);
#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
irq_set_chained_handler(IRQ_PH_INTA_MAC_RX, bf537_demux_mac_rx_irq);
irq_set_chip_and_handler(IRQ_MAC_RX, &bf537_mac_rx_irqchip, handle_level_irq);
irq_set_chip_and_handler(IRQ_PORTH_INTA, &bf537_mac_rx_irqchip, handle_level_irq);
irq_set_chained_handler(IRQ_MAC_ERROR, bfin_demux_mac_status_irq);
#endif
}

22
arch/blackfin/mach-common/ints-priority.c
View File

@ -582,22 +582,20 @@ static void bfin_demux_gpio_block(unsigned int irq)
}
}
static void bfin_demux_gpio_irq(unsigned int inta_irq,
struct irq_desc *desc)
void bfin_demux_gpio_irq(unsigned int inta_irq,
struct irq_desc *desc)
{
unsigned int irq;
switch (inta_irq) {
#if defined(BF537_FAMILY)
case IRQ_PROG_INTA:
case IRQ_PF_INTA_PG_INTA:
bfin_demux_gpio_block(IRQ_PF0);
irq = IRQ_PG0;
break;
# if !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
case IRQ_MAC_RX:
case IRQ_PH_INTA_MAC_RX:
irq = IRQ_PH0;
break;
# endif
#elif defined(BF533_FAMILY)
case IRQ_PROG_INTA:
irq = IRQ_PF0;
@ -881,8 +879,8 @@ static int bfin_gpio_set_wake(struct irq_data *d, unsigned int state)
# define bfin_gpio_set_wake NULL
#endif
static void bfin_demux_gpio_irq(unsigned int inta_irq,
struct irq_desc *desc)
void bfin_demux_gpio_irq(unsigned int inta_irq,
struct irq_desc *desc)
{
u32 bank, pint_val;
u32 request, irq;
@ -1001,11 +999,11 @@ int __init init_arch_irq(void)
irq_set_chip(irq, &bfin_internal_irqchip);
switch (irq) {
#if defined(CONFIG_BF53x)
#if defined(BF537_FAMILY)
case IRQ_PH_INTA_MAC_RX:
case IRQ_PF_INTA_PG_INTA:
#elif defined(BF533_FAMILY)
case IRQ_PROG_INTA:
# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
case IRQ_MAC_RX:
# endif
#elif defined(CONFIG_BF54x)
case IRQ_PINT0:
case IRQ_PINT1: