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Commit 8fae097d authored by David S. Miller's avatar David S. Miller
Browse files

[SBUS]: Start cleaning up generic sbus support layer. 



In particular, move the IRQ probing out to sparc32/sparc64
arch specific code where it belongs.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d384ea69

arch/sparc/kernel/ioport.c

+45 −1
Original line number Diff line number Diff line
@@ -224,10 +224,54 @@ static void _sparc_free_io(struct resource *res) 


#ifdef CONFIG_SBUS



void sbus_set_sbus64(struct sbus_dev *sdev, int x) {

void sbus_set_sbus64(struct sbus_dev *sdev, int x)

{

	printk("sbus_set_sbus64: unsupported\n");

}



extern unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq);

void __init sbus_fill_device_irq(struct sbus_dev *sdev)

{

	struct linux_prom_irqs irqs[PROMINTR_MAX];

	int len;



	len = prom_getproperty(sdev->prom_node, "intr",

			       (char *)irqs, sizeof(irqs));

	if (len != -1) {

		sdev->num_irqs = len / 8;

		if (sdev->num_irqs == 0) {

			sdev->irqs[0] = 0;

		} else if (sparc_cpu_model == sun4d) {

			for (len = 0; len < sdev->num_irqs; len++)

				sdev->irqs[len] =

					sun4d_build_irq(sdev, irqs[len].pri);

		} else {

			for (len = 0; len < sdev->num_irqs; len++)

				sdev->irqs[len] = irqs[len].pri;

		}

	} else {

		int interrupts[PROMINTR_MAX];



		/* No "intr" node found-- check for "interrupts" node.

		 * This node contains SBus interrupt levels, not IPLs

		 * as in "intr", and no vector values.  We convert

		 * SBus interrupt levels to PILs (platform specific).

		 */

		len = prom_getproperty(sdev->prom_node, "interrupts",

				       (char *)interrupts, sizeof(interrupts));

		if (len == -1) {

			sdev->irqs[0] = 0;

			sdev->num_irqs = 0;

		} else {

			sdev->num_irqs = len / sizeof(int);

			for (len = 0; len < sdev->num_irqs; len++) {

				sdev->irqs[len] =

					sbint_to_irq(sdev, interrupts[len]);

			}

		}

	} 

}



/*

 * Allocate a chunk of memory suitable for DMA.

 * Typically devices use them for control blocks.

arch/sparc64/kernel/sbus.c

+21 −0
Original line number Diff line number Diff line
@@ -1225,3 +1225,24 @@ void __init sbus_iommu_init(int prom_node, struct sbus_bus *sbus) 


	sysio_register_error_handlers(sbus);

}



void sbus_fill_device_irq(struct sbus_dev *sdev)

{

	struct linux_prom_irqs irqs[PROMINTR_MAX];

	int len;



	len = prom_getproperty(sdev->prom_node, "interrupts",

			       (char *) irqs, sizeof(irqs));

	if (len == -1 || len == 0) {

		sdev->irqs[0] = 0;

		sdev->num_irqs = 0;

	} else {

		unsigned int pri = irqs[0].pri;



		sdev->num_irqs = 1;

		if (pri < 0x20)

			pri += sdev->slot * 8;



		sdev->irqs[0] =	sbus_build_irq(sdev->bus, pri);

	}

}

drivers/sbus/sbus.c

+19 −124
Original line number Diff line number Diff line 
/* $Id: sbus.c,v 1.100 2002/01/24 15:36:24 davem Exp $

 * sbus.c:  SBus support routines.

/* sbus.c: SBus support routines.

 *

 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

 * Copyright (C) 1995, 2006 David S. Miller (davem@davemloft.net)

 */



#include <linux/kernel.h>
@@ -17,29 +16,12 @@ 
#include <asm/bpp.h>

#include <asm/irq.h>



struct sbus_bus *sbus_root = NULL;



static struct linux_prom_irqs irqs[PROMINTR_MAX] __initdata = { { 0 } };

#ifdef CONFIG_SPARC32

static int interrupts[PROMINTR_MAX] __initdata = { 0 };

#endif

struct sbus_bus *sbus_root;



#ifdef CONFIG_PCI

extern int pcic_present(void);

#endif



/* Perhaps when I figure out more about the iommu we'll put a

 * device registration routine here that probe_sbus() calls to

 * setup the iommu for each Sbus.

 */



/* We call this for each SBus device, and fill the structure based

 * upon the prom device tree.  We return the start of memory after

 * the things we have allocated.

 */



/* #define DEBUG_FILL */



static void __init fill_sbus_device(int prom_node, struct sbus_dev *sdev)

{

	unsigned long address, base;
@@ -52,117 +34,30 @@ static void __init fill_sbus_device(int prom_node, struct sbus_dev *sdev) 
	len = prom_getproperty(prom_node, "reg",

			       (char *) sdev->reg_addrs,

			       sizeof(sdev->reg_addrs));

	if (len == -1) {

	sdev->num_registers = 0;

		goto no_regs;

	}



	if (len % sizeof(struct linux_prom_registers)) {

		prom_printf("fill_sbus_device: proplen for regs of %s "

			    " was %d, need multiple of %d\n",

			    sdev->prom_name, len,

			    (int) sizeof(struct linux_prom_registers));

		prom_halt();

	}

	if (len > (sizeof(struct linux_prom_registers) * PROMREG_MAX)) {

		prom_printf("fill_sbus_device: Too many register properties "

			    "for device %s, len=%d\n",

			    sdev->prom_name, len);

		prom_halt();

	}

	sdev->num_registers = len / sizeof(struct linux_prom_registers);

	if (len != -1) {

		sdev->num_registers =

			len / sizeof(struct linux_prom_registers);

		sdev->ranges_applied = 0;



		base = (unsigned long) sdev->reg_addrs[0].phys_addr;



		/* Compute the slot number. */

	if (base >= SUN_SBUS_BVADDR && sparc_cpu_model == sun4m) {

		if (base >= SUN_SBUS_BVADDR && sparc_cpu_model == sun4m)

			sdev->slot = sbus_dev_slot(base);

	} else {

		else

			sdev->slot = sdev->reg_addrs[0].which_io;

	}



no_regs:

	len = prom_getproperty(prom_node, "ranges",

			       (char *)sdev->device_ranges,

			       sizeof(sdev->device_ranges));

	if (len == -1) {

	sdev->num_device_ranges = 0;

		goto no_ranges;

	}

	if (len % sizeof(struct linux_prom_ranges)) {

		prom_printf("fill_sbus_device: proplen for ranges of %s "

			    " was %d, need multiple of %d\n",

			    sdev->prom_name, len,

			    (int) sizeof(struct linux_prom_ranges));

		prom_halt();

	}

	if (len > (sizeof(struct linux_prom_ranges) * PROMREG_MAX)) {

		prom_printf("fill_sbus_device: Too many range properties "

			    "for device %s, len=%d\n",

			    sdev->prom_name, len);

		prom_halt();

	}

	if (len != -1)

		sdev->num_device_ranges =

			len / sizeof(struct linux_prom_ranges);



no_ranges:

	/* XXX Unfortunately, IRQ issues are very arch specific.

	 * XXX Pull this crud out into an arch specific area

	 * XXX at some point. -DaveM

	 */

#ifdef CONFIG_SPARC64

	len = prom_getproperty(prom_node, "interrupts",

			       (char *) irqs, sizeof(irqs));

	if (len == -1 || len == 0) {

		sdev->irqs[0] = 0;

		sdev->num_irqs = 0;

	} else {

		unsigned int pri = irqs[0].pri;



		sdev->num_irqs = 1;

		if (pri < 0x20)

			pri += sdev->slot * 8;



		sdev->irqs[0] =	sbus_build_irq(sdev->bus, pri);

	}

#endif /* CONFIG_SPARC64 */



#ifdef CONFIG_SPARC32

	len = prom_getproperty(prom_node, "intr",

			       (char *)irqs, sizeof(irqs));

	if (len != -1) {

		sdev->num_irqs = len / 8;

		if (sdev->num_irqs == 0) {

			sdev->irqs[0] = 0;

		} else if (sparc_cpu_model == sun4d) {

			extern unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq);



			for (len = 0; len < sdev->num_irqs; len++)

				sdev->irqs[len] = sun4d_build_irq(sdev, irqs[len].pri);

		} else {

			for (len = 0; len < sdev->num_irqs; len++)

				sdev->irqs[len] = irqs[len].pri;

		}

	} else {

		/* No "intr" node found-- check for "interrupts" node.

		 * This node contains SBus interrupt levels, not IPLs

		 * as in "intr", and no vector values.  We convert 

		 * SBus interrupt levels to PILs (platform specific).

		 */

		len = prom_getproperty(prom_node, "interrupts", 

					(char *)interrupts, sizeof(interrupts));

		if (len == -1) {

			sdev->irqs[0] = 0;

			sdev->num_irqs = 0;

		} else {

			sdev->num_irqs = len / sizeof(int);

			for (len = 0; len < sdev->num_irqs; len++) {

				sdev->irqs[len] = sbint_to_irq(sdev, interrupts[len]);

			}

		}

	} 

#endif /* CONFIG_SPARC32 */

	sbus_fill_device_irq(sdev);

}



/* This routine gets called from whoever needs the sbus first, to scan

include/asm-sparc/sbus.h

+1 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ sbus_is_slave(struct sbus_dev *dev) 
#define sbus_can_dma_64bit(sdev)	(0) /* actually, sparc_cpu_model==sun4d */

#define sbus_can_burst64(sdev)		(0) /* actually, sparc_cpu_model==sun4d */

extern void sbus_set_sbus64(struct sbus_dev *, int);

extern void sbus_fill_device_irq(struct sbus_dev *);



/* These yield IOMMU mappings in consistent mode. */

extern void *sbus_alloc_consistent(struct sbus_dev *, long, u32 *dma_addrp);

include/asm-sparc64/sbus.h

+1 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ extern struct sbus_bus *sbus_root; 
#define sbus_can_dma_64bit(sdev)	(1)

#define sbus_can_burst64(sdev)		(1)

extern void sbus_set_sbus64(struct sbus_dev *, int);

extern void sbus_fill_device_irq(struct sbus_dev *);



/* These yield IOMMU mappings in consistent mode. */

extern void *sbus_alloc_consistent(struct sbus_dev *, size_t, dma_addr_t *dma_addrp);