#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/reboot.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/scatterlist.h>
#include <linux/iommu-helper.h>
#include <linux/export.h>
#include <asm/byteorder.h>
#include <asm/cache.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/parisc-device.h>
#include <asm/runway.h>
#include "iommu-helpers.h"

Data Structures
struct	ioa_registers

struct	ioc

Macros
#define	MODULE_NAME "ccio"

#define	DBG_INIT(x...)

#define	DBG_RUN(x...)

#define	DBG_RES(x...)

#define	DBG_RUN_SG(x...)

#define	CCIO_INLINE inline

#define	WRITE_U32(value, addr) __raw_writel(value, addr)

#define	READ_U32(addr) __raw_readl(addr)

#define	U2_IOA_RUNWAY 0x580

#define	U2_BC_GSC 0x501

#define	UTURN_IOA_RUNWAY 0x581

#define	UTURN_BC_GSC 0x502

#define	IOA_NORMAL_MODE 0x00020080 /* IO_CONTROL to turn on CCIO */

#define	CMD_TLB_DIRECT_WRITE 35 /* IO_COMMAND for I/O TLB Writes */

#define	CMD_TLB_PURGE 33 /* IO_COMMAND to Purge I/O TLB entry */

#define	IOVP_SIZE PAGE_SIZE

#define	IOVP_SHIFT PAGE_SHIFT

#define	IOVP_MASK PAGE_MASK

#define	CCIO_IOVA(iovp, offset) ((iovp) \| (offset))

#define	CCIO_IOVP(iova) ((iova) & IOVP_MASK)

#define	PDIR_INDEX(iovp) ((iovp)>>IOVP_SHIFT)

#define	MKIOVP(pdir_idx) ((long)(pdir_idx) << IOVP_SHIFT)

#define	MKIOVA(iovp, offset) (dma_addr_t)((long)iovp \| (long)offset)

#define	CCIO_SEARCH_LOOP(ioc, res_idx, mask, size)

#define	CCIO_FIND_FREE_MAPPING(ioa, res_idx, mask, size)

#define	CCIO_FREE_MAPPINGS(ioc, res_idx, mask, size)

#define	KERNEL_SPACE 0

#define	IOPDIR_VALID 0x01UL

#define	HINT_SAFE_DMA 0x02UL /* used for pci_alloc_consistent() pages */

#define	HINT_STOP_MOST 0x00UL /* only needed for "some EISA devices" */

#define	HINT_UDPATE_ENB 0x08UL /* not used/supported by U2 */

#define	HINT_PREFETCH 0x10UL /* for outbound pages which are not SAFE */

#define	PIDE_FLAG 0x80000000UL

#define	CUJO_20_STEP 0x10000000 /* inc upper nibble */

#define	CCIO_CHAINID_SHIFT 8

#define	CCIO_CHAINID_MASK 0xff

Typedefs
typedef unsigned long	space_t

Functions
void *	ccio_get_iommu (const struct parisc_device *dev)

void	ccio_cujo20_fixup (struct parisc_device *cujo, u32 iovp)

int	ccio_allocate_resource (const struct parisc_device dev, struct resource res, unsigned long size, unsigned long min, unsigned long max, unsigned long align)

int	ccio_request_resource (const struct parisc_device dev, struct resource res)

void __init	ccio_init (void)

Macro Definition Documentation

#define CCIO_CHAINID_MASK 0xff

Definition at line 1226 of file ccio-dma.c.

#define CCIO_CHAINID_SHIFT 8

Definition at line 1225 of file ccio-dma.c.

#define CCIO_FIND_FREE_MAPPING	(	ioa,
		res_idx,
		mask,
		size
	)

Value:

u##size *res_ptr = (u##size *)&((ioc)->res_map[ioa->res_hint & ~((size >> 3) - 1)]); \
       u##size *res_end = (u##size *)&(ioc)->res_map[ioa->res_size]; \
       CCIO_SEARCH_LOOP(ioc, res_idx, mask, size); \
       res_ptr = (u##size *)&(ioc)->res_map[0]; \
       CCIO_SEARCH_LOOP(ioa, res_idx, mask, size);

Definition at line 309 of file ccio-dma.c.

#define CCIO_FREE_MAPPINGS	(	ioc,
		res_idx,
		mask,
		size
	)

Value:

u##size *res_ptr = (u##size *)&((ioc)->res_map[res_idx]); \
        BUG_ON((*res_ptr & mask) != mask); \
        *res_ptr &= ~(mask);

Definition at line 417 of file ccio-dma.c.

#define CCIO_INLINE inline

Definition at line 100 of file ccio-dma.c.

#define CCIO_IOVA	(	iovp,
		offset
	)	((iovp) \| (offset))

Definition at line 283 of file ccio-dma.c.

#define CCIO_IOVP ( iova ) ((iova) & IOVP_MASK)

Definition at line 284 of file ccio-dma.c.

#define CCIO_SEARCH_LOOP	(	ioc,
		res_idx,
		mask,
		size
	)

Value:

for(; res_ptr < res_end; ++res_ptr) { \
        int ret;\
        unsigned int idx;\
        idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \
        ret = iommu_is_span_boundary(idx << 3, pages_needed, 0, boundary_size);\
        if ((0 == (*res_ptr & mask)) && !ret) { \
            *res_ptr |= mask; \
            res_idx = idx;\
			ioc->res_hint = res_idx + (size >> 3); \
            goto resource_found; \
        } \
    }

Definition at line 295 of file ccio-dma.c.

#define CMD_TLB_DIRECT_WRITE 35 /* IO_COMMAND for I/O TLB Writes */

Definition at line 110 of file ccio-dma.c.

#define CMD_TLB_PURGE 33 /* IO_COMMAND to Purge I/O TLB entry */

Definition at line 111 of file ccio-dma.c.

#define CUJO_20_STEP 0x10000000 /* inc upper nibble */

Definition at line 1178 of file ccio-dma.c.

#define DBG_INIT ( x... )

Definition at line 79 of file ccio-dma.c.

#define DBG_RES ( x... )

Definition at line 91 of file ccio-dma.c.

#define DBG_RUN ( x... )

Definition at line 85 of file ccio-dma.c.

#define DBG_RUN_SG ( x... )

Definition at line 97 of file ccio-dma.c.

#define HINT_PREFETCH 0x10UL /* for outbound pages which are not SAFE */

Definition at line 513 of file ccio-dma.c.

#define HINT_SAFE_DMA 0x02UL /* used for pci_alloc_consistent() pages */

Definition at line 506 of file ccio-dma.c.

#define HINT_STOP_MOST 0x00UL /* only needed for "some EISA devices" */

Definition at line 510 of file ccio-dma.c.

#define HINT_UDPATE_ENB 0x08UL /* not used/supported by U2 */

Definition at line 512 of file ccio-dma.c.

#define IOA_NORMAL_MODE 0x00020080 /* IO_CONTROL to turn on CCIO */

Definition at line 109 of file ccio-dma.c.

#define IOPDIR_VALID 0x01UL

Definition at line 505 of file ccio-dma.c.

#define IOVP_MASK PAGE_MASK

Definition at line 280 of file ccio-dma.c.

#define IOVP_SHIFT PAGE_SHIFT

Definition at line 279 of file ccio-dma.c.

#define IOVP_SIZE PAGE_SIZE

Definition at line 278 of file ccio-dma.c.

#define KERNEL_SPACE 0

Definition at line 477 of file ccio-dma.c.

#define MKIOVA	(	iovp,
		offset
	)	(dma_addr_t)((long)iovp \| (long)offset)

Definition at line 288 of file ccio-dma.c.

#define MKIOVP ( pdir_idx ) ((long)(pdir_idx) << IOVP_SHIFT)

Definition at line 287 of file ccio-dma.c.

#define MODULE_NAME "ccio"

Definition at line 62 of file ccio-dma.c.

#define PDIR_INDEX ( iovp ) ((iovp)>>IOVP_SHIFT)

Definition at line 286 of file ccio-dma.c.

#define PIDE_FLAG 0x80000000UL

Definition at line 884 of file ccio-dma.c.

#define READ_U32 ( addr ) __raw_readl(addr)

Definition at line 102 of file ccio-dma.c.

#define U2_BC_GSC 0x501

Definition at line 105 of file ccio-dma.c.

#define U2_IOA_RUNWAY 0x580

Definition at line 104 of file ccio-dma.c.

#define UTURN_BC_GSC 0x502

Definition at line 107 of file ccio-dma.c.

#define UTURN_IOA_RUNWAY 0x581

Definition at line 106 of file ccio-dma.c.

#define WRITE_U32	(	value,
		addr
	)	__raw_writel(value, addr)

Definition at line 101 of file ccio-dma.c.

Typedef Documentation

typedef unsigned long space_t

Definition at line 476 of file ccio-dma.c.

Function Documentation

int ccio_allocate_resource	(	const struct parisc_device *	dev,
		struct resource *	res,
		unsigned long	size,
		unsigned long	min,
		unsigned long	max,
		unsigned long	align
	)

Definition at line 1468 of file ccio-dma.c.

void ccio_cujo20_fixup	(	struct parisc_device *	cujo,
		u32	iovp
	)

Definition at line 1184 of file ccio-dma.c.

void* ccio_get_iommu ( const struct parisc_device * dev )

ccio_get_iommu - Find the iommu which controls this device : The parisc device.

This function searches through the registered IOMMU's and returns the appropriate IOMMU for the device based on its hardware path.

Definition at line 1169 of file ccio-dma.c.

void __init ccio_init ( void )

ccio_init - ccio initialization procedure.

Register this driver.

Definition at line 1591 of file ccio-dma.c.

int ccio_request_resource	(	const struct parisc_device *	dev,
		struct resource *	res
	)

Definition at line 1506 of file ccio-dma.c.

Data Structures

Macros

Typedefs

Functions

Macro Definition Documentation

Typedef Documentation

Function Documentation