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freebsd-skq/sys/dev/nxge/xge-osdep.h
jhb de01564f85 Don't bother clearing maps for static DMA allocations to NULL. Instead, 
leave them as purely opaque values that are only set by bus_dmamem_alloc().
2014-06-17 18:10:06 +00:00

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/*-
* Copyright (c) 2002-2007 Neterion, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef XGE_OSDEP_H
#define XGE_OSDEP_H
/**
* Includes and defines
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <sys/stddef.h>
#include <sys/types.h>
#include <sys/sockio.h>
#include <sys/proc.h>
#include <sys/mutex.h>
#include <sys/types.h>
#include <sys/endian.h>
#include <sys/sysctl.h>
#include <sys/endian.h>
#include <sys/socket.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/clock.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pci_private.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_var.h>
#include <net/bpf.h>
#include <net/if_types.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#define XGE_OS_PLATFORM_64BIT
#if BYTE_ORDER == BIG_ENDIAN
#define XGE_OS_HOST_BIG_ENDIAN
#elif BYTE_ORDER == LITTLE_ENDIAN
#define XGE_OS_HOST_LITTLE_ENDIAN
#endif
#define XGE_HAL_USE_5B_MODE
#ifdef XGE_TRACE_ASSERT
#undef XGE_TRACE_ASSERT
#endif
#define OS_NETSTACK_BUF struct mbuf *
#define XGE_LL_IP_FAST_CSUM(hdr, len) 0
#ifndef __DECONST
#define __DECONST(type, var) ((type)(uintrptr_t)(const void *)(var))
#endif
#define xge_os_ntohs ntohs
#define xge_os_ntohl ntohl
#define xge_os_htons htons
#define xge_os_htonl htonl
typedef struct xge_bus_resource_t {
bus_space_tag_t bus_tag; /* DMA Tag */
bus_space_handle_t bus_handle; /* Bus handle */
struct resource *bar_start_addr;/* BAR start address */
} xge_bus_resource_t;
typedef struct xge_dma_alloc_t {
bus_addr_t dma_phyaddr; /* Physical Address */
caddr_t dma_viraddr; /* Virtual Address */
bus_dma_tag_t dma_tag; /* DMA Tag */
bus_dmamap_t dma_map; /* DMA Map */
bus_dma_segment_t dma_segment; /* DMA Segment */
bus_size_t dma_size; /* Size */
int dma_nseg; /* Maximum scatter-gather segs. */
} xge_dma_alloc_t;
typedef struct xge_dma_mbuf_t {
bus_addr_t dma_phyaddr; /* Physical Address */
bus_dmamap_t dma_map; /* DMA Map */
}xge_dma_mbuf_t;
typedef struct xge_pci_info {
device_t device; /* Device */
struct resource *regmap0; /* Resource for BAR0 */
struct resource *regmap1; /* Resource for BAR1 */
void *bar0resource; /* BAR0 tag and handle */
void *bar1resource; /* BAR1 tag and handle */
} xge_pci_info_t;
/**
* Fixed size primitive types
*/
#define u8 uint8_t
#define u16 uint16_t
#define u32 uint32_t
#define u64 uint64_t
#define ulong_t unsigned long
#define uint unsigned int
#define ptrdiff_t ptrdiff_t
typedef bus_addr_t dma_addr_t;
typedef struct mtx spinlock_t;
typedef xge_pci_info_t *pci_dev_h;
typedef xge_bus_resource_t *pci_reg_h;
typedef xge_dma_alloc_t pci_dma_h;
typedef xge_dma_alloc_t pci_dma_acc_h;
typedef struct resource *pci_irq_h;
typedef xge_pci_info_t *pci_cfg_h;
/**
* "libc" functionality
*/
#define xge_os_memzero(addr, size) bzero(addr, size)
#define xge_os_memcpy(dst, src, size) bcopy(src, dst, size)
#define xge_os_memcmp memcmp
#define xge_os_strcpy strcpy
#define xge_os_strlen strlen
#define xge_os_snprintf snprintf
#define xge_os_sprintf sprintf
#define xge_os_printf(fmt...) { \
printf(fmt); \
printf("\n"); \
}
#define xge_os_vaprintf(fmt) { \
sprintf(fmt, fmt, "\n"); \
va_list va; \
va_start(va, fmt); \
vprintf(fmt, va); \
va_end(va); \
}
#define xge_os_vasprintf(buf, fmt) { \
va_list va; \
va_start(va, fmt); \
(void) vaprintf(buf, fmt, va); \
va_end(va); \
}
#define xge_os_timestamp(buf) { \
struct timeval current_time; \
gettimeofday(&current_time, 0); \
sprintf(buf, "%08li.%08li: ", current_time.tv_sec, \
current_time.tv_usec); \
}
#define xge_os_println xge_os_printf
/**
* Synchronization Primitives
*/
/* Initialize the spin lock */
#define xge_os_spin_lock_init(lockp, ctxh) { \
if(mtx_initialized(lockp) == 0) { \
mtx_init((lockp), "xge", NULL, MTX_DEF); \
} \
}
/* Initialize the spin lock (IRQ version) */
#define xge_os_spin_lock_init_irq(lockp, ctxh) { \
if(mtx_initialized(lockp) == 0) { \
mtx_init((lockp), "xge", NULL, MTX_DEF); \
} \
}
/* Destroy the lock */
#define xge_os_spin_lock_destroy(lockp, ctxh) { \
if(mtx_initialized(lockp) != 0) { \
mtx_destroy(lockp); \
} \
}
/* Destroy the lock (IRQ version) */
#define xge_os_spin_lock_destroy_irq(lockp, ctxh) { \
if(mtx_initialized(lockp) != 0) { \
mtx_destroy(lockp); \
} \
}
/* Acquire the lock */
#define xge_os_spin_lock(lockp) { \
if(mtx_owned(lockp) == 0) mtx_lock(lockp); \
}
/* Release the lock */
#define xge_os_spin_unlock(lockp) { \
mtx_unlock(lockp); \
}
/* Acquire the lock (IRQ version) */
#define xge_os_spin_lock_irq(lockp, flags) { \
flags = MTX_QUIET; \
if(mtx_owned(lockp) == 0) mtx_lock_flags(lockp, flags); \
}
/* Release the lock (IRQ version) */
#define xge_os_spin_unlock_irq(lockp, flags) { \
flags = MTX_QUIET; \
mtx_unlock_flags(lockp, flags); \
}
#if __FreeBSD_version > 800053
/* Write memory barrier */
#define xge_os_wmb() wmb()
#else
#define xge_os_wmb()
#endif
/* Delay (in micro seconds) */
#define xge_os_udelay(us) DELAY(us)
/* Delay (in milli seconds) */
#define xge_os_mdelay(ms) DELAY(ms * 1000)
/* Compare and exchange */
//#define xge_os_cmpxchg(targetp, cmd, newval)
/**
* Misc primitives
*/
#define xge_os_unlikely(x) (x)
#define xge_os_prefetch(x) (x=x)
#define xge_os_prefetchw(x) (x=x)
#define xge_os_bug(fmt...) printf(fmt)
#define xge_os_htohs ntohs
#define xge_os_ntohl ntohl
#define xge_os_htons htons
#define xge_os_htonl htonl
/**
* Compiler Stuffs
*/
#define __xge_os_attr_cacheline_aligned
#define __xge_os_cacheline_size 32
/**
* Memory Primitives
*/
#define XGE_OS_INVALID_DMA_ADDR ((dma_addr_t)0)
/**
* xge_os_malloc
* Allocate non DMA-able memory.
* @pdev: Device context.
* @size: Size to allocate.
*
* Allocate @size bytes of memory. This allocation can sleep, and therefore,
* and therefore it requires process context. In other words, xge_os_malloc()
* cannot be called from the interrupt context. Use xge_os_free() to free the
* allocated block.
*
* Returns: Pointer to allocated memory, NULL - on failure.
*
* See also: xge_os_free().
*/
static inline void *
xge_os_malloc(pci_dev_h pdev, unsigned long size) {
void *vaddr = malloc((size), M_DEVBUF, M_NOWAIT | M_ZERO);
if(vaddr != NULL) {
XGE_OS_MEMORY_CHECK_MALLOC(vaddr, size, __FILE__, __LINE__);
xge_os_memzero(vaddr, size);
}
return (vaddr);
}
/**
* xge_os_free
* Free non DMA-able memory.
* @pdev: Device context.
* @vaddr: Address of the allocated memory block.
* @size: Some OS's require to provide size on free
*
* Free the memory area obtained via xge_os_malloc(). This call may also sleep,
* and therefore it cannot be used inside interrupt.
*
* See also: xge_os_malloc().
*/
static inline void
xge_os_free(pci_dev_h pdev, const void *vaddr, unsigned long size) {
XGE_OS_MEMORY_CHECK_FREE(vaddr, size);
free(__DECONST(void *, vaddr), M_DEVBUF);
}
static void
xge_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) {
if(error) return;
*(bus_addr_t *) arg = segs->ds_addr;
return;
}
/**
* xge_os_dma_malloc
* Allocate DMA-able memory.
* @pdev: Device context. Used to allocate/pin/map/unmap DMA-able memory.
* @size: Size (in bytes) to allocate.
* @dma_flags: XGE_OS_DMA_CACHELINE_ALIGNED, XGE_OS_DMA_STREAMING,
* XGE_OS_DMA_CONSISTENT (Note that the last two flags are mutually exclusive.)
* @p_dmah: Handle used to map the memory onto the corresponding device memory
* space. See xge_os_dma_map(). The handle is an out-parameter returned by the
* function.
* @p_dma_acch: One more DMA handle used subsequently to free the DMA object
* (via xge_os_dma_free()).
*
* Allocate DMA-able contiguous memory block of the specified @size. This memory
* can be subsequently freed using xge_os_dma_free().
* Note: can be used inside interrupt context.
*
* Returns: Pointer to allocated memory(DMA-able), NULL on failure.
*/
static inline void *
xge_os_dma_malloc(pci_dev_h pdev, unsigned long size, int dma_flags,
pci_dma_h *p_dmah, pci_dma_acc_h *p_dma_acch) {
int retValue = bus_dma_tag_create(
bus_get_dma_tag(pdev->device), /* Parent */
PAGE_SIZE, /* Alignment no specific alignment */
0, /* Bounds */
BUS_SPACE_MAXADDR, /* Low Address */
BUS_SPACE_MAXADDR, /* High Address */
NULL, /* Filter */
NULL, /* Filter arg */
size, /* Max Size */
1, /* n segments */
size, /* max segment size */
BUS_DMA_ALLOCNOW, /* Flags */
NULL, /* lockfunction */
NULL, /* lock arg */
&p_dmah->dma_tag); /* DMA tag */
if(retValue != 0) {
xge_os_printf("bus_dma_tag_create failed\n")
goto fail_1;
}
p_dmah->dma_size = size;
retValue = bus_dmamem_alloc(p_dmah->dma_tag,
(void **)&p_dmah->dma_viraddr, BUS_DMA_NOWAIT, &p_dmah->dma_map);
if(retValue != 0) {
xge_os_printf("bus_dmamem_alloc failed\n")
goto fail_2;
}
XGE_OS_MEMORY_CHECK_MALLOC(p_dmah->dma_viraddr, p_dmah->dma_size,
__FILE__, __LINE__);
return(p_dmah->dma_viraddr);
fail_2: bus_dma_tag_destroy(p_dmah->dma_tag);
fail_1: return(NULL);
}
/**
* xge_os_dma_free
* Free previously allocated DMA-able memory.
* @pdev: Device context. Used to allocate/pin/map/unmap DMA-able memory.
* @vaddr: Virtual address of the DMA-able memory.
* @p_dma_acch: DMA handle used to free the resource.
* @p_dmah: DMA handle used for mapping. See xge_os_dma_malloc().
*
* Free DMA-able memory originally allocated by xge_os_dma_malloc().
* Note: can be used inside interrupt.
* See also: xge_os_dma_malloc().
*/
static inline void
xge_os_dma_free(pci_dev_h pdev, const void *vaddr, int size,
pci_dma_acc_h *p_dma_acch, pci_dma_h *p_dmah)
{
XGE_OS_MEMORY_CHECK_FREE(p_dmah->dma_viraddr, size);
bus_dmamem_free(p_dmah->dma_tag, p_dmah->dma_viraddr, p_dmah->dma_map);
bus_dma_tag_destroy(p_dmah->dma_tag);
p_dmah->dma_tag = NULL;
p_dmah->dma_viraddr = NULL;
return;
}
/**
* IO/PCI/DMA Primitives
*/
#define XGE_OS_DMA_DIR_TODEVICE 0
#define XGE_OS_DMA_DIR_FROMDEVICE 1
#define XGE_OS_DMA_DIR_BIDIRECTIONAL 2
/**
* xge_os_pci_read8
* Read one byte from device PCI configuration.
* @pdev: Device context. Some OSs require device context to perform PIO and/or
* config space IO.
* @cfgh: PCI configuration space handle.
* @where: Offset in the PCI configuration space.
* @val: Address of the result.
*
* Read byte value from the specified @regh PCI configuration space at the
* specified offset = @where.
* Returns: 0 - success, non-zero - failure.
*/
#define xge_os_pci_read8(pdev, cfgh, where, val) \
(*(val) = pci_read_config(pdev->device, where, 1))
/**
* xge_os_pci_write8
* Write one byte into device PCI configuration.
* @pdev: Device context. Some OSs require device context to perform PIO and/or
* config space IO.
* @cfgh: PCI configuration space handle.
* @where: Offset in the PCI configuration space.
* @val: Value to write.
*
* Write byte value into the specified PCI configuration space
* Returns: 0 - success, non-zero - failure.
*/
#define xge_os_pci_write8(pdev, cfgh, where, val) \
pci_write_config(pdev->device, where, val, 1)
/**
* xge_os_pci_read16
* Read 16bit word from device PCI configuration.
* @pdev: Device context.
* @cfgh: PCI configuration space handle.
* @where: Offset in the PCI configuration space.
* @val: Address of the 16bit result.
*
* Read 16bit value from the specified PCI configuration space at the
* specified offset.
* Returns: 0 - success, non-zero - failure.
*/
#define xge_os_pci_read16(pdev, cfgh, where, val) \
(*(val) = pci_read_config(pdev->device, where, 2))
/**
* xge_os_pci_write16
* Write 16bit word into device PCI configuration.
* @pdev: Device context.
* @cfgh: PCI configuration space handle.
* @where: Offset in the PCI configuration space.
* @val: Value to write.
*
* Write 16bit value into the specified @offset in PCI configuration space.
* Returns: 0 - success, non-zero - failure.
*/
#define xge_os_pci_write16(pdev, cfgh, where, val) \
pci_write_config(pdev->device, where, val, 2)
/**
* xge_os_pci_read32
* Read 32bit word from device PCI configuration.
* @pdev: Device context.
* @cfgh: PCI configuration space handle.
* @where: Offset in the PCI configuration space.
* @val: Address of 32bit result.
*
* Read 32bit value from the specified PCI configuration space at the
* specified offset.
* Returns: 0 - success, non-zero - failure.
*/
#define xge_os_pci_read32(pdev, cfgh, where, val) \
(*(val) = pci_read_config(pdev->device, where, 4))
/**
* xge_os_pci_write32
* Write 32bit word into device PCI configuration.
* @pdev: Device context.
* @cfgh: PCI configuration space handle.
* @where: Offset in the PCI configuration space.
* @val: Value to write.
*
* Write 32bit value into the specified @offset in PCI configuration space.
* Returns: 0 - success, non-zero - failure.
*/
#define xge_os_pci_write32(pdev, cfgh, where, val) \
pci_write_config(pdev->device, where, val, 4)
/**
* xge_os_pio_mem_read8
* Read 1 byte from device memory mapped space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @addr: Address in device memory space.
*
* Returns: 1 byte value read from the specified (mapped) memory space address.
*/
static inline u8
xge_os_pio_mem_read8(pci_dev_h pdev, pci_reg_h regh, void *addr)
{
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)
(((xge_bus_resource_t *)(regh))->bar_start_addr);
return bus_space_read_1(tag, handle, (caddr_t)(addr) - addrss);
}
/**
* xge_os_pio_mem_write8
* Write 1 byte into device memory mapped space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @val: Value to write.
* @addr: Address in device memory space.
*
* Write byte value into the specified (mapped) device memory space.
*/
static inline void
xge_os_pio_mem_write8(pci_dev_h pdev, pci_reg_h regh, u8 val, void *addr)
{
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)
(((xge_bus_resource_t *)(regh))->bar_start_addr);
bus_space_write_1(tag, handle, (caddr_t)(addr) - addrss, val);
}
/**
* xge_os_pio_mem_read16
* Read 16bit from device memory mapped space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @addr: Address in device memory space.
*
* Returns: 16bit value read from the specified (mapped) memory space address.
*/
static inline u16
xge_os_pio_mem_read16(pci_dev_h pdev, pci_reg_h regh, void *addr)
{
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)
(((xge_bus_resource_t *)(regh))->bar_start_addr);
return bus_space_read_2(tag, handle, (caddr_t)(addr) - addrss);
}
/**
* xge_os_pio_mem_write16
* Write 16bit into device memory mapped space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @val: Value to write.
* @addr: Address in device memory space.
*
* Write 16bit value into the specified (mapped) device memory space.
*/
static inline void
xge_os_pio_mem_write16(pci_dev_h pdev, pci_reg_h regh, u16 val, void *addr)
{
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)(((xge_bus_resource_t *)(regh))->bar_start_addr);
bus_space_write_2(tag, handle, (caddr_t)(addr) - addrss, val);
}
/**
* xge_os_pio_mem_read32
* Read 32bit from device memory mapped space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @addr: Address in device memory space.
*
* Returns: 32bit value read from the specified (mapped) memory space address.
*/
static inline u32
xge_os_pio_mem_read32(pci_dev_h pdev, pci_reg_h regh, void *addr)
{
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)
(((xge_bus_resource_t *)(regh))->bar_start_addr);
return bus_space_read_4(tag, handle, (caddr_t)(addr) - addrss);
}
/**
* xge_os_pio_mem_write32
* Write 32bit into device memory space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @val: Value to write.
* @addr: Address in device memory space.
*
* Write 32bit value into the specified (mapped) device memory space.
*/
static inline void
xge_os_pio_mem_write32(pci_dev_h pdev, pci_reg_h regh, u32 val, void *addr)
{
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)(((xge_bus_resource_t *)(regh))->bar_start_addr);
bus_space_write_4(tag, handle, (caddr_t)(addr) - addrss, val);
}
/**
* xge_os_pio_mem_read64
* Read 64bit from device memory mapped space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @addr: Address in device memory space.
*
* Returns: 64bit value read from the specified (mapped) memory space address.
*/
static inline u64
xge_os_pio_mem_read64(pci_dev_h pdev, pci_reg_h regh, void *addr)
{
u64 value1, value2;
bus_space_tag_t tag =
(bus_space_tag_t)(((xge_bus_resource_t *)regh)->bus_tag);
bus_space_handle_t handle =
(bus_space_handle_t)(((xge_bus_resource_t *)regh)->bus_handle);
caddr_t addrss = (caddr_t)
(((xge_bus_resource_t *)(regh))->bar_start_addr);
value1 = bus_space_read_4(tag, handle, (caddr_t)(addr) + 4 - addrss);
value1 <<= 32;
value2 = bus_space_read_4(tag, handle, (caddr_t)(addr) - addrss);
value1 |= value2;
return value1;
}
/**
* xge_os_pio_mem_write64
* Write 32bit into device memory space.
* @pdev: Device context.
* @regh: PCI configuration space handle.
* @val: Value to write.
* @addr: Address in device memory space.
*
* Write 64bit value into the specified (mapped) device memory space.
*/
static inline void
xge_os_pio_mem_write64(pci_dev_h pdev, pci_reg_h regh, u64 val, void *addr)
{
u32 vall = val & 0xffffffff;
xge_os_pio_mem_write32(pdev, regh, vall, addr);
xge_os_pio_mem_write32(pdev, regh, val >> 32, ((caddr_t)(addr) + 4));
}
/**
* FIXME: document
*/
#define xge_os_flush_bridge xge_os_pio_mem_read64
/**
* xge_os_dma_map
* Map DMA-able memory block to, or from, or to-and-from device.
* @pdev: Device context. Used to allocate/pin/map/unmap DMA-able memory.
* @dmah: DMA handle used to map the memory block. Obtained via
* xge_os_dma_malloc().
* @vaddr: Virtual address of the DMA-able memory.
* @size: Size (in bytes) to be mapped.
* @dir: Direction of this operation (XGE_OS_DMA_DIR_TODEVICE, etc.)
* @dma_flags: XGE_OS_DMA_CACHELINE_ALIGNED, XGE_OS_DMA_STREAMING,
* XGE_OS_DMA_CONSISTENT (Note that the last two flags are mutually exclusive).
*
* Map a single memory block.
*
* Returns: DMA address of the memory block, XGE_OS_INVALID_DMA_ADDR on failure.
*
* See also: xge_os_dma_malloc(), xge_os_dma_unmap(), xge_os_dma_sync().
*/
static inline dma_addr_t
xge_os_dma_map(pci_dev_h pdev, pci_dma_h dmah, void *vaddr, size_t size,
int dir, int dma_flags)
{
int retValue =
bus_dmamap_load(dmah.dma_tag, dmah.dma_map, dmah.dma_viraddr,
dmah.dma_size, xge_dmamap_cb, &dmah.dma_phyaddr, BUS_DMA_NOWAIT);
if(retValue != 0) {
xge_os_printf("bus_dmamap_load_ failed\n")
return XGE_OS_INVALID_DMA_ADDR;
}
dmah.dma_size = size;
return dmah.dma_phyaddr;
}
/**
* xge_os_dma_unmap - Unmap DMA-able memory.
* @pdev: Device context. Used to allocate/pin/map/unmap DMA-able memory.
* @dmah: DMA handle used to map the memory block. Obtained via
* xge_os_dma_malloc().
* @dma_addr: DMA address of the block. Obtained via xge_os_dma_map().
* @size: Size (in bytes) to be unmapped.
* @dir: Direction of this operation (XGE_OS_DMA_DIR_TODEVICE, etc.)
*
* Unmap a single DMA-able memory block that was previously mapped using
* xge_os_dma_map().
* See also: xge_os_dma_malloc(), xge_os_dma_map().
*/
static inline void
xge_os_dma_unmap(pci_dev_h pdev, pci_dma_h dmah, dma_addr_t dma_addr,
size_t size, int dir)
{
bus_dmamap_unload(dmah.dma_tag, dmah.dma_map);
return;
}
/**
* xge_os_dma_sync - Synchronize mapped memory.
* @pdev: Device context. Used to allocate/pin/map/unmap DMA-able memory.
* @dmah: DMA handle used to map the memory block. Obtained via
* xge_os_dma_malloc().
* @dma_addr: DMA address of the block. Obtained via xge_os_dma_map().
* @dma_offset: Offset from start of the blocke. Used by Solaris only.
* @length: Size of the block.
* @dir: Direction of this operation (XGE_OS_DMA_DIR_TODEVICE, etc.)
*
* Make physical and CPU memory consistent for a single streaming mode DMA
* translation. This API compiles to NOP on cache-coherent platforms. On
* non cache-coherent platforms, depending on the direction of the "sync"
* operation, this API will effectively either invalidate CPU cache (that might
* contain old data), or flush CPU cache to update physical memory.
* See also: xge_os_dma_malloc(), xge_os_dma_map(),
* xge_os_dma_unmap().
*/
static inline void
xge_os_dma_sync(pci_dev_h pdev, pci_dma_h dmah, dma_addr_t dma_addr,
u64 dma_offset, size_t length, int dir)
{
bus_dmasync_op_t syncop;
switch(dir) {
case XGE_OS_DMA_DIR_TODEVICE:
syncop = BUS_DMASYNC_PREWRITE | BUS_DMASYNC_POSTWRITE;
break;
case XGE_OS_DMA_DIR_FROMDEVICE:
syncop = BUS_DMASYNC_PREREAD | BUS_DMASYNC_POSTREAD;
break;
default:
syncop = BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREWRITE;
break;
}
bus_dmamap_sync(dmah.dma_tag, dmah.dma_map, syncop);
return;
}
#endif /* XGE_OSDEP_H */
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