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/*-
* Copyright(c) 2002-2011 Exar Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification are permitted provided 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.
*
* 3. Neither the name of the Exar Corporation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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: release/9.1.0/sys/dev/vxge/vxgehal/vxgehal-channel.c 221167 2011-04-28 14:33:15Z gnn $*/
#include <dev/vxge/vxgehal/vxgehal.h>
/*
* vxge_hal_channel_allocate - Allocate memory for channel
* @devh: Handle to the device object
* @vph: Handle to Virtual Path
* @type: Type of channel
* @length: Lengths of arrays
* @per_dtr_space: ULD requested per dtr space to be allocated in priv
* @userdata: User data to be passed back in the callback
*
* This function allocates required memory for the channel and various arrays
* in the channel
*/
__hal_channel_t *
vxge_hal_channel_allocate(
vxge_hal_device_h devh,
vxge_hal_vpath_h vph,
__hal_channel_type_e type,
u32 length,
u32 per_dtr_space,
void *userdata)
{
vxge_hal_device_t *hldev = (vxge_hal_device_t *) devh;
__hal_channel_t *channel;
u32 i, size = 0;
vxge_assert((devh != NULL) && (vph != NULL));
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("devh = 0x"VXGE_OS_STXFMT", vph = "
"0x"VXGE_OS_STXFMT", type = %d, length = %d, "
"per_dtr_space = %d, userdata = 0x"VXGE_OS_STXFMT,
(ptr_t) devh, (ptr_t) vph, type, length, per_dtr_space,
(ptr_t) userdata);
switch (type) {
case VXGE_HAL_CHANNEL_TYPE_FIFO:
size = sizeof(__hal_fifo_t);
break;
case VXGE_HAL_CHANNEL_TYPE_RING:
size = sizeof(__hal_ring_t);
break;
default:
vxge_assert(size);
break;
}
channel = (__hal_channel_t *) vxge_os_malloc(hldev->pdev, size);
if (channel == NULL) {
vxge_hal_trace_log_channel("<== %s:%s:%d Result: %d",
__FILE__, __func__, __LINE__, VXGE_HAL_ERR_OUT_OF_MEMORY);
return (NULL);
}
vxge_os_memzero(channel, size);
vxge_list_init(&channel->item);
channel->pdev = hldev->pdev;
channel->type = type;
channel->devh = devh;
channel->vph = vph;
channel->userdata = userdata;
channel->per_dtr_space = per_dtr_space;
channel->length = length;
channel->dtr_arr = (__hal_dtr_item_t *) vxge_os_malloc(hldev->pdev,
sizeof(__hal_dtr_item_t)*length);
if (channel->dtr_arr == NULL) {
vxge_hal_channel_free(channel);
vxge_hal_trace_log_channel("<== %s:%s:%d Result: %d",
__FILE__, __func__, __LINE__, VXGE_HAL_ERR_OUT_OF_MEMORY);
return (NULL);
}
vxge_os_memzero(channel->dtr_arr, sizeof(__hal_dtr_item_t)*length);
channel->compl_index = 0;
channel->reserve_index = 0;
for (i = 0; i < length; i++)
channel->dtr_arr[i].state = VXGE_HAL_CHANNEL_DTR_FREE;
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
return (channel);
}
/*
* __hal_channel_free - Free memory allocated for channel
* @channel: channel to be freed
*
* This function deallocates memory from the channel and various arrays
* in the channel
*/
void
vxge_hal_channel_free(
__hal_channel_t *channel)
{
int size = 0;
vxge_hal_device_t *hldev;
vxge_assert(channel != NULL);
hldev = (vxge_hal_device_t *) channel->devh;
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
(ptr_t) channel);
vxge_assert(channel->pdev);
if (channel->dtr_arr) {
vxge_os_free(channel->pdev, channel->dtr_arr,
sizeof(__hal_dtr_item_t)*channel->length);
channel->dtr_arr = NULL;
}
switch (channel->type) {
case VXGE_HAL_CHANNEL_TYPE_FIFO:
size = sizeof(__hal_fifo_t);
break;
case VXGE_HAL_CHANNEL_TYPE_RING:
size = sizeof(__hal_ring_t);
break;
default:
break;
}
vxge_os_free(channel->pdev, channel, size);
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
}
/*
* __hal_channel_initialize - Initialize a channel
* @channel: channel to be initialized
*
* This function initializes a channel by properly
* setting the various references
*/
vxge_hal_status_e
vxge_hal_channel_initialize(
__hal_channel_t *channel)
{
vxge_hal_device_t *hldev;
__hal_virtualpath_t *vpath;
vxge_assert(channel != NULL);
hldev = (vxge_hal_device_t *) channel->devh;
vpath = (__hal_virtualpath_t *)
((__hal_vpath_handle_t *) channel->vph)->vpath;
vxge_assert(vpath != NULL);
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
(ptr_t) channel);
switch (channel->type) {
case VXGE_HAL_CHANNEL_TYPE_FIFO:
vpath->fifoh = (vxge_hal_fifo_h) channel;
channel->stats =
&((__hal_fifo_t *) channel)->stats->common_stats;
break;
case VXGE_HAL_CHANNEL_TYPE_RING:
vpath->ringh = (vxge_hal_ring_h) channel;
channel->stats =
&((__hal_ring_t *) channel)->stats->common_stats;
break;
default:
break;
}
channel->is_initd = 1;
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
return (VXGE_HAL_OK);
}
/*
* __hal_channel_reset - Resets a channel
* @channel: channel to be reset
*
* This function resets a channel by properly setting the various references
*/
vxge_hal_status_e
__hal_channel_reset(
__hal_channel_t *channel)
{
u32 i;
__hal_device_t *hldev;
vxge_assert(channel != NULL);
hldev = (__hal_device_t *) channel->devh;
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
(ptr_t) channel);
vxge_assert(channel->pdev);
channel->compl_index = 0;
channel->reserve_index = 0;
for (i = 0; i < channel->length; i++) {
channel->dtr_arr[i].state =
VXGE_HAL_CHANNEL_DTR_FREE;
}
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
return (VXGE_HAL_OK);
}
/*
* vxge_hal_channel_terminate - Deinitializes a channel
* @channel: channel to be deinitialized
*
* This function deinitializes a channel by properly
* setting the various references
*/
void
vxge_hal_channel_terminate(
__hal_channel_t *channel)
{
__hal_device_t *hldev;
__hal_virtualpath_t *vpath;
vxge_assert(channel != NULL);
if (!channel || !channel->is_initd)
return;
hldev = (__hal_device_t *) channel->devh;
vpath = (__hal_virtualpath_t *)
((__hal_vpath_handle_t *) channel->vph)->vpath;
vxge_assert(vpath != NULL);
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
(ptr_t) channel);
switch (channel->type) {
case VXGE_HAL_CHANNEL_TYPE_FIFO:
vpath->fifoh = 0;
break;
case VXGE_HAL_CHANNEL_TYPE_RING:
vpath->ringh = 0;
break;
case VXGE_HAL_CHANNEL_TYPE_SEND_QUEUE:
vxge_list_remove(&channel->item);
vpath->sw_stats->obj_counts.no_sqs--;
break;
case VXGE_HAL_CHANNEL_TYPE_RECEIVE_QUEUE:
vxge_list_remove(&channel->item);
vpath->sw_stats->obj_counts.no_srqs--;
break;
case VXGE_HAL_CHANNEL_TYPE_COMPLETION_QUEUE:
vxge_list_remove(&channel->item);
vpath->sw_stats->obj_counts.no_cqrqs--;
break;
default:
break;
}
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
}
void
__hal_channel_init_pending_list(
vxge_hal_device_h devh)
{
__hal_device_t *hldev = (__hal_device_t *) devh;
vxge_assert(devh != NULL);
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("devh = 0x"VXGE_OS_STXFMT,
(ptr_t) devh);
vxge_list_init(&hldev->pending_channel_list);
#if defined(VXGE_HAL_VP_CHANNELS)
vxge_os_spin_lock_init(&hldev->pending_channel_lock, hldev->pdev);
#elif defined(VXGE_HAL_VP_CHANNELS_IRQ)
vxge_os_spin_lock_init_irq(&hldev->pending_channel_lock, hldev->irqh);
#endif
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
}
void
__hal_channel_insert_pending_list(
__hal_channel_t * channel)
{
__hal_device_t *hldev = (__hal_device_t *) channel->devh;
vxge_assert(channel != NULL);
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
(ptr_t) channel);
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_lock(&hldev->pending_channel_lock);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_lock_irq(&hldev->pending_channel_lock, flags);
#endif
vxge_list_insert_before(&channel->item, &hldev->pending_channel_list);
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_unlock(&hldev->pending_channel_lock);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_unlock_irq(&hldev->pending_channel_lock, flags);
#endif
__hal_channel_process_pending_list(channel->devh);
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
}
void
__hal_channel_process_pending_list(
vxge_hal_device_h devh)
{
vxge_hal_status_e status;
__hal_channel_t *channel;
__hal_device_t *hldev = (__hal_device_t *) devh;
vxge_assert(devh != NULL);
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("devh = 0x"VXGE_OS_STXFMT,
(ptr_t) devh);
for (;;) {
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_lock(&hldev->pending_channel_lock);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_lock_irq(&hldev->pending_channel_lock, flags);
#endif
channel = (__hal_channel_t *)
vxge_list_first_get(&hldev->pending_channel_list);
if (channel != NULL)
vxge_list_remove(&channel->item);
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_unlock(&hldev->pending_channel_lock);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_unlock_irq(&hldev->pending_channel_lock, flags);
#endif
if (channel == NULL) {
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
return;
}
switch (channel->type) {
default:
status = VXGE_HAL_OK;
break;
}
if (status == VXGE_HAL_ERR_OUT_OF_MEMORY) {
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_lock(&hldev->pending_channel_lock);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_lock_irq(&hldev->pending_channel_lock,
flags);
#endif
vxge_list_insert(&channel->item,
&hldev->pending_channel_list);
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_unlock(&hldev->pending_channel_lock);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_unlock_irq(&hldev->pending_channel_lock,
flags);
#endif
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
return;
}
}
}
void
__hal_channel_destroy_pending_list(
vxge_hal_device_h devh)
{
vxge_list_t *p, *n;
__hal_device_t *hldev = (__hal_device_t *) devh;
vxge_assert(devh != NULL);
vxge_hal_trace_log_channel("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_channel("devh = 0x"VXGE_OS_STXFMT,
(ptr_t) devh);
vxge_list_for_each_safe(p, n, &hldev->pending_channel_list) {
vxge_list_remove(p);
switch (((__hal_channel_t *) p)->type) {
default:
break;
}
}
#if defined(VXGE_HAL_PENDING_CHANNELS)
vxge_os_spin_lock_destroy(&hldev->pending_channel_lock,
hldev->header.pdev);
#elif defined(VXGE_HAL_PENDING_CHANNELS_IRQ)
vxge_os_spin_lock_destroy_irq(&hldev->pending_channel_lock,
hldev->header.pdev);
#endif
vxge_hal_trace_log_channel("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
}