freebsd-dev/sys/dev/ixl/i40e_osdep.c

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/******************************************************************************
Copyright (c) 2013-2015, Intel Corporation
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.
3. Neither the name of the Intel 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.
******************************************************************************/
/*$FreeBSD$*/
#include <sys/limits.h>
#include "ixl.h"
/********************************************************************
* Manage DMA'able memory.
*******************************************************************/
static void
i40e_dmamap_cb(void *arg, bus_dma_segment_t * segs, int nseg, int error)
{
if (error)
return;
*(bus_addr_t *) arg = segs->ds_addr;
return;
}
i40e_status
i40e_allocate_virt_mem(struct i40e_hw *hw, struct i40e_virt_mem *mem, u32 size)
{
mem->va = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
return(mem->va == NULL);
}
i40e_status
i40e_free_virt_mem(struct i40e_hw *hw, struct i40e_virt_mem *mem)
{
free(mem->va, M_DEVBUF);
return(0);
}
i40e_status
i40e_allocate_dma_mem(struct i40e_hw *hw, struct i40e_dma_mem *mem,
enum i40e_memory_type type __unused, u64 size, u32 alignment)
{
device_t dev = ((struct i40e_osdep *)hw->back)->dev;
int err;
err = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
alignment, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
size, /* maxsize */
1, /* nsegments */
size, /* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
NULL, /* lockfunc */
NULL, /* lockfuncarg */
&mem->tag);
if (err != 0) {
device_printf(dev,
"i40e_allocate_dma: bus_dma_tag_create failed, "
"error %u\n", err);
goto fail_0;
}
err = bus_dmamem_alloc(mem->tag, (void **)&mem->va,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &mem->map);
if (err != 0) {
device_printf(dev,
"i40e_allocate_dma: bus_dmamem_alloc failed, "
"error %u\n", err);
goto fail_1;
}
err = bus_dmamap_load(mem->tag, mem->map, mem->va,
size,
i40e_dmamap_cb,
&mem->pa,
BUS_DMA_NOWAIT);
if (err != 0) {
device_printf(dev,
"i40e_allocate_dma: bus_dmamap_load failed, "
"error %u\n", err);
goto fail_2;
}
mem->nseg = 1;
mem->size = size;
bus_dmamap_sync(mem->tag, mem->map,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
return (0);
fail_2:
bus_dmamem_free(mem->tag, mem->va, mem->map);
fail_1:
bus_dma_tag_destroy(mem->tag);
fail_0:
mem->map = NULL;
mem->tag = NULL;
return (err);
}
i40e_status
i40e_free_dma_mem(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
bus_dmamap_sync(mem->tag, mem->map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(mem->tag, mem->map);
bus_dmamem_free(mem->tag, mem->va, mem->map);
bus_dma_tag_destroy(mem->tag);
return (0);
}
void
i40e_init_spinlock(struct i40e_spinlock *lock)
{
mtx_init(&lock->mutex, "mutex",
"ixl spinlock", MTX_DEF | MTX_DUPOK);
}
void
i40e_acquire_spinlock(struct i40e_spinlock *lock)
{
mtx_lock(&lock->mutex);
}
void
i40e_release_spinlock(struct i40e_spinlock *lock)
{
mtx_unlock(&lock->mutex);
}
void
i40e_destroy_spinlock(struct i40e_spinlock *lock)
{
ixl: Update to 1.4.24-k. Changes by author: Eric Joyner ixl: Fix compile error when IXL_DEBUG is defined. Eric Joyner ixl: Fix taskqueues created in init() not being freed in stop(). Eric Joyner ixl: Add additional debug sysctls, for Tx and Rx queue stats. Eric Joyner ixl: Enable dynamic itr by default. Eric Joyner ixl: Edit spacing, comments, function signatures (to conform to style(9)). Eric Joyner ixl: Check for errors when tearing down msix interrupts. Eric Joyner ixl: Remove unnecessary register reads/writes. Eric Joyner ixl: Remove admin queue interrupt enable from general interrupt enable. Eric Joyner ixl: Update switch config after teardown/reset flow in init(). Eric Joyner ixl: Add additional admin queue error code output to admin queue call errors. Eric Joyner ixl: Don't destroy i40e spinlock if it's already uninitialized. Shannon Nelson i40e-shared: clean event descriptor before use Anjali Singhai Jain i40e-shared: When in promisc mode apply promisc mode to Tx Traffic as well Kevin Scott i40e_shared: Increase timeout when checking GLGEN_RSTAT_DEVSTATE bit Eric Joyner ixlv: Fix IXL_DEBUG compile issue. Eric Joyner ixlv: Attempt to fix panic/other issues when rapidly unloading/loading driver. Eric Joyner ixl/ixlv: Revert m_collapse() in ixl_xmit() to m_defrag(). Deepthi Kavalur i40e_shared: Trace logging HW capabilities Eric Joyner ixlv: Correctly unlock/relock around init() call in vc_completion(). Eric Joyner ixl: Stop preventing changing flow control mode for CR4 media. Eric Joyner ixl: Set IPv6 TCP offload flag when doing TSO. Differential Revision: https://reviews.freebsd.org/D6211 Reviewed by: sbruno, kmacy, jeffrey.e.pieper@intel.com MFC after: 2 weeks Sponsored by: Intel Corporation
2016-05-12 18:21:52 +00:00
if (mtx_initialized(&lock->mutex))
mtx_destroy(&lock->mutex);
}
void
i40e_msec_pause(int msecs)
{
int ticks_to_pause = (msecs * hz) / 1000;
int start_ticks = ticks;
if (cold || SCHEDULER_STOPPED()) {
i40e_msec_delay(msecs);
return;
}
while (1) {
kern_yield(PRI_USER);
int yielded_ticks = ticks - start_ticks;
if (yielded_ticks > ticks_to_pause)
break;
else if (yielded_ticks < 0
&& (yielded_ticks + INT_MAX + 1 > ticks_to_pause)) {
break;
}
}
}
/*
* Helper function for debug statement printing
*/
void
i40e_debug_shared(struct i40e_hw *hw, enum i40e_debug_mask mask, char *fmt, ...)
{
va_list args;
if (!(mask & ((struct i40e_hw *)hw)->debug_mask))
return;
va_start(args, fmt);
device_printf(((struct i40e_osdep *)hw->back)->dev, fmt, args);
va_end(args);
}
u16
i40e_read_pci_cfg(struct i40e_hw *hw, u32 reg)
{
u16 value;
value = pci_read_config(((struct i40e_osdep *)hw->back)->dev,
reg, 2);
return (value);
}
void
i40e_write_pci_cfg(struct i40e_hw *hw, u32 reg, u16 value)
{
pci_write_config(((struct i40e_osdep *)hw->back)->dev,
reg, value, 2);
return;
}