Release 4.7 drivers/net/ethernet/cavium/liquidio/octeon_main.h
/**********************************************************************
* Author: Cavium, Inc.
*
* Contact: support@cavium.com
* Please include "LiquidIO" in the subject.
*
* Copyright (c) 2003-2015 Cavium, Inc.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium, Inc. for more information
**********************************************************************/
/*! \file octeon_main.h
* \brief Host Driver: This file is included by all host driver source files
* to include common definitions.
*/
#ifndef _OCTEON_MAIN_H_
#define _OCTEON_MAIN_H_
#if BITS_PER_LONG == 32
#define CVM_CAST64(v) ((long long)(v))
#elif BITS_PER_LONG == 64
#define CVM_CAST64(v) ((long long)(long)(v))
#else
#error "Unknown system architecture"
#endif
#define DRV_NAME "LiquidIO"
/**
* \brief determines if a given console has debug enabled.
* @param console console to check
* @returns 1 = enabled. 0 otherwise
*/
int octeon_console_debug_enabled(u32 console);
/* BQL-related functions */
void octeon_report_sent_bytes_to_bql(void *buf, int reqtype);
void octeon_update_tx_completion_counters(void *buf, int reqtype,
unsigned int *pkts_compl,
unsigned int *bytes_compl);
void octeon_report_tx_completion_to_bql(void *txq, unsigned int pkts_compl,
unsigned int bytes_compl);
/** Swap 8B blocks */
static inline void octeon_swap_8B_data(u64 *data, u32 blocks)
{
while (blocks) {
cpu_to_be64s(data);
blocks--;
data++;
}
}
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/**
* \brief unmaps a PCI BAR
* @param oct Pointer to Octeon device
* @param baridx bar index
*/
static inline void octeon_unmap_pci_barx(struct octeon_device *oct, int baridx)
{
dev_dbg(&oct->pci_dev->dev, "Freeing PCI mapped regions for Bar%d\n",
baridx);
if (oct->mmio[baridx].done)
iounmap(oct->mmio[baridx].hw_addr);
if (oct->mmio[baridx].start)
pci_release_region(oct->pci_dev, baridx * 2);
}
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/**
* \brief maps a PCI BAR
* @param oct Pointer to Octeon device
* @param baridx bar index
* @param max_map_len maximum length of mapped memory
*/
static inline int octeon_map_pci_barx(struct octeon_device *oct,
int baridx, int max_map_len)
{
u32 mapped_len = 0;
if (pci_request_region(oct->pci_dev, baridx * 2, DRV_NAME)) {
dev_err(&oct->pci_dev->dev, "pci_request_region failed for bar %d\n",
baridx);
return 1;
}
oct->mmio[baridx].start = pci_resource_start(oct->pci_dev, baridx * 2);
oct->mmio[baridx].len = pci_resource_len(oct->pci_dev, baridx * 2);
mapped_len = oct->mmio[baridx].len;
if (!mapped_len)
return 1;
if (max_map_len && (mapped_len > max_map_len))
mapped_len = max_map_len;
oct->mmio[baridx].hw_addr =
ioremap(oct->mmio[baridx].start, mapped_len);
oct->mmio[baridx].mapped_len = mapped_len;
dev_dbg(&oct->pci_dev->dev, "BAR%d start: 0x%llx mapped %u of %u bytes\n",
baridx, oct->mmio[baridx].start, mapped_len,
oct->mmio[baridx].len);
if (!oct->mmio[baridx].hw_addr) {
dev_err(&oct->pci_dev->dev, "error ioremap for bar %d\n",
baridx);
return 1;
}
oct->mmio[baridx].done = 1;
return 0;
}
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static inline void *
cnnic_alloc_aligned_dma(struct pci_dev *pci_dev,
u32 size,
u32 *alloc_size,
size_t *orig_ptr,
size_t *dma_addr __attribute__((unused)))
{
int retries = 0;
void *ptr = NULL;
#define OCTEON_MAX_ALLOC_RETRIES 1
do {
ptr =
(void *)__get_free_pages(GFP_KERNEL,
get_order(size));
if ((unsigned long)ptr & 0x07) {
free_pages((unsigned long)ptr, get_order(size));
ptr = NULL;
/* Increment the size required if the first
* attempt failed.
*/
if (!retries)
size += 7;
}
retries++;
} while ((retries <= OCTEON_MAX_ALLOC_RETRIES) && !ptr);
*alloc_size = size;
*orig_ptr = (unsigned long)ptr;
if ((unsigned long)ptr & 0x07)
ptr = (void *)(((unsigned long)ptr + 7) & ~(7UL));
return ptr;
}
#define cnnic_free_aligned_dma(pci_dev, ptr, size, orig_ptr, dma_addr) \
free_pages(orig_ptr, get_order(size))
static inline void
sleep_cond(wait_queue_head_t *wait_queue, int *condition)
{
wait_queue_t we;
init_waitqueue_entry(&we, current);
add_wait_queue(wait_queue, &we);
while (!(ACCESS_ONCE(*condition))) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current))
goto out;
schedule();
}
out:
set_current_state(TASK_RUNNING);
remove_wait_queue(wait_queue, &we);
}
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static inline void
sleep_atomic_cond(wait_queue_head_t *waitq, atomic_t *pcond)
{
wait_queue_t we;
init_waitqueue_entry(&we, current);
add_wait_queue(waitq, &we);
while (!atomic_read(pcond)) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current))
goto out;
schedule();
}
out:
set_current_state(TASK_RUNNING);
remove_wait_queue(waitq, &we);
}
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/* Gives up the CPU for a timeout period.
* Check that the condition is not true before we go to sleep for a
* timeout period.
*/
static inline void
sleep_timeout_cond(wait_queue_head_t *wait_queue,
int *condition,
int timeout)
{
wait_queue_t we;
init_waitqueue_entry(&we, current);
add_wait_queue(wait_queue, &we);
set_current_state(TASK_INTERRUPTIBLE);
if (!(*condition))
schedule_timeout(timeout);
set_current_state(TASK_RUNNING);
remove_wait_queue(wait_queue, &we);
}
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#ifndef ROUNDUP4
#define ROUNDUP4(val) (((val) + 3) & 0xfffffffc)
#endif
#ifndef ROUNDUP8
#define ROUNDUP8(val) (((val) + 7) & 0xfffffff8)
#endif
#ifndef ROUNDUP16
#define ROUNDUP16(val) (((val) + 15) & 0xfffffff0)
#endif
#ifndef ROUNDUP128
#define ROUNDUP128(val) (((val) + 127) & 0xffffff80)
#endif
#endif /* _OCTEON_MAIN_H_ */
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