309 lines
8.1 KiB
C
309 lines
8.1 KiB
C
|
/***********************license start***************
|
||
|
|
* Author: Cavium Networks
|
||
|
|
*
|
||
|
|
* Contact: support@caviumnetworks.com
|
||
|
|
* This file is part of the OCTEON SDK
|
||
|
|
*
|
||
|
|
* Copyright (c) 2003-2008 Cavium Networks
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this file; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
* or visit http://www.gnu.org/licenses/.
|
||
|
|
*
|
||
|
|
* This file may also be available under a different license from Cavium.
|
||
|
|
* Contact Cavium Networks for more information
|
||
|
|
***********************license end**************************************/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
*
|
||
|
|
* Interface to the hardware Free Pool Allocator.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __CVMX_FPA_H__
|
||
|
|
#define __CVMX_FPA_H__
|
||
|
|
|
||
|
|
#include <linux/delay.h>
|
||
|
|
|
||
|
|
#include <asm/octeon/cvmx-address.h>
|
||
|
|
#include <asm/octeon/cvmx-fpa-defs.h>
|
||
|
|
|
||
|
|
#define CVMX_FPA_NUM_POOLS 8
|
||
|
|
#define CVMX_FPA_MIN_BLOCK_SIZE 128
|
||
|
|
#define CVMX_FPA_ALIGNMENT 128
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Structure describing the data format used for stores to the FPA.
|
||
|
|
*/
|
||
|
|
typedef union {
|
||
|
|
uint64_t u64;
|
||
|
|
struct {
|
||
|
|
#ifdef __BIG_ENDIAN_BITFIELD
|
||
|
|
/*
|
||
|
|
* the (64-bit word) location in scratchpad to write
|
||
|
|
* to (if len != 0)
|
||
|
|
*/
|
||
|
|
uint64_t scraddr:8;
|
||
|
|
/* the number of words in the response (0 => no response) */
|
||
|
|
uint64_t len:8;
|
||
|
|
/* the ID of the device on the non-coherent bus */
|
||
|
|
uint64_t did:8;
|
||
|
|
/*
|
||
|
|
* the address that will appear in the first tick on
|
||
|
|
* the NCB bus.
|
||
|
|
*/
|
||
|
|
uint64_t addr:40;
|
||
|
|
#else
|
||
|
|
uint64_t addr:40;
|
||
|
|
uint64_t did:8;
|
||
|
|
uint64_t len:8;
|
||
|
|
uint64_t scraddr:8;
|
||
|
|
#endif
|
||
|
|
} s;
|
||
|
|
} cvmx_fpa_iobdma_data_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Structure describing the current state of a FPA pool.
|
||
|
|
*/
|
||
|
|
typedef struct {
|
||
|
|
/* Name it was created under */
|
||
|
|
const char *name;
|
||
|
|
/* Size of each block */
|
||
|
|
uint64_t size;
|
||
|
|
/* The base memory address of whole block */
|
||
|
|
void *base;
|
||
|
|
/* The number of elements in the pool at creation */
|
||
|
|
uint64_t starting_element_count;
|
||
|
|
} cvmx_fpa_pool_info_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Current state of all the pools. Use access functions
|
||
|
|
* instead of using it directly.
|
||
|
|
*/
|
||
|
|
extern cvmx_fpa_pool_info_t cvmx_fpa_pool_info[CVMX_FPA_NUM_POOLS];
|
||
|
|
|
||
|
|
/* CSR typedefs have been moved to cvmx-csr-*.h */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the name of the pool
|
||
|
|
*
|
||
|
|
* @pool: Pool to get the name of
|
||
|
|
* Returns The name
|
||
|
|
*/
|
||
|
|
static inline const char *cvmx_fpa_get_name(uint64_t pool)
|
||
|
|
{
|
||
|
|
return cvmx_fpa_pool_info[pool].name;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the base of the pool
|
||
|
|
*
|
||
|
|
* @pool: Pool to get the base of
|
||
|
|
* Returns The base
|
||
|
|
*/
|
||
|
|
static inline void *cvmx_fpa_get_base(uint64_t pool)
|
||
|
|
{
|
||
|
|
return cvmx_fpa_pool_info[pool].base;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if a pointer belongs to an FPA pool. Return non-zero
|
||
|
|
* if the supplied pointer is inside the memory controlled by
|
||
|
|
* an FPA pool.
|
||
|
|
*
|
||
|
|
* @pool: Pool to check
|
||
|
|
* @ptr: Pointer to check
|
||
|
|
* Returns Non-zero if pointer is in the pool. Zero if not
|
||
|
|
*/
|
||
|
|
static inline int cvmx_fpa_is_member(uint64_t pool, void *ptr)
|
||
|
|
{
|
||
|
|
return ((ptr >= cvmx_fpa_pool_info[pool].base) &&
|
||
|
|
((char *)ptr <
|
||
|
|
((char *)(cvmx_fpa_pool_info[pool].base)) +
|
||
|
|
cvmx_fpa_pool_info[pool].size *
|
||
|
|
cvmx_fpa_pool_info[pool].starting_element_count));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Enable the FPA for use. Must be performed after any CSR
|
||
|
|
* configuration but before any other FPA functions.
|
||
|
|
*/
|
||
|
|
static inline void cvmx_fpa_enable(void)
|
||
|
|
{
|
||
|
|
union cvmx_fpa_ctl_status status;
|
||
|
|
|
||
|
|
status.u64 = cvmx_read_csr(CVMX_FPA_CTL_STATUS);
|
||
|
|
if (status.s.enb) {
|
||
|
|
cvmx_dprintf
|
||
|
|
("Warning: Enabling FPA when FPA already enabled.\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Do runtime check as we allow pass1 compiled code to run on
|
||
|
|
* pass2 chips.
|
||
|
|
*/
|
||
|
|
if (cvmx_octeon_is_pass1()) {
|
||
|
|
union cvmx_fpa_fpfx_marks marks;
|
||
|
|
int i;
|
||
|
|
for (i = 1; i < 8; i++) {
|
||
|
|
marks.u64 =
|
||
|
|
cvmx_read_csr(CVMX_FPA_FPF1_MARKS + (i - 1) * 8ull);
|
||
|
|
marks.s.fpf_wr = 0xe0;
|
||
|
|
cvmx_write_csr(CVMX_FPA_FPF1_MARKS + (i - 1) * 8ull,
|
||
|
|
marks.u64);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Enforce a 10 cycle delay between config and enable */
|
||
|
|
__delay(10);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* FIXME: CVMX_FPA_CTL_STATUS read is unmodelled */
|
||
|
|
status.u64 = 0;
|
||
|
|
status.s.enb = 1;
|
||
|
|
cvmx_write_csr(CVMX_FPA_CTL_STATUS, status.u64);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a new block from the FPA
|
||
|
|
*
|
||
|
|
* @pool: Pool to get the block from
|
||
|
|
* Returns Pointer to the block or NULL on failure
|
||
|
|
*/
|
||
|
|
static inline void *cvmx_fpa_alloc(uint64_t pool)
|
||
|
|
{
|
||
|
|
uint64_t address =
|
||
|
|
cvmx_read_csr(CVMX_ADDR_DID(CVMX_FULL_DID(CVMX_OCT_DID_FPA, pool)));
|
||
|
|
if (address)
|
||
|
|
return cvmx_phys_to_ptr(address);
|
||
|
|
else
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Asynchronously get a new block from the FPA
|
||
|
|
*
|
||
|
|
* @scr_addr: Local scratch address to put response in. This is a byte address,
|
||
|
|
* but must be 8 byte aligned.
|
||
|
|
* @pool: Pool to get the block from
|
||
|
|
*/
|
||
|
|
static inline void cvmx_fpa_async_alloc(uint64_t scr_addr, uint64_t pool)
|
||
|
|
{
|
||
|
|
cvmx_fpa_iobdma_data_t data;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Hardware only uses 64 bit aligned locations, so convert
|
||
|
|
* from byte address to 64-bit index
|
||
|
|
*/
|
||
|
|
data.s.scraddr = scr_addr >> 3;
|
||
|
|
data.s.len = 1;
|
||
|
|
data.s.did = CVMX_FULL_DID(CVMX_OCT_DID_FPA, pool);
|
||
|
|
data.s.addr = 0;
|
||
|
|
cvmx_send_single(data.u64);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Free a block allocated with a FPA pool. Does NOT provide memory
|
||
|
|
* ordering in cases where the memory block was modified by the core.
|
||
|
|
*
|
||
|
|
* @ptr: Block to free
|
||
|
|
* @pool: Pool to put it in
|
||
|
|
* @num_cache_lines:
|
||
|
|
* Cache lines to invalidate
|
||
|
|
*/
|
||
|
|
static inline void cvmx_fpa_free_nosync(void *ptr, uint64_t pool,
|
||
|
|
uint64_t num_cache_lines)
|
||
|
|
{
|
||
|
|
cvmx_addr_t newptr;
|
||
|
|
newptr.u64 = cvmx_ptr_to_phys(ptr);
|
||
|
|
newptr.sfilldidspace.didspace =
|
||
|
|
CVMX_ADDR_DIDSPACE(CVMX_FULL_DID(CVMX_OCT_DID_FPA, pool));
|
||
|
|
/* Prevent GCC from reordering around free */
|
||
|
|
barrier();
|
||
|
|
/* value written is number of cache lines not written back */
|
||
|
|
cvmx_write_io(newptr.u64, num_cache_lines);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Free a block allocated with a FPA pool. Provides required memory
|
||
|
|
* ordering in cases where memory block was modified by core.
|
||
|
|
*
|
||
|
|
* @ptr: Block to free
|
||
|
|
* @pool: Pool to put it in
|
||
|
|
* @num_cache_lines:
|
||
|
|
* Cache lines to invalidate
|
||
|
|
*/
|
||
|
|
static inline void cvmx_fpa_free(void *ptr, uint64_t pool,
|
||
|
|
uint64_t num_cache_lines)
|
||
|
|
{
|
||
|
|
cvmx_addr_t newptr;
|
||
|
|
newptr.u64 = cvmx_ptr_to_phys(ptr);
|
||
|
|
newptr.sfilldidspace.didspace =
|
||
|
|
CVMX_ADDR_DIDSPACE(CVMX_FULL_DID(CVMX_OCT_DID_FPA, pool));
|
||
|
|
/*
|
||
|
|
* Make sure that any previous writes to memory go out before
|
||
|
|
* we free this buffer. This also serves as a barrier to
|
||
|
|
* prevent GCC from reordering operations to after the
|
||
|
|
* free.
|
||
|
|
*/
|
||
|
|
CVMX_SYNCWS;
|
||
|
|
/* value written is number of cache lines not written back */
|
||
|
|
cvmx_write_io(newptr.u64, num_cache_lines);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Setup a FPA pool to control a new block of memory.
|
||
|
|
* This can only be called once per pool. Make sure proper
|
||
|
|
* locking enforces this.
|
||
|
|
*
|
||
|
|
* @pool: Pool to initialize
|
||
|
|
* 0 <= pool < 8
|
||
|
|
* @name: Constant character string to name this pool.
|
||
|
|
* String is not copied.
|
||
|
|
* @buffer: Pointer to the block of memory to use. This must be
|
||
|
|
* accessible by all processors and external hardware.
|
||
|
|
* @block_size: Size for each block controlled by the FPA
|
||
|
|
* @num_blocks: Number of blocks
|
||
|
|
*
|
||
|
|
* Returns 0 on Success,
|
||
|
|
* -1 on failure
|
||
|
|
*/
|
||
|
|
extern int cvmx_fpa_setup_pool(uint64_t pool, const char *name, void *buffer,
|
||
|
|
uint64_t block_size, uint64_t num_blocks);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Shutdown a Memory pool and validate that it had all of
|
||
|
|
* the buffers originally placed in it. This should only be
|
||
|
|
* called by one processor after all hardware has finished
|
||
|
|
* using the pool.
|
||
|
|
*
|
||
|
|
* @pool: Pool to shutdown
|
||
|
|
* Returns Zero on success
|
||
|
|
* - Positive is count of missing buffers
|
||
|
|
* - Negative is too many buffers or corrupted pointers
|
||
|
|
*/
|
||
|
|
extern uint64_t cvmx_fpa_shutdown_pool(uint64_t pool);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the size of blocks controlled by the pool
|
||
|
|
* This is resolved to a constant at compile time.
|
||
|
|
*
|
||
|
|
* @pool: Pool to access
|
||
|
|
* Returns Size of the block in bytes
|
||
|
|
*/
|
||
|
|
uint64_t cvmx_fpa_get_block_size(uint64_t pool);
|
||
|
|
|
||
|
|
#endif /* __CVM_FPA_H__ */
|