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octeon_fpavar.h revision 1.1 
      1 /*	$NetBSD: octeon_fpavar.h,v 1.1 2015/04/29 08:32:01 hikaru Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2007 Internet Initiative Japan, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _OCTEON_FPAVAR_H_
     30 #define _OCTEON_FPAVAR_H_
     31 
     32 struct octeon_fpa_buf {
     33 	int		fb_poolno;	/* pool # */
     34 
     35 	size_t		fb_size;	/* element size */
     36 	size_t		fb_nelems;	/* # of elements */
     37 
     38 	paddr_t		fb_paddr;	/* physical address */
     39 	vaddr_t		fb_addr;	/* virtual address */
     40 	size_t		fb_len;		/* total length */
     41 
     42 	bus_dma_tag_t	fb_dmat;
     43 	bus_dmamap_t	fb_dmah;
     44 	bus_dma_segment_t
     45 			*fb_dma_segs;
     46 	int		fb_dma_nsegs;
     47 };
     48 
     49 uint64_t	octeon_fpa_int_summary(void);
     50 int		octeon_fpa_buf_init(int, size_t, size_t, struct octeon_fpa_buf **);
     51 void		*octeon_fpa_buf_get(struct octeon_fpa_buf *);
     52 uint64_t	octeon_fpa_query(int);
     53 int		octeon_fpa_available_fpa_pool(int *available, int pool_no);
     54 
     55 #ifdef OCTEON_ETH_DEBUG
     56 void	octeon_fpa_dump(void);
     57 #endif
     58 
     59 #define OCTEON_CACHE_LINE_SIZE (128)
     60 
     61 /* Pool sizes in bytes, must be multiple of a cache line */
     62 #define FPA_POOL_0_SIZE (16 * OCTEON_CACHE_LINE_SIZE)
     63 #define FPA_POOL_1_SIZE (1 * OCTEON_CACHE_LINE_SIZE)
     64 #define FPA_POOL_2_SIZE (8 * OCTEON_CACHE_LINE_SIZE)
     65 #define FPA_POOL_3_SIZE (4 * OCTEON_CACHE_LINE_SIZE)
     66 
     67 #define FPA_POOL_4_SIZE (16 * OCTEON_CACHE_LINE_SIZE)
     68 #define FPA_POOL_5_SIZE (16 * OCTEON_CACHE_LINE_SIZE)
     69 #define FPA_POOL_6_SIZE (16 * OCTEON_CACHE_LINE_SIZE)
     70 #define FPA_POOL_7_SIZE (16 * OCTEON_CACHE_LINE_SIZE)
     71 
     72 /* Pools in use */
     73 #define FPA_RECV_PKT_POOL		(0)	/* Recieve Packet buffers */
     74 #define FPA_RECV_PKT_POOL_SIZE		FPA_POOL_0_SIZE
     75 #define FPA_RECV_PKT_POOL_LINE		16
     76 #define FPA_WQE_POOL			(1)	/* Work queue entrys */
     77 #define FPA_WQE_POOL_SIZE		FPA_POOL_1_SIZE
     78 #define FPA_WQE_POOL_LINE		1
     79 #define FPA_COMMAND_BUFFER_POOL		(2)	/* PKO queue command buffers */
     80 #define FPA_COMMAND_BUFFER_POOL_SIZE	FPA_POOL_2_SIZE
     81 #define FPA_COMMAND_BUFFER_POOL_LINE	8
     82 #define FPA_GATHER_BUFFER_POOL		(3)	/* PKO gather list buffers */
     83 #define FPA_GATHER_BUFFER_POOL_SIZE	FPA_POOL_3_SIZE
     84 #define FPA_GATHER_BUFFER_POOL_LINE	4
     85 
     86 #ifndef FPA_OUTPUT_BUFFER_POOL
     87 #define FPA_OUTPUT_BUFFER_POOL		FPA_COMMAND_BUFFER_POOL
     88 #define FPA_OUTPUT_BUFFER_POOL_SIZE	FPA_COMMAND_BUFFER_POOL_SIZE
     89 #endif
     90 
     91 /*
     92  * operations
     93  */
     94 
     95 static inline uint64_t
     96 octeon_fpa_load(uint64_t fpapool)
     97 {
     98 	uint64_t addr;
     99 
    100 	addr =
    101 	    (0x1ULL << 48) |
    102 	    (0x5ULL << 43) |
    103 	    (fpapool & 0x07ULL) << 40;
    104 
    105 	return octeon_read_csr(addr);
    106 }
    107 
    108 #ifdef notyet
    109 static inline uint64_t
    110 octeon_fpa_iobdma(struct octeon_fpa_softc *sc, int srcaddr, int len)
    111 {
    112 	/* XXX */
    113 	return 0ULL;
    114 }
    115 #endif
    116 
    117 static inline void
    118 octeon_fpa_store(uint64_t addr, uint64_t fpapool, uint64_t dwbcount)
    119 {
    120 	uint64_t ptr;
    121 
    122 	ptr =
    123 	    (0x1ULL << 48) |
    124 	    (0x5ULL << 43) |
    125 	    (fpapool & 0x07ULL) << 40 |
    126 	    (addr & 0xffffffffffULL);
    127 
    128 	OCTEON_SYNCWS;
    129 	octeon_write_csr(ptr, (dwbcount & 0x0ffULL));
    130 }
    131 
    132 static inline paddr_t
    133 octeon_fpa_buf_get_paddr(struct octeon_fpa_buf *fb)
    134 {
    135 	return octeon_fpa_load(fb->fb_poolno);
    136 }
    137 
    138 static inline void
    139 octeon_fpa_buf_put_paddr(struct octeon_fpa_buf *fb, paddr_t paddr)
    140 {
    141 	KASSERT(paddr >= fb->fb_paddr);
    142 	KASSERT(paddr < fb->fb_paddr + fb->fb_len);
    143 	octeon_fpa_store(paddr, fb->fb_poolno, fb->fb_size / 128);
    144 }
    145 
    146 static inline void
    147 octeon_fpa_buf_put(struct octeon_fpa_buf *fb, void *addr)
    148 {
    149 	paddr_t paddr;
    150 
    151 	KASSERT((vaddr_t)addr >= fb->fb_addr);
    152 	KASSERT((vaddr_t)addr < fb->fb_addr + fb->fb_len);
    153 	paddr = fb->fb_paddr + (paddr_t/* XXX */)((vaddr_t)addr - fb->fb_addr);
    154 	octeon_fpa_buf_put_paddr(fb, paddr);
    155 }
    156 
    157 #endif
    158