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freebsd/sys/mips/rmi/msgring.h
Jayachandran C. b0a36f6a91 Update message ring handling code for XLR/XLS 
- Wakeup multiple threads per core using message ring watermark interrupts.
- Update message ring handler registration, use the real device station id
  for registering interrupts.
- rge/nlge: update for the new message ring registration code.
- rge/nlge: use 2 message ring stations for incoming packets, this will
  allow more messages to be queued.
- nlge: comment fixes, remove unused variable
- style and whitespace fixes
2010-10-03 04:33:58 +00:00

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/*-
* Copyright (c) 2003-2009 RMI 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 RMI 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 AUTHOR 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 AUTHOR 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.
*
* RMI_BSD
* $FreeBSD$
*/
#ifndef _RMI_MSGRING_H_
#define _RMI_MSGRING_H_
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <machine/cpuregs.h>
#include <machine/cpufunc.h>
#include <mips/rmi/rmi_mips_exts.h>
#define MSGRNG_TX_BUF_REG 0
#define MSGRNG_RX_BUF_REG 1
#define MSGRNG_MSG_STATUS_REG 2
#define MSGRNG_MSG_CONFIG_REG 3
#define MSGRNG_MSG_BUCKSIZE_REG 4
#define MSGRNG_CC_0_REG 16
#define MSGRNG_CC_1_REG 17
#define MSGRNG_CC_2_REG 18
#define MSGRNG_CC_3_REG 19
#define MSGRNG_CC_4_REG 20
#define MSGRNG_CC_5_REG 21
#define MSGRNG_CC_6_REG 22
#define MSGRNG_CC_7_REG 23
#define MSGRNG_CC_8_REG 24
#define MSGRNG_CC_9_REG 25
#define MSGRNG_CC_10_REG 26
#define MSGRNG_CC_11_REG 27
#define MSGRNG_CC_12_REG 28
#define MSGRNG_CC_13_REG 29
#define MSGRNG_CC_14_REG 30
#define MSGRNG_CC_15_REG 31
/* Station IDs */
#define MSGRNG_STNID_CPU0 0x00
#define MSGRNG_STNID_CPU1 0x08
#define MSGRNG_STNID_CPU2 0x10
#define MSGRNG_STNID_CPU3 0x18
#define MSGRNG_STNID_CPU4 0x20
#define MSGRNG_STNID_CPU5 0x28
#define MSGRNG_STNID_CPU6 0x30
#define MSGRNG_STNID_CPU7 0x38
#define MSGRNG_STNID_XGS0_TX 64
#define MSGRNG_STNID_XMAC0_00_TX 64
#define MSGRNG_STNID_XMAC0_01_TX 65
#define MSGRNG_STNID_XMAC0_02_TX 66
#define MSGRNG_STNID_XMAC0_03_TX 67
#define MSGRNG_STNID_XMAC0_04_TX 68
#define MSGRNG_STNID_XMAC0_05_TX 69
#define MSGRNG_STNID_XMAC0_06_TX 70
#define MSGRNG_STNID_XMAC0_07_TX 71
#define MSGRNG_STNID_XMAC0_08_TX 72
#define MSGRNG_STNID_XMAC0_09_TX 73
#define MSGRNG_STNID_XMAC0_10_TX 74
#define MSGRNG_STNID_XMAC0_11_TX 75
#define MSGRNG_STNID_XMAC0_12_TX 76
#define MSGRNG_STNID_XMAC0_13_TX 77
#define MSGRNG_STNID_XMAC0_14_TX 78
#define MSGRNG_STNID_XMAC0_15_TX 79
#define MSGRNG_STNID_XGS1_TX 80
#define MSGRNG_STNID_XMAC1_00_TX 80
#define MSGRNG_STNID_XMAC1_01_TX 81
#define MSGRNG_STNID_XMAC1_02_TX 82
#define MSGRNG_STNID_XMAC1_03_TX 83
#define MSGRNG_STNID_XMAC1_04_TX 84
#define MSGRNG_STNID_XMAC1_05_TX 85
#define MSGRNG_STNID_XMAC1_06_TX 86
#define MSGRNG_STNID_XMAC1_07_TX 87
#define MSGRNG_STNID_XMAC1_08_TX 88
#define MSGRNG_STNID_XMAC1_09_TX 89
#define MSGRNG_STNID_XMAC1_10_TX 90
#define MSGRNG_STNID_XMAC1_11_TX 91
#define MSGRNG_STNID_XMAC1_12_TX 92
#define MSGRNG_STNID_XMAC1_13_TX 93
#define MSGRNG_STNID_XMAC1_14_TX 94
#define MSGRNG_STNID_XMAC1_15_TX 95
#define MSGRNG_STNID_GMAC 96
#define MSGRNG_STNID_GMACJFR_0 96
#define MSGRNG_STNID_GMACRFR_0 97
#define MSGRNG_STNID_GMACTX0 98
#define MSGRNG_STNID_GMACTX1 99
#define MSGRNG_STNID_GMACTX2 100
#define MSGRNG_STNID_GMACTX3 101
#define MSGRNG_STNID_GMACJFR_1 102
#define MSGRNG_STNID_GMACRFR_1 103
#define MSGRNG_STNID_DMA 104
#define MSGRNG_STNID_DMA_0 104
#define MSGRNG_STNID_DMA_1 105
#define MSGRNG_STNID_DMA_2 106
#define MSGRNG_STNID_DMA_3 107
#define MSGRNG_STNID_XGS0FR 112
#define MSGRNG_STNID_XMAC0JFR 112
#define MSGRNG_STNID_XMAC0RFR 113
#define MSGRNG_STNID_XGS1FR 114
#define MSGRNG_STNID_XMAC1JFR 114
#define MSGRNG_STNID_XMAC1RFR 115
#define MSGRNG_STNID_SEC 120
#define MSGRNG_STNID_SEC0 120
#define MSGRNG_STNID_SEC1 121
#define MSGRNG_STNID_SEC2 122
#define MSGRNG_STNID_SEC3 123
#define MSGRNG_STNID_PK0 124
#define MSGRNG_STNID_SEC_RSA 124
#define MSGRNG_STNID_SEC_RSVD0 125
#define MSGRNG_STNID_SEC_RSVD1 126
#define MSGRNG_STNID_SEC_RSVD2 127
#define MSGRNG_STNID_GMAC1 80
#define MSGRNG_STNID_GMAC1_FR_0 81
#define MSGRNG_STNID_GMAC1_TX0 82
#define MSGRNG_STNID_GMAC1_TX1 83
#define MSGRNG_STNID_GMAC1_TX2 84
#define MSGRNG_STNID_GMAC1_TX3 85
#define MSGRNG_STNID_GMAC1_FR_1 87
#define MSGRNG_STNID_GMAC0 96
#define MSGRNG_STNID_GMAC0_FR_0 97
#define MSGRNG_STNID_GMAC0_TX0 98
#define MSGRNG_STNID_GMAC0_TX1 99
#define MSGRNG_STNID_GMAC0_TX2 100
#define MSGRNG_STNID_GMAC0_TX3 101
#define MSGRNG_STNID_GMAC0_FR_1 103
#define MSGRNG_STNID_CMP_0 108
#define MSGRNG_STNID_CMP_1 109
#define MSGRNG_STNID_CMP_2 110
#define MSGRNG_STNID_CMP_3 111
#define MSGRNG_STNID_PCIE_0 116
#define MSGRNG_STNID_PCIE_1 117
#define MSGRNG_STNID_PCIE_2 118
#define MSGRNG_STNID_PCIE_3 119
#define MSGRNG_STNID_XLS_PK0 121
#define MSGRNG_CODE_MAC 0
#define MSGRNG_CODE_XGMAC 2
#define MSGRNG_CODE_SEC 0
#define MSGRNG_CODE_BOOT_WAKEUP 200
#define MSGRNG_CODE_SPI4 3
#define msgrng_read_status() read_c2_register32(MSGRNG_MSG_STATUS_REG, 0)
#define msgrng_read_config() read_c2_register32(MSGRNG_MSG_CONFIG_REG, 0)
#define msgrng_write_config(v) write_c2_register32(MSGRNG_MSG_CONFIG_REG, 0, v)
#define msgrng_read_bucksize(b) read_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, b)
#define msgrng_write_bucksize(b, v) write_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, b, v)
#define msgrng_read_cc(r, s) read_c2_register32(r, s)
#define msgrng_write_cc(r, v, s) write_c2_register32(r, s, v)
#define msgrng_load_rx_msg0() read_c2_register64(MSGRNG_RX_BUF_REG, 0)
#define msgrng_load_rx_msg1() read_c2_register64(MSGRNG_RX_BUF_REG, 1)
#define msgrng_load_rx_msg2() read_c2_register64(MSGRNG_RX_BUF_REG, 2)
#define msgrng_load_rx_msg3() read_c2_register64(MSGRNG_RX_BUF_REG, 3)
#define msgrng_load_tx_msg0(v) write_c2_register64(MSGRNG_TX_BUF_REG, 0, v)
#define msgrng_load_tx_msg1(v) write_c2_register64(MSGRNG_TX_BUF_REG, 1, v)
#define msgrng_load_tx_msg2(v) write_c2_register64(MSGRNG_TX_BUF_REG, 2, v)
#define msgrng_load_tx_msg3(v) write_c2_register64(MSGRNG_TX_BUF_REG, 3, v)
static __inline void
msgrng_send(unsigned int stid)
{
__asm__ volatile (
".set push\n"
".set noreorder\n"
"move $8, %0\n"
"c2 0x80001\n" /* msgsnd $8 */
".set pop\n"
:: "r" (stid): "$8"
);
}
static __inline void
msgrng_receive(unsigned int pri)
{
__asm__ volatile (
".set push\n"
".set noreorder\n"
"move $8, %0\n"
"c2 0x80002\n" /* msgld $8 */
".set pop\n"
:: "r" (pri): "$8"
);
}
static __inline void
msgrng_wait(unsigned int mask)
{
__asm__ volatile (
".set push\n"
".set noreorder\n"
"move $8, %0\n"
"c2 0x80003\n" /* msgwait $8 */
".set pop\n"
:: "r" (mask): "$8"
);
}
static __inline uint32_t
msgrng_access_enable(void)
{
uint32_t sr = mips_rd_status();
mips_wr_status((sr & ~MIPS_SR_INT_IE) | MIPS_SR_COP_2_BIT);
return (sr);
}
static __inline void
msgrng_restore(uint32_t sr)
{
mips_wr_status(sr);
}
struct msgrng_msg {
uint64_t msg0;
uint64_t msg1;
uint64_t msg2;
uint64_t msg3;
};
static __inline int
message_send(unsigned int size, unsigned int code,
unsigned int stid, struct msgrng_msg *msg)
{
unsigned int dest = 0;
unsigned long long status = 0;
int i = 0;
/*
* Make sure that all the writes pending at the cpu are flushed.
* Any writes pending on CPU will not be see by devices. L1/L2
* caches are coherent with IO, so no cache flush needed.
*/
__asm __volatile ("sync");
/* Load TX message buffers */
msgrng_load_tx_msg0(msg->msg0);
msgrng_load_tx_msg1(msg->msg1);
msgrng_load_tx_msg2(msg->msg2);
msgrng_load_tx_msg3(msg->msg3);
dest = ((size - 1) << 16) | (code << 8) | stid;
/*
* Retry a few times on credit fail, this should be a
* transient condition, unless there is a configuration
* failure, or the receiver is stuck.
*/
for (i = 0; i < 8; i++) {
msgrng_send(dest);
status = msgrng_read_status();
KASSERT((status & 0x2) == 0, ("Send pending fail!"));
if ((status & 0x4) == 0)
return (0);
}
/* If there is a credit failure, return error */
return (status & 0x06);
}
static __inline int
message_receive(int bucket, int *size, int *code, int *stid,
struct msgrng_msg *msg)
{
uint32_t status = 0, tmp = 0;
msgrng_receive(bucket);
/* wait for load pending to clear */
do {
status = msgrng_read_status();
} while ((status & 0x08) != 0);
/* receive error bits */
tmp = status & 0x30;
if (tmp != 0)
return (tmp);
*size = ((status & 0xc0) >> 6) + 1;
*code = (status & 0xff00) >> 8;
*stid = (status & 0x7f0000) >> 16;
msg->msg0 = msgrng_load_rx_msg0();
msg->msg1 = msgrng_load_rx_msg1();
msg->msg2 = msgrng_load_rx_msg2();
msg->msg3 = msgrng_load_rx_msg3();
return (0);
}
#define MSGRNG_STN_RX_QSIZE 256
#define MSGRNG_NSTATIONS 128
#define MSGRNG_CORE_NBUCKETS 8
struct stn_cc {
unsigned short counters[16][8];
};
struct bucket_size {
unsigned short bucket[MSGRNG_NSTATIONS];
};
extern struct bucket_size bucket_sizes;
extern struct stn_cc cc_table_cpu_0;
extern struct stn_cc cc_table_cpu_1;
extern struct stn_cc cc_table_cpu_2;
extern struct stn_cc cc_table_cpu_3;
extern struct stn_cc cc_table_cpu_4;
extern struct stn_cc cc_table_cpu_5;
extern struct stn_cc cc_table_cpu_6;
extern struct stn_cc cc_table_cpu_7;
extern struct stn_cc cc_table_xgs_0;
extern struct stn_cc cc_table_xgs_1;
extern struct stn_cc cc_table_gmac;
extern struct stn_cc cc_table_dma;
extern struct stn_cc cc_table_sec;
extern struct bucket_size xls_bucket_sizes;
extern struct stn_cc xls_cc_table_cpu_0;
extern struct stn_cc xls_cc_table_cpu_1;
extern struct stn_cc xls_cc_table_cpu_2;
extern struct stn_cc xls_cc_table_cpu_3;
extern struct stn_cc xls_cc_table_gmac0;
extern struct stn_cc xls_cc_table_gmac1;
extern struct stn_cc xls_cc_table_cmp;
extern struct stn_cc xls_cc_table_pcie;
extern struct stn_cc xls_cc_table_dma;
extern struct stn_cc xls_cc_table_sec;
typedef void (*msgring_handler)(int, int, int, int, struct msgrng_msg *, void *);
int register_msgring_handler(int startb, int endb, msgring_handler action,
void *arg);
uint32_t xlr_msgring_handler(uint8_t bucket_mask, uint32_t max_messages);
void xlr_msgring_cpu_init(void);
void xlr_msgring_config(void);
#endif
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