Date: Mon, 13 Sep 2010 13:11:50 +0000 (UTC) From: "Jayachandran C." <jchandra@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r212553 - in head/sys/mips/rmi: . dev/nlge dev/xlr Message-ID: <201009131311.o8DDBo3u002099@svn.freebsd.org>
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Author: jchandra Date: Mon Sep 13 13:11:50 2010 New Revision: 212553 URL: http://svn.freebsd.org/changeset/base/212553 Log: sys/mips/rmi/msgring.h - fixes and clean up. - Remove sync from msgrng_send, sync needs to be called just once before sending. - Fix retry logic - don't reload registers when retrying in message_send, also fix check for send pending fail. - remove unused message_send_block_fast() - merge message_receive_fast() to message_receive - style(9) fixes, and comments - rge and nlge updated for the sys/mips/rmi/msgring.h changes Modified: head/sys/mips/rmi/dev/nlge/if_nlge.c head/sys/mips/rmi/dev/xlr/rge.c head/sys/mips/rmi/msgring.h Modified: head/sys/mips/rmi/dev/nlge/if_nlge.c ============================================================================== --- head/sys/mips/rmi/dev/nlge/if_nlge.c Mon Sep 13 11:58:42 2010 (r212552) +++ head/sys/mips/rmi/dev/nlge/if_nlge.c Mon Sep 13 13:11:50 2010 (r212553) @@ -1035,7 +1035,7 @@ nlna_submit_rx_free_desc(struct nlna_sof n = 0; do { msgrng_flags = msgrng_access_enable(); - ret = message_send_retry(1, code, stid, &msg); + ret = message_send(1, code, stid, &msg); msgrng_restore(msgrng_flags); KASSERT(n++ < 100000, ("Too many credit fails\n")); } while (ret != 0); @@ -1960,7 +1960,7 @@ send_fmn_msg_tx(struct nlge_softc *sc, s do { msgrng_flags = msgrng_access_enable(); - ret = message_send_retry(n_entries, MSGRNG_CODE_MAC, + ret = message_send(n_entries, MSGRNG_CODE_MAC, sc->tx_bucket_id, msg); msgrng_restore(msgrng_flags); KASSERT(i++ < 100000, ("Too many credit fails\n")); Modified: head/sys/mips/rmi/dev/xlr/rge.c ============================================================================== --- head/sys/mips/rmi/dev/xlr/rge.c Mon Sep 13 11:58:42 2010 (r212552) +++ head/sys/mips/rmi/dev/xlr/rge.c Mon Sep 13 13:11:50 2010 (r212553) @@ -731,7 +731,7 @@ xlr_mac_send_fr(struct driver_data *priv do { msgrng_flags = msgrng_access_enable(); - ret = message_send_retry(1, code, stid, &msg); + ret = message_send(1, code, stid, &msg); msgrng_restore(msgrng_flags); KASSERT(i++ < 100000, ("Too many credit fails\n")); } while (ret != 0); @@ -1468,7 +1468,7 @@ mac_xmit(struct mbuf *m, struct rge_soft else { mflags = msgrng_access_enable(); - if ((rv = message_send_retry(1, MSGRNG_CODE_MAC, stid, &msg)) != 0) { + if ((rv = message_send(1, MSGRNG_CODE_MAC, stid, &msg)) != 0) { msg_snd_failed++; msgrng_restore(mflags); release_tx_desc(&msg, 0); Modified: head/sys/mips/rmi/msgring.h ============================================================================== --- head/sys/mips/rmi/msgring.h Mon Sep 13 11:58:42 2010 (r212552) +++ head/sys/mips/rmi/msgring.h Mon Sep 13 13:11:50 2010 (r212553) @@ -46,16 +46,16 @@ #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_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 @@ -64,173 +64,170 @@ #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(value) write_c2_register32(MSGRNG_MSG_CONFIG_REG, 0, value) - -#define msgrng_read_bucksize(bucket) read_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, bucket) -#define msgrng_write_bucksize(bucket, value) write_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, bucket, value) - -#define msgrng_read_cc(reg, pri) read_c2_register32(reg, pri) -#define msgrng_write_cc(reg, value, pri) write_c2_register32(reg, pri, value) - -#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(value) write_c2_register64(MSGRNG_TX_BUF_REG, 0, value) -#define msgrng_load_tx_msg1(value) write_c2_register64(MSGRNG_TX_BUF_REG, 1, value) -#define msgrng_load_tx_msg2(value) write_c2_register64(MSGRNG_TX_BUF_REG, 2, value) -#define msgrng_load_tx_msg3(value) write_c2_register64(MSGRNG_TX_BUF_REG, 3, value) +#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 +static __inline void msgrng_send(unsigned int stid) { __asm__ volatile ( - ".set push\n" - ".set noreorder\n" - "sync\n" - // "msgsnd %0\n" - "move $8, %0\n" - "c2 0x80001\n" - ".set pop\n" - :: "r" (stid):"$8" + ".set push\n" + ".set noreorder\n" + "move $8, %0\n" + "c2 0x80001\n" /* msgsnd $8 */ + ".set pop\n" + :: "r" (stid): "$8" ); } -static inline void +static __inline void msgrng_receive(unsigned int pri) { __asm__ volatile ( - ".set push\n" - ".set noreorder\n" - // "msgld %0\n" - "move $8, %0\n" - "c2 0x80002\n" - ".set pop\n" - :: "r" (pri):"$8" + ".set push\n" + ".set noreorder\n" + "move $8, %0\n" + "c2 0x80002\n" /* msgld $8 */ + ".set pop\n" + :: "r" (pri): "$8" ); } -static inline void + +static __inline void msgrng_wait(unsigned int mask) { __asm__ volatile ( - ".set push\n" - ".set noreorder\n" - // "msgwait %0\n" - "move $8, %0\n" - "c2 0x80003\n" - ".set pop\n" - :: "r" (mask):"$8" + ".set push\n" + ".set noreorder\n" + "move $8, %0\n" + "c2 0x80003\n" /* msgwait $8 */ + ".set pop\n" + :: "r" (mask): "$8" ); } @@ -251,111 +248,77 @@ msgrng_restore(uint32_t sr) } struct msgrng_msg { - __uint64_t msg0; - __uint64_t msg1; - __uint64_t msg2; - __uint64_t msg3; + uint64_t msg0; + uint64_t msg1; + uint64_t msg2; + uint64_t msg3; }; -static inline void -message_send_block_fast(int size, unsigned int code, unsigned int stid, - unsigned long long msg0, unsigned long long msg1, - unsigned long long msg2, unsigned long long msg3) -{ - __asm__ __volatile__(".set push\n" - ".set noreorder\n" - ".set mips64\n" - "dmtc2 %1, $0, 0\n" - "dmtc2 %2, $0, 1\n" - "dmtc2 %3, $0, 2\n" - "dmtc2 %4, $0, 3\n" - "move $8, %0\n" - "1: c2 0x80001\n" - "mfc2 $8, $2\n" - "andi $8, $8, 0x6\n" - "bnez $8, 1b\n" - "move $8, %0\n" - ".set pop\n" - : - : "r"(((size - 1) << 16) | (code << 8) | stid), "r"(msg0), "r"(msg1), "r"(msg2), "r"(msg3) - : "$8" - ); -} - -#define message_receive_fast(bucket, size, code, stid, msg0, msg1, msg2, msg3) \ - ( { unsigned int _status=0, _tmp=0; \ - msgrng_receive(bucket); \ - while ( (_status=msgrng_read_status()) & 0x08) ; \ - _tmp = _status & 0x30; \ - if (__builtin_expect((!_tmp), 1)) { \ - (size)=((_status & 0xc0)>>6)+1; \ - (code)=(_status & 0xff00)>>8; \ - (stid)=(_status & 0x7f0000)>>16; \ - (msg0)=msgrng_load_rx_msg0(); \ - (msg1)=msgrng_load_rx_msg1(); \ - (msg2)=msgrng_load_rx_msg2(); \ - (msg3)=msgrng_load_rx_msg3(); \ - _tmp=0; \ - } \ - _tmp; \ - } ) - -static __inline int +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; -#ifdef INVARIANTS int i = 0; -#endif + /* + * 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); - msgrng_send(dest); - - /* Wait for the thread pending to clear */ - do { - status = msgrng_read_status(); - KASSERT(i++ < 10000, ("Too many fails\n")); - } while ((status & 0x2) != 0); - - /* If there is a credit failure, return error */ - return status & 0x06; -} - -static __inline int -message_send_retry(unsigned int size, unsigned int code, - unsigned int stid, struct msgrng_msg *msg) -{ - int i, ret; + dest = ((size - 1) << 16) | (code << 8) | stid; /* - * we are in with interrupt disabled, retrying too many - * times is not good + * 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 < 16; i++) { - ret = message_send(size, code, stid, msg); - if (ret == 0) + 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); } - return (1); + /* If there is a credit failure, return error */ + return (status & 0x06); } -static __inline__ int -message_receive(int pri, int *size, int *code, int *src_id, +static __inline int +message_receive(int bucket, int *size, int *code, int *stid, struct msgrng_msg *msg) { - int res; + uint32_t status = 0, tmp = 0; - res = message_receive_fast(pri, *size, *code, *src_id, - msg->msg0, msg->msg1, msg->msg2, msg->msg3); - return res; + 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
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