mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-19 06:44:31 +00:00
Clean up fast message ring code for XLR.
Fix message ring send path: - define msgrng_access_enable() which disables local interrupts and enables message ring access. Also define msgrng_restore() which restores interrupts - remove all other msgrng enable/disable macros, no need of critical_enter and other locking here. - message_send() fixup: re-read status until pending bit clears - message_send_retry() fixup: retry only few times with interrupts disabled - Fix up message_send/message_send_retry callers - call msgrng_access_enable() and msgrng_restore() correctly so that interrupts are not disabled for long. - removed unused and obsolete code from sys/mips/rmi/msgring.h - some style fixes - more later rge.c (XLR GMAC driver): - updated for the message ring changes - remove unused message_send_block() - retry on credit failure, this is not a permanent failure when credits are configured correctly. Add panic if credits are not available to send for a long time.
This commit is contained in:
Jayachandran C.
parent
4c394c189f
commit
670a090971
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=212321
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@ -711,21 +711,27 @@ static __inline__ int
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xlr_mac_send_fr(struct driver_data *priv,
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vm_paddr_t addr, int len)
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{
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int stid = priv->rfrbucket;
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struct msgrng_msg msg;
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int vcpu = xlr_cpu_id();
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int stid = priv->rfrbucket;
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int i = 0, code, ret;
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uint32_t msgrng_flags;
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mac_make_desc_rfr(&msg, addr);
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/* Send the packet to MAC */
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dbg_msg("mac_%d: Sending free packet %lx to stid %d\n",
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priv->instance, (u_long)addr, stid);
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if (priv->type == XLR_XGMAC) {
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while (message_send(1, MSGRNG_CODE_XGMAC, stid, &msg));
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} else {
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while (message_send(1, MSGRNG_CODE_MAC, stid, &msg));
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xlr_rge_repl_done[vcpu]++;
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}
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if (priv->type == XLR_XGMAC)
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code = MSGRNG_CODE_XGMAC; /* WHY? */
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else
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code = MSGRNG_CODE_MAC;
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do {
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msgrng_flags = msgrng_access_enable();
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ret = message_send_retry(1, code, stid, &msg);
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msgrng_restore(msgrng_flags);
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KASSERT(i++ < 100000, ("Too many credit fails\n"));
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} while (ret != 0);
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return 0;
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}
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@ -1439,37 +1445,16 @@ rmi_xlr_mac_set_duplex(struct driver_data *s,
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#define MAC_TX_PASS 0
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#define MAC_TX_RETRY 1
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static __inline__ void
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message_send_block(unsigned int size, unsigned int code,
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unsigned int stid, struct msgrng_msg *msg)
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{
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unsigned int dest = 0;
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unsigned long long status = 0;
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msgrng_load_tx_msg0(msg->msg0);
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msgrng_load_tx_msg1(msg->msg1);
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msgrng_load_tx_msg2(msg->msg2);
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msgrng_load_tx_msg3(msg->msg3);
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dest = ((size - 1) << 16) | (code << 8) | (stid);
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do {
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msgrng_send(dest);
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status = msgrng_read_status();
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} while (status & 0x6);
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}
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int xlr_dev_queue_xmit_hack = 0;
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static int
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mac_xmit(struct mbuf *m, struct rge_softc *sc,
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struct driver_data *priv, int len, struct p2d_tx_desc *tx_desc)
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{
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struct msgrng_msg msg;
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struct msgrng_msg msg = {0,0,0,0};
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int stid = priv->txbucket;
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uint32_t tx_cycles = 0;
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unsigned long mflags = 0;
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uint32_t mflags;
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int vcpu = xlr_cpu_id();
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int rv;
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@ -1479,17 +1464,17 @@ mac_xmit(struct mbuf *m, struct rge_softc *sc,
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return MAC_TX_FAIL;
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else {
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msgrng_access_enable(mflags);
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mflags = msgrng_access_enable();
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if ((rv = message_send_retry(1, MSGRNG_CODE_MAC, stid, &msg)) != 0) {
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msg_snd_failed++;
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msgrng_access_disable(mflags);
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msgrng_restore(mflags);
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release_tx_desc(&msg, 0);
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xlr_rge_msg_snd_failed[vcpu]++;
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dbg_msg("Failed packet to cpu %d, rv = %d, stid %d, msg0=%jx\n",
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vcpu, rv, stid, (uintmax_t)msg.msg0);
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return MAC_TX_FAIL;
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}
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msgrng_access_disable(mflags);
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msgrng_restore(mflags);
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port_inc_counter(priv->instance, PORT_TX);
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}
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@ -1559,7 +1544,6 @@ mac_frin_replenish(void *args /* ignored */ )
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for (i = 0; i < XLR_MAX_MACS; i++) {
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/* int offset = 0; */
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unsigned long msgrng_flags;
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void *m;
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uint32_t cycles;
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struct rge_softc *sc;
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@ -1592,14 +1576,11 @@ mac_frin_replenish(void *args /* ignored */ )
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}
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}
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xlr_inc_counter(REPLENISH_FRIN);
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msgrng_access_enable(msgrng_flags);
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if (xlr_mac_send_fr(priv, vtophys(m), MAX_FRAME_SIZE)) {
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free_buf(vtophys(m));
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printf("[%s]: rx free message_send failed!\n", __FUNCTION__);
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msgrng_access_disable(msgrng_flags);
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break;
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}
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msgrng_access_disable(msgrng_flags);
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xlr_set_counter(REPLENISH_CYCLES,
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(read_c0_count() - cycles));
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atomic_subtract_int((&priv->frin_to_be_sent[cpu]), 1);
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@ -2427,7 +2408,6 @@ static int
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rmi_xlr_mac_fill_rxfr(struct rge_softc *sc)
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{
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struct driver_data *priv = &(sc->priv);
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unsigned long msgrng_flags;
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int i;
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int ret = 0;
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void *ptr;
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@ -2445,9 +2425,7 @@ rmi_xlr_mac_fill_rxfr(struct rge_softc *sc)
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break;
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}
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/* Send the free Rx desc to the MAC */
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msgrng_access_enable(msgrng_flags);
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xlr_mac_send_fr(priv, vtophys(ptr), MAX_FRAME_SIZE);
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msgrng_access_disable(msgrng_flags);
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}
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return ret;
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@ -115,7 +115,7 @@ xlr_msgring_cpu_init(void)
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struct stn_cc *cc_config;
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struct bucket_size *bucket_sizes;
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int id;
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unsigned long flags;
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uint32_t flags;
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KASSERT(xlr_thr_id() == 0,
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("xlr_msgring_cpu_init from non-zero thread\n"));
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@ -125,13 +125,14 @@ xlr_msgring_cpu_init(void)
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bucket_sizes = xlr_board_info.bucket_sizes;
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cc_config = xlr_board_info.credit_configs[id];
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msgrng_flags_save(flags);
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/*
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* Message Stations are shared among all threads in a cpu core
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* Assume, thread 0 on all cores are always active when more than 1
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* thread is active in a core
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*/
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flags = msgrng_access_enable();
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msgrng_write_bucksize(0, bucket_sizes->bucket[id * 8 + 0]);
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msgrng_write_bucksize(1, bucket_sizes->bucket[id * 8 + 1]);
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msgrng_write_bucksize(2, bucket_sizes->bucket[id * 8 + 2]);
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@ -158,7 +159,7 @@ xlr_msgring_cpu_init(void)
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MSGRNG_CC_INIT_CPU_DEST(14, cc_config->counters);
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MSGRNG_CC_INIT_CPU_DEST(15, cc_config->counters);
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msgrng_flags_restore(flags);
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msgrng_restore(flags);
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}
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void
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@ -183,8 +184,7 @@ xlr_msgring_handler(struct trapframe *tf)
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unsigned int bucket_empty_bm = 0;
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unsigned int status = 0;
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/* TODO: not necessary to disable preemption */
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msgrng_flags_save(mflags);
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mflags = msgrng_access_enable();
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/* First Drain all the high priority messages */
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for (;;) {
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@ -210,39 +210,37 @@ xlr_msgring_handler(struct trapframe *tf)
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__FUNCTION__, tx_stid, bucket, size, (uintmax_t)msg.msg0);
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} else {
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//printf("[%s]: rx_stid = %d\n", __FUNCTION__, rx_stid);
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msgrng_flags_restore(mflags);
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msgrng_restore(mflags);
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(*tx_stn_handlers[tx_stid].action) (bucket, size, code, rx_stid,
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&msg, tx_stn_handlers[tx_stid].dev_id);
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msgrng_flags_save(mflags);
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mflags = msgrng_access_enable();
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}
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}
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}
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msgrng_flags_restore(mflags);
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msgrng_restore(mflags);
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}
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void
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enable_msgring_int(void *arg)
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{
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unsigned long mflags = 0;
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uint32_t config, mflags;
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msgrng_access_save(&msgrng_lock, mflags);
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/* enable the message ring interrupts */
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msgrng_write_config((msgring_watermark_count << 24) | (IRQ_MSGRING << 16)
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| (msgring_thread_mask << 8) | msgring_int_type);
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msgrng_access_restore(&msgrng_lock, mflags);
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config = (msgring_watermark_count << 24) | (IRQ_MSGRING << 16) |
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(msgring_thread_mask << 8) | msgring_int_type;
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mflags = msgrng_access_enable();
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msgrng_write_config(config);
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msgrng_restore(mflags);
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}
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void
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disable_msgring_int(void *arg)
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{
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unsigned long mflags = 0;
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uint32_t config;
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uint32_t config, mflags;
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msgrng_access_save(&msgrng_lock, mflags);
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config = msgrng_read_config();
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config &= ~0x3;
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mflags = msgrng_access_enable();
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config = msgrng_read_config() & ~0x3;
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msgrng_write_config(config);
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msgrng_access_restore(&msgrng_lock, mflags);
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msgrng_restore(mflags);
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}
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static int
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@ -32,54 +32,36 @@
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#ifndef _RMI_MSGRING_H_
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#define _RMI_MSGRING_H_
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <machine/cpuregs.h>
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#include <machine/cpufunc.h>
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#include <mips/rmi/rmi_mips_exts.h>
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#define MSGRNG_TX_BUF_REG 0
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#define MSGRNG_RX_BUF_REG 1
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#define MSGRNG_TX_BUF_REG 0
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#define MSGRNG_RX_BUF_REG 1
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#define MSGRNG_MSG_STATUS_REG 2
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#define MSGRNG_MSG_CONFIG_REG 3
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#define MSGRNG_MSG_BUCKSIZE_REG 4
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#define MSGRNG_MSG_STATUS_REG 2
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#define MSGRNG_MSG_CONFIG_REG 3
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#define MSGRNG_MSG_BUCKSIZE_REG 4
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#define MSGRNG_CC_0_REG 16
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#define MSGRNG_CC_1_REG 17
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#define MSGRNG_CC_2_REG 18
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#define MSGRNG_CC_3_REG 19
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#define MSGRNG_CC_4_REG 20
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#define MSGRNG_CC_5_REG 21
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#define MSGRNG_CC_6_REG 22
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#define MSGRNG_CC_7_REG 23
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#define MSGRNG_CC_8_REG 24
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#define MSGRNG_CC_9_REG 25
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#define MSGRNG_CC_10_REG 26
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#define MSGRNG_CC_11_REG 27
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#define MSGRNG_CC_12_REG 28
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#define MSGRNG_CC_13_REG 29
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#define MSGRNG_CC_14_REG 30
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#define MSGRNG_CC_15_REG 31
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#define msgrng_read_status() read_c2_register32(MSGRNG_MSG_STATUS_REG, 0)
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#define msgrng_read_config() read_c2_register32(MSGRNG_MSG_CONFIG_REG, 0)
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#define msgrng_write_config(value) write_c2_register32(MSGRNG_MSG_CONFIG_REG, 0, value)
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#define msgrng_read_bucksize(bucket) read_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, bucket)
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#define msgrng_write_bucksize(bucket, value) write_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, bucket, value)
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#define msgrng_read_cc(reg, pri) read_c2_register32(reg, pri)
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#define msgrng_write_cc(reg, value, pri) write_c2_register32(reg, pri, value)
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#define msgrng_load_rx_msg0() read_c2_register64(MSGRNG_RX_BUF_REG, 0)
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#define msgrng_load_rx_msg1() read_c2_register64(MSGRNG_RX_BUF_REG, 1)
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#define msgrng_load_rx_msg2() read_c2_register64(MSGRNG_RX_BUF_REG, 2)
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#define msgrng_load_rx_msg3() read_c2_register64(MSGRNG_RX_BUF_REG, 3)
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#define msgrng_load_tx_msg0(value) write_c2_register64(MSGRNG_TX_BUF_REG, 0, value)
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#define msgrng_load_tx_msg1(value) write_c2_register64(MSGRNG_TX_BUF_REG, 1, value)
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#define msgrng_load_tx_msg2(value) write_c2_register64(MSGRNG_TX_BUF_REG, 2, value)
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#define msgrng_load_tx_msg3(value) write_c2_register64(MSGRNG_TX_BUF_REG, 3, value)
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#define MSGRNG_CC_0_REG 16
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#define MSGRNG_CC_1_REG 17
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#define MSGRNG_CC_2_REG 18
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#define MSGRNG_CC_3_REG 19
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#define MSGRNG_CC_4_REG 20
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#define MSGRNG_CC_5_REG 21
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#define MSGRNG_CC_6_REG 22
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#define MSGRNG_CC_7_REG 23
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#define MSGRNG_CC_8_REG 24
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#define MSGRNG_CC_9_REG 25
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#define MSGRNG_CC_10_REG 26
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#define MSGRNG_CC_11_REG 27
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#define MSGRNG_CC_12_REG 28
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#define MSGRNG_CC_13_REG 29
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#define MSGRNG_CC_14_REG 30
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#define MSGRNG_CC_15_REG 31
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/* Station IDs */
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#define MSGRNG_STNID_CPU0 0x00
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@ -189,54 +171,26 @@
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#define MSGRNG_CODE_SEC 0
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#define MSGRNG_CODE_BOOT_WAKEUP 200
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#define MSGRNG_CODE_SPI4 3
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#define msgrng_read_status() read_c2_register32(MSGRNG_MSG_STATUS_REG, 0)
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static inline int
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msgrng_xgmac_stid_rfr(int id)
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{
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return !id ? MSGRNG_STNID_XMAC0RFR : MSGRNG_STNID_XMAC1RFR;
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}
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#define msgrng_read_config() read_c2_register32(MSGRNG_MSG_CONFIG_REG, 0)
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#define msgrng_write_config(value) write_c2_register32(MSGRNG_MSG_CONFIG_REG, 0, value)
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static inline int
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msgrng_xgmac_stid_jfr(int id)
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{
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return !id ? MSGRNG_STNID_XMAC0JFR : MSGRNG_STNID_XMAC1JFR;
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}
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#define msgrng_read_bucksize(bucket) read_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, bucket)
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#define msgrng_write_bucksize(bucket, value) write_c2_register32(MSGRNG_MSG_BUCKSIZE_REG, bucket, value)
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static inline int
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msgrng_xgmac_stid_tx(int id)
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{
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return !id ? MSGRNG_STNID_XMAC0_00_TX : MSGRNG_STNID_XMAC1_00_TX;
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}
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#define msgrng_read_cc(reg, pri) read_c2_register32(reg, pri)
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#define msgrng_write_cc(reg, value, pri) write_c2_register32(reg, pri, value)
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static inline int
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msgrng_gmac_stid_rfr(int id)
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{
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return (MSGRNG_STNID_GMACRFR_0);
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}
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#define msgrng_load_rx_msg0() read_c2_register64(MSGRNG_RX_BUF_REG, 0)
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#define msgrng_load_rx_msg1() read_c2_register64(MSGRNG_RX_BUF_REG, 1)
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#define msgrng_load_rx_msg2() read_c2_register64(MSGRNG_RX_BUF_REG, 2)
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#define msgrng_load_rx_msg3() read_c2_register64(MSGRNG_RX_BUF_REG, 3)
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static inline int
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msgrng_gmac_stid_rfr_split_mode(int id)
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{
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return ((id >> 1) ? MSGRNG_STNID_GMACRFR_1 : MSGRNG_STNID_GMACRFR_0);
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}
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static inline int
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msgrng_gmac_stid_jfr(int id)
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{
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return MSGRNG_STNID_GMACJFR_0;
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}
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static inline int
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msgrng_gmac_stid_jfr_split_mode(int id)
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{
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return ((id >> 1) ? MSGRNG_STNID_GMACJFR_1 : MSGRNG_STNID_GMACJFR_0);
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}
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static inline int
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msgrng_gmac_stid_tx(int id)
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{
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return (MSGRNG_STNID_GMACTX0 + id);
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}
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#define msgrng_load_tx_msg0(value) write_c2_register64(MSGRNG_TX_BUF_REG, 0, value)
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#define msgrng_load_tx_msg1(value) write_c2_register64(MSGRNG_TX_BUF_REG, 1, value)
|
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#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)
|
||||
|
||||
static inline void
|
||||
msgrng_send(unsigned int stid)
|
||||
|
|
@ -280,30 +234,21 @@ msgrng_wait(unsigned int mask)
|
|||
);
|
||||
}
|
||||
|
||||
#define msgrng_enable(flags) \
|
||||
do { \
|
||||
__asm__ volatile ( \
|
||||
".set push\n\t" \
|
||||
".set reorder\n\t" \
|
||||
".set noat\n\t" \
|
||||
"mfc0 %0, $12\n\t" \
|
||||
"li $8, 0x40000001\n\t" \
|
||||
"or $1, %0, $8\n\t" \
|
||||
"xori $1, 1\n\t" \
|
||||
".set noreorder\n\t" \
|
||||
"mtc0 $1, $12\n\t" \
|
||||
".set\tpop\n\t" \
|
||||
: "=r" (flags) \
|
||||
: \
|
||||
: "$8" \
|
||||
); \
|
||||
} while (0)
|
||||
static __inline uint32_t
|
||||
msgrng_access_enable(void)
|
||||
{
|
||||
uint32_t sr = mips_rd_status();
|
||||
|
||||
#define msgrng_disable(flags) __asm__ volatile ( \
|
||||
"mtc0 %0, $12" : : "r" (flags))
|
||||
mips_wr_status((sr & ~MIPS_SR_INT_IE) | MIPS_SR_COP_2_BIT);
|
||||
return (sr);
|
||||
}
|
||||
|
||||
#define msgrng_flags_save(flags) msgrng_enable(flags)
|
||||
#define msgrng_flags_restore(flags) msgrng_disable(flags)
|
||||
static __inline void
|
||||
msgrng_restore(uint32_t sr)
|
||||
{
|
||||
|
||||
mips_wr_status(sr);
|
||||
}
|
||||
|
||||
struct msgrng_msg {
|
||||
__uint64_t msg0;
|
||||
|
|
@ -355,7 +300,7 @@ message_send_block_fast(int size, unsigned int code, unsigned int stid,
|
|||
_tmp; \
|
||||
} )
|
||||
|
||||
static __inline__ int
|
||||
static __inline int
|
||||
message_send(unsigned int size, unsigned int code,
|
||||
unsigned int stid, struct msgrng_msg *msg)
|
||||
{
|
||||
|
|
@ -369,42 +314,35 @@ message_send(unsigned int size, unsigned int code,
|
|||
msgrng_load_tx_msg3(msg->msg3);
|
||||
|
||||
dest = ((size - 1) << 16) | (code << 8) | (stid);
|
||||
|
||||
msgrng_send(dest);
|
||||
|
||||
for (i = 0; i < 16; i++) {
|
||||
/* Wait for the thread pending to clear */
|
||||
do {
|
||||
status = msgrng_read_status();
|
||||
KASSERT(i++ < 10000, ("Too many fails\n"));
|
||||
} while ((status & 0x2) != 0);
|
||||
|
||||
if (status & 0x6) {
|
||||
continue;
|
||||
} else
|
||||
break;
|
||||
}
|
||||
return msgrng_read_status() & 0x06;
|
||||
/* If there is a credit failure, return error */
|
||||
return status & 0x06;
|
||||
}
|
||||
|
||||
static __inline__ int
|
||||
static __inline int
|
||||
message_send_retry(unsigned int size, unsigned int code,
|
||||
unsigned int stid, struct msgrng_msg *msg)
|
||||
{
|
||||
int res = 0;
|
||||
int retry = 0;
|
||||
int i, ret;
|
||||
|
||||
for (;;) {
|
||||
res = message_send(size, code, stid, msg);
|
||||
/* retry a pending fail */
|
||||
if (res & 0x02)
|
||||
continue;
|
||||
/* credit fail */
|
||||
if (res & 0x04)
|
||||
retry++;
|
||||
else
|
||||
break;
|
||||
if (retry == 4)
|
||||
return res & 0x06;
|
||||
/*
|
||||
* we are in with interrupt disabled, retrying too many
|
||||
* times is not good
|
||||
*/
|
||||
for (i = 0; i < 16; i++) {
|
||||
ret = message_send(size, code, stid, msg);
|
||||
if (ret == 0)
|
||||
return (0);
|
||||
}
|
||||
|
||||
return 0;
|
||||
return (1);
|
||||
}
|
||||
|
||||
static __inline__ int
|
||||
|
|
@ -457,27 +395,6 @@ extern struct stn_cc xls_cc_table_pcie;
|
|||
extern struct stn_cc xls_cc_table_dma;
|
||||
extern struct stn_cc xls_cc_table_sec;
|
||||
|
||||
|
||||
#define msgrng_access_save(lock, mflags) do { \
|
||||
mtx_lock_spin(lock); \
|
||||
msgrng_flags_save(mflags); \
|
||||
}while(0)
|
||||
|
||||
#define msgrng_access_restore(lock, mflags) do { \
|
||||
msgrng_flags_restore(mflags); \
|
||||
mtx_unlock_spin(lock); \
|
||||
}while(0)
|
||||
|
||||
#define msgrng_access_enable(mflags) do { \
|
||||
critical_enter(); \
|
||||
msgrng_flags_save(mflags); \
|
||||
} while(0)
|
||||
|
||||
#define msgrng_access_disable(mflags) do { \
|
||||
msgrng_flags_restore(mflags); \
|
||||
critical_exit(); \
|
||||
} while(0)
|
||||
|
||||
/*
|
||||
* NOTE: this is not stationid/8, ie the station numbers below are just
|
||||
* for internal use
|
||||
|
|
@ -504,14 +421,10 @@ enum {
|
|||
MAX_TX_STNS
|
||||
};
|
||||
|
||||
extern int
|
||||
register_msgring_handler(int major,
|
||||
extern int register_msgring_handler(int major,
|
||||
void (*action) (int, int, int, int, struct msgrng_msg *, void *),
|
||||
void *dev_id);
|
||||
extern void xlr_msgring_cpu_init(void);
|
||||
|
||||
extern void xlr_msgring_config(void);
|
||||
|
||||
#define cpu_to_msgring_bucket(cpu) ((((cpu) >> 2)<<3)|((cpu) & 0x03))
|
||||
extern void xlr_msgring_cpu_init(void);
|
||||
extern void xlr_msgring_config(void);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue