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path: root/drivers/net/fddi/skfp/hwmtm.c
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-rw-r--r--drivers/net/fddi/skfp/hwmtm.c2178
1 files changed, 2178 insertions, 0 deletions
diff --git a/drivers/net/fddi/skfp/hwmtm.c b/drivers/net/fddi/skfp/hwmtm.c
new file mode 100644
index 00000000000..e26398b5a7d
--- /dev/null
+++ b/drivers/net/fddi/skfp/hwmtm.c
@@ -0,0 +1,2178 @@
+/******************************************************************************
+ *
+ * (C)Copyright 1998,1999 SysKonnect,
+ * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
+ *
+ * See the file "skfddi.c" for further information.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * The information in this file is provided "AS IS" without warranty.
+ *
+ ******************************************************************************/
+
+#ifndef lint
+static char const ID_sccs[] = "@(#)hwmtm.c 1.40 99/05/31 (C) SK" ;
+#endif
+
+#define HWMTM
+
+#ifndef FDDI
+#define FDDI
+#endif
+
+#include "h/types.h"
+#include "h/fddi.h"
+#include "h/smc.h"
+#include "h/supern_2.h"
+#include "h/skfbiinc.h"
+
+/*
+ -------------------------------------------------------------
+ DOCUMENTATION
+ -------------------------------------------------------------
+ BEGIN_MANUAL_ENTRY(DOCUMENTATION)
+
+ T B D
+
+ END_MANUAL_ENTRY
+*/
+/*
+ -------------------------------------------------------------
+ LOCAL VARIABLES:
+ -------------------------------------------------------------
+*/
+#ifdef COMMON_MB_POOL
+static SMbuf *mb_start = 0 ;
+static SMbuf *mb_free = 0 ;
+static int mb_init = FALSE ;
+static int call_count = 0 ;
+#endif
+
+/*
+ -------------------------------------------------------------
+ EXTERNE VARIABLES:
+ -------------------------------------------------------------
+*/
+
+#ifdef DEBUG
+#ifndef DEBUG_BRD
+extern struct smt_debug debug ;
+#endif
+#endif
+
+#ifdef NDIS_OS2
+extern u_char offDepth ;
+extern u_char force_irq_pending ;
+#endif
+
+/*
+ -------------------------------------------------------------
+ LOCAL FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+static void queue_llc_rx(struct s_smc *smc, SMbuf *mb);
+static void smt_to_llc(struct s_smc *smc, SMbuf *mb);
+static void init_txd_ring(struct s_smc *smc);
+static void init_rxd_ring(struct s_smc *smc);
+static void queue_txd_mb(struct s_smc *smc, SMbuf *mb);
+static u_long init_descr_ring(struct s_smc *smc, union s_fp_descr volatile *start,
+ int count);
+static u_long repair_txd_ring(struct s_smc *smc, struct s_smt_tx_queue *queue);
+static u_long repair_rxd_ring(struct s_smc *smc, struct s_smt_rx_queue *queue);
+static SMbuf* get_llc_rx(struct s_smc *smc);
+static SMbuf* get_txd_mb(struct s_smc *smc);
+static void mac_drv_clear_txd(struct s_smc *smc);
+
+/*
+ -------------------------------------------------------------
+ EXTERNAL FUNCTIONS:
+ -------------------------------------------------------------
+*/
+/* The external SMT functions are listed in cmtdef.h */
+
+extern void* mac_drv_get_space(struct s_smc *smc, unsigned int size);
+extern void* mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size);
+extern void mac_drv_fill_rxd(struct s_smc *smc);
+extern void mac_drv_tx_complete(struct s_smc *smc,
+ volatile struct s_smt_fp_txd *txd);
+extern void mac_drv_rx_complete(struct s_smc *smc,
+ volatile struct s_smt_fp_rxd *rxd,
+ int frag_count, int len);
+extern void mac_drv_requeue_rxd(struct s_smc *smc,
+ volatile struct s_smt_fp_rxd *rxd,
+ int frag_count);
+extern void mac_drv_clear_rxd(struct s_smc *smc,
+ volatile struct s_smt_fp_rxd *rxd, int frag_count);
+
+#ifdef USE_OS_CPY
+extern void hwm_cpy_rxd2mb(void);
+extern void hwm_cpy_txd2mb(void);
+#endif
+
+#ifdef ALL_RX_COMPLETE
+extern void mac_drv_all_receives_complete(void);
+#endif
+
+extern u_long mac_drv_virt2phys(struct s_smc *smc, void *virt);
+extern u_long dma_master(struct s_smc *smc, void *virt, int len, int flag);
+
+#ifdef NDIS_OS2
+extern void post_proc(void);
+#else
+extern void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr,
+ int flag);
+#endif
+
+extern int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead,
+ int la_len);
+
+/*
+ -------------------------------------------------------------
+ PUBLIC FUNCTIONS:
+ -------------------------------------------------------------
+*/
+void process_receive(struct s_smc *smc);
+void fddi_isr(struct s_smc *smc);
+void smt_free_mbuf(struct s_smc *smc, SMbuf *mb);
+void init_driver_fplus(struct s_smc *smc);
+void mac_drv_rx_mode(struct s_smc *smc, int mode);
+void init_fddi_driver(struct s_smc *smc, u_char *mac_addr);
+void mac_drv_clear_tx_queue(struct s_smc *smc);
+void mac_drv_clear_rx_queue(struct s_smc *smc);
+void hwm_tx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
+ int frame_status);
+void hwm_rx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
+ int frame_status);
+
+int mac_drv_init(struct s_smc *smc);
+int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, int frame_len,
+ int frame_status);
+
+u_int mac_drv_check_space(void);
+
+SMbuf* smt_get_mbuf(struct s_smc *smc);
+
+#ifdef DEBUG
+ void mac_drv_debug_lev(void);
+#endif
+
+/*
+ -------------------------------------------------------------
+ MACROS:
+ -------------------------------------------------------------
+*/
+#ifndef UNUSED
+#ifdef lint
+#define UNUSED(x) (x) = (x)
+#else
+#define UNUSED(x)
+#endif
+#endif
+
+#ifdef USE_CAN_ADDR
+#define MA smc->hw.fddi_canon_addr.a
+#define GROUP_ADDR_BIT 0x01
+#else
+#define MA smc->hw.fddi_home_addr.a
+#define GROUP_ADDR_BIT 0x80
+#endif
+
+#define RXD_TXD_COUNT (HWM_ASYNC_TXD_COUNT+HWM_SYNC_TXD_COUNT+\
+ SMT_R1_RXD_COUNT+SMT_R2_RXD_COUNT)
+
+#ifdef MB_OUTSIDE_SMC
+#define EXT_VIRT_MEM ((RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd) +\
+ MAX_MBUF*sizeof(SMbuf))
+#define EXT_VIRT_MEM_2 ((RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd))
+#else
+#define EXT_VIRT_MEM ((RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd))
+#endif
+
+ /*
+ * define critical read for 16 Bit drivers
+ */
+#if defined(NDIS_OS2) || defined(ODI2)
+#define CR_READ(var) ((var) & 0xffff0000 | ((var) & 0xffff))
+#else
+#define CR_READ(var) (__le32)(var)
+#endif
+
+#define IMASK_SLOW (IS_PLINT1 | IS_PLINT2 | IS_TIMINT | IS_TOKEN | \
+ IS_MINTR1 | IS_MINTR2 | IS_MINTR3 | IS_R1_P | \
+ IS_R1_C | IS_XA_C | IS_XS_C)
+
+/*
+ -------------------------------------------------------------
+ INIT- AND SMT FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+
+/*
+ * BEGIN_MANUAL_ENTRY(mac_drv_check_space)
+ * u_int mac_drv_check_space()
+ *
+ * function DOWNCALL (drvsr.c)
+ * This function calculates the needed non virtual
+ * memory for MBufs, RxD and TxD descriptors etc.
+ * needed by the driver.
+ *
+ * return u_int memory in bytes
+ *
+ * END_MANUAL_ENTRY
+ */
+u_int mac_drv_check_space(void)
+{
+#ifdef MB_OUTSIDE_SMC
+#ifdef COMMON_MB_POOL
+ call_count++ ;
+ if (call_count == 1) {
+ return EXT_VIRT_MEM;
+ }
+ else {
+ return EXT_VIRT_MEM_2;
+ }
+#else
+ return EXT_VIRT_MEM;
+#endif
+#else
+ return 0;
+#endif
+}
+
+/*
+ * BEGIN_MANUAL_ENTRY(mac_drv_init)
+ * void mac_drv_init(smc)
+ *
+ * function DOWNCALL (drvsr.c)
+ * In this function the hardware module allocates it's
+ * memory.
+ * The operating system dependent module should call
+ * mac_drv_init once, after the adatper is detected.
+ * END_MANUAL_ENTRY
+ */
+int mac_drv_init(struct s_smc *smc)
+{
+ if (sizeof(struct s_smt_fp_rxd) % 16) {
+ SMT_PANIC(smc,HWM_E0001,HWM_E0001_MSG) ;
+ }
+ if (sizeof(struct s_smt_fp_txd) % 16) {
+ SMT_PANIC(smc,HWM_E0002,HWM_E0002_MSG) ;
+ }
+
+ /*
+ * get the required memory for the RxDs and TxDs
+ */
+ if (!(smc->os.hwm.descr_p = (union s_fp_descr volatile *)
+ mac_drv_get_desc_mem(smc,(u_int)
+ (RXD_TXD_COUNT+1)*sizeof(struct s_smt_fp_txd)))) {
+ return 1; /* no space the hwm modul can't work */
+ }
+
+ /*
+ * get the memory for the SMT MBufs
+ */
+#ifndef MB_OUTSIDE_SMC
+ smc->os.hwm.mbuf_pool.mb_start=(SMbuf *)(&smc->os.hwm.mbuf_pool.mb[0]) ;
+#else
+#ifndef COMMON_MB_POOL
+ if (!(smc->os.hwm.mbuf_pool.mb_start = (SMbuf *) mac_drv_get_space(smc,
+ MAX_MBUF*sizeof(SMbuf)))) {
+ return 1; /* no space the hwm modul can't work */
+ }
+#else
+ if (!mb_start) {
+ if (!(mb_start = (SMbuf *) mac_drv_get_space(smc,
+ MAX_MBUF*sizeof(SMbuf)))) {
+ return 1; /* no space the hwm modul can't work */
+ }
+ }
+#endif
+#endif
+ return 0;
+}
+
+/*
+ * BEGIN_MANUAL_ENTRY(init_driver_fplus)
+ * init_driver_fplus(smc)
+ *
+ * Sets hardware modul specific values for the mode register 2
+ * (e.g. the byte alignment for the received frames, the position of the
+ * least significant byte etc.)
+ * END_MANUAL_ENTRY
+ */
+void init_driver_fplus(struct s_smc *smc)
+{
+ smc->hw.fp.mdr2init = FM_LSB | FM_BMMODE | FM_ENNPRQ | FM_ENHSRQ | 3 ;
+
+#ifdef PCI
+ smc->hw.fp.mdr2init |= FM_CHKPAR | FM_PARITY ;
+#endif
+ smc->hw.fp.mdr3init = FM_MENRQAUNLCK | FM_MENRS ;
+
+#ifdef USE_CAN_ADDR
+ /* enable address bit swapping */
+ smc->hw.fp.frselreg_init = FM_ENXMTADSWAP | FM_ENRCVADSWAP ;
+#endif
+}
+
+static u_long init_descr_ring(struct s_smc *smc,
+ union s_fp_descr volatile *start,
+ int count)
+{
+ int i ;
+ union s_fp_descr volatile *d1 ;
+ union s_fp_descr volatile *d2 ;
+ u_long phys ;
+
+ DB_GEN("descr ring starts at = %x ",(void *)start,0,3) ;
+ for (i=count-1, d1=start; i ; i--) {
+ d2 = d1 ;
+ d1++ ; /* descr is owned by the host */
+ d2->r.rxd_rbctrl = cpu_to_le32(BMU_CHECK) ;
+ d2->r.rxd_next = &d1->r ;
+ phys = mac_drv_virt2phys(smc,(void *)d1) ;
+ d2->r.rxd_nrdadr = cpu_to_le32(phys) ;
+ }
+ DB_GEN("descr ring ends at = %x ",(void *)d1,0,3) ;
+ d1->r.rxd_rbctrl = cpu_to_le32(BMU_CHECK) ;
+ d1->r.rxd_next = &start->r ;
+ phys = mac_drv_virt2phys(smc,(void *)start) ;
+ d1->r.rxd_nrdadr = cpu_to_le32(phys) ;
+
+ for (i=count, d1=start; i ; i--) {
+ DRV_BUF_FLUSH(&d1->r,DDI_DMA_SYNC_FORDEV) ;
+ d1++;
+ }
+ return phys;
+}
+
+static void init_txd_ring(struct s_smc *smc)
+{
+ struct s_smt_fp_txd volatile *ds ;
+ struct s_smt_tx_queue *queue ;
+ u_long phys ;
+
+ /*
+ * initialize the transmit descriptors
+ */
+ ds = (struct s_smt_fp_txd volatile *) ((char *)smc->os.hwm.descr_p +
+ SMT_R1_RXD_COUNT*sizeof(struct s_smt_fp_rxd)) ;
+ queue = smc->hw.fp.tx[QUEUE_A0] ;
+ DB_GEN("Init async TxD ring, %d TxDs ",HWM_ASYNC_TXD_COUNT,0,3) ;
+ (void)init_descr_ring(smc,(union s_fp_descr volatile *)ds,
+ HWM_ASYNC_TXD_COUNT) ;
+ phys = le32_to_cpu(ds->txd_ntdadr) ;
+ ds++ ;
+ queue->tx_curr_put = queue->tx_curr_get = ds ;
+ ds-- ;
+ queue->tx_free = HWM_ASYNC_TXD_COUNT ;
+ queue->tx_used = 0 ;
+ outpd(ADDR(B5_XA_DA),phys) ;
+
+ ds = (struct s_smt_fp_txd volatile *) ((char *)ds +
+ HWM_ASYNC_TXD_COUNT*sizeof(struct s_smt_fp_txd)) ;
+ queue = smc->hw.fp.tx[QUEUE_S] ;
+ DB_GEN("Init sync TxD ring, %d TxDs ",HWM_SYNC_TXD_COUNT,0,3) ;
+ (void)init_descr_ring(smc,(union s_fp_descr volatile *)ds,
+ HWM_SYNC_TXD_COUNT) ;
+ phys = le32_to_cpu(ds->txd_ntdadr) ;
+ ds++ ;
+ queue->tx_curr_put = queue->tx_curr_get = ds ;
+ queue->tx_free = HWM_SYNC_TXD_COUNT ;
+ queue->tx_used = 0 ;
+ outpd(ADDR(B5_XS_DA),phys) ;
+}
+
+static void init_rxd_ring(struct s_smc *smc)
+{
+ struct s_smt_fp_rxd volatile *ds ;
+ struct s_smt_rx_queue *queue ;
+ u_long phys ;
+
+ /*
+ * initialize the receive descriptors
+ */
+ ds = (struct s_smt_fp_rxd volatile *) smc->os.hwm.descr_p ;
+ queue = smc->hw.fp.rx[QUEUE_R1] ;
+ DB_GEN("Init RxD ring, %d RxDs ",SMT_R1_RXD_COUNT,0,3) ;
+ (void)init_descr_ring(smc,(union s_fp_descr volatile *)ds,
+ SMT_R1_RXD_COUNT) ;
+ phys = le32_to_cpu(ds->rxd_nrdadr) ;
+ ds++ ;
+ queue->rx_curr_put = queue->rx_curr_get = ds ;
+ queue->rx_free = SMT_R1_RXD_COUNT ;
+ queue->rx_used = 0 ;
+ outpd(ADDR(B4_R1_DA),phys) ;
+}
+
+/*
+ * BEGIN_MANUAL_ENTRY(init_fddi_driver)
+ * void init_fddi_driver(smc,mac_addr)
+ *
+ * initializes the driver and it's variables
+ *
+ * END_MANUAL_ENTRY
+ */
+void init_fddi_driver(struct s_smc *smc, u_char *mac_addr)
+{
+ SMbuf *mb ;
+ int i ;
+
+ init_board(smc,mac_addr) ;
+ (void)init_fplus(smc) ;
+
+ /*
+ * initialize the SMbufs for the SMT
+ */
+#ifndef COMMON_MB_POOL
+ mb = smc->os.hwm.mbuf_pool.mb_start ;
+ smc->os.hwm.mbuf_pool.mb_free = (SMbuf *)NULL ;
+ for (i = 0; i < MAX_MBUF; i++) {
+ mb->sm_use_count = 1 ;
+ smt_free_mbuf(smc,mb) ;
+ mb++ ;
+ }
+#else
+ mb = mb_start ;
+ if (!mb_init) {
+ mb_free = 0 ;
+ for (i = 0; i < MAX_MBUF; i++) {
+ mb->sm_use_count = 1 ;
+ smt_free_mbuf(smc,mb) ;
+ mb++ ;
+ }
+ mb_init = TRUE ;
+ }
+#endif
+
+ /*
+ * initialize the other variables
+ */
+ smc->os.hwm.llc_rx_pipe = smc->os.hwm.llc_rx_tail = (SMbuf *)NULL ;
+ smc->os.hwm.txd_tx_pipe = smc->os.hwm.txd_tx_tail = NULL ;
+ smc->os.hwm.pass_SMT = smc->os.hwm.pass_NSA = smc->os.hwm.pass_DB = 0 ;
+ smc->os.hwm.pass_llc_promisc = TRUE ;
+ smc->os.hwm.queued_rx_frames = smc->os.hwm.queued_txd_mb = 0 ;
+ smc->os.hwm.detec_count = 0 ;
+ smc->os.hwm.rx_break = 0 ;
+ smc->os.hwm.rx_len_error = 0 ;
+ smc->os.hwm.isr_flag = FALSE ;
+
+ /*
+ * make sure that the start pointer is 16 byte aligned
+ */
+ i = 16 - ((long)smc->os.hwm.descr_p & 0xf) ;
+ if (i != 16) {
+ DB_GEN("i = %d",i,0,3) ;
+ smc->os.hwm.descr_p = (union s_fp_descr volatile *)
+ ((char *)smc->os.hwm.descr_p+i) ;
+ }
+ DB_GEN("pt to descr area = %x",(void *)smc->os.hwm.descr_p,0,3) ;
+
+ init_txd_ring(smc) ;
+ init_rxd_ring(smc) ;
+ mac_drv_fill_rxd(smc) ;
+
+ init_plc(smc) ;
+}
+
+
+SMbuf *smt_get_mbuf(struct s_smc *smc)
+{
+ register SMbuf *mb ;
+
+#ifndef COMMON_MB_POOL
+ mb = smc->os.hwm.mbuf_pool.mb_free ;
+#else
+ mb = mb_free ;
+#endif
+ if (mb) {
+#ifndef COMMON_MB_POOL
+ smc->os.hwm.mbuf_pool.mb_free = mb->sm_next ;
+#else
+ mb_free = mb->sm_next ;
+#endif
+ mb->sm_off = 8 ;
+ mb->sm_use_count = 1 ;
+ }
+ DB_GEN("get SMbuf: mb = %x",(void *)mb,0,3) ;
+ return mb; /* May be NULL */
+}
+
+void smt_free_mbuf(struct s_smc *smc, SMbuf *mb)
+{
+
+ if (mb) {
+ mb->sm_use_count-- ;
+ DB_GEN("free_mbuf: sm_use_count = %d",mb->sm_use_count,0,3) ;
+ /*
+ * If the use_count is != zero the MBuf is queued
+ * more than once and must not queued into the
+ * free MBuf queue
+ */
+ if (!mb->sm_use_count) {
+ DB_GEN("free SMbuf: mb = %x",(void *)mb,0,3) ;
+#ifndef COMMON_MB_POOL
+ mb->sm_next = smc->os.hwm.mbuf_pool.mb_free ;
+ smc->os.hwm.mbuf_pool.mb_free = mb ;
+#else
+ mb->sm_next = mb_free ;
+ mb_free = mb ;
+#endif
+ }
+ }
+ else
+ SMT_PANIC(smc,HWM_E0003,HWM_E0003_MSG) ;
+}
+
+
+/*
+ * BEGIN_MANUAL_ENTRY(mac_drv_repair_descr)
+ * void mac_drv_repair_descr(smc)
+ *
+ * function called from SMT (HWM / hwmtm.c)
+ * The BMU is idle when this function is called.
+ * Mac_drv_repair_descr sets up the physical address
+ * for all receive and transmit queues where the BMU
+ * should continue.
+ * It may be that the BMU was reseted during a fragmented
+ * transfer. In this case there are some fragments which will
+ * never completed by the BMU. The OWN bit of this fragments
+ * must be switched to be owned by the host.
+ *
+ * Give a start command to the receive BMU.
+ * Start the transmit BMUs if transmit frames pending.
+ *
+ * END_MANUAL_ENTRY
+ */
+void mac_drv_repair_descr(struct s_smc *smc)
+{
+ u_long phys ;
+
+ if (smc->hw.hw_state != STOPPED) {
+ SK_BREAK() ;
+ SMT_PANIC(smc,HWM_E0013,HWM_E0013_MSG) ;
+ return ;
+ }
+
+ /*
+ * repair tx queues: don't start
+ */
+ phys = repair_txd_ring(smc,smc->hw.fp.tx[QUEUE_A0]) ;
+ outpd(ADDR(B5_XA_DA),phys) ;
+ if (smc->hw.fp.tx_q[QUEUE_A0].tx_used) {
+ outpd(ADDR(B0_XA_CSR),CSR_START) ;
+ }
+ phys = repair_txd_ring(smc,smc->hw.fp.tx[QUEUE_S]) ;
+ outpd(ADDR(B5_XS_DA),phys) ;
+ if (smc->hw.fp.tx_q[QUEUE_S].tx_used) {
+ outpd(ADDR(B0_XS_CSR),CSR_START) ;
+ }
+
+ /*
+ * repair rx queues
+ */
+ phys = repair_rxd_ring(smc,smc->hw.fp.rx[QUEUE_R1]) ;
+ outpd(ADDR(B4_R1_DA),phys) ;
+ outpd(ADDR(B0_R1_CSR),CSR_START) ;
+}
+
+static u_long repair_txd_ring(struct s_smc *smc, struct s_smt_tx_queue *queue)
+{
+ int i ;
+ int tx_used ;
+ u_long phys ;
+ u_long tbctrl ;
+ struct s_smt_fp_txd volatile *t ;
+
+ SK_UNUSED(smc) ;
+
+ t = queue->tx_curr_get ;
+ tx_used = queue->tx_used ;
+ for (i = tx_used+queue->tx_free-1 ; i ; i-- ) {
+ t = t->txd_next ;
+ }
+ phys = le32_to_cpu(t->txd_ntdadr) ;
+
+ t = queue->tx_curr_get ;
+ while (tx_used) {
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORCPU) ;
+ tbctrl = le32_to_cpu(t->txd_tbctrl) ;
+
+ if (tbctrl & BMU_OWN) {
+ if (tbctrl & BMU_STF) {
+ break ; /* exit the loop */
+ }
+ else {
+ /*
+ * repair the descriptor
+ */
+ t->txd_tbctrl &= ~cpu_to_le32(BMU_OWN) ;
+ }
+ }
+ phys = le32_to_cpu(t->txd_ntdadr) ;
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
+ t = t->txd_next ;
+ tx_used-- ;
+ }
+ return phys;
+}
+
+/*
+ * Repairs the receive descriptor ring and returns the physical address
+ * where the BMU should continue working.
+ *
+ * o The physical address where the BMU was stopped has to be
+ * determined. This is the next RxD after rx_curr_get with an OWN
+ * bit set.
+ * o The BMU should start working at beginning of the next frame.
+ * RxDs with an OWN bit set but with a reset STF bit should be
+ * skipped and owned by the driver (OWN = 0).
+ */
+static u_long repair_rxd_ring(struct s_smc *smc, struct s_smt_rx_queue *queue)
+{
+ int i ;
+ int rx_used ;
+ u_long phys ;
+ u_long rbctrl ;
+ struct s_smt_fp_rxd volatile *r ;
+
+ SK_UNUSED(smc) ;
+
+ r = queue->rx_curr_get ;
+ rx_used = queue->rx_used ;
+ for (i = SMT_R1_RXD_COUNT-1 ; i ; i-- ) {
+ r = r->rxd_next ;
+ }
+ phys = le32_to_cpu(r->rxd_nrdadr) ;
+
+ r = queue->rx_curr_get ;
+ while (rx_used) {
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ rbctrl = le32_to_cpu(r->rxd_rbctrl) ;
+
+ if (rbctrl & BMU_OWN) {
+ if (rbctrl & BMU_STF) {
+ break ; /* exit the loop */
+ }
+ else {
+ /*
+ * repair the descriptor
+ */
+ r->rxd_rbctrl &= ~cpu_to_le32(BMU_OWN) ;
+ }
+ }
+ phys = le32_to_cpu(r->rxd_nrdadr) ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
+ r = r->rxd_next ;
+ rx_used-- ;
+ }
+ return phys;
+}
+
+
+/*
+ -------------------------------------------------------------
+ INTERRUPT SERVICE ROUTINE:
+ -------------------------------------------------------------
+*/
+
+/*
+ * BEGIN_MANUAL_ENTRY(fddi_isr)
+ * void fddi_isr(smc)
+ *
+ * function DOWNCALL (drvsr.c)
+ * interrupt service routine, handles the interrupt requests
+ * generated by the FDDI adapter.
+ *
+ * NOTE: The operating system dependent module must guarantee that the
+ * interrupts of the adapter are disabled when it calls fddi_isr.
+ *
+ * About the USE_BREAK_ISR mechanismn:
+ *
+ * The main requirement of this mechanismn is to force an timer IRQ when
+ * leaving process_receive() with leave_isr set. process_receive() may
+ * be called at any time from anywhere!
+ * To be sure we don't miss such event we set 'force_irq' per default.
+ * We have to force and Timer IRQ if 'smc->os.hwm.leave_isr' AND
+ * 'force_irq' are set. 'force_irq' may be reset if a receive complete
+ * IRQ is pending.
+ *
+ * END_MANUAL_ENTRY
+ */
+void fddi_isr(struct s_smc *smc)
+{
+ u_long is ; /* ISR source */
+ u_short stu, stl ;
+ SMbuf *mb ;
+
+#ifdef USE_BREAK_ISR
+ int force_irq ;
+#endif
+
+#ifdef ODI2
+ if (smc->os.hwm.rx_break) {
+ mac_drv_fill_rxd(smc) ;
+ if (smc->hw.fp.rx_q[QUEUE_R1].rx_used > 0) {
+ smc->os.hwm.rx_break = 0 ;
+ process_receive(smc) ;
+ }
+ else {
+ smc->os.hwm.detec_count = 0 ;
+ smt_force_irq(smc) ;
+ }
+ }
+#endif
+ smc->os.hwm.isr_flag = TRUE ;
+
+#ifdef USE_BREAK_ISR
+ force_irq = TRUE ;
+ if (smc->os.hwm.leave_isr) {
+ smc->os.hwm.leave_isr = FALSE ;
+ process_receive(smc) ;
+ }
+#endif
+
+ while ((is = GET_ISR() & ISR_MASK)) {
+ NDD_TRACE("CH0B",is,0,0) ;
+ DB_GEN("ISA = 0x%x",is,0,7) ;
+
+ if (is & IMASK_SLOW) {
+ NDD_TRACE("CH1b",is,0,0) ;
+ if (is & IS_PLINT1) { /* PLC1 */
+ plc1_irq(smc) ;
+ }
+ if (is & IS_PLINT2) { /* PLC2 */
+ plc2_irq(smc) ;
+ }
+ if (is & IS_MINTR1) { /* FORMAC+ STU1(U/L) */
+ stu = inpw(FM_A(FM_ST1U)) ;
+ stl = inpw(FM_A(FM_ST1L)) ;
+ DB_GEN("Slow transmit complete",0,0,6) ;
+ mac1_irq(smc,stu,stl) ;
+ }
+ if (is & IS_MINTR2) { /* FORMAC+ STU2(U/L) */
+ stu= inpw(FM_A(FM_ST2U)) ;
+ stl= inpw(FM_A(FM_ST2L)) ;
+ DB_GEN("Slow receive complete",0,0,6) ;
+ DB_GEN("stl = %x : stu = %x",stl,stu,7) ;
+ mac2_irq(smc,stu,stl) ;
+ }
+ if (is & IS_MINTR3) { /* FORMAC+ STU3(U/L) */
+ stu= inpw(FM_A(FM_ST3U)) ;
+ stl= inpw(FM_A(FM_ST3L)) ;
+ DB_GEN("FORMAC Mode Register 3",0,0,6) ;
+ mac3_irq(smc,stu,stl) ;
+ }
+ if (is & IS_TIMINT) { /* Timer 82C54-2 */
+ timer_irq(smc) ;
+#ifdef NDIS_OS2
+ force_irq_pending = 0 ;
+#endif
+ /*
+ * out of RxD detection
+ */
+ if (++smc->os.hwm.detec_count > 4) {
+ /*
+ * check out of RxD condition
+ */
+ process_receive(smc) ;
+ }
+ }
+ if (is & IS_TOKEN) { /* Restricted Token Monitor */
+ rtm_irq(smc) ;
+ }
+ if (is & IS_R1_P) { /* Parity error rx queue 1 */
+ /* clear IRQ */
+ outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_P) ;
+ SMT_PANIC(smc,HWM_E0004,HWM_E0004_MSG) ;
+ }
+ if (is & IS_R1_C) { /* Encoding error rx queue 1 */
+ /* clear IRQ */
+ outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_C) ;
+ SMT_PANIC(smc,HWM_E0005,HWM_E0005_MSG) ;
+ }
+ if (is & IS_XA_C) { /* Encoding error async tx q */
+ /* clear IRQ */
+ outpd(ADDR(B5_XA_CSR),CSR_IRQ_CL_C) ;
+ SMT_PANIC(smc,HWM_E0006,HWM_E0006_MSG) ;
+ }
+ if (is & IS_XS_C) { /* Encoding error sync tx q */
+ /* clear IRQ */
+ outpd(ADDR(B5_XS_CSR),CSR_IRQ_CL_C) ;
+ SMT_PANIC(smc,HWM_E0007,HWM_E0007_MSG) ;
+ }
+ }
+
+ /*
+ * Fast Tx complete Async/Sync Queue (BMU service)
+ */
+ if (is & (IS_XS_F|IS_XA_F)) {
+ DB_GEN("Fast tx complete queue",0,0,6) ;
+ /*
+ * clear IRQ, Note: no IRQ is lost, because
+ * we always service both queues
+ */
+ outpd(ADDR(B5_XS_CSR),CSR_IRQ_CL_F) ;
+ outpd(ADDR(B5_XA_CSR),CSR_IRQ_CL_F) ;
+ mac_drv_clear_txd(smc) ;
+ llc_restart_tx(smc) ;
+ }
+
+ /*
+ * Fast Rx Complete (BMU service)
+ */
+ if (is & IS_R1_F) {
+ DB_GEN("Fast receive complete",0,0,6) ;
+ /* clear IRQ */
+#ifndef USE_BREAK_ISR
+ outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_F) ;
+ process_receive(smc) ;
+#else
+ process_receive(smc) ;
+ if (smc->os.hwm.leave_isr) {
+ force_irq = FALSE ;
+ } else {
+ outpd(ADDR(B4_R1_CSR),CSR_IRQ_CL_F) ;
+ process_receive(smc) ;
+ }
+#endif
+ }
+
+#ifndef NDIS_OS2
+ while ((mb = get_llc_rx(smc))) {
+ smt_to_llc(smc,mb) ;
+ }
+#else
+ if (offDepth)
+ post_proc() ;
+
+ while (!offDepth && (mb = get_llc_rx(smc))) {
+ smt_to_llc(smc,mb) ;
+ }
+
+ if (!offDepth && smc->os.hwm.rx_break) {
+ process_receive(smc) ;
+ }
+#endif
+ if (smc->q.ev_get != smc->q.ev_put) {
+ NDD_TRACE("CH2a",0,0,0) ;
+ ev_dispatcher(smc) ;
+ }
+#ifdef NDIS_OS2
+ post_proc() ;
+ if (offDepth) { /* leave fddi_isr because */
+ break ; /* indications not allowed */
+ }
+#endif
+#ifdef USE_BREAK_ISR
+ if (smc->os.hwm.leave_isr) {
+ break ; /* leave fddi_isr */
+ }
+#endif
+
+ /* NOTE: when the isr is left, no rx is pending */
+ } /* end of interrupt source polling loop */
+
+#ifdef USE_BREAK_ISR
+ if (smc->os.hwm.leave_isr && force_irq) {
+ smt_force_irq(smc) ;
+ }
+#endif
+ smc->os.hwm.isr_flag = FALSE ;
+ NDD_TRACE("CH0E",0,0,0) ;
+}
+
+
+/*
+ -------------------------------------------------------------
+ RECEIVE FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+#ifndef NDIS_OS2
+/*
+ * BEGIN_MANUAL_ENTRY(mac_drv_rx_mode)
+ * void mac_drv_rx_mode(smc,mode)
+ *
+ * function DOWNCALL (fplus.c)
+ * Corresponding to the parameter mode, the operating system
+ * dependent module can activate several receive modes.
+ *
+ * para mode = 1: RX_ENABLE_ALLMULTI enable all multicasts
+ * = 2: RX_DISABLE_ALLMULTI disable "enable all multicasts"
+ * = 3: RX_ENABLE_PROMISC enable promiscuous
+ * = 4: RX_DISABLE_PROMISC disable promiscuous
+ * = 5: RX_ENABLE_NSA enable rec. of all NSA frames
+ * (disabled after 'driver reset' & 'set station address')
+ * = 6: RX_DISABLE_NSA disable rec. of all NSA frames
+ *
+ * = 21: RX_ENABLE_PASS_SMT ( see description )
+ * = 22: RX_DISABLE_PASS_SMT ( " " )
+ * = 23: RX_ENABLE_PASS_NSA ( " " )
+ * = 24: RX_DISABLE_PASS_NSA ( " " )
+ * = 25: RX_ENABLE_PASS_DB ( " " )
+ * = 26: RX_DISABLE_PASS_DB ( " " )
+ * = 27: RX_DISABLE_PASS_ALL ( " " )
+ * = 28: RX_DISABLE_LLC_PROMISC ( " " )
+ * = 29: RX_ENABLE_LLC_PROMISC ( " " )
+ *
+ *
+ * RX_ENABLE_PASS_SMT / RX_DISABLE_PASS_SMT
+ *
+ * If the operating system dependent module activates the
+ * mode RX_ENABLE_PASS_SMT, the hardware module
+ * duplicates all SMT frames with the frame control
+ * FC_SMT_INFO and passes them to the LLC receive channel
+ * by calling mac_drv_rx_init.
+ * The SMT Frames which are sent by the local SMT and the NSA
+ * frames whose A- and C-Indicator is not set are also duplicated
+ * and passed.
+ * The receive mode RX_DISABLE_PASS_SMT disables the passing
+ * of SMT frames.
+ *
+ * RX_ENABLE_PASS_NSA / RX_DISABLE_PASS_NSA
+ *
+ * If the operating system dependent module activates the
+ * mode RX_ENABLE_PASS_NSA, the hardware module
+ * duplicates all NSA frames with frame control FC_SMT_NSA
+ * and a set A-Indicator and passed them to the LLC
+ * receive channel by calling mac_drv_rx_init.
+ * All NSA Frames which are sent by the local SMT
+ * are also duplicated and passed.
+ * The receive mode RX_DISABLE_PASS_NSA disables the passing
+ * of NSA frames with the A- or C-Indicator set.
+ *
+ * NOTE: For fear that the hardware module receives NSA frames with
+ * a reset A-Indicator, the operating system dependent module
+ * has to call mac_drv_rx_mode with the mode RX_ENABLE_NSA
+ * before activate the RX_ENABLE_PASS_NSA mode and after every
+ * 'driver reset' and 'set station address'.
+ *
+ * RX_ENABLE_PASS_DB / RX_DISABLE_PASS_DB
+ *
+ * If the operating system dependent module activates the
+ * mode RX_ENABLE_PASS_DB, direct BEACON frames
+ * (FC_BEACON frame control) are passed to the LLC receive
+ * channel by mac_drv_rx_init.
+ * The receive mode RX_DISABLE_PASS_DB disables the passing
+ * of direct BEACON frames.
+ *
+ * RX_DISABLE_PASS_ALL
+ *
+ * Disables all special receives modes. It is equal to
+ * call mac_drv_set_rx_mode successively with the
+ * parameters RX_DISABLE_NSA, RX_DISABLE_PASS_SMT,
+ * RX_DISABLE_PASS_NSA and RX_DISABLE_PASS_DB.
+ *
+ * RX_ENABLE_LLC_PROMISC
+ *
+ * (default) all received LLC frames and all SMT/NSA/DBEACON
+ * frames depending on the attitude of the flags
+ * PASS_SMT/PASS_NSA/PASS_DBEACON will be delivered to the
+ * LLC layer
+ *
+ * RX_DISABLE_LLC_PROMISC
+ *
+ * all received SMT/NSA/DBEACON frames depending on the
+ * attitude of the flags PASS_SMT/PASS_NSA/PASS_DBEACON
+ * will be delivered to the LLC layer.
+ * all received LLC frames with a directed address, Multicast
+ * or Broadcast address will be delivered to the LLC
+ * layer too.
+ *
+ * END_MANUAL_ENTRY
+ */
+void mac_drv_rx_mode(struct s_smc *smc, int mode)
+{
+ switch(mode) {
+ case RX_ENABLE_PASS_SMT:
+ smc->os.hwm.pass_SMT = TRUE ;
+ break ;
+ case RX_DISABLE_PASS_SMT:
+ smc->os.hwm.pass_SMT = FALSE ;
+ break ;
+ case RX_ENABLE_PASS_NSA:
+ smc->os.hwm.pass_NSA = TRUE ;
+ break ;
+ case RX_DISABLE_PASS_NSA:
+ smc->os.hwm.pass_NSA = FALSE ;
+ break ;
+ case RX_ENABLE_PASS_DB:
+ smc->os.hwm.pass_DB = TRUE ;
+ break ;
+ case RX_DISABLE_PASS_DB:
+ smc->os.hwm.pass_DB = FALSE ;
+ break ;
+ case RX_DISABLE_PASS_ALL:
+ smc->os.hwm.pass_SMT = smc->os.hwm.pass_NSA = FALSE ;
+ smc->os.hwm.pass_DB = FALSE ;
+ smc->os.hwm.pass_llc_promisc = TRUE ;
+ mac_set_rx_mode(smc,RX_DISABLE_NSA) ;
+ break ;
+ case RX_DISABLE_LLC_PROMISC:
+ smc->os.hwm.pass_llc_promisc = FALSE ;
+ break ;
+ case RX_ENABLE_LLC_PROMISC:
+ smc->os.hwm.pass_llc_promisc = TRUE ;
+ break ;
+ case RX_ENABLE_ALLMULTI:
+ case RX_DISABLE_ALLMULTI:
+ case RX_ENABLE_PROMISC:
+ case RX_DISABLE_PROMISC:
+ case RX_ENABLE_NSA:
+ case RX_DISABLE_NSA:
+ default:
+ mac_set_rx_mode(smc,mode) ;
+ break ;
+ }
+}
+#endif /* ifndef NDIS_OS2 */
+
+/*
+ * process receive queue
+ */
+void process_receive(struct s_smc *smc)
+{
+ int i ;
+ int n ;
+ int frag_count ; /* number of RxDs of the curr rx buf */
+ int used_frags ; /* number of RxDs of the curr frame */
+ struct s_smt_rx_queue *queue ; /* points to the queue ctl struct */
+ struct s_smt_fp_rxd volatile *r ; /* rxd pointer */
+ struct s_smt_fp_rxd volatile *rxd ; /* first rxd of rx frame */
+ u_long rbctrl ; /* receive buffer control word */
+ u_long rfsw ; /* receive frame status word */
+ u_short rx_used ;
+ u_char far *virt ;
+ char far *data ;
+ SMbuf *mb ;
+ u_char fc ; /* Frame control */
+ int len ; /* Frame length */
+
+ smc->os.hwm.detec_count = 0 ;
+ queue = smc->hw.fp.rx[QUEUE_R1] ;
+ NDD_TRACE("RHxB",0,0,0) ;
+ for ( ; ; ) {
+ r = queue->rx_curr_get ;
+ rx_used = queue->rx_used ;
+ frag_count = 0 ;
+
+#ifdef USE_BREAK_ISR
+ if (smc->os.hwm.leave_isr) {
+ goto rx_end ;
+ }
+#endif
+#ifdef NDIS_OS2
+ if (offDepth) {
+ smc->os.hwm.rx_break = 1 ;
+ goto rx_end ;
+ }
+ smc->os.hwm.rx_break = 0 ;
+#endif
+#ifdef ODI2
+ if (smc->os.hwm.rx_break) {
+ goto rx_end ;
+ }
+#endif
+ n = 0 ;
+ do {
+ DB_RX("Check RxD %x for OWN and EOF",(void *)r,0,5) ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ rbctrl = le32_to_cpu(CR_READ(r->rxd_rbctrl));
+
+ if (rbctrl & BMU_OWN) {
+ NDD_TRACE("RHxE",r,rfsw,rbctrl) ;
+ DB_RX("End of RxDs",0,0,4) ;
+ goto rx_end ;
+ }
+ /*
+ * out of RxD detection
+ */
+ if (!rx_used) {
+ SK_BREAK() ;
+ SMT_PANIC(smc,HWM_E0009,HWM_E0009_MSG) ;
+ /* Either we don't have an RxD or all
+ * RxDs are filled. Therefore it's allowed
+ * for to set the STOPPED flag */
+ smc->hw.hw_state = STOPPED ;
+ mac_drv_clear_rx_queue(smc) ;
+ smc->hw.hw_state = STARTED ;
+ mac_drv_fill_rxd(smc) ;
+ smc->os.hwm.detec_count = 0 ;
+ goto rx_end ;
+ }
+ rfsw = le32_to_cpu(r->rxd_rfsw) ;
+ if ((rbctrl & BMU_STF) != ((rbctrl & BMU_ST_BUF) <<5)) {
+ /*
+ * The BMU_STF bit is deleted, 1 frame is
+ * placed into more than 1 rx buffer
+ *
+ * skip frame by setting the rx len to 0
+ *
+ * if fragment count == 0
+ * The missing STF bit belongs to the
+ * current frame, search for the
+ * EOF bit to complete the frame
+ * else
+ * the fragment belongs to the next frame,
+ * exit the loop and process the frame
+ */
+ SK_BREAK() ;
+ rfsw = 0 ;
+ if (frag_count) {
+ break ;
+ }
+ }
+ n += rbctrl & 0xffff ;
+ r = r->rxd_next ;
+ frag_count++ ;
+ rx_used-- ;
+ } while (!(rbctrl & BMU_EOF)) ;
+ used_frags = frag_count ;
+ DB_RX("EOF set in RxD, used_frags = %d ",used_frags,0,5) ;
+
+ /* may be next 2 DRV_BUF_FLUSH() can be skipped, because */
+ /* BMU_ST_BUF will not be changed by the ASIC */
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ while (rx_used && !(r->rxd_rbctrl & cpu_to_le32(BMU_ST_BUF))) {
+ DB_RX("Check STF bit in %x",(void *)r,0,5) ;
+ r = r->rxd_next ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ frag_count++ ;
+ rx_used-- ;
+ }
+ DB_RX("STF bit found",0,0,5) ;
+
+ /*
+ * The received frame is finished for the process receive
+ */
+ rxd = queue->rx_curr_get ;
+ queue->rx_curr_get = r ;
+ queue->rx_free += frag_count ;
+ queue->rx_used = rx_used ;
+
+ /*
+ * ASIC Errata no. 7 (STF - Bit Bug)
+ */
+ rxd->rxd_rbctrl &= cpu_to_le32(~BMU_STF) ;
+
+ for (r=rxd, i=frag_count ; i ; r=r->rxd_next, i--){
+ DB_RX("dma_complete for RxD %x",(void *)r,0,5) ;
+ dma_complete(smc,(union s_fp_descr volatile *)r,DMA_WR);
+ }
+ smc->hw.fp.err_stats.err_valid++ ;
+ smc->mib.m[MAC0].fddiMACCopied_Ct++ ;
+
+ /* the length of the data including the FC */
+ len = (rfsw & RD_LENGTH) - 4 ;
+
+ DB_RX("frame length = %d",len,0,4) ;
+ /*
+ * check the frame_length and all error flags
+ */
+ if (rfsw & (RX_MSRABT|RX_FS_E|RX_FS_CRC|RX_FS_IMPL)){
+ if (rfsw & RD_S_MSRABT) {
+ DB_RX("Frame aborted by the FORMAC",0,0,2) ;
+ smc->hw.fp.err_stats.err_abort++ ;
+ }
+ /*
+ * check frame status
+ */
+ if (rfsw & RD_S_SEAC2) {
+ DB_RX("E-Indicator set",0,0,2) ;
+ smc->hw.fp.err_stats.err_e_indicator++ ;
+ }
+ if (rfsw & RD_S_SFRMERR) {
+ DB_RX("CRC error",0,0,2) ;
+ smc->hw.fp.err_stats.err_crc++ ;
+ }
+ if (rfsw & RX_FS_IMPL) {
+ DB_RX("Implementer frame",0,0,2) ;
+ smc->hw.fp.err_stats.err_imp_frame++ ;
+ }
+ goto abort_frame ;
+ }
+ if (len > FDDI_RAW_MTU-4) {
+ DB_RX("Frame too long error",0,0,2) ;
+ smc->hw.fp.err_stats.err_too_long++ ;
+ goto abort_frame ;
+ }
+ /*
+ * SUPERNET 3 Bug: FORMAC delivers status words
+ * of aborded frames to the BMU
+ */
+ if (len <= 4) {
+ DB_RX("Frame length = 0",0,0,2) ;
+ goto abort_frame ;
+ }
+
+ if (len != (n-4)) {
+ DB_RX("BMU: rx len differs: [%d:%d]",len,n,4);
+ smc->os.hwm.rx_len_error++ ;
+ goto abort_frame ;
+ }
+
+ /*
+ * Check SA == MA
+ */
+ virt = (u_char far *) rxd->rxd_virt ;
+ DB_RX("FC = %x",*virt,0,2) ;
+ if (virt[12] == MA[5] &&
+ virt[11] == MA[4] &&
+ virt[10] == MA[3] &&
+ virt[9] == MA[2] &&
+ virt[8] == MA[1] &&
+ (virt[7] & ~GROUP_ADDR_BIT) == MA[0]) {
+ goto abort_frame ;
+ }
+
+ /*
+ * test if LLC frame
+ */
+ if (rfsw & RX_FS_LLC) {
+ /*
+ * if pass_llc_promisc is disable
+ * if DA != Multicast or Broadcast or DA!=MA
+ * abort the frame
+ */
+ if (!smc->os.hwm.pass_llc_promisc) {
+ if(!(virt[1] & GROUP_ADDR_BIT)) {
+ if (virt[6] != MA[5] ||
+ virt[5] != MA[4] ||
+ virt[4] != MA[3] ||
+ virt[3] != MA[2] ||
+ virt[2] != MA[1] ||
+ virt[1] != MA[0]) {
+ DB_RX("DA != MA and not multi- or broadcast",0,0,2) ;
+ goto abort_frame ;
+ }
+ }
+ }
+
+ /*
+ * LLC frame received
+ */
+ DB_RX("LLC - receive",0,0,4) ;
+ mac_drv_rx_complete(smc,rxd,frag_count,len) ;
+ }
+ else {
+ if (!(mb = smt_get_mbuf(smc))) {
+ smc->hw.fp.err_stats.err_no_buf++ ;
+ DB_RX("No SMbuf; receive terminated",0,0,4) ;
+ goto abort_frame ;
+ }
+ data = smtod(mb,char *) - 1 ;
+
+ /*
+ * copy the frame into a SMT_MBuf
+ */
+#ifdef USE_OS_CPY
+ hwm_cpy_rxd2mb(rxd,data,len) ;
+#else
+ for (r=rxd, i=used_frags ; i ; r=r->rxd_next, i--){
+ n = le32_to_cpu(r->rxd_rbctrl) & RD_LENGTH ;
+ DB_RX("cp SMT frame to mb: len = %d",n,0,6) ;
+ memcpy(data,r->rxd_virt,n) ;
+ data += n ;
+ }
+ data = smtod(mb,char *) - 1 ;
+#endif
+ fc = *(char *)mb->sm_data = *data ;
+ mb->sm_len = len - 1 ; /* len - fc */
+ data++ ;
+
+ /*
+ * SMT frame received
+ */
+ switch(fc) {
+ case FC_SMT_INFO :
+ smc->hw.fp.err_stats.err_smt_frame++ ;
+ DB_RX("SMT frame received ",0,0,5) ;
+
+ if (smc->os.hwm.pass_SMT) {
+ DB_RX("pass SMT frame ",0,0,5) ;
+ mac_drv_rx_complete(smc, rxd,
+ frag_count,len) ;
+ }
+ else {
+ DB_RX("requeue RxD",0,0,5) ;
+ mac_drv_requeue_rxd(smc,rxd,frag_count);
+ }
+
+ smt_received_pack(smc,mb,(int)(rfsw>>25)) ;
+ break ;
+ case FC_SMT_NSA :
+ smc->hw.fp.err_stats.err_smt_frame++ ;
+ DB_RX("SMT frame received ",0,0,5) ;
+
+ /* if pass_NSA set pass the NSA frame or */
+ /* pass_SMT set and the A-Indicator */
+ /* is not set, pass the NSA frame */
+ if (smc->os.hwm.pass_NSA ||
+ (smc->os.hwm.pass_SMT &&
+ !(rfsw & A_INDIC))) {
+ DB_RX("pass SMT frame ",0,0,5) ;
+ mac_drv_rx_complete(smc, rxd,
+ frag_count,len) ;
+ }
+ else {
+ DB_RX("requeue RxD",0,0,5) ;
+ mac_drv_requeue_rxd(smc,rxd,frag_count);
+ }
+
+ smt_received_pack(smc,mb,(int)(rfsw>>25)) ;
+ break ;
+ case FC_BEACON :
+ if (smc->os.hwm.pass_DB) {
+ DB_RX("pass DB frame ",0,0,5) ;
+ mac_drv_rx_complete(smc, rxd,
+ frag_count,len) ;
+ }
+ else {
+ DB_RX("requeue RxD",0,0,5) ;
+ mac_drv_requeue_rxd(smc,rxd,frag_count);
+ }
+ smt_free_mbuf(smc,mb) ;
+ break ;
+ default :
+ /*
+ * unknown FC abord the frame
+ */
+ DB_RX("unknown FC error",0,0,2) ;
+ smt_free_mbuf(smc,mb) ;
+ DB_RX("requeue RxD",0,0,5) ;
+ mac_drv_requeue_rxd(smc,rxd,frag_count) ;
+ if ((fc & 0xf0) == FC_MAC)
+ smc->hw.fp.err_stats.err_mac_frame++ ;
+ else
+ smc->hw.fp.err_stats.err_imp_frame++ ;
+
+ break ;
+ }
+ }
+
+ DB_RX("next RxD is %x ",queue->rx_curr_get,0,3) ;
+ NDD_TRACE("RHx1",queue->rx_curr_get,0,0) ;
+
+ continue ;
+ /*--------------------------------------------------------------------*/
+abort_frame:
+ DB_RX("requeue RxD",0,0,5) ;
+ mac_drv_requeue_rxd(smc,rxd,frag_count) ;
+
+ DB_RX("next RxD is %x ",queue->rx_curr_get,0,3) ;
+ NDD_TRACE("RHx2",queue->rx_curr_get,0,0) ;
+ }
+rx_end:
+#ifdef ALL_RX_COMPLETE
+ mac_drv_all_receives_complete(smc) ;
+#endif
+ return ; /* lint bug: needs return detect end of function */
+}
+
+static void smt_to_llc(struct s_smc *smc, SMbuf *mb)
+{
+ u_char fc ;
+
+ DB_RX("send a queued frame to the llc layer",0,0,4) ;
+ smc->os.hwm.r.len = mb->sm_len ;
+ smc->os.hwm.r.mb_pos = smtod(mb,char *) ;
+ fc = *smc->os.hwm.r.mb_pos ;
+ (void)mac_drv_rx_init(smc,(int)mb->sm_len,(int)fc,
+ smc->os.hwm.r.mb_pos,(int)mb->sm_len) ;
+ smt_free_mbuf(smc,mb) ;
+}
+
+/*
+ * BEGIN_MANUAL_ENTRY(hwm_rx_frag)
+ * void hwm_rx_frag(smc,virt,phys,len,frame_status)
+ *
+ * function MACRO (hardware module, hwmtm.h)
+ * This function calls dma_master for preparing the
+ * system hardware for the DMA transfer and initializes
+ * the current RxD with the length and the physical and
+ * virtual address of the fragment. Furthermore, it sets the
+ * STF and EOF bits depending on the frame status byte,
+ * switches the OWN flag of the RxD, so that it is owned by the
+ * adapter and issues an rx_start.
+ *
+ * para virt virtual pointer to the fragment
+ * len the length of the fragment
+ * frame_status status of the frame, see design description
+ *
+ * NOTE: It is possible to call this function with a fragment length
+ * of zero.
+ *
+ * END_MANUAL_ENTRY
+ */
+void hwm_rx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
+ int frame_status)
+{
+ struct s_smt_fp_rxd volatile *r ;
+ __le32 rbctrl;
+
+ NDD_TRACE("RHfB",virt,len,frame_status) ;
+ DB_RX("hwm_rx_frag: len = %d, frame_status = %x\n",len,frame_status,2) ;
+ r = smc->hw.fp.rx_q[QUEUE_R1].rx_curr_put ;
+ r->rxd_virt = virt ;
+ r->rxd_rbadr = cpu_to_le32(phys) ;
+ rbctrl = cpu_to_le32( (((__u32)frame_status &
+ (FIRST_FRAG|LAST_FRAG))<<26) |
+ (((u_long) frame_status & FIRST_FRAG) << 21) |
+ BMU_OWN | BMU_CHECK | BMU_EN_IRQ_EOF | len) ;
+ r->rxd_rbctrl = rbctrl ;
+
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
+ outpd(ADDR(B0_R1_CSR),CSR_START) ;
+ smc->hw.fp.rx_q[QUEUE_R1].rx_free-- ;
+ smc->hw.fp.rx_q[QUEUE_R1].rx_used++ ;
+ smc->hw.fp.rx_q[QUEUE_R1].rx_curr_put = r->rxd_next ;
+ NDD_TRACE("RHfE",r,le32_to_cpu(r->rxd_rbadr),0) ;
+}
+
+/*
+ * BEGINN_MANUAL_ENTRY(mac_drv_clear_rx_queue)
+ *
+ * void mac_drv_clear_rx_queue(smc)
+ * struct s_smc *smc ;
+ *
+ * function DOWNCALL (hardware module, hwmtm.c)
+ * mac_drv_clear_rx_queue is called by the OS-specific module
+ * after it has issued a card_stop.
+ * In this case, the frames in the receive queue are obsolete and
+ * should be removed. For removing mac_drv_clear_rx_queue
+ * calls dma_master for each RxD and mac_drv_clear_rxd for each
+ * receive buffer.
+ *
+ * NOTE: calling sequence card_stop:
+ * CLI_FBI(), card_stop(),
+ * mac_drv_clear_tx_queue(), mac_drv_clear_rx_queue(),
+ *
+ * NOTE: The caller is responsible that the BMUs are idle
+ * when this function is called.
+ *
+ * END_MANUAL_ENTRY
+ */
+void mac_drv_clear_rx_queue(struct s_smc *smc)
+{
+ struct s_smt_fp_rxd volatile *r ;
+ struct s_smt_fp_rxd volatile *next_rxd ;
+ struct s_smt_rx_queue *queue ;
+ int frag_count ;
+ int i ;
+
+ if (smc->hw.hw_state != STOPPED) {
+ SK_BREAK() ;
+ SMT_PANIC(smc,HWM_E0012,HWM_E0012_MSG) ;
+ return ;
+ }
+
+ queue = smc->hw.fp.rx[QUEUE_R1] ;
+ DB_RX("clear_rx_queue",0,0,5) ;
+
+ /*
+ * dma_complete and mac_drv_clear_rxd for all RxDs / receive buffers
+ */
+ r = queue->rx_curr_get ;
+ while (queue->rx_used) {
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ DB_RX("switch OWN bit of RxD 0x%x ",r,0,5) ;
+ r->rxd_rbctrl &= ~cpu_to_le32(BMU_OWN) ;
+ frag_count = 1 ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
+ r = r->rxd_next ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ while (r != queue->rx_curr_put &&
+ !(r->rxd_rbctrl & cpu_to_le32(BMU_ST_BUF))) {
+ DB_RX("Check STF bit in %x",(void *)r,0,5) ;
+ r->rxd_rbctrl &= ~cpu_to_le32(BMU_OWN) ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORDEV) ;
+ r = r->rxd_next ;
+ DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
+ frag_count++ ;
+ }
+ DB_RX("STF bit found",0,0,5) ;
+ next_rxd = r ;
+
+ for (r=queue->rx_curr_get,i=frag_count; i ; r=r->rxd_next,i--){
+ DB_RX("dma_complete for RxD %x",(void *)r,0,5) ;
+ dma_complete(smc,(union s_fp_descr volatile *)r,DMA_WR);
+ }
+
+ DB_RX("mac_drv_clear_rxd: RxD %x frag_count %d ",
+ (void *)queue->rx_curr_get,frag_count,5) ;
+ mac_drv_clear_rxd(smc,queue->rx_curr_get,frag_count) ;
+
+ queue->rx_curr_get = next_rxd ;
+ queue->rx_used -= frag_count ;
+ queue->rx_free += frag_count ;
+ }
+}
+
+
+/*
+ -------------------------------------------------------------
+ SEND FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+/*
+ * BEGIN_MANUAL_ENTRY(hwm_tx_init)
+ * int hwm_tx_init(smc,fc,frag_count,frame_len,frame_status)
+ *
+ * function DOWN_CALL (hardware module, hwmtm.c)
+ * hwm_tx_init checks if the frame can be sent through the
+ * corresponding send queue.
+ *
+ * para fc the frame control. To determine through which
+ * send queue the frame should be transmitted.
+ * 0x50 - 0x57: asynchronous LLC frame
+ * 0xD0 - 0xD7: synchronous LLC frame
+ * 0x41, 0x4F: SMT frame to the network
+ * 0x42: SMT frame to the network and to the local SMT
+ * 0x43: SMT frame to the local SMT
+ * frag_count count of the fragments for this frame
+ * frame_len length of the frame
+ * frame_status status of the frame, the send queue bit is already
+ * specified
+ *
+ * return frame_status
+ *
+ * END_MANUAL_ENTRY
+ */
+int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, int frame_len,
+ int frame_status)
+{
+ NDD_TRACE("THiB",fc,frag_count,frame_len) ;
+ smc->os.hwm.tx_p = smc->hw.fp.tx[frame_status & QUEUE_A0] ;
+ smc->os.hwm.tx_descr = TX_DESCRIPTOR | (((u_long)(frame_len-1)&3)<<27) ;
+ smc->os.hwm.tx_len = frame_len ;
+ DB_TX("hwm_tx_init: fc = %x, len = %d",fc,frame_len,3) ;
+ if ((fc & ~(FC_SYNC_BIT|FC_LLC_PRIOR)) == FC_ASYNC_LLC) {
+ frame_status |= LAN_TX ;
+ }
+ else {
+ switch (fc) {
+ case FC_SMT_INFO :
+ case FC_SMT_NSA :
+ frame_status |= LAN_TX ;
+ break ;
+ case FC_SMT_LOC :
+ frame_status |= LOC_TX ;
+ break ;
+ case FC_SMT_LAN_LOC :
+ frame_status |= LAN_TX | LOC_TX ;
+ break ;
+ default :
+ SMT_PANIC(smc,HWM_E0010,HWM_E0010_MSG) ;
+ }
+ }
+ if (!smc->hw.mac_ring_is_up) {
+ frame_status &= ~LAN_TX ;
+ frame_status |= RING_DOWN ;
+ DB_TX("Ring is down: terminate LAN_TX",0,0,2) ;
+ }
+ if (frag_count > smc->os.hwm.tx_p->tx_free) {
+#ifndef NDIS_OS2
+ mac_drv_clear_txd(smc) ;
+ if (frag_count > smc->os.hwm.tx_p->tx_free) {
+ DB_TX("Out of TxDs, terminate LAN_TX",0,0,2) ;
+ frame_status &= ~LAN_TX ;
+ frame_status |= OUT_OF_TXD ;
+ }
+#else
+ DB_TX("Out of TxDs, terminate LAN_TX",0,0,2) ;
+ frame_status &= ~LAN_TX ;
+ frame_status |= OUT_OF_TXD ;
+#endif
+ }
+ DB_TX("frame_status = %x",frame_status,0,3) ;
+ NDD_TRACE("THiE",frame_status,smc->os.hwm.tx_p->tx_free,0) ;
+ return frame_status;
+}
+
+/*
+ * BEGIN_MANUAL_ENTRY(hwm_tx_frag)
+ * void hwm_tx_frag(smc,virt,phys,len,frame_status)
+ *
+ * function DOWNCALL (hardware module, hwmtm.c)
+ * If the frame should be sent to the LAN, this function calls
+ * dma_master, fills the current TxD with the virtual and the
+ * physical address, sets the STF and EOF bits dependent on
+ * the frame status, and requests the BMU to start the
+ * transmit.
+ * If the frame should be sent to the local SMT, an SMT_MBuf
+ * is allocated if the FIRST_FRAG bit is set in the frame_status.
+ * The fragment of the frame is copied into the SMT MBuf.
+ * The function smt_received_pack is called if the LAST_FRAG
+ * bit is set in the frame_status word.
+ *
+ * para virt virtual pointer to the fragment
+ * len the length of the fragment
+ * frame_status status of the frame, see design description
+ *
+ * return nothing returned, no parameter is modified
+ *
+ * NOTE: It is possible to invoke this macro with a fragment length
+ * of zero.
+ *
+ * END_MANUAL_ENTRY
+ */
+void hwm_tx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
+ int frame_status)
+{
+ struct s_smt_fp_txd volatile *t ;
+ struct s_smt_tx_queue *queue ;
+ __le32 tbctrl ;
+
+ queue = smc->os.hwm.tx_p ;
+
+ NDD_TRACE("THfB",virt,len,frame_status) ;
+ /* Bug fix: AF / May 31 1999 (#missing)
+ * snmpinfo problem reported by IBM is caused by invalid
+ * t-pointer (txd) if LAN_TX is not set but LOC_TX only.
+ * Set: t = queue->tx_curr_put here !
+ */
+ t = queue->tx_curr_put ;
+
+ DB_TX("hwm_tx_frag: len = %d, frame_status = %x ",len,frame_status,2) ;
+ if (frame_status & LAN_TX) {
+ /* '*t' is already defined */
+ DB_TX("LAN_TX: TxD = %x, virt = %x ",t,virt,3) ;
+ t->txd_virt = virt ;
+ t->txd_txdscr = cpu_to_le32(smc->os.hwm.tx_descr) ;
+ t->txd_tbadr = cpu_to_le32(phys) ;
+ tbctrl = cpu_to_le32((((__u32)frame_status &
+ (FIRST_FRAG|LAST_FRAG|EN_IRQ_EOF))<< 26) |
+ BMU_OWN|BMU_CHECK |len) ;
+ t->txd_tbctrl = tbctrl ;
+
+#ifndef AIX
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
+ outpd(queue->tx_bmu_ctl,CSR_START) ;
+#else /* ifndef AIX */
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
+ if (frame_status & QUEUE_A0) {
+ outpd(ADDR(B0_XA_CSR),CSR_START) ;
+ }
+ else {
+ outpd(ADDR(B0_XS_CSR),CSR_START) ;
+ }
+#endif
+ queue->tx_free-- ;
+ queue->tx_used++ ;
+ queue->tx_curr_put = t->txd_next ;
+ if (frame_status & LAST_FRAG) {
+ smc->mib.m[MAC0].fddiMACTransmit_Ct++ ;
+ }
+ }
+ if (frame_status & LOC_TX) {
+ DB_TX("LOC_TX: ",0,0,3) ;
+ if (frame_status & FIRST_FRAG) {
+ if(!(smc->os.hwm.tx_mb = smt_get_mbuf(smc))) {
+ smc->hw.fp.err_stats.err_no_buf++ ;
+ DB_TX("No SMbuf; transmit terminated",0,0,4) ;
+ }
+ else {
+ smc->os.hwm.tx_data =
+ smtod(smc->os.hwm.tx_mb,char *) - 1 ;
+#ifdef USE_OS_CPY
+#ifdef PASS_1ST_TXD_2_TX_COMP
+ hwm_cpy_txd2mb(t,smc->os.hwm.tx_data,
+ smc->os.hwm.tx_len) ;
+#endif
+#endif
+ }
+ }
+ if (smc->os.hwm.tx_mb) {
+#ifndef USE_OS_CPY
+ DB_TX("copy fragment into MBuf ",0,0,3) ;
+ memcpy(smc->os.hwm.tx_data,virt,len) ;
+ smc->os.hwm.tx_data += len ;
+#endif
+ if (frame_status & LAST_FRAG) {
+#ifdef USE_OS_CPY
+#ifndef PASS_1ST_TXD_2_TX_COMP
+ /*
+ * hwm_cpy_txd2mb(txd,data,len) copies 'len'
+ * bytes from the virtual pointer in 'rxd'
+ * to 'data'. The virtual pointer of the
+ * os-specific tx-buffer should be written
+ * in the LAST txd.
+ */
+ hwm_cpy_txd2mb(t,smc->os.hwm.tx_data,
+ smc->os.hwm.tx_len) ;
+#endif /* nPASS_1ST_TXD_2_TX_COMP */
+#endif /* USE_OS_CPY */
+ smc->os.hwm.tx_data =
+ smtod(smc->os.hwm.tx_mb,char *) - 1 ;
+ *(char *)smc->os.hwm.tx_mb->sm_data =
+ *smc->os.hwm.tx_data ;
+ smc->os.hwm.tx_data++ ;
+ smc->os.hwm.tx_mb->sm_len =
+ smc->os.hwm.tx_len - 1 ;
+ DB_TX("pass LLC frame to SMT ",0,0,3) ;
+ smt_received_pack(smc,smc->os.hwm.tx_mb,
+ RD_FS_LOCAL) ;
+ }
+ }
+ }
+ NDD_TRACE("THfE",t,queue->tx_free,0) ;
+}
+
+
+/*
+ * queues a receive for later send
+ */
+static void queue_llc_rx(struct s_smc *smc, SMbuf *mb)
+{
+ DB_GEN("queue_llc_rx: mb = %x",(void *)mb,0,4) ;
+ smc->os.hwm.queued_rx_frames++ ;
+ mb->sm_next = (SMbuf *)NULL ;
+ if (smc->os.hwm.llc_rx_pipe == NULL) {
+ smc->os.hwm.llc_rx_pipe = mb ;
+ }
+ else {
+ smc->os.hwm.llc_rx_tail->sm_next = mb ;
+ }
+ smc->os.hwm.llc_rx_tail = mb ;
+
+ /*
+ * force an timer IRQ to receive the data
+ */
+ if (!smc->os.hwm.isr_flag) {
+ smt_force_irq(smc) ;
+ }
+}
+
+/*
+ * get a SMbuf from the llc_rx_queue
+ */
+static SMbuf *get_llc_rx(struct s_smc *smc)
+{
+ SMbuf *mb ;
+
+ if ((mb = smc->os.hwm.llc_rx_pipe)) {
+ smc->os.hwm.queued_rx_frames-- ;
+ smc->os.hwm.llc_rx_pipe = mb->sm_next ;
+ }
+ DB_GEN("get_llc_rx: mb = 0x%x",(void *)mb,0,4) ;
+ return mb;
+}
+
+/*
+ * queues a transmit SMT MBuf during the time were the MBuf is
+ * queued the TxD ring
+ */
+static void queue_txd_mb(struct s_smc *smc, SMbuf *mb)
+{
+ DB_GEN("_rx: queue_txd_mb = %x",(void *)mb,0,4) ;
+ smc->os.hwm.queued_txd_mb++ ;
+ mb->sm_next = (SMbuf *)NULL ;
+ if (smc->os.hwm.txd_tx_pipe == NULL) {
+ smc->os.hwm.txd_tx_pipe = mb ;
+ }
+ else {
+ smc->os.hwm.txd_tx_tail->sm_next = mb ;
+ }
+ smc->os.hwm.txd_tx_tail = mb ;
+}
+
+/*
+ * get a SMbuf from the txd_tx_queue
+ */
+static SMbuf *get_txd_mb(struct s_smc *smc)
+{
+ SMbuf *mb ;
+
+ if ((mb = smc->os.hwm.txd_tx_pipe)) {
+ smc->os.hwm.queued_txd_mb-- ;
+ smc->os.hwm.txd_tx_pipe = mb->sm_next ;
+ }
+ DB_GEN("get_txd_mb: mb = 0x%x",(void *)mb,0,4) ;
+ return mb;
+}
+
+/*
+ * SMT Send function
+ */
+void smt_send_mbuf(struct s_smc *smc, SMbuf *mb, int fc)
+{
+ char far *data ;
+ int len ;
+ int n ;
+ int i ;
+ int frag_count ;
+ int frame_status ;
+ SK_LOC_DECL(char far,*virt[3]) ;
+ int frag_len[3] ;
+ struct s_smt_tx_queue *queue ;
+ struct s_smt_fp_txd volatile *t ;
+ u_long phys ;
+ __le32 tbctrl;
+
+ NDD_TRACE("THSB",mb,fc,0) ;
+ DB_TX("smt_send_mbuf: mb = 0x%x, fc = 0x%x",mb,fc,4) ;
+
+ mb->sm_off-- ; /* set to fc */
+ mb->sm_len++ ; /* + fc */
+ data = smtod(mb,char *) ;
+ *data = fc ;
+ if (fc == FC_SMT_LOC)
+ *data = FC_SMT_INFO ;
+
+ /*
+ * determine the frag count and the virt addresses of the frags
+ */
+ frag_count = 0 ;
+ len = mb->sm_len ;
+ while (len) {
+ n = SMT_PAGESIZE - ((long)data & (SMT_PAGESIZE-1)) ;
+ if (n >= len) {
+ n = len ;
+ }
+ DB_TX("frag: virt/len = 0x%x/%d ",(void *)data,n,5) ;
+ virt[frag_count] = data ;
+ frag_len[frag_count] = n ;
+ frag_count++ ;
+ len -= n ;
+ data += n ;
+ }
+
+ /*
+ * determine the frame status
+ */
+ queue = smc->hw.fp.tx[QUEUE_A0] ;
+ if (fc == FC_BEACON || fc == FC_SMT_LOC) {
+ frame_status = LOC_TX ;
+ }
+ else {
+ frame_status = LAN_TX ;
+ if ((smc->os.hwm.pass_NSA &&(fc == FC_SMT_NSA)) ||
+ (smc->os.hwm.pass_SMT &&(fc == FC_SMT_INFO)))
+ frame_status |= LOC_TX ;
+ }
+
+ if (!smc->hw.mac_ring_is_up || frag_count > queue->tx_free) {
+ frame_status &= ~LAN_TX;
+ if (frame_status) {
+ DB_TX("Ring is down: terminate LAN_TX",0,0,2) ;
+ }
+ else {
+ DB_TX("Ring is down: terminate transmission",0,0,2) ;
+ smt_free_mbuf(smc,mb) ;
+ return ;
+ }
+ }
+ DB_TX("frame_status = 0x%x ",frame_status,0,5) ;
+
+ if ((frame_status & LAN_TX) && (frame_status & LOC_TX)) {
+ mb->sm_use_count = 2 ;
+ }
+
+ if (frame_status & LAN_TX) {
+ t = queue->tx_curr_put ;
+ frame_status |= FIRST_FRAG ;
+ for (i = 0; i < frag_count; i++) {
+ DB_TX("init TxD = 0x%x",(void *)t,0,5) ;
+ if (i == frag_count-1) {
+ frame_status |= LAST_FRAG ;
+ t->txd_txdscr = cpu_to_le32(TX_DESCRIPTOR |
+ (((__u32)(mb->sm_len-1)&3) << 27)) ;
+ }
+ t->txd_virt = virt[i] ;
+ phys = dma_master(smc, (void far *)virt[i],
+ frag_len[i], DMA_RD|SMT_BUF) ;
+ t->txd_tbadr = cpu_to_le32(phys) ;
+ tbctrl = cpu_to_le32((((__u32)frame_status &
+ (FIRST_FRAG|LAST_FRAG)) << 26) |
+ BMU_OWN | BMU_CHECK | BMU_SMT_TX |frag_len[i]) ;
+ t->txd_tbctrl = tbctrl ;
+#ifndef AIX
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
+ outpd(queue->tx_bmu_ctl,CSR_START) ;
+#else
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
+ outpd(ADDR(B0_XA_CSR),CSR_START) ;
+#endif
+ frame_status &= ~FIRST_FRAG ;
+ queue->tx_curr_put = t = t->txd_next ;
+ queue->tx_free-- ;
+ queue->tx_used++ ;
+ }
+ smc->mib.m[MAC0].fddiMACTransmit_Ct++ ;
+ queue_txd_mb(smc,mb) ;
+ }
+
+ if (frame_status & LOC_TX) {
+ DB_TX("pass Mbuf to LLC queue",0,0,5) ;
+ queue_llc_rx(smc,mb) ;
+ }
+
+ /*
+ * We need to unqueue the free SMT_MBUFs here, because it may
+ * be that the SMT want's to send more than 1 frame for one down call
+ */
+ mac_drv_clear_txd(smc) ;
+ NDD_TRACE("THSE",t,queue->tx_free,frag_count) ;
+}
+
+/* BEGIN_MANUAL_ENTRY(mac_drv_clear_txd)
+ * void mac_drv_clear_txd(smc)
+ *
+ * function DOWNCALL (hardware module, hwmtm.c)
+ * mac_drv_clear_txd searches in both send queues for TxD's
+ * which were finished by the adapter. It calls dma_complete
+ * for each TxD. If the last fragment of an LLC frame is
+ * reached, it calls mac_drv_tx_complete to release the
+ * send buffer.
+ *
+ * return nothing
+ *
+ * END_MANUAL_ENTRY
+ */
+static void mac_drv_clear_txd(struct s_smc *smc)
+{
+ struct s_smt_tx_queue *queue ;
+ struct s_smt_fp_txd volatile *t1 ;
+ struct s_smt_fp_txd volatile *t2 = NULL ;
+ SMbuf *mb ;
+ u_long tbctrl ;
+ int i ;
+ int frag_count ;
+ int n ;
+
+ NDD_TRACE("THcB",0,0,0) ;
+ for (i = QUEUE_S; i <= QUEUE_A0; i++) {
+ queue = smc->hw.fp.tx[i] ;
+ t1 = queue->tx_curr_get ;
+ DB_TX("clear_txd: QUEUE = %d (0=sync/1=async)",i,0,5) ;
+
+ for ( ; ; ) {
+ frag_count = 0 ;
+
+ do {
+ DRV_BUF_FLUSH(t1,DDI_DMA_SYNC_FORCPU) ;
+ DB_TX("check OWN/EOF bit of TxD 0x%x",t1,0,5) ;
+ tbctrl = le32_to_cpu(CR_READ(t1->txd_tbctrl));
+
+ if (tbctrl & BMU_OWN || !queue->tx_used){
+ DB_TX("End of TxDs queue %d",i,0,4) ;
+ goto free_next_queue ; /* next queue */
+ }
+ t1 = t1->txd_next ;
+ frag_count++ ;
+ } while (!(tbctrl & BMU_EOF)) ;
+
+ t1 = queue->tx_curr_get ;
+ for (n = frag_count; n; n--) {
+ tbctrl = le32_to_cpu(t1->txd_tbctrl) ;
+ dma_complete(smc,
+ (union s_fp_descr volatile *) t1,
+ (int) (DMA_RD |
+ ((tbctrl & BMU_SMT_TX) >> 18))) ;
+ t2 = t1 ;
+ t1 = t1->txd_next ;
+ }
+
+ if (tbctrl & BMU_SMT_TX) {
+ mb = get_txd_mb(smc) ;
+ smt_free_mbuf(smc,mb) ;
+ }
+ else {
+#ifndef PASS_1ST_TXD_2_TX_COMP
+ DB_TX("mac_drv_tx_comp for TxD 0x%x",t2,0,4) ;
+ mac_drv_tx_complete(smc,t2) ;
+#else
+ DB_TX("mac_drv_tx_comp for TxD 0x%x",
+ queue->tx_curr_get,0,4) ;
+ mac_drv_tx_complete(smc,queue->tx_curr_get) ;
+#endif
+ }
+ queue->tx_curr_get = t1 ;
+ queue->tx_free += frag_count ;
+ queue->tx_used -= frag_count ;
+ }
+free_next_queue: ;
+ }
+ NDD_TRACE("THcE",0,0,0) ;
+}
+
+/*
+ * BEGINN_MANUAL_ENTRY(mac_drv_clear_tx_queue)
+ *
+ * void mac_drv_clear_tx_queue(smc)
+ * struct s_smc *smc ;
+ *
+ * function DOWNCALL (hardware module, hwmtm.c)
+ * mac_drv_clear_tx_queue is called from the SMT when
+ * the RMT state machine has entered the ISOLATE state.
+ * This function is also called by the os-specific module
+ * after it has called the function card_stop().
+ * In this case, the frames in the send queues are obsolete and
+ * should be removed.
+ *
+ * note calling sequence:
+ * CLI_FBI(), card_stop(),
+ * mac_drv_clear_tx_queue(), mac_drv_clear_rx_queue(),
+ *
+ * NOTE: The caller is responsible that the BMUs are idle
+ * when this function is called.
+ *
+ * END_MANUAL_ENTRY
+ */
+void mac_drv_clear_tx_queue(struct s_smc *smc)
+{
+ struct s_smt_fp_txd volatile *t ;
+ struct s_smt_tx_queue *queue ;
+ int tx_used ;
+ int i ;
+
+ if (smc->hw.hw_state != STOPPED) {
+ SK_BREAK() ;
+ SMT_PANIC(smc,HWM_E0011,HWM_E0011_MSG) ;
+ return ;
+ }
+
+ for (i = QUEUE_S; i <= QUEUE_A0; i++) {
+ queue = smc->hw.fp.tx[i] ;
+ DB_TX("clear_tx_queue: QUEUE = %d (0=sync/1=async)",i,0,5) ;
+
+ /*
+ * switch the OWN bit of all pending frames to the host
+ */
+ t = queue->tx_curr_get ;
+ tx_used = queue->tx_used ;
+ while (tx_used) {
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORCPU) ;
+ DB_TX("switch OWN bit of TxD 0x%x ",t,0,5) ;
+ t->txd_tbctrl &= ~cpu_to_le32(BMU_OWN) ;
+ DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
+ t = t->txd_next ;
+ tx_used-- ;
+ }
+ }
+
+ /*
+ * release all TxD's for both send queues
+ */
+ mac_drv_clear_txd(smc) ;
+
+ for (i = QUEUE_S; i <= QUEUE_A0; i++) {
+ queue = smc->hw.fp.tx[i] ;
+ t = queue->tx_curr_get ;
+
+ /*
+ * write the phys pointer of the NEXT descriptor into the
+ * BMU's current address descriptor pointer and set
+ * tx_curr_get and tx_curr_put to this position
+ */
+ if (i == QUEUE_S) {
+ outpd(ADDR(B5_XS_DA),le32_to_cpu(t->txd_ntdadr)) ;
+ }
+ else {
+ outpd(ADDR(B5_XA_DA),le32_to_cpu(t->txd_ntdadr)) ;
+ }
+
+ queue->tx_curr_put = queue->tx_curr_get->txd_next ;
+ queue->tx_curr_get = queue->tx_curr_put ;
+ }
+}
+
+
+/*
+ -------------------------------------------------------------
+ TEST FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+#ifdef DEBUG
+/*
+ * BEGIN_MANUAL_ENTRY(mac_drv_debug_lev)
+ * void mac_drv_debug_lev(smc,flag,lev)
+ *
+ * function DOWNCALL (drvsr.c)
+ * To get a special debug info the user can assign a debug level
+ * to any debug flag.
+ *
+ * para flag debug flag, possible values are:
+ * = 0: reset all debug flags (the defined level is
+ * ignored)
+ * = 1: debug.d_smtf
+ * = 2: debug.d_smt
+ * = 3: debug.d_ecm
+ * = 4: debug.d_rmt
+ * = 5: debug.d_cfm
+ * = 6: debug.d_pcm
+ *
+ * = 10: debug.d_os.hwm_rx (hardware module receive path)
+ * = 11: debug.d_os.hwm_tx(hardware module transmit path)
+ * = 12: debug.d_os.hwm_gen(hardware module general flag)
+ *
+ * lev debug level
+ *
+ * END_MANUAL_ENTRY
+ */
+void mac_drv_debug_lev(struct s_smc *smc, int flag, int lev)
+{
+ switch(flag) {
+ case (int)NULL:
+ DB_P.d_smtf = DB_P.d_smt = DB_P.d_ecm = DB_P.d_rmt = 0 ;
+ DB_P.d_cfm = 0 ;
+ DB_P.d_os.hwm_rx = DB_P.d_os.hwm_tx = DB_P.d_os.hwm_gen = 0 ;
+#ifdef SBA
+ DB_P.d_sba = 0 ;
+#endif
+#ifdef ESS
+ DB_P.d_ess = 0 ;
+#endif
+ break ;
+ case DEBUG_SMTF:
+ DB_P.d_smtf = lev ;
+ break ;
+ case DEBUG_SMT:
+ DB_P.d_smt = lev ;
+ break ;
+ case DEBUG_ECM:
+ DB_P.d_ecm = lev ;
+ break ;
+ case DEBUG_RMT:
+ DB_P.d_rmt = lev ;
+ break ;
+ case DEBUG_CFM:
+ DB_P.d_cfm = lev ;
+ break ;
+ case DEBUG_PCM:
+ DB_P.d_pcm = lev ;
+ break ;
+ case DEBUG_SBA:
+#ifdef SBA
+ DB_P.d_sba = lev ;
+#endif
+ break ;
+ case DEBUG_ESS:
+#ifdef ESS
+ DB_P.d_ess = lev ;
+#endif
+ break ;
+ case DB_HWM_RX:
+ DB_P.d_os.hwm_rx = lev ;
+ break ;
+ case DB_HWM_TX:
+ DB_P.d_os.hwm_tx = lev ;
+ break ;
+ case DB_HWM_GEN:
+ DB_P.d_os.hwm_gen = lev ;
+ break ;
+ default:
+ break ;
+ }
+}
+#endif
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-15 21:36:46 +0000