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freebsd-dev/sys/dev/cxgb/cxgb_adapter.h
Navdeep Parhar 27d1c65e8e cxgb(4): add knob to get packet timestamps from the hardware. 
The T3 ASIC can provide an incoming packet's timestamp instead of its RSS hash.
The timestamp is just a counter running off the card's clock.  With a 175MHz
clock an increment represents ~5.7ns and the 32 bit value wraps around in ~25s.

# sysctl -d dev.cxgbc.0.pkt_timestamp
dev.cxgbc.0.pkt_timestamp: provide packet timestamp instead of connection hash

# sysctl -d dev.cxgbc.0.core_clock
dev.cxgbc.0.core_clock: core clock frequency (in KHz)
# sysctl dev.cxgbc.0.core_clock
dev.cxgbc.0.core_clock: 175000
2010-06-12 22:33:04 +00:00

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/**************************************************************************
Copyright (c) 2007-2009, Chelsio Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Neither the name of the Chelsio Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
$FreeBSD$
***************************************************************************/
#ifndef _CXGB_ADAPTER_H_
#define _CXGB_ADAPTER_H_
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/condvar.h>
#include <sys/buf_ring.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/if_dl.h>
#include <netinet/tcp_lro.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus_dma.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <cxgb_osdep.h>
#include <t3cdev.h>
#include <sys/mbufq.h>
struct adapter;
struct sge_qset;
extern int cxgb_debug;
#ifdef DEBUG_LOCKING
#define MTX_INIT(lock, lockname, class, flags) \
do { \
printf("initializing %s at %s:%d\n", lockname, __FILE__, __LINE__); \
mtx_init((lock), lockname, class, flags); \
} while (0)
#define MTX_DESTROY(lock) \
do { \
printf("destroying %s at %s:%d\n", (lock)->lock_object.lo_name, __FILE__, __LINE__); \
mtx_destroy((lock)); \
} while (0)
#else
#define MTX_INIT mtx_init
#define MTX_DESTROY mtx_destroy
#endif
enum {
LF_NO = 0,
LF_MAYBE,
LF_YES
};
struct port_info {
struct adapter *adapter;
struct ifnet *ifp;
int if_flags;
int flags;
const struct port_type_info *port_type;
struct cphy phy;
struct cmac mac;
struct link_config link_config;
struct ifmedia media;
struct mtx lock;
uint32_t port_id;
uint32_t tx_chan;
uint32_t txpkt_intf;
uint32_t first_qset;
uint32_t nqsets;
int link_fault;
uint8_t hw_addr[ETHER_ADDR_LEN];
struct task timer_reclaim_task;
struct cdev *port_cdev;
#define PORT_LOCK_NAME_LEN 32
#define PORT_NAME_LEN 32
char lockbuf[PORT_LOCK_NAME_LEN];
char namebuf[PORT_NAME_LEN];
} __aligned(L1_CACHE_BYTES);
enum {
/* adapter flags */
FULL_INIT_DONE = (1 << 0),
USING_MSI = (1 << 1),
USING_MSIX = (1 << 2),
QUEUES_BOUND = (1 << 3),
FW_UPTODATE = (1 << 4),
TPS_UPTODATE = (1 << 5),
CXGB_SHUTDOWN = (1 << 6),
CXGB_OFLD_INIT = (1 << 7),
TP_PARITY_INIT = (1 << 8),
CXGB_BUSY = (1 << 9),
/* port flags */
DOOMED = (1 << 0),
};
#define IS_DOOMED(p) (p->flags & DOOMED)
#define SET_DOOMED(p) do {p->flags |= DOOMED;} while (0)
#define IS_BUSY(sc) (sc->flags & CXGB_BUSY)
#define SET_BUSY(sc) do {sc->flags |= CXGB_BUSY;} while (0)
#define CLR_BUSY(sc) do {sc->flags &= ~CXGB_BUSY;} while (0)
#define FL_Q_SIZE 4096
#define JUMBO_Q_SIZE 1024
#define RSPQ_Q_SIZE 2048
#define TX_ETH_Q_SIZE 1024
#define TX_OFLD_Q_SIZE 1024
#define TX_CTRL_Q_SIZE 256
enum { TXQ_ETH = 0,
TXQ_OFLD = 1,
TXQ_CTRL = 2, };
/*
* work request size in bytes
*/
#define WR_LEN (WR_FLITS * 8)
#define PIO_LEN (WR_LEN - sizeof(struct cpl_tx_pkt_lso))
struct lro_state {
unsigned short enabled;
struct lro_ctrl ctrl;
};
#define RX_BUNDLE_SIZE 8
struct rsp_desc;
struct sge_rspq {
uint32_t credits;
uint32_t size;
uint32_t cidx;
uint32_t gen;
uint32_t polling;
uint32_t holdoff_tmr;
uint32_t next_holdoff;
uint32_t imm_data;
uint32_t async_notif;
uint32_t cntxt_id;
uint32_t offload_pkts;
uint32_t offload_bundles;
uint32_t pure_rsps;
uint32_t unhandled_irqs;
uint32_t starved;
bus_addr_t phys_addr;
bus_dma_tag_t desc_tag;
bus_dmamap_t desc_map;
struct t3_mbuf_hdr rspq_mh;
struct rsp_desc *desc;
struct mtx lock;
#define RSPQ_NAME_LEN 32
char lockbuf[RSPQ_NAME_LEN];
uint32_t rspq_dump_start;
uint32_t rspq_dump_count;
};
struct rx_desc;
struct rx_sw_desc;
struct sge_fl {
uint32_t buf_size;
uint32_t credits;
uint32_t size;
uint32_t cidx;
uint32_t pidx;
uint32_t gen;
uint32_t db_pending;
bus_addr_t phys_addr;
uint32_t cntxt_id;
uint32_t empty;
bus_dma_tag_t desc_tag;
bus_dmamap_t desc_map;
bus_dma_tag_t entry_tag;
uma_zone_t zone;
struct rx_desc *desc;
struct rx_sw_desc *sdesc;
int type;
};
struct tx_desc;
struct tx_sw_desc;
#define TXQ_TRANSMITTING 0x1
struct sge_txq {
uint64_t flags;
uint32_t in_use;
uint32_t size;
uint32_t processed;
uint32_t cleaned;
uint32_t stop_thres;
uint32_t cidx;
uint32_t pidx;
uint32_t gen;
uint32_t unacked;
uint32_t db_pending;
struct tx_desc *desc;
struct tx_sw_desc *sdesc;
uint32_t token;
bus_addr_t phys_addr;
struct task qresume_task;
struct task qreclaim_task;
uint32_t cntxt_id;
uint64_t stops;
uint64_t restarts;
bus_dma_tag_t desc_tag;
bus_dmamap_t desc_map;
bus_dma_tag_t entry_tag;
struct mbuf_head sendq;
struct buf_ring *txq_mr;
struct ifaltq *txq_ifq;
struct callout txq_timer;
struct callout txq_watchdog;
uint64_t txq_coalesced;
uint32_t txq_skipped;
uint32_t txq_enqueued;
uint32_t txq_dump_start;
uint32_t txq_dump_count;
uint64_t txq_direct_packets;
uint64_t txq_direct_bytes;
uint64_t txq_frees;
struct sg_ent txq_sgl[TX_MAX_SEGS / 2 + 1];
};
enum {
SGE_PSTAT_TSO, /* # of TSO requests */
SGE_PSTAT_RX_CSUM_GOOD, /* # of successful RX csum offloads */
SGE_PSTAT_TX_CSUM, /* # of TX checksum offloads */
SGE_PSTAT_VLANEX, /* # of VLAN tag extractions */
SGE_PSTAT_VLANINS, /* # of VLAN tag insertions */
};
#define SGE_PSTAT_MAX (SGE_PSTAT_VLANINS+1)
#define QS_EXITING 0x1
#define QS_RUNNING 0x2
#define QS_BOUND 0x4
#define QS_FLUSHING 0x8
#define QS_TIMEOUT 0x10
struct sge_qset {
struct sge_rspq rspq;
struct sge_fl fl[SGE_RXQ_PER_SET];
struct lro_state lro;
struct sge_txq txq[SGE_TXQ_PER_SET];
uint32_t txq_stopped; /* which Tx queues are stopped */
uint64_t port_stats[SGE_PSTAT_MAX];
struct port_info *port;
int idx; /* qset # */
int qs_flags;
int coalescing;
struct cv qs_cv;
struct mtx lock;
#define QS_NAME_LEN 32
char namebuf[QS_NAME_LEN];
};
struct sge {
struct sge_qset qs[SGE_QSETS];
struct mtx reg_lock;
};
struct filter_info;
struct adapter {
device_t dev;
int flags;
TAILQ_ENTRY(adapter) adapter_entry;
/* PCI register resources */
int regs_rid;
struct resource *regs_res;
int udbs_rid;
struct resource *udbs_res;
bus_space_handle_t bh;
bus_space_tag_t bt;
bus_size_t mmio_len;
uint32_t link_width;
/* DMA resources */
bus_dma_tag_t parent_dmat;
bus_dma_tag_t rx_dmat;
bus_dma_tag_t rx_jumbo_dmat;
bus_dma_tag_t tx_dmat;
/* Interrupt resources */
struct resource *irq_res;
int irq_rid;
void *intr_tag;
uint32_t msix_regs_rid;
struct resource *msix_regs_res;
struct resource *msix_irq_res[SGE_QSETS];
int msix_irq_rid[SGE_QSETS];
void *msix_intr_tag[SGE_QSETS];
uint8_t rxpkt_map[8]; /* maps RX_PKT interface values to port ids */
uint8_t rrss_map[SGE_QSETS]; /* revers RSS map table */
uint16_t rspq_map[RSS_TABLE_SIZE]; /* maps 7-bit cookie to qidx */
union {
uint8_t fill[SGE_QSETS];
uint64_t coalesce;
} u;
#define tunq_fill u.fill
#define tunq_coalesce u.coalesce
struct filter_info *filters;
/* Tasks */
struct task ext_intr_task;
struct task slow_intr_task;
struct task tick_task;
struct taskqueue *tq;
struct callout cxgb_tick_ch;
struct callout sge_timer_ch;
/* Register lock for use by the hardware layer */
struct mtx mdio_lock;
struct mtx elmer_lock;
/* Bookkeeping for the hardware layer */
struct adapter_params params;
unsigned int slow_intr_mask;
unsigned long irq_stats[IRQ_NUM_STATS];
struct sge sge;
struct mc7 pmrx;
struct mc7 pmtx;
struct mc7 cm;
struct mc5 mc5;
struct port_info port[MAX_NPORTS];
device_t portdev[MAX_NPORTS];
struct t3cdev tdev;
char fw_version[64];
char port_types[MAX_NPORTS + 1];
uint32_t open_device_map;
uint32_t registered_device_map;
struct mtx lock;
driver_intr_t *cxgb_intr;
int msi_count;
#define ADAPTER_LOCK_NAME_LEN 32
char lockbuf[ADAPTER_LOCK_NAME_LEN];
char reglockbuf[ADAPTER_LOCK_NAME_LEN];
char mdiolockbuf[ADAPTER_LOCK_NAME_LEN];
char elmerlockbuf[ADAPTER_LOCK_NAME_LEN];
int timestamp;
};
struct t3_rx_mode {
uint32_t idx;
struct port_info *port;
};
#define MDIO_LOCK(adapter) mtx_lock(&(adapter)->mdio_lock)
#define MDIO_UNLOCK(adapter) mtx_unlock(&(adapter)->mdio_lock)
#define ELMR_LOCK(adapter) mtx_lock(&(adapter)->elmer_lock)
#define ELMR_UNLOCK(adapter) mtx_unlock(&(adapter)->elmer_lock)
#define PORT_LOCK(port) mtx_lock(&(port)->lock);
#define PORT_UNLOCK(port) mtx_unlock(&(port)->lock);
#define PORT_LOCK_INIT(port, name) mtx_init(&(port)->lock, name, 0, MTX_DEF)
#define PORT_LOCK_DEINIT(port) mtx_destroy(&(port)->lock)
#define PORT_LOCK_ASSERT_NOTOWNED(port) mtx_assert(&(port)->lock, MA_NOTOWNED)
#define PORT_LOCK_ASSERT_OWNED(port) mtx_assert(&(port)->lock, MA_OWNED)
#define ADAPTER_LOCK(adap) mtx_lock(&(adap)->lock);
#define ADAPTER_UNLOCK(adap) mtx_unlock(&(adap)->lock);
#define ADAPTER_LOCK_INIT(adap, name) mtx_init(&(adap)->lock, name, 0, MTX_DEF)
#define ADAPTER_LOCK_DEINIT(adap) mtx_destroy(&(adap)->lock)
#define ADAPTER_LOCK_ASSERT_NOTOWNED(adap) mtx_assert(&(adap)->lock, MA_NOTOWNED)
#define ADAPTER_LOCK_ASSERT_OWNED(adap) mtx_assert(&(adap)->lock, MA_OWNED)
static __inline uint32_t
t3_read_reg(adapter_t *adapter, uint32_t reg_addr)
{
return (bus_space_read_4(adapter->bt, adapter->bh, reg_addr));
}
static __inline void
t3_write_reg(adapter_t *adapter, uint32_t reg_addr, uint32_t val)
{
bus_space_write_4(adapter->bt, adapter->bh, reg_addr, val);
}
static __inline void
t3_os_pci_read_config_4(adapter_t *adapter, int reg, uint32_t *val)
{
*val = pci_read_config(adapter->dev, reg, 4);
}
static __inline void
t3_os_pci_write_config_4(adapter_t *adapter, int reg, uint32_t val)
{
pci_write_config(adapter->dev, reg, val, 4);
}
static __inline void
t3_os_pci_read_config_2(adapter_t *adapter, int reg, uint16_t *val)
{
*val = pci_read_config(adapter->dev, reg, 2);
}
static __inline void
t3_os_pci_write_config_2(adapter_t *adapter, int reg, uint16_t val)
{
pci_write_config(adapter->dev, reg, val, 2);
}
static __inline uint8_t *
t3_get_next_mcaddr(struct t3_rx_mode *rm)
{
uint8_t *macaddr = NULL;
struct ifnet *ifp = rm->port->ifp;
struct ifmultiaddr *ifma;
int i = 0;
if_maddr_rlock(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (i == rm->idx) {
macaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
break;
}
i++;
}
if_maddr_runlock(ifp);
rm->idx++;
return (macaddr);
}
static __inline void
t3_init_rx_mode(struct t3_rx_mode *rm, struct port_info *port)
{
rm->idx = 0;
rm->port = port;
}
static __inline struct port_info *
adap2pinfo(struct adapter *adap, int idx)
{
return &adap->port[idx];
}
int t3_os_find_pci_capability(adapter_t *adapter, int cap);
int t3_os_pci_save_state(struct adapter *adapter);
int t3_os_pci_restore_state(struct adapter *adapter);
void t3_os_link_changed(adapter_t *adapter, int port_id, int link_status,
int speed, int duplex, int fc, int mac_was_reset);
void t3_os_phymod_changed(struct adapter *adap, int port_id);
void t3_sge_err_intr_handler(adapter_t *adapter);
int t3_offload_tx(struct t3cdev *, struct mbuf *);
void t3_os_ext_intr_handler(adapter_t *adapter);
void t3_os_set_hw_addr(adapter_t *adapter, int port_idx, u8 hw_addr[]);
int t3_mgmt_tx(adapter_t *adap, struct mbuf *m);
int t3_sge_alloc(struct adapter *);
int t3_sge_free(struct adapter *);
int t3_sge_alloc_qset(adapter_t *, uint32_t, int, int, const struct qset_params *,
int, struct port_info *);
void t3_free_sge_resources(adapter_t *);
void t3_sge_start(adapter_t *);
void t3_sge_stop(adapter_t *);
void t3b_intr(void *data);
void t3_intr_msi(void *data);
void t3_intr_msix(void *data);
int t3_sge_init_adapter(adapter_t *);
int t3_sge_reset_adapter(adapter_t *);
int t3_sge_init_port(struct port_info *);
void t3_free_tx_desc(struct sge_qset *qs, int n, int qid);
void t3_rx_eth(struct adapter *adap, struct sge_rspq *rq, struct mbuf *m, int ethpad);
void t3_add_attach_sysctls(adapter_t *sc);
void t3_add_configured_sysctls(adapter_t *sc);
int t3_get_desc(const struct sge_qset *qs, unsigned int qnum, unsigned int idx,
unsigned char *data);
void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);
#define CXGB_TICKS(a) ((a)->params.linkpoll_period ? \
(hz * (a)->params.linkpoll_period) / 10 : \
(a)->params.stats_update_period * hz)
/*
* XXX figure out how we can return this to being private to sge
*/
#define desc_reclaimable(q) ((int)((q)->processed - (q)->cleaned - TX_MAX_DESC))
#define container_of(p, stype, field) ((stype *)(((uint8_t *)(p)) - offsetof(stype, field)))
static __inline struct sge_qset *
fl_to_qset(struct sge_fl *q, int qidx)
{
return container_of(q, struct sge_qset, fl[qidx]);
}
static __inline struct sge_qset *
rspq_to_qset(struct sge_rspq *q)
{
return container_of(q, struct sge_qset, rspq);
}
static __inline struct sge_qset *
txq_to_qset(struct sge_txq *q, int qidx)
{
return container_of(q, struct sge_qset, txq[qidx]);
}
static __inline struct adapter *
tdev2adap(struct t3cdev *d)
{
return container_of(d, struct adapter, tdev);
}
#undef container_of
#define OFFLOAD_DEVMAP_BIT 15
static inline int offload_running(adapter_t *adapter)
{
return isset(&adapter->open_device_map, OFFLOAD_DEVMAP_BIT);
}
void cxgb_tx_watchdog(void *arg);
int cxgb_transmit(struct ifnet *ifp, struct mbuf *m);
void cxgb_qflush(struct ifnet *ifp);
void cxgb_start(struct ifnet *ifp);
#endif
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