l1.h
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- /* $Id$
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992-1997,2000-2002 Silicon Graphics, Inc. All Rights Reserved.
- */
- #ifndef _ASM_SN_KSYS_L1_H
- #define _ASM_SN_KSYS_L1_H
- #include <asm/sn/vector.h>
- #include <asm/sn/addrs.h>
- #include <asm/atomic.h>
- #include <asm/sn/sv.h>
- #define BRL1_QSIZE 128 /* power of 2 is more efficient */
- #define BRL1_BUFSZ 264 /* needs to be large enough
- * to hold 2 flags, escaped
- * CRC, type/subchannel byte,
- * and escaped payload
- */
- #define BRL1_IQS 32
- #define BRL1_OQS 4
- typedef struct sc_cq_s {
- u_char buf[BRL1_QSIZE];
- int ipos, opos, tent_next;
- } sc_cq_t;
- /* An l1sc_t struct can be associated with the local (C-brick) L1 or an L1
- * on an R-brick. In the R-brick case, the l1sc_t records a vector path
- * to the R-brick's junk bus UART. In the C-brick case, we just use the
- * following flag to denote the local uart.
- *
- * This value can't be confused with a network vector because the least-
- * significant nibble of a network vector cannot be greater than 8.
- */
- #define BRL1_LOCALHUB_UART ((net_vec_t)0xf)
- /* L1<->Bedrock reserved subchannels */
- /* console channels */
- #define SC_CONS_CPU0 0x00
- #define SC_CONS_CPU1 0x01
- #define SC_CONS_CPU2 0x02
- #define SC_CONS_CPU3 0x03
- #define L1_ELSCUART_SUBCH(p) (p)
- #define L1_ELSCUART_CPU(ch) (ch)
- #define SC_CONS_SYSTEM CPUS_PER_NODE
- /* mapping subchannels to queues */
- #define MAP_IQ(s) (s)
- #define MAP_OQ(s) (s)
-
- #define BRL1_NUM_SUBCHANS 32
- #define BRL1_CMD_SUBCH 16
- #define BRL1_EVENT_SUBCH (BRL1_NUM_SUBCHANS - 1)
- #define BRL1_SUBCH_RSVD 0
- #define BRL1_SUBCH_FREE (-1)
- /* constants for L1 hwgraph vertex info */
- #define CBRICK_L1 (__psint_t)1
- #define IOBRICK_L1 (__psint_t)2
- #define RBRICK_L1 (__psint_t)3
- struct l1sc_s;
- /* Saved off interrupt frame */
- typedef struct brl1_intr_frame {
- int bf_irq; /* irq received */
- void *bf_dev_id; /* device information */
- struct pt_regs *bf_regs; /* register frame */
- } brl1_intr_frame_t;
- typedef void (*brl1_notif_t)(int, void *, struct pt_regs *, struct l1sc_s *, int);
- typedef int (*brl1_uartf_t)(struct l1sc_s *);
- /* structure for controlling a subchannel */
- typedef struct brl1_sch_s {
- int use; /* if this subchannel is free,
- * use == BRL1_SUBCH_FREE */
- uint target; /* type, rack and slot of component to
- * which this subchannel is directed */
- atomic_t packet_arrived; /* true if packet arrived on
- * this subchannel */
- sc_cq_t * iqp; /* input queue for this subchannel */
- sv_t arrive_sv; /* used to wait for a packet */
- spinlock_t data_lock; /* synchronize access to input queues and
- * other fields of the brl1_sch_s struct */
- brl1_notif_t tx_notify; /* notify higher layer that transmission may
- * continue */
- brl1_notif_t rx_notify; /* notify higher layer that a packet has been
- * received */
- brl1_intr_frame_t irq_frame; /* saved off irq information */
- } brl1_sch_t;
- /* br<->l1 protocol states */
- #define BRL1_IDLE 0
- #define BRL1_FLAG 1
- #define BRL1_HDR 2
- #define BRL1_BODY 3
- #define BRL1_ESC 4
- #define BRL1_RESET 7
- #ifndef __ASSEMBLY__
- /*
- * l1sc_t structure-- tracks protocol state, open subchannels, etc.
- */
- typedef struct l1sc_s {
- nasid_t nasid; /* nasid with which this instance
- * of the structure is associated */
- moduleid_t modid; /* module id of this brick */
- u_char verbose; /* non-zero if elscuart routines should
- * prefix output */
- net_vec_t uart; /* vector path to UART, or BRL1_LOCALUART */
- int sent; /* number of characters sent */
- int send_len; /* number of characters in send buf */
- brl1_uartf_t putc_f; /* pointer to UART putc function */
- brl1_uartf_t getc_f; /* pointer to UART getc function */
- spinlock_t send_lock; /* arbitrates send synchronization */
- spinlock_t recv_lock; /* arbitrates uart receive access */
- spinlock_t subch_lock; /* arbitrates subchannel allocation */
- cpuid_t intr_cpu; /* cpu that receives L1 interrupts */
- u_char send_in_use; /* non-zero if send buffer contains an
- * unsent or partially-sent packet */
- u_char fifo_space; /* current depth of UART send FIFO */
- u_char brl1_state; /* current state of the receive side */
- u_char brl1_last_hdr; /* last header byte received */
- char send[BRL1_BUFSZ]; /* send buffer */
- int sol; /* "start of line" (see elscuart routines) */
- int cons_listen; /* non-zero if the elscuart interface should
- * also check the system console subchannel */
- brl1_sch_t subch[BRL1_NUM_SUBCHANS];
- /* subchannels provided by link */
- sc_cq_t garbage_q; /* a place to put unsolicited packets */
- sc_cq_t oq[BRL1_OQS]; /* elscuart output queues */
- } l1sc_t;
- /* error codes */
- #define BRL1_VALID 0
- #define BRL1_FULL_Q (-1)
- #define BRL1_CRC (-2)
- #define BRL1_PROTOCOL (-3)
- #define BRL1_NO_MESSAGE (-4)
- #define BRL1_LINK (-5)
- #define BRL1_BUSY (-6)
- #define SC_SUCCESS BRL1_VALID
- #define SC_NMSG BRL1_NO_MESSAGE
- #define SC_BUSY BRL1_BUSY
- #define SC_NOPEN (-7)
- #define SC_BADSUBCH (-8)
- #define SC_TIMEDOUT (-9)
- #define SC_NSUBCH (-10)
- /* L1 Target Addresses */
- /*
- * L1 commands and responses use source/target addresses that are
- * 32 bits long. These are broken up into multiple bitfields that
- * specify the type of the target controller (could actually be L2
- * L3, not just L1), the rack and bay of the target, and the task
- * id (L1 functionality is divided into several independent "tasks"
- * that can each receive command requests and transmit responses)
- */
- #define L1_ADDR_TYPE_SHFT 28
- #define L1_ADDR_TYPE_MASK 0xF0000000
- #define L1_ADDR_TYPE_L1 0x00 /* L1 system controller */
- #define L1_ADDR_TYPE_L2 0x01 /* L2 system controller */
- #define L1_ADDR_TYPE_L3 0x02 /* L3 system controller */
- #define L1_ADDR_TYPE_CBRICK 0x03 /* attached C brick */
- #define L1_ADDR_TYPE_IOBRICK 0x04 /* attached I/O brick */
- #define L1_ADDR_RACK_SHFT 18
- #define L1_ADDR_RACK_MASK 0x0FFC0000
- #define L1_ADDR_RACK_LOCAL 0x3ff /* local brick's rack */
- #define L1_ADDR_BAY_SHFT 12
- #define L1_ADDR_BAY_MASK 0x0003F000
- #define L1_ADDR_BAY_LOCAL 0x3f /* local brick's bay */
- #define L1_ADDR_TASK_SHFT 0
- #define L1_ADDR_TASK_MASK 0x0000001F
- #define L1_ADDR_TASK_INVALID 0x00 /* invalid task */
- #define L1_ADDR_TASK_IROUTER 0x01 /* iRouter */
- #define L1_ADDR_TASK_SYS_MGMT 0x02 /* system management port */
- #define L1_ADDR_TASK_CMD 0x03 /* command interpreter */
- #define L1_ADDR_TASK_ENV 0x04 /* environmental monitor */
- #define L1_ADDR_TASK_BEDROCK 0x05 /* bedrock */
- #define L1_ADDR_TASK_GENERAL 0x06 /* general requests */
- #define L1_ADDR_LOCAL
- (L1_ADDR_TYPE_L1 << L1_ADDR_TYPE_SHFT) |
- (L1_ADDR_RACK_LOCAL << L1_ADDR_RACK_SHFT) |
- (L1_ADDR_BAY_LOCAL << L1_ADDR_BAY_SHFT)
- #define L1_ADDR_LOCALIO
- (L1_ADDR_TYPE_IOBRICK << L1_ADDR_TYPE_SHFT) |
- (L1_ADDR_RACK_LOCAL << L1_ADDR_RACK_SHFT) |
- (L1_ADDR_BAY_LOCAL << L1_ADDR_BAY_SHFT)
- #define L1_ADDR_LOCAL_SHFT L1_ADDR_BAY_SHFT
- /* response argument types */
- #define L1_ARG_INT 0x00 /* 4-byte integer (big-endian) */
- #define L1_ARG_ASCII 0x01 /* null-terminated ASCII string */
- #define L1_ARG_UNKNOWN 0x80 /* unknown data type. The low
- * 7 bits will contain the data
- * length. */
- /* response codes */
- #define L1_RESP_OK 0 /* no problems encountered */
- #define L1_RESP_IROUTER (- 1) /* iRouter error */
- #define L1_RESP_ARGC (-100) /* arg count mismatch */
- #define L1_RESP_REQC (-101) /* bad request code */
- #define L1_RESP_NAVAIL (-104) /* requested data not available */
- #define L1_RESP_ARGVAL (-105) /* arg value out of range */
- #define L1_RESP_INVAL (-107) /* requested data invalid */
- /* L1 general requests */
- /* request codes */
- #define L1_REQ_RDBG 0x0001 /* read debug switches */
- #define L1_REQ_RRACK 0x0002 /* read brick rack & bay */
- #define L1_REQ_RRBT 0x0003 /* read brick rack, bay & type */
- #define L1_REQ_SER_NUM 0x0004 /* read brick serial number */
- #define L1_REQ_FW_REV 0x0005 /* read L1 firmware revision */
- #define L1_REQ_EEPROM 0x0006 /* read EEPROM info */
- #define L1_REQ_EEPROM_FMT 0x0007 /* get EEPROM data format & size */
- #define L1_REQ_SYS_SERIAL 0x0008 /* read system serial number */
- #define L1_REQ_PARTITION_GET 0x0009 /* read partition id */
- #define L1_REQ_PORTSPEED 0x000a /* get ioport speed */
- #define L1_REQ_CONS_SUBCH 0x1002 /* select this node's console
- subchannel */
- #define L1_REQ_CONS_NODE 0x1003 /* volunteer to be the master
- (console-hosting) node */
- #define L1_REQ_DISP1 0x1004 /* write line 1 of L1 display */
- #define L1_REQ_DISP2 0x1005 /* write line 2 of L1 display */
- #define L1_REQ_PARTITION_SET 0x1006 /* set partition id */
- #define L1_REQ_EVENT_SUBCH 0x1007 /* set the subchannel for system
- controller event transmission */
- #define L1_REQ_RESET 0x2000 /* request a full system reset */
- #define L1_REQ_PCI_UP 0x2001 /* power up pci slot or bus */
- #define L1_REQ_PCI_DOWN 0x2002 /* power down pci slot or bus */
- #define L1_REQ_PCI_RESET 0x2003 /* reset pci bus or slot */
- /* L1 command interpreter requests */
- /* request codes */
- #define L1_REQ_EXEC_CMD 0x0000 /* interpret and execute an ASCII
- command string */
- /* brick type response codes */
- #define L1_BRICKTYPE_C 0x43
- #define L1_BRICKTYPE_I 0x49
- #define L1_BRICKTYPE_P 0x50
- #define L1_BRICKTYPE_R 0x52
- #define L1_BRICKTYPE_X 0x58
- /* EEPROM codes (for the "read EEPROM" request) */
- /* c brick */
- #define L1_EEP_NODE 0x00 /* node board */
- #define L1_EEP_PIMM0 0x01
- #define L1_EEP_PIMM(x) (L1_EEP_PIMM0+(x))
- #define L1_EEP_DIMM0 0x03
- #define L1_EEP_DIMM(x) (L1_EEP_DIMM0+(x))
- /* other brick types */
- #define L1_EEP_POWER 0x00 /* power board */
- #define L1_EEP_LOGIC 0x01 /* logic board */
- /* info area types */
- #define L1_EEP_CHASSIS 1 /* chassis info area */
- #define L1_EEP_BOARD 2 /* board info area */
- #define L1_EEP_IUSE 3 /* internal use area */
- #define L1_EEP_SPD 4 /* serial presence detect record */
- typedef uint32_t l1addr_t;
- #define L1_BUILD_ADDR(addr,at,r,s,t)
- (*(l1addr_t *)(addr) = ((l1addr_t)(at) << L1_ADDR_TYPE_SHFT) |
- ((l1addr_t)(r) << L1_ADDR_RACK_SHFT) |
- ((l1addr_t)(s) << L1_ADDR_BAY_SHFT) |
- ((l1addr_t)(t) << L1_ADDR_TASK_SHFT))
- #define L1_ADDRESS_TO_TASK(addr,trb,tsk)
- (*(l1addr_t *)(addr) = (l1addr_t)(trb) |
- ((l1addr_t)(tsk) << L1_ADDR_TASK_SHFT))
- #define L1_DISPLAY_LINE_LENGTH 12 /* L1 display characters/line */
- #ifdef L1_DISP_2LINES
- #define L1_DISPLAY_LINES 2 /* number of L1 display lines */
- #else
- #define L1_DISPLAY_LINES 1 /* number of L1 display lines available
- * to system software */
- #endif
- #define SC_EVENT_CLASS_MASK ((unsigned short)0xff00)
- #define bzero(d, n) memset((d), 0, (n))
- /* public interfaces to L1 system controller */
- int sc_open( l1sc_t *sc, uint target );
- int sc_close( l1sc_t *sc, int ch );
- int sc_construct_msg( l1sc_t *sc, int ch,
- char *msg, int msg_len,
- uint addr_task, short req_code,
- int req_nargs, ... );
- int sc_interpret_resp( char *resp, int resp_nargs, ... );
- int sc_send( l1sc_t *sc, int ch, char *msg, int len, int wait );
- int sc_recv( l1sc_t *sc, int ch, char *msg, int *len, uint64_t block );
- int sc_command( l1sc_t *sc, int ch, char *cmd, char *resp, int *len );
- int sc_command_kern( l1sc_t *sc, int ch, char *cmd, char *resp, int *len );
- int sc_poll( l1sc_t *sc, int ch );
- void sc_init( l1sc_t *sc, nasid_t nasid, net_vec_t uart );
- void sc_intr_enable( l1sc_t *sc );
- int elsc_rack_bay_get(l1sc_t *e, uint *rack, uint *bay);
- int elsc_rack_bay_type_get(l1sc_t *e, uint *rack,
- uint *bay, uint *brick_type);
- int elsc_cons_subch(l1sc_t *e, uint ch);
- int elsc_cons_node(l1sc_t *e);
- int elsc_display_line(l1sc_t *e, char *line, int lnum);
- extern l1sc_t *get_elsc( void );
- #define get_l1sc get_elsc
- #define get_master_l1sc get_l1sc
- int router_module_get( nasid_t nasid, net_vec_t path );
- int iobrick_rack_bay_type_get( l1sc_t *sc, uint *rack,
- uint *bay, uint *brick_type );
- int iobrick_module_get( l1sc_t *sc );
- int iobrick_pci_slot_pwr( l1sc_t *sc, int bus, int slot, int up );
- int iobrick_pci_bus_pwr( l1sc_t *sc, int bus, int up );
- int iobrick_sc_version( l1sc_t *sc, char *result );
- #endif /* !__ASSEMBLY__ */
- #endif /* _ASM_SN_KSYS_L1_H */