--- /dev/null
+/*
+ * 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.
+ *
+ * Derived from IRIX <sys/SN/SN0/hubio.h>, Revision 1.80.
+ *
+ * Copyright (C) 1992 - 1997, 1999 Silicon Graphics, Inc.
+ * Copyright (C) 1999 by Ralf Baechle
+ */
+#ifndef _ASM_SGI_SN_SN0_HUBIO_H
+#define _ASM_SGI_SN_SN0_HUBIO_H
+
+/*
+ * Hub I/O interface registers
+ *
+ * All registers in this file are subject to change until Hub chip tapeout.
+ * In general, the longer software name should be used when available.
+ */
+
+/*
+ * Slightly friendlier names for some common registers.
+ * The hardware definitions follow.
+ */
+#define IIO_WIDGET IIO_WID /* Widget identification */
+#define IIO_WIDGET_STAT IIO_WSTAT /* Widget status register */
+#define IIO_WIDGET_CTRL IIO_WCR /* Widget control register */
+#define IIO_WIDGET_TOUT IIO_WRTO /* Widget request timeout */
+#define IIO_WIDGET_FLUSH IIO_WTFR /* Widget target flush */
+#define IIO_PROTECT IIO_ILAPR /* IO interface protection */
+#define IIO_PROTECT_OVRRD IIO_ILAPO /* IO protect override */
+#define IIO_OUTWIDGET_ACCESS IIO_IOWA /* Outbound widget access */
+#define IIO_INWIDGET_ACCESS IIO_IIWA /* Inbound widget access */
+#define IIO_INDEV_ERR_MASK IIO_IIDEM /* Inbound device error mask */
+#define IIO_LLP_CSR IIO_ILCSR /* LLP control and status */
+#define IIO_LLP_LOG IIO_ILLR /* LLP log */
+#define IIO_XTALKCC_TOUT IIO_IXCC /* Xtalk credit count timeout*/
+#define IIO_XTALKTT_TOUT IIO_IXTT /* Xtalk tail timeout */
+#define IIO_IO_ERR_CLR IIO_IECLR /* IO error clear */
+#define IIO_BTE_CRB_CNT IIO_IBCN /* IO BTE CRB count */
+
+#define IIO_LLP_CSR_IS_UP 0x00002000
+#define IIO_LLP_CSR_LLP_STAT_MASK 0x00003000
+#define IIO_LLP_CSR_LLP_STAT_SHFT 12
+
+/* key to IIO_PROTECT_OVRRD */
+#define IIO_PROTECT_OVRRD_KEY 0x53474972756c6573ull /* "SGIrules" */
+
+/* BTE register names */
+#define IIO_BTE_STAT_0 IIO_IBLS_0 /* Also BTE length/status 0 */
+#define IIO_BTE_SRC_0 IIO_IBSA_0 /* Also BTE source address 0 */
+#define IIO_BTE_DEST_0 IIO_IBDA_0 /* Also BTE dest. address 0 */
+#define IIO_BTE_CTRL_0 IIO_IBCT_0 /* Also BTE control/terminate 0 */
+#define IIO_BTE_NOTIFY_0 IIO_IBNA_0 /* Also BTE notification 0 */
+#define IIO_BTE_INT_0 IIO_IBIA_0 /* Also BTE interrupt 0 */
+#define IIO_BTE_OFF_0 0 /* Base offset from BTE 0 regs. */
+#define IIO_BTE_OFF_1 IIO_IBLS_1 - IIO_IBLS_0 /* Offset from base to BTE 1 */
+
+/* BTE register offsets from base */
+#define BTEOFF_STAT 0
+#define BTEOFF_SRC (IIO_BTE_SRC_0 - IIO_BTE_STAT_0)
+#define BTEOFF_DEST (IIO_BTE_DEST_0 - IIO_BTE_STAT_0)
+#define BTEOFF_CTRL (IIO_BTE_CTRL_0 - IIO_BTE_STAT_0)
+#define BTEOFF_NOTIFY (IIO_BTE_NOTIFY_0 - IIO_BTE_STAT_0)
+#define BTEOFF_INT (IIO_BTE_INT_0 - IIO_BTE_STAT_0)
+
+
+/*
+ * The following definitions use the names defined in the IO interface
+ * document for ease of reference. When possible, software should
+ * generally use the longer but clearer names defined above.
+ */
+
+#define IIO_BASE 0x400000
+#define IIO_BASE_BTE0 0x410000
+#define IIO_BASE_BTE1 0x420000
+#define IIO_BASE_PERF 0x430000
+#define IIO_PERF_CNT 0x430008
+
+#define IO_PERF_SETS 32
+
+#define IIO_WID 0x400000 /* Widget identification */
+#define IIO_WSTAT 0x400008 /* Widget status */
+#define IIO_WCR 0x400020 /* Widget control */
+
+#define IIO_WSTAT_ECRAZY (1ULL << 32) /* Hub gone crazy */
+#define IIO_WSTAT_TXRETRY (1ULL << 9) /* Hub Tx Retry timeout */
+#define IIO_WSTAT_TXRETRY_MASK (0x7F)
+#define IIO_WSTAT_TXRETRY_SHFT (16)
+#define IIO_WSTAT_TXRETRY_CNT(w) (((w) >> IIO_WSTAT_TXRETRY_SHFT) & \
+ IIO_WSTAT_TXRETRY_MASK)
+
+#define IIO_ILAPR 0x400100 /* Local Access Protection */
+#define IIO_ILAPO 0x400108 /* Protection override */
+#define IIO_IOWA 0x400110 /* outbound widget access */
+#define IIO_IIWA 0x400118 /* inbound widget access */
+#define IIO_IIDEM 0x400120 /* Inbound Device Error Mask */
+#define IIO_ILCSR 0x400128 /* LLP control and status */
+#define IIO_ILLR 0x400130 /* LLP Log */
+#define IIO_IIDSR 0x400138 /* Interrupt destination */
+
+#define IIO_IIBUSERR 0x1400208 /* Reads here cause a bus error. */
+
+/* IO Interrupt Destination Register */
+#define IIO_IIDSR_SENT_SHIFT 28
+#define IIO_IIDSR_SENT_MASK 0x10000000
+#define IIO_IIDSR_ENB_SHIFT 24
+#define IIO_IIDSR_ENB_MASK 0x01000000
+#define IIO_IIDSR_NODE_SHIFT 8
+#define IIO_IIDSR_NODE_MASK 0x0000ff00
+#define IIO_IIDSR_LVL_SHIFT 0
+#define IIO_IIDSR_LVL_MASK 0x0000003f
+
+
+/* GFX Flow Control Node/Widget Register */
+#define IIO_IGFX_0 0x400140 /* gfx node/widget register 0 */
+#define IIO_IGFX_1 0x400148 /* gfx node/widget register 1 */
+#define IIO_IGFX_W_NUM_BITS 4 /* size of widget num field */
+#define IIO_IGFX_W_NUM_MASK ((1<<IIO_IGFX_W_NUM_BITS)-1)
+#define IIO_IGFX_W_NUM_SHIFT 0
+#define IIO_IGFX_N_NUM_BITS 9 /* size of node num field */
+#define IIO_IGFX_N_NUM_MASK ((1<<IIO_IGFX_N_NUM_BITS)-1)
+#define IIO_IGFX_N_NUM_SHIFT 4
+#define IIO_IGFX_P_NUM_BITS 1 /* size of processor num field */
+#define IIO_IGFX_P_NUM_MASK ((1<<IIO_IGFX_P_NUM_BITS)-1)
+#define IIO_IGFX_P_NUM_SHIFT 16
+#define IIO_IGFX_VLD_BITS 1 /* size of valid field */
+#define IIO_IGFX_VLD_MASK ((1<<IIO_IGFX_VLD_BITS)-1)
+#define IIO_IGFX_VLD_SHIFT 20
+#define IIO_IGFX_INIT(widget, node, cpu, valid) (\
+ (((widget) & IIO_IGFX_W_NUM_MASK) << IIO_IGFX_W_NUM_SHIFT) | \
+ (((node) & IIO_IGFX_N_NUM_MASK) << IIO_IGFX_N_NUM_SHIFT) | \
+ (((cpu) & IIO_IGFX_P_NUM_MASK) << IIO_IGFX_P_NUM_SHIFT) | \
+ (((valid) & IIO_IGFX_VLD_MASK) << IIO_IGFX_VLD_SHIFT) )
+
+/* Scratch registers (not all bits available) */
+#define IIO_SCRATCH_REG0 0x400150
+#define IIO_SCRATCH_REG1 0x400158
+#define IIO_SCRATCH_MASK 0x0000000f00f11fff
+
+#define IIO_SCRATCH_BIT0_0 0x0000000800000000
+#define IIO_SCRATCH_BIT0_1 0x0000000400000000
+#define IIO_SCRATCH_BIT0_2 0x0000000200000000
+#define IIO_SCRATCH_BIT0_3 0x0000000100000000
+#define IIO_SCRATCH_BIT0_4 0x0000000000800000
+#define IIO_SCRATCH_BIT0_5 0x0000000000400000
+#define IIO_SCRATCH_BIT0_6 0x0000000000200000
+#define IIO_SCRATCH_BIT0_7 0x0000000000100000
+#define IIO_SCRATCH_BIT0_8 0x0000000000010000
+#define IIO_SCRATCH_BIT0_9 0x0000000000001000
+#define IIO_SCRATCH_BIT0_R 0x0000000000000fff
+
+/* IO Translation Table Entries */
+#define IIO_NUM_ITTES 7 /* ITTEs numbered 0..6 */
+ /* Hw manuals number them 1..7! */
+
+/*
+ * As a permanent workaround for a bug in the PI side of the hub, we've
+ * redefined big window 7 as small window 0.
+ */
+#define HUB_NUM_BIG_WINDOW IIO_NUM_ITTES - 1
+
+/*
+ * Use the top big window as a surrogate for the first small window
+ */
+#define SWIN0_BIGWIN HUB_NUM_BIG_WINDOW
+
+#define ILCSR_WARM_RESET 0x100
+/*
+ * The IO LLP control status register and widget control register
+ */
+#ifndef __ASSEMBLY__
+
+typedef union hubii_wid_u {
+ u64 wid_reg_value;
+ struct {
+ u64 wid_rsvd: 32, /* unused */
+ wid_rev_num: 4, /* revision number */
+ wid_part_num: 16, /* the widget type: hub=c101 */
+ wid_mfg_num: 11, /* Manufacturer id (IBM) */
+ wid_rsvd1: 1; /* Reserved */
+ } wid_fields_s;
+} hubii_wid_t;
+
+
+typedef union hubii_wcr_u {
+ u64 wcr_reg_value;
+ struct {
+ u64 wcr_rsvd: 41, /* unused */
+ wcr_e_thresh: 5, /* elasticity threshold */
+ wcr_dir_con: 1, /* widget direct connect */
+ wcr_f_bad_pkt: 1, /* Force bad llp pkt enable */
+ wcr_xbar_crd: 3, /* LLP crossbar credit */
+ wcr_rsvd1: 8, /* Reserved */
+ wcr_tag_mode: 1, /* Tag mode */
+ wcr_widget_id: 4; /* LLP crossbar credit */
+ } wcr_fields_s;
+} hubii_wcr_t;
+
+#define iwcr_dir_con wcr_fields_s.wcr_dir_con
+
+typedef union hubii_wstat_u {
+ u64 reg_value;
+ struct {
+ u64 rsvd1: 31,
+ crazy: 1, /* Crazy bit */
+ rsvd2: 8,
+ llp_tx_cnt: 8, /* LLP Xmit retry counter */
+ rsvd3: 6,
+ tx_max_rtry: 1, /* LLP Retry Timeout Signal */
+ rsvd4: 2,
+ xt_tail_to: 1, /* Xtalk Tail Timeout */
+ xt_crd_to: 1, /* Xtalk Credit Timeout */
+ pending: 4; /* Pending Requests */
+ } wstat_fields_s;
+} hubii_wstat_t;
+
+
+typedef union hubii_ilcsr_u {
+ u64 icsr_reg_value;
+ struct {
+ u64 icsr_rsvd: 22, /* unused */
+ icsr_max_burst: 10, /* max burst */
+ icsr_rsvd4: 6, /* reserved */
+ icsr_max_retry: 10, /* max retry */
+ icsr_rsvd3: 2, /* reserved */
+ icsr_lnk_stat: 2, /* link status */
+ icsr_bm8: 1, /* Bit mode 8 */
+ icsr_llp_en: 1, /* LLP enable bit */
+ icsr_rsvd2: 1, /* reserver */
+ icsr_wrm_reset: 1, /* Warm reset bit */
+ icsr_rsvd1: 2, /* Data ready offset */
+ icsr_null_to: 6; /* Null timeout */
+
+ } icsr_fields_s;
+} hubii_ilcsr_t;
+
+
+typedef union hubii_iowa_u {
+ u64 iowa_reg_value;
+ struct {
+ u64 iowa_rsvd: 48, /* unused */
+ iowa_wxoac: 8, /* xtalk widget access bits */
+ iowa_rsvd1: 7, /* xtalk widget access bits */
+ iowa_w0oac: 1; /* xtalk widget access bits */
+ } iowa_fields_s;
+} hubii_iowa_t;
+
+typedef union hubii_iiwa_u {
+ u64 iiwa_reg_value;
+ struct {
+ u64 iiwa_rsvd: 48, /* unused */
+ iiwa_wxiac: 8, /* hub wid access bits */
+ iiwa_rsvd1: 7, /* reserved */
+ iiwa_w0iac: 1; /* hub wid0 access */
+ } iiwa_fields_s;
+} hubii_iiwa_t;
+
+typedef union hubii_illr_u {
+ u64 illr_reg_value;
+ struct {
+ u64 illr_rsvd: 32, /* unused */
+ illr_cb_cnt: 16, /* checkbit error count */
+ illr_sn_cnt: 16; /* sequence number count */
+ } illr_fields_s;
+} hubii_illr_t;
+
+/* The structures below are defined to extract and modify the ii
+performance registers */
+
+/* io_perf_sel allows the caller to specify what tests will be
+ performed */
+typedef union io_perf_sel {
+ u64 perf_sel_reg;
+ struct {
+ u64 perf_rsvd : 48,
+ perf_icct : 8,
+ perf_ippr1 : 4,
+ perf_ippr0 : 4;
+ } perf_sel_bits;
+} io_perf_sel_t;
+
+/* io_perf_cnt is to extract the count from the hub registers. Due to
+ hardware problems there is only one counter, not two. */
+
+typedef union io_perf_cnt {
+ u64 perf_cnt;
+ struct {
+ u64 perf_rsvd1 : 32,
+ perf_rsvd2 : 12,
+ perf_cnt : 20;
+ } perf_cnt_bits;
+} io_perf_cnt_t;
+
+#endif /* !__ASSEMBLY__ */
+
+
+#define LNK_STAT_WORKING 0x2
+
+#define IIO_LLP_CB_MAX 0xffff
+#define IIO_LLP_SN_MAX 0xffff
+
+/* IO PRB Entries */
+#define IIO_NUM_IPRBS (9)
+#define IIO_IOPRB_0 0x400198 /* PRB entry 0 */
+#define IIO_IOPRB_8 0x4001a0 /* PRB entry 8 */
+#define IIO_IOPRB_9 0x4001a8 /* PRB entry 9 */
+#define IIO_IOPRB_A 0x4001b0 /* PRB entry a */
+#define IIO_IOPRB_B 0x4001b8 /* PRB entry b */
+#define IIO_IOPRB_C 0x4001c0 /* PRB entry c */
+#define IIO_IOPRB_D 0x4001c8 /* PRB entry d */
+#define IIO_IOPRB_E 0x4001d0 /* PRB entry e */
+#define IIO_IOPRB_F 0x4001d8 /* PRB entry f */
+
+
+#define IIO_IXCC 0x4001e0 /* Crosstalk credit count timeout */
+#define IIO_IXTCC IIO_IXCC
+#define IIO_IMEM 0x4001e8 /* Miscellaneous Enable Mask */
+#define IIO_IXTT 0x4001f0 /* Crosstalk tail timeout */
+#define IIO_IECLR 0x4001f8 /* IO error clear */
+#define IIO_IBCN 0x400200 /* IO BTE CRB count */
+
+/*
+ * IIO_IMEM Register fields.
+ */
+#define IIO_IMEM_W0ESD 0x1 /* Widget 0 shut down due to error */
+#define IIO_IMEM_B0ESD (1 << 4) /* BTE 0 shut down due to error */
+#define IIO_IMEM_B1ESD (1 << 8) /* BTE 1 Shut down due to error */
+
+/* PIO Read address Table Entries */
+#define IIO_IPCA 0x400300 /* PRB Counter adjust */
+#define IIO_NUM_PRTES 8 /* Total number of PRB table entries */
+#define IIO_PRTE_0 0x400308 /* PIO Read address table entry 0 */
+#define IIO_PRTE(_x) (IIO_PRTE_0 + (8 * (_x)))
+#define IIO_WIDPRTE(x) IIO_PRTE(((x) - 8)) /* widget ID to its PRTE num */
+#define IIO_IPDR 0x400388 /* PIO table entry deallocation */
+#define IIO_ICDR 0x400390 /* CRB Entry Deallocation */
+#define IIO_IFDR 0x400398 /* IOQ FIFO Depth */
+#define IIO_IIAP 0x4003a0 /* IIQ Arbitration Parameters */
+#define IIO_IMMR IIO_IIAP
+#define IIO_ICMR 0x4003a8 /* CRB Management Register */
+#define IIO_ICCR 0x4003b0 /* CRB Control Register */
+#define IIO_ICTO 0x4003b8 /* CRB Time Out Register */
+#define IIO_ICTP 0x4003c0 /* CRB Time Out Prescalar */
+
+
+/*
+ * ICMR register fields
+ */
+#define IIO_ICMR_PC_VLD_SHFT 36
+#define IIO_ICMR_PC_VLD_MASK (0x7fffUL << IIO_ICMR_PC_VLD_SHFT)
+
+#define IIO_ICMR_CRB_VLD_SHFT 20
+#define IIO_ICMR_CRB_VLD_MASK (0x7fffUL << IIO_ICMR_CRB_VLD_SHFT)
+
+#define IIO_ICMR_FC_CNT_SHFT 16
+#define IIO_ICMR_FC_CNT_MASK (0xf << IIO_ICMR_FC_CNT_SHFT)
+
+#define IIO_ICMR_C_CNT_SHFT 4
+#define IIO_ICMR_C_CNT_MASK (0xf << IIO_ICMR_C_CNT_SHFT)
+
+#define IIO_ICMR_P_CNT_SHFT 0
+#define IIO_ICMR_P_CNT_MASK (0xf << IIO_ICMR_P_CNT_SHFT)
+
+#define IIO_ICMR_PRECISE (1UL << 52)
+#define IIO_ICMR_CLR_RPPD (1UL << 13)
+#define IIO_ICMR_CLR_RQPD (1UL << 12)
+
+/*
+ * IIO PIO Deallocation register field masks : (IIO_IPDR)
+ */
+#define IIO_IPDR_PND (1 << 4)
+
+/*
+ * IIO CRB deallocation register field masks: (IIO_ICDR)
+ */
+#define IIO_ICDR_PND (1 << 4)
+
+/*
+ * IIO CRB control register Fields: IIO_ICCR
+ */
+#define IIO_ICCR_PENDING (0x10000)
+#define IIO_ICCR_CMD_MASK (0xFF)
+#define IIO_ICCR_CMD_SHFT (7)
+#define IIO_ICCR_CMD_NOP (0x0) /* No Op */
+#define IIO_ICCR_CMD_WAKE (0x100) /* Reactivate CRB entry and process */
+#define IIO_ICCR_CMD_TIMEOUT (0x200) /* Make CRB timeout & mark invalid */
+#define IIO_ICCR_CMD_EJECT (0x400) /* Contents of entry written to memory
+ * via a WB
+ */
+#define IIO_ICCR_CMD_FLUSH (0x800)
+
+/*
+ * CRB manipulation macros
+ * The CRB macros are slightly complicated, since there are up to
+ * four registers associated with each CRB entry.
+ */
+#define IIO_NUM_CRBS 15 /* Number of CRBs */
+#define IIO_NUM_NORMAL_CRBS 12 /* Number of regular CRB entries */
+#define IIO_NUM_PC_CRBS 4 /* Number of partial cache CRBs */
+#define IIO_ICRB_OFFSET 8
+#define IIO_ICRB_0 0x400400
+/* XXX - This is now tuneable:
+ #define IIO_FIRST_PC_ENTRY 12
+ */
+
+#define IIO_ICRB_A(_x) (IIO_ICRB_0 + (4 * IIO_ICRB_OFFSET * (_x)))
+#define IIO_ICRB_B(_x) (IIO_ICRB_A(_x) + 1*IIO_ICRB_OFFSET)
+#define IIO_ICRB_C(_x) (IIO_ICRB_A(_x) + 2*IIO_ICRB_OFFSET)
+#define IIO_ICRB_D(_x) (IIO_ICRB_A(_x) + 3*IIO_ICRB_OFFSET)
+
+/* XXX - IBUE register coming for Hub 2 */
+
+/*
+ *
+ * CRB Register description.
+ *
+ * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
+ * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
+ * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
+ * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
+ * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING
+ *
+ * Many of the fields in CRB are status bits used by hardware
+ * for implementation of the protocol. It's very dangerous to
+ * mess around with the CRB registers.
+ *
+ * It's OK to read the CRB registers and try to make sense out of the
+ * fields in CRB.
+ *
+ * Updating CRB requires all activities in Hub IIO to be quiesced.
+ * otherwise, a write to CRB could corrupt other CRB entries.
+ * CRBs are here only as a back door peek to hub IIO's status.
+ * Quiescing implies no dmas no PIOs
+ * either directly from the cpu or from sn0net.
+ * this is not something that can be done easily. So, AVOID updating
+ * CRBs.
+ */
+
+/*
+ * Fields in CRB Register A
+ */
+#ifndef __ASSEMBLY__
+typedef union icrba_u {
+ u64 reg_value;
+ struct {
+ u64 resvd: 6,
+ stall_bte0: 1, /* Stall BTE 0 */
+ stall_bte1: 1, /* Stall BTE 1 */
+ error: 1, /* CRB has an error */
+ ecode: 3, /* Error Code */
+ lnetuce: 1, /* SN0net Uncorrectable error */
+ mark: 1, /* CRB Has been marked */
+ xerr: 1, /* Error bit set in xtalk header */
+ sidn: 4, /* SIDN field from xtalk */
+ tnum: 5, /* TNUM field in xtalk */
+ addr: 38, /* Address of request */
+ valid: 1, /* Valid status */
+ iow: 1; /* IO Write operation */
+ } icrba_fields_s;
+} icrba_t;
+
+/* This is an alternate typedef for the HUB1 CRB A in order to allow
+ runtime selection of the format based on the REV_ID field of the
+ NI_STATUS_REV_ID register. */
+typedef union h1_icrba_u {
+ u64 reg_value;
+
+ struct {
+ u64 resvd: 6,
+ unused: 1, /* Unused but RW!! */
+ error: 1, /* CRB has an error */
+ ecode: 4, /* Error Code */
+ lnetuce: 1, /* SN0net Uncorrectable error */
+ mark: 1, /* CRB Has been marked */
+ xerr: 1, /* Error bit set in xtalk header */
+ sidn: 4, /* SIDN field from xtalk */
+ tnum: 5, /* TNUM field in xtalk */
+ addr: 38, /* Address of request */
+ valid: 1, /* Valid status */
+ iow: 1; /* IO Write operation */
+ } h1_icrba_fields_s;
+} h1_icrba_t;
+
+/* XXX - Is this still right? Check the spec. */
+#define ICRBN_A_CERR_SHFT 54
+#define ICRBN_A_ERR_MASK 0x3ff
+
+#endif /* !__ASSEMBLY__ */
+
+#define IIO_ICRB_ADDR_SHFT 2 /* Shift to get proper address */
+
+/*
+ * values for "ecode" field
+ */
+#define IIO_ICRB_ECODE_DERR 0 /* Directory error due to IIO access */
+#define IIO_ICRB_ECODE_PERR 1 /* Poison error on IO access */
+#define IIO_ICRB_ECODE_WERR 2 /* Write error by IIO access
+ * e.g. WINV to a Read only line.
+ */
+#define IIO_ICRB_ECODE_AERR 3 /* Access error caused by IIO access */
+#define IIO_ICRB_ECODE_PWERR 4 /* Error on partial write */
+#define IIO_ICRB_ECODE_PRERR 5 /* Error on partial read */
+#define IIO_ICRB_ECODE_TOUT 6 /* CRB timeout before deallocating */
+#define IIO_ICRB_ECODE_XTERR 7 /* Incoming xtalk pkt had error bit */
+
+
+
+/*
+ * Fields in CRB Register B
+ */
+#ifndef __ASSEMBLY__
+typedef union icrbb_u {
+ u64 reg_value;
+ struct {
+ u64 rsvd1: 5,
+ btenum: 1, /* BTE to which entry belongs to */
+ cohtrans: 1, /* Coherent transaction */
+ xtsize: 2, /* Xtalk operation size
+ * 0: Double Word
+ * 1: 32 Bytes.
+ * 2: 128 Bytes,
+ * 3: Reserved.
+ */
+ srcnode: 9, /* Source Node ID */
+ srcinit: 2, /* Source Initiator:
+ * See below for field values.
+ */
+ useold: 1, /* Use OLD command for processing */
+ imsgtype: 2, /* Incoming message type
+ * see below for field values
+ */
+ imsg: 8, /* Incoming message */
+ initator: 3, /* Initiator of original request
+ * See below for field values.
+ */
+ reqtype: 5, /* Identifies type of request
+ * See below for field values.
+ */
+ rsvd2: 7,
+ ackcnt: 11, /* Invalidate ack count */
+ resp: 1, /* data response given to processor */
+ ack: 1, /* indicates data ack received */
+ hold: 1, /* entry is gathering inval acks */
+ wb_pend:1, /* waiting for writeback to complete */
+ intvn: 1, /* Intervention */
+ stall_ib: 1, /* Stall Ibuf (from crosstalk) */
+ stall_intr: 1; /* Stall internal interrupts */
+ } icrbb_field_s;
+} icrbb_t;
+
+/* This is an alternate typedef for the HUB1 CRB B in order to allow
+ runtime selection of the format based on the REV_ID field of the
+ NI_STATUS_REV_ID register. */
+typedef union h1_icrbb_u {
+ u64 reg_value;
+ struct {
+ u64 rsvd1: 5,
+ btenum: 1, /* BTE to which entry belongs to */
+ cohtrans: 1, /* Coherent transaction */
+ xtsize: 2, /* Xtalk operation size
+ * 0: Double Word
+ * 1: 32 Bytes.
+ * 2: 128 Bytes,
+ * 3: Reserved.
+ */
+ srcnode: 9, /* Source Node ID */
+ srcinit: 2, /* Source Initiator:
+ * See below for field values.
+ */
+ useold: 1, /* Use OLD command for processing */
+ imsgtype: 2, /* Incoming message type
+ * see below for field values
+ */
+ imsg: 8, /* Incoming message */
+ initator: 3, /* Initiator of original request
+ * See below for field values.
+ */
+ rsvd2: 1,
+ pcache: 1, /* entry belongs to partial cache */
+ reqtype: 5, /* Identifies type of request
+ * See below for field values.
+ */
+ stl_ib: 1, /* stall Ibus coming from xtalk */
+ stl_intr: 1, /* Stall internal interrupts */
+ stl_bte0: 1, /* Stall BTE 0 */
+ stl_bte1: 1, /* Stall BTE 1 */
+ intrvn: 1, /* Req was target of intervention */
+ ackcnt: 11, /* Invalidate ack count */
+ resp: 1, /* data response given to processor */
+ ack: 1, /* indicates data ack received */
+ hold: 1, /* entry is gathering inval acks */
+ wb_pend:1, /* waiting for writeback to complete */
+ sleep: 1, /* xtalk req sleeping till IO-sync */
+ pnd_reply: 1, /* replies not issed due to IOQ full */
+ pnd_req: 1; /* reqs not issued due to IOQ full */
+ } h1_icrbb_field_s;
+} h1_icrbb_t;
+
+
+#define b_imsgtype icrbb_field_s.imsgtype
+#define b_btenum icrbb_field_s.btenum
+#define b_cohtrans icrbb_field_s.cohtrans
+#define b_xtsize icrbb_field_s.xtsize
+#define b_srcnode icrbb_field_s.srcnode
+#define b_srcinit icrbb_field_s.srcinit
+#define b_imsgtype icrbb_field_s.imsgtype
+#define b_imsg icrbb_field_s.imsg
+#define b_initiator icrbb_field_s.initiator
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * values for field xtsize
+ */
+#define IIO_ICRB_XTSIZE_DW 0 /* Xtalk operation size is 8 bytes */
+#define IIO_ICRB_XTSIZE_32 1 /* Xtalk operation size is 32 bytes */
+#define IIO_ICRB_XTSIZE_128 2 /* Xtalk operation size is 128 bytes */
+
+/*
+ * values for field srcinit
+ */
+#define IIO_ICRB_PROC0 0 /* Source of request is Proc 0 */
+#define IIO_ICRB_PROC1 1 /* Source of request is Proc 1 */
+#define IIO_ICRB_GB_REQ 2 /* Source is Guaranteed BW request */
+#define IIO_ICRB_IO_REQ 3 /* Source is Normal IO request */
+
+/*
+ * Values for field imsgtype
+ */
+#define IIO_ICRB_IMSGT_XTALK 0 /* Incoming Meessage from Xtalk */
+#define IIO_ICRB_IMSGT_BTE 1 /* Incoming message from BTE */
+#define IIO_ICRB_IMSGT_SN0NET 2 /* Incoming message from SN0 net */
+#define IIO_ICRB_IMSGT_CRB 3 /* Incoming message from CRB ??? */
+
+/*
+ * values for field initiator.
+ */
+#define IIO_ICRB_INIT_XTALK 0 /* Message originated in xtalk */
+#define IIO_ICRB_INIT_BTE0 0x1 /* Message originated in BTE 0 */
+#define IIO_ICRB_INIT_SN0NET 0x2 /* Message originated in SN0net */
+#define IIO_ICRB_INIT_CRB 0x3 /* Message originated in CRB ? */
+#define IIO_ICRB_INIT_BTE1 0x5 /* MEssage originated in BTE 1 */
+
+/*
+ * Values for field reqtype.
+ */
+/* XXX - Need to fix this for Hub 2 */
+#define IIO_ICRB_REQ_DWRD 0 /* Request type double word */
+#define IIO_ICRB_REQ_QCLRD 1 /* Request is Qrtr Caceh line Rd */
+#define IIO_ICRB_REQ_BLKRD 2 /* Request is block read */
+#define IIO_ICRB_REQ_RSHU 6 /* Request is BTE block read */
+#define IIO_ICRB_REQ_REXU 7 /* request is BTE Excl Read */
+#define IIO_ICRB_REQ_RDEX 8 /* Request is Read Exclusive */
+#define IIO_ICRB_REQ_WINC 9 /* Request is Write Invalidate */
+#define IIO_ICRB_REQ_BWINV 10 /* Request is BTE Winv */
+#define IIO_ICRB_REQ_PIORD 11 /* Request is PIO read */
+#define IIO_ICRB_REQ_PIOWR 12 /* Request is PIO Write */
+#define IIO_ICRB_REQ_PRDM 13 /* Request is Fetch&Op */
+#define IIO_ICRB_REQ_PWRM 14 /* Request is Store &Op */
+#define IIO_ICRB_REQ_PTPWR 15 /* Request is Peer to peer */
+#define IIO_ICRB_REQ_WB 16 /* Request is Write back */
+#define IIO_ICRB_REQ_DEX 17 /* Retained DEX Cache line */
+
+/*
+ * Fields in CRB Register C
+ */
+
+#ifndef __ASSEMBLY__
+
+typedef union icrbc_s {
+ u64 reg_value;
+ struct {
+ u64 rsvd: 6,
+ sleep: 1,
+ pricnt: 4, /* Priority count sent with Read req */
+ pripsc: 4, /* Priority Pre scalar */
+ bteop: 1, /* BTE Operation */
+ push_be: 34, /* Push address Byte enable
+ * Holds push addr, if CRB is for BTE
+ * If CRB belongs to Partial cache,
+ * this contains byte enables bits
+ * ([47:46] = 0)
+ */
+ suppl: 11, /* Supplemental field */
+ barrop: 1, /* Barrier Op bit set in xtalk req */
+ doresp: 1, /* Xtalk req needs a response */
+ gbr: 1; /* GBR bit set in xtalk packet */
+ } icrbc_field_s;
+} icrbc_t;
+
+#define c_pricnt icrbc_field_s.pricnt
+#define c_pripsc icrbc_field_s.pripsc
+#define c_bteop icrbc_field_s.bteop
+#define c_bteaddr icrbc_field_s.push_be /* push_be field has 2 names */
+#define c_benable icrbc_field_s.push_be /* push_be field has 2 names */
+#define c_suppl icrbc_field_s.suppl
+#define c_barrop icrbc_field_s.barrop
+#define c_doresp icrbc_field_s.doresp
+#define c_gbr icrbc_field_s.gbr
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * Fields in CRB Register D
+ */
+
+#ifndef __ASSEMBLY__
+typedef union icrbd_s {
+ u64 reg_value;
+ struct {
+ u64 rsvd: 38,
+ toutvld: 1, /* Timeout in progress for this CRB */
+ ctxtvld: 1, /* Context field below is valid */
+ rsvd2: 1,
+ context: 15, /* Bit vector:
+ * Has a bit set for each CRB entry
+ * which needs to be deallocated
+ * before this CRB entry is processed.
+ * Set only for barrier operations.
+ */
+ timeout: 8; /* Timeout Upper 8 bits */
+ } icrbd_field_s;
+} icrbd_t;
+
+#define icrbd_toutvld icrbd_field_s.toutvld
+#define icrbd_ctxtvld icrbd_field_s.ctxtvld
+#define icrbd_context icrbd_field_s.context
+
+
+typedef union hubii_ifdr_u {
+ u64 hi_ifdr_value;
+ struct {
+ u64 ifdr_rsvd: 49,
+ ifdr_maxrp: 7,
+ ifdr_rsvd1: 1,
+ ifdr_maxrq: 7;
+ } hi_ifdr_fields;
+} hubii_ifdr_t;
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * Hardware designed names for the BTE control registers.
+ */
+#define IIO_IBLS_0 0x410000 /* BTE length/status 0 */
+#define IIO_IBSA_0 0x410008 /* BTE source address 0 */
+#define IIO_IBDA_0 0x410010 /* BTE destination address 0 */
+#define IIO_IBCT_0 0x410018 /* BTE control/terminate 0 */
+#define IIO_IBNA_0 0x410020 /* BTE notification address 0 */
+#define IIO_IBNR_0 IIO_IBNA_0
+#define IIO_IBIA_0 0x410028 /* BTE interrupt address 0 */
+
+#define IIO_IBLS_1 0x420000 /* BTE length/status 1 */
+#define IIO_IBSA_1 0x420008 /* BTE source address 1 */
+#define IIO_IBDA_1 0x420010 /* BTE destination address 1 */
+#define IIO_IBCT_1 0x420018 /* BTE control/terminate 1 */
+#define IIO_IBNA_1 0x420020 /* BTE notification address 1 */
+#define IIO_IBNR_1 IIO_IBNA_1
+#define IIO_IBIA_1 0x420028 /* BTE interrupt address 1 */
+
+/*
+ * More miscellaneous registers
+ */
+#define IIO_IPCR 0x430000 /* Performance Control */
+#define IIO_IPPR 0x430008 /* Performance Profiling */
+
+/*
+ * IO Error Clear register bit field definitions
+ */
+#define IECLR_BTE1 (1 << 18) /* clear bte error 1 ??? */
+#define IECLR_BTE0 (1 << 17) /* clear bte error 0 ??? */
+#define IECLR_CRAZY (1 << 16) /* clear crazy bit in wstat reg */
+#define IECLR_PRB_F (1 << 15) /* clear err bit in PRB_F reg */
+#define IECLR_PRB_E (1 << 14) /* clear err bit in PRB_E reg */
+#define IECLR_PRB_D (1 << 13) /* clear err bit in PRB_D reg */
+#define IECLR_PRB_C (1 << 12) /* clear err bit in PRB_C reg */
+#define IECLR_PRB_B (1 << 11) /* clear err bit in PRB_B reg */
+#define IECLR_PRB_A (1 << 10) /* clear err bit in PRB_A reg */
+#define IECLR_PRB_9 (1 << 9) /* clear err bit in PRB_9 reg */
+#define IECLR_PRB_8 (1 << 8) /* clear err bit in PRB_8 reg */
+#define IECLR_PRB_0 (1 << 0) /* clear err bit in PRB_0 reg */
+
+/*
+ * IO PIO Read Table Entry format
+ */
+
+#ifndef __ASSEMBLY__
+
+typedef union iprte_a {
+ u64 entry;
+ struct {
+ u64 rsvd1 : 7, /* Reserved field */
+ valid : 1, /* Maps to a timeout entry */
+ rsvd2 : 1,
+ srcnode : 9, /* Node which did this PIO */
+ initiator : 2, /* If T5A or T5B or IO */
+ rsvd3 : 3,
+ addr : 38, /* Physical address of PIO */
+ rsvd4 : 3;
+ } iprte_fields;
+} iprte_a_t;
+
+#define iprte_valid iprte_fields.valid
+#define iprte_timeout iprte_fields.timeout
+#define iprte_srcnode iprte_fields.srcnode
+#define iprte_init iprte_fields.initiator
+#define iprte_addr iprte_fields.addr
+
+#endif /* !__ASSEMBLY__ */
+
+#define IPRTE_ADDRSHFT 3
+
+/*
+ * Hub IIO PRB Register format.
+ */
+
+#ifndef __ASSEMBLY__
+/*
+ * Note: Fields bnakctr, anakctr, xtalkctrmode, ovflow fields are
+ * "Status" fields, and should only be used in case of clean up after errors.
+ */
+
+typedef union iprb_u {
+ u64 reg_value;
+ struct {
+ u64 rsvd1: 15,
+ error: 1, /* Widget rcvd wr resp pkt w/ error */
+ ovflow: 5, /* Overflow count. perf measurement */
+ fire_and_forget: 1, /* Launch Write without response */
+ mode: 2, /* Widget operation Mode */
+ rsvd2: 2,
+ bnakctr: 14,
+ rsvd3: 2,
+ anakctr: 14,
+ xtalkctr: 8;
+ } iprb_fields_s;
+} iprb_t;
+
+#define iprb_regval reg_value
+
+#define iprb_error iprb_fields_s.error
+#define iprb_ovflow iprb_fields_s.ovflow
+#define iprb_ff iprb_fields_s.fire_and_forget
+#define iprb_mode iprb_fields_s.mode
+#define iprb_bnakctr iprb_fields_s.bnakctr
+#define iprb_anakctr iprb_fields_s.anakctr
+#define iprb_xtalkctr iprb_fields_s.xtalkctr
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * values for mode field in iprb_t.
+ * For details of the meanings of NAK and Accept, refer the PIO flow
+ * document
+ */
+#define IPRB_MODE_NORMAL (0)
+#define IPRB_MODE_COLLECT_A (1) /* PRB in collect A mode */
+#define IPRB_MODE_SERVICE_A (2) /* NAK B and Accept A */
+#define IPRB_MODE_SERVICE_B (3) /* NAK A and Accept B */
+
+/*
+ * IO CRB entry C_A to E_A : Partial (cache) CRBS
+ */
+#ifndef __ASSEMBLY__
+typedef union icrbp_a {
+ u64 ip_reg; /* the entire register value */
+ struct {
+ u64 error: 1, /* 63, error occurred */
+ ln_uce: 1, /* 62: uncorrectable memory */
+ ln_ae: 1, /* 61: protection violation */
+ ln_werr:1, /* 60: write access error */
+ ln_aerr:1, /* 59: sn0net: Address error */
+ ln_perr:1, /* 58: sn0net: poison error */
+ timeout:1, /* 57: CRB timed out */
+ l_bdpkt:1, /* 56: truncated pkt on sn0net */
+ c_bdpkt:1, /* 55: truncated pkt on xtalk */
+ c_err: 1, /* 54: incoming xtalk req, err set*/
+ rsvd1: 12, /* 53-42: reserved */
+ valid: 1, /* 41: Valid status */
+ sidn: 4, /* 40-37: SIDN field of xtalk rqst */
+ tnum: 5, /* 36-32: TNUM of xtalk request */
+ bo: 1, /* 31: barrier op set in xtalk rqst*/
+ resprqd:1, /* 30: xtalk rqst requires response*/
+ gbr: 1, /* 29: gbr bit set in xtalk rqst */
+ size: 2, /* 28-27: size of xtalk request */
+ excl: 4, /* 26-23: exclusive bit(s) */
+ stall: 3, /* 22-20: stall (xtalk, bte 0/1) */
+ intvn: 1, /* 19: rqst target of intervention*/
+ resp: 1, /* 18: Data response given to t5 */
+ ack: 1, /* 17: Data ack received. */
+ hold: 1, /* 16: crb gathering invalidate acks*/
+ wb: 1, /* 15: writeback pending. */
+ ack_cnt:11, /* 14-04: counter of invalidate acks*/
+ tscaler:4; /* 03-00: Timeout prescaler */
+ } ip_fmt;
+} icrbp_a_t;
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * A couple of defines to go with the above structure.
+ */
+#define ICRBP_A_CERR_SHFT 54
+#define ICRBP_A_ERR_MASK 0x3ff
+
+#ifndef __ASSEMBLY__
+typedef union hubii_idsr {
+ u64 iin_reg;
+ struct {
+ u64 rsvd1 : 35,
+ isent : 1,
+ rsvd2 : 3,
+ ienable: 1,
+ rsvd : 7,
+ node : 9,
+ rsvd4 : 1,
+ level : 7;
+ } iin_fmt;
+} hubii_idsr_t;
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * IO BTE Length/Status (IIO_IBLS) register bit field definitions
+ */
+#define IBLS_BUSY (0x1 << 20)
+#define IBLS_ERROR_SHFT 16
+#define IBLS_ERROR (0x1 << IBLS_ERROR_SHFT)
+#define IBLS_LENGTH_MASK 0xffff
+
+/*
+ * IO BTE Control/Terminate register (IBCT) register bit field definitions
+ */
+#define IBCT_POISON (0x1 << 8)
+#define IBCT_NOTIFY (0x1 << 4)
+#define IBCT_ZFIL_MODE (0x1 << 0)
+
+/*
+ * IO BTE Interrupt Address Register (IBIA) register bit field definitions
+ */
+#define IBIA_LEVEL_SHFT 16
+#define IBIA_LEVEL_MASK (0x7f << IBIA_LEVEL_SHFT)
+#define IBIA_NODE_ID_SHFT 0
+#define IBIA_NODE_ID_MASK (0x1ff)
+
+/*
+ * Miscellaneous hub constants
+ */
+
+/* Number of widgets supported by hub */
+#define HUB_NUM_WIDGET 9
+#define HUB_WIDGET_ID_MIN 0x8
+#define HUB_WIDGET_ID_MAX 0xf
+
+#define HUB_WIDGET_PART_NUM 0xc101
+#define MAX_HUBS_PER_XBOW 2
+
+/*
+ * Get a hub's widget id from widget control register
+ */
+#define IIO_WCR_WID_GET(nasid) (REMOTE_HUB_L(nasid, III_WCR) & 0xf)
+#define IIO_WST_ERROR_MASK (UINT64_CAST 1 << 32) /* Widget status error */
+
+/*
+ * Number of credits Hub widget has while sending req/response to
+ * xbow.
+ * Value of 3 is required by Xbow 1.1
+ * We may be able to increase this to 4 with Xbow 1.2.
+ */
+#define HUBII_XBOW_CREDIT 3
+#define HUBII_XBOW_REV2_CREDIT 4
+
+#endif /* _ASM_SGI_SN_SN0_HUBIO_H */
Code Review / kvmfornfv.git / blobdiff