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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/fddi/defza.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/fddi/defza.h')
-rw-r--r--drivers/net/fddi/defza.h792
1 files changed, 792 insertions, 0 deletions
diff --git a/drivers/net/fddi/defza.h b/drivers/net/fddi/defza.h
new file mode 100644
index 000000000..93bda61be
--- /dev/null
+++ b/drivers/net/fddi/defza.h
@@ -0,0 +1,792 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* FDDI network adapter driver for DEC FDDIcontroller 700/700-C devices.
+ *
+ * Copyright (c) 2018 Maciej W. Rozycki
+ *
+ * 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.
+ *
+ * References:
+ *
+ * Dave Sawyer & Phil Weeks & Frank Itkowsky,
+ * "DEC FDDIcontroller 700 Port Specification",
+ * Revision 1.1, Digital Equipment Corporation
+ */
+
+#include <linux/compiler.h>
+#include <linux/if_fddi.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/types.h>
+
+/* IOmem register offsets. */
+#define FZA_REG_BASE 0x100000 /* register base address */
+#define FZA_REG_RESET 0x100200 /* reset, r/w */
+#define FZA_REG_INT_EVENT 0x100400 /* interrupt event, r/w1c */
+#define FZA_REG_STATUS 0x100402 /* status, r/o */
+#define FZA_REG_INT_MASK 0x100404 /* interrupt mask, r/w */
+#define FZA_REG_CONTROL_A 0x100500 /* control A, r/w1s */
+#define FZA_REG_CONTROL_B 0x100502 /* control B, r/w */
+
+/* Reset register constants. Bits 1:0 are r/w, others are fixed at 0. */
+#define FZA_RESET_DLU 0x0002 /* OR with INIT to blast flash memory */
+#define FZA_RESET_INIT 0x0001 /* switch into the reset state */
+#define FZA_RESET_CLR 0x0000 /* run self-test and return to work */
+
+/* Interrupt event register constants. All bits are r/w1c. */
+#define FZA_EVENT_DLU_DONE 0x0800 /* flash memory write complete */
+#define FZA_EVENT_FLUSH_TX 0x0400 /* transmit ring flush request */
+#define FZA_EVENT_PM_PARITY_ERR 0x0200 /* onboard packet memory parity err */
+#define FZA_EVENT_HB_PARITY_ERR 0x0100 /* host bus parity error */
+#define FZA_EVENT_NXM_ERR 0x0080 /* non-existent memory access error;
+ * also raised for unaligned and
+ * unsupported partial-word accesses
+ */
+#define FZA_EVENT_LINK_ST_CHG 0x0040 /* link status change */
+#define FZA_EVENT_STATE_CHG 0x0020 /* adapter state change */
+#define FZA_EVENT_UNS_POLL 0x0010 /* unsolicited event service request */
+#define FZA_EVENT_CMD_DONE 0x0008 /* command done ack */
+#define FZA_EVENT_SMT_TX_POLL 0x0004 /* SMT frame transmit request */
+#define FZA_EVENT_RX_POLL 0x0002 /* receive request (packet avail.) */
+#define FZA_EVENT_TX_DONE 0x0001 /* RMC transmit done ack */
+
+/* Status register constants. All bits are r/o. */
+#define FZA_STATUS_DLU_SHIFT 0xc /* down line upgrade status bits */
+#define FZA_STATUS_DLU_MASK 0x03
+#define FZA_STATUS_LINK_SHIFT 0xb /* link status bits */
+#define FZA_STATUS_LINK_MASK 0x01
+#define FZA_STATUS_STATE_SHIFT 0x8 /* adapter state bits */
+#define FZA_STATUS_STATE_MASK 0x07
+#define FZA_STATUS_HALT_SHIFT 0x0 /* halt reason bits */
+#define FZA_STATUS_HALT_MASK 0xff
+#define FZA_STATUS_TEST_SHIFT 0x0 /* test failure bits */
+#define FZA_STATUS_TEST_MASK 0xff
+
+#define FZA_STATUS_GET_DLU(x) (((x) >> FZA_STATUS_DLU_SHIFT) & \
+ FZA_STATUS_DLU_MASK)
+#define FZA_STATUS_GET_LINK(x) (((x) >> FZA_STATUS_LINK_SHIFT) & \
+ FZA_STATUS_LINK_MASK)
+#define FZA_STATUS_GET_STATE(x) (((x) >> FZA_STATUS_STATE_SHIFT) & \
+ FZA_STATUS_STATE_MASK)
+#define FZA_STATUS_GET_HALT(x) (((x) >> FZA_STATUS_HALT_SHIFT) & \
+ FZA_STATUS_HALT_MASK)
+#define FZA_STATUS_GET_TEST(x) (((x) >> FZA_STATUS_TEST_SHIFT) & \
+ FZA_STATUS_TEST_MASK)
+
+#define FZA_DLU_FAILURE 0x0 /* DLU catastrophic error; brain dead */
+#define FZA_DLU_ERROR 0x1 /* DLU error; old firmware intact */
+#define FZA_DLU_SUCCESS 0x2 /* DLU OK; new firmware loaded */
+
+#define FZA_LINK_OFF 0x0 /* link unavailable */
+#define FZA_LINK_ON 0x1 /* link available */
+
+#define FZA_STATE_RESET 0x0 /* resetting */
+#define FZA_STATE_UNINITIALIZED 0x1 /* after a reset */
+#define FZA_STATE_INITIALIZED 0x2 /* initialized */
+#define FZA_STATE_RUNNING 0x3 /* running (link active) */
+#define FZA_STATE_MAINTENANCE 0x4 /* running (link looped back) */
+#define FZA_STATE_HALTED 0x5 /* halted (error condition) */
+
+#define FZA_HALT_UNKNOWN 0x00 /* unknown reason */
+#define FZA_HALT_HOST 0x01 /* host-directed HALT */
+#define FZA_HALT_HB_PARITY 0x02 /* host bus parity error */
+#define FZA_HALT_NXM 0x03 /* adapter non-existent memory ref. */
+#define FZA_HALT_SW 0x04 /* adapter software fault */
+#define FZA_HALT_HW 0x05 /* adapter hardware fault */
+#define FZA_HALT_PC_TRACE 0x06 /* PC Trace path test */
+#define FZA_HALT_DLSW 0x07 /* data link software fault */
+#define FZA_HALT_DLHW 0x08 /* data link hardware fault */
+
+#define FZA_TEST_FATAL 0x00 /* self-test catastrophic failure */
+#define FZA_TEST_68K 0x01 /* 68000 CPU */
+#define FZA_TEST_SRAM_BWADDR 0x02 /* SRAM byte/word address */
+#define FZA_TEST_SRAM_DBUS 0x03 /* SRAM data bus */
+#define FZA_TEST_SRAM_STUCK1 0x04 /* SRAM stuck-at range 1 */
+#define FZA_TEST_SRAM_STUCK2 0x05 /* SRAM stuck-at range 2 */
+#define FZA_TEST_SRAM_COUPL1 0x06 /* SRAM coupling range 1 */
+#define FZA_TEST_SRAM_COUPL2 0x07 /* SRAM coupling */
+#define FZA_TEST_FLASH_CRC 0x08 /* Flash CRC */
+#define FZA_TEST_ROM 0x09 /* option ROM */
+#define FZA_TEST_PHY_CSR 0x0a /* PHY CSR */
+#define FZA_TEST_MAC_BIST 0x0b /* MAC BiST */
+#define FZA_TEST_MAC_CSR 0x0c /* MAC CSR */
+#define FZA_TEST_MAC_ADDR_UNIQ 0x0d /* MAC unique address */
+#define FZA_TEST_ELM_BIST 0x0e /* ELM BiST */
+#define FZA_TEST_ELM_CSR 0x0f /* ELM CSR */
+#define FZA_TEST_ELM_ADDR_UNIQ 0x10 /* ELM unique address */
+#define FZA_TEST_CAM 0x11 /* CAM */
+#define FZA_TEST_NIROM 0x12 /* NI ROM checksum */
+#define FZA_TEST_SC_LOOP 0x13 /* SC loopback packet */
+#define FZA_TEST_LM_LOOP 0x14 /* LM loopback packet */
+#define FZA_TEST_EB_LOOP 0x15 /* EB loopback packet */
+#define FZA_TEST_SC_LOOP_BYPS 0x16 /* SC bypass loopback packet */
+#define FZA_TEST_LM_LOOP_LOCAL 0x17 /* LM local loopback packet */
+#define FZA_TEST_EB_LOOP_LOCAL 0x18 /* EB local loopback packet */
+#define FZA_TEST_CDC_LOOP 0x19 /* CDC loopback packet */
+#define FZA_TEST_FIBER_LOOP 0x1A /* FIBER loopback packet */
+#define FZA_TEST_CAM_MATCH_LOOP 0x1B /* CAM match packet loopback */
+#define FZA_TEST_68K_IRQ_STUCK 0x1C /* 68000 interrupt line stuck-at */
+#define FZA_TEST_IRQ_PRESENT 0x1D /* interrupt present register */
+#define FZA_TEST_RMC_BIST 0x1E /* RMC BiST */
+#define FZA_TEST_RMC_CSR 0x1F /* RMC CSR */
+#define FZA_TEST_RMC_ADDR_UNIQ 0x20 /* RMC unique address */
+#define FZA_TEST_PM_DPATH 0x21 /* packet memory data path */
+#define FZA_TEST_PM_ADDR 0x22 /* packet memory address */
+#define FZA_TEST_RES_23 0x23 /* reserved */
+#define FZA_TEST_PM_DESC 0x24 /* packet memory descriptor */
+#define FZA_TEST_PM_OWN 0x25 /* packet memory own bit */
+#define FZA_TEST_PM_PARITY 0x26 /* packet memory parity */
+#define FZA_TEST_PM_BSWAP 0x27 /* packet memory byte swap */
+#define FZA_TEST_PM_WSWAP 0x28 /* packet memory word swap */
+#define FZA_TEST_PM_REF 0x29 /* packet memory refresh */
+#define FZA_TEST_PM_CSR 0x2A /* PM CSR */
+#define FZA_TEST_PORT_STATUS 0x2B /* port status register */
+#define FZA_TEST_HOST_IRQMASK 0x2C /* host interrupt mask */
+#define FZA_TEST_TIMER_IRQ1 0x2D /* RTOS timer */
+#define FZA_TEST_FORCE_IRQ1 0x2E /* force RTOS IRQ1 */
+#define FZA_TEST_TIMER_IRQ5 0x2F /* IRQ5 backoff timer */
+#define FZA_TEST_FORCE_IRQ5 0x30 /* force IRQ5 */
+#define FZA_TEST_RES_31 0x31 /* reserved */
+#define FZA_TEST_IC_PRIO 0x32 /* interrupt controller priority */
+#define FZA_TEST_PM_FULL 0x33 /* full packet memory */
+#define FZA_TEST_PMI_DMA 0x34 /* PMI DMA */
+
+/* Interrupt mask register constants. All bits are r/w. */
+#define FZA_MASK_RESERVED 0xf000 /* unused */
+#define FZA_MASK_DLU_DONE 0x0800 /* flash memory write complete */
+#define FZA_MASK_FLUSH_TX 0x0400 /* transmit ring flush request */
+#define FZA_MASK_PM_PARITY_ERR 0x0200 /* onboard packet memory parity error
+ */
+#define FZA_MASK_HB_PARITY_ERR 0x0100 /* host bus parity error */
+#define FZA_MASK_NXM_ERR 0x0080 /* adapter non-existent memory
+ * reference
+ */
+#define FZA_MASK_LINK_ST_CHG 0x0040 /* link status change */
+#define FZA_MASK_STATE_CHG 0x0020 /* adapter state change */
+#define FZA_MASK_UNS_POLL 0x0010 /* unsolicited event service request */
+#define FZA_MASK_CMD_DONE 0x0008 /* command ring entry processed */
+#define FZA_MASK_SMT_TX_POLL 0x0004 /* SMT frame transmit request */
+#define FZA_MASK_RCV_POLL 0x0002 /* receive request (packet available)
+ */
+#define FZA_MASK_TX_DONE 0x0001 /* RMC transmit done acknowledge */
+
+/* Which interrupts to receive: 0/1 is mask/unmask. */
+#define FZA_MASK_NONE 0x0000
+#define FZA_MASK_NORMAL \
+ ((~(FZA_MASK_RESERVED | FZA_MASK_DLU_DONE | \
+ FZA_MASK_PM_PARITY_ERR | FZA_MASK_HB_PARITY_ERR | \
+ FZA_MASK_NXM_ERR)) & 0xffff)
+
+/* Control A register constants. */
+#define FZA_CONTROL_A_HB_PARITY_ERR 0x8000 /* host bus parity error */
+#define FZA_CONTROL_A_NXM_ERR 0x4000 /* adapter non-existent memory
+ * reference
+ */
+#define FZA_CONTROL_A_SMT_RX_OVFL 0x0040 /* SMT receive overflow */
+#define FZA_CONTROL_A_FLUSH_DONE 0x0020 /* flush tx request complete */
+#define FZA_CONTROL_A_SHUT 0x0010 /* turn the interface off */
+#define FZA_CONTROL_A_HALT 0x0008 /* halt the controller */
+#define FZA_CONTROL_A_CMD_POLL 0x0004 /* command ring poll */
+#define FZA_CONTROL_A_SMT_RX_POLL 0x0002 /* SMT receive ring poll */
+#define FZA_CONTROL_A_TX_POLL 0x0001 /* transmit poll */
+
+/* Control B register constants. All bits are r/w.
+ *
+ * Possible values:
+ * 0x0000 after booting into REX,
+ * 0x0003 after issuing `boot #/mop'.
+ */
+#define FZA_CONTROL_B_CONSOLE 0x0002 /* OR with DRIVER for console
+ * (TC firmware) mode
+ */
+#define FZA_CONTROL_B_DRIVER 0x0001 /* driver mode */
+#define FZA_CONTROL_B_IDLE 0x0000 /* no driver installed */
+
+#define FZA_RESET_PAD \
+ (FZA_REG_RESET - FZA_REG_BASE)
+#define FZA_INT_EVENT_PAD \
+ (FZA_REG_INT_EVENT - FZA_REG_RESET - sizeof(u16))
+#define FZA_CONTROL_A_PAD \
+ (FZA_REG_CONTROL_A - FZA_REG_INT_MASK - sizeof(u16))
+
+/* Layout of registers. */
+struct fza_regs {
+ u8 pad0[FZA_RESET_PAD];
+ u16 reset; /* reset register */
+ u8 pad1[FZA_INT_EVENT_PAD];
+ u16 int_event; /* interrupt event register */
+ u16 status; /* status register */
+ u16 int_mask; /* interrupt mask register */
+ u8 pad2[FZA_CONTROL_A_PAD];
+ u16 control_a; /* control A register */
+ u16 control_b; /* control B register */
+};
+
+/* Command descriptor ring entry. */
+struct fza_ring_cmd {
+ u32 cmd_own; /* bit 31: ownership, bits [30:0]: command */
+ u32 stat; /* command status */
+ u32 buffer; /* address of the buffer in the FZA space */
+ u32 pad0;
+};
+
+#define FZA_RING_CMD 0x200400 /* command ring address */
+#define FZA_RING_CMD_SIZE 0x40 /* command descriptor ring
+ * size
+ */
+/* Command constants. */
+#define FZA_RING_CMD_MASK 0x7fffffff
+#define FZA_RING_CMD_NOP 0x00000000 /* nop */
+#define FZA_RING_CMD_INIT 0x00000001 /* initialize */
+#define FZA_RING_CMD_MODCAM 0x00000002 /* modify CAM */
+#define FZA_RING_CMD_PARAM 0x00000003 /* set system parameters */
+#define FZA_RING_CMD_MODPROM 0x00000004 /* modify promiscuous mode */
+#define FZA_RING_CMD_SETCHAR 0x00000005 /* set link characteristics */
+#define FZA_RING_CMD_RDCNTR 0x00000006 /* read counters */
+#define FZA_RING_CMD_STATUS 0x00000007 /* get link status */
+#define FZA_RING_CMD_RDCAM 0x00000008 /* read CAM */
+
+/* Command status constants. */
+#define FZA_RING_STAT_SUCCESS 0x00000000
+
+/* Unsolicited event descriptor ring entry. */
+struct fza_ring_uns {
+ u32 own; /* bit 31: ownership, bits [30:0]: reserved */
+ u32 id; /* event ID */
+ u32 buffer; /* address of the buffer in the FZA space */
+ u32 pad0; /* reserved */
+};
+
+#define FZA_RING_UNS 0x200800 /* unsolicited ring address */
+#define FZA_RING_UNS_SIZE 0x40 /* unsolicited descriptor ring
+ * size
+ */
+/* Unsolicited event constants. */
+#define FZA_RING_UNS_UND 0x00000000 /* undefined event ID */
+#define FZA_RING_UNS_INIT_IN 0x00000001 /* ring init initiated */
+#define FZA_RING_UNS_INIT_RX 0x00000002 /* ring init received */
+#define FZA_RING_UNS_BEAC_IN 0x00000003 /* ring beaconing initiated */
+#define FZA_RING_UNS_DUP_ADDR 0x00000004 /* duplicate address detected */
+#define FZA_RING_UNS_DUP_TOK 0x00000005 /* duplicate token detected */
+#define FZA_RING_UNS_PURG_ERR 0x00000006 /* ring purger error */
+#define FZA_RING_UNS_STRIP_ERR 0x00000007 /* bridge strip error */
+#define FZA_RING_UNS_OP_OSC 0x00000008 /* ring op oscillation */
+#define FZA_RING_UNS_BEAC_RX 0x00000009 /* directed beacon received */
+#define FZA_RING_UNS_PCT_IN 0x0000000a /* PC trace initiated */
+#define FZA_RING_UNS_PCT_RX 0x0000000b /* PC trace received */
+#define FZA_RING_UNS_TX_UNDER 0x0000000c /* transmit underrun */
+#define FZA_RING_UNS_TX_FAIL 0x0000000d /* transmit failure */
+#define FZA_RING_UNS_RX_OVER 0x0000000e /* receive overrun */
+
+/* RMC (Ring Memory Control) transmit descriptor ring entry. */
+struct fza_ring_rmc_tx {
+ u32 rmc; /* RMC information */
+ u32 avl; /* available for host (unused by RMC) */
+ u32 own; /* bit 31: ownership, bits [30:0]: reserved */
+ u32 pad0; /* reserved */
+};
+
+#define FZA_TX_BUFFER_ADDR(x) (0x200000 | (((x) & 0xffff) << 5))
+#define FZA_TX_BUFFER_SIZE 512
+struct fza_buffer_tx {
+ u32 data[FZA_TX_BUFFER_SIZE / sizeof(u32)];
+};
+
+/* Transmit ring RMC constants. */
+#define FZA_RING_TX_SOP 0x80000000 /* start of packet */
+#define FZA_RING_TX_EOP 0x40000000 /* end of packet */
+#define FZA_RING_TX_DTP 0x20000000 /* discard this packet */
+#define FZA_RING_TX_VBC 0x10000000 /* valid buffer byte count */
+#define FZA_RING_TX_DCC_MASK 0x0f000000 /* DMA completion code */
+#define FZA_RING_TX_DCC_SUCCESS 0x01000000 /* transmit succeeded */
+#define FZA_RING_TX_DCC_DTP_SOP 0x02000000 /* DTP set at SOP */
+#define FZA_RING_TX_DCC_DTP 0x04000000 /* DTP set within packet */
+#define FZA_RING_TX_DCC_ABORT 0x05000000 /* MAC-requested abort */
+#define FZA_RING_TX_DCC_PARITY 0x06000000 /* xmit data parity error */
+#define FZA_RING_TX_DCC_UNDRRUN 0x07000000 /* transmit underrun */
+#define FZA_RING_TX_XPO_MASK 0x003fe000 /* transmit packet offset */
+
+/* Host receive descriptor ring entry. */
+struct fza_ring_hst_rx {
+ u32 buf0_own; /* bit 31: ownership, bits [30:23]: unused,
+ * bits [22:0]: right-shifted address of the
+ * buffer in system memory (low buffer)
+ */
+ u32 buffer1; /* bits [31:23]: unused,
+ * bits [22:0]: right-shifted address of the
+ * buffer in system memory (high buffer)
+ */
+ u32 rmc; /* RMC information */
+ u32 pad0;
+};
+
+#define FZA_RX_BUFFER_SIZE (4096 + 512) /* buffer length */
+
+/* Receive ring RMC constants. */
+#define FZA_RING_RX_SOP 0x80000000 /* start of packet */
+#define FZA_RING_RX_EOP 0x40000000 /* end of packet */
+#define FZA_RING_RX_FSC_MASK 0x38000000 /* # of frame status bits */
+#define FZA_RING_RX_FSB_MASK 0x07c00000 /* frame status bits */
+#define FZA_RING_RX_FSB_ERR 0x04000000 /* error detected */
+#define FZA_RING_RX_FSB_ADDR 0x02000000 /* address recognized */
+#define FZA_RING_RX_FSB_COP 0x01000000 /* frame copied */
+#define FZA_RING_RX_FSB_F0 0x00800000 /* first additional flag */
+#define FZA_RING_RX_FSB_F1 0x00400000 /* second additional flag */
+#define FZA_RING_RX_BAD 0x00200000 /* bad packet */
+#define FZA_RING_RX_CRC 0x00100000 /* CRC error */
+#define FZA_RING_RX_RRR_MASK 0x000e0000 /* MAC receive status bits */
+#define FZA_RING_RX_RRR_OK 0x00000000 /* receive OK */
+#define FZA_RING_RX_RRR_SADDR 0x00020000 /* source address matched */
+#define FZA_RING_RX_RRR_DADDR 0x00040000 /* dest address not matched */
+#define FZA_RING_RX_RRR_ABORT 0x00060000 /* RMC abort */
+#define FZA_RING_RX_RRR_LENGTH 0x00080000 /* invalid length */
+#define FZA_RING_RX_RRR_FRAG 0x000a0000 /* fragment */
+#define FZA_RING_RX_RRR_FORMAT 0x000c0000 /* format error */
+#define FZA_RING_RX_RRR_RESET 0x000e0000 /* MAC reset */
+#define FZA_RING_RX_DA_MASK 0x00018000 /* daddr match status bits */
+#define FZA_RING_RX_DA_NONE 0x00000000 /* no match */
+#define FZA_RING_RX_DA_PROM 0x00008000 /* promiscuous match */
+#define FZA_RING_RX_DA_CAM 0x00010000 /* CAM entry match */
+#define FZA_RING_RX_DA_LOCAL 0x00018000 /* link addr or LLC bcast */
+#define FZA_RING_RX_SA_MASK 0x00006000 /* saddr match status bits */
+#define FZA_RING_RX_SA_NONE 0x00000000 /* no match */
+#define FZA_RING_RX_SA_ALIAS 0x00002000 /* alias address match */
+#define FZA_RING_RX_SA_CAM 0x00004000 /* CAM entry match */
+#define FZA_RING_RX_SA_LOCAL 0x00006000 /* link address match */
+
+/* SMT (Station Management) transmit/receive descriptor ring entry. */
+struct fza_ring_smt {
+ u32 own; /* bit 31: ownership, bits [30:0]: unused */
+ u32 rmc; /* RMC information */
+ u32 buffer; /* address of the buffer */
+ u32 pad0; /* reserved */
+};
+
+/* Ownership constants.
+ *
+ * Only an owner is permitted to process a given ring entry.
+ * RMC transmit ring meanings are reversed.
+ */
+#define FZA_RING_OWN_MASK 0x80000000
+#define FZA_RING_OWN_FZA 0x00000000 /* permit FZA, forbid host */
+#define FZA_RING_OWN_HOST 0x80000000 /* permit host, forbid FZA */
+#define FZA_RING_TX_OWN_RMC 0x80000000 /* permit RMC, forbid host */
+#define FZA_RING_TX_OWN_HOST 0x00000000 /* permit host, forbid RMC */
+
+/* RMC constants. */
+#define FZA_RING_PBC_MASK 0x00001fff /* frame length */
+
+/* Layout of counter buffers. */
+
+struct fza_counter {
+ u32 msw;
+ u32 lsw;
+};
+
+struct fza_counters {
+ struct fza_counter sys_buf; /* system buffer unavailable */
+ struct fza_counter tx_under; /* transmit underruns */
+ struct fza_counter tx_fail; /* transmit failures */
+ struct fza_counter rx_over; /* receive data overruns */
+ struct fza_counter frame_cnt; /* frame count */
+ struct fza_counter error_cnt; /* error count */
+ struct fza_counter lost_cnt; /* lost count */
+ struct fza_counter rinit_in; /* ring initialization initiated */
+ struct fza_counter rinit_rx; /* ring initialization received */
+ struct fza_counter beac_in; /* ring beacon initiated */
+ struct fza_counter dup_addr; /* duplicate address test failures */
+ struct fza_counter dup_tok; /* duplicate token detected */
+ struct fza_counter purg_err; /* ring purge errors */
+ struct fza_counter strip_err; /* bridge strip errors */
+ struct fza_counter pct_in; /* traces initiated */
+ struct fza_counter pct_rx; /* traces received */
+ struct fza_counter lem_rej; /* LEM rejects */
+ struct fza_counter tne_rej; /* TNE expiry rejects */
+ struct fza_counter lem_event; /* LEM events */
+ struct fza_counter lct_rej; /* LCT rejects */
+ struct fza_counter conn_cmpl; /* connections completed */
+ struct fza_counter el_buf; /* elasticity buffer errors */
+};
+
+/* Layout of command buffers. */
+
+/* INIT command buffer.
+ *
+ * Values of default link parameters given are as obtained from a
+ * DEFZA-AA rev. C03 board. The board counts time in units of 80ns.
+ */
+struct fza_cmd_init {
+ u32 tx_mode; /* transmit mode */
+ u32 hst_rx_size; /* host receive ring entries */
+
+ struct fza_counters counters; /* counters */
+
+ u8 rmc_rev[4]; /* RMC revision */
+ u8 rom_rev[4]; /* ROM revision */
+ u8 fw_rev[4]; /* firmware revision */
+
+ u32 mop_type; /* MOP device type */
+
+ u32 hst_rx; /* base of host rx descriptor ring */
+ u32 rmc_tx; /* base of RMC tx descriptor ring */
+ u32 rmc_tx_size; /* size of RMC tx descriptor ring */
+ u32 smt_tx; /* base of SMT tx descriptor ring */
+ u32 smt_tx_size; /* size of SMT tx descriptor ring */
+ u32 smt_rx; /* base of SMT rx descriptor ring */
+ u32 smt_rx_size; /* size of SMT rx descriptor ring */
+
+ u32 hw_addr[2]; /* link address */
+
+ u32 def_t_req; /* default Requested TTRT (T_REQ) --
+ * C03: 100000 [80ns]
+ */
+ u32 def_tvx; /* default Valid Transmission Time
+ * (TVX) -- C03: 32768 [80ns]
+ */
+ u32 def_t_max; /* default Maximum TTRT (T_MAX) --
+ * C03: 2162688 [80ns]
+ */
+ u32 lem_threshold; /* default LEM threshold -- C03: 8 */
+ u32 def_station_id[2]; /* default station ID */
+
+ u32 pmd_type_alt; /* alternative PMD type code */
+
+ u32 smt_ver; /* SMT version */
+
+ u32 rtoken_timeout; /* default restricted token timeout
+ * -- C03: 12500000 [80ns]
+ */
+ u32 ring_purger; /* default ring purger enable --
+ * C03: 1
+ */
+
+ u32 smt_ver_max; /* max SMT version ID */
+ u32 smt_ver_min; /* min SMT version ID */
+ u32 pmd_type; /* PMD type code */
+};
+
+/* INIT command PMD type codes. */
+#define FZA_PMD_TYPE_MMF 0 /* Multimode fiber */
+#define FZA_PMD_TYPE_TW 101 /* ThinWire */
+#define FZA_PMD_TYPE_STP 102 /* STP */
+
+/* MODCAM/RDCAM command buffer. */
+#define FZA_CMD_CAM_SIZE 64 /* CAM address entry count */
+struct fza_cmd_cam {
+ u32 hw_addr[FZA_CMD_CAM_SIZE][2]; /* CAM address entries */
+};
+
+/* PARAM command buffer.
+ *
+ * Permitted ranges given are as defined by the spec and obtained from a
+ * DEFZA-AA rev. C03 board, respectively. The rtoken_timeout field is
+ * erroneously interpreted in units of ms.
+ */
+struct fza_cmd_param {
+ u32 loop_mode; /* loopback mode */
+ u32 t_max; /* Maximum TTRT (T_MAX)
+ * def: ??? [80ns]
+ * C03: [t_req+1,4294967295] [80ns]
+ */
+ u32 t_req; /* Requested TTRT (T_REQ)
+ * def: [50000,2097151] [80ns]
+ * C03: [50001,t_max-1] [80ns]
+ */
+ u32 tvx; /* Valid Transmission Time (TVX)
+ * def: [29375,65280] [80ns]
+ * C03: [29376,65279] [80ns]
+ */
+ u32 lem_threshold; /* LEM threshold */
+ u32 station_id[2]; /* station ID */
+ u32 rtoken_timeout; /* restricted token timeout
+ * def: [0,125000000] [80ns]
+ * C03: [0,9999] [ms]
+ */
+ u32 ring_purger; /* ring purger enable: 0|1 */
+};
+
+/* Loopback modes for the PARAM command. */
+#define FZA_LOOP_NORMAL 0
+#define FZA_LOOP_INTERN 1
+#define FZA_LOOP_EXTERN 2
+
+/* MODPROM command buffer. */
+struct fza_cmd_modprom {
+ u32 llc_prom; /* LLC promiscuous enable */
+ u32 smt_prom; /* SMT promiscuous enable */
+ u32 llc_multi; /* LLC multicast promiscuous enable */
+ u32 llc_bcast; /* LLC broadcast promiscuous enable */
+};
+
+/* SETCHAR command buffer.
+ *
+ * Permitted ranges are as for the PARAM command.
+ */
+struct fza_cmd_setchar {
+ u32 t_max; /* Maximum TTRT (T_MAX) */
+ u32 t_req; /* Requested TTRT (T_REQ) */
+ u32 tvx; /* Valid Transmission Time (TVX) */
+ u32 lem_threshold; /* LEM threshold */
+ u32 rtoken_timeout; /* restricted token timeout */
+ u32 ring_purger; /* ring purger enable */
+};
+
+/* RDCNTR command buffer. */
+struct fza_cmd_rdcntr {
+ struct fza_counters counters; /* counters */
+};
+
+/* STATUS command buffer. */
+struct fza_cmd_status {
+ u32 led_state; /* LED state */
+ u32 rmt_state; /* ring management state */
+ u32 link_state; /* link state */
+ u32 dup_addr; /* duplicate address flag */
+ u32 ring_purger; /* ring purger state */
+ u32 t_neg; /* negotiated TTRT [80ns] */
+ u32 una[2]; /* upstream neighbour address */
+ u32 una_timeout; /* UNA timed out */
+ u32 strip_mode; /* frame strip mode */
+ u32 yield_mode; /* claim token yield mode */
+ u32 phy_state; /* PHY state */
+ u32 neigh_phy; /* neighbour PHY type */
+ u32 reject; /* reject reason */
+ u32 phy_lee; /* PHY link error estimate [-log10] */
+ u32 una_old[2]; /* old upstream neighbour address */
+ u32 rmt_mac; /* remote MAC indicated */
+ u32 ring_err; /* ring error reason */
+ u32 beac_rx[2]; /* sender of last directed beacon */
+ u32 un_dup_addr; /* upstream neighbr dup address flag */
+ u32 dna[2]; /* downstream neighbour address */
+ u32 dna_old[2]; /* old downstream neighbour address */
+};
+
+/* Common command buffer. */
+union fza_cmd_buf {
+ struct fza_cmd_init init;
+ struct fza_cmd_cam cam;
+ struct fza_cmd_param param;
+ struct fza_cmd_modprom modprom;
+ struct fza_cmd_setchar setchar;
+ struct fza_cmd_rdcntr rdcntr;
+ struct fza_cmd_status status;
+};
+
+/* MAC (Media Access Controller) chip packet request header constants. */
+
+/* Packet request header byte #0. */
+#define FZA_PRH0_FMT_TYPE_MASK 0xc0 /* type of packet, always zero */
+#define FZA_PRH0_TOK_TYPE_MASK 0x30 /* type of token required
+ * to send this frame
+ */
+#define FZA_PRH0_TKN_TYPE_ANY 0x30 /* use either token type */
+#define FZA_PRH0_TKN_TYPE_UNR 0x20 /* use an unrestricted token */
+#define FZA_PRH0_TKN_TYPE_RST 0x10 /* use a restricted token */
+#define FZA_PRH0_TKN_TYPE_IMM 0x00 /* send immediately, no token required
+ */
+#define FZA_PRH0_FRAME_MASK 0x08 /* type of frame to send */
+#define FZA_PRH0_FRAME_SYNC 0x08 /* send a synchronous frame */
+#define FZA_PRH0_FRAME_ASYNC 0x00 /* send an asynchronous frame */
+#define FZA_PRH0_MODE_MASK 0x04 /* send mode */
+#define FZA_PRH0_MODE_IMMED 0x04 /* an immediate mode, send regardless
+ * of the ring operational state
+ */
+#define FZA_PRH0_MODE_NORMAL 0x00 /* a normal mode, send only if ring
+ * operational
+ */
+#define FZA_PRH0_SF_MASK 0x02 /* send frame first */
+#define FZA_PRH0_SF_FIRST 0x02 /* send this frame first
+ * with this token capture
+ */
+#define FZA_PRH0_SF_NORMAL 0x00 /* treat this frame normally */
+#define FZA_PRH0_BCN_MASK 0x01 /* beacon frame */
+#define FZA_PRH0_BCN_BEACON 0x01 /* send the frame only
+ * if in the beacon state
+ */
+#define FZA_PRH0_BCN_DATA 0x01 /* send the frame only
+ * if in the data state
+ */
+/* Packet request header byte #1. */
+ /* bit 7 always zero */
+#define FZA_PRH1_SL_MASK 0x40 /* send frame last */
+#define FZA_PRH1_SL_LAST 0x40 /* send this frame last, releasing
+ * the token afterwards
+ */
+#define FZA_PRH1_SL_NORMAL 0x00 /* treat this frame normally */
+#define FZA_PRH1_CRC_MASK 0x20 /* CRC append */
+#define FZA_PRH1_CRC_NORMAL 0x20 /* calculate the CRC and append it
+ * as the FCS field to the frame
+ */
+#define FZA_PRH1_CRC_SKIP 0x00 /* leave the frame as is */
+#define FZA_PRH1_TKN_SEND_MASK 0x18 /* type of token to send after the
+ * frame if this is the last frame
+ */
+#define FZA_PRH1_TKN_SEND_ORIG 0x18 /* send a token of the same type as the
+ * originally captured one
+ */
+#define FZA_PRH1_TKN_SEND_RST 0x10 /* send a restricted token */
+#define FZA_PRH1_TKN_SEND_UNR 0x08 /* send an unrestricted token */
+#define FZA_PRH1_TKN_SEND_NONE 0x00 /* send no token */
+#define FZA_PRH1_EXTRA_FS_MASK 0x07 /* send extra frame status indicators
+ */
+#define FZA_PRH1_EXTRA_FS_ST 0x07 /* TR RR ST II */
+#define FZA_PRH1_EXTRA_FS_SS 0x06 /* TR RR SS II */
+#define FZA_PRH1_EXTRA_FS_SR 0x05 /* TR RR SR II */
+#define FZA_PRH1_EXTRA_FS_NONE1 0x04 /* TR RR II II */
+#define FZA_PRH1_EXTRA_FS_RT 0x03 /* TR RR RT II */
+#define FZA_PRH1_EXTRA_FS_RS 0x02 /* TR RR RS II */
+#define FZA_PRH1_EXTRA_FS_RR 0x01 /* TR RR RR II */
+#define FZA_PRH1_EXTRA_FS_NONE 0x00 /* TR RR II II */
+/* Packet request header byte #2. */
+#define FZA_PRH2_NORMAL 0x00 /* always zero */
+
+/* PRH used for LLC frames. */
+#define FZA_PRH0_LLC (FZA_PRH0_TKN_TYPE_UNR)
+#define FZA_PRH1_LLC (FZA_PRH1_CRC_NORMAL | FZA_PRH1_TKN_SEND_UNR)
+#define FZA_PRH2_LLC (FZA_PRH2_NORMAL)
+
+/* PRH used for SMT frames. */
+#define FZA_PRH0_SMT (FZA_PRH0_TKN_TYPE_UNR)
+#define FZA_PRH1_SMT (FZA_PRH1_CRC_NORMAL | FZA_PRH1_TKN_SEND_UNR)
+#define FZA_PRH2_SMT (FZA_PRH2_NORMAL)
+
+#if ((FZA_RING_RX_SIZE) < 2) || ((FZA_RING_RX_SIZE) > 256)
+# error FZA_RING_RX_SIZE has to be from 2 up to 256
+#endif
+#if ((FZA_RING_TX_MODE) != 0) && ((FZA_RING_TX_MODE) != 1)
+# error FZA_RING_TX_MODE has to be either 0 or 1
+#endif
+
+#define FZA_RING_TX_SIZE (512 << (FZA_RING_TX_MODE))
+
+struct fza_private {
+ struct device *bdev; /* pointer to the bus device */
+ const char *name; /* printable device name */
+ void __iomem *mmio; /* MMIO ioremap cookie */
+ struct fza_regs __iomem *regs; /* pointer to FZA registers */
+
+ struct sk_buff *rx_skbuff[FZA_RING_RX_SIZE];
+ /* all skbs assigned to the host
+ * receive descriptors
+ */
+ dma_addr_t rx_dma[FZA_RING_RX_SIZE];
+ /* their corresponding DMA addresses */
+
+ struct fza_ring_cmd __iomem *ring_cmd;
+ /* pointer to the command descriptor
+ * ring
+ */
+ int ring_cmd_index; /* index to the command descriptor ring
+ * for the next command
+ */
+ struct fza_ring_uns __iomem *ring_uns;
+ /* pointer to the unsolicited
+ * descriptor ring
+ */
+ int ring_uns_index; /* index to the unsolicited descriptor
+ * ring for the next event
+ */
+
+ struct fza_ring_rmc_tx __iomem *ring_rmc_tx;
+ /* pointer to the RMC transmit
+ * descriptor ring (obtained from the
+ * INIT command)
+ */
+ int ring_rmc_tx_size; /* number of entries in the RMC
+ * transmit descriptor ring (obtained
+ * from the INIT command)
+ */
+ int ring_rmc_tx_index; /* index to the RMC transmit descriptor
+ * ring for the next transmission
+ */
+ int ring_rmc_txd_index; /* index to the RMC transmit descriptor
+ * ring for the next transmit done
+ * acknowledge
+ */
+
+ struct fza_ring_hst_rx __iomem *ring_hst_rx;
+ /* pointer to the host receive
+ * descriptor ring (obtained from the
+ * INIT command)
+ */
+ int ring_hst_rx_size; /* number of entries in the host
+ * receive descriptor ring (set by the
+ * INIT command)
+ */
+ int ring_hst_rx_index; /* index to the host receive descriptor
+ * ring for the next transmission
+ */
+
+ struct fza_ring_smt __iomem *ring_smt_tx;
+ /* pointer to the SMT transmit
+ * descriptor ring (obtained from the
+ * INIT command)
+ */
+ int ring_smt_tx_size; /* number of entries in the SMT
+ * transmit descriptor ring (obtained
+ * from the INIT command)
+ */
+ int ring_smt_tx_index; /* index to the SMT transmit descriptor
+ * ring for the next transmission
+ */
+
+ struct fza_ring_smt __iomem *ring_smt_rx;
+ /* pointer to the SMT transmit
+ * descriptor ring (obtained from the
+ * INIT command)
+ */
+ int ring_smt_rx_size; /* number of entries in the SMT
+ * receive descriptor ring (obtained
+ * from the INIT command)
+ */
+ int ring_smt_rx_index; /* index to the SMT receive descriptor
+ * ring for the next transmission
+ */
+
+ struct fza_buffer_tx __iomem *buffer_tx;
+ /* pointer to the RMC transmit buffers
+ */
+
+ uint state; /* adapter expected state */
+
+ spinlock_t lock; /* for device & private data access */
+ uint int_mask; /* interrupt source selector */
+
+ int cmd_done_flag; /* command completion trigger */
+ wait_queue_head_t cmd_done_wait;
+
+ int state_chg_flag; /* state change trigger */
+ wait_queue_head_t state_chg_wait;
+
+ struct timer_list reset_timer; /* RESET time-out trigger */
+ int timer_state; /* RESET trigger state */
+
+ int queue_active; /* whether to enable queueing */
+
+ struct net_device_stats stats;
+
+ uint irq_count_flush_tx; /* transmit flush irqs */
+ uint irq_count_uns_poll; /* unsolicited event irqs */
+ uint irq_count_smt_tx_poll; /* SMT transmit irqs */
+ uint irq_count_rx_poll; /* host receive irqs */
+ uint irq_count_tx_done; /* transmit done irqs */
+ uint irq_count_cmd_done; /* command done irqs */
+ uint irq_count_state_chg; /* state change irqs */
+ uint irq_count_link_st_chg; /* link status change irqs */
+
+ uint t_max; /* T_MAX */
+ uint t_req; /* T_REQ */
+ uint tvx; /* TVX */
+ uint lem_threshold; /* LEM threshold */
+ uint station_id[2]; /* station ID */
+ uint rtoken_timeout; /* restricted token timeout */
+ uint ring_purger; /* ring purger enable flag */
+};
+
+struct fza_fddihdr {
+ u8 pa[2]; /* preamble */
+ u8 sd; /* starting delimiter */
+ struct fddihdr hdr;
+} __packed;