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/*
* 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) 2005 Silicon Graphics, Inc. All Rights Reserved.
*/
#ifndef _LINUX_IOC4_H
#define _LINUX_IOC4_H
#include <linux/interrupt.h>
/***************
* Definitions *
***************/
/* Miscellaneous values inherent to hardware */
#define IOC4_EXTINT_COUNT_DIVISOR 520 /* PCI clocks per COUNT tick */
/***********************************
* Structures needed by subdrivers *
***********************************/
/* This structure fully describes the IOC4 miscellaneous registers which
* appear at bar[0]+0x00000 through bar[0]+0x0005c. The corresponding
* PCI resource is managed by the main IOC4 driver because it contains
* registers of interest to many different IOC4 subdrivers.
*/
struct ioc4_misc_regs {
/* Miscellaneous IOC4 registers */
union ioc4_pci_err_addr_l {
uint32_t raw;
struct {
uint32_t valid:1; /* Address captured */
uint32_t master_id:4; /* Unit causing error
* 0/1: Serial port 0 TX/RX
* 2/3: Serial port 1 TX/RX
* 4/5: Serial port 2 TX/RX
* 6/7: Serial port 3 TX/RX
* 8: ATA/ATAPI
* 9-15: Undefined
*/
uint32_t mul_err:1; /* Multiple errors occurred */
uint32_t addr:26; /* Bits 31-6 of error addr */
} fields;
} pci_err_addr_l;
uint32_t pci_err_addr_h; /* Bits 63-32 of error addr */
union ioc4_sio_int {
uint32_t raw;
struct {
uint8_t tx_mt:1; /* TX ring buffer empty */
uint8_t rx_full:1; /* RX ring buffer full */
uint8_t rx_high:1; /* RX high-water exceeded */
uint8_t rx_timer:1; /* RX timer has triggered */
uint8_t delta_dcd:1; /* DELTA_DCD seen */
uint8_t delta_cts:1; /* DELTA_CTS seen */
uint8_t intr_pass:1; /* Interrupt pass-through */
uint8_t tx_explicit:1; /* TX, MCW, or delay complete */
} fields[4];
} sio_ir; /* Serial interrupt state */
union ioc4_other_int {
uint32_t raw;
struct {
uint32_t ata_int:1; /* ATA port passthru */
uint32_t ata_memerr:1; /* ATA halted by mem error */
uint32_t memerr:4; /* Serial halted by mem err */
uint32_t kbd_int:1; /* kbd/mouse intr asserted */
uint32_t reserved:16; /* zero */
uint32_t rt_int:1; /* INT_OUT section latch */
uint32_t gen_int:8; /* Intr. from generic pins */
} fields;
} other_ir; /* Other interrupt state */
union ioc4_sio_int sio_ies; /* Serial interrupt enable set */
union ioc4_other_int other_ies; /* Other interrupt enable set */
union ioc4_sio_int sio_iec; /* Serial interrupt enable clear */
union ioc4_other_int other_iec; /* Other interrupt enable clear */
union ioc4_sio_cr {
uint32_t raw;
struct {
uint32_t cmd_pulse:4; /* Bytebus strobe width */
uint32_t arb_diag:3; /* PCI bus requester */
uint32_t sio_diag_idle:1; /* Active ser req? */
uint32_t ata_diag_idle:1; /* Active ATA req? */
uint32_t ata_diag_active:1; /* ATA req is winner */
uint32_t reserved:22; /* zero */
} fields;
} sio_cr;
uint32_t unused1;
union ioc4_int_out {
uint32_t raw;
struct {
uint32_t count:16; /* Period control */
uint32_t mode:3; /* Output signal shape */
uint32_t reserved:11; /* zero */
uint32_t diag:1; /* Timebase control */
uint32_t int_out:1; /* Current value */
} fields;
} int_out; /* External interrupt output control */
uint32_t unused2;
union ioc4_gpcr {
uint32_t raw;
struct {
uint32_t dir:8; /* Pin direction */
uint32_t edge:8; /* Edge/level mode */
uint32_t reserved1:4; /* zero */
uint32_t int_out_en:1; /* INT_OUT enable */
uint32_t reserved2:11; /* zero */
} fields;
} gpcr_s; /* Generic PIO control set */
union ioc4_gpcr gpcr_c; /* Generic PIO control clear */
union ioc4_gpdr {
uint32_t raw;
struct {
uint32_t gen_pin:8; /* State of pins */
uint32_t reserved:24;
} fields;
} gpdr; /* Generic PIO data */
uint32_t unused3;
union ioc4_gppr {
uint32_t raw;
struct {
uint32_t gen_pin:1; /* Single pin state */
uint32_t reserved:31;
} fields;
} gppr[8]; /* Generic PIO pins */
};
/* Masks for GPCR DIR pins */
#define IOC4_GPCR_DIR_0 0x01 /* External interrupt output */
#define IOC4_GPCR_DIR_1 0x02 /* External interrupt input */
#define IOC4_GPCR_DIR_2 0x04
#define IOC4_GPCR_DIR_3 0x08 /* Keyboard/mouse presence */
#define IOC4_GPCR_DIR_4 0x10 /* Ser. port 0 xcvr select (0=232, 1=422) */
#define IOC4_GPCR_DIR_5 0x20 /* Ser. port 1 xcvr select (0=232, 1=422) */
#define IOC4_GPCR_DIR_6 0x40 /* Ser. port 2 xcvr select (0=232, 1=422) */
#define IOC4_GPCR_DIR_7 0x80 /* Ser. port 3 xcvr select (0=232, 1=422) */
/* Masks for GPCR EDGE pins */
#define IOC4_GPCR_EDGE_0 0x01
#define IOC4_GPCR_EDGE_1 0x02 /* External interrupt input */
#define IOC4_GPCR_EDGE_2 0x04
#define IOC4_GPCR_EDGE_3 0x08
#define IOC4_GPCR_EDGE_4 0x10
#define IOC4_GPCR_EDGE_5 0x20
#define IOC4_GPCR_EDGE_6 0x40
#define IOC4_GPCR_EDGE_7 0x80
/* One of these per IOC4 */
struct ioc4_driver_data {
struct list_head idd_list;
unsigned long idd_bar0;
struct pci_dev *idd_pdev;
const struct pci_device_id *idd_pci_id;
struct __iomem ioc4_misc_regs *idd_misc_regs;
unsigned long count_period;
void *idd_serial_data;
};
/* One per submodule */
struct ioc4_submodule {
struct list_head is_list;
char *is_name;
struct module *is_owner;
int (*is_probe) (struct ioc4_driver_data *);
int (*is_remove) (struct ioc4_driver_data *);
};
#define IOC4_NUM_CARDS 8 /* max cards per partition */
/**********************************
* Functions needed by submodules *
**********************************/
extern int ioc4_register_submodule(struct ioc4_submodule *);
extern void ioc4_unregister_submodule(struct ioc4_submodule *);
#endif /* _LINUX_IOC4_H */
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