forked from luck/tmp_suning_uos_patched
83292e0a9c
Property values cannot be referenced outside of mdesc_grab()/mdesc_release() pairs. The only major offender was the VIO bus layer, easily fixed. Add some commentary to mdesc.h describing these rules. Signed-off-by: David S. Miller <davem@davemloft.net>
405 lines
9.0 KiB
C
405 lines
9.0 KiB
C
#ifndef _SPARC64_VIO_H
|
|
#define _SPARC64_VIO_H
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/device.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/list.h>
|
|
|
|
#include <asm/ldc.h>
|
|
#include <asm/mdesc.h>
|
|
|
|
struct vio_msg_tag {
|
|
u8 type;
|
|
#define VIO_TYPE_CTRL 0x01
|
|
#define VIO_TYPE_DATA 0x02
|
|
#define VIO_TYPE_ERR 0x04
|
|
|
|
u8 stype;
|
|
#define VIO_SUBTYPE_INFO 0x01
|
|
#define VIO_SUBTYPE_ACK 0x02
|
|
#define VIO_SUBTYPE_NACK 0x04
|
|
|
|
u16 stype_env;
|
|
#define VIO_VER_INFO 0x0001
|
|
#define VIO_ATTR_INFO 0x0002
|
|
#define VIO_DRING_REG 0x0003
|
|
#define VIO_DRING_UNREG 0x0004
|
|
#define VIO_RDX 0x0005
|
|
#define VIO_PKT_DATA 0x0040
|
|
#define VIO_DESC_DATA 0x0041
|
|
#define VIO_DRING_DATA 0x0042
|
|
#define VNET_MCAST_INFO 0x0101
|
|
|
|
u32 sid;
|
|
};
|
|
|
|
struct vio_rdx {
|
|
struct vio_msg_tag tag;
|
|
u64 resv[6];
|
|
};
|
|
|
|
struct vio_ver_info {
|
|
struct vio_msg_tag tag;
|
|
u16 major;
|
|
u16 minor;
|
|
u8 dev_class;
|
|
#define VDEV_NETWORK 0x01
|
|
#define VDEV_NETWORK_SWITCH 0x02
|
|
#define VDEV_DISK 0x03
|
|
#define VDEV_DISK_SERVER 0x04
|
|
|
|
u8 resv1[3];
|
|
u64 resv2[5];
|
|
};
|
|
|
|
struct vio_dring_register {
|
|
struct vio_msg_tag tag;
|
|
u64 dring_ident;
|
|
u32 num_descr;
|
|
u32 descr_size;
|
|
u16 options;
|
|
#define VIO_TX_DRING 0x0001
|
|
#define VIO_RX_DRING 0x0002
|
|
u16 resv;
|
|
u32 num_cookies;
|
|
struct ldc_trans_cookie cookies[0];
|
|
};
|
|
|
|
struct vio_dring_unregister {
|
|
struct vio_msg_tag tag;
|
|
u64 dring_ident;
|
|
u64 resv[5];
|
|
};
|
|
|
|
/* Data transfer modes */
|
|
#define VIO_PKT_MODE 0x01 /* Packet based transfer */
|
|
#define VIO_DESC_MODE 0x02 /* In-band descriptors */
|
|
#define VIO_DRING_MODE 0x03 /* Descriptor rings */
|
|
|
|
struct vio_dring_data {
|
|
struct vio_msg_tag tag;
|
|
u64 seq;
|
|
u64 dring_ident;
|
|
u32 start_idx;
|
|
u32 end_idx;
|
|
u8 state;
|
|
#define VIO_DRING_ACTIVE 0x01
|
|
#define VIO_DRING_STOPPED 0x02
|
|
|
|
u8 __pad1;
|
|
u16 __pad2;
|
|
u32 __pad3;
|
|
u64 __par4[2];
|
|
};
|
|
|
|
struct vio_dring_hdr {
|
|
u8 state;
|
|
#define VIO_DESC_FREE 0x01
|
|
#define VIO_DESC_READY 0x02
|
|
#define VIO_DESC_ACCEPTED 0x03
|
|
#define VIO_DESC_DONE 0x04
|
|
u8 ack;
|
|
#define VIO_ACK_ENABLE 0x01
|
|
#define VIO_ACK_DISABLE 0x00
|
|
|
|
u16 __pad1;
|
|
u32 __pad2;
|
|
};
|
|
|
|
/* VIO disk specific structures and defines */
|
|
struct vio_disk_attr_info {
|
|
struct vio_msg_tag tag;
|
|
u8 xfer_mode;
|
|
u8 vdisk_type;
|
|
#define VD_DISK_TYPE_SLICE 0x01 /* Slice in block device */
|
|
#define VD_DISK_TYPE_DISK 0x02 /* Entire block device */
|
|
u16 resv1;
|
|
u32 vdisk_block_size;
|
|
u64 operations;
|
|
u64 vdisk_size;
|
|
u64 max_xfer_size;
|
|
u64 resv2[2];
|
|
};
|
|
|
|
struct vio_disk_desc {
|
|
struct vio_dring_hdr hdr;
|
|
u64 req_id;
|
|
u8 operation;
|
|
#define VD_OP_BREAD 0x01 /* Block read */
|
|
#define VD_OP_BWRITE 0x02 /* Block write */
|
|
#define VD_OP_FLUSH 0x03 /* Flush disk contents */
|
|
#define VD_OP_GET_WCE 0x04 /* Get write-cache status */
|
|
#define VD_OP_SET_WCE 0x05 /* Enable/disable write-cache */
|
|
#define VD_OP_GET_VTOC 0x06 /* Get VTOC */
|
|
#define VD_OP_SET_VTOC 0x07 /* Set VTOC */
|
|
#define VD_OP_GET_DISKGEOM 0x08 /* Get disk geometry */
|
|
#define VD_OP_SET_DISKGEOM 0x09 /* Set disk geometry */
|
|
#define VD_OP_SCSICMD 0x0a /* SCSI control command */
|
|
#define VD_OP_GET_DEVID 0x0b /* Get device ID */
|
|
#define VD_OP_GET_EFI 0x0c /* Get EFI */
|
|
#define VD_OP_SET_EFI 0x0d /* Set EFI */
|
|
u8 slice;
|
|
u16 resv1;
|
|
u32 status;
|
|
u64 offset;
|
|
u64 size;
|
|
u32 ncookies;
|
|
u32 resv2;
|
|
struct ldc_trans_cookie cookies[0];
|
|
};
|
|
|
|
#define VIO_DISK_VNAME_LEN 8
|
|
#define VIO_DISK_ALABEL_LEN 128
|
|
#define VIO_DISK_NUM_PART 8
|
|
|
|
struct vio_disk_vtoc {
|
|
u8 volume_name[VIO_DISK_VNAME_LEN];
|
|
u16 sector_size;
|
|
u16 num_partitions;
|
|
u8 ascii_label[VIO_DISK_ALABEL_LEN];
|
|
struct {
|
|
u16 id;
|
|
u16 perm_flags;
|
|
u32 resv;
|
|
u64 start_block;
|
|
u64 num_blocks;
|
|
} partitions[VIO_DISK_NUM_PART];
|
|
};
|
|
|
|
struct vio_disk_geom {
|
|
u16 num_cyl; /* Num data cylinders */
|
|
u16 alt_cyl; /* Num alternate cylinders */
|
|
u16 beg_cyl; /* Cyl off of fixed head area */
|
|
u16 num_hd; /* Num heads */
|
|
u16 num_sec; /* Num sectors */
|
|
u16 ifact; /* Interleave factor */
|
|
u16 apc; /* Alts per cylinder (SCSI) */
|
|
u16 rpm; /* Revolutions per minute */
|
|
u16 phy_cyl; /* Num physical cylinders */
|
|
u16 wr_skip; /* Num sects to skip, writes */
|
|
u16 rd_skip; /* Num sects to skip, writes */
|
|
};
|
|
|
|
struct vio_disk_devid {
|
|
u16 resv;
|
|
u16 type;
|
|
u32 len;
|
|
char id[0];
|
|
};
|
|
|
|
struct vio_disk_efi {
|
|
u64 lba;
|
|
u64 len;
|
|
char data[0];
|
|
};
|
|
|
|
/* VIO net specific structures and defines */
|
|
struct vio_net_attr_info {
|
|
struct vio_msg_tag tag;
|
|
u8 xfer_mode;
|
|
u8 addr_type;
|
|
#define VNET_ADDR_ETHERMAC 0x01
|
|
u16 ack_freq;
|
|
u32 resv1;
|
|
u64 addr;
|
|
u64 mtu;
|
|
u64 resv2[3];
|
|
};
|
|
|
|
#define VNET_NUM_MCAST 7
|
|
|
|
struct vio_net_mcast_info {
|
|
struct vio_msg_tag tag;
|
|
u8 set;
|
|
u8 count;
|
|
u8 mcast_addr[VNET_NUM_MCAST * 6];
|
|
u32 resv;
|
|
};
|
|
|
|
struct vio_net_desc {
|
|
struct vio_dring_hdr hdr;
|
|
u32 size;
|
|
u32 ncookies;
|
|
struct ldc_trans_cookie cookies[0];
|
|
};
|
|
|
|
#define VIO_MAX_RING_COOKIES 24
|
|
|
|
struct vio_dring_state {
|
|
u64 ident;
|
|
void *base;
|
|
u64 snd_nxt;
|
|
u64 rcv_nxt;
|
|
u32 entry_size;
|
|
u32 num_entries;
|
|
u32 prod;
|
|
u32 cons;
|
|
u32 pending;
|
|
int ncookies;
|
|
struct ldc_trans_cookie cookies[VIO_MAX_RING_COOKIES];
|
|
};
|
|
|
|
static inline void *vio_dring_cur(struct vio_dring_state *dr)
|
|
{
|
|
return dr->base + (dr->entry_size * dr->prod);
|
|
}
|
|
|
|
static inline void *vio_dring_entry(struct vio_dring_state *dr,
|
|
unsigned int index)
|
|
{
|
|
return dr->base + (dr->entry_size * index);
|
|
}
|
|
|
|
static inline u32 vio_dring_avail(struct vio_dring_state *dr,
|
|
unsigned int ring_size)
|
|
{
|
|
/* Ensure build-time power-of-2. */
|
|
BUILD_BUG_ON(ring_size & (ring_size - 1));
|
|
|
|
return (dr->pending -
|
|
((dr->prod - dr->cons) & (ring_size - 1)));
|
|
}
|
|
|
|
#define VIO_MAX_TYPE_LEN 64
|
|
#define VIO_MAX_COMPAT_LEN 64
|
|
|
|
struct vio_dev {
|
|
u64 mp;
|
|
struct device_node *dp;
|
|
|
|
char type[VIO_MAX_TYPE_LEN];
|
|
char compat[VIO_MAX_COMPAT_LEN];
|
|
int compat_len;
|
|
|
|
unsigned long channel_id;
|
|
|
|
unsigned int tx_irq;
|
|
unsigned int rx_irq;
|
|
|
|
struct device dev;
|
|
};
|
|
|
|
struct vio_driver {
|
|
struct list_head node;
|
|
const struct vio_device_id *id_table;
|
|
int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
|
|
int (*remove)(struct vio_dev *dev);
|
|
void (*shutdown)(struct vio_dev *dev);
|
|
unsigned long driver_data;
|
|
struct device_driver driver;
|
|
};
|
|
|
|
struct vio_version {
|
|
u16 major;
|
|
u16 minor;
|
|
};
|
|
|
|
struct vio_driver_state;
|
|
struct vio_driver_ops {
|
|
int (*send_attr)(struct vio_driver_state *vio);
|
|
int (*handle_attr)(struct vio_driver_state *vio, void *pkt);
|
|
void (*handshake_complete)(struct vio_driver_state *vio);
|
|
};
|
|
|
|
struct vio_completion {
|
|
struct completion com;
|
|
int err;
|
|
int waiting_for;
|
|
};
|
|
|
|
struct vio_driver_state {
|
|
/* Protects VIO handshake and, optionally, driver private state. */
|
|
spinlock_t lock;
|
|
|
|
struct ldc_channel *lp;
|
|
|
|
u32 _peer_sid;
|
|
u32 _local_sid;
|
|
struct vio_dring_state drings[2];
|
|
#define VIO_DRIVER_TX_RING 0
|
|
#define VIO_DRIVER_RX_RING 1
|
|
|
|
u8 hs_state;
|
|
#define VIO_HS_INVALID 0x00
|
|
#define VIO_HS_GOTVERS 0x01
|
|
#define VIO_HS_GOT_ATTR 0x04
|
|
#define VIO_HS_SENT_DREG 0x08
|
|
#define VIO_HS_SENT_RDX 0x10
|
|
#define VIO_HS_GOT_RDX_ACK 0x20
|
|
#define VIO_HS_GOT_RDX 0x40
|
|
#define VIO_HS_SENT_RDX_ACK 0x80
|
|
#define VIO_HS_COMPLETE (VIO_HS_GOT_RDX_ACK | VIO_HS_SENT_RDX_ACK)
|
|
|
|
u8 dev_class;
|
|
|
|
u8 dr_state;
|
|
#define VIO_DR_STATE_TXREG 0x01
|
|
#define VIO_DR_STATE_RXREG 0x02
|
|
#define VIO_DR_STATE_TXREQ 0x10
|
|
#define VIO_DR_STATE_RXREQ 0x20
|
|
|
|
u8 debug;
|
|
#define VIO_DEBUG_HS 0x01
|
|
#define VIO_DEBUG_DATA 0x02
|
|
|
|
void *desc_buf;
|
|
unsigned int desc_buf_len;
|
|
|
|
struct vio_completion *cmp;
|
|
|
|
struct vio_dev *vdev;
|
|
|
|
struct timer_list timer;
|
|
|
|
struct vio_version ver;
|
|
|
|
struct vio_version *ver_table;
|
|
int ver_table_entries;
|
|
|
|
char *name;
|
|
|
|
struct vio_driver_ops *ops;
|
|
};
|
|
|
|
#define viodbg(TYPE, f, a...) \
|
|
do { if (vio->debug & VIO_DEBUG_##TYPE) \
|
|
printk(KERN_INFO "vio: ID[%lu] " f, \
|
|
vio->vdev->channel_id, ## a); \
|
|
} while (0)
|
|
|
|
extern int vio_register_driver(struct vio_driver *drv);
|
|
extern void vio_unregister_driver(struct vio_driver *drv);
|
|
|
|
static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
|
|
{
|
|
return container_of(drv, struct vio_driver, driver);
|
|
}
|
|
|
|
static inline struct vio_dev *to_vio_dev(struct device *dev)
|
|
{
|
|
return container_of(dev, struct vio_dev, dev);
|
|
}
|
|
|
|
extern int vio_ldc_send(struct vio_driver_state *vio, void *data, int len);
|
|
extern void vio_link_state_change(struct vio_driver_state *vio, int event);
|
|
extern void vio_conn_reset(struct vio_driver_state *vio);
|
|
extern int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt);
|
|
extern int vio_validate_sid(struct vio_driver_state *vio,
|
|
struct vio_msg_tag *tp);
|
|
extern u32 vio_send_sid(struct vio_driver_state *vio);
|
|
extern int vio_ldc_alloc(struct vio_driver_state *vio,
|
|
struct ldc_channel_config *base_cfg, void *event_arg);
|
|
extern void vio_ldc_free(struct vio_driver_state *vio);
|
|
extern int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
|
|
u8 dev_class, struct vio_version *ver_table,
|
|
int ver_table_size, struct vio_driver_ops *ops,
|
|
char *name);
|
|
|
|
extern void vio_port_up(struct vio_driver_state *vio);
|
|
|
|
#endif /* _SPARC64_VIO_H */
|