| #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 <linux/log2.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 |
| #define VDEV_CONSOLE_CON 0x05 |
| |
| 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 |
| #define VIO_RX_DRING_DATA 0x0004 |
| 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 */ |
| /* in vers >= 1.2, VIO_DRING_MODE is 0x04 and transfer mode is a bitmask */ |
| #define VIO_NEW_DRING_MODE 0x04 |
| |
| 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 */ |
| u8 vdisk_mtype; /* v1.1 */ |
| #define VD_MEDIA_TYPE_FIXED 0x01 /* Fixed device */ |
| #define VD_MEDIA_TYPE_CD 0x02 /* CD Device */ |
| #define VD_MEDIA_TYPE_DVD 0x03 /* DVD Device */ |
| u8 resv1; |
| u32 vdisk_block_size; |
| u64 operations; |
| u64 vdisk_size; /* v1.1 */ |
| u64 max_xfer_size; |
| u32 phys_block_size; /* v1.2 */ |
| u32 resv2; |
| u64 resv3[1]; |
| }; |
| |
| 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; |
| u8 plnk_updt; |
| #define PHYSLINK_UPDATE_NONE 0x00 |
| #define PHYSLINK_UPDATE_STATE 0x01 |
| #define PHYSLINK_UPDATE_STATE_ACK 0x02 |
| #define PHYSLINK_UPDATE_STATE_NACK 0x03 |
| u8 options; |
| u16 resv1; |
| u64 addr; |
| u64 mtu; |
| u16 cflags; |
| #define VNET_LSO_IPV4_CAPAB 0x0001 |
| u16 ipv4_lso_maxlen; |
| u32 resv2; |
| u64 resv3[2]; |
| }; |
| |
| #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]; |
| }; |
| |
| struct vio_net_dext { |
| u8 flags; |
| #define VNET_PKT_HASH 0x01 |
| #define VNET_PKT_HCK_IPV4_HDRCKSUM 0x02 |
| #define VNET_PKT_HCK_FULLCKSUM 0x04 |
| #define VNET_PKT_IPV4_LSO 0x08 |
| #define VNET_PKT_HCK_IPV4_HDRCKSUM_OK 0x10 |
| #define VNET_PKT_HCK_FULLCKSUM_OK 0x20 |
| |
| u8 vnet_hashval; |
| u16 ipv4_lso_mss; |
| u32 resv3; |
| }; |
| |
| static inline struct vio_net_dext *vio_net_ext(struct vio_net_desc *desc) |
| { |
| return (struct vio_net_dext *)&desc->cookies[2]; |
| } |
| |
| #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]; |
| }; |
| |
| #define VIO_TAG_SIZE ((int)sizeof(struct vio_msg_tag)) |
| #define VIO_VCC_MTU_SIZE (LDC_PACKET_SIZE - VIO_TAG_SIZE) |
| |
| struct vio_vcc { |
| struct vio_msg_tag tag; |
| char data[VIO_VCC_MTU_SIZE]; |
| }; |
| |
| 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) |
| { |
| return (dr->pending - |
| ((dr->prod - dr->cons) & (ring_size - 1)) - 1); |
| } |
| |
| static inline u32 vio_dring_next(struct vio_dring_state *dr, u32 index) |
| { |
| if (++index == dr->num_entries) |
| index = 0; |
| return index; |
| } |
| |
| static inline u32 vio_dring_prev(struct vio_dring_state *dr, u32 index) |
| { |
| if (index == 0) |
| return dr->num_entries - 1; |
| else |
| return index - 1; |
| } |
| |
| #define VIO_MAX_TYPE_LEN 32 |
| #define VIO_MAX_NAME_LEN 32 |
| #define VIO_MAX_COMPAT_LEN 64 |
| |
| struct vio_dev { |
| u64 mp; |
| struct device_node *dp; |
| |
| char node_name[VIO_MAX_NAME_LEN]; |
| char type[VIO_MAX_TYPE_LEN]; |
| char compat[VIO_MAX_COMPAT_LEN]; |
| int compat_len; |
| |
| u64 dev_no; |
| |
| unsigned long port_id; |
| unsigned long channel_id; |
| |
| unsigned int tx_irq; |
| unsigned int rx_irq; |
| u64 rx_ino; |
| u64 tx_ino; |
| |
| /* Handle to the root of "channel-devices" sub-tree in MDESC */ |
| u64 cdev_handle; |
| |
| /* MD specific data used to identify the vdev in MD */ |
| union md_node_info md_node_info; |
| |
| struct device dev; |
| }; |
| |
| struct vio_driver { |
| const char *name; |
| 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; |
| bool no_irq; |
| }; |
| |
| 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; |
| }; |
| |
| static inline bool vio_version_before(struct vio_driver_state *vio, |
| u16 major, u16 minor) |
| { |
| u32 have = (u32)vio->ver.major << 16 | vio->ver.minor; |
| u32 want = (u32)major << 16 | minor; |
| |
| return have < want; |
| } |
| |
| static inline bool vio_version_after(struct vio_driver_state *vio, |
| u16 major, u16 minor) |
| { |
| u32 have = (u32)vio->ver.major << 16 | vio->ver.minor; |
| u32 want = (u32)major << 16 | minor; |
| |
| return have > want; |
| } |
| |
| static inline bool vio_version_after_eq(struct vio_driver_state *vio, |
| u16 major, u16 minor) |
| { |
| u32 have = (u32)vio->ver.major << 16 | vio->ver.minor; |
| u32 want = (u32)major << 16 | minor; |
| |
| return have >= want; |
| } |
| |
| #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) |
| |
| int __vio_register_driver(struct vio_driver *drv, struct module *owner, |
| const char *mod_name); |
| /* |
| * vio_register_driver must be a macro so that KBUILD_MODNAME can be expanded |
| */ |
| #define vio_register_driver(driver) \ |
| __vio_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) |
| 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); |
| } |
| |
| int vio_ldc_send(struct vio_driver_state *vio, void *data, int len); |
| void vio_link_state_change(struct vio_driver_state *vio, int event); |
| void vio_conn_reset(struct vio_driver_state *vio); |
| int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt); |
| int vio_validate_sid(struct vio_driver_state *vio, |
| struct vio_msg_tag *tp); |
| u32 vio_send_sid(struct vio_driver_state *vio); |
| int vio_ldc_alloc(struct vio_driver_state *vio, |
| struct ldc_channel_config *base_cfg, void *event_arg); |
| void vio_ldc_free(struct vio_driver_state *vio); |
| 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); |
| |
| void vio_port_up(struct vio_driver_state *vio); |
| int vio_set_intr(unsigned long dev_ino, int state); |
| u64 vio_vdev_node(struct mdesc_handle *hp, struct vio_dev *vdev); |
| |
| #endif /* _SPARC64_VIO_H */ |