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/* SPDX-License-Identifier: GPL-2.0 / #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 */

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