| /* |
| * linux/include/asm-s390/qdio.h |
| * |
| * Copyright 2000,2008 IBM Corp. |
| * Author(s): Utz Bacher <utz.bacher@de.ibm.com> |
| * Jan Glauber <jang@linux.vnet.ibm.com> |
| * |
| */ |
| #ifndef __QDIO_H__ |
| #define __QDIO_H__ |
| |
| #include <linux/interrupt.h> |
| #include <asm/cio.h> |
| #include <asm/ccwdev.h> |
| |
| /* only use 4 queues to save some cachelines */ |
| #define QDIO_MAX_QUEUES_PER_IRQ 4 |
| #define QDIO_MAX_BUFFERS_PER_Q 128 |
| #define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1) |
| #define QDIO_MAX_ELEMENTS_PER_BUFFER 16 |
| #define QDIO_SBAL_SIZE 256 |
| |
| #define QDIO_QETH_QFMT 0 |
| #define QDIO_ZFCP_QFMT 1 |
| #define QDIO_IQDIO_QFMT 2 |
| |
| /** |
| * struct qdesfmt0 - queue descriptor, format 0 |
| * @sliba: storage list information block address |
| * @sla: storage list address |
| * @slsba: storage list state block address |
| * @akey: access key for DLIB |
| * @bkey: access key for SL |
| * @ckey: access key for SBALs |
| * @dkey: access key for SLSB |
| */ |
| struct qdesfmt0 { |
| u64 sliba; |
| u64 sla; |
| u64 slsba; |
| u32 : 32; |
| u32 akey : 4; |
| u32 bkey : 4; |
| u32 ckey : 4; |
| u32 dkey : 4; |
| u32 : 16; |
| } __attribute__ ((packed)); |
| |
| #define QDR_AC_MULTI_BUFFER_ENABLE 0x01 |
| |
| /** |
| * struct qdr - queue description record (QDR) |
| * @qfmt: queue format |
| * @pfmt: implementation dependent parameter format |
| * @ac: adapter characteristics |
| * @iqdcnt: input queue descriptor count |
| * @oqdcnt: output queue descriptor count |
| * @iqdsz: inpout queue descriptor size |
| * @oqdsz: output queue descriptor size |
| * @qiba: queue information block address |
| * @qkey: queue information block key |
| * @qdf0: queue descriptions |
| */ |
| struct qdr { |
| u32 qfmt : 8; |
| u32 pfmt : 8; |
| u32 : 8; |
| u32 ac : 8; |
| u32 : 8; |
| u32 iqdcnt : 8; |
| u32 : 8; |
| u32 oqdcnt : 8; |
| u32 : 8; |
| u32 iqdsz : 8; |
| u32 : 8; |
| u32 oqdsz : 8; |
| /* private: */ |
| u32 res[9]; |
| /* public: */ |
| u64 qiba; |
| u32 : 32; |
| u32 qkey : 4; |
| u32 : 28; |
| struct qdesfmt0 qdf0[126]; |
| } __attribute__ ((packed, aligned(4096))); |
| |
| #define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40 |
| #define QIB_RFLAGS_ENABLE_QEBSM 0x80 |
| #define QIB_RFLAGS_ENABLE_DATA_DIV 0x02 |
| |
| /** |
| * struct qib - queue information block (QIB) |
| * @qfmt: queue format |
| * @pfmt: implementation dependent parameter format |
| * @rflags: QEBSM |
| * @ac: adapter characteristics |
| * @isliba: absolute address of first input SLIB |
| * @osliba: absolute address of first output SLIB |
| * @ebcnam: adapter identifier in EBCDIC |
| * @parm: implementation dependent parameters |
| */ |
| struct qib { |
| u32 qfmt : 8; |
| u32 pfmt : 8; |
| u32 rflags : 8; |
| u32 ac : 8; |
| u32 : 32; |
| u64 isliba; |
| u64 osliba; |
| u32 : 32; |
| u32 : 32; |
| u8 ebcnam[8]; |
| /* private: */ |
| u8 res[88]; |
| /* public: */ |
| u8 parm[QDIO_MAX_BUFFERS_PER_Q]; |
| } __attribute__ ((packed, aligned(256))); |
| |
| /** |
| * struct slibe - storage list information block element (SLIBE) |
| * @parms: implementation dependent parameters |
| */ |
| struct slibe { |
| u64 parms; |
| }; |
| |
| /** |
| * struct qaob - queue asynchronous operation block |
| * @res0: reserved parameters |
| * @res1: reserved parameter |
| * @res2: reserved parameter |
| * @res3: reserved parameter |
| * @aorc: asynchronous operation return code |
| * @flags: internal flags |
| * @cbtbs: control block type |
| * @sb_count: number of storage blocks |
| * @sba: storage block element addresses |
| * @dcount: size of storage block elements |
| * @user0: user defineable value |
| * @res4: reserved paramater |
| * @user1: user defineable value |
| * @user2: user defineable value |
| */ |
| struct qaob { |
| u64 res0[6]; |
| u8 res1; |
| u8 res2; |
| u8 res3; |
| u8 aorc; |
| u8 flags; |
| u16 cbtbs; |
| u8 sb_count; |
| u64 sba[QDIO_MAX_ELEMENTS_PER_BUFFER]; |
| u16 dcount[QDIO_MAX_ELEMENTS_PER_BUFFER]; |
| u64 user0; |
| u64 res4[2]; |
| u64 user1; |
| u64 user2; |
| } __attribute__ ((packed, aligned(256))); |
| |
| /** |
| * struct slib - storage list information block (SLIB) |
| * @nsliba: next SLIB address (if any) |
| * @sla: SL address |
| * @slsba: SLSB address |
| * @slibe: SLIB elements |
| */ |
| struct slib { |
| u64 nsliba; |
| u64 sla; |
| u64 slsba; |
| /* private: */ |
| u8 res[1000]; |
| /* public: */ |
| struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; |
| } __attribute__ ((packed, aligned(2048))); |
| |
| #define SBAL_EFLAGS_LAST_ENTRY 0x40 |
| #define SBAL_EFLAGS_CONTIGUOUS 0x20 |
| #define SBAL_EFLAGS_FIRST_FRAG 0x04 |
| #define SBAL_EFLAGS_MIDDLE_FRAG 0x08 |
| #define SBAL_EFLAGS_LAST_FRAG 0x0c |
| #define SBAL_EFLAGS_MASK 0x6f |
| |
| #define SBAL_SFLAGS0_PCI_REQ 0x40 |
| #define SBAL_SFLAGS0_DATA_CONTINUATION 0x20 |
| |
| /* Awesome OpenFCP extensions */ |
| #define SBAL_SFLAGS0_TYPE_STATUS 0x00 |
| #define SBAL_SFLAGS0_TYPE_WRITE 0x08 |
| #define SBAL_SFLAGS0_TYPE_READ 0x10 |
| #define SBAL_SFLAGS0_TYPE_WRITE_READ 0x18 |
| #define SBAL_SFLAGS0_MORE_SBALS 0x04 |
| #define SBAL_SFLAGS0_COMMAND 0x02 |
| #define SBAL_SFLAGS0_LAST_SBAL 0x00 |
| #define SBAL_SFLAGS0_ONLY_SBAL SBAL_SFLAGS0_COMMAND |
| #define SBAL_SFLAGS0_MIDDLE_SBAL SBAL_SFLAGS0_MORE_SBALS |
| #define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND) |
| |
| /** |
| * struct qdio_buffer_element - SBAL entry |
| * @eflags: SBAL entry flags |
| * @scount: SBAL count |
| * @sflags: whole SBAL flags |
| * @length: length |
| * @addr: address |
| */ |
| struct qdio_buffer_element { |
| u8 eflags; |
| /* private: */ |
| u8 res1; |
| /* public: */ |
| u8 scount; |
| u8 sflags; |
| u32 length; |
| #ifdef CONFIG_32BIT |
| /* private: */ |
| void *res2; |
| /* public: */ |
| #endif |
| void *addr; |
| } __attribute__ ((packed, aligned(16))); |
| |
| /** |
| * struct qdio_buffer - storage block address list (SBAL) |
| * @element: SBAL entries |
| */ |
| struct qdio_buffer { |
| struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER]; |
| } __attribute__ ((packed, aligned(256))); |
| |
| /** |
| * struct sl_element - storage list entry |
| * @sbal: absolute SBAL address |
| */ |
| struct sl_element { |
| #ifdef CONFIG_32BIT |
| /* private: */ |
| unsigned long reserved; |
| /* public: */ |
| #endif |
| unsigned long sbal; |
| } __attribute__ ((packed)); |
| |
| /** |
| * struct sl - storage list (SL) |
| * @element: SL entries |
| */ |
| struct sl { |
| struct sl_element element[QDIO_MAX_BUFFERS_PER_Q]; |
| } __attribute__ ((packed, aligned(1024))); |
| |
| /** |
| * struct slsb - storage list state block (SLSB) |
| * @val: state per buffer |
| */ |
| struct slsb { |
| u8 val[QDIO_MAX_BUFFERS_PER_Q]; |
| } __attribute__ ((packed, aligned(256))); |
| |
| #define CHSC_AC2_MULTI_BUFFER_AVAILABLE 0x0080 |
| #define CHSC_AC2_MULTI_BUFFER_ENABLED 0x0040 |
| #define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 |
| #define CHSC_AC2_DATA_DIV_ENABLED 0x0002 |
| |
| /** |
| * struct qdio_outbuf_state - SBAL related asynchronous operation information |
| * (for communication with upper layer programs) |
| * (only required for use with completion queues) |
| * @flags: flags indicating state of buffer |
| * @aob: pointer to QAOB used for the particular SBAL |
| * @user: pointer to upper layer program's state information related to SBAL |
| * (stored in user1 data of QAOB) |
| */ |
| struct qdio_outbuf_state { |
| u8 flags; |
| struct qaob *aob; |
| void *user; |
| }; |
| |
| #define QDIO_OUTBUF_STATE_FLAG_NONE 0x00 |
| #define QDIO_OUTBUF_STATE_FLAG_PENDING 0x01 |
| |
| #define CHSC_AC1_INITIATE_INPUTQ 0x80 |
| |
| |
| /* qdio adapter-characteristics-1 flag */ |
| #define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */ |
| #define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */ |
| #define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */ |
| #define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */ |
| #define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */ |
| #define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */ |
| #define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */ |
| |
| #define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 |
| #define CHSC_AC2_DATA_DIV_ENABLED 0x0002 |
| |
| #define CHSC_AC3_FORMAT2_CQ_AVAILABLE 0x8000 |
| |
| struct qdio_ssqd_desc { |
| u8 flags; |
| u8:8; |
| u16 sch; |
| u8 qfmt; |
| u8 parm; |
| u8 qdioac1; |
| u8 sch_class; |
| u8 pcnt; |
| u8 icnt; |
| u8:8; |
| u8 ocnt; |
| u8:8; |
| u8 mbccnt; |
| u16 qdioac2; |
| u64 sch_token; |
| u8 mro; |
| u8 mri; |
| u16 qdioac3; |
| u16:16; |
| u8:8; |
| u8 mmwc; |
| } __attribute__ ((packed)); |
| |
| /* params are: ccw_device, qdio_error, queue_number, |
| first element processed, number of elements processed, int_parm */ |
| typedef void qdio_handler_t(struct ccw_device *, unsigned int, int, |
| int, int, unsigned long); |
| |
| /* qdio errors reported to the upper-layer program */ |
| #define QDIO_ERROR_SIGA_TARGET 0x02 |
| #define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10 |
| #define QDIO_ERROR_SIGA_BUSY 0x20 |
| #define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40 |
| #define QDIO_ERROR_SLSB_STATE 0x80 |
| |
| /* for qdio_cleanup */ |
| #define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01 |
| #define QDIO_FLAG_CLEANUP_USING_HALT 0x02 |
| |
| /** |
| * struct qdio_initialize - qdio initalization data |
| * @cdev: associated ccw device |
| * @q_format: queue format |
| * @adapter_name: name for the adapter |
| * @qib_param_field_format: format for qib_parm_field |
| * @qib_param_field: pointer to 128 bytes or NULL, if no param field |
| * @qib_rflags: rflags to set |
| * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL |
| * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL |
| * @no_input_qs: number of input queues |
| * @no_output_qs: number of output queues |
| * @input_handler: handler to be called for input queues |
| * @output_handler: handler to be called for output queues |
| * @queue_start_poll_array: polling handlers (one per input queue or NULL) |
| * @int_parm: interruption parameter |
| * @input_sbal_addr_array: address of no_input_qs * 128 pointers |
| * @output_sbal_addr_array: address of no_output_qs * 128 pointers |
| * @output_sbal_state_array: no_output_qs * 128 state info (for CQ or NULL) |
| */ |
| struct qdio_initialize { |
| struct ccw_device *cdev; |
| unsigned char q_format; |
| unsigned char qdr_ac; |
| unsigned char adapter_name[8]; |
| unsigned int qib_param_field_format; |
| unsigned char *qib_param_field; |
| unsigned char qib_rflags; |
| unsigned long *input_slib_elements; |
| unsigned long *output_slib_elements; |
| unsigned int no_input_qs; |
| unsigned int no_output_qs; |
| qdio_handler_t *input_handler; |
| qdio_handler_t *output_handler; |
| void (**queue_start_poll_array) (struct ccw_device *, int, |
| unsigned long); |
| int scan_threshold; |
| unsigned long int_parm; |
| void **input_sbal_addr_array; |
| void **output_sbal_addr_array; |
| struct qdio_outbuf_state *output_sbal_state_array; |
| }; |
| |
| #define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */ |
| #define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_establish */ |
| #define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */ |
| #define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */ |
| |
| #define QDIO_FLAG_SYNC_INPUT 0x01 |
| #define QDIO_FLAG_SYNC_OUTPUT 0x02 |
| #define QDIO_FLAG_PCI_OUT 0x10 |
| |
| extern int qdio_allocate(struct qdio_initialize *); |
| extern int qdio_establish(struct qdio_initialize *); |
| extern int qdio_activate(struct ccw_device *); |
| extern void qdio_release_aob(struct qaob *); |
| extern int do_QDIO(struct ccw_device *, unsigned int, int, unsigned int, |
| unsigned int); |
| extern int qdio_start_irq(struct ccw_device *, int); |
| extern int qdio_stop_irq(struct ccw_device *, int); |
| extern int qdio_get_next_buffers(struct ccw_device *, int, int *, int *); |
| extern int qdio_shutdown(struct ccw_device *, int); |
| extern int qdio_free(struct ccw_device *); |
| extern int qdio_get_ssqd_desc(struct ccw_device *, struct qdio_ssqd_desc *); |
| |
| #endif /* __QDIO_H__ */ |
