/* * linux/include/asm-s390/qdio.h * * Copyright 2000,2008 IBM Corp. * Author(s): Utz Bacher * Jan Glauber * */ #ifndef __QDIO_H__ #define __QDIO_H__ #include #include #include #define QDIO_MAX_QUEUES_PER_IRQ 32 #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)); /** * 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 /** * 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 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))); /** * struct sbal_flags - storage block address list flags * @last: last entry * @cont: contiguous storage * @frag: fragmentation */ struct sbal_flags { u8 : 1; u8 last : 1; u8 cont : 1; u8 : 1; u8 frag : 2; u8 : 2; } __attribute__ ((packed)); #define SBAL_FLAGS_FIRST_FRAG 0x04000000UL #define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL #define SBAL_FLAGS_LAST_FRAG 0x0c000000UL #define SBAL_FLAGS_LAST_ENTRY 0x40000000UL #define SBAL_FLAGS_CONTIGUOUS 0x20000000UL #define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL /* Awesome OpenFCP extensions */ #define SBAL_FLAGS0_TYPE_STATUS 0x00UL #define SBAL_FLAGS0_TYPE_WRITE 0x08UL #define SBAL_FLAGS0_TYPE_READ 0x10UL #define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL #define SBAL_FLAGS0_MORE_SBALS 0x04UL #define SBAL_FLAGS0_COMMAND 0x02UL #define SBAL_FLAGS0_LAST_SBAL 0x00UL #define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND #define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS #define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND #define SBAL_FLAGS0_PCI 0x40 /** * struct sbal_sbalf_0 - sbal flags for sbale 0 * @pci: PCI indicator * @cont: data continuation * @sbtype: storage-block type (FCP) */ struct sbal_sbalf_0 { u8 : 1; u8 pci : 1; u8 cont : 1; u8 sbtype : 2; u8 : 3; } __attribute__ ((packed)); /** * struct sbal_sbalf_1 - sbal flags for sbale 1 * @key: storage key */ struct sbal_sbalf_1 { u8 : 4; u8 key : 4; } __attribute__ ((packed)); /** * struct sbal_sbalf_14 - sbal flags for sbale 14 * @erridx: error index */ struct sbal_sbalf_14 { u8 : 4; u8 erridx : 4; } __attribute__ ((packed)); /** * struct sbal_sbalf_15 - sbal flags for sbale 15 * @reason: reason for error state */ struct sbal_sbalf_15 { u8 reason; } __attribute__ ((packed)); /** * union sbal_sbalf - storage block address list flags * @i0: sbalf0 * @i1: sbalf1 * @i14: sbalf14 * @i15: sblaf15 * @value: raw value */ union sbal_sbalf { struct sbal_sbalf_0 i0; struct sbal_sbalf_1 i1; struct sbal_sbalf_14 i14; struct sbal_sbalf_15 i15; u8 value; }; /** * struct qdio_buffer_element - SBAL entry * @flags: flags * @length: length * @addr: address */ struct qdio_buffer_element { u32 flags; u32 length; #ifdef CONFIG_32BIT /* private: */ void *reserved; /* 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))); 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; u8:8; u8 sbalic; 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_initialize */ #define QDIO_INBOUND_0COPY_SBALS 0x01 #define QDIO_OUTBOUND_0COPY_SBALS 0x02 #define QDIO_USE_OUTBOUND_PCIS 0x04 /* 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 * @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 * @int_parm: interruption parameter * @flags: initialization flags * @input_sbal_addr_array: address of no_input_qs * 128 pointers * @output_sbal_addr_array: address of no_output_qs * 128 pointers */ struct qdio_initialize { struct ccw_device *cdev; unsigned char q_format; unsigned char adapter_name[8]; unsigned int qib_param_field_format; unsigned char *qib_param_field; 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; unsigned long int_parm; unsigned long flags; void **input_sbal_addr_array; void **output_sbal_addr_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_initialize(struct qdio_initialize *); extern int qdio_allocate(struct qdio_initialize *); extern int qdio_establish(struct qdio_initialize *); extern int qdio_activate(struct ccw_device *); extern int do_QDIO(struct ccw_device *cdev, unsigned int callflags, int q_nr, unsigned int bufnr, unsigned int count); extern int qdio_cleanup(struct ccw_device*, 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 *dev, struct qdio_ssqd_desc*); #endif /* __QDIO_H__ */