/* * linux/include/asm/qdio.h * * Linux for S/390 QDIO base support, Hipersocket base support * version 2 * * Copyright 2000,2002 IBM Corporation * Author(s): Utz Bacher <utz.bacher@de.ibm.com> * */ #ifndef __QDIO_H__ #define __QDIO_H__ /* note, that most of the typedef's are from ingo. */ #include <linux/interrupt.h> #include <asm/cio.h> #include <asm/ccwdev.h> #define QDIO_NAME "qdio " #ifndef __s390x__ #define QDIO_32_BIT #endif /* __s390x__ */ /**** CONSTANTS, that are relied on without using these symbols *****/ #define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */ /************************ END of CONSTANTS **************************/ #define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/ #define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */ #define QDIO_MAX_ELEMENTS_PER_BUFFER 16 #define SBAL_SIZE 256 #define QDIO_QETH_QFMT 0 #define QDIO_ZFCP_QFMT 1 #define QDIO_IQDIO_QFMT 2 struct qdio_buffer_element{ unsigned int flags; unsigned int length; #ifdef QDIO_32_BIT void *reserved; #endif /* QDIO_32_BIT */ void *addr; } __attribute__ ((packed,aligned(16))); struct qdio_buffer{ volatile struct qdio_buffer_element element[16]; } __attribute__ ((packed,aligned(256))); /* params are: ccw_device, status, qdio_error, siga_error, queue_number, first element processed, number of elements processed, int_parm */ typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int, unsigned int,unsigned int,int,int,unsigned long); #define QDIO_STATUS_INBOUND_INT 0x01 #define QDIO_STATUS_OUTBOUND_INT 0x02 #define QDIO_STATUS_LOOK_FOR_ERROR 0x04 #define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08 #define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10 #define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20 #define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10 #define QDIO_SIGA_ERROR_B_BIT_SET 0x20 /* 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 { struct ccw_device *cdev; unsigned char q_format; unsigned char adapter_name[8]; unsigned int qib_param_field_format; /*adapter dependent*/ /* pointer to 128 bytes or NULL, if no param field */ unsigned char *qib_param_field; /* adapter dependent */ /* pointer to no_queues*128 words of data or NULL */ unsigned long *input_slib_elements; unsigned long *output_slib_elements; unsigned int min_input_threshold; unsigned int max_input_threshold; unsigned int min_output_threshold; unsigned int max_output_threshold; 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; /* addr of n*128 void ptrs */ void **output_sbal_addr_array; /* addr of n*128 void ptrs */ }; extern int qdio_initialize(struct qdio_initialize *init_data); extern int qdio_allocate(struct qdio_initialize *init_data); extern int qdio_establish(struct qdio_initialize *init_data); extern int qdio_activate(struct ccw_device *,int flags); #define QDIO_STATE_MUST_USE_OUTB_PCI 0x00000001 #define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */ #define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_initialize */ #define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */ #define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */ extern unsigned long qdio_get_status(int irq); #define QDIO_FLAG_SYNC_INPUT 0x01 #define QDIO_FLAG_SYNC_OUTPUT 0x02 #define QDIO_FLAG_UNDER_INTERRUPT 0x04 #define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on adapter interrupts */ #define QDIO_FLAG_DONT_SIGA 0x10 extern int do_QDIO(struct ccw_device*, unsigned int flags, unsigned int queue_number, unsigned int qidx,unsigned int count, struct qdio_buffer *buffers); extern int qdio_synchronize(struct ccw_device*, unsigned int flags, unsigned int queue_number); extern int qdio_cleanup(struct ccw_device*, int how); extern int qdio_shutdown(struct ccw_device*, int how); extern int qdio_free(struct ccw_device*); unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag, unsigned int queue_number, unsigned int qidx); extern void qdio_init_scrubber(void); struct qdesfmt0 { #ifdef QDIO_32_BIT unsigned long res1; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long sliba; /* storage-list-information-block address */ #ifdef QDIO_32_BIT unsigned long res2; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long sla; /* storage-list address */ #ifdef QDIO_32_BIT unsigned long res3; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long slsba; /* storage-list-state-block address */ unsigned int res4; /* reserved */ unsigned int akey : 4; /* access key for DLIB */ unsigned int bkey : 4; /* access key for SL */ unsigned int ckey : 4; /* access key for SBALs */ unsigned int dkey : 4; /* access key for SLSB */ unsigned int res5 : 16; /* reserved */ } __attribute__ ((packed)); /* * Queue-Description record (QDR) */ struct qdr { unsigned int qfmt : 8; /* queue format */ unsigned int pfmt : 8; /* impl. dep. parameter format */ unsigned int res1 : 8; /* reserved */ unsigned int ac : 8; /* adapter characteristics */ unsigned int res2 : 8; /* reserved */ unsigned int iqdcnt : 8; /* input-queue-descriptor count */ unsigned int res3 : 8; /* reserved */ unsigned int oqdcnt : 8; /* output-queue-descriptor count */ unsigned int res4 : 8; /* reserved */ unsigned int iqdsz : 8; /* input-queue-descriptor size */ unsigned int res5 : 8; /* reserved */ unsigned int oqdsz : 8; /* output-queue-descriptor size */ unsigned int res6[9]; /* reserved */ #ifdef QDIO_32_BIT unsigned long res7; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long qiba; /* queue-information-block address */ unsigned int res8; /* reserved */ unsigned int qkey : 4; /* queue-informatio-block key */ unsigned int res9 : 28; /* reserved */ /* union _qd {*/ /* why this? */ struct qdesfmt0 qdf0[126]; /* } qd;*/ } __attribute__ ((packed,aligned(4096))); /* * queue information block (QIB) */ #define QIB_AC_INBOUND_PCI_SUPPORTED 0x80 #define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40 #define QIB_RFLAGS_ENABLE_QEBSM 0x80 struct qib { unsigned int qfmt : 8; /* queue format */ unsigned int pfmt : 8; /* impl. dep. parameter format */ unsigned int rflags : 8; /* QEBSM */ unsigned int ac : 8; /* adapter characteristics */ unsigned int res2; /* reserved */ #ifdef QDIO_32_BIT unsigned long res3; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long isliba; /* absolute address of 1st input SLIB */ #ifdef QDIO_32_BIT unsigned long res4; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long osliba; /* absolute address of 1st output SLIB */ unsigned int res5; /* reserved */ unsigned int res6; /* reserved */ unsigned char ebcnam[8]; /* adapter identifier in EBCDIC */ unsigned char res7[88]; /* reserved */ unsigned char parm[QDIO_MAX_BUFFERS_PER_Q]; /* implementation dependent parameters */ } __attribute__ ((packed,aligned(256))); /* * storage-list-information block element (SLIBE) */ struct slibe { #ifdef QDIO_32_BIT unsigned long res; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long parms; /* implementation dependent parameters */ }; /* * storage-list-information block (SLIB) */ struct slib { #ifdef QDIO_32_BIT unsigned long res1; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long nsliba; /* next SLIB address (if any) */ #ifdef QDIO_32_BIT unsigned long res2; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long sla; /* SL address */ #ifdef QDIO_32_BIT unsigned long res3; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long slsba; /* SLSB address */ unsigned char res4[1000]; /* reserved */ struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; /* SLIB elements */ } __attribute__ ((packed,aligned(2048))); struct sbal_flags { unsigned char res1 : 1; /* reserved */ unsigned char last : 1; /* last entry */ unsigned char cont : 1; /* contiguous storage */ unsigned char res2 : 1; /* reserved */ unsigned char frag : 2; /* fragmentation (s.below) */ unsigned char res3 : 2; /* reserved */ } __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 /* Naught of interest beyond this point */ #define SBAL_FLAGS0_PCI 0x40 struct sbal_sbalf_0 { unsigned char res1 : 1; /* reserved */ unsigned char pci : 1; /* PCI indicator */ unsigned char cont : 1; /* data continuation */ unsigned char sbtype: 2; /* storage-block type (OpenFCP) */ unsigned char res2 : 3; /* reserved */ } __attribute__ ((packed)); struct sbal_sbalf_1 { unsigned char res1 : 4; /* reserved */ unsigned char key : 4; /* storage key */ } __attribute__ ((packed)); struct sbal_sbalf_14 { unsigned char res1 : 4; /* reserved */ unsigned char erridx : 4; /* error index */ } __attribute__ ((packed)); struct sbal_sbalf_15 { unsigned char reason; /* reserved */ } __attribute__ ((packed)); union sbal_sbalf { struct sbal_sbalf_0 i0; struct sbal_sbalf_1 i1; struct sbal_sbalf_14 i14; struct sbal_sbalf_15 i15; unsigned char value; }; struct sbal_element { union { struct sbal_flags bits; /* flags */ unsigned char value; } flags; unsigned int res1 : 16; /* reserved */ union sbal_sbalf sbalf; /* SBAL flags */ unsigned int res2 : 16; /* reserved */ unsigned int count : 16; /* data count */ #ifdef QDIO_32_BIT unsigned long res3; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long addr; /* absolute data address */ } __attribute__ ((packed,aligned(16))); /* * strorage-block access-list (SBAL) */ struct sbal { struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER]; } __attribute__ ((packed,aligned(256))); /* * storage-list (SL) */ struct sl_element { #ifdef QDIO_32_BIT unsigned long res; /* reserved */ #endif /* QDIO_32_BIT */ unsigned long sbal; /* absolute SBAL address */ } __attribute__ ((packed)); struct sl { struct sl_element element[QDIO_MAX_BUFFERS_PER_Q]; } __attribute__ ((packed,aligned(1024))); /* * storage-list-state block (SLSB) */ struct slsb_flags { unsigned char owner : 2; /* SBAL owner */ unsigned char type : 1; /* buffer type */ unsigned char state : 5; /* processing state */ } __attribute__ ((packed)); struct slsb { union { unsigned char val[QDIO_MAX_BUFFERS_PER_Q]; struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q]; } acc; } __attribute__ ((packed,aligned(256))); /* * SLSB values */ #define SLSB_OWNER_PROG 1 #define SLSB_OWNER_CU 2 #define SLSB_TYPE_INPUT 0 #define SLSB_TYPE_OUTPUT 1 #define SLSB_STATE_NOT_INIT 0 #define SLSB_STATE_EMPTY 1 #define SLSB_STATE_PRIMED 2 #define SLSB_STATE_HALTED 0xe #define SLSB_STATE_ERROR 0xf #define SLSB_P_INPUT_NOT_INIT 0x80 #define SLSB_P_INPUT_PROCESSING 0x81 #define SLSB_CU_INPUT_EMPTY 0x41 #define SLSB_P_INPUT_PRIMED 0x82 #define SLSB_P_INPUT_HALTED 0x8E #define SLSB_P_INPUT_ERROR 0x8F #define SLSB_P_OUTPUT_NOT_INIT 0xA0 #define SLSB_P_OUTPUT_EMPTY 0xA1 #define SLSB_CU_OUTPUT_PRIMED 0x62 #define SLSB_P_OUTPUT_HALTED 0xAE #define SLSB_P_OUTPUT_ERROR 0xAF #define SLSB_ERROR_DURING_LOOKUP 0xFF #endif /* __QDIO_H__ */