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Diffstat (limited to 'include/asm-s390/qdio.h')
| -rw-r--r-- | include/asm-s390/qdio.h | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/include/asm-s390/qdio.h b/include/asm-s390/qdio.h new file mode 100644 index 00000000000..0ddf0a8ef8d --- /dev/null +++ b/include/asm-s390/qdio.h @@ -0,0 +1,401 @@ +/* + * 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__ + +#define VERSION_QDIO_H "$Revision: 1.57 $" + +/* 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 +struct qib { + 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; /* 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__ */ |