| /* |
| * 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)); |
| |
| /** |
| * 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_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 |
| * @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; |
| 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_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_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__ */ |
