[S390] qdio: new qdio driver.
List of major changes:
- split qdio driver into several files
- seperation of thin interrupt code
- improved handling for multiple thin interrupt devices
- inbound and outbound processing now always runs in tasklet context
- significant less tasklet schedules per interrupt needed
- merged qebsm with non-qebsm handling
- cleanup qdio interface and added kerneldoc
- coding style
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/include/asm-s390/qdio.h b/include/asm-s390/qdio.h
index 1124034..6813772 100644
--- a/include/asm-s390/qdio.h
+++ b/include/asm-s390/qdio.h
@@ -1,404 +1,382 @@
/*
* linux/include/asm-s390/qdio.h
*
- * Linux for S/390 QDIO base support, Hipersocket base support
- * version 2
- *
- * Copyright 2000,2002 IBM Corporation
+ * 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__
-/* 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 "
+#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
-#ifndef __s390x__
-#define QDIO_32_BIT
-#endif /* __s390x__ */
+#define QDIO_QETH_QFMT 0
+#define QDIO_ZFCP_QFMT 1
+#define QDIO_IQDIO_QFMT 2
-/**** 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
+/**
+ * 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 QDIO_QETH_QFMT 0
-#define QDIO_ZFCP_QFMT 1
-#define QDIO_IQDIO_QFMT 2
-#define QDIO_IQDIO_QFMT_ASYNCH 3
+/**
+ * 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)));
-struct qdio_buffer_element{
- unsigned int flags;
- unsigned int length;
-#ifdef QDIO_32_BIT
+#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;
-#endif /* QDIO_32_BIT */
+ /* public: */
+#endif
void *addr;
-} __attribute__ ((packed,aligned(16)));
+} __attribute__ ((packed, aligned(16)));
-struct qdio_buffer{
- volatile struct qdio_buffer_element element[16];
-} __attribute__ ((packed,aligned(256)));
+/**
+ * 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));
-/* 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);
+/**
+ * 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 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
+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;
+ u64:64;
+} __attribute__ ((packed));
-#define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10
-#define QDIO_SIGA_ERROR_B_BIT_SET 0x20
+/* 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_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
+#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
+#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; /*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 int qib_param_field_format;
+ unsigned char *qib_param_field;
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 */
+ 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 *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 *);
-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
-#define QDIO_FLAG_PCI_OUT 0x20
-
-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_get_ssqd_pct(struct ccw_device*);
-extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
- unsigned int queue_number);
-
+extern int do_QDIO(struct ccw_device*, unsigned int flags,
+ int q_nr, int qidx, int count);
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-information-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
+extern int qdio_free(struct ccw_device *);
+extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev);
#endif /* __QDIO_H__ */