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-rw-r--r--arch/s390/include/asm/qdio.h382
1 files changed, 382 insertions, 0 deletions
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
new file mode 100644
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+++ b/arch/s390/include/asm/qdio.h
@@ -0,0 +1,382 @@
+/*
+ * 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>
+
+#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;
+ u64:64;
+} __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_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 *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 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 *);
+extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev);
+
+#endif /* __QDIO_H__ */