Initial import

1 files changed, 430 insertions, 0 deletions

diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
new file mode 100644
index 000000000..998b61cd0
--- /dev/null
+++ b/arch/s390/include/asm/qdio.h
@@ -0,0 +1,430 @@
+/*
+ * Copyright IBM Corp. 2000, 2008
+ * 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));
+
+#define QDR_AC_MULTI_BUFFER_ENABLE 0x01
+
+/**
+ * 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
+#define QIB_RFLAGS_ENABLE_DATA_DIV	0x02
+
+/**
+ * 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 qaob - queue asynchronous operation block
+ * @res0: reserved parameters
+ * @res1: reserved parameter
+ * @res2: reserved parameter
+ * @res3: reserved parameter
+ * @aorc: asynchronous operation return code
+ * @flags: internal flags
+ * @cbtbs: control block type
+ * @sb_count: number of storage blocks
+ * @sba: storage block element addresses
+ * @dcount: size of storage block elements
+ * @user0: user defineable value
+ * @res4: reserved paramater
+ * @user1: user defineable value
+ * @user2: user defineable value
+ */
+struct qaob {
+	u64 res0[6];
+	u8 res1;
+	u8 res2;
+	u8 res3;
+	u8 aorc;
+	u8 flags;
+	u16 cbtbs;
+	u8 sb_count;
+	u64 sba[QDIO_MAX_ELEMENTS_PER_BUFFER];
+	u16 dcount[QDIO_MAX_ELEMENTS_PER_BUFFER];
+	u64 user0;
+	u64 res4[2];
+	u64 user1;
+	u64 user2;
+} __attribute__ ((packed, aligned(256)));
+
+/**
+ * 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)));
+
+#define SBAL_EFLAGS_LAST_ENTRY		0x40
+#define SBAL_EFLAGS_CONTIGUOUS		0x20
+#define SBAL_EFLAGS_FIRST_FRAG		0x04
+#define SBAL_EFLAGS_MIDDLE_FRAG		0x08
+#define SBAL_EFLAGS_LAST_FRAG		0x0c
+#define SBAL_EFLAGS_MASK		0x6f
+
+#define SBAL_SFLAGS0_PCI_REQ		0x40
+#define SBAL_SFLAGS0_DATA_CONTINUATION	0x20
+
+/* Awesome OpenFCP extensions */
+#define SBAL_SFLAGS0_TYPE_STATUS	0x00
+#define SBAL_SFLAGS0_TYPE_WRITE		0x08
+#define SBAL_SFLAGS0_TYPE_READ		0x10
+#define SBAL_SFLAGS0_TYPE_WRITE_READ	0x18
+#define SBAL_SFLAGS0_MORE_SBALS		0x04
+#define SBAL_SFLAGS0_COMMAND		0x02
+#define SBAL_SFLAGS0_LAST_SBAL		0x00
+#define SBAL_SFLAGS0_ONLY_SBAL		SBAL_SFLAGS0_COMMAND
+#define SBAL_SFLAGS0_MIDDLE_SBAL	SBAL_SFLAGS0_MORE_SBALS
+#define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND)
+
+/**
+ * struct qdio_buffer_element - SBAL entry
+ * @eflags: SBAL entry flags
+ * @scount: SBAL count
+ * @sflags: whole SBAL flags
+ * @length: length
+ * @addr: address
+*/
+struct qdio_buffer_element {
+	u8 eflags;
+	/* private: */
+	u8 res1;
+	/* public: */
+	u8 scount;
+	u8 sflags;
+	u32 length;
+	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 {
+	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_outbuf_state - SBAL related asynchronous operation information
+ *   (for communication with upper layer programs)
+ *   (only required for use with completion queues)
+ * @flags: flags indicating state of buffer
+ * @aob: pointer to QAOB used for the particular SBAL
+ * @user: pointer to upper layer program's state information related to SBAL
+ *        (stored in user1 data of QAOB)
+ */
+struct qdio_outbuf_state {
+	u8 flags;
+	struct qaob *aob;
+	void *user;
+};
+
+#define QDIO_OUTBUF_STATE_FLAG_NONE	0x00
+#define QDIO_OUTBUF_STATE_FLAG_PENDING	0x01
+
+#define CHSC_AC1_INITIATE_INPUTQ	0x80
+
+
+/* qdio adapter-characteristics-1 flag */
+#define AC1_SIGA_INPUT_NEEDED		0x40	/* process input queues */
+#define AC1_SIGA_OUTPUT_NEEDED		0x20	/* process output queues */
+#define AC1_SIGA_SYNC_NEEDED		0x10	/* ask hypervisor to sync */
+#define AC1_AUTOMATIC_SYNC_ON_THININT	0x08	/* set by hypervisor */
+#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI	0x04	/* set by hypervisor */
+#define AC1_SC_QEBSM_AVAILABLE		0x02	/* available for subchannel */
+#define AC1_SC_QEBSM_ENABLED		0x01	/* enabled for subchannel */
+
+#define CHSC_AC2_MULTI_BUFFER_AVAILABLE	0x0080
+#define CHSC_AC2_MULTI_BUFFER_ENABLED	0x0040
+#define CHSC_AC2_DATA_DIV_AVAILABLE	0x0010
+#define CHSC_AC2_DATA_DIV_ENABLED	0x0002
+
+#define CHSC_AC3_FORMAT2_CQ_AVAILABLE	0x8000
+
+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;
+	u16 qdioac3;
+	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_ACTIVATE			0x0001
+#define QDIO_ERROR_GET_BUF_STATE		0x0002
+#define QDIO_ERROR_SET_BUF_STATE		0x0004
+#define QDIO_ERROR_SLSB_STATE			0x0100
+
+#define QDIO_ERROR_FATAL			0x00ff
+#define QDIO_ERROR_TEMPORARY			0xff00
+
+/* for qdio_cleanup */
+#define QDIO_FLAG_CLEANUP_USING_CLEAR		0x01
+#define QDIO_FLAG_CLEANUP_USING_HALT		0x02
+
+/**
+ * struct qdio_initialize - qdio initialization 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
+ * @qib_rflags: rflags to set
+ * @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
+ * @queue_start_poll_array: polling handlers (one per input queue or NULL)
+ * @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
+ * @output_sbal_state_array: no_output_qs * 128 state info (for CQ or NULL)
+ */
+struct qdio_initialize {
+	struct ccw_device *cdev;
+	unsigned char q_format;
+	unsigned char qdr_ac;
+	unsigned char adapter_name[8];
+	unsigned int qib_param_field_format;
+	unsigned char *qib_param_field;
+	unsigned char qib_rflags;
+	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;
+	void (**queue_start_poll_array) (struct ccw_device *, int,
+					  unsigned long);
+	int scan_threshold;
+	unsigned long int_parm;
+	void **input_sbal_addr_array;
+	void **output_sbal_addr_array;
+	struct qdio_outbuf_state *output_sbal_state_array;
+};
+
+/**
+ * enum qdio_brinfo_entry_type - type of address entry for qdio_brinfo_desc()
+ * @l3_ipv6_addr: entry contains IPv6 address
+ * @l3_ipv4_addr: entry contains IPv4 address
+ * @l2_addr_lnid: entry contains MAC address and VLAN ID
+ */
+enum qdio_brinfo_entry_type {l3_ipv6_addr, l3_ipv4_addr, l2_addr_lnid};
+
+/**
+ * struct qdio_brinfo_entry_XXX - Address entry for qdio_brinfo_desc()
+ * @nit:  Network interface token
+ * @addr: Address of one of the three types
+ *
+ * The struct is passed to the callback function by qdio_brinfo_desc()
+ */
+struct qdio_brinfo_entry_l3_ipv6 {
+	u64 nit;
+	struct { unsigned char _s6_addr[16]; } addr;
+} __packed;
+struct qdio_brinfo_entry_l3_ipv4 {
+	u64 nit;
+	struct { uint32_t _s_addr; } addr;
+} __packed;
+struct qdio_brinfo_entry_l2 {
+	u64 nit;
+	struct { u8 mac[6]; u16 lnid; } addr_lnid;
+} __packed;
+
+#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
+
+int qdio_alloc_buffers(struct qdio_buffer **buf, unsigned int count);
+void qdio_free_buffers(struct qdio_buffer **buf, unsigned int count);
+void qdio_reset_buffers(struct qdio_buffer **buf, unsigned int count);
+
+extern int qdio_allocate(struct qdio_initialize *);
+extern int qdio_establish(struct qdio_initialize *);
+extern int qdio_activate(struct ccw_device *);
+extern void qdio_release_aob(struct qaob *);
+extern int do_QDIO(struct ccw_device *, unsigned int, int, unsigned int,
+		   unsigned int);
+extern int qdio_start_irq(struct ccw_device *, int);
+extern int qdio_stop_irq(struct ccw_device *, int);
+extern int qdio_get_next_buffers(struct ccw_device *, int, int *, int *);
+extern int qdio_shutdown(struct ccw_device *, int);
+extern int qdio_free(struct ccw_device *);
+extern int qdio_get_ssqd_desc(struct ccw_device *, struct qdio_ssqd_desc *);
+extern int qdio_pnso_brinfo(struct subchannel_id schid,
+		int cnc, u16 *response,
+		void (*cb)(void *priv, enum qdio_brinfo_entry_type type,
+				void *entry),
+		void *priv);
+
+#endif /* __QDIO_H__ */