change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/s390/cio/qdio.h
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@@ -15,7 +15,6 @@
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 #define QDIO_BUSY_BIT_PATIENCE		(100 << 12)	/* 100 microseconds */
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 #define QDIO_BUSY_BIT_RETRY_DELAY	10		/* 10 milliseconds */
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 #define QDIO_BUSY_BIT_RETRIES		1000		/* = 10s retry time */
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-#define QDIO_INPUT_THRESHOLD		(500 << 12)	/* 500 microseconds */
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 enum qdio_irq_states {
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 	QDIO_IRQ_STATE_INACTIVE,
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@@ -82,21 +81,22 @@
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 #define QDIO_SIGA_WRITE		0x00
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 #define QDIO_SIGA_READ		0x01
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 #define QDIO_SIGA_SYNC		0x02
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+#define QDIO_SIGA_WRITEM	0x03
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 #define QDIO_SIGA_WRITEQ	0x04
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 #define QDIO_SIGA_QEBSM_FLAG	0x80
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 static inline int do_sqbs(u64 token, unsigned char state, int queue,
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 			  int *start, int *count)
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 {
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-	register unsigned long _ccq asm ("0") = *count;
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-	register unsigned long _token asm ("1") = token;
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 	unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
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+	unsigned long _ccq = *count;
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 	asm volatile(
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-		"	.insn	rsy,0xeb000000008A,%1,0,0(%2)"
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-		: "+d" (_ccq), "+d" (_queuestart)
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-		: "d" ((unsigned long)state), "d" (_token)
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-		: "memory", "cc");
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+		"	lgr	1,%[token]\n"
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+		"	.insn	rsy,0xeb000000008a,%[qs],%[ccq],0(%[state])"
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+		: [ccq] "+&d" (_ccq), [qs] "+&d" (_queuestart)
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+		: [state] "a" ((unsigned long)state), [token] "d" (token)
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+		: "memory", "cc", "1");
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 	*count = _ccq & 0xff;
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 	*start = _queuestart & 0xff;
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@@ -106,16 +106,17 @@
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 static inline int do_eqbs(u64 token, unsigned char *state, int queue,
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 			  int *start, int *count, int ack)
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 {
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-	register unsigned long _ccq asm ("0") = *count;
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-	register unsigned long _token asm ("1") = token;
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 	unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
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 	unsigned long _state = (unsigned long)ack << 63;
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+	unsigned long _ccq = *count;
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 	asm volatile(
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-		"	.insn	rrf,0xB99c0000,%1,%2,0,0"
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-		: "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
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-		: "d" (_token)
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-		: "memory", "cc");
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+		"	lgr	1,%[token]\n"
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+		"	.insn	rrf,0xb99c0000,%[qs],%[state],%[ccq],0"
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+		: [ccq] "+&d" (_ccq), [qs] "+&d" (_queuestart),
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+		  [state] "+&d" (_state)
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+		: [token] "d" (token)
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+		: "memory", "cc", "1");
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 	*count = _ccq & 0xff;
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 	*start = _queuestart & 0xff;
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 	*state = _state & 0xff;
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@@ -165,34 +166,21 @@
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 } ____cacheline_aligned;
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 struct qdio_queue_perf_stat {
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-	/*
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-	 * Sorted into order-2 buckets: 1, 2-3, 4-7, ... 64-127, 128.
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-	 * Since max. 127 SBALs are scanned reuse entry for 128 as queue full
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-	 * aka 127 SBALs found.
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-	 */
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+	/* Sorted into order-2 buckets: 1, 2-3, 4-7, ... 64-127, 128. */
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 	unsigned int nr_sbals[8];
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 	unsigned int nr_sbal_error;
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 	unsigned int nr_sbal_nop;
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 	unsigned int nr_sbal_total;
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 };
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-enum qdio_queue_irq_states {
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-	QDIO_QUEUE_IRQS_DISABLED,
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+enum qdio_irq_poll_states {
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+	QDIO_IRQ_DISABLED,
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 };
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 struct qdio_input_q {
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-	/* input buffer acknowledgement flag */
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-	int polling;
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-	/* first ACK'ed buffer */
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-	int ack_start;
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-	/* how much sbals are acknowledged with qebsm */
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-	int ack_count;
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-	/* last time of noticing incoming data */
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-	u64 timestamp;
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-	/* upper-layer polling flag */
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-	unsigned long queue_irq_state;
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-	/* callback to start upper-layer polling */
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-	void (*queue_start_poll) (struct ccw_device *, int, unsigned long);
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+	/* Batch of SBALs that we processed while polling the queue: */
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+	unsigned int batch_start;
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+	unsigned int batch_count;
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 };
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 struct qdio_output_q {
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@@ -206,8 +194,6 @@
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 	struct qdio_outbuf_state *sbal_state;
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 	/* timer to check for more outbound work */
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 	struct timer_list timer;
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-	/* used SBALs before tasklet schedule */
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-	int scan_threshold;
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 };
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 /*
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@@ -227,12 +213,6 @@
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 	 * outbound: next buffer to check if adapter processed it
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 	 */
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 	int first_to_check;
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-
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-	/* first_to_check of the last time */
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-	int last_move;
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-
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-	/* beginning position for calling the program */
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-	int first_to_kick;
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 	/* number of buffers in use by the adapter */
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 	atomic_t nr_buf_used;
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@@ -257,13 +237,9 @@
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 	/* input or output queue */
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 	int is_input_q;
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-	/* list of thinint input queues */
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-	struct list_head entry;
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-
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 	/* upper-layer program handler */
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 	qdio_handler_t (*handler);
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-	struct dentry *debugfs_q;
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 	struct qdio_irq *irq_ptr;
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 	struct sl *sl;
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 	/*
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@@ -277,8 +253,8 @@
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 	struct qib qib;
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 	u32 *dsci;		/* address of device state change indicator */
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 	struct ccw_device *cdev;
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+	struct list_head entry;		/* list of thinint devices */
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 	struct dentry *debugfs_dev;
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-	struct dentry *debugfs_perf;
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 	unsigned long int_parm;
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 	struct subchannel_id schid;
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@@ -298,6 +274,7 @@
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 	struct qdio_ssqd_desc ssqd_desc;
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 	void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *);
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+	unsigned int scan_threshold;	/* used SBALs before tasklet schedule */
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 	int perf_stat_enabled;
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 	struct qdr *qdr;
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@@ -305,6 +282,11 @@
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 	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
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 	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
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+	unsigned int max_input_qs;
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+	unsigned int max_output_qs;
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+
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+	void (*irq_poll)(struct ccw_device *cdev, unsigned long data);
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+	unsigned long poll_state;
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 	debug_info_t *debug_area;
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 	struct mutex setup_mutex;
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@@ -321,12 +303,14 @@
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 #define qperf(__qdev, __attr)	((__qdev)->perf_stat.(__attr))
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-#define qperf_inc(__q, __attr)						\
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+#define QDIO_PERF_STAT_INC(__irq, __attr)				\
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 ({									\
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-	struct qdio_irq *qdev = (__q)->irq_ptr;				\
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+	struct qdio_irq *qdev = __irq;					\
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 	if (qdev->perf_stat_enabled)					\
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 		(qdev->perf_stat.__attr)++;				\
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 })
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+
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+#define qperf_inc(__q, __attr)	QDIO_PERF_STAT_INC((__q)->irq_ptr, __attr)
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 static inline void account_sbals_error(struct qdio_q *q, int count)
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 {
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@@ -341,8 +325,7 @@
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 	       (q->nr == q->irq_ptr->nr_output_qs - 1);
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 }
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-#define pci_out_supported(q) \
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-	(q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
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+#define pci_out_supported(irq) ((irq)->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
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 #define is_qebsm(q)			(q->irq_ptr->sch_token != 0)
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 #define need_siga_in(q)			(q->irq_ptr->siga_flag.input)
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@@ -360,14 +343,10 @@
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 	for (i = 0; i < irq_ptr->nr_output_qs &&	\
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 		({ q = irq_ptr->output_qs[i]; 1; }); i++)
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-#define prev_buf(bufnr)	\
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-	((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)
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-#define next_buf(bufnr)	\
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-	((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)
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-#define add_buf(bufnr, inc) \
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-	((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)
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-#define sub_buf(bufnr, dec) \
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-	((bufnr - dec) & QDIO_MAX_BUFFERS_MASK)
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+#define add_buf(bufnr, inc)	QDIO_BUFNR((bufnr) + (inc))
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+#define next_buf(bufnr)		add_buf(bufnr, 1)
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+#define sub_buf(bufnr, dec)	QDIO_BUFNR((bufnr) - (dec))
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+#define prev_buf(bufnr)		sub_buf(bufnr, 1)
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 #define queue_irqs_enabled(q)			\
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 	(test_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state) == 0)
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@@ -379,14 +358,11 @@
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 /* prototypes for thin interrupt */
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 int qdio_establish_thinint(struct qdio_irq *irq_ptr);
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 void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
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-void tiqdio_add_input_queues(struct qdio_irq *irq_ptr);
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-void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr);
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+void tiqdio_add_device(struct qdio_irq *irq_ptr);
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+void tiqdio_remove_device(struct qdio_irq *irq_ptr);
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 void tiqdio_inbound_processing(unsigned long q);
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-int tiqdio_allocate_memory(void);
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-void tiqdio_free_memory(void);
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-int tiqdio_register_thinints(void);
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-void tiqdio_unregister_thinints(void);
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-void clear_nonshared_ind(struct qdio_irq *);
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+int qdio_thinint_init(void);
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+void qdio_thinint_exit(void);
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 int test_nonshared_ind(struct qdio_irq *);
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 /* prototypes for setup */
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@@ -401,12 +377,11 @@
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 int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
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 			struct subchannel_id *schid,
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 			struct qdio_ssqd_desc *data);
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-int qdio_setup_irq(struct qdio_initialize *init_data);
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-void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
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-				struct ccw_device *cdev);
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-void qdio_release_memory(struct qdio_irq *irq_ptr);
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-int qdio_setup_create_sysfs(struct ccw_device *cdev);
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-void qdio_setup_destroy_sysfs(struct ccw_device *cdev);
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+int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data);
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+void qdio_shutdown_irq(struct qdio_irq *irq);
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+void qdio_print_subchannel_info(struct qdio_irq *irq_ptr);
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+void qdio_free_queues(struct qdio_irq *irq_ptr);
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+void qdio_free_async_data(struct qdio_irq *irq_ptr);
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 int qdio_setup_init(void);
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 void qdio_setup_exit(void);
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 int qdio_enable_async_operation(struct qdio_output_q *q);