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2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd 
 kernel/include/scsi/libsas.h
....@@ -1,26 +1,9 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
12 /*
23  * SAS host prototypes and structures header file
34  *
45  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
56  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
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- *
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- * This file is licensed under GPLv2.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License as
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- * published by the Free Software Foundation; either version 2 of the
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- * License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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- * USA
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- *
247  */
258 
269 #ifndef _LIBSAS_H_
....@@ -52,8 +35,8 @@
5235 };
5336 
5437 enum sas_phy_type {
55
-        PHY_TYPE_PHYSICAL,
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-        PHY_TYPE_VIRTUAL
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+	PHY_TYPE_PHYSICAL,
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+	PHY_TYPE_VIRTUAL
5740 };
5841 
5942 /* The events are mnemonically described in sas_dump.c
....@@ -91,7 +74,7 @@
9174 
9275 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
9376 #define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
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-                                         attr)
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+					 attr)
9578 
9679 enum routing_attribute {
9780 	DIRECT_ROUTING,
....@@ -184,37 +167,37 @@
184167 	spinlock_t done_lock;
185168 	enum sas_device_type dev_type;
186169 
187
-        enum sas_linkrate linkrate;
188
-        enum sas_linkrate min_linkrate;
189
-        enum sas_linkrate max_linkrate;
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+	enum sas_linkrate linkrate;
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+	enum sas_linkrate min_linkrate;
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+	enum sas_linkrate max_linkrate;
190173 
191
-        int  pathways;
174
+	int  pathways;
192175 
193
-        struct domain_device *parent;
194
-        struct list_head siblings; /* devices on the same level */
195
-        struct asd_sas_port *port;        /* shortcut to root of the tree */
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+	struct domain_device *parent;
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+	struct list_head siblings; /* devices on the same level */
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+	struct asd_sas_port *port;        /* shortcut to root of the tree */
196179 	struct sas_phy *phy;
197180 
198
-        struct list_head dev_list_node;
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+	struct list_head dev_list_node;
199182 	struct list_head disco_list_node; /* awaiting probe or destruct */
200183 
201
-        enum sas_protocol    iproto;
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-        enum sas_protocol    tproto;
184
+	enum sas_protocol    iproto;
185
+	enum sas_protocol    tproto;
203186 
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-        struct sas_rphy *rphy;
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+	struct sas_rphy *rphy;
205188 
206
-        u8  sas_addr[SAS_ADDR_SIZE];
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-        u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
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+	u8  sas_addr[SAS_ADDR_SIZE];
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+	u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
208191 
209
-        u8  frame_rcvd[32];
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+	u8  frame_rcvd[32];
210193 
211
-        union {
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-                struct expander_device ex_dev;
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-                struct sata_device     sata_dev; /* STP & directly attached */
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+	union {
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+		struct expander_device ex_dev;
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+		struct sata_device     sata_dev; /* STP & directly attached */
214197 		struct ssp_device      ssp_dev;
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-        };
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+	};
216199 
217
-        void *lldd_dev;
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+	void *lldd_dev;
218201 	unsigned long state;
219202 	struct kref kref;
220203 };
....@@ -223,6 +206,12 @@
223206 	struct list_head drain_node;
224207 	struct work_struct work;
225208 };
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+
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+static inline bool dev_is_expander(enum sas_device_type type)
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+{
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+	return type == SAS_EDGE_EXPANDER_DEVICE ||
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+	       type == SAS_FANOUT_EXPANDER_DEVICE;
214
+}
226215 
227216 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *))
228217 {
....@@ -245,9 +234,9 @@
245234 struct sas_discovery {
246235 	struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
247236 	unsigned long    pending;
248
-	u8     fanout_sas_addr[8];
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-	u8     eeds_a[8];
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-	u8     eeds_b[8];
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+	u8     fanout_sas_addr[SAS_ADDR_SIZE];
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+	u8     eeds_a[SAS_ADDR_SIZE];
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+	u8     eeds_b[SAS_ADDR_SIZE];
251240 	int    max_level;
252241 };
253242 
....@@ -402,10 +391,6 @@
402391 	int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
403392 				* their siblings when forming wide ports */
404393 
405
-	/* LLDD calls these to notify the class of an event. */
406
-	int (*notify_port_event)(struct asd_sas_phy *, enum port_event);
407
-	int (*notify_phy_event)(struct asd_sas_phy *, enum phy_event);
408
-
409394 	void *lldd_ha;		  /* not touched by sas class code */
410395 
411396 	struct list_head eh_done_q;  /* complete via scsi_eh_flush_done_q */
....@@ -489,10 +474,16 @@
489474 };
490475 
491476 enum exec_status {
492
-	/* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of
493
-	 * them here to silence 'case value not in enumerated type' warnings
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+	/*
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+	 * Values 0..0x7f are used to return the SAM_STAT_* codes.  To avoid
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+	 * 'case value not in enumerated type' compiler warnings every value
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+	 * returned through the exec_status enum needs an alias with the SAS_
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+	 * prefix here.
494482 	 */
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-	__SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
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+	SAS_SAM_STAT_GOOD = SAM_STAT_GOOD,
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+	SAS_SAM_STAT_BUSY = SAM_STAT_BUSY,
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+	SAS_SAM_STAT_TASK_ABORTED = SAM_STAT_TASK_ABORTED,
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+	SAS_SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
496487 
497488 	SAS_DEV_NO_RESPONSE = 0x80,
498489 	SAS_DATA_UNDERRUN,
....@@ -512,10 +503,10 @@
512503 
513504 /* When a task finishes with a response, the LLDD examines the
514505  * response:
515
- * 	- For an ATA task task_status_struct::stat is set to
506
+ *	- For an ATA task task_status_struct::stat is set to
516507  * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
517508  * contents of struct ata_task_resp.
518
- * 	- For SSP tasks, if no data is present or status/TMF response
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+ *	- For SSP tasks, if no data is present or status/TMF response
519510  * is valid, task_status_struct::stat is set.  If data is present
520511  * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
521512  * task_status_struct::buf_valid_size, and task_status_struct::stat is
....@@ -671,15 +662,13 @@
671662 extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
672663 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
673664 
674
-int sas_set_phy_speed(struct sas_phy *phy,
675
-		      struct sas_phy_linkrates *rates);
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+int sas_set_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates);
676666 int sas_phy_reset(struct sas_phy *phy, int hard_reset);
677
-extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
667
+extern int sas_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
678668 extern int sas_target_alloc(struct scsi_target *);
679669 extern int sas_slave_configure(struct scsi_device *);
680670 extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
681
-extern int sas_bios_param(struct scsi_device *,
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-			  struct block_device *,
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+extern int sas_bios_param(struct scsi_device *, struct block_device *,
683672 			  sector_t capacity, int *hsc);
684673 extern struct scsi_transport_template *
685674 sas_domain_attach_transport(struct sas_domain_function_template *);
....@@ -709,7 +698,8 @@
709698 
710699 extern void sas_target_destroy(struct scsi_target *);
711700 extern int sas_slave_alloc(struct scsi_device *);
712
-extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
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+extern int sas_ioctl(struct scsi_device *sdev, unsigned int cmd,
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+		     void __user *arg);
713703 extern int sas_drain_work(struct sas_ha_struct *ha);
714704 
715705 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
....@@ -718,4 +708,11 @@
718708 
719709 int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
720710 
711
+int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event);
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+int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event);
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+int sas_notify_port_event_gfp(struct asd_sas_phy *phy, enum port_event event,
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+			      gfp_t gfp_flags);
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+int sas_notify_phy_event_gfp(struct asd_sas_phy *phy, enum phy_event event,
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+			     gfp_t gfp_flags);
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+
721718 #endif /* _SASLIB_H_ */