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2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d 
 kernel/drivers/block/mtip32xx/mtip32xx.h
....@@ -1,3 +1,4 @@
1
+/* SPDX-License-Identifier: GPL-2.0-or-later */
12 /*
23  * mtip32xx.h - Header file for the P320 SSD Block Driver
34  *   Copyright (C) 2011 Micron Technology, Inc.
....@@ -5,17 +6,6 @@
56  * Portions of this code were derived from works subjected to the
67  * following copyright:
78  *    Copyright (C) 2009 Integrated Device Technology, Inc.
8
- *
9
- * This program is free software; you can redistribute it and/or modify
10
- * it under the terms of the GNU General Public License as published by
11
- * the Free Software Foundation; either version 2 of the License, or
12
- * (at your option) any later version.
13
- *
14
- * This program is distributed in the hope that it will be useful,
15
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
16
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17
- * GNU General Public License for more details.
18
- *
199  */
2010 
2111 #ifndef __MTIP32XX_H__
....@@ -126,8 +116,6 @@
126116 
127117 #define MTIP_DFS_MAX_BUF_SIZE 1024
128118 
129
-#define __force_bit2int (unsigned int __force)
130
-
131119 enum {
132120 	/* below are bit numbers in 'flags' defined in mtip_port */
133121 	MTIP_PF_IC_ACTIVE_BIT       = 0, /* pio/ioctl */
....@@ -174,10 +162,10 @@
174162 
175163 struct smart_attr {
176164 	u8 attr_id;
177
-	u16 flags;
165
+	__le16 flags;
178166 	u8 cur;
179167 	u8 worst;
180
-	u32 data;
168
+	__le32 data;
181169 	u8 res[3];
182170 } __packed;
183171 
....@@ -194,21 +182,6 @@
194182 		struct mtip_work *w = (struct mtip_work *) work;         \
195183 		mtip_workq_sdbfx(w->port, group, w->completed);     \
196184 	}
197
-
198
-#define MTIP_TRIM_TIMEOUT_MS		240000
199
-#define MTIP_MAX_TRIM_ENTRIES		8
200
-#define MTIP_MAX_TRIM_ENTRY_LEN		0xfff8
201
-
202
-struct mtip_trim_entry {
203
-	u32 lba;   /* starting lba of region */
204
-	u16 rsvd;  /* unused */
205
-	u16 range; /* # of 512b blocks to trim */
206
-} __packed;
207
-
208
-struct mtip_trim {
209
-	/* Array of regions to trim */
210
-	struct mtip_trim_entry entry[MTIP_MAX_TRIM_ENTRIES];
211
-} __packed;
212185 
213186 /* Register Frame Information Structure (FIS), host to device. */
214187 struct host_to_dev_fis {
....@@ -278,24 +251,24 @@
278251 	 * - Bit 5 Unused in this implementation.
279252 	 * - Bits 4:0 Length of the command FIS in DWords (DWord = 4 bytes).
280253 	 */
281
-	unsigned int opts;
254
+	__le32 opts;
282255 	/* This field is unsed when using NCQ. */
283256 	union {
284
-		unsigned int byte_count;
285
-		unsigned int status;
257
+		__le32 byte_count;
258
+		__le32 status;
286259 	};
287260 	/*
288261 	 * Lower 32 bits of the command table address associated with this
289262 	 * header. The command table addresses must be 128 byte aligned.
290263 	 */
291
-	unsigned int ctba;
264
+	__le32 ctba;
292265 	/*
293266 	 * If 64 bit addressing is used this field is the upper 32 bits
294267 	 * of the command table address associated with this command.
295268 	 */
296
-	unsigned int ctbau;
269
+	__le32 ctbau;
297270 	/* Reserved and unused. */
298
-	unsigned int res[4];
271
+	u32 res[4];
299272 };
300273 
301274 /* Command scatter gather structure (PRD). */
....@@ -305,31 +278,28 @@
305278 	 * address must be 8 byte aligned signified by bits 2:0 being
306279 	 * set to 0.
307280 	 */
308
-	unsigned int dba;
281
+	__le32 dba;
309282 	/*
310283 	 * When 64 bit addressing is used this field is the upper
311284 	 * 32 bits of the data buffer address.
312285 	 */
313
-	unsigned int dba_upper;
286
+	__le32 dba_upper;
314287 	/* Unused. */
315
-	unsigned int reserved;
288
+	__le32 reserved;
316289 	/*
317290 	 * Bit 31: interrupt when this data block has been transferred.
318291 	 * Bits 30..22: reserved
319292 	 * Bits 21..0: byte count (minus 1).  For P320 the byte count must be
320293 	 * 8 byte aligned signified by bits 2:0 being set to 1.
321294 	 */
322
-	unsigned int info;
295
+	__le32 info;
323296 };
324297 struct mtip_port;
325298 
299
+struct mtip_int_cmd;
300
+
326301 /* Structure used to describe a command. */
327302 struct mtip_cmd {
328
-
329
-	struct mtip_cmd_hdr *command_header; /* ptr to command header entry */
330
-
331
-	dma_addr_t command_header_dma; /* corresponding physical address */
332
-
333303 	void *command; /* ptr to command table entry */
334304 
335305 	dma_addr_t command_dma; /* corresponding physical address */
....@@ -338,7 +308,10 @@
338308 
339309 	int unaligned; /* command is unaligned on 4k boundary */
340310 
341
-	struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */
311
+	union {
312
+		struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */
313
+		struct mtip_int_cmd *icmd;
314
+	};
342315 
343316 	int retries; /* The number of retries left for this command. */
344317 
....@@ -435,8 +408,8 @@
435408 	 */
436409 	unsigned long ic_pause_timer;
437410 
438
-	/* Semaphore to control queue depth of unaligned IOs */
439
-	struct semaphore cmd_slot_unal;
411
+	/* Counter to control queue depth of unaligned IOs */
412
+	atomic_t cmd_slot_unal;
440413 
441414 	/* Spinlock for working around command-issue bug. */
442415 	spinlock_t cmd_issue_lock[MTIP_MAX_SLOT_GROUPS];
....@@ -475,8 +448,6 @@
475448 	struct task_struct *mtip_svc_handler; /* task_struct of svc thd */
476449 
477450 	struct dentry *dfs_node;
478
-
479
-	bool trim_supp; /* flag indicating trim support */
480451 
481452 	bool sr;
482453