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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 *
4 * Linux MegaRAID device driver
5 *
6 * Copyright (c) 2003-2004 LSI Logic Corporation.
7 *
8 * FILE : megaraid_ioctl.h
9 *
10 * Definitions to interface with user level applications
11 */
12
13#ifndef _MEGARAID_IOCTL_H_
14#define _MEGARAID_IOCTL_H_
15
16#include <linux/types.h>
17#include <linux/semaphore.h>
18#include <linux/timer.h>
19
20#include "mbox_defs.h"
21
22/*
23 * console messages debug levels
24 */
25#define CL_ANN 0 /* print unconditionally, announcements */
26#define CL_DLEVEL1 1 /* debug level 1, informative */
27#define CL_DLEVEL2 2 /* debug level 2, verbose */
28#define CL_DLEVEL3 3 /* debug level 3, very verbose */
29
30/**
31 * con_log() - console log routine
32 * @level : indicates the severity of the message.
33 * @fmt : format string
34 *
35 * con_log displays the error messages on the console based on the current
36 * debug level. Also it attaches the appropriate kernel severity level with
37 * the message.
38 */
39#define con_log(level, fmt) if (LSI_DBGLVL >= level) printk fmt;
40
41/*
42 * Definitions & Declarations needed to use common management module
43 */
44
45#define MEGAIOC_MAGIC 'm'
46#define MEGAIOCCMD _IOWR(MEGAIOC_MAGIC, 0, mimd_t)
47
48#define MEGAIOC_QNADAP 'm' /* Query # of adapters */
49#define MEGAIOC_QDRVRVER 'e' /* Query driver version */
50#define MEGAIOC_QADAPINFO 'g' /* Query adapter information */
51
52#define USCSICMD 0x80
53#define UIOC_RD 0x00001
54#define UIOC_WR 0x00002
55
56#define MBOX_CMD 0x00000
57#define GET_DRIVER_VER 0x10000
58#define GET_N_ADAP 0x20000
59#define GET_ADAP_INFO 0x30000
60#define GET_CAP 0x40000
61#define GET_STATS 0x50000
62#define GET_IOCTL_VERSION 0x01
63
64#define EXT_IOCTL_SIGN_SZ 16
65#define EXT_IOCTL_SIGN "$$_EXTD_IOCTL_$$"
66
67#define MBOX_LEGACY 0x00 /* ioctl has legacy mbox*/
68#define MBOX_HPE 0x01 /* ioctl has hpe mbox */
69
70#define APPTYPE_MIMD 0x00 /* old existing apps */
71#define APPTYPE_UIOC 0x01 /* new apps using uioc */
72
73#define IOCTL_ISSUE 0x00000001 /* Issue ioctl */
74#define IOCTL_ABORT 0x00000002 /* Abort previous ioctl */
75
76#define DRVRTYPE_MBOX 0x00000001 /* regular mbox driver */
77#define DRVRTYPE_HPE 0x00000002 /* new hpe driver */
78
79#define MKADAP(adapno) (MEGAIOC_MAGIC << 8 | (adapno) )
80#define GETADAP(mkadap) ((mkadap) ^ MEGAIOC_MAGIC << 8)
81
82#define MAX_DMA_POOLS 5 /* 4k, 8k, 16k, 32k, 64k*/
83
84
85/**
86 * struct uioc_t - the common ioctl packet structure
87 *
88 * @signature : Must be "$$_EXTD_IOCTL_$$"
89 * @mb_type : Type of the mail box (MB_LEGACY or MB_HPE)
90 * @app_type : Type of the issuing application (existing or new)
91 * @opcode : Opcode of the command
92 * @adapno : Adapter number
93 * @cmdbuf : Pointer to buffer - can point to mbox or plain data buffer
94 * @xferlen : xferlen for DCMD and non mailbox commands
95 * @data_dir : Direction of the data transfer
96 * @status : Status from the driver
97 * @reserved : reserved bytes for future expansion
98 *
99 * @user_data : user data transfer address is saved in this
100 * @user_data_len: length of the data buffer sent by user app
101 * @user_pthru : user passthru address is saves in this (null if DCMD)
102 * @pthru32 : kernel address passthru (allocated per kioc)
103 * @pthru32_h : physicall address of @pthru32
104 * @list : for kioc free pool list maintenance
105 * @done : call back routine for llds to call when kioc is completed
106 * @buf_vaddr : dma pool buffer attached to kioc for data transfer
107 * @buf_paddr : physical address of the dma pool buffer
108 * @pool_index : index of the dma pool that @buf_vaddr is taken from
109 * @free_buf : indicates if buffer needs to be freed after kioc completes
110 *
111 * Note : All LSI drivers understand only this packet. Any other
112 * : format sent by applications would be converted to this.
113 */
114typedef struct uioc {
115
116/* User Apps: */
117
118 uint8_t signature[EXT_IOCTL_SIGN_SZ];
119 uint16_t mb_type;
120 uint16_t app_type;
121 uint32_t opcode;
122 uint32_t adapno;
123 uint64_t cmdbuf;
124 uint32_t xferlen;
125 uint32_t data_dir;
126 int32_t status;
127 uint8_t reserved[128];
128
129/* Driver Data: */
130 void __user * user_data;
131 uint32_t user_data_len;
132
133 /* 64bit alignment */
134 uint32_t pad_for_64bit_align;
135
136 mraid_passthru_t __user *user_pthru;
137
138 mraid_passthru_t *pthru32;
139 dma_addr_t pthru32_h;
140
141 struct list_head list;
142 void (*done)(struct uioc*);
143
144 caddr_t buf_vaddr;
145 dma_addr_t buf_paddr;
146 int8_t pool_index;
147 uint8_t free_buf;
148
149 uint8_t timedout;
150
151} __attribute__ ((aligned(1024),packed)) uioc_t;
152
153/* For on-stack uioc timers. */
154struct uioc_timeout {
155 struct timer_list timer;
156 uioc_t *uioc;
157};
158
159/**
160 * struct mraid_hba_info - information about the controller
161 *
162 * @pci_vendor_id : PCI vendor id
163 * @pci_device_id : PCI device id
164 * @subsystem_vendor_id : PCI subsystem vendor id
165 * @subsystem_device_id : PCI subsystem device id
166 * @baseport : base port of hba memory
167 * @pci_bus : PCI bus
168 * @pci_dev_fn : PCI device/function values
169 * @irq : interrupt vector for the device
170 *
171 * Extended information of 256 bytes about the controller. Align on the single
172 * byte boundary so that 32-bit applications can be run on 64-bit platform
173 * drivers withoug re-compilation.
174 * NOTE: reduce the number of reserved bytes whenever new field are added, so
175 * that total size of the structure remains 256 bytes.
176 */
177typedef struct mraid_hba_info {
178
179 uint16_t pci_vendor_id;
180 uint16_t pci_device_id;
181 uint16_t subsys_vendor_id;
182 uint16_t subsys_device_id;
183
184 uint64_t baseport;
185 uint8_t pci_bus;
186 uint8_t pci_dev_fn;
187 uint8_t pci_slot;
188 uint8_t irq;
189
190 uint32_t unique_id;
191 uint32_t host_no;
192
193 uint8_t num_ldrv;
194} __attribute__ ((aligned(256), packed)) mraid_hba_info_t;
195
196
197/**
198 * mcontroller : adapter info structure for old mimd_t apps
199 *
200 * @base : base address
201 * @irq : irq number
202 * @numldrv : number of logical drives
203 * @pcibus : pci bus
204 * @pcidev : pci device
205 * @pcifun : pci function
206 * @pciid : pci id
207 * @pcivendor : vendor id
208 * @pcislot : slot number
209 * @uid : unique id
210 */
211typedef struct mcontroller {
212
213 uint64_t base;
214 uint8_t irq;
215 uint8_t numldrv;
216 uint8_t pcibus;
217 uint16_t pcidev;
218 uint8_t pcifun;
219 uint16_t pciid;
220 uint16_t pcivendor;
221 uint8_t pcislot;
222 uint32_t uid;
223
224} __attribute__ ((packed)) mcontroller_t;
225
226
227/**
228 * mm_dmapool_t : Represents one dma pool with just one buffer
229 *
230 * @vaddr : Virtual address
231 * @paddr : DMA physicall address
232 * @bufsize : In KB - 4 = 4k, 8 = 8k etc.
233 * @handle : Handle to the dma pool
234 * @lock : lock to synchronize access to the pool
235 * @in_use : If pool already in use, attach new block
236 */
237typedef struct mm_dmapool {
238 caddr_t vaddr;
239 dma_addr_t paddr;
240 uint32_t buf_size;
241 struct dma_pool *handle;
242 spinlock_t lock;
243 uint8_t in_use;
244} mm_dmapool_t;
245
246
247/**
248 * mraid_mmadp_t: Structure that drivers pass during (un)registration
249 *
250 * @unique_id : Any unique id (usually PCI bus+dev+fn)
251 * @drvr_type : megaraid or hpe (DRVRTYPE_MBOX or DRVRTYPE_HPE)
252 * @drv_data : Driver specific; not touched by the common module
253 * @timeout : timeout for issued kiocs
254 * @max_kioc : Maximum ioctl packets acceptable by the lld
255 * @pdev : pci dev; used for allocating dma'ble memory
256 * @issue_uioc : Driver supplied routine to issue uioc_t commands
257 * : issue_uioc(drvr_data, kioc, ISSUE/ABORT, uioc_done)
258 * @quiescent : flag to indicate if ioctl can be issued to this adp
259 * @list : attach with the global list of adapters
260 * @kioc_list : block of mem for @max_kioc number of kiocs
261 * @kioc_pool : pool of free kiocs
262 * @kioc_pool_lock : protection for free pool
263 * @kioc_semaphore : so as not to exceed @max_kioc parallel ioctls
264 * @mbox_list : block of mem for @max_kioc number of mboxes
265 * @pthru_dma_pool : DMA pool to allocate passthru packets
266 * @dma_pool_list : array of dma pools
267 */
268
269typedef struct mraid_mmadp {
270
271/* Filled by driver */
272
273 uint32_t unique_id;
274 uint32_t drvr_type;
275 unsigned long drvr_data;
276 uint16_t timeout;
277 uint8_t max_kioc;
278
279 struct pci_dev *pdev;
280
281 int(*issue_uioc)(unsigned long, uioc_t *, uint32_t);
282
283/* Maintained by common module */
284 uint32_t quiescent;
285
286 struct list_head list;
287 uioc_t *kioc_list;
288 struct list_head kioc_pool;
289 spinlock_t kioc_pool_lock;
290 struct semaphore kioc_semaphore;
291
292 mbox64_t *mbox_list;
293 struct dma_pool *pthru_dma_pool;
294 mm_dmapool_t dma_pool_list[MAX_DMA_POOLS];
295
296} mraid_mmadp_t;
297
298int mraid_mm_register_adp(mraid_mmadp_t *);
299int mraid_mm_unregister_adp(uint32_t);
300uint32_t mraid_mm_adapter_app_handle(uint32_t);
301
302#endif /* _MEGARAID_IOCTL_H_ */