1 Release Date : Thu Nov 16 15:32:35 EST 2006 1 Release Date : Thu Nov 16 15:32:35 EST 2006 -
2 Sumant Patro <s 2 Sumant Patro <sumant.patro@lsi.com>
3 Current Version : 2.20.5.1 (scsi module), 2.20 3 Current Version : 2.20.5.1 (scsi module), 2.20.2.6 (cmm module)
4 Older Version : 2.20.4.9 (scsi module), 2.20 4 Older Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
5 5
6 1. Changes in Initialization to fix kdump 6 1. Changes in Initialization to fix kdump failure.
7 Send SYNC command on loading. 7 Send SYNC command on loading.
8 This command clears the pending comman 8 This command clears the pending commands in the adapter
9 and re-initialize its internal RAID st 9 and re-initialize its internal RAID structure.
10 Without this change, megaraid driver e 10 Without this change, megaraid driver either panics or fails to
11 initialize the adapter during kdump's 11 initialize the adapter during kdump's second kernel boot
12 if there are pending commands or inter 12 if there are pending commands or interrupts from other devices
13 sharing the same IRQ. 13 sharing the same IRQ.
14 2. Authors email-id domain name changed f 14 2. Authors email-id domain name changed from lsil.com to lsi.com.
15 Also modified the MODULE_AUTHOR to meg 15 Also modified the MODULE_AUTHOR to megaraidlinux@lsi.com
16 16
17 Release Date : Fri May 19 09:31:45 EST 2006< 17 Release Date : Fri May 19 09:31:45 EST 2006 - Seokmann Ju <sju@lsil.com>
18 Current Version : 2.20.4.9 (scsi module), 2.20 18 Current Version : 2.20.4.9 (scsi module), 2.20.2.6 (cmm module)
19 Older Version : 2.20.4.8 (scsi module), 2.20 19 Older Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
20 20
21 1. Fixed a bug in megaraid_init_mbox(). 21 1. Fixed a bug in megaraid_init_mbox().
22 Customer reported "garbage in file on 22 Customer reported "garbage in file on x86_64 platform".
23 Root Cause: the driver registered cont 23 Root Cause: the driver registered controllers as 64-bit DMA capable
24 for those which are not support it. 24 for those which are not support it.
25 Fix: Made change in the function inser 25 Fix: Made change in the function inserting identification mechanism
26 identifying 64-bit DMA capable control 26 identifying 64-bit DMA capable controllers.
27 27
28 > -----Original Message----- 28 > -----Original Message-----
29 > From: Vasily Averin [mailto:vvs@sw.r 29 > From: Vasily Averin [mailto:vvs@sw.ru]
30 > Sent: Thursday, May 04, 2006 2:49 PM 30 > Sent: Thursday, May 04, 2006 2:49 PM
31 > To: linux-scsi@vger.kernel.org; Koll 31 > To: linux-scsi@vger.kernel.org; Kolli, Neela; Mukker, Atul;
32 > Ju, Seokmann; Bagalkote, Sreenivas; 32 > Ju, Seokmann; Bagalkote, Sreenivas;
33 > James.Bottomley@SteelEye.com; devel@ 33 > James.Bottomley@SteelEye.com; devel@openvz.org
34 > Subject: megaraid_mbox: garbage in f 34 > Subject: megaraid_mbox: garbage in file
35 > 35 >
36 > Hello all, 36 > Hello all,
37 > 37 >
38 > I've investigated customers claim on 38 > I've investigated customers claim on the unstable work of
39 > their node and found a 39 > their node and found a
40 > strange effect: reading from some fi 40 > strange effect: reading from some files leads to the
41 > "attempt to access beyond end of de 41 > "attempt to access beyond end of device" messages.
42 > 42 >
43 > I've checked filesystem, memory on t 43 > I've checked filesystem, memory on the node, motherboard BIOS
44 > version, but it 44 > version, but it
45 > does not help and issue still has be 45 > does not help and issue still has been reproduced by simple
46 > file reading. 46 > file reading.
47 > 47 >
48 > Reproducer is simple: 48 > Reproducer is simple:
49 > 49 >
50 > echo 0xffffffff >/proc/sys/dev/scsi/ 50 > echo 0xffffffff >/proc/sys/dev/scsi/logging_level ;
51 > cat /vz/private/101/root/etc/ld.so.c 51 > cat /vz/private/101/root/etc/ld.so.cache >/tmp/ttt ;
52 > echo 0 >/proc/sys/dev/scsi/logging 52 > echo 0 >/proc/sys/dev/scsi/logging
53 > 53 >
54 > It leads to the following messages i 54 > It leads to the following messages in dmesg
55 > 55 >
56 > sd_init_command: disk=sda, block=871 56 > sd_init_command: disk=sda, block=871769260, count=26
57 > sda : block=871769260 57 > sda : block=871769260
58 > sda : reading 26/26 512 byte blocks. 58 > sda : reading 26/26 512 byte blocks.
59 > scsi_add_timer: scmd: f79ed980, time 59 > scsi_add_timer: scmd: f79ed980, time: 7500, (c02b1420)
60 > sd 0:1:0:0: send 0xf79ed980 60 > sd 0:1:0:0: send 0xf79ed980 sd 0:1:0:0:
61 > command: Read (10): 28 00 33 61 > command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
62 > buffer = 0xf7cfb540, bufflen = 13312 62 > buffer = 0xf7cfb540, bufflen = 13312, done = 0xc0366b40,
63 > queuecommand 0xc0344010 63 > queuecommand 0xc0344010
64 > leaving scsi_dispatch_cmnd() 64 > leaving scsi_dispatch_cmnd()
65 > scsi_delete_timer: scmd: f79ed980, r 65 > scsi_delete_timer: scmd: f79ed980, rtn: 1
66 > sd 0:1:0:0: done 0xf79ed980 SUCCESS 66 > sd 0:1:0:0: done 0xf79ed980 SUCCESS 0 sd 0:1:0:0:
67 > command: Read (10): 28 00 33 67 > command: Read (10): 28 00 33 f6 24 ac 00 00 1a 00
68 > scsi host busy 1 failed 0 68 > scsi host busy 1 failed 0
69 > sd 0:1:0:0: Notifying upper driver o 69 > sd 0:1:0:0: Notifying upper driver of completion (result 0)
70 > sd_rw_intr: sda: res=0x0 70 > sd_rw_intr: sda: res=0x0
71 > 26 sectors total, 13312 bytes done. 71 > 26 sectors total, 13312 bytes done.
72 > use_sg is 4 72 > use_sg is 4
73 > attempt to access beyond end of devi 73 > attempt to access beyond end of device
74 > sda6: rw=0, want=1044134458, limit=9 74 > sda6: rw=0, want=1044134458, limit=951401367
75 > Buffer I/O error on device sda6, log 75 > Buffer I/O error on device sda6, logical block 522067228
76 > attempt to access beyond end of devi 76 > attempt to access beyond end of device
77 77
78 2. When INQUIRY with EVPD bit set issued 78 2. When INQUIRY with EVPD bit set issued to the MegaRAID controller,
79 system memory gets corrupted. 79 system memory gets corrupted.
80 Root Cause: MegaRAID F/W handle the IN 80 Root Cause: MegaRAID F/W handle the INQUIRY with EVPD bit set
81 incorrectly. 81 incorrectly.
82 Fix: MegaRAID F/W has fixed the proble 82 Fix: MegaRAID F/W has fixed the problem and being process of release,
83 soon. Meanwhile, driver will filter ou 83 soon. Meanwhile, driver will filter out the request.
84 84
85 3. One member in the data structure of th 85 3. One member in the data structure of the driver leads to unaligned
86 issue on 64-bit platform. 86 issue on 64-bit platform.
87 Customer reported "kernel unaligned ac 87 Customer reported "kernel unaligned access address" issue when
88 application communicates with MegaRAID 88 application communicates with MegaRAID HBA driver.
89 Root Cause: in uioc_t structure, one o 89 Root Cause: in uioc_t structure, one of member had misaligned and it
90 led system to display the error messag 90 led system to display the error message.
91 Fix: A patch submitted to community fr 91 Fix: A patch submitted to community from following folk.
92 92
93 > -----Original Message----- 93 > -----Original Message-----
94 > From: linux-scsi-owner@vger.kernel.o 94 > From: linux-scsi-owner@vger.kernel.org
95 > [mailto:linux-scsi-owner@vger.kernel 95 > [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi
96 > Sent: Wednesday, July 12, 2006 4:20 96 > Sent: Wednesday, July 12, 2006 4:20 AM
97 > To: linux-scsi@vger.kernel.org; linu 97 > To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
98 > Subject: Re: Help: strange messages 98 > Subject: Re: Help: strange messages from kernel on IA64 platform
99 > 99 >
100 > Hi, 100 > Hi,
101 > 101 >
102 > I saw same message. 102 > I saw same message.
103 > 103 >
104 > When GAM(Global Array Manager) is st 104 > When GAM(Global Array Manager) is started, The following
105 > message output. 105 > message output.
106 > kernel: kernel unaligned access to 0 106 > kernel: kernel unaligned access to 0xe0000001fe1080d4,
107 > ip=0xa000000200053371 107 > ip=0xa000000200053371
108 > 108 >
109 > The uioc structure used by ioctl is 109 > The uioc structure used by ioctl is defined by packed,
110 > the allignment of each member are di 110 > the allignment of each member are disturbed.
111 > In a 64 bit structure, the allignmen 111 > In a 64 bit structure, the allignment of member doesn't fit 64 bit
112 > boundary. this causes this messages. 112 > boundary. this causes this messages.
113 > In a 32 bit structure, we don't see 113 > In a 32 bit structure, we don't see the message because the allinment
114 > of member fit 32 bit boundary even i 114 > of member fit 32 bit boundary even if packed is specified.
115 > 115 >
116 > patch 116 > patch
117 > I Add 32 bit dummy member to fit 64 117 > I Add 32 bit dummy member to fit 64 bit boundary. I tested.
118 > We confirmed this patch fix the prob 118 > We confirmed this patch fix the problem by IA64 server.
119 > 119 >
120 > ************************************ 120 > **************************************************************
121 > **************** 121 > ****************
122 > --- linux-2.6.9/drivers/scsi/megarai 122 > --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig
123 > 2006-04-03 17:13:03.000000000 +0900 123 > 2006-04-03 17:13:03.000000000 +0900
124 > +++ linux-2.6.9/drivers/scsi/megarai 124 > +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h
125 > 2006-04-03 17:14:09.000000000 +0900 125 > 2006-04-03 17:14:09.000000000 +0900
126 > @@ -132,6 +132,10 @@ 126 > @@ -132,6 +132,10 @@
127 > /* Driver Data: */ 127 > /* Driver Data: */
128 > void __user * use 128 > void __user * user_data;
129 > uint32_t use 129 > uint32_t user_data_len;
130 > + 130 > +
131 > + /* 64bit alignment */ 131 > + /* 64bit alignment */
132 > + uint32_t pad 132 > + uint32_t pad_0xBC;
133 > + 133 > +
134 > mraid_passthru_t __u 134 > mraid_passthru_t __user *user_pthru;
135 > 135 >
136 > mraid_passthru_t *pt 136 > mraid_passthru_t *pthru32;
137 > ************************************ 137 > **************************************************************
138 > **************** 138 > ****************
139 139
140 Release Date : Mon Apr 11 12:27:22 EST 2006< 140 Release Date : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com>
141 Current Version : 2.20.4.8 (scsi module), 2.20 141 Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module)
142 Older Version : 2.20.4.7 (scsi module), 2.20 142 Older Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
143 143
144 1. Fixed a bug in megaraid_reset_handler( 144 1. Fixed a bug in megaraid_reset_handler().
145 Customer reported "Unable to handle ke 145 Customer reported "Unable to handle kernel NULL pointer dereference
146 at virtual address 00000000" when syst 146 at virtual address 00000000" when system goes to reset condition
147 for some reason. It happened randomly. 147 for some reason. It happened randomly.
148 Root Cause: in the megaraid_reset_hand 148 Root Cause: in the megaraid_reset_handler(), there is possibility not
149 returning pending packets in the pend_ 149 returning pending packets in the pend_list if there are multiple
150 pending packets. 150 pending packets.
151 Fix: Made the change in the driver so 151 Fix: Made the change in the driver so that it will return all packets
152 in the pend_list. 152 in the pend_list.
153 153
154 2. Added change request. 154 2. Added change request.
155 As found in the following URL, rmb() o 155 As found in the following URL, rmb() only didn't help the
156 problem. I had to increase the loop co 156 problem. I had to increase the loop counter to 0xFFFFFF. (6 F's)
157 http://marc.theaimsgroup.com/?l=linux- 157 http://marc.theaimsgroup.com/?l=linux-scsi&m=110971060502497&w=2
158 158
159 I attached a patch for your reference, 159 I attached a patch for your reference, too.
160 Could you check and get this fix in yo 160 Could you check and get this fix in your driver?
161 161
162 Best Regards, 162 Best Regards,
163 Jun'ichi Nomura 163 Jun'ichi Nomura
164 164
165 Release Date : Fri Nov 11 12:27:22 EST 2005< 165 Release Date : Fri Nov 11 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
166 Current Version : 2.20.4.7 (scsi module), 2.20 166 Current Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
167 Older Version : 2.20.4.6 (scsi module), 2.20 167 Older Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
168 168
169 1. Sorted out PCI IDs to remove megaraid 169 1. Sorted out PCI IDs to remove megaraid support overlaps.
170 Based on the patch from Daniel, sorted 170 Based on the patch from Daniel, sorted out PCI IDs along with
171 character node name change from 'megad 171 character node name change from 'megadev' to 'megadev_legacy' to avoid
172 conflict. 172 conflict.
173 --- 173 ---
174 Hopefully we'll be getting the build r 174 Hopefully we'll be getting the build restriction zapped much sooner,
175 but we should also be thinking about t 175 but we should also be thinking about totally removing the hardware
176 support overlap in the megaraid driver 176 support overlap in the megaraid drivers.
177 177
178 This patch pencils in a date of Feb 06 178 This patch pencils in a date of Feb 06 for this, and performs some
179 printk abuse in hope that existing leg 179 printk abuse in hope that existing legacy users might pick up on what's
180 going on. 180 going on.
181 181
182 Signed-off-by: Daniel Drake <dsd@gentoo 182 Signed-off-by: Daniel Drake <dsd@gentoo.org>
183 --- 183 ---
184 184
185 2. Fixed a issue: megaraid always fails t 185 2. Fixed a issue: megaraid always fails to reset handler.
186 --- 186 ---
187 I found that the megaraid driver alway 187 I found that the megaraid driver always fails to reset the
188 adapter with the following message: 188 adapter with the following message:
189 megaraid: resetting the host.. 189 megaraid: resetting the host...
190 megaraid mbox: reset sequence 190 megaraid mbox: reset sequence completed successfully
191 megaraid: fast sync command ti 191 megaraid: fast sync command timed out
192 megaraid: reservation reset fa 192 megaraid: reservation reset failed
193 when the "Cluster mode" of the adapter 193 when the "Cluster mode" of the adapter BIOS is enabled.
194 So, whenever the reset occurs, the ada 194 So, whenever the reset occurs, the adapter goes to
195 offline and just become unavailable. 195 offline and just become unavailable.
196 196
197 Jun'ichi Nomura [mailto:jnomura@mtc.bi 197 Jun'ichi Nomura [mailto:jnomura@mtc.biglobe.ne.jp]
198 --- 198 ---
199 199
200 Release Date : Mon Mar 07 12:27:22 EST 2005< 200 Release Date : Mon Mar 07 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
201 Current Version : 2.20.4.6 (scsi module), 2.20 201 Current Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
202 Older Version : 2.20.4.5 (scsi module), 2.20 202 Older Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
203 203
204 1. Added IOCTL backward compatibility. 204 1. Added IOCTL backward compatibility.
205 Convert megaraid_mm driver to new comp 205 Convert megaraid_mm driver to new compat_ioctl entry points.
206 I don't have easy access to hardware, 206 I don't have easy access to hardware, so only compile tested.
207 - Signed-off-by:Andi Kleen <ak@ 207 - Signed-off-by:Andi Kleen <ak@muc.de>
208 208
209 2. megaraid_mbox fix: wrong order of argu 209 2. megaraid_mbox fix: wrong order of arguments in memset()
210 That, BTW, shows why cross-builds are 210 That, BTW, shows why cross-builds are useful-the only indication of
211 problem had been a new warning showing 211 problem had been a new warning showing up in sparse output on alpha
212 build (number of exceeding 256 got tru 212 build (number of exceeding 256 got truncated).
213 - Signed-off-by: Al Viro 213 - Signed-off-by: Al Viro
214 <viro@parcelfarce.linux.theplan 214 <viro@parcelfarce.linux.theplanet.co.uk>
215 215
216 3. Convert pci_module_init to pci_registe 216 3. Convert pci_module_init to pci_register_driver
217 Convert from pci_module_init to pci_re 217 Convert from pci_module_init to pci_register_driver
218 (from:http://kernelnewbies.org/KernelJ 218 (from:http://kernelnewbies.org/KernelJanitors/TODO)
219 - Signed-off-by: Domen Puncer < 219 - Signed-off-by: Domen Puncer <domen@coderock.org>
220 220
221 4. Use the pre defined DMA mask constants 221 4. Use the pre defined DMA mask constants from dma-mapping.h
222 Use the DMA_{64,32}BIT_MASK constants 222 Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
223 pci_set_dma_mask() or pci_set_consiste 223 pci_set_dma_mask() or pci_set_consistent_dma_mask(). See
224 http://marc.theaimsgroup.com/?t=108001 224 http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for more
225 details. 225 details.
226 Signed-off-by: Tobias Klauser < 226 Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
227 Signed-off-by: Domen Puncer <do 227 Signed-off-by: Domen Puncer <domen@coderock.org>
228 228
229 5. Remove SSID checking for Dobson, Linds 229 5. Remove SSID checking for Dobson, Lindsay, and Verde based products.
230 Checking the SSVID/SSID for controller 230 Checking the SSVID/SSID for controllers which have Dobson, Lindsay,
231 and Verde is unnecessary because devic 231 and Verde is unnecessary because device ID has been assigned by LSI
232 and it is unique value. So, all contro 232 and it is unique value. So, all controllers with these IOPs have to be
233 supported by the driver regardless SSV 233 supported by the driver regardless SSVID/SSID.
234 234
235 6. Date Thu, 27 Jan 2005 04:31:09 +0100 235 6. Date Thu, 27 Jan 2005 04:31:09 +0100
236 From Herbert Poetzl <> 236 From Herbert Poetzl <>
237 Subject RFC: assert_spin_locked() for 237 Subject RFC: assert_spin_locked() for 2.6
238 238
239 Greetings! 239 Greetings!
240 240
241 overcautious programming will kill you 241 overcautious programming will kill your kernel ;)
242 ever thought about checking a spin_loc 242 ever thought about checking a spin_lock or even
243 asserting that it must be held (maybe 243 asserting that it must be held (maybe just for
244 spinlock debugging?) ... 244 spinlock debugging?) ...
245 245
246 there are several checks present in th 246 there are several checks present in the kernel
247 where somebody does a variation on the 247 where somebody does a variation on the following:
248 248
249 BUG_ON(!spin_is_locked(&some_lock)); 249 BUG_ON(!spin_is_locked(&some_lock));
250 250
251 so what's wrong about that? nothing, u 251 so what's wrong about that? nothing, unless you
252 compile the code with CONFIG_DEBUG_SPI 252 compile the code with CONFIG_DEBUG_SPINLOCK but
253 without CONFIG_SMP ... in which case t 253 without CONFIG_SMP ... in which case the BUG()
254 will kill your kernel ... 254 will kill your kernel ...
255 255
256 maybe it's not advised to make such as 256 maybe it's not advised to make such assertions,
257 but here is a solution which works for 257 but here is a solution which works for me ...
258 (compile tested for sh, x86_64 and x86 258 (compile tested for sh, x86_64 and x86, boot/run
259 tested for x86 only) 259 tested for x86 only)
260 260
261 best, 261 best,
262 Herbert 262 Herbert
263 263
264 - Herbert Poetzl <herbert@13thf 264 - Herbert Poetzl <herbert@13thfloor.at>, Thu, 27 Jan 2005
265 265
266 Release Date : Thu Feb 03 12:27:22 EST 2005< 266 Release Date : Thu Feb 03 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
267 Current Version : 2.20.4.5 (scsi module), 2.20 267 Current Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)
268 Older Version : 2.20.4.4 (scsi module), 2.20 268 Older Version : 2.20.4.4 (scsi module), 2.20.2.4 (cmm module)
269 269
270 1. Modified name of two attributes in scs 270 1. Modified name of two attributes in scsi_host_template.
271 On Wed, 2005-02-02 at 10:56 -0500, Ju, 271 On Wed, 2005-02-02 at 10:56 -0500, Ju, Seokmann wrote:
272 > + .sdev_attrs 272 > + .sdev_attrs = megaraid_device_attrs,
273 > + .shost_attrs 273 > + .shost_attrs = megaraid_class_device_attrs,
274 274
275 These are, perhaps, slightly confusing 275 These are, perhaps, slightly confusing names.
276 The terms device and class_device have 276 The terms device and class_device have well defined meanings in the
277 generic device model, neither of which 277 generic device model, neither of which is what you mean here.
278 Why not simply megaraid_sdev_attrs and 278 Why not simply megaraid_sdev_attrs and megaraid_shost_attrs?
279 279
280 Other than this, it looks fine to me t 280 Other than this, it looks fine to me too.
281 281
282 Release Date : Thu Jan 27 00:01:03 EST 2005< 282 Release Date : Thu Jan 27 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com>
283 Current Version : 2.20.4.4 (scsi module), 2.20 283 Current Version : 2.20.4.4 (scsi module), 2.20.2.5 (cmm module)
284 Older Version : 2.20.4.3 (scsi module), 2.20 284 Older Version : 2.20.4.3 (scsi module), 2.20.2.4 (cmm module)
285 285
286 1. Bump up the version of scsi module due 286 1. Bump up the version of scsi module due to its conflict.
287 287
288 Release Date : Thu Jan 21 00:01:03 EST 2005< 288 Release Date : Thu Jan 21 00:01:03 EST 2005 - Atul Mukker <atulm@lsil.com>
289 Current Version : 2.20.4.3 (scsi module), 2.20 289 Current Version : 2.20.4.3 (scsi module), 2.20.2.5 (cmm module)
290 Older Version : 2.20.4.2 (scsi module), 2.20 290 Older Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
291 291
292 1. Remove driver ioctl for logical drive 292 1. Remove driver ioctl for logical drive to scsi address translation and
293 replace with the sysfs attribute. To r 293 replace with the sysfs attribute. To remove drives and change
294 capacity, application shall now use th 294 capacity, application shall now use the device attribute to get the
295 logical drive number for a scsi device 295 logical drive number for a scsi device. For adding newly created
296 logical drives, class device attribute 296 logical drives, class device attribute would be required to uniquely
297 identify each controller. 297 identify each controller.
298 - Atul Mukker <atulm@lsil.com> 298 - Atul Mukker <atulm@lsil.com>
299 299
300 "James, I've been thinking about this 300 "James, I've been thinking about this a little more, and you may be on
301 to something here. Let each driver add 301 to something here. Let each driver add files as such:"
302 302
303 - Matt Domsch <Matt_Domsch@dell 303 - Matt Domsch <Matt_Domsch@dell.com>, 12.15.2004
304 linux-scsi mailing list 304 linux-scsi mailing list
305 305
306 306
307 "Then, if you simply publish your LD n 307 "Then, if you simply publish your LD number as an extra parameter of
308 the device, you can look through /sys 308 the device, you can look through /sys to find it."
309 309
310 - James Bottomley <James.Bottom 310 - James Bottomley <James.Bottomley@SteelEye.com>, 01.03.2005
311 linux-scsi mailing list 311 linux-scsi mailing list
312 312
313 313
314 "I don't see why not ... it's your dri 314 "I don't see why not ... it's your driver, you can publish whatever
315 extra information you need as scsi_dev 315 extra information you need as scsi_device attributes; that was one of
316 the designs of the extensible attribut 316 the designs of the extensible attribute system."
317 317
318 - James Bottomley <James.Bottom 318 - James Bottomley <James.Bottomley@SteelEye.com>, 01.06.2005
319 linux-scsi mailing list 319 linux-scsi mailing list
320 320
321 2. Add AMI megaraid support - Brian King < 321 2. Add AMI megaraid support - Brian King <brking@charter.net>
322 PCI_VENDOR_ID_AMI, PCI_DEVICE_ 322 PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
323 PCI_VENDOR_ID_AMI, PCI_SUBSYS_ 323 PCI_VENDOR_ID_AMI, PCI_SUBSYS_ID_PERC3_DC,
324 324
325 3. Make some code static - Adrian Bunk <bu 325 3. Make some code static - Adrian Bunk <bunk@stusta.de>
326 Date: Mon, 15 Nov 2004 03:14:57 +010 326 Date: Mon, 15 Nov 2004 03:14:57 +0100
327 327
328 The patch below makes some needlessly 328 The patch below makes some needlessly global code static.
329 -wait_queue_head_t wait_q; 329 -wait_queue_head_t wait_q;
330 +static wait_queue_head_t wait_q; 330 +static wait_queue_head_t wait_q;
331 331
332 Signed-off-by: Adrian Bunk <bunk@stusta 332 Signed-off-by: Adrian Bunk <bunk@stusta.de>
333 333
334 4. Added NEC ROMB support - NEC MegaRAID 334 4. Added NEC ROMB support - NEC MegaRAID PCI Express ROMB controller
335 PCI_VENDOR_ID_LSI_LOGIC, PCI_D 335 PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E,
336 PCI_SUBSYS_ID_NEC, PCI_SUBSYS_ 336 PCI_SUBSYS_ID_NEC, PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E,
337 337
338 5. Fixed Tape drive issue : For any Direc 338 5. Fixed Tape drive issue : For any Direct CDB command to physical device
339 including tape, timeout value set by d 339 including tape, timeout value set by driver was 10 minutes. With this
340 value, most of command will return wit 340 value, most of command will return within timeout. However, for those
341 command like ERASE or FORMAT, it takes 341 command like ERASE or FORMAT, it takes more than an hour depends on
342 capacity of the device and the command 342 capacity of the device and the command could be terminated before it
343 completes. 343 completes.
344 To address this issue, the 'timeout' f 344 To address this issue, the 'timeout' field in the DCDB command will
345 have NO TIMEOUT (i.e., 4) value as its 345 have NO TIMEOUT (i.e., 4) value as its timeout on DCDB command.
346 346
347 347
348 348
349 Release Date : Thu Dec 9 19:10:23 EST 2004 349 Release Date : Thu Dec 9 19:10:23 EST 2004
350 - Sreenivas Bagalkote <sreenib@lsil.com 350 - Sreenivas Bagalkote <sreenib@lsil.com>
351 351
352 Current Version : 2.20.4.2 (scsi module), 2.20 352 Current Version : 2.20.4.2 (scsi module), 2.20.2.4 (cmm module)
353 Older Version : 2.20.4.1 (scsi module), 2.20 353 Older Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
354 354
355 i. Introduced driver ioctl that returns s 355 i. Introduced driver ioctl that returns scsi address for a given ld.
356 356
357 "Why can't the existing sysfs interfac 357 "Why can't the existing sysfs interfaces be used to do this?"
358 - Brian King (brking@us.ibm.co 358 - Brian King (brking@us.ibm.com)
359 359
360 "I've looked into solving this another 360 "I've looked into solving this another way, but I cannot see how
361 to get this driver-private mapping of 361 to get this driver-private mapping of logical drive number-> HCTL
362 without putting code something like th 362 without putting code something like this into the driver."
363 363
364 "...and by providing a mapping a funct 364 "...and by providing a mapping a function to userspace, the driver
365 is free to change its mapping algorith 365 is free to change its mapping algorithm in the future if necessary .."
366 - Matt Domsch (Matt_Domsch@del 366 - Matt Domsch (Matt_Domsch@dell.com)
367 367
368 Release Date : Thu Dec 9 19:02:14 EST 2004< 368 Release Date : Thu Dec 9 19:02:14 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
369 369
370 Current Version : 2.20.4.1 (scsi module), 2.20 370 Current Version : 2.20.4.1 (scsi module), 2.20.2.3 (cmm module)
371 Older Version : 2.20.4.1 (scsi module), 2.20 371 Older Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
372 372
373 i. Fix a bug in kioc's dma buffer dealloc 373 i. Fix a bug in kioc's dma buffer deallocation
374 374
375 Release Date : Thu Nov 4 18:24:56 EST 2004< 375 Release Date : Thu Nov 4 18:24:56 EST 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
376 376
377 Current Version : 2.20.4.1 (scsi module), 2.20 377 Current Version : 2.20.4.1 (scsi module), 2.20.2.2 (cmm module)
378 Older Version : 2.20.4.0 (scsi module), 2.20 378 Older Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
379 379
380 i. Handle IOCTL cmd timeouts more properl 380 i. Handle IOCTL cmd timeouts more properly.
381 381
382 ii. pci_dma_sync_{sg,single}_for_cpu was i 382 ii. pci_dma_sync_{sg,single}_for_cpu was introduced into megaraid_mbox
383 incorrectly (instead of _for_device). 383 incorrectly (instead of _for_device). Changed to appropriate
384 pci_dma_sync_{sg,single}_for_device. 384 pci_dma_sync_{sg,single}_for_device.
385 385
386 Release Date : Wed Oct 06 11:15:29 EDT 2004< 386 Release Date : Wed Oct 06 11:15:29 EDT 2004 - Sreenivas Bagalkote <sreenib@lsil.com>
387 Current Version : 2.20.4.0 (scsi module), 2.20 387 Current Version : 2.20.4.0 (scsi module), 2.20.2.1 (cmm module)
388 Older Version : 2.20.4.0 (scsi module), 2.20 388 Older Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
389 389
390 i. Remove CONFIG_COMPAT around register_i 390 i. Remove CONFIG_COMPAT around register_ioctl32_conversion
391 391
392 Release Date : Mon Sep 27 22:15:07 EDT 2004< 392 Release Date : Mon Sep 27 22:15:07 EDT 2004 - Atul Mukker <atulm@lsil.com>
393 Current Version : 2.20.4.0 (scsi module), 2.20 393 Current Version : 2.20.4.0 (scsi module), 2.20.2.0 (cmm module)
394 Older Version : 2.20.3.1 (scsi module), 2.20 394 Older Version : 2.20.3.1 (scsi module), 2.20.2.0 (cmm module)
395 395
396 i. Fix data corruption. Because of a typo 396 i. Fix data corruption. Because of a typo in the driver, the IO packets
397 were wrongly shared by the ioctl path. 397 were wrongly shared by the ioctl path. This causes a whole IO command
398 to be replaced by an incoming ioctl co 398 to be replaced by an incoming ioctl command.
399 399
400 Release Date : Tue Aug 24 09:43:35 EDT 2004< 400 Release Date : Tue Aug 24 09:43:35 EDT 2004 - Atul Mukker <atulm@lsil.com>
401 Current Version : 2.20.3.1 (scsi module), 2.20 401 Current Version : 2.20.3.1 (scsi module), 2.20.2.0 (cmm module)
402 Older Version : 2.20.3.0 (scsi module), 2.20 402 Older Version : 2.20.3.0 (scsi module), 2.20.2.0 (cmm module)
403 403
404 i. Function reordering so that inline fun 404 i. Function reordering so that inline functions are defined before they
405 are actually used. It is now mandatory 405 are actually used. It is now mandatory for GCC 3.4.1 (current stable)
406 406
407 Declare some heavy-weight functions to 407 Declare some heavy-weight functions to be non-inlined,
408 megaraid_mbox_build_cmd, megaraid_mbox 408 megaraid_mbox_build_cmd, megaraid_mbox_runpendq,
409 megaraid_mbox_prepare_pthru, megaraid_ 409 megaraid_mbox_prepare_pthru, megaraid_mbox_prepare_epthru,
410 megaraid_busywait_mbox 410 megaraid_busywait_mbox
411 411
412 - Andrew Morton, 08.19.2004 412 - Andrew Morton, 08.19.2004
413 linux-scsi mailing list 413 linux-scsi mailing list
414 414
415 "Something else to clean up after incl 415 "Something else to clean up after inclusion: every instance of an
416 inline function is actually rendered a 416 inline function is actually rendered as a full function call, because
417 the function is always used before it 417 the function is always used before it is defined. Atul, please
418 re-arrange the code to eliminate the n 418 re-arrange the code to eliminate the need for most (all) of the
419 function prototypes at the top of each 419 function prototypes at the top of each file, and define (not just
420 declare with a prototype) each inline 420 declare with a prototype) each inline function before its first use"
421 421
422 - Matt Domsch <Matt_Domsch@dell 422 - Matt Domsch <Matt_Domsch@dell.com>, 07.27.2004
423 linux-scsi mailing list 423 linux-scsi mailing list
424 424
425 425
426 ii. Display elapsed time (countdown) while 426 ii. Display elapsed time (countdown) while waiting for FW to boot.
427 427
428 iii. Module compilation reorder in Makefile 428 iii. Module compilation reorder in Makefile so that unresolved symbols do
429 not occur when driver is compiled non- 429 not occur when driver is compiled non-modular.
430 430
431 Patrick J. LoPresti <patl@users 431 Patrick J. LoPresti <patl@users.sourceforge.net>, 8.22.2004
432 linux-scsi mailing list 432 linux-scsi mailing list
433 433
434 434
435 Release Date : Thu Aug 19 09:58:33 EDT 2004< 435 Release Date : Thu Aug 19 09:58:33 EDT 2004 - Atul Mukker <atulm@lsil.com>
436 Current Version : 2.20.3.0 (scsi module), 2.20 436 Current Version : 2.20.3.0 (scsi module), 2.20.2.0 (cmm module)
437 Older Version : 2.20.2.0 (scsi module), 2.20 437 Older Version : 2.20.2.0 (scsi module), 2.20.1.0 (cmm module)
438 438
439 i. When copying the mailbox packets, copy 439 i. When copying the mailbox packets, copy only first 14 bytes (for 32-bit
440 mailboxes) and only first 22 bytes (fo 440 mailboxes) and only first 22 bytes (for 64-bit mailboxes). This is to
441 avoid getting the stale values for bus 441 avoid getting the stale values for busy bit. We want to set the busy
442 bit just before issuing command to the 442 bit just before issuing command to the FW.
443 443
444 ii. In the reset handling, if the reset co 444 ii. In the reset handling, if the reset command is not owned by the
445 driver, do not (wrongly) print informa 445 driver, do not (wrongly) print information for the "attached" driver
446 packet. 446 packet.
447 447
448 iii. Have extended wait when issuing comman 448 iii. Have extended wait when issuing command in synchronous mode. This is
449 required for the cases where the optio 449 required for the cases where the option ROM is disabled and there is
450 no BIOS to start the controller. The F 450 no BIOS to start the controller. The FW starts to boot after receiving
451 the first command from the driver. The 451 the first command from the driver. The current driver has 1 second
452 timeout for the synchronous commands, 452 timeout for the synchronous commands, which is far less than what is
453 actually required. We now wait up to M 453 actually required. We now wait up to MBOX_RESET_TIME (180 seconds) for
454 FW boot process. 454 FW boot process.
455 455
456 iv. In megaraid_mbox_product_info, clear t 456 iv. In megaraid_mbox_product_info, clear the mailbox contents completely
457 before preparing the command for inqui 457 before preparing the command for inquiry3. This is to ensure that the
458 FW does not get junk values in the com 458 FW does not get junk values in the command.
459 459
460 v. Do away with the redundant LSI_CONFIG_ 460 v. Do away with the redundant LSI_CONFIG_COMPAT redefinition for
461 CONFIG_COMPAT. Replace <asm/ioctl32.h> 461 CONFIG_COMPAT. Replace <asm/ioctl32.h> with <linux/ioctl32.h>
462 462
463 - James Bottomley <James.Bottom 463 - James Bottomley <James.Bottomley@SteelEye.com>, 08.17.2004
464 linux-scsi mailing list 464 linux-scsi mailing list
465 465
466 vi. Add support for 64-bit applications. C 466 vi. Add support for 64-bit applications. Current drivers assume only
467 32-bit applications, even on 64-bit pl 467 32-bit applications, even on 64-bit platforms. Use the "data" and
468 "buffer" fields of the mimd_t structur 468 "buffer" fields of the mimd_t structure, instead of embedded 32-bit
469 addresses in application mailbox and p 469 addresses in application mailbox and passthru structures.
470 470
471 vii. Move the function declarations for the 471 vii. Move the function declarations for the management module from
472 megaraid_mm.h to megaraid_mm.c 472 megaraid_mm.h to megaraid_mm.c
473 473
474 - Andrew Morton, 08.19.2004 474 - Andrew Morton, 08.19.2004
475 linux-scsi mailing list 475 linux-scsi mailing list
476 476
477 viii. Change default values for MEGARAID_NEW 477 viii. Change default values for MEGARAID_NEWGEN, MEGARAID_MM, and
478 MEGARAID_MAILBOX to 'n' in Kconfig.meg 478 MEGARAID_MAILBOX to 'n' in Kconfig.megaraid
479 479
480 - Andrew Morton, 08.19.2004 480 - Andrew Morton, 08.19.2004
481 linux-scsi mailing list 481 linux-scsi mailing list
482 482
483 ix. replace udelay with msleep 483 ix. replace udelay with msleep
484 484
485 x. Typos corrected in comments and whites 485 x. Typos corrected in comments and whitespace adjustments, explicit
486 grouping of expressions. 486 grouping of expressions.
487 487
488 488
489 Release Date : Fri Jul 23 15:22:07 EDT 2004< 489 Release Date : Fri Jul 23 15:22:07 EDT 2004 - Atul Mukker <atulm@lsil.com>
490 Current Version : 2.20.2.0 (scsi module), 2.20 490 Current Version : 2.20.2.0 (scsi module), 2.20.1.0 (cmm module)
491 Older Version : 2.20.1.0 (scsi module), 2.20 491 Older Version : 2.20.1.0 (scsi module), 2.20.0.0 (cmm module)
492 492
493 i. Add PCI ids for Acer ROMB 2E solution 493 i. Add PCI ids for Acer ROMB 2E solution
494 494
495 ii. Add PCI ids for I4 495 ii. Add PCI ids for I4
496 496
497 iii. Typo corrected for subsys id for megar 497 iii. Typo corrected for subsys id for megaraid sata 300-4x
498 498
499 iv. Remove yield() while mailbox handshake 499 iv. Remove yield() while mailbox handshake in synchronous commands
500 500
501 501
502 "My other main gripe is things like th 502 "My other main gripe is things like this:
503 503
504 + // wait for maximum 1 second f 504 + // wait for maximum 1 second for status to post
505 + for (i = 0; i < 40000; i++) { 505 + for (i = 0; i < 40000; i++) {
506 + if (mbox->numstatus != 506 + if (mbox->numstatus != 0xFF) break;
507 + udelay(25); yield(); 507 + udelay(25); yield();
508 + } 508 + }
509 509
510 which litter the driver. Use of yield 510 which litter the driver. Use of yield() in drivers is deprecated."
511 511
512 - James Bottomley <James.Bottom 512 - James Bottomley <James.Bottomley@SteelEye.com>, 07.14.2004
513 linux-scsi mailing list 513 linux-scsi mailing list
514 514
515 v. Remove redundant __megaraid_busywait_m 515 v. Remove redundant __megaraid_busywait_mbox routine
516 516
517 vi. Fix bug in the management module, whic 517 vi. Fix bug in the management module, which causes a system lockup when the
518 IO module is loaded and then unloaded, 518 IO module is loaded and then unloaded, followed by executing any
519 management utility. The current versio 519 management utility. The current version of management module does not
520 handle the adapter unregister properly 520 handle the adapter unregister properly.
521 521
522 Specifically, it still keeps a referen 522 Specifically, it still keeps a reference to the unregistered
523 controllers. To avoid this, the static 523 controllers. To avoid this, the static array adapters has been
524 replaced by a dynamic list, which gets 524 replaced by a dynamic list, which gets updated every time an adapter
525 is added or removed. 525 is added or removed.
526 526
527 Also, during unregistration of the IO 527 Also, during unregistration of the IO module, the resources are
528 now released in the exact reverse orde 528 now released in the exact reverse order of the allocation time
529 sequence. 529 sequence.
530 530
531 531
532 Release Date : Fri Jun 25 18:58:43 EDT 2004< 532 Release Date : Fri Jun 25 18:58:43 EDT 2004 - Atul Mukker <atulm@lsil.com>
533 Current Version : 2.20.1.0 533 Current Version : 2.20.1.0
534 Older Version : megaraid 2.20.0.1 534 Older Version : megaraid 2.20.0.1
535 535
536 i. Stale list pointer in adapter causes k 536 i. Stale list pointer in adapter causes kernel panic when module
537 megaraid_mbox is unloaded 537 megaraid_mbox is unloaded
538 538
539 539
540 Release Date : Thu Jun 24 20:37:11 EDT 2004< 540 Release Date : Thu Jun 24 20:37:11 EDT 2004 - Atul Mukker <atulm@lsil.com>
541 Current Version : 2.20.0.1 541 Current Version : 2.20.0.1
542 Older Version : megaraid 2.20.0.00 542 Older Version : megaraid 2.20.0.00
543 543
544 i. Modules are not 'y' by default, but de 544 i. Modules are not 'y' by default, but depend on current definition of
545 SCSI & PCI. 545 SCSI & PCI.
546 546
547 ii. Redundant structure mraid_driver_t rem 547 ii. Redundant structure mraid_driver_t removed.
548 548
549 iii. Miscellaneous indentation and goto/lab 549 iii. Miscellaneous indentation and goto/label fixes.
550 - Christoph Hellwig <hch@infrad 550 - Christoph Hellwig <hch@infradead.org>, 06.24.2004 linux-scsi
551 551
552 iv. scsi_host_put(), do just before comple 552 iv. scsi_host_put(), do just before completing HBA shutdown.
553 553
554 554
555 555
556 Release Date : Mon Jun 21 19:53:54 EDT 2004< 556 Release Date : Mon Jun 21 19:53:54 EDT 2004 - Atul Mukker <atulm@lsil.com>
557 Current Version : 2.20.0.0 557 Current Version : 2.20.0.0
558 Older Version : megaraid 2.20.0.rc2 and 2.00 558 Older Version : megaraid 2.20.0.rc2 and 2.00.3
559 559
560 i. Independent module to interact with us 560 i. Independent module to interact with userland applications and
561 multiplex command to low level RAID mo 561 multiplex command to low level RAID module(s).
562 562
563 "Shared code in a third module, a "lib 563 "Shared code in a third module, a "library module", is an acceptable
564 solution. modprobe automatically loads 564 solution. modprobe automatically loads dependent modules, so users
565 running "modprobe driver1" or "modprob 565 running "modprobe driver1" or "modprobe driver2" would automatically
566 load the shared library module." 566 load the shared library module."
567 567
568 - Jeff Garzik <jgarzik@pobox.co 568 - Jeff Garzik <jgarzik@pobox.com> 02.25.2004 LKML
569 569
570 "As Jeff hinted, if your userspace<->d 570 "As Jeff hinted, if your userspace<->driver API is consistent between
571 your new MPT-based RAID controllers an 571 your new MPT-based RAID controllers and your existing megaraid driver,
572 then perhaps you need a single small h 572 then perhaps you need a single small helper module (lsiioctl or some
573 better name), loaded by both mptraid a 573 better name), loaded by both mptraid and megaraid automatically, which
574 handles registering the /dev/megaraid 574 handles registering the /dev/megaraid node dynamically. In this case,
575 both mptraid and megaraid would regist 575 both mptraid and megaraid would register with lsiioctl for each
576 adapter discovered, and lsiioctl would 576 adapter discovered, and lsiioctl would essentially be a switch,
577 redirecting userspace tool ioctls to t 577 redirecting userspace tool ioctls to the appropriate driver."
578 578
579 - Matt Domsch <Matt_Domsch@dell 579 - Matt Domsch <Matt_Domsch@dell.com> 02.25.2004 LKML
580 580
581 ii. Remove C99 initializations from pci_de 581 ii. Remove C99 initializations from pci_device id.
582 582
583 "pci_id_table_g would be much more rea 583 "pci_id_table_g would be much more readable when not using C99
584 initializers. 584 initializers.
585 PCI table doesn't change, there's lots 585 PCI table doesn't change, there's lots of users that prefer the more
586 readable variant. And it's really far 586 readable variant. And it's really far less and much easier to grok
587 lines without C99 initializers." 587 lines without C99 initializers."
588 588
589 - Christoph Hellwig <hch@infrad 589 - Christoph Hellwig <hch@infradead.org>, 05.28.2004 linux-scsi
590 590
591 iii. Many fixes as suggested by Christoph H< 591 iii. Many fixes as suggested by Christoph Hellwig <hch@infradead.org> on
592 linux-scsi, 05.28.2004 592 linux-scsi, 05.28.2004
593 593
594 iv. We now support up to 32 parallel ioctl 594 iv. We now support up to 32 parallel ioctl commands instead of current 1.
595 There is a conscious effort to let mem 595 There is a conscious effort to let memory allocation not fail for ioctl
596 commands. 596 commands.
597 597
598 v. Do away with internal memory managemen 598 v. Do away with internal memory management. Use pci_pool_(create|alloc)
599 instead. 599 instead.
600 600
601 vi. Kill tasklet when unloading the driver 601 vi. Kill tasklet when unloading the driver.
602 602
603 vii. Do not use "host_lock', driver has fin 603 vii. Do not use "host_lock', driver has fine-grain locks now to protect all
604 data structures. 604 data structures.
605 605
606 viii. Optimize the build scatter-gather list 606 viii. Optimize the build scatter-gather list routine. The callers already
607 know the data transfer address and len 607 know the data transfer address and length.
608 608
609 ix. Better implementation of error handlin 609 ix. Better implementation of error handling and recovery. Driver now
610 performs extended errors recovery for 610 performs extended errors recovery for instances like scsi cable pull.
611 611
612 x. Disassociate the management commands w 612 x. Disassociate the management commands with an overlaid scsi command.
613 Driver now treats the management packe 613 Driver now treats the management packets as special packets and has a
614 dedicated callback routine. 614 dedicated callback routine.
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