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Code Issues Projects Releases Wiki Activity
235 Commits 3 Branches 4 Tags 6.4 MiB
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Commit Graph

226 Commits

Author SHA1 Message Date
Stephen Marz
d6bf3d2685 Remove testing code, change comments 2020-03-16 15:05:04 -04:00
Stephen Marz
40977c2e45 Add global entropy device list 2020-03-16 14:02:28 -04:00
Stephen Marz
4fd36bf898 Move individual chapters, use tags from now on 2020-03-15 20:21:42 -04:00
Stephen Marz
c184aae307 Add rng.rs for ch9 and overall 2020-03-15 20:18:46 -04:00
Stephen Marz
703c2cf5b0 Finish virtio 2020-03-15 20:18:09 -04:00
Stephen Marz
858c838e73 Updates to power of two ring size 2020-03-15 11:11:59 -04:00
Stephen Marz
973ec7449b Added comments to describe functions and enumerations. Also, assumptions have been spelled out. 2020-03-15 11:09:01 -04:00
Stephen Marz
ea4c8ae9c2 Shortened some code using Rust 2020-03-13 21:45:13 -04:00
Stephen Marz
50df049fbb I messed up the header size, which is why writes failed 2020-03-13 20:01:02 -04:00
Stephen Marz
a6c0ff96fe Remove mepc, satp, and pid, we get these from the frame address 2020-03-13 19:38:31 -04:00
Stephen Marz
4487295308 Remove frame extraction 2020-03-13 19:38:06 -04:00
Stephen Marz
c3e7451997 Change trap frame structure to new function, and added quantum multiplier 2020-03-13 19:37:44 -04:00
Stephen Marz
f881eacf26 Remove unused imports, status isn't currently being used in trap, and removed unsafe from trap 7 2020-03-13 19:37:21 -04:00
Stephen Marz
44f2f3acb5 Changed testing apparatus 2020-03-13 19:36:53 -04:00
Stephen Marz
46afb47ab6 changed used ring to be page aligned 2020-03-13 19:36:34 -04:00
Stephen Marz
0954532a5b changed used ring to be page aligned 2020-03-13 19:36:24 -04:00
Stephen Marz
cfbc4b516a Remove block::init, it's not necessary anymore 2020-03-13 15:33:37 -04:00
Stephen Marz
8f55a9a6ec Remove reference when using ref 2020-03-13 15:31:47 -04:00
Stephen Marz
67f30af9a9 Clean up interrupt code 2020-03-13 13:23:55 -04:00
Stephen Marz
cbc3622c8e Remove debugging output 2020-03-13 13:16:43 -04:00
Stephen Marz
497abf1660 Added comments, will need to centralize the read/write functions 2020-03-13 13:04:41 -04:00
Stephen Marz
5e0be36d45 My fault, the mut's in let Some don't actually do anything. 2020-03-13 12:58:16 -04:00
Stephen Marz
efb26d6aa3 Add cargo 2020-03-13 11:47:11 -04:00
Stephen Marz
08b227e223 Add ignore 2020-03-13 11:46:13 -04:00
Stephen Marz
9524954eb2 Remove unnecessary code 2020-03-13 11:28:39 -04:00
Stephen Marz
eec1047ac9 Document how to get the index from mmio address 2020-03-13 11:23:08 -04:00
Stephen Marz
5b2e780484 move index so that it has more time to write 2020-03-13 11:17:32 -04:00
Stephen Marz
9623de2e50 Added PLIC handler to delegate to virtio. Virtio now delegates to the virtio device type to handle PLIC interrupts. We now handle interrupts from VirtIO as well as free memory associated with it. 2020-03-13 11:15:12 -04:00
Stephen Marz
016520a354 Support new block list 2020-03-12 20:44:53 -04:00
Stephen Marz
72563c3161 Switch to a static block list. This will make it easier to determine 
which drive we're talking about. 1 is 0x1000_1000 ... 8 is 0x1000_8000
 2020-03-12 20:44:28 -04:00
Stephen Marz
93969a2bf5 Added testing first 10 bytes of the hdd.dsk file 2020-03-12 20:10:36 -04:00
Stephen Marz
58efe7e3ac Added block request read. Quite dirty, but for now it works 2020-03-12 19:47:58 -04:00
Stephen Marz
552595d901 Fixed to use new scheduler return values 2020-03-12 13:56:21 -04:00
Stephen Marz
7b038cdc24 Right now, we return a pointer by usize. This is not good programming in 
Rust. Instead, the scheduler needs to be modified to return a process
structure's reference. Then, we can extract the fields and then switch.
However, this will require us to have to change how the PROCESS_LIST
works. Since it uses move constructs, we cannot move a process out of it
when we replace the process list.
 2020-03-12 13:55:11 -04:00
Stephen Marz
d9b1743698 Changed scheduler to only return the frame and satp register. The mepc 
is now stored in the trap frame.
 2020-03-12 13:54:39 -04:00
Stephen Marz
c6b261bf20 Added comments and reformatted using rustfmt 2020-03-12 13:36:50 -04:00
Stephen Marz
bc9158bd23 Changed the queue size to only take one page. 2020-03-12 13:36:18 -04:00
Stephen Marz
f5ce75dbe8 Finished setup, rearranged queue creation and testing bits. This makes it so we don't have to free anything if we fail after setting up the queue. 2020-03-12 13:36:08 -04:00
Stephen Marz
a32c6fc995 Updates 2020-03-11 17:09:09 -04:00
Stephen Marz
46a6296dec Added block specific routines and stub setup routine for block devices 2020-03-10 19:29:29 -04:00
Stephen Marz
39cb72ad9f Added virtio probing to kinit 2020-03-10 17:17:12 -04:00
Stephen Marz
a29698221d Added virtio structures and stubs for setting up devices 2020-03-10 17:16:57 -04:00
Stephen Marz
d403ae8b7b Add hdd.dsk to ignore 2020-03-10 17:16:44 -04:00
Stephen Marz
3ffb53405d Add many virtio devices 2020-03-10 17:16:13 -04:00
Stephen Marz
795e7945f8 Load block device through make run 2020-03-10 16:51:22 -04:00
Stephen Marz
d44f729957 Split CTX switch time and frequency and also use build_satp for switching to user process 2020-03-10 15:35:21 -04:00
Stephen Marz
f2b1e2018a Moved PC to trap frame so we don't restart the function 2020-03-10 14:55:26 -04:00
Stephen Marz
2984472493 Added chapter 9 2020-03-10 13:52:09 -04:00
Stephen Marz
d154e86d9e Added Cargo.lock 2020-03-10 13:51:44 -04:00
Stephen Marz
08c5ddafc2 Updated comments and removed debugging code 2020-03-10 13:50:08 -04:00
Stephen Marz
2bcf1bb000 Change cycle time 2020-03-10 13:01:32 -04:00
Stephen Marz
b27784ed52 Separate sched and switch_to_user 2020-03-10 12:59:36 -04:00
Stephen Marz
cb54d823d2 Fire off the first CTX switch timer! 2020-03-10 12:46:52 -04:00
Stephen Marz
429b056921 Updates to system call. Change stack pointer for MMU 2020-03-10 12:44:08 -04:00
Stephen Marz
88c672171e Fixed trap. Forgot to reset mtvec in switch_to_user 2020-03-10 12:41:16 -04:00
Stephen Marz
f2f5c855cf M 2020-03-10 11:21:15 -04:00
Stephen Marz
57145beefd Fixed trap handler, load kernel stack from trap, fixed init, map a larger swath of memory for init. 2020-03-10 11:20:00 -04:00
Stephen Marz
e6ccf15bda Added .gitignore to make this doable 2020-03-09 17:51:32 -04:00
Stephen Marz
ee92f8e123 Ugh. Remove target 2020-03-09 17:51:10 -04:00
Stephen Marz
b139313874 Added chapter 8 2020-02-22 08:53:59 -05:00
Alex Chi
2474df886c
Add data flush in uart put function 2020-02-03 10:33:00 +08:00
Stephen Marz
4ffb6e3e3b Added syscall and shell scheduler 2020-01-18 20:22:47 -05:00
Stephen Marz
e8e379e557 Updates to ch6 -- post ready. 2019-12-08 14:30:41 -05:00
Stephen Marz
eb0c943a71 Updates to process. 2019-12-07 22:04:13 -05:00
Stephen Marz
c1e247cad5 Move lots of code to support user processes. 2019-12-07 13:59:39 -05:00
Stephen Marz
f8c2faa3ae Updates to process code. 2019-12-05 19:52:02 -05:00
Stephen Marz
fa82110eac Added adjustment constants. 2019-11-28 12:27:13 -05:00
Stephen Marz
ba678d2252 Fixed HEAP map bug. 2019-11-28 12:22:42 -05:00
Stephen Marz
b723763292 Free root table. 2019-11-28 12:05:24 -05:00
Stephen Marz
b61b3ebbf5 Use zalloc to clear page tables. 2019-11-28 12:04:21 -05:00
Stephen Marz
c99bff8944 Use zalloc to clear page tables. 2019-11-28 12:02:37 -05:00
Stephen Marz
c5179e60d6 Added virtual memory allocation. 2019-11-28 12:01:52 -05:00
Stephen Marz
26e37d33d3 Added comments to process 2019-11-27 23:42:50 -05:00
Stephen Marz
d0c3c9ff6e Add Process structure and routines. 2019-11-27 17:02:07 -05:00
Stephen Marz
4ec1301e8f Added chapter 6 2019-11-27 12:59:29 -05:00
Stephen Marz
b9158e5ef7 Added comments for plic. 2019-11-18 19:30:19 -05:00
Stephen Marz
5ca14d6e65 Added comments, moved UART 2019-11-18 19:21:32 -05:00
Stephen Marz
61bb8f3a43 Added comments 2019-11-18 19:19:05 -05:00
Stephen Marz
7faf580765 Added PLIC 2019-11-18 19:14:16 -05:00
Stephen Marz
fb86ff06da Added PLIC 2019-11-18 19:14:08 -05:00
Stephen Marz
03ff50ef30 Added PLIC 2019-11-18 19:13:52 -05:00
Stephen Marz
b3cd92dc41 Added comments 2019-11-10 09:20:40 -05:00
Stephen Marz
e2dfa8661f Remove public constants 2019-11-04 15:35:24 -05:00
Stephen Marz
f7547d5c59 Add comments about pointer arithmetic. 2019-11-04 15:27:56 -05:00
Stephen Marz
783cdcfc3b Remove if statement--let boolean condition stand 2019-11-04 15:26:47 -05:00
Stephen Marz
0c71107da8 Add PLIC functions 2019-11-04 15:25:27 -05:00
Stephen Marz
49d8d6666a Start chapter 5 2019-11-04 13:14:28 -05:00
Stephen Marz
f13948d5c0 Fixed typos, updates. 2019-11-04 13:04:00 -05:00
Stephen Marz
6cbf12ada9 Updates to pages 2019-11-03 21:26:39 -05:00
Stephen Marz
6cc5cba4b8 Added return_pc as mutable 2019-11-03 21:23:30 -05:00
Stephen Marz
07dffe1823 added ecall printf 2019-11-03 21:21:43 -05:00
Stephen Marz
175c4fc7eb Added timer reset in async 7 2019-11-03 21:17:29 -05:00
Stephen Marz
4211090d17 Fixed typos 2019-11-03 19:08:35 -05:00
Stephen Marz
a76745278e Fixed unit type 2019-11-03 19:07:42 -05:00
Stephen Marz
ac5e41ceb4 Update comments 2019-11-03 19:06:38 -05:00
Stephen Marz
79a6500c0b Rename stat to status 2019-11-03 19:03:10 -05:00
Stephen Marz
5a8523099a Added epc to trap 3 and 11 2019-11-03 19:00:46 -05:00
Stephen Marz
efaecf96d6 Fixed typo 2019-11-03 19:00:24 -05:00
Stephen Marz
ee5094d821 Added shell traps 2019-11-03 19:00:14 -05:00
Stephen Marz
ccad138c03 Changed trap to machine-only 2019-11-03 18:56:43 -05:00