63b69d8d85
util: fix absdiff64() always over/underflowing
2023-12-24 09:36:41 +00:00
e9e73bc027
dev: removed internal spinlock from bcache
...
bcaches must now have an explicit external lock to protect them from
concurrent access (i.e. a lock belonging to their parent block device)
2023-07-11 21:28:02 +01:00
3233169f25
dev: implement reading from block devices
...
reading from block devices is done using the block cache (bcache).
This cache stores sectors from a block device in pages of memory
marked as 'cached', which will allow them to be reclaimed when
memory pressure is high (TODO).
while block device drivers implement callbacks allowing reading/writing
at block-granularity, the device subsystem uses the block cache to
implement reading/writing at byte-granularity in a driver-agnostic way.
block drivers can disable the block cache for their devices, but this
will require that any clients communicate with the devices at
block-granularity.
also added an offset parameter to device and object read/write functions/callbacks.
2023-07-09 21:58:40 +01:00
53440653f2
kernel: remove static qualifier from functions generated by btree convenience macros
2023-07-09 21:57:04 +01:00
49f50859b5
dev: block device IO callbacks now use iovec
2023-07-09 09:06:36 +01:00
8463423c10
kernel: add endian conversion functions
2023-07-08 22:14:31 +01:00
db992a0994
kernel: add status codes for device IO
2023-07-08 15:55:56 +01:00
d9b9c0d4e7
dev: implement block device registration
2023-07-08 15:55:43 +01:00
71dbdf21a2
dev: allow devices to specify human-readable model names
2023-07-08 15:53:59 +01:00
d96c549f17
vm: allow pages to be mapped as no-cache
2023-07-08 15:53:06 +01:00
65db7cfbda
kernel: add filesystem model definitions
2023-06-25 11:03:44 +01:00
1c20efc36e
dev: add function to ref/deref device objects
2023-06-14 21:44:47 +01:00
2656696757
tty: reading input from a tty is now handled by the line discipline
2023-06-14 17:38:11 +01:00
4a1c6cae69
sched: add support for scheduling functions to be executed later
2023-06-14 17:36:45 +01:00
cdb9fef36c
tty: remove tty event queues
2023-06-11 19:00:55 +01:00
a7c28e983c
kernel: tty: implement tty input using line disciplines
2023-06-11 16:47:33 +01:00
7308fd98fb
dev: implement input event hooks
2023-06-11 16:46:58 +01:00
3cc72f1f24
kernel: tty: support printing output from printk()
2023-06-11 14:55:47 +01:00
abe4af093e
tty: implement read/write support
2023-06-11 09:23:57 +01:00
d09ad5838e
kernel: implement tty driver system
2023-06-10 21:41:07 +01:00
c5edce612d
dev: implement generic devices
...
generic devices don't have a type (char, block, etc) and are created
by bus drivers to represent the device until a suitable driver is found.
generic devices are registered by the bus driver. once a more suitable
driver is found, that driver will re-register the device under itself.
2023-06-10 13:21:42 +01:00
20f77893cf
dev: implement bus device enumeration
2023-06-09 21:24:51 +01:00
f83ecca490
dev: boot framebuffer support
2023-06-08 20:46:43 +01:00
ff8902ef1c
kernel: add more status codes
2023-06-08 20:46:20 +01:00
cb220452db
dev: start implementing framebuffer devices
2023-06-06 22:01:17 +01:00
b7b0691b8f
dev: implement driver objects to organise and identify devices
2023-06-02 19:35:07 +01:00
577abf3bba
obj: implement link objects
2023-06-02 19:34:33 +01:00
fcf5dc32b9
kernel: add BITMAP_NPOS definition
2023-06-02 19:31:09 +01:00
d02d05d922
obj: add read() and write() object callbacks
2023-05-14 21:11:32 +01:00
0238008986
dev: auto-generate device name in device_register if name is unspecified
2023-05-11 21:19:00 +01:00
05395542a8
dev: implement writing/reading input events to/from input devices
2023-05-10 20:33:40 +01:00
422d4fb375
kernel: implement ring-buffer data structure
2023-05-10 20:32:29 +01:00
63f27adb1b
sched: implement waitqueues
2023-05-10 20:29:57 +01:00
1a633eee6b
dev: implement object callbacks for devices. add misc device
2023-05-08 18:18:34 +01:00
9f3c080e41
vm: minimum and maximum zone IDs are now defined in arch/../vm.h
2023-05-07 21:39:31 +01:00
a79d109fcc
obj: add header-offset field to object_type
...
this allows the object header to be placed anywhere within the larger
object structure.
the object system now also ensures that the object is zero-initialised
during allocation.
2023-05-06 22:22:05 +01:00
94ea756b31
kernel: write to all registered consoles with printk()
2023-05-06 21:32:19 +01:00
f52ca2f1e2
obj: object header is no longer allocated automatically
2023-05-06 19:48:14 +01:00
cec6b644ac
kernel: add functions to query the number of available/online CPUs
2023-05-05 15:25:44 +01:00
7d321fb7f0
sched: add kernel thread creation and SMP-aware thread scheduling
2023-05-04 21:43:18 +01:00
bb524c1576
kernel: add support for getting percpu variables that belong to other CPUs
2023-05-04 21:42:51 +01:00
c64577e24e
sched: add function to create per-cpu idle threads
2023-05-03 19:27:18 +01:00
a52571eb19
kernel: add panic() function that accepts a cpu_context
2023-05-03 19:26:09 +01:00
654e54653c
x86_64: pmap: implement pmap_add()
2023-05-01 18:12:07 +01:00
40762ffb95
kernel: add function to query the current preempt count
2023-05-01 08:26:41 +01:00
8a0291c9b3
sched: add timer tasks and schedule_timeout()
2023-04-30 21:09:36 +01:00
085c3d2a89
sched: add kernel-mode context switching
2023-04-30 14:27:57 +01:00
e2131b08ac
sched: track CPU clock cycles used by threads
2023-04-28 21:05:48 +01:00
6b1b4a2416
kernel: add function to calculate delta between two cycle timestamps
2023-04-28 21:05:13 +01:00
72d8facd47
kernel: add standard clock system
2023-04-28 20:51:51 +01:00
