/**
* Initializes the container data for the root process (the one with index 0).
* The root process is the one that gets spawned first by the kernel.
*/
void container_init(unsigned int mbi_addr)
{
unsigned int real_quota;
// TODO: define your local variables here.
int max_nps;
int i;
pmem_init(mbi_addr);
real_quota = 0;
max_nps = get_nps();
/**
* TODO: compute the available quota and store it into the variable real_quota.
* It should be the number of the unallocated pages with the normal permission
* in the physical memory allocation table.
*/
for (i = 0; i < max_nps; i++)
{
if (at_is_norm(i) == 1 && at_is_allocated(i) == 0)
{
real_quota += 1;
}
}
KERN_DEBUG("\nreal quota: %d\n\n", real_quota);
CONTAINER[0].quota = real_quota;
CONTAINER[0].usage = 0;
CONTAINER[0].parent = 0;
CONTAINER[0].nchildren = 0;
CONTAINER[0].used = 1;
}
/**
* Initializes the container data for the root process (the one with index 0).
* The root process is the one that gets spawned first by the kernel.
*/
void container_init(unsigned int mbi_addr)
{
unsigned int real_quota;
unsigned int nps, i, norm, used;
pmem_init(mbi_addr);
real_quota = 0;
/**
* compute the available quota and store it into the variable real_quota.
* It should be the number of the unallocated pages with the normal permission
* in the physical memory allocation table.
*/
nps = get_nps();
i = 1;
while (i < nps) {
norm = at_is_norm(i);
used = at_is_allocated(i);
if (norm == 1 && used == 0)
real_quota++;
i++;
}
KERN_DEBUG("\nreal quota: %d\n\n", real_quota);
CONTAINER[0].quota = real_quota;
CONTAINER[0].usage = 0;
CONTAINER[0].parent = 0;
CONTAINER[0].nchildren = 0;
CONTAINER[0].used = 1;
}
/*
**++
** FUNCTIONAL DESCRIPTION:
**
** i8042_wait_input
**
** This function waits until input is available to be read from
** the 8042 output buffer.
**
** FORMAL PARAMETERS:
**
** iot I/O tag for the mapped register space
** ioh I/O handle for the mapped register space
** type Type of input to wait for (auxiliary, keyboard or any).
**
** IMPLICIT INPUTS:
**
** none.
**
** IMPLICIT OUTPUTS:
**
** none.
**
** FUNCTION VALUE:
**
** 0 - Timed out waiting for input
** 1 - Input available to be read
**--
*/
int
i8042_wait_input(bus_space_tag_t iot,
bus_space_handle_t ioh,
u_char type)
{
register u_int count;
register u_char status;
int retValue = 0;
for (count = I8042_WAIT_THRESHOLD; count; count--)
{
/* Check if there is a character to be read */
status = bus_space_read_1(iot, ioh, KBSTATPO);
if (((status & type) == type) ||
((type == I8042_ANY_DATA) && (status & KBS_DIB)))
{
retValue = 1;
break;
}
I8042_DELAY;
}
KERN_DEBUG(i8042debug, KERN_DEBUG_INFO,
("i8042_wait_input: returning : %s\n\tlast status : 0x%x\n",
retValue ? "Found Data" : "Exceeded Wait Threshold",
status));
return (retValue);
} /* End i8042_wait_input */
void
kern_init (uintptr_t mbi_addr)
{
thread_init(mbi_addr);
KERN_DEBUG("Kernel initialized.\n");
kern_main ();
}
int
mon_start_user (int argc, char **argv, struct Trapframe *tf)
{
unsigned int idle_pid;
idle_pid = proc_create (_binary___obj_user_idle_idle_start, 10000);
KERN_DEBUG("process idle %d is created.\n", idle_pid);
KERN_INFO("Start user-space ... \n");
tqueue_remove (NUM_IDS, idle_pid);
tcb_set_state (idle_pid, TSTATE_RUN);
set_curid (idle_pid);
kctx_switch (0, idle_pid);
KERN_PANIC("mon_startuser() should never reach here.\n");
}
static void
kern_main (void)
{
KERN_DEBUG("In kernel main.\n\n");
#ifdef TEST
dprintf("Testing the PKCtxNew layer...\n");
if(test_PKCtxNew() == 0)
dprintf("All tests passed.\n");
else
dprintf("Test failed.\n");
dprintf("\n");
dprintf("Testing the PTCBInit layer...\n");
if(test_PTCBInit() == 0)
dprintf("All tests passed.\n");
else
dprintf("Test failed.\n");
dprintf("\n");
dprintf("Testing the PTQueueInit layer...\n");
if(test_PTQueueInit() == 0)
dprintf("All tests passed.\n");
else
dprintf("Test failed.\n");
dprintf("\n");
dprintf("Testing the PThread layer...\n");
if(test_PThread() == 0)
dprintf("All tests passed.\n");
else
dprintf("Test failed.\n");
dprintf("\n");
dprintf("\nTest complete. Please Use Ctrl-a x to exit qemu.");
#else
monitor(NULL);
#endif
}
static void trap_dump(tf_t *tf)
{
if (tf == NULL)
return;
uintptr_t base = (uintptr_t) tf;
KERN_DEBUG("trapframe at %x\n", base);
KERN_DEBUG("\t%08x:\tedi: \t\t%08x\n", &tf->regs.edi, tf->regs.edi);
KERN_DEBUG("\t%08x:\tesi: \t\t%08x\n", &tf->regs.esi, tf->regs.esi);
KERN_DEBUG("\t%08x:\tebp: \t\t%08x\n", &tf->regs.ebp, tf->regs.ebp);
KERN_DEBUG("\t%08x:\tesp: \t\t%08x\n", &tf->regs.oesp, tf->regs.oesp);
KERN_DEBUG("\t%08x:\tebx: \t\t%08x\n", &tf->regs.ebx, tf->regs.ebx);
KERN_DEBUG("\t%08x:\tedx: \t\t%08x\n", &tf->regs.edx, tf->regs.edx);
KERN_DEBUG("\t%08x:\tecx: \t\t%08x\n", &tf->regs.ecx, tf->regs.ecx);
KERN_DEBUG("\t%08x:\teax: \t\t%08x\n", &tf->regs.eax, tf->regs.eax);
KERN_DEBUG("\t%08x:\tes: \t\t%08x\n", &tf->es, tf->es);
KERN_DEBUG("\t%08x:\tds: \t\t%08x\n", &tf->ds, tf->ds);
KERN_DEBUG("\t%08x:\ttrapno:\t\t%08x\n", &tf->trapno, tf->trapno);
KERN_DEBUG("\t%08x:\terr: \t\t%08x\n", &tf->err, tf->err);
KERN_DEBUG("\t%08x:\teip: \t\t%08x\n", &tf->eip, tf->eip);
KERN_DEBUG("\t%08x:\tcs: \t\t%08x\n", &tf->cs, tf->cs);
KERN_DEBUG("\t%08x:\teflags:\t\t%08x\n", &tf->eflags, tf->eflags);
KERN_DEBUG("\t%08x:\tesp: \t\t%08x\n", &tf->esp, tf->esp);
KERN_DEBUG("\t%08x:\tss: \t\t%08x\n", &tf->ss, tf->ss);
}
/*
**++
** FUNCTIONAL DESCRIPTION:
**
** i8042_cmd
**
** This function sends a command to the 8042 device or the auxiliary
** device hanging off it. The command is retried a
** number of times if a resend response is received.
**
** FORMAL PARAMETERS:
**
** iot I/O tag for the mapped register space
** ioh I/O handle for the mapped register space
** auxCmd An indication of what type of command this is.
** checkResponse A switch indicating whether to read a result after
** executing the command and compare ot with
** "responseExpected".
** responseExpected Only valid if "checkResponse" is non-zero. This
** is compared with the data value read after the
** command has been executed.
** value Command to send to the device selected by "auxCmd".
**
** IMPLICIT INPUTS:
**
** none.
**
** IMPLICIT OUTPUTS:
**
** none.
**
** FUNCTION VALUE:
**
** 0 - Failed to send command or receive acknowledgement for it
** 1 - Command sent and responded to successfully.
**--
*/
int
i8042_cmd(bus_space_tag_t iot,
bus_space_handle_t ioh,
u_char auxCmd,
u_char checkResponse,
u_char responseExpected,
u_char value)
{
u_int retries;
register u_char c = 0;
int status;
/* Assume failure
*/
status = 0;
for (retries = I8042_RETRIES;
i8042_wait_output(iot,ioh) && retries;
retries--)
{
if (auxCmd == I8042_AUX_CMD)
{
/* Setup to write command to auxiliary device
*/
bus_space_write_1(iot, ioh, KBCMDPO, KBC_AUXWRITE);
/* Write actual command to selected device
*/
if (i8042_wait_output(iot,ioh))
{
bus_space_write_1(iot, ioh, KBOUTPO, value);
}
else
{
KERN_DEBUG(i8042debug, KERN_DEBUG_WARNING,
("i8042_cmd: failed aux device request of 0x%x\n",
value));
break;
}
}
else if (auxCmd == I8042_CMD)
{
/* Write command to keyboard controller requested.
*/
bus_space_write_1(iot, ioh, KBCMDPO, value);
}
else if (auxCmd == I8042_KBD_CMD)
{
/* Write a command to actual keyboard H/W device.
*/
bus_space_write_1(iot, ioh, KBOUTPO, value);
}
else if (auxCmd == I8042_WRITE_CCB)
{
/* Write 8042 Controller Command Byte requested
*/
bus_space_write_1(iot, ioh, KBCMDPO, K_LDCMDBYTE);
/* Write actual command to selected device
*/
if (i8042_wait_output(iot,ioh))
{
bus_space_write_1(iot, ioh, KBOUTPO, value);
}
else
{
KERN_DEBUG(i8042debug, KERN_DEBUG_WARNING,
("i8042_cmd: failed contoller command byte "
"write request of 0x%x\n",
value));
break;
}
}
else
{
KERN_DEBUG(i8042debug, KERN_DEBUG_WARNING,
("i8042_cmd: invalid device identifier of 0x%x\n",
auxCmd));
break;
}
/* Does anyone need to check the result of this command ?
*/
if (checkResponse == I8042_CHECK_RESPONSE)
{
/* get response from device and check if
** successful.
*/
if (i8042_wait_input(iot,ioh,I8042_ANY_DATA))
{
c = bus_space_read_1(iot, ioh, KBDATAPO);
if (c == responseExpected)
{
/* Successfull command so we're outa here
*/
status = 1;
break;
}
else if (c == KBR_RESEND)
{
/* Hmm response was try again so lets.
*/
KERN_DEBUG(i8042debug, KERN_DEBUG_WARNING,
("i8042_cmd: resend of 0x%x\n", value));
}
else
{
/* response was nothing we expected so we're
** outa here.
*/
KERN_DEBUG(i8042debug, KERN_DEBUG_WARNING,
("i8042_cmd: unexpected response 0x%x\n", c));
break;
}
} /* End If able to get response from device */
else
{
/* Timmed out waiting for a response .... maybe we
** weren't meant to get one ??
*/
KERN_DEBUG(i8042debug, KERN_DEBUG_WARNING,
("i8042_cmd: no response to command 0x%x\n",
value));
break;
}
} /* End if need to check for response */
else
{
/* Not requested to check for response and we did send the
** command so I guess we were successful :-)
*/
status = 1;
break;
}
} /* End loop for several retries if needed a response */
/* Diagnostic output on command value, result and status returned
*/
KERN_DEBUG(i8042debug, KERN_DEBUG_INFO,
("i8042_cmd: %s Device : Command 0x%x: %s:\n\t "
"Check Value 0x%x: "
"Response Value 0x%x: Status being returned 0x%x\n",
(auxCmd == I8042_AUX_CMD) ? "Auxiliary" : "Keyboard",
value,
(checkResponse == I8042_CHECK_RESPONSE) ?
"Checking response" : "NOT checking response",
responseExpected, c, status));
return (status);
} /* End i8042_cmd */