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minix/drivers/ti1225/ti1225.c
Cristiano Giuffrida d1fd04e72a Initialization protocol for system services. 
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.

SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic 
registration / deregistration of system services.

VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.

RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 01:20:42 +00:00

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/*
ti1225.c
Created: Dec 2005 by Philip Homburg
*/
#include "../drivers.h"
#include <ibm/pci.h>
#include <sys/vm.h>
#include <sys/vm_i386.h>
#include "ti1225.h"
#include "i82365.h"
/* The use of interrupts is not yet ready for prime time */
#define USE_INTS 0
#define NR_PORTS 2
PRIVATE struct port
{
unsigned p_flags;
int p_devind;
u8_t p_cb_busnr;
u16_t p_exca_port;
#if USE_INTS
int p_irq;
int p_hook;
#endif
char *base_ptr;
volatile struct csr *csr_ptr;
char buffer[2*I386_PAGE_SIZE];
} ports[NR_PORTS];
#define PF_PRESENT 1
struct pcitab
{
u16_t vid;
u16_t did;
int checkclass;
};
PRIVATE struct pcitab pcitab_ti[]=
{
{ 0x104C, 0xAC1C, 0 }, /* TI PCI1225 */
{ 0x0000, 0x0000, 0 }
};
PRIVATE char *progname;
PRIVATE int debug;
FORWARD _PROTOTYPE( void hw_init, (struct port *pp) );
FORWARD _PROTOTYPE( void map_regs, (struct port *pp, u32_t base) );
FORWARD _PROTOTYPE( void do_int, (struct port *pp) );
FORWARD _PROTOTYPE( u8_t read_exca, (struct port *pp, int socket, int reg) );
FORWARD _PROTOTYPE( void do_outb, (port_t port, u8_t value) );
FORWARD _PROTOTYPE( u8_t do_inb, (port_t port) );
/* SEF functions and variables. */
FORWARD _PROTOTYPE( void sef_local_startup, (void) );
FORWARD _PROTOTYPE( int sef_cb_init_fresh, (int type, sef_init_info_t *info) );
EXTERN int env_argc;
EXTERN char **env_argv;
/*===========================================================================*
* main *
*===========================================================================*/
int main(int argc, char *argv[])
{
int r;
message m;
/* SEF local startup. */
env_setargs(argc, argv);
sef_local_startup();
for (;;)
{
r= sef_receive(ANY, &m);
if (r != OK)
panic("ti1225", "sef_receive failed", r);
printf("ti1225: got message %u from %d\n",
m.m_type, m.m_source);
}
return 0;
}
/*===========================================================================*
* sef_local_startup *
*===========================================================================*/
PRIVATE void sef_local_startup()
{
/* Register init callbacks. */
sef_setcb_init_fresh(sef_cb_init_fresh);
sef_setcb_init_lu(sef_cb_init_fresh);
sef_setcb_init_restart(sef_cb_init_fresh);
/* Register live update callbacks. */
sef_setcb_lu_prepare(sef_cb_lu_prepare_always_ready);
sef_setcb_lu_state_isvalid(sef_cb_lu_state_isvalid_standard);
/* Let SEF perform startup. */
sef_startup();
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
{
/* Initialize the ti1225 driver. */
int c, i, r, first, devind, port;
u16_t vid, did;
(progname=strrchr(env_argv[0],'/')) ? progname++
: (progname=env_argv[0]);
if((r=micro_delay_calibrate()) != OK)
panic("ti1225", "micro_delay_calibrate failed", r);
debug= 0;
while (c= getopt(env_argc, env_argv, "d?"), c != -1)
{
switch(c)
{
case '?': panic("ti1225", "Usage: ti1225 [-d]", NO_NUM);
case 'd': debug++; break;
default: panic("ti1225", "getopt failed", NO_NUM);
}
}
pci_init1(progname);
first= 1;
port= 0;
for (;;)
{
if (first)
{
first= 0;
r= pci_first_dev(&devind, &vid, &did);
}
else
r= pci_next_dev(&devind, &vid, &did);
if (r != 1)
break;
for (i= 0; pcitab_ti[i].vid != 0; i++)
{
if (pcitab_ti[i].vid != vid)
continue;
if (pcitab_ti[i].did != did)
continue;
if (pcitab_ti[i].checkclass)
{
panic("ti1225",
"fxp_probe: class check not implemented",
NO_NUM);
}
break;
}
if (pcitab_ti[i].vid == 0)
continue;
pci_reserve(devind);
if (debug)
printf("ti1225: found device %04x/%04x\n", vid, did);
ports[port].p_devind= devind;
ports[port].p_flags |= PF_PRESENT;
port++;
if (port >= NR_PORTS)
break;
}
for (i= 0; i<NR_PORTS; i++)
{
if (!(ports[i].p_flags & PF_PRESENT))
continue;
hw_init(&ports[i]);
}
return(OK);
}
PRIVATE void hw_init(pp)
struct port *pp;
{
int i, r, devind, irq, socket;
u8_t v8;
u16_t v16;
u32_t v32;
devind= pp->p_devind;
if (debug)
printf("hw_init: devind = %d\n", devind);
if (debug)
{
v16= pci_attr_r16(devind, PCI_CR);
printf("ti1225: command register 0x%x\n", v16);
}
v32= pci_attr_r32(devind, TI_CB_BASEADDR);
if (debug)
printf("ti1225: Cardbus/ExCA base address 0x%x\n", v32);
map_regs(pp, v32);
pp->csr_ptr= (struct csr *)pp->base_ptr;
if (debug)
{
v8= pci_attr_r8(devind, TI_PCI_BUS_NR);
printf("ti1225: PCI bus number %d\n", v8);
}
v8= pci_attr_r8(devind, TI_CB_BUS_NR);
pp->p_cb_busnr= v8;
if (debug)
{
printf("ti1225: CardBus bus number %d\n", v8);
v8= pci_attr_r8(devind, TI_SO_BUS_NR);
printf("ti1225: Subordinate bus number %d\n", v8);
}
#if USE_INTS
irq= pci_attr_r8(devind, PCI_ILR);
pp->p_irq= irq;
printf("ti1225 using IRQ %d\n", irq);
#endif
v32= pci_attr_r32(devind, TI_LEGACY_BA);
v32 &= ~1;
if (debug)
{
printf("ti1225: PC Card 16-bit legacy-mode base address 0x%x\n",
v32);
}
if (v32 == 0)
panic("ti1225", "bad lagacy-mode base address 0x%x\n", v32);
pp->p_exca_port= v32;
if (debug)
{
v32= pci_attr_r32(devind, TI_MF_ROUTE);
printf("ti1225: Multifunction routing 0x%08x\n", v32);
}
#if USE_INTS
pp->p_hook = pp->p_irq;
r= sys_irqsetpolicy(pp->p_irq, 0, &pp->p_hook);
if (r != OK)
panic("ti1225","sys_irqsetpolicy failed", r);
#endif
/* Clear CBB_BC_INTEXCA */
v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
if (debug)
printf("ti1225: Bridge control 0x%04x\n", v16);
v16 &= ~CBB_BC_INTEXCA;
pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
if (debug)
{
v32= pci_attr_r32(devind, TI_SYSCTRL);
printf("ti1225: System Control Register 0x%08x\n", v32);
v8= pci_attr_r8(devind, TI_CARD_CTRL);
printf("ti1225: Card Control 0x%02x\n", v8);
v8= pci_attr_r8(devind, TI_DEV_CTRL);
printf("ti1225: Device Control 0x%02x\n", v8);
}
/* Enable socket interrupts */
pp->csr_ptr->csr_mask |= CM_PWRMASK | CM_CDMASK | CM_CSTSMASK;
do_int(pp);
#if USE_INTS
r= sys_irqenable(&pp->p_hook);
if (r != OK)
panic("ti1225","unable enable interrupts", r);
#endif
}
PRIVATE void map_regs(pp, base)
struct port *pp;
u32_t base;
{
int r;
vir_bytes buf_base;
buf_base= (vir_bytes)pp->buffer;
if (buf_base % I386_PAGE_SIZE)
buf_base += I386_PAGE_SIZE-(buf_base % I386_PAGE_SIZE);
pp->base_ptr= (char *)buf_base;
if (debug)
{
printf("ti1225: map_regs: using %p for %p\n",
pp->base_ptr, pp->buffer);
}
/* Clear low order bits in base */
base &= ~(u32_t)0xF;
#if 0
r= sys_vm_map(SELF, 1 /* map */, (vir_bytes)pp->base_ptr,
I386_PAGE_SIZE, (phys_bytes)base);
#else
r = ENOSYS;
#endif
if (r != OK)
panic("ti1225", "map_regs: sys_vm_map failed", r);
}
PRIVATE void do_int(pp)
struct port *pp;
{
int i, r, devind, vcc_5v, vcc_3v, vcc_Xv, vcc_Yv,
socket_5v, socket_3v, socket_Xv, socket_Yv;
clock_t t0, t1;
u32_t csr_event, csr_present, csr_control;
u8_t v8;
u16_t v16;
devind= pp->p_devind;
v8= pci_attr_r8(devind, TI_CARD_CTRL);
if (v8 & TI_CCR_IFG)
{
printf("ti1225: got functional interrupt\n");
pci_attr_w8(devind, TI_CARD_CTRL, v8);
}
if (debug)
{
printf("Socket event: 0x%x\n", pp->csr_ptr->csr_event);
printf("Socket mask: 0x%x\n", pp->csr_ptr->csr_mask);
}
csr_present= pp->csr_ptr->csr_present;
csr_control= pp->csr_ptr->csr_control;
if ((csr_present & (CP_CDETECT1|CP_CDETECT2)) != 0)
{
if (debug)
printf("do_int: no card present\n");
return;
}
if (csr_present & CP_BADVCCREQ)
{
printf("do_int: Bad Vcc request\n");
/* return; */
}
if (csr_present & CP_DATALOST)
{
/* Do we care? */
if (debug)
printf("do_int: Data lost\n");
/* return; */
}
if (csr_present & CP_NOTACARD)
{
printf("do_int: Not a card\n");
return;
}
if (debug)
{
if (csr_present & CP_CBCARD)
printf("do_int: Cardbus card detected\n");
if (csr_present & CP_16BITCARD)
printf("do_int: 16-bit card detected\n");
}
if (csr_present & CP_PWRCYCLE)
{
if (debug)
printf("do_int: powered up\n");
return;
}
vcc_5v= !!(csr_present & CP_5VCARD);
vcc_3v= !!(csr_present & CP_3VCARD);
vcc_Xv= !!(csr_present & CP_XVCARD);
vcc_Yv= !!(csr_present & CP_YVCARD);
if (debug)
{
printf("do_int: card supports:%s%s%s%s\n",
vcc_5v ? " 5V" : "", vcc_3v ? " 3V" : "",
vcc_Xv ? " X.X V" : "", vcc_Yv ? " Y.Y V" : "");
}
socket_5v= !!(csr_present & CP_5VSOCKET);
socket_3v= !!(csr_present & CP_3VSOCKET);
socket_Xv= !!(csr_present & CP_XVSOCKET);
socket_Yv= !!(csr_present & CP_YVSOCKET);
if (debug)
{
printf("do_int: socket supports:%s%s%s%s\n",
socket_5v ? " 5V" : "", socket_3v ? " 3V" : "",
socket_Xv ? " X.X V" : "", socket_Yv ? " Y.Y V" : "");
}
if (vcc_5v && socket_5v)
{
csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_5V;
pp->csr_ptr->csr_control= csr_control;
if (debug)
printf("do_int: applying 5V\n");
}
else if (vcc_3v && socket_3v)
{
csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_3V;
pp->csr_ptr->csr_control= csr_control;
if (debug)
printf("do_int: applying 3V\n");
}
else if (vcc_Xv && socket_Xv)
{
csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_XV;
pp->csr_ptr->csr_control= csr_control;
printf("do_int: applying X.X V\n");
}
else if (vcc_Yv && socket_Yv)
{
csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_YV;
pp->csr_ptr->csr_control= csr_control;
printf("do_int: applying Y.Y V\n");
}
else
{
printf("do_int: socket and card are not compatible\n");
return;
}
csr_event= pp->csr_ptr->csr_event;
if (csr_event)
{
if (debug)
printf("clearing socket event\n");
pp->csr_ptr->csr_event= csr_event;
if (debug)
{
printf("Socket event (cleared): 0x%x\n",
pp->csr_ptr->csr_event);
}
}
devind= pp->p_devind;
v8= pci_attr_r8(devind, TI_CARD_CTRL);
if (v8 & TI_CCR_IFG)
{
printf("ti1225: got functional interrupt\n", v8);
pci_attr_w8(devind, TI_CARD_CTRL, v8);
}
if (debug)
{
v8= pci_attr_r8(devind, TI_CARD_CTRL);
printf("TI_CARD_CTRL: 0x%02x\n", v8);
}
getuptime(&t0);
do {
csr_present= pp->csr_ptr->csr_present;
if (csr_present & CP_PWRCYCLE)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(100000));
if (!(csr_present & CP_PWRCYCLE))
{
printf("do_int: not powered up?\n");
return;
}
/* Reset device */
v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
v16 |= CBB_BC_CRST;
pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
/* Wait one microsecond. Is this correct? What are the specs? */
micro_delay(1);
/* Clear CBB_BC_CRST */
v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
v16 &= ~CBB_BC_CRST;
pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
/* Wait one microsecond after clearing the reset line. Is this
* correct? What are the specs?
*/
micro_delay(1);
pci_rescan_bus(pp->p_cb_busnr);
#if USE_INTS
r= sys_irqenable(&pp->p_hook);
if (r != OK)
panic("ti1225","unable enable interrupts", r);
#endif
}
PRIVATE u8_t read_exca(pp, socket, reg)
struct port *pp;
int socket;
int reg;
{
u16_t port;
port= pp->p_exca_port;
if (port == 0)
panic("ti1225", "read_exca: bad port", NO_NUM);
do_outb(port, socket * 0x40 + reg);
return do_inb(port+1);
}
PRIVATE u8_t do_inb(port_t port)
{
int r;
u32_t value;
r= sys_inb(port, &value);
if (r != OK)
panic("ti1225","sys_inb failed", r);
return value;
}
PRIVATE void do_outb(port_t port, u8_t value)
{
int r;
r= sys_outb(port, value);
if (r != OK)
panic("ti1225","sys_outb failed", r);
}
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