minix/drivers/pci/main.c
Ben Gras 2bfeeed885 drop segment from safecopy invocations
. all invocations were S or D, so can safely be dropped
	  to prepare for the segmentless world
	. still assign D to the SCP_SEG field in the message
	  to make previous kernels usable
2012-06-16 16:22:51 +00:00

603 lines
11 KiB
C

/*
main.c
*/
#include "pci.h"
struct pci_acl pci_acl[NR_DRIVERS];
static void do_init(message *mp);
static void do_first_dev(message *mp);
static void do_next_dev(message *mp);
static void do_find_dev(message *mp);
static void do_ids(message *mp);
static void do_dev_name_s(message *mp);
static void do_slot_name_s(message *mp);
static void do_set_acl(message *mp);
static void do_del_acl(message *mp);
static void do_reserve(message *mp);
static void do_attr_r8(message *mp);
static void do_attr_r16(message *mp);
static void do_attr_r32(message *mp);
static void do_attr_w8(message *mp);
static void do_attr_w16(message *mp);
static void do_attr_w32(message *mp);
static void do_get_bar(message *mp);
static void do_rescan_bus(message *mp);
static void reply(message *mp, int result);
static struct rs_pci *find_acl(int endpoint);
extern int debug;
/* SEF functions and variables. */
static void sef_local_startup(void);
int main(void)
{
int r;
message m;
int ipc_status;
/* SEF local startup. */
sef_local_startup();
for(;;)
{
r= driver_receive(ANY, &m, &ipc_status);
if (r < 0)
{
printf("PCI: driver_receive failed: %d\n", r);
break;
}
if (is_ipc_notify(ipc_status)) {
printf("PCI: got notify from %d\n", m.m_source);
/* done, get a new message */
continue;
}
switch(m.m_type)
{
case BUSC_PCI_INIT: do_init(&m); break;
case BUSC_PCI_FIRST_DEV: do_first_dev(&m); break;
case BUSC_PCI_NEXT_DEV: do_next_dev(&m); break;
case BUSC_PCI_FIND_DEV: do_find_dev(&m); break;
case BUSC_PCI_IDS: do_ids(&m); break;
case BUSC_PCI_RESERVE: do_reserve(&m); break;
case BUSC_PCI_ATTR_R8: do_attr_r8(&m); break;
case BUSC_PCI_ATTR_R16: do_attr_r16(&m); break;
case BUSC_PCI_ATTR_R32: do_attr_r32(&m); break;
case BUSC_PCI_ATTR_W8: do_attr_w8(&m); break;
case BUSC_PCI_ATTR_W16: do_attr_w16(&m); break;
case BUSC_PCI_ATTR_W32: do_attr_w32(&m); break;
case BUSC_PCI_RESCAN: do_rescan_bus(&m); break;
case BUSC_PCI_DEV_NAME_S: do_dev_name_s(&m); break;
case BUSC_PCI_SLOT_NAME_S: do_slot_name_s(&m); break;
case BUSC_PCI_SET_ACL: do_set_acl(&m); break;
case BUSC_PCI_DEL_ACL: do_del_acl(&m); break;
case BUSC_PCI_GET_BAR: do_get_bar(&m); break;
default:
printf("PCI: got message from %d, type %d\n",
m.m_source, m.m_type);
break;
}
}
return 0;
}
/*===========================================================================*
* sef_local_startup *
*===========================================================================*/
static 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();
}
static void do_init(mp)
message *mp;
{
int r;
#if DEBUG
printf("PCI: do_init: called by '%d'\n", mp->m_source);
#endif
mp->m_type= 0;
r= send(mp->m_source, mp);
if (r != 0)
printf("PCI: do_init: unable to send to %d: %d\n",
mp->m_source, r);
}
static void do_first_dev(message *mp)
{
int r, devind;
u16_t vid, did;
struct rs_pci *aclp;
aclp= find_acl(mp->m_source);
if (!aclp && debug)
printf("PCI: do_first_dev: no acl for caller %d\n",
mp->m_source);
r= pci_first_dev_a(aclp, &devind, &vid, &did);
if (r == 1)
{
mp->m1_i1= devind;
mp->m1_i2= vid;
mp->m1_i3= did;
}
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("PCI: do_first_dev: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_next_dev(message *mp)
{
int r, devind;
u16_t vid, did;
struct rs_pci *aclp;
devind= mp->m1_i1;
aclp= find_acl(mp->m_source);
r= pci_next_dev_a(aclp, &devind, &vid, &did);
if (r == 1)
{
mp->m1_i1= devind;
mp->m1_i2= vid;
mp->m1_i3= did;
}
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("PCI: do_next_dev: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_find_dev(mp)
message *mp;
{
int r, devind;
u8_t bus, dev, func;
bus= mp->m1_i1;
dev= mp->m1_i2;
func= mp->m1_i3;
r= pci_find_dev(bus, dev, func, &devind);
if (r == 1)
mp->m1_i1= devind;
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("PCI: do_find_dev: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_ids(mp)
message *mp;
{
int r, devind;
u16_t vid, did;
devind= mp->m1_i1;
r= pci_ids_s(devind, &vid, &did);
if (r != OK)
{
printf("pci:do_ids: failed for devind %d: %d\n",
devind, r);
}
mp->m1_i1= vid;
mp->m1_i2= did;
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("PCI: do_ids: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_dev_name_s(mp)
message *mp;
{
int r, name_len, len;
u16_t vid, did;
cp_grant_id_t name_gid;
char *name;
vid= mp->m7_i1;
did= mp->m7_i2;
name_len= mp->m7_i3;
name_gid= mp->m7_i4;
name= pci_dev_name(vid, did);
if (name == NULL)
{
/* No name */
r= ENOENT;
}
else
{
len= strlen(name)+1;
if (len > name_len)
len= name_len;
r= sys_safecopyto(mp->m_source, name_gid, 0, (vir_bytes)name,
len);
}
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("PCI: do_dev_name: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_slot_name_s(mp)
message *mp;
{
int r, devind, name_len, len;
cp_grant_id_t gid;
char *name;
devind= mp->m1_i1;
name_len= mp->m1_i2;
gid= mp->m1_i3;
r= pci_slot_name_s(devind, &name);
if (r != OK)
{
printf("pci:do_slot_name_s: failed for devind %d: %d\n",
devind, r);
}
if (r == OK)
{
len= strlen(name)+1;
if (len > name_len)
len= name_len;
r= sys_safecopyto(mp->m_source, gid, 0,
(vir_bytes)name, len);
}
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("PCI: do_slot_name: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_set_acl(mp)
message *mp;
{
int i, r, gid;
if (mp->m_source != RS_PROC_NR)
{
printf("PCI: do_set_acl: not from RS\n");
reply(mp, EPERM);
return;
}
for (i= 0; i<NR_DRIVERS; i++)
{
if (!pci_acl[i].inuse)
break;
}
if (i >= NR_DRIVERS)
{
printf("PCI: do_set_acl: table is full\n");
reply(mp, ENOMEM);
return;
}
gid= mp->m1_i1;
r= sys_safecopyfrom(mp->m_source, gid, 0, (vir_bytes)&pci_acl[i].acl,
sizeof(pci_acl[i].acl));
if (r != OK)
{
printf("PCI: do_set_acl: safecopyfrom failed\n");
reply(mp, r);
return;
}
pci_acl[i].inuse= 1;
if(debug)
printf("PCI: do_acl: setting ACL for %d ('%s') at entry %d\n",
pci_acl[i].acl.rsp_endpoint, pci_acl[i].acl.rsp_label,
i);
reply(mp, OK);
}
static void do_del_acl(message *mp)
{
int i, proc_nr;
if (mp->m_source != RS_PROC_NR)
{
printf("do_del_acl: not from RS\n");
reply(mp, EPERM);
return;
}
proc_nr= mp->m1_i1;
for (i= 0; i<NR_DRIVERS; i++)
{
if (!pci_acl[i].inuse)
continue;
if (pci_acl[i].acl.rsp_endpoint == proc_nr)
break;
}
if (i >= NR_DRIVERS)
{
printf("do_del_acl: nothing found for %d\n", proc_nr);
reply(mp, EINVAL);
return;
}
pci_acl[i].inuse= 0;
#if 0
printf("do_acl: deleting ACL for %d ('%s') at entry %d\n",
pci_acl[i].acl.rsp_endpoint, pci_acl[i].acl.rsp_label, i);
#endif
/* Also release all devices held by this process */
pci_release(proc_nr);
reply(mp, OK);
}
static void do_reserve(message *mp)
{
struct rs_pci *aclp;
int r, devind;
devind= mp->m1_i1;
aclp= find_acl(mp->m_source);
mp->m_type= pci_reserve_a(devind, mp->m_source, aclp);
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_reserve: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_attr_r8(mp)
message *mp;
{
int r, devind, port;
u8_t v;
devind= mp->m2_i1;
port= mp->m2_i2;
r= pci_attr_r8_s(devind, port, &v);
if (r != OK)
{
printf(
"pci:do_attr_r8: pci_attr_r8_s(%d, %d, ...) failed: %d\n",
devind, port, r);
}
mp->m2_l1= v;
mp->m_type= r;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_attr_r8: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_attr_r16(mp)
message *mp;
{
int r, devind, port;
u32_t v;
devind= mp->m2_i1;
port= mp->m2_i2;
v= pci_attr_r16(devind, port);
mp->m2_l1= v;
mp->m_type= OK;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_attr_r16: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_attr_r32(mp)
message *mp;
{
int r, devind, port;
u32_t v;
devind= mp->m2_i1;
port= mp->m2_i2;
r= pci_attr_r32_s(devind, port, &v);
if (r != OK)
{
printf(
"pci:do_attr_r32: pci_attr_r32_s(%d, %d, ...) failed: %d\n",
devind, port, r);
}
mp->m2_l1= v;
mp->m_type= OK;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_attr_r32: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_attr_w8(mp)
message *mp;
{
int r, devind, port;
u8_t v;
devind= mp->m2_i1;
port= mp->m2_i2;
v= mp->m2_l1;
pci_attr_w8(devind, port, v);
mp->m_type= OK;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_attr_w8: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_attr_w16(mp)
message *mp;
{
int r, devind, port;
u16_t v;
devind= mp->m2_i1;
port= mp->m2_i2;
v= mp->m2_l1;
pci_attr_w16(devind, port, v);
mp->m_type= OK;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_attr_w16: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_attr_w32(mp)
message *mp;
{
int r, devind, port;
u32_t v;
devind= mp->m2_i1;
port= mp->m2_i2;
v= mp->m2_l1;
pci_attr_w32(devind, port, v);
mp->m_type= OK;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_attr_w32: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_get_bar(mp)
message *mp;
{
int r, devind, port, ioflag;
u32_t base, size;
devind= mp->BUSC_PGB_DEVIND;
port= mp->BUSC_PGB_PORT;
mp->m_type= pci_get_bar_s(devind, port, &base, &size, &ioflag);
if (mp->m_type == OK)
{
mp->BUSC_PGB_BASE= base;
mp->BUSC_PGB_SIZE= size;
mp->BUSC_PGB_IOFLAG= ioflag;
}
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_get_bar: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void do_rescan_bus(mp)
message *mp;
{
int r, busnr;
busnr= mp->m2_i1;
pci_rescan_bus(busnr);
mp->m_type= OK;
r= send(mp->m_source, mp);
if (r != 0)
{
printf("do_rescan_bus: unable to send to %d: %d\n",
mp->m_source, r);
}
}
static void reply(mp, result)
message *mp;
int result;
{
int r;
message m;
m.m_type= result;
r= send(mp->m_source, &m);
if (r != 0)
printf("reply: unable to send to %d: %d\n", mp->m_source, r);
}
static struct rs_pci *find_acl(endpoint)
int endpoint;
{
int i;
/* Find ACL entry for caller */
for (i= 0; i<NR_DRIVERS; i++)
{
if (!pci_acl[i].inuse)
continue;
if (pci_acl[i].acl.rsp_endpoint == endpoint)
return &pci_acl[i].acl;
}
return NULL;
}