740 lines
13 KiB
C
740 lines
13 KiB
C
#include <sys/types.h>
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#include <dev/pci/pciio.h>
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#include <minix/chardriver.h>
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#include <minix/driver.h>
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#include <minix/rs.h>
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#include "pci.h"
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int debug = 0;
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struct pci_acl pci_acl[NR_DRIVERS];
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/*======================================================================*
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* Helpers *
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*======================================================================*/
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static struct rs_pci *
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find_acl(int endpoint)
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{
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int i;
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/* Find ACL entry for caller */
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for (i= 0; i<NR_DRIVERS; i++)
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{
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if (!pci_acl[i].inuse)
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continue;
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if (pci_acl[i].acl.rsp_endpoint == endpoint)
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return &pci_acl[i].acl;
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}
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return NULL;
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}
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static void
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reply(message *mp, int result)
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{
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int r;
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message m;
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m.m_type= result;
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r= ipc_send(mp->m_source, &m);
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if (r != 0)
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printf("reply: unable to send to %d: %d\n", mp->m_source, r);
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}
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static void
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do_init(message *mp)
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{
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int r;
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#if DEBUG
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printf("PCI: do_init: called by '%d'\n", mp->m_source);
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#endif
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mp->m_type= 0;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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printf("PCI: do_init: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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static void
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do_first_dev(message *mp)
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{
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int r, devind;
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u16_t vid, did;
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struct rs_pci *aclp;
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aclp= find_acl(mp->m_source);
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if (!aclp && debug)
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printf("PCI: do_first_dev: no acl for caller %d\n",
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mp->m_source);
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r= _pci_first_dev(aclp, &devind, &vid, &did);
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if (r == 1)
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{
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mp->m1_i1= devind;
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mp->m1_i2= vid;
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mp->m1_i3= did;
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}
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("PCI: do_first_dev: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_next_dev(message *mp)
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{
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int r, devind;
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u16_t vid, did;
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struct rs_pci *aclp;
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devind= mp->m1_i1;
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aclp= find_acl(mp->m_source);
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r= _pci_next_dev(aclp, &devind, &vid, &did);
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if (r == 1)
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{
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mp->m1_i1= devind;
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mp->m1_i2= vid;
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mp->m1_i3= did;
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}
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("PCI: do_next_dev: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_find_dev(message *mp)
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{
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int r, devind;
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u8_t bus, dev, func;
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bus= mp->m1_i1;
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dev= mp->m1_i2;
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func= mp->m1_i3;
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r= _pci_find_dev(bus, dev, func, &devind);
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if (r == 1)
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mp->m1_i1= devind;
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("PCI: do_find_dev: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_ids(message *mp)
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{
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int r, devind;
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u16_t vid, did;
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devind= mp->m1_i1;
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r= _pci_ids(devind, &vid, &did);
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if (r != OK)
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{
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printf("pci:do_ids: failed for devind %d: %d\n",
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devind, r);
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}
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mp->m1_i1= vid;
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mp->m1_i2= did;
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("PCI: do_ids: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_dev_name(message *mp)
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{
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int r, name_len, len;
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u16_t vid, did;
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cp_grant_id_t name_gid;
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const char *name;
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vid= mp->m7_i1;
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did= mp->m7_i2;
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name_len= mp->m7_i3;
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name_gid= mp->m7_i4;
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name= _pci_dev_name(vid, did);
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if (name == NULL)
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{
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/* No name */
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r= ENOENT;
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}
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else
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{
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len= strlen(name)+1;
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if (len > name_len)
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len= name_len;
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r= sys_safecopyto(mp->m_source, name_gid, 0, (vir_bytes)name,
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len);
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}
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("PCI: do_dev_name: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_slot_name(message *mp)
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{
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int r, devind, name_len, len;
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cp_grant_id_t gid;
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char *name;
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devind= mp->m1_i1;
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name_len= mp->m1_i2;
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gid= mp->m1_i3;
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r= _pci_slot_name(devind, &name);
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if (r != OK)
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{
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printf("pci:do_slot_name_s: failed for devind %d: %d\n",
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devind, r);
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}
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if (r == OK)
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{
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len= strlen(name)+1;
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if (len > name_len)
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len= name_len;
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r= sys_safecopyto(mp->m_source, gid, 0,
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(vir_bytes)name, len);
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}
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("PCI: do_slot_name: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_set_acl(message *mp)
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{
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int i, r, gid;
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if (mp->m_source != RS_PROC_NR)
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{
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printf("PCI: do_set_acl: not from RS\n");
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reply(mp, EPERM);
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return;
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}
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for (i= 0; i<NR_DRIVERS; i++)
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{
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if (!pci_acl[i].inuse)
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break;
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}
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if (i >= NR_DRIVERS)
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{
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printf("PCI: do_set_acl: table is full\n");
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reply(mp, ENOMEM);
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return;
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}
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gid= mp->m1_i1;
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r= sys_safecopyfrom(mp->m_source, gid, 0, (vir_bytes)&pci_acl[i].acl,
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sizeof(pci_acl[i].acl));
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if (r != OK)
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{
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printf("PCI: do_set_acl: safecopyfrom failed\n");
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reply(mp, r);
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return;
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}
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pci_acl[i].inuse= 1;
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if(debug)
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printf("PCI: do_acl: setting ACL for %d ('%s') at entry %d\n",
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pci_acl[i].acl.rsp_endpoint, pci_acl[i].acl.rsp_label,
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i);
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reply(mp, OK);
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}
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static void
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do_del_acl(message *mp)
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{
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int i, proc_nr;
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if (mp->m_source != RS_PROC_NR)
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{
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printf("do_del_acl: not from RS\n");
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reply(mp, EPERM);
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return;
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}
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proc_nr= mp->m1_i1;
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for (i= 0; i<NR_DRIVERS; i++)
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{
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if (!pci_acl[i].inuse)
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continue;
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if (pci_acl[i].acl.rsp_endpoint == proc_nr)
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break;
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}
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if (i >= NR_DRIVERS)
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{
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printf("do_del_acl: nothing found for %d\n", proc_nr);
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reply(mp, EINVAL);
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return;
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}
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pci_acl[i].inuse= 0;
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#if 0
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printf("do_acl: deleting ACL for %d ('%s') at entry %d\n",
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pci_acl[i].acl.rsp_endpoint, pci_acl[i].acl.rsp_label, i);
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#endif
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/* Also release all devices held by this process */
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_pci_release(proc_nr);
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reply(mp, OK);
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}
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static void
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do_reserve(message *mp)
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{
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struct rs_pci *aclp;
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int r, devind;
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devind= mp->m1_i1;
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aclp= find_acl(mp->m_source);
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mp->m_type= _pci_reserve(devind, mp->m_source, aclp);
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_reserve: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_attr_r8(message *mp)
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{
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int r, devind, port;
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u8_t v;
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devind= mp->m2_i1;
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port= mp->m2_i2;
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r= _pci_attr_r8(devind, port, &v);
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if (r != OK)
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{
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printf(
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"pci:do_attr_r8: pci_attr_r8(%d, %d, ...) failed: %d\n",
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devind, port, r);
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}
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mp->m2_l1= v;
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mp->m_type= r;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_attr_r8: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_attr_r16(message *mp)
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{
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int r, devind, port;
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u16_t v;
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devind= mp->m2_i1;
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port= mp->m2_i2;
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r= _pci_attr_r16(devind, port, &v);
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if (r != OK)
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{
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printf(
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"pci:do_attr_r16: pci_attr_r16(%d, %d, ...) failed: %d\n",
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devind, port, r);
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}
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mp->m2_l1= v;
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mp->m_type= OK;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_attr_r16: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_attr_r32(message *mp)
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{
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int r, devind, port;
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u32_t v;
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devind= mp->m2_i1;
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port= mp->m2_i2;
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r= _pci_attr_r32(devind, port, &v);
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if (r != OK)
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{
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printf(
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"pci:do_attr_r32: pci_attr_r32(%d, %d, ...) failed: %d\n",
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devind, port, r);
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}
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mp->m2_l1= v;
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mp->m_type= OK;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_attr_r32: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_attr_w8(message *mp)
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{
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int r, devind, port;
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u8_t v;
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devind= mp->m2_i1;
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port= mp->m2_i2;
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v= mp->m2_l1;
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_pci_attr_w8(devind, port, v);
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mp->m_type= OK;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_attr_w8: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_attr_w16(message *mp)
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{
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int r, devind, port;
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u16_t v;
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devind= mp->m2_i1;
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port= mp->m2_i2;
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v= mp->m2_l1;
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_pci_attr_w16(devind, port, v);
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mp->m_type= OK;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_attr_w16: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_attr_w32(message *mp)
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{
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int r, devind, port;
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u32_t v;
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devind= mp->m2_i1;
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port= mp->m2_i2;
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v= mp->m2_l1;
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_pci_attr_w32(devind, port, v);
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mp->m_type= OK;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_attr_w32: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_get_bar(message *mp)
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{
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int r, devind, port, ioflag;
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u32_t base, size;
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devind= mp->m_lsys_pci_busc_get_bar.devind;
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port= mp->m_lsys_pci_busc_get_bar.port;
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mp->m_type= _pci_get_bar(devind, port, &base, &size, &ioflag);
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if (mp->m_type == OK)
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{
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mp->m_pci_lsys_busc_get_bar.base= base;
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mp->m_pci_lsys_busc_get_bar.size= size;
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mp->m_pci_lsys_busc_get_bar.flags= ioflag;
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}
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_get_bar: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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static void
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do_rescan_bus(message *mp)
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{
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int r, busnr;
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busnr= mp->m2_i1;
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_pci_rescan_bus(busnr);
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mp->m_type= OK;
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r= ipc_send(mp->m_source, mp);
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if (r != 0)
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{
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printf("do_rescan_bus: unable to send to %d: %d\n",
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mp->m_source, r);
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}
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}
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/*======================================================================*
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* CharDriver Callbacks *
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*======================================================================*/
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static int
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pci_open(devminor_t UNUSED(minor), int UNUSED(access),
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endpoint_t UNUSED(user_endpt))
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{
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return OK;
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}
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static int
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pci_close(devminor_t UNUSED(minor))
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{
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return OK;
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}
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static int
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pci_ioctl(devminor_t minor, unsigned long request, endpoint_t endpt,
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cp_grant_id_t grant, int flags, endpoint_t user_endpt, cdev_id_t id)
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{
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int devind;
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int r = ENOTTY;
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switch(request)
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{
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case PCI_IOC_BDF_CFGREAD:
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{
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struct pciio_bdf_cfgreg bdf;
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if ((r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes)&bdf,
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sizeof(bdf))) != OK)
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break;
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r = _pci_find_dev(bdf.bus, bdf.device, bdf.function, &devind);
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if (r != 1) {
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r = EINVAL;
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break;
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}
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if ((r = _pci_attr_r32(devind, bdf.cfgreg.reg,
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&bdf.cfgreg.val)) != OK)
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break;
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r = sys_safecopyto(endpt, grant, 0, (vir_bytes)&bdf,
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sizeof(bdf));
|
|
break;
|
|
}
|
|
case PCI_IOC_BDF_CFGWRITE:
|
|
{
|
|
struct pciio_bdf_cfgreg bdf;
|
|
|
|
if ((r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes)&bdf,
|
|
sizeof(bdf))) != OK)
|
|
break;
|
|
|
|
r = _pci_find_dev(bdf.bus, bdf.device, bdf.function, &devind);
|
|
if (r != 1) {
|
|
r = EINVAL;
|
|
break;
|
|
}
|
|
|
|
_pci_attr_w32(devind, bdf.cfgreg.reg, bdf.cfgreg.val);
|
|
r = OK;
|
|
break;
|
|
}
|
|
case PCI_IOC_BUSINFO:
|
|
break;
|
|
case PCI_IOC_MAP:
|
|
{
|
|
struct pciio_map map;
|
|
struct minix_mem_range mr;
|
|
|
|
if ((r = sys_safecopyfrom(endpt, grant, 0,
|
|
(vir_bytes)&map, sizeof(map))) != OK)
|
|
break;
|
|
|
|
#if 1
|
|
mr.mr_base = map.phys_offset;
|
|
mr.mr_limit = map.phys_offset + map.size - 1;
|
|
|
|
r = sys_privctl(user_endpt, SYS_PRIV_ADD_MEM, &mr);
|
|
if (r != OK)
|
|
{
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
map.vaddr_ret = vm_map_phys(user_endpt,
|
|
(void *)map.phys_offset, map.size);
|
|
r = sys_safecopyto(endpt, grant, 0, (vir_bytes)&map,
|
|
sizeof(map));
|
|
break;
|
|
}
|
|
case PCI_IOC_UNMAP:
|
|
{
|
|
struct pciio_map map;
|
|
|
|
if ((r = sys_safecopyfrom(endpt, grant, 0,
|
|
(vir_bytes)&map, sizeof(map))) != OK)
|
|
break;
|
|
|
|
r = vm_unmap_phys(user_endpt, map.vaddr, map.size);
|
|
break;
|
|
}
|
|
case PCI_IOC_RESERVE:
|
|
{
|
|
struct pciio_acl acl;
|
|
|
|
if ((r = sys_safecopyfrom(endpt, grant, 0,
|
|
(vir_bytes)&acl, sizeof(acl))) != OK)
|
|
break;
|
|
|
|
r = _pci_find_dev(acl.bus, acl.device, acl.function, &devind);
|
|
if (r != 1) {
|
|
r = EINVAL;
|
|
break;
|
|
}
|
|
|
|
r = _pci_grant_access(devind, user_endpt);
|
|
break;
|
|
}
|
|
case PCI_IOC_RELEASE:
|
|
{
|
|
struct pciio_acl acl;
|
|
|
|
if ((r = sys_safecopyfrom(endpt, grant, 0,
|
|
(vir_bytes)&acl, sizeof(acl))) != OK)
|
|
break;
|
|
|
|
r = _pci_find_dev(acl.bus, acl.device, acl.function, &devind);
|
|
if (r != 1) {
|
|
r = EINVAL;
|
|
break;
|
|
}
|
|
|
|
_pci_release(endpt);
|
|
r = OK;
|
|
|
|
break;
|
|
}
|
|
case PCI_IOC_CFGREAD:
|
|
case PCI_IOC_CFGWRITE:
|
|
default:
|
|
r = ENOTTY;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static void
|
|
pci_other(message *m, int ipc_status)
|
|
{
|
|
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(m); break;
|
|
case BUSC_PCI_SLOT_NAME_S: do_slot_name(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: unhandled message from %d, type %d\n",
|
|
m->m_source, m->m_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static struct chardriver driver =
|
|
{
|
|
.cdr_open = pci_open,
|
|
.cdr_close = pci_close,
|
|
.cdr_ioctl = pci_ioctl,
|
|
.cdr_other = pci_other,
|
|
};
|
|
|
|
/*======================================================================*
|
|
* SEF Callbacks *
|
|
*======================================================================*/
|
|
/* NOTE: sef_cb_init is in pci.c. */
|
|
static void
|
|
sef_local_startup(void)
|
|
{
|
|
/*
|
|
* Register init callbacks. Use the same function for all event types
|
|
*/
|
|
sef_setcb_init_fresh(sef_cb_init);
|
|
sef_setcb_init_restart(sef_cb_init);
|
|
|
|
/* Let SEF perform startup. */
|
|
sef_startup();
|
|
}
|
|
|
|
/*======================================================================*
|
|
* main *
|
|
*======================================================================*/
|
|
int
|
|
main(void)
|
|
{
|
|
/*
|
|
* Perform initialization.
|
|
*/
|
|
sef_local_startup();
|
|
|
|
/*
|
|
* Run the main loop.
|
|
*/
|
|
chardriver_task(&driver);
|
|
return OK;
|
|
}
|