/*
- * The PCI Library -- Direct Configuration access via SylixOS Ports
+ * The PCI Library -- Direct Configuration access via SylixOS Ports
*
- * Copyright (c) 2018 YuJian.Gong <gongyujian@acoinfo.com>
+ * Copyright (c) 2018 YuJian.Gong <gongyujian@acoinfo.com>
*
- * Can be freely distributed and used under the terms of the GNU GPL.
+ * Can be freely distributed and used under the terms of the GNU GPL v2+.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
*/
#define _GNU_SOURCE
#include "internal.h"
-#define PCI_VENDOR_ID_IS_INVALID(vendor) (((vendor) == 0xffff) || ((vendor) == 0x0000))
-
-typedef struct {
- struct pci_access *a;
- byte *busmap;
- int bus;
-} pci_dev_scan;
-
-static int
-sylixos_pci_traversal (int (*function)(), void *arg, int min_bus, int max_bus)
-{
- int bus, dev, func;
- u8 header;
- u16 vendor;
-
- if (!function || (min_bus < 0) || (max_bus < 0))
- {
- return (PX_ERROR);
- }
-
- min_bus = (min_bus > (PCI_MAX_BUS - 1)) ? (PCI_MAX_BUS - 1) : min_bus;
- max_bus = (max_bus > (PCI_MAX_BUS - 1)) ? (PCI_MAX_BUS - 1) : max_bus;
-
- for (bus = min_bus; bus <= max_bus; bus++)
- {
- for (dev = 0; dev < PCI_MAX_SLOTS; dev++)
- {
- for (func = 0; func < PCI_MAX_FUNCTIONS; func++)
- {
- pciConfigInWord(bus, dev, func, PCI_VENDOR_ID, &vendor);
- if (PCI_VENDOR_ID_IS_INVALID(vendor))
- {
- if (func == 0)
- {
- break;
- }
- continue;
- }
-
- if (function(bus, dev, func, arg) != ERROR_NONE)
- {
- goto __out;
- }
-
- if (func == 0)
- {
- pciConfigInByte(bus, dev, func, PCI_HEADER_TYPE, &header);
- if ((header & PCI_HEADER_MULTI_FUNC) != PCI_HEADER_MULTI_FUNC)
- {
- break;
- }
- }
- }
- }
- }
-
-__out:
- return (ERROR_NONE);
-}
-
-static int
-pci_dev_list_create (int bus, int dev, int func, void *arg)
-{
- pci_dev_scan *f = (pci_dev_scan *)arg;
- struct pci_dev *d;
- u32 vd;
-
- f->busmap[bus] = 1;
- d = pci_alloc_dev(f->a);
- d->bus = bus;
- d->dev = dev;
- d->func = func;
-
- vd = pci_read_long(d, PCI_VENDOR_ID);
- d->vendor_id = vd & 0xffff;
- d->device_id = vd >> 16U;
- d->known_fields = PCI_FILL_IDENT;
- d->hdrtype = pci_read_byte(d, PCI_HEADER_TYPE) & 0x7f;
- pci_link_dev(f->a, d);
-
- return (ERROR_NONE);
-}
-
-static void
-pci_generic_scan_bus_tbl(struct pci_access *a, byte *busmap, int bus)
-{
- pci_dev_scan f;
-
- f.a = a;
- f.busmap = busmap;
- f.bus = bus;
-
- sylixos_pci_traversal(pci_dev_list_create, &f, bus, PCI_MAX_BUS);
-}
-
static void
sylixos_scan(struct pci_access *a)
{
- int se;
u8 busmap[256];
- char *env;
+ int bus;
memset(busmap, 0, sizeof(busmap));
- env = getenv(PCI_SCAN_FUNC);
- if (!env)
- {
- pci_generic_scan_bus(a, busmap, 0);
- return;
- }
-
- se = atoi(env);
- if (se)
- {
- pci_generic_scan_bus_tbl(a, busmap, 0);
- }
- else
- {
- pci_generic_scan_bus(a, busmap, 0);
- }
+ for (bus = 0; bus < PCI_MAX_BUS; bus++)
+ if (!busmap[bus])
+ pci_generic_scan_bus(a, busmap, 0, bus);
}
static void
}
a->debug("...using %s", name);
-
return 1;
}
static void
-sylixos_init(struct pci_access *a)
+sylixos_init(struct pci_access *a UNUSED)
{
- a->fd = -1;
}
static void
-sylixos_cleanup(struct pci_access *a)
+sylixos_cleanup(struct pci_access *a UNUSED)
{
- a->fd = -1;
}
static int
u32 data_dword = -1;
if (!(len == 1 || len == 2 || len == 4))
- {
- return pci_generic_block_read(d, pos, buf, len);
- }
+ return pci_generic_block_read(d, pos, buf, len);
if (pos >= 256)
- {
- return 0;
- }
+ return 0;
switch (len)
{
case 1:
ret = pciConfigInByte(d->bus, d->dev, d->func, pos, &data_byte);
if (ret != ERROR_NONE)
- {
- return (0);
- }
+ return 0;
buf[0] = (u8)data_byte;
break;
case 2:
ret = pciConfigInWord(d->bus, d->dev, d->func, pos, &data_word);
if (ret != ERROR_NONE)
- {
- return (0);
- }
+ return 0;
((u16 *) buf)[0] = cpu_to_le16(data_word);
break;
case 4:
ret = pciConfigInDword(d->bus, d->dev, d->func, pos, &data_dword);
if (ret != ERROR_NONE)
- {
- return (0);
- }
+ return 0;
((u32 *) buf)[0] = cpu_to_le32(data_dword);
break;
}
u32 data_dword;
if (!(len == 1 || len == 2 || len == 4))
- {
- return pci_generic_block_write(d, pos, buf, len);
- }
+ return pci_generic_block_write(d, pos, buf, len);
if (pos >= 256)
- {
- return 0;
- }
+ return 0;
switch (len)
{
data_byte = buf[0];
ret = pciConfigOutByte(d->bus, d->dev, d->func, pos, data_byte);
if (ret != ERROR_NONE)
- {
- return (0);
- }
+ return 0;
break;
case 2:
data_word = le16_to_cpu(((u16 *) buf)[0]);
ret = pciConfigOutWord(d->bus, d->dev, d->func, pos, data_word);
if (ret != ERROR_NONE)
- {
- return (0);
- }
+ return 0;
break;
case 4:
data_dword = le32_to_cpu(((u32 *) buf)[0]);
ret = pciConfigOutDword(d->bus, d->dev, d->func, pos, data_dword);
if (ret != ERROR_NONE)
- {
- return (0);
- }
+ return 0;
break;
}
}
struct pci_methods pm_sylixos_device = {
- "sylixos-device",
- "SylixOS /proc/pci device",
- sylixos_config, /* config */
- sylixos_detect,
- sylixos_init,
- sylixos_cleanup,
- sylixos_scan,
- pci_generic_fill_info,
- sylixos_read,
- sylixos_write,
- NULL, /* read_vpd */
- NULL, /* init_dev */
- NULL /* cleanup_dev */
+ .name = "sylixos-device",
+ .help = "SylixOS /proc/pci device",
+ .config = sylixos_config,
+ .detect = sylixos_detect,
+ .init = sylixos_init,
+ .cleanup = sylixos_cleanup,
+ .scan = sylixos_scan,
+ .fill_info = pci_generic_fill_info,
+ .read = sylixos_read,
+ .write = sylixos_write,
};
projects / pciutils.git / blobdiff