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enable device after configuration

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This commit is contained in:
Markus Fröschle
2013-11-11 17:08:40 +00:00
parent a1e9e74c64
commit b2677b5c8e
1 changed files with 18 additions and 10 deletions
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24
sources/pci.c
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@@ -361,7 +361,17 @@ static void pci_device_config(uint16_t bus, uint16_t device, uint16_t function)
return;
}
/*
* disable device
*/
value = swpl(pci_read_config_longword(handle, PCICSR));
pci_write_config_longword(handle, PCICSR, swpl(value));
int barnum = 0;
uint16_t command_register = 0;
descriptors = resource_descriptors[index];
for (i = 0; i < 6; i++) /* for all bars */
{
@@ -416,6 +426,8 @@ static void pci_device_config(uint16_t bus, uint16_t device, uint16_t function)
/* adjust memory adress for next turn */
mem_address += size;
command_register |= 2;
/* index to next unused resource descriptor */
barnum++;
}
@@ -440,6 +452,8 @@ static void pci_device_config(uint16_t bus, uint16_t device, uint16_t function)
io_address += size;
command_register |= 1;
barnum++;
}
}
@@ -449,15 +463,9 @@ static void pci_device_config(uint16_t bus, uint16_t device, uint16_t function)
descriptors[barnum - 1].flags |= FLG_LAST;
/*
* enable device finally
* enable device memory or I/O access
*/
value = swpl(pci_read_config_longword(handle, PCICSR));
xprintf("device 0x%02x PCICSR = 0x%08x\r\n", handle, value);
value = 0xffff0146;
pci_write_config_longword(handle, PCICSR, swpl(value));
value = swpl(pci_read_config_longword(handle, PCICSR));
xprintf("device 0x%02x PCICSR = 0x%08x\r\n", handle, value);
pci_write_config_longword(handle, PCICSR, swpw(command_register));
}
static void pci_bridge_config(uint16_t bus, uint16_t device, uint16_t function)