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bonito impl. I/O cleanup

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This commit is contained in:
phcoder 2009-10-22 17:10:54 +02:00
parent 0f8d98dad2
commit 061282ed11
4 changed files with 140 additions and 26 deletions
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90
bus/bonito.c Normal file
View file

@ -0,0 +1,90 @@
/* bonito.c - PCI bonito interface. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/pci.h>
#include <grub/misc.h>
static grub_uint32_t base_win[GRUB_MACHINE_PCI_NUM_WIN];
static const grub_size_t sizes_win[GRUB_MACHINE_PCI_NUM_WIN] =
{GRUB_MACHINE_PCI_WIN1_SIZE, GRUB_MACHINE_PCI_WIN_SIZE,
GRUB_MACHINE_PCI_WIN_SIZE};
/* Usage counters. */
static int usage_win[GRUB_MACHINE_PCI_NUM_WIN];
static grub_addr_t addr_win[GRUB_MACHINE_PCI_NUM_WIN] =
{GRUB_MACHINE_PCI_WIN1_ADDR, GRUB_MACHINE_PCI_WIN2_ADDR,
GRUB_MACHINE_PCI_WIN3_ADDR};
static inline void
write_bases (void)
{
int i;
grub_uint32_t reg = 0;
for (i = 0; i < GRUB_MACHINE_PCI_NUM_WIN; i++)
reg |= (((base_win[i] >> GRUB_MACHINE_PCI_WIN_SHIFT)
& GRUB_MACHINE_PCI_WIN_MASK)
>> (i * GRUB_MACHINE_PCI_WIN_MASK_SIZE));
GRUB_MACHINE_PCI_IO_CTRL_REG = reg;
}
void *
grub_pci_device_map_range (grub_pci_device_t dev __attribute__ ((unused)),
grub_addr_t base, grub_size_t size)
{
int i;
grub_addr_t newbase;
/* First try already used registers. */
for (i = 0; i < GRUB_MACHINE_PCI_NUM_WIN; i++)
if (usage_win[i] && base_win[i] <= base
&& base_win[i] + sizes_win[i] > base + size)
{
usage_win[i]++;
return (void *)
(addr_win[i] | (base & GRUB_MACHINE_PCI_WIN_OFFSET_MASK));
}
/* Map new register. */
newbase = base & ~GRUB_MACHINE_PCI_WIN_OFFSET_MASK;
for (i = 0; i < GRUB_MACHINE_PCI_NUM_WIN; i++)
if (!usage_win[i] && newbase <= base
&& newbase + sizes_win[i] > base + size)
{
usage_win[i]++;
base_win[i] = newbase;
write_bases ();
return (void *)
(addr_win[i] | (base & GRUB_MACHINE_PCI_WIN_OFFSET_MASK));
}
grub_fatal ("Out of PCI windows.");
}
void
grub_pci_device_unmap_range (grub_pci_device_t dev __attribute__ ((unused)),
void *mem __attribute__ ((unused)),
grub_size_t size __attribute__ ((unused)))
{
int i;
for (i = 0; i < GRUB_MACHINE_PCI_NUM_WIN; i++)
if (usage_win[i] && addr_win[i]
== (((grub_addr_t) mem) & ~GRUB_MACHINE_PCI_WIN_OFFSET_MASK))
{
usage_win[i]--;
return;
}
grub_fatal ("Tried to unmap not mapped region");
}

6
conf/mips.rmk
View file

@ -142,12 +142,6 @@ ata_mod_SOURCES = disk/ata.c
ata_mod_CFLAGS = $(COMMON_CFLAGS)
ata_mod_LDFLAGS = $(COMMON_LDFLAGS)
# For pci.mod.
pkglib_MODULES += pci.mod
pci_mod_SOURCES = bus/pci.c
pci_mod_CFLAGS = $(COMMON_CFLAGS)
pci_mod_LDFLAGS = $(COMMON_LDFLAGS)
# For lspci.mod
pkglib_MODULES += lspci.mod
lspci_mod_SOURCES = commands/lspci.c

12
include/grub/mips/io.h
View file

@ -26,37 +26,37 @@ typedef grub_addr_t grub_port_t;
static __inline unsigned char
grub_inb (grub_port_t port)
{
return *(grub_uint8_t *) port;
return *(volatile grub_uint8_t *) port;
}
static __inline unsigned short int
grub_inw (grub_port_t port)
{
return *(grub_uint16_t *) port;
return *(volatile grub_uint16_t *) port;
}
static __inline unsigned int
grub_inl (grub_port_t port)
{
return *(grub_uint32_t *) port;
return *(volatile grub_uint32_t *) port;
}
static __inline void
grub_outb (unsigned char value, grub_port_t port)
{
*(grub_uint8_t *) port = value;
*(volatile grub_uint8_t *) port = value;
}
static __inline void
grub_outw (unsigned short int value, grub_port_t port)
{
*(grub_uint16_t *) port = value;
*(volatile grub_uint16_t *) port = value;
}
static __inline void
grub_outl (unsigned int value, grub_port_t port)
{
*(grub_uint32_t *) port = value;
*(volatile grub_uint32_t *) port = value;
}
#endif /* _SYS_IO_H */

58
include/grub/mips/yeeloong/pci.h
View file

@ -22,50 +22,80 @@
#include <grub/types.h>
#include <grub/cpu/io.h>
#define GRUB_MACHINE_PCI_IOSPACE 0xbfe80000
#define GRUB_MACHINE_PCI_CONTROL_REG (*(grub_uint32_t *) 0xbfe00118)
#define GRUB_MACHINE_PCI_CONFSPACE 0xbfe80000
#define GRUB_MACHINE_PCI_CONF_CTRL_REG (*(volatile grub_uint32_t *) 0xbfe00118)
#define GRUB_MACHINE_PCI_IO_CTRL_REG (*(volatile grub_uint32_t *) 0xbfe00110)
#define GRUB_MACHINE_PCI_WIN_MASK_SIZE 6
#define GRUB_MACHINE_PCI_WIN_MASK ((1 << GRUB_MACHINE_PCI_WIN_MASK_SIZE) - 1)
/* We have 3 PCI windows. */
#define GRUB_MACHINE_PCI_NUM_WIN 3
/* Each window is 64MiB. */
#define GRUB_MACHINE_PCI_WIN_SHIFT 26
#define GRUB_MACHINE_PCI_WIN_OFFSET_MASK ((1 << GRUB_MACHINE_PCI_WIN_SHIFT) - 1)
#define GRUB_MACHINE_PCI_WIN_SIZE 0x04000000
/* Graphical acceleration takes 1 MiB away. */
#define GRUB_MACHINE_PCI_WIN1_SIZE 0x03f00000
#define GRUB_MACHINE_PCI_WIN1_ADDR 0xb0000000
#define GRUB_MACHINE_PCI_WIN2_ADDR 0xb4000000
#define GRUB_MACHINE_PCI_WIN3_ADDR 0xb8000000
static inline grub_uint32_t
grub_pci_read (grub_pci_address_t addr)
{
GRUB_MACHINE_PCI_CONTROL_REG = addr >> 16;
return *(grub_uint32_t *) (GRUB_MACHINE_PCI_IOSPACE | (addr & 0xffff));
GRUB_MACHINE_PCI_CONF_CTRL_REG = addr >> 16;
return *(volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONFSPACE
| (addr & 0xffff));
}
static inline grub_uint16_t
grub_pci_read_word (grub_pci_address_t addr)
{
GRUB_MACHINE_PCI_CONTROL_REG = addr >> 16;
return *(grub_uint16_t *) (GRUB_MACHINE_PCI_IOSPACE | (addr & 0xffff));
GRUB_MACHINE_PCI_CONF_CTRL_REG = addr >> 16;
return *(volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONFSPACE
| (addr & 0xffff));
}
static inline grub_uint8_t
grub_pci_read_byte (grub_pci_address_t addr)
{
GRUB_MACHINE_PCI_CONTROL_REG = addr >> 16;
return *(grub_uint8_t *) (GRUB_MACHINE_PCI_IOSPACE | (addr & 0xffff));
GRUB_MACHINE_PCI_CONF_CTRL_REG = addr >> 16;
return *(volatile grub_uint8_t *) (GRUB_MACHINE_PCI_CONFSPACE
| (addr & 0xffff));
}
static inline void
grub_pci_write (grub_pci_address_t addr, grub_uint32_t data)
{
GRUB_MACHINE_PCI_CONTROL_REG = addr >> 16;
*(grub_uint32_t *) (GRUB_MACHINE_PCI_IOSPACE | (addr & 0xffff)) = data;
GRUB_MACHINE_PCI_CONF_CTRL_REG = addr >> 16;
*(volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONFSPACE
| (addr & 0xffff)) = data;
}
static inline void
grub_pci_write_word (grub_pci_address_t addr, grub_uint16_t data)
{
GRUB_MACHINE_PCI_CONTROL_REG = addr >> 16;
*(grub_uint16_t *) (GRUB_MACHINE_PCI_IOSPACE | (addr & 0xffff)) = data;
GRUB_MACHINE_PCI_CONF_CTRL_REG = addr >> 16;
*(volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONFSPACE
| (addr & 0xffff)) = data;
}
static inline void
grub_pci_write_byte (grub_pci_address_t addr, grub_uint8_t data)
{
GRUB_MACHINE_PCI_CONTROL_REG = addr >> 16;
*(grub_uint8_t *) (GRUB_MACHINE_PCI_IOSPACE | (addr & 0xffff)) = data;
GRUB_MACHINE_PCI_CONF_CTRL_REG = addr >> 16;
*(volatile grub_uint8_t *) (GRUB_MACHINE_PCI_CONFSPACE
| (addr & 0xffff)) = data;
}
void *
grub_pci_device_map_range (grub_pci_device_t dev __attribute__ ((unused)),
grub_addr_t base, grub_size_t size);
void
grub_pci_device_unmap_range (grub_pci_device_t dev __attribute__ ((unused)),
void *mem,
grub_size_t size __attribute__ ((unused)));
#endif /* GRUB_MACHINE_PCI_H */