From 061282ed1107d411c90ca3a19bdb93327b5376ab Mon Sep 17 00:00:00 2001 From: phcoder Date: Thu, 22 Oct 2009 17:10:54 +0200 Subject: [PATCH] bonito impl. I/O cleanup --- bus/bonito.c | 90 ++++++++++++++++++++++++++++++++ conf/mips.rmk | 6 --- include/grub/mips/io.h | 12 ++--- include/grub/mips/yeeloong/pci.h | 58 +++++++++++++++----- 4 files changed, 140 insertions(+), 26 deletions(-) create mode 100644 bus/bonito.c diff --git a/bus/bonito.c b/bus/bonito.c new file mode 100644 index 000000000..a7a530de1 --- /dev/null +++ b/bus/bonito.c @@ -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 . + */ + +#include +#include + +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"); +} diff --git a/conf/mips.rmk b/conf/mips.rmk index f63e9bafc..19ed78237 100644 --- a/conf/mips.rmk +++ b/conf/mips.rmk @@ -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 diff --git a/include/grub/mips/io.h b/include/grub/mips/io.h index b86452c0a..dee76bde5 100644 --- a/include/grub/mips/io.h +++ b/include/grub/mips/io.h @@ -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 */ diff --git a/include/grub/mips/yeeloong/pci.h b/include/grub/mips/yeeloong/pci.h index fd6718c63..9970d6ee0 100644 --- a/include/grub/mips/yeeloong/pci.h +++ b/include/grub/mips/yeeloong/pci.h @@ -22,50 +22,80 @@ #include #include -#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 */