From: acevest <zhaoyanbai@126.com>
Date: Wed, 17 May 2023 15:51:43 +0000 (+0800)
Subject: 回退在bochs上无法正确读取PCI的代码
X-Git-Url: http://zhaoyanbai.com/repos/?a=commitdiff_plain;h=e6d10426d985251dad331d539cf95ee5aa2ba90d;p=kernel.git

回退在bochs上无法正确读取PCI的代码
---

diff --git a/Makefile b/Makefile
index 70fc756..f6e3e65 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,6 @@ endif
 
 CFLAGS		= -g -c -fno-builtin -m32 -DBUILDER='"$(shell whoami)"'
 CFLAGS     += -DFIX_SYSENTER_ESP_MODE=1
-#CFLAGS     += -DPCI_RW_ALIGN_MODE
 SYSTEMMAP	= System.map
 KERNELBIN	= KERNEL.BIN
 LINKSCRIPT	= scripts/link.ld
diff --git a/drivers/pci.c b/drivers/pci.c
index 74db154..a027ba1 100644
--- a/drivers/pci.c
+++ b/drivers/pci.c
@@ -23,7 +23,6 @@ LIST_HEAD(pci_devs);
 
 const char *pci_get_info(unsigned int classcode, unsigned int progif);
 
-#if PCI_RW_ALIGN_MODE
 int pci_read_config_byte(int cmd) {
     outl(PCI_CONFIG_CMD(cmd), PCI_ADDR);
     return inb(PCI_DATA + (PCI_GET_CMD_REG(cmd) & 3));
@@ -53,37 +52,6 @@ void pci_write_config_long(int value, int cmd) {
     outl(PCI_CONFIG_CMD(cmd), PCI_ADDR);
     outl(value, PCI_DATA);
 }
-#else
-int pci_read_config_byte(int cmd) {
-    outl(cmd, PCI_ADDR);
-    return inb(PCI_DATA);
-}
-
-int pci_read_config_word(int cmd) {
-    outl(cmd, PCI_ADDR);
-    return inw(PCI_DATA);
-}
-
-int pci_read_config_long(int cmd) {
-    outl(cmd, PCI_ADDR);
-    return inl(PCI_DATA);
-}
-
-void pci_write_config_byte(int value, int cmd) {
-    outl(cmd, PCI_ADDR);
-    outb(value & 0xFF, PCI_DATA);
-}
-
-void pci_write_config_word(int value, int cmd) {
-    outl(cmd, PCI_ADDR);
-    outw(value & 0xFFFF, PCI_DATA);
-}
-
-void pci_write_config_long(int value, int cmd) {
-    outl(cmd, PCI_ADDR);
-    outl(value, PCI_DATA);
-}
-#endif
 
 void scan_pci_bus(int bus) {
     u8 dev, devfn;
diff --git a/include/pci.h b/include/pci.h
index 4120007..d0ca66f 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -25,11 +25,8 @@
 // PCI Command
 // 这个PCI_CMD是写入PCI_ADDR的，通过bus,dev,fn,reg可以定位到某个PCI总线(可以有多条PCI总线)上的某个设备的某个功能的某个寄存器
 #define PCI_CMD(bus, dev, fn, reg) (0x80000000 | (bus << 16) | (dev << 11) | (fn << 8) | reg)
-
-#if PCI_RW_ALIGN_MODE
 #define PCI_CONFIG_CMD(cmd) (cmd & ~3)
 #define PCI_GET_CMD_REG(cmd) (cmd & 0xFF)
-#endif
 
 // PCI Device
 //  All PCI compliant devices must support the Vendor ID, Device ID, Command and Status, Revision ID, Class Code and