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@@ -1,5 +1,8 @@
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/*
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/*
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* IXP PCI Init
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* IXP PCI Init
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+ *
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+ * (C) Copyright 2011
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+ * Michael Schwingen, michael@schwingen.org
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* (C) Copyright 2004 eslab.whut.edu.cn
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* (C) Copyright 2004 eslab.whut.edu.cn
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* Yue Hu(huyue_whut@yahoo.com.cn), Ligong Xue(lgxue@hotmail.com)
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* Yue Hu(huyue_whut@yahoo.com.cn), Ligong Xue(lgxue@hotmail.com)
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*
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*
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@@ -22,7 +25,6 @@
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* MA 02111-1307 USA
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* MA 02111-1307 USA
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*/
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*/
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-
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#include <common.h>
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <asm/io.h>
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@@ -30,542 +32,336 @@
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#include <asm/arch/ixp425.h>
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#include <asm/arch/ixp425.h>
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#include <asm/arch/ixp425pci.h>
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#include <asm/arch/ixp425pci.h>
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-static void non_prefetch_read (unsigned int addr, unsigned int cmd,
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- unsigned int *data);
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-static void non_prefetch_write (unsigned int addr, unsigned int cmd,
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- unsigned int data);
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-static void configure_pins (void);
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-static void sys_pci_gpio_clock_config (void);
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-static void pci_bus_scan (void);
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-static int pci_device_exists (unsigned int deviceNo);
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-static void sys_pci_bar_info_get (unsigned int devnum, unsigned int bus,
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- unsigned int dev, unsigned int func);
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-static void sys_pci_device_bars_write (void);
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-static void calc_bars (PciBar * Bars[], unsigned int nBars,
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- unsigned int startAddr);
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+static void non_prefetch_read(unsigned int addr, unsigned int cmd,
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+ unsigned int *data);
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+static void non_prefetch_write(unsigned int addr, unsigned int cmd,
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+ unsigned int data);
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+
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+/*define the sub vendor and subsystem to be used */
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+#define IXP425_PCI_SUB_VENDOR_SYSTEM 0x00000000
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#define PCI_MEMORY_BUS 0x00000000
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#define PCI_MEMORY_BUS 0x00000000
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-#define PCI_MEMORY_PHY 0x48000000
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+#define PCI_MEMORY_PHY 0x00000000
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#define PCI_MEMORY_SIZE 0x04000000
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#define PCI_MEMORY_SIZE 0x04000000
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-#define PCI_MEM_BUS 0x40000000
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+#define PCI_MEM_BUS 0x48000000
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#define PCI_MEM_PHY 0x00000000
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#define PCI_MEM_PHY 0x00000000
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#define PCI_MEM_SIZE 0x04000000
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#define PCI_MEM_SIZE 0x04000000
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-#define PCI_IO_BUS 0x40000000
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-#define PCI_IO_PHY 0x50000000
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-#define PCI_IO_SIZE 0x10000000
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+#define PCI_IO_BUS 0x00000000
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+#define PCI_IO_PHY 0x00000000
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+#define PCI_IO_SIZE 0x00010000
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+
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+/* build address value for config sycle */
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+static unsigned int pci_config_addr(pci_dev_t bdf, unsigned int reg)
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+{
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+ unsigned int bus = PCI_BUS(bdf);
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+ unsigned int dev = PCI_DEV(bdf);
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+ unsigned int func = PCI_FUNC(bdf);
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+ unsigned int addr;
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+
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+ if (bus) { /* secondary bus, use type 1 config cycle */
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+ addr = bdf | (reg & ~3) | 1;
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+ } else {
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+ /*
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+ primary bus, type 0 config cycle. address bits 31:28
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+ specify the device 10:8 specify the function
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+ */
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+ addr = BIT((31 - dev)) | (func << 8) | (reg & ~3);
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+ }
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+
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+ return addr;
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+}
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+
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+static int pci_config_status(void)
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+{
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+ unsigned int regval;
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-struct pci_controller hose;
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+ regval = readl(PCI_CSR_BASE + PCI_ISR_OFFSET);
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+ if ((regval & PCI_ISR_PFE) == 0)
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+ return OK;
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-unsigned int nDevices;
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-unsigned int nMBars;
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-unsigned int nIOBars;
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-PciBar *memBars[IXP425_PCI_MAX_BAR];
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-PciBar *ioBars[IXP425_PCI_MAX_BAR];
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-PciDevice devices[IXP425_PCI_MAX_FUNC_ON_BUS];
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+ /* no device present, make sure that the master abort bit is reset */
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+ writel(PCI_ISR_PFE, PCI_CSR_BASE + PCI_ISR_OFFSET);
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+ return ERROR;
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+}
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-int pci_read_config_dword (pci_dev_t dev, int where, unsigned int *val)
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+static int pci_ixp_hose_read_config_dword(struct pci_controller *hose,
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+ pci_dev_t bdf, int where, unsigned int *val)
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{
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{
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unsigned int retval;
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unsigned int retval;
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unsigned int addr;
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unsigned int addr;
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+ int stat;
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- /*address bits 31:28 specify the device 10:8 specify the function */
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+ debug("pci_ixp_hose_read_config_dword: bdf %x, reg %x", bdf, where);
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/*Set the address to be read */
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/*Set the address to be read */
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- addr = BIT ((31 - dev)) | (where & ~3);
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- non_prefetch_read (addr, NP_CMD_CONFIGREAD, &retval);
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-
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+ addr = pci_config_addr(bdf, where);
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+ non_prefetch_read(addr, NP_CMD_CONFIGREAD, &retval);
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*val = retval;
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*val = retval;
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- return (OK);
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+ stat = pci_config_status();
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+ if (stat < 0)
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+ *val = -1;
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+ debug("-> val %x, status %x\n", *val, stat);
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+ return stat;
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}
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}
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-int pci_read_config_word (pci_dev_t dev, int where, unsigned short *val)
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+static int pci_ixp_hose_read_config_word(struct pci_controller *hose,
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+ pci_dev_t bdf, int where, unsigned short *val)
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{
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{
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unsigned int n;
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unsigned int n;
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unsigned int retval;
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unsigned int retval;
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unsigned int addr;
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unsigned int addr;
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unsigned int byteEnables;
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unsigned int byteEnables;
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+ int stat;
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+ debug("pci_ixp_hose_read_config_word: bdf %x, reg %x", bdf, where);
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n = where % 4;
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n = where % 4;
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/*byte enables are 4 bits active low, the position of each
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/*byte enables are 4 bits active low, the position of each
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bit maps to the byte that it enables */
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bit maps to the byte that it enables */
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byteEnables =
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byteEnables =
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- (~(BIT (n) | BIT ((n + 1)))) &
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+ (~(BIT(n) | BIT((n + 1)))) &
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IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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- /*address bits 31:28 specify the device 10:8 specify the function */
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/*Set the address to be read */
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/*Set the address to be read */
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- addr = BIT ((31 - dev)) | (where & ~3);
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- non_prefetch_read (addr, byteEnables | NP_CMD_CONFIGREAD, &retval);
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+ addr = pci_config_addr(bdf, where);
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+ non_prefetch_read(addr, byteEnables | NP_CMD_CONFIGREAD, &retval);
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/*Pick out the word we are interested in */
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/*Pick out the word we are interested in */
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- *val = (retval >> (8 * n));
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+ *val = retval >> (8 * n);
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- return (OK);
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+ stat = pci_config_status();
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+ if (stat < 0)
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+ *val = -1;
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+ debug("-> val %x, status %x\n", *val, stat);
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+ return stat;
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}
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}
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-int pci_read_config_byte (pci_dev_t dev, int where, unsigned char *val)
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+static int pci_ixp_hose_read_config_byte(struct pci_controller *hose,
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+ pci_dev_t bdf, int where, unsigned char *val)
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{
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{
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unsigned int retval;
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unsigned int retval;
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unsigned int n;
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unsigned int n;
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unsigned int byteEnables;
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unsigned int byteEnables;
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unsigned int addr;
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unsigned int addr;
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+ int stat;
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+ debug("pci_ixp_hose_read_config_byte: bdf %x, reg %x", bdf, where);
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n = where % 4;
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n = where % 4;
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/*byte enables are 4 bits, active low, the position of each
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/*byte enables are 4 bits, active low, the position of each
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bit maps to the byte that it enables */
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bit maps to the byte that it enables */
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- byteEnables = (~BIT (n)) & IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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+ byteEnables = (~BIT(n)) & IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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- /*address bits 31:28 specify the device, 10:8 specify the function */
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/*Set the address to be read */
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/*Set the address to be read */
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- addr = BIT ((31 - dev)) | (where & ~3);
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- non_prefetch_read (addr, byteEnables | NP_CMD_CONFIGREAD, &retval);
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+ addr = pci_config_addr(bdf, where);
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+ non_prefetch_read(addr, byteEnables | NP_CMD_CONFIGREAD, &retval);
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/*Pick out the byte we are interested in */
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/*Pick out the byte we are interested in */
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- *val = (retval >> (8 * n));
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+ *val = retval >> (8 * n);
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- return (OK);
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+ stat = pci_config_status();
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+ if (stat < 0)
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+ *val = -1;
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+ debug("-> val %x, status %x\n", *val, stat);
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+ return stat;
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}
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}
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-int pci_write_config_byte (pci_dev_t dev, int where, unsigned char val)
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+static int pci_ixp_hose_write_config_byte(struct pci_controller *hose,
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+ pci_dev_t bdf, int where, unsigned char val)
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{
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{
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unsigned int addr;
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unsigned int addr;
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unsigned int byteEnables;
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unsigned int byteEnables;
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unsigned int n;
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unsigned int n;
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unsigned int ldata;
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unsigned int ldata;
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+ int stat;
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+ debug("pci_ixp_hose_write_config_byte: bdf %x, reg %x, val %x",
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+ bdf, where, val);
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n = where % 4;
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n = where % 4;
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/*byte enables are 4 bits active low, the position of each
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/*byte enables are 4 bits active low, the position of each
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bit maps to the byte that it enables */
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bit maps to the byte that it enables */
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- byteEnables = (~BIT (n)) & IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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+ byteEnables = (~BIT(n)) & IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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ldata = val << (8 * n);
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ldata = val << (8 * n);
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- /*address bits 31:28 specify the device 10:8 specify the function */
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/*Set the address to be written */
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/*Set the address to be written */
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- addr = BIT ((31 - dev)) | (where & ~3);
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- non_prefetch_write (addr, byteEnables | NP_CMD_CONFIGWRITE, ldata);
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+ addr = pci_config_addr(bdf, where);
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+ non_prefetch_write(addr, byteEnables | NP_CMD_CONFIGWRITE, ldata);
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- return (OK);
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+ stat = pci_config_status();
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+ debug("-> status %x\n", stat);
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+ return stat;
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}
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}
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-int pci_write_config_word (pci_dev_t dev, int where, unsigned short val)
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+static int pci_ixp_hose_write_config_word(struct pci_controller *hose,
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+ pci_dev_t bdf, int where, unsigned short val)
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{
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{
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unsigned int addr;
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unsigned int addr;
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unsigned int byteEnables;
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unsigned int byteEnables;
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unsigned int n;
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unsigned int n;
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unsigned int ldata;
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unsigned int ldata;
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+ int stat;
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+ debug("pci_ixp_hose_write_config_word: bdf %x, reg %x, val %x",
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+ bdf, where, val);
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n = where % 4;
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n = where % 4;
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/*byte enables are 4 bits active low, the position of each
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/*byte enables are 4 bits active low, the position of each
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bit maps to the byte that it enables */
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bit maps to the byte that it enables */
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byteEnables =
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byteEnables =
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- (~(BIT (n) | BIT ((n + 1)))) &
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+ (~(BIT(n) | BIT((n + 1)))) &
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IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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byteEnables = byteEnables << PCI_NP_CBE_BESL;
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ldata = val << (8 * n);
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ldata = val << (8 * n);
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- /*address bits 31:28 specify the device 10:8 specify the function */
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/*Set the address to be written */
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/*Set the address to be written */
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- addr = BIT (31 - dev) | (where & ~3);
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- non_prefetch_write (addr, byteEnables | NP_CMD_CONFIGWRITE, ldata);
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+ addr = pci_config_addr(bdf, where);
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+ non_prefetch_write(addr, byteEnables | NP_CMD_CONFIGWRITE, ldata);
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- return (OK);
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+ stat = pci_config_status();
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+ debug("-> status %x\n", stat);
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+ return stat;
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}
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}
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-int pci_write_config_dword (pci_dev_t dev, int where, unsigned int val)
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+static int pci_ixp_hose_write_config_dword(struct pci_controller *hose,
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+ pci_dev_t bdf, int where, unsigned int val)
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{
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{
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unsigned int addr;
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unsigned int addr;
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+ int stat;
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- /*address bits 31:28 specify the device 10:8 specify the function */
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+ debug("pci_ixp_hose_write_config_dword: bdf %x, reg %x, val %x",
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+ bdf, where, val);
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/*Set the address to be written */
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/*Set the address to be written */
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- addr = BIT (31 - dev) | (where & ~3);
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- non_prefetch_write (addr, NP_CMD_CONFIGWRITE, val);
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+ addr = pci_config_addr(bdf, where);
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+ non_prefetch_write(addr, NP_CMD_CONFIGWRITE, val);
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- return (OK);
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+ stat = pci_config_status();
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+ debug("-> status %x\n", stat);
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+ return stat;
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}
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}
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-void non_prefetch_read (unsigned int addr,
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- unsigned int cmd, unsigned int *data)
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+static void non_prefetch_read(unsigned int addr,
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+ unsigned int cmd, unsigned int *data)
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{
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{
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- REG_WRITE (PCI_CSR_BASE, PCI_NP_AD_OFFSET, addr);
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+ writel(addr, PCI_CSR_BASE + PCI_NP_AD_OFFSET);
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/*set up and execute the read */
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/*set up and execute the read */
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- REG_WRITE (PCI_CSR_BASE, PCI_NP_CBE_OFFSET, cmd);
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+ writel(cmd, PCI_CSR_BASE + PCI_NP_CBE_OFFSET);
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/*The result of the read is now in np_rdata */
|
|
/*The result of the read is now in np_rdata */
|
|
- REG_READ (PCI_CSR_BASE, PCI_NP_RDATA_OFFSET, *data);
|
|
|
|
|
|
+ *data = readl(PCI_CSR_BASE + PCI_NP_RDATA_OFFSET);
|
|
|
|
|
|
return;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
-void non_prefetch_write (unsigned int addr,
|
|
|
|
- unsigned int cmd, unsigned int data)
|
|
|
|
|
|
+static void non_prefetch_write(unsigned int addr,
|
|
|
|
+ unsigned int cmd, unsigned int data)
|
|
{
|
|
{
|
|
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_NP_AD_OFFSET, addr);
|
|
|
|
|
|
+ writel(addr, PCI_CSR_BASE + PCI_NP_AD_OFFSET);
|
|
/*set up the write */
|
|
/*set up the write */
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_NP_CBE_OFFSET, cmd);
|
|
|
|
|
|
+ writel(cmd, PCI_CSR_BASE + PCI_NP_CBE_OFFSET);
|
|
/*Execute the write by writing to NP_WDATA */
|
|
/*Execute the write by writing to NP_WDATA */
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_NP_WDATA_OFFSET, data);
|
|
|
|
|
|
+ writel(data, PCI_CSR_BASE + PCI_NP_WDATA_OFFSET);
|
|
|
|
|
|
return;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
-/*
|
|
|
|
- * PCI controller config registers are accessed through these functions
|
|
|
|
- * i.e. these allow us to set up our own BARs etc.
|
|
|
|
- */
|
|
|
|
-void crp_read (unsigned int offset, unsigned int *data)
|
|
|
|
|
|
+static void crp_write(unsigned int offset, unsigned int data)
|
|
{
|
|
{
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_CRP_AD_CBE_OFFSET, offset);
|
|
|
|
- REG_READ (PCI_CSR_BASE, PCI_CRP_RDATA_OFFSET, *data);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-void crp_write (unsigned int offset, unsigned int data)
|
|
|
|
-{
|
|
|
|
- /*The CRP address register bit 16 indicates that we want to do a write */
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_CRP_AD_CBE_OFFSET,
|
|
|
|
- PCI_CRP_WRITE | offset);
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_CRP_WDATA_OFFSET, data);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/*struct pci_controller *hose*/
|
|
|
|
-void pci_ixp_init (struct pci_controller *hose)
|
|
|
|
-{
|
|
|
|
- unsigned int regval;
|
|
|
|
-
|
|
|
|
- hose->first_busno = 0;
|
|
|
|
- hose->last_busno = 0x00;
|
|
|
|
-
|
|
|
|
- /* System memory space */
|
|
|
|
- pci_set_region (hose->regions + 0,
|
|
|
|
- PCI_MEMORY_BUS,
|
|
|
|
- PCI_MEMORY_PHY, PCI_MEMORY_SIZE, PCI_REGION_SYS_MEMORY);
|
|
|
|
-
|
|
|
|
- /* PCI memory space */
|
|
|
|
- pci_set_region (hose->regions + 1,
|
|
|
|
- PCI_MEM_BUS,
|
|
|
|
- PCI_MEM_PHY, PCI_MEM_SIZE, PCI_REGION_MEM);
|
|
|
|
- /* PCI I/O space */
|
|
|
|
- pci_set_region (hose->regions + 2,
|
|
|
|
- PCI_IO_BUS, PCI_IO_PHY, PCI_IO_SIZE, PCI_REGION_IO);
|
|
|
|
-
|
|
|
|
- hose->region_count = 3;
|
|
|
|
-
|
|
|
|
- pci_register_hose (hose);
|
|
|
|
-
|
|
|
|
-/*
|
|
|
|
- ==========================================================
|
|
|
|
- Init IXP PCI
|
|
|
|
- ==========================================================
|
|
|
|
-*/
|
|
|
|
- REG_READ (PCI_CSR_BASE, PCI_CSR_OFFSET, regval);
|
|
|
|
- regval |= 1 << 2;
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_CSR_OFFSET, regval);
|
|
|
|
-
|
|
|
|
- configure_pins ();
|
|
|
|
-
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPOUTR, regval);
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPOUTR, regval & (~(1 << 13)));
|
|
|
|
- udelay (533);
|
|
|
|
- sys_pci_gpio_clock_config ();
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_INTEN_OFFSET, 0);
|
|
|
|
- udelay (100);
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPOUTR, regval);
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPOUTR, regval | (1 << 13));
|
|
|
|
- udelay (533);
|
|
|
|
- crp_write (PCI_CFG_BASE_ADDRESS_0, IXP425_PCI_BAR_0_DEFAULT);
|
|
|
|
- crp_write (PCI_CFG_BASE_ADDRESS_1, IXP425_PCI_BAR_1_DEFAULT);
|
|
|
|
- crp_write (PCI_CFG_BASE_ADDRESS_2, IXP425_PCI_BAR_2_DEFAULT);
|
|
|
|
- crp_write (PCI_CFG_BASE_ADDRESS_3, IXP425_PCI_BAR_3_DEFAULT);
|
|
|
|
- crp_write (PCI_CFG_BASE_ADDRESS_4, IXP425_PCI_BAR_4_DEFAULT);
|
|
|
|
- crp_write (PCI_CFG_BASE_ADDRESS_5, IXP425_PCI_BAR_5_DEFAULT);
|
|
|
|
- /*Setup PCI-AHB and AHB-PCI address mappings */
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_AHBMEMBASE_OFFSET,
|
|
|
|
- IXP425_PCI_AHBMEMBASE_DEFAULT);
|
|
|
|
-
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_AHBIOBASE_OFFSET,
|
|
|
|
- IXP425_PCI_AHBIOBASE_DEFAULT);
|
|
|
|
-
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_PCIMEMBASE_OFFSET,
|
|
|
|
- IXP425_PCI_PCIMEMBASE_DEFAULT);
|
|
|
|
-
|
|
|
|
- crp_write (PCI_CFG_SUB_VENDOR_ID, IXP425_PCI_SUB_VENDOR_SYSTEM);
|
|
|
|
-
|
|
|
|
- REG_READ (PCI_CSR_BASE, PCI_CSR_OFFSET, regval);
|
|
|
|
- regval |= PCI_CSR_IC | PCI_CSR_ABE | PCI_CSR_PDS;
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_CSR_OFFSET, regval);
|
|
|
|
- crp_write (PCI_CFG_COMMAND, PCI_CFG_CMD_MAE | PCI_CFG_CMD_BME);
|
|
|
|
- udelay (1000);
|
|
|
|
-
|
|
|
|
- pci_write_config_word (0, PCI_CFG_COMMAND, INITIAL_PCI_CMD);
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_ISR_OFFSET, PCI_ISR_PSE
|
|
|
|
- | PCI_ISR_PFE | PCI_ISR_PPE | PCI_ISR_AHBE);
|
|
|
|
-#ifdef CONFIG_PCI_SCAN_SHOW
|
|
|
|
- printf ("Device bus dev func deviceID vendorID \n");
|
|
|
|
-#endif
|
|
|
|
- pci_bus_scan ();
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-void configure_pins (void)
|
|
|
|
-{
|
|
|
|
- unsigned int regval;
|
|
|
|
-
|
|
|
|
- /* Disable clock on GPIO PIN 14 */
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPCLKR, regval);
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPCLKR, regval & (~(1 << 8)));
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPCLKR, regval);
|
|
|
|
-
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPOER, regval);
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPOER,
|
|
|
|
- (((~(3 << 13)) & regval) | (0xf << 8)));
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPOER, regval);
|
|
|
|
-
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPIT2R, regval);
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPIT2R,
|
|
|
|
- (regval &
|
|
|
|
- ((0x1 << 9) | (0x1 << 6) | (0x1 << 3) | 0x1)));
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPIT2R, regval);
|
|
|
|
-
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPISR, regval);
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPISR, (regval | (0xf << 8)));
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPISR, regval);
|
|
|
|
|
|
+ /*
|
|
|
|
+ * The CRP address register bit 16 indicates that we want to do a
|
|
|
|
+ * write
|
|
|
|
+ */
|
|
|
|
+ writel(PCI_CRP_WRITE | offset, PCI_CSR_BASE + PCI_CRP_AD_CBE_OFFSET);
|
|
|
|
+ writel(data, PCI_CSR_BASE + PCI_CRP_WDATA_OFFSET);
|
|
}
|
|
}
|
|
|
|
|
|
-void sys_pci_gpio_clock_config (void)
|
|
|
|
|
|
+void pci_ixp_init(struct pci_controller *hose)
|
|
{
|
|
{
|
|
- unsigned int regval;
|
|
|
|
-
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPCLKR, regval);
|
|
|
|
- regval |= 0x1 << 4;
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPCLKR, regval);
|
|
|
|
- READ_GPIO_REG (IXP425_GPIO_GPCLKR, regval);
|
|
|
|
- regval |= 0x1 << 8;
|
|
|
|
- WRITE_GPIO_REG (IXP425_GPIO_GPCLKR, regval);
|
|
|
|
-}
|
|
|
|
|
|
+ unsigned int csr;
|
|
|
|
|
|
-void pci_bus_scan (void)
|
|
|
|
-{
|
|
|
|
- unsigned int bus = 0, dev, func = 0;
|
|
|
|
- unsigned short data16;
|
|
|
|
- unsigned int data32;
|
|
|
|
- unsigned char intPin;
|
|
|
|
-
|
|
|
|
- /* Assign first device to ourselves */
|
|
|
|
- devices[0].bus = 0;
|
|
|
|
- devices[0].device = 0;
|
|
|
|
- devices[0].func = 0;
|
|
|
|
-
|
|
|
|
- crp_read (PCI_CFG_VENDOR_ID, &data32);
|
|
|
|
-
|
|
|
|
- devices[0].vendor_id = data32 & IXP425_PCI_BOTTOM_WORD_OF_LONG_MASK;
|
|
|
|
- devices[0].device_id = data32 >> 16;
|
|
|
|
- devices[0].error = FALSE;
|
|
|
|
- devices[0].bar[NO_BAR].size = 0; /*dummy - required */
|
|
|
|
-
|
|
|
|
- nDevices = 1;
|
|
|
|
-
|
|
|
|
- nMBars = 0;
|
|
|
|
- nIOBars = 0;
|
|
|
|
-
|
|
|
|
- for (dev = 0; dev < IXP425_PCI_MAX_DEV; dev++) {
|
|
|
|
-
|
|
|
|
- /*Check whether a device is present */
|
|
|
|
- if (pci_device_exists (dev) != TRUE) {
|
|
|
|
-
|
|
|
|
- /*Clear error bits in ISR, write 1 to clear */
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_ISR_OFFSET, PCI_ISR_PSE
|
|
|
|
- | PCI_ISR_PFE | PCI_ISR_PPE |
|
|
|
|
- PCI_ISR_AHBE);
|
|
|
|
- continue;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /*A device is present, add an entry to the array */
|
|
|
|
- devices[nDevices].bus = bus;
|
|
|
|
- devices[nDevices].device = dev;
|
|
|
|
- devices[nDevices].func = func;
|
|
|
|
-
|
|
|
|
- pci_read_config_word (dev, PCI_CFG_VENDOR_ID, &data16);
|
|
|
|
-
|
|
|
|
- devices[nDevices].vendor_id = data16;
|
|
|
|
-
|
|
|
|
- pci_read_config_word (dev, PCI_CFG_DEVICE_ID, &data16);
|
|
|
|
- devices[nDevices].device_id = data16;
|
|
|
|
-
|
|
|
|
- /*The device is functioning correctly, set error to FALSE */
|
|
|
|
- devices[nDevices].error = FALSE;
|
|
|
|
-
|
|
|
|
- /*Figure out what BARs are on this device */
|
|
|
|
- sys_pci_bar_info_get (nDevices, bus, dev, func);
|
|
|
|
- /*Figure out what INTX# line the card uses */
|
|
|
|
- pci_read_config_byte (dev, PCI_CFG_DEV_INT_PIN, &intPin);
|
|
|
|
-
|
|
|
|
- /*assign the appropriate irq line */
|
|
|
|
- if (intPin > PCI_IRQ_LINES) {
|
|
|
|
- devices[nDevices].error = TRUE;
|
|
|
|
- } else if (intPin != 0) {
|
|
|
|
- /*This device uses an interrupt line */
|
|
|
|
- /*devices[nDevices].irq = ixp425PciIntTranslate[dev][intPin-1]; */
|
|
|
|
- devices[nDevices].irq = intPin;
|
|
|
|
- }
|
|
|
|
-#ifdef CONFIG_PCI_SCAN_SHOW
|
|
|
|
- printf ("%06d %03d %03d %04d %08d %08x\n", nDevices,
|
|
|
|
- devices[nDevices].vendor_id);
|
|
|
|
|
|
+ /*
|
|
|
|
+ * Specify that the AHB bus is operating in big endian mode. Set up
|
|
|
|
+ * byte lane swapping between little-endian PCI and the big-endian
|
|
|
|
+ * AHB bus
|
|
|
|
+ */
|
|
|
|
+#ifdef __ARMEB__
|
|
|
|
+ csr = PCI_CSR_ABE | PCI_CSR_PDS | PCI_CSR_ADS;
|
|
|
|
+#else
|
|
|
|
+ csr = PCI_CSR_ABE;
|
|
#endif
|
|
#endif
|
|
- nDevices++;
|
|
|
|
-
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- calc_bars (memBars, nMBars, IXP425_PCI_BAR_MEM_BASE);
|
|
|
|
- sys_pci_device_bars_write ();
|
|
|
|
-
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_ISR_OFFSET, PCI_ISR_PSE
|
|
|
|
- | PCI_ISR_PFE | PCI_ISR_PPE | PCI_ISR_AHBE);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-void sys_pci_bar_info_get (unsigned int devnum,
|
|
|
|
- unsigned int bus,
|
|
|
|
- unsigned int dev, unsigned int func)
|
|
|
|
-{
|
|
|
|
- unsigned int data32;
|
|
|
|
- unsigned int tmp;
|
|
|
|
- unsigned int size;
|
|
|
|
-
|
|
|
|
- pci_write_config_dword (devnum,
|
|
|
|
- PCI_CFG_BASE_ADDRESS_0, IXP425_PCI_BAR_QUERY);
|
|
|
|
- pci_read_config_dword (devnum, PCI_CFG_BASE_ADDRESS_0, &data32);
|
|
|
|
|
|
+ writel(csr, PCI_CSR_BASE + PCI_CSR_OFFSET);
|
|
|
|
|
|
- devices[devnum].bar[0].address = (data32 & 1);
|
|
|
|
|
|
+ writel(0, PCI_CSR_BASE + PCI_INTEN_OFFSET);
|
|
|
|
|
|
- if (data32 & 1) {
|
|
|
|
- /* IO space */
|
|
|
|
- tmp = data32 & ~0x3;
|
|
|
|
- size = ~(tmp - 1);
|
|
|
|
- devices[devnum].bar[0].size = size;
|
|
|
|
-
|
|
|
|
- if (nIOBars < IXP425_PCI_MAX_BAR) {
|
|
|
|
- ioBars[nIOBars++] = &devices[devnum].bar[0];
|
|
|
|
- }
|
|
|
|
- } else {
|
|
|
|
- /* Mem space */
|
|
|
|
- tmp = data32 & ~IXP425_PCI_BOTTOM_NIBBLE_OF_LONG_MASK;
|
|
|
|
- size = ~(tmp - 1);
|
|
|
|
- devices[devnum].bar[0].size = size;
|
|
|
|
-
|
|
|
|
- if (nMBars < IXP425_PCI_MAX_BAR) {
|
|
|
|
- memBars[nMBars++] = &devices[devnum].bar[0];
|
|
|
|
- } else {
|
|
|
|
- devices[devnum].error = TRUE;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- devices[devnum].bar[1].size = 0;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-void sortBars (PciBar * Bars[], unsigned int nBars)
|
|
|
|
-{
|
|
|
|
- unsigned int i, j;
|
|
|
|
- PciBar *tmp;
|
|
|
|
-
|
|
|
|
- if (nBars == 0) {
|
|
|
|
- return;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /* Sort biggest to smallest */
|
|
|
|
- for (i = 0; i < nBars - 1; i++) {
|
|
|
|
- for (j = i + 1; j < nBars; j++) {
|
|
|
|
- if (Bars[j]->size > Bars[i]->size) {
|
|
|
|
- /* swap them */
|
|
|
|
- tmp = Bars[i];
|
|
|
|
- Bars[i] = Bars[j];
|
|
|
|
- Bars[j] = tmp;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-}
|
|
|
|
|
|
+ /*
|
|
|
|
+ * We configure the PCI inbound memory windows to be
|
|
|
|
+ * 1:1 mapped to SDRAM
|
|
|
|
+ */
|
|
|
|
+ crp_write(PCI_CFG_BASE_ADDRESS_0, 0x00000000);
|
|
|
|
+ crp_write(PCI_CFG_BASE_ADDRESS_1, 0x01000000);
|
|
|
|
+ crp_write(PCI_CFG_BASE_ADDRESS_2, 0x02000000);
|
|
|
|
+ crp_write(PCI_CFG_BASE_ADDRESS_3, 0x03000000);
|
|
|
|
+
|
|
|
|
+ /*
|
|
|
|
+ * Enable CSR window at 64 MiB to allow PCI masters
|
|
|
|
+ * to continue prefetching past 64 MiB boundary.
|
|
|
|
+ */
|
|
|
|
+ crp_write(PCI_CFG_BASE_ADDRESS_4, 0x04000000);
|
|
|
|
+ /*
|
|
|
|
+ * Enable the IO window to be way up high, at 0xfffffc00
|
|
|
|
+ */
|
|
|
|
+ crp_write(PCI_CFG_BASE_ADDRESS_5, 0xfffffc01);
|
|
|
|
|
|
-void calc_bars (PciBar * Bars[], unsigned int nBars, unsigned int startAddr)
|
|
|
|
-{
|
|
|
|
- unsigned int i;
|
|
|
|
|
|
+ /*Setup PCI-AHB and AHB-PCI address mappings */
|
|
|
|
+ writel(0x00010203, PCI_CSR_BASE + PCI_AHBMEMBASE_OFFSET);
|
|
|
|
|
|
- if (nBars == 0) {
|
|
|
|
- return;
|
|
|
|
- }
|
|
|
|
|
|
+ writel(0x00000000, PCI_CSR_BASE + PCI_AHBIOBASE_OFFSET);
|
|
|
|
|
|
- for (i = 0; i < nBars; i++) {
|
|
|
|
- Bars[i]->address |= startAddr;
|
|
|
|
- startAddr += Bars[i]->size;
|
|
|
|
- }
|
|
|
|
-}
|
|
|
|
|
|
+ writel(0x48494a4b, PCI_CSR_BASE + PCI_PCIMEMBASE_OFFSET);
|
|
|
|
|
|
-void sys_pci_device_bars_write (void)
|
|
|
|
-{
|
|
|
|
- unsigned int i;
|
|
|
|
- int addr;
|
|
|
|
-
|
|
|
|
- for (i = 1; i < nDevices; i++) {
|
|
|
|
- if (devices[i].error) {
|
|
|
|
- continue;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- pci_write_config_dword (devices[i].device,
|
|
|
|
- PCI_CFG_BASE_ADDRESS_0,
|
|
|
|
- devices[i].bar[0].address);
|
|
|
|
- addr = BIT (31 - devices[i].device) |
|
|
|
|
- (0 << PCI_NP_AD_FUNCSL) |
|
|
|
|
- (PCI_CFG_BASE_ADDRESS_0 & ~3);
|
|
|
|
- pci_write_config_dword (devices[i].device,
|
|
|
|
- PCI_CFG_DEV_INT_LINE, devices[i].irq);
|
|
|
|
-
|
|
|
|
- pci_write_config_word (devices[i].device,
|
|
|
|
- PCI_CFG_COMMAND, INITIAL_PCI_CMD);
|
|
|
|
|
|
+ crp_write(PCI_CFG_SUB_VENDOR_ID, IXP425_PCI_SUB_VENDOR_SYSTEM);
|
|
|
|
|
|
- }
|
|
|
|
-}
|
|
|
|
|
|
+ crp_write(PCI_CFG_COMMAND, PCI_CFG_CMD_MAE | PCI_CFG_CMD_BME);
|
|
|
|
+ udelay(1000);
|
|
|
|
|
|
|
|
+ /* clear error bits in status register */
|
|
|
|
+ writel(PCI_ISR_PSE | PCI_ISR_PFE | PCI_ISR_PPE | PCI_ISR_AHBE,
|
|
|
|
+ PCI_CSR_BASE + PCI_ISR_OFFSET);
|
|
|
|
|
|
-int pci_device_exists (unsigned int deviceNo)
|
|
|
|
-{
|
|
|
|
- unsigned int vendorId;
|
|
|
|
- unsigned int regval;
|
|
|
|
-
|
|
|
|
- pci_read_config_dword (deviceNo, PCI_CFG_VENDOR_ID, &vendorId);
|
|
|
|
-
|
|
|
|
- /* There are two ways to find out an empty device.
|
|
|
|
- * 1. check Master Abort bit after the access.
|
|
|
|
- * 2. check whether the vendor id read back is 0x0.
|
|
|
|
|
|
+ /*
|
|
|
|
+ * Set Initialize Complete in PCI Control Register: allow IXP4XX to
|
|
|
|
+ * respond to PCI configuration cycles.
|
|
*/
|
|
*/
|
|
- REG_READ (PCI_CSR_BASE, PCI_ISR_OFFSET, regval);
|
|
|
|
- if ((vendorId != 0x0) && ((regval & PCI_ISR_PFE) == 0)) {
|
|
|
|
- return TRUE;
|
|
|
|
- }
|
|
|
|
- /*no device present, make sure that the master abort bit is reset */
|
|
|
|
|
|
+ csr |= PCI_CSR_IC;
|
|
|
|
+ writel(csr, PCI_CSR_BASE + PCI_CSR_OFFSET);
|
|
|
|
|
|
- REG_WRITE (PCI_CSR_BASE, PCI_ISR_OFFSET, PCI_ISR_PFE);
|
|
|
|
- return FALSE;
|
|
|
|
-}
|
|
|
|
|
|
+ hose->first_busno = 0;
|
|
|
|
+ hose->last_busno = 0;
|
|
|
|
|
|
-pci_dev_t pci_find_devices (struct pci_device_id * ids, int devNo)
|
|
|
|
-{
|
|
|
|
- unsigned int i;
|
|
|
|
- unsigned int devdidvid;
|
|
|
|
- unsigned int didvid;
|
|
|
|
- unsigned int vendorId, deviceId;
|
|
|
|
|
|
+ /* System memory space */
|
|
|
|
+ pci_set_region(hose->regions + 0,
|
|
|
|
+ PCI_MEMORY_BUS,
|
|
|
|
+ PCI_MEMORY_PHY, PCI_MEMORY_SIZE, PCI_REGION_SYS_MEMORY);
|
|
|
|
|
|
- vendorId = ids->vendor;
|
|
|
|
- deviceId = ids->device;
|
|
|
|
- didvid = ((deviceId << 16) & IXP425_PCI_TOP_WORD_OF_LONG_MASK) |
|
|
|
|
- (vendorId & IXP425_PCI_BOTTOM_WORD_OF_LONG_MASK);
|
|
|
|
|
|
+ /* PCI memory space */
|
|
|
|
+ pci_set_region(hose->regions + 1,
|
|
|
|
+ PCI_MEM_BUS,
|
|
|
|
+ PCI_MEM_PHY, PCI_MEM_SIZE, PCI_REGION_MEM);
|
|
|
|
+ /* PCI I/O space */
|
|
|
|
+ pci_set_region(hose->regions + 2,
|
|
|
|
+ PCI_IO_BUS, PCI_IO_PHY, PCI_IO_SIZE, PCI_REGION_IO);
|
|
|
|
|
|
- for (i = devNo + 1; i < nDevices; i++) {
|
|
|
|
|
|
+ hose->region_count = 3;
|
|
|
|
|
|
- pci_read_config_dword (devices[i].device, PCI_CFG_VENDOR_ID,
|
|
|
|
- &devdidvid);
|
|
|
|
|
|
+ pci_set_ops(hose,
|
|
|
|
+ pci_ixp_hose_read_config_byte,
|
|
|
|
+ pci_ixp_hose_read_config_word,
|
|
|
|
+ pci_ixp_hose_read_config_dword,
|
|
|
|
+ pci_ixp_hose_write_config_byte,
|
|
|
|
+ pci_ixp_hose_write_config_word,
|
|
|
|
+ pci_ixp_hose_write_config_dword);
|
|
|
|
|
|
- if (devdidvid == didvid) {
|
|
|
|
- return devices[i].device;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- return -1;
|
|
|
|
|
|
+ pci_register_hose(hose);
|
|
|
|
+ hose->last_busno = pci_hose_scan(hose);
|
|
}
|
|
}
|