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path: root/drivers/pci/fsl_pci_init.c
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Diffstat (limited to 'drivers/pci/fsl_pci_init.c')
-rw-r--r--drivers/pci/fsl_pci_init.c193
1 files changed, 176 insertions, 17 deletions
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c
index bb2813f12..20b2dcc76 100644
--- a/drivers/pci/fsl_pci_init.c
+++ b/drivers/pci/fsl_pci_init.c
@@ -18,6 +18,8 @@
#include <common.h>
+DECLARE_GLOBAL_DATA_PTR;
+
/*
* PCI/PCIE Controller initialization for mpc85xx/mpc86xx soc's
*
@@ -35,14 +37,103 @@
#include <pci.h>
#include <asm/immap_fsl_pci.h>
+/* Freescale-specific PCI config registers */
+#define FSL_PCI_PBFR 0x44
+#define FSL_PCIE_CAP_ID 0x4c
+#define FSL_PCIE_CFG_RDY 0x4b0
+
void pciauto_prescan_setup_bridge(struct pci_controller *hose,
pci_dev_t dev, int sub_bus);
void pciauto_postscan_setup_bridge(struct pci_controller *hose,
pci_dev_t dev, int sub_bus);
-
void pciauto_config_init(struct pci_controller *hose);
-void
-fsl_pci_init(struct pci_controller *hose)
+
+#ifndef CONFIG_SYS_PCI_MEMORY_BUS
+#define CONFIG_SYS_PCI_MEMORY_BUS 0
+#endif
+
+#ifndef CONFIG_SYS_PCI_MEMORY_PHYS
+#define CONFIG_SYS_PCI_MEMORY_PHYS 0
+#endif
+
+#if defined(CONFIG_SYS_PCI_64BIT) && !defined(CONFIG_SYS_PCI64_MEMORY_BUS)
+#define CONFIG_SYS_PCI64_MEMORY_BUS (64ull*1024*1024*1024)
+#endif
+
+int fsl_pci_setup_inbound_windows(struct pci_region *r)
+{
+ struct pci_region *rgn_base = r;
+ u64 sz = min((u64)gd->ram_size, (1ull << 32) - 1);
+
+ phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS;
+ pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS;
+ pci_size_t pci_sz = 1ull << __ilog2_u64(sz);
+
+ debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
+ (u64)bus_start, (u64)phys_start, (u64)pci_sz);
+ pci_set_region(r++, bus_start, phys_start, pci_sz,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
+ PCI_REGION_PREFETCH);
+
+ sz -= pci_sz;
+ bus_start += pci_sz;
+ phys_start += pci_sz;
+
+ pci_sz = 1ull << __ilog2_u64(sz);
+ if (sz) {
+ debug ("R1 bus_start: %llx phys_start: %llx size: %llx\n",
+ (u64)bus_start, (u64)phys_start, (u64)pci_sz);
+ pci_set_region(r++, bus_start, phys_start, pci_sz,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
+ PCI_REGION_PREFETCH);
+ sz -= pci_sz;
+ bus_start += pci_sz;
+ phys_start += pci_sz;
+ }
+
+#if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT)
+ /*
+ * On 64-bit capable systems, set up a mapping for all of DRAM
+ * in high pci address space.
+ */
+ pci_sz = 1ull << __ilog2_u64(gd->ram_size);
+ /* round up to the next largest power of two */
+ if (gd->ram_size > pci_sz)
+ pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
+ debug ("R64 bus_start: %llx phys_start: %llx size: %llx\n",
+ (u64)CONFIG_SYS_PCI64_MEMORY_BUS,
+ (u64)CONFIG_SYS_PCI_MEMORY_PHYS,
+ (u64)pci_sz);
+ pci_set_region(r++,
+ CONFIG_SYS_PCI64_MEMORY_BUS,
+ CONFIG_SYS_PCI_MEMORY_PHYS,
+ pci_sz,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
+ PCI_REGION_PREFETCH);
+#else
+ pci_sz = 1ull << __ilog2_u64(sz);
+ if (sz) {
+ debug ("R2 bus_start: %llx phys_start: %llx size: %llx\n",
+ (u64)bus_start, (u64)phys_start, (u64)pci_sz);
+ pci_set_region(r++, bus_start, phys_start, pci_sz,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
+ PCI_REGION_PREFETCH);
+ sz -= pci_sz;
+ bus_start += pci_sz;
+ phys_start += pci_sz;
+ }
+#endif
+
+#ifdef CONFIG_PHYS_64BIT
+ if (sz && (((u64)gd->ram_size) < (1ull << 32)))
+ printf("Was not able to map all of memory via "
+ "inbound windows -- %lld remaining\n", sz);
+#endif
+
+ return r - rgn_base;
+}
+
+void fsl_pci_init(struct pci_controller *hose)
{
u16 temp16;
u32 temp32;
@@ -65,25 +156,36 @@ fsl_pci_init(struct pci_controller *hose)
#endif
for (r=0; r<hose->region_count; r++) {
- if (hose->regions[r].flags & PCI_REGION_MEMORY) { /* inbound */
- pi->pitar = (hose->regions[r].bus_start >> 12) & 0x000fffff;
- pi->piwbar = (hose->regions[r].phys_start >> 12) & 0x000fffff;
+ u32 sz = (__ilog2_u64((u64)hose->regions[r].size) - 1);
+ if (hose->regions[r].flags & PCI_REGION_SYS_MEMORY) { /* inbound */
+ u32 flag = PIWAR_EN | PIWAR_LOCAL |
+ PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
+ pi->pitar = (hose->regions[r].phys_start >> 12);
+ pi->piwbar = (hose->regions[r].bus_start >> 12);
+#ifdef CONFIG_SYS_PCI_64BIT
+ pi->piwbear = (hose->regions[r].bus_start >> 44);
+#else
pi->piwbear = 0;
- pi->piwar = PIWAR_EN | PIWAR_PF | PIWAR_LOCAL |
- PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP |
- (__ilog2(hose->regions[r].size) - 1);
+#endif
+ if (hose->regions[r].flags & PCI_REGION_PREFETCH)
+ flag |= PIWAR_PF;
+ pi->piwar = flag | sz;
pi++;
inbound = hose->regions[r].size > 0;
} else { /* Outbound */
- po->powbar = (hose->regions[r].phys_start >> 12) & 0x000fffff;
- po->potar = (hose->regions[r].bus_start >> 12) & 0x000fffff;
+ po->powbar = (hose->regions[r].phys_start >> 12);
+ po->potar = (hose->regions[r].bus_start >> 12);
+#ifdef CONFIG_SYS_PCI_64BIT
+ po->potear = (hose->regions[r].bus_start >> 44);
+#else
po->potear = 0;
+#endif
if (hose->regions[r].flags & PCI_REGION_IO)
- po->powar = POWAR_EN | POWAR_IO_READ | POWAR_IO_WRITE |
- (__ilog2(hose->regions[r].size) - 1);
+ po->powar = POWAR_EN | sz |
+ POWAR_IO_READ | POWAR_IO_WRITE;
else
- po->powar = POWAR_EN | POWAR_MEM_READ | POWAR_MEM_WRITE |
- (__ilog2(hose->regions[r].size) - 1);
+ po->powar = POWAR_EN | sz |
+ POWAR_MEM_READ | POWAR_MEM_WRITE;
po++;
}
}
@@ -168,8 +270,21 @@ fsl_pci_init(struct pci_controller *hose)
}
#ifndef CONFIG_PCI_NOSCAN
- printf (" Scanning PCI bus %02x\n", hose->current_busno);
- hose->last_busno = pci_hose_scan_bus(hose,hose->current_busno);
+ pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &temp8);
+
+ /* Programming Interface (PCI_CLASS_PROG)
+ * 0 == pci host or pcie root-complex,
+ * 1 == pci agent or pcie end-point
+ */
+ if (!temp8) {
+ printf(" Scanning PCI bus %02x\n",
+ hose->current_busno);
+ hose->last_busno = pci_hose_scan_bus(hose, hose->current_busno);
+ } else {
+ debug(" Not scanning PCI bus %02x. PI=%x\n",
+ hose->current_busno, temp8);
+ hose->last_busno = hose->current_busno;
+ }
if ( bridge ) { /* update limit regs and subordinate busno */
pciauto_postscan_setup_bridge(hose, dev, hose->last_busno);
@@ -195,3 +310,47 @@ fsl_pci_init(struct pci_controller *hose)
pci_hose_write_config_word(hose, dev, PCI_SEC_STATUS, 0xffff);
}
}
+
+/* Enable inbound PCI config cycles for agent/endpoint interface */
+void fsl_pci_config_unlock(struct pci_controller *hose)
+{
+ pci_dev_t dev = PCI_BDF(hose->first_busno,0,0);
+ u8 agent;
+ u8 pcie_cap;
+ u16 pbfr;
+
+ pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &agent);
+ if (!agent)
+ return;
+
+ pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap);
+ if (pcie_cap != 0x0) {
+ /* PCIe - set CFG_READY bit of Configuration Ready Register */
+ pci_hose_write_config_byte(hose, dev, FSL_PCIE_CFG_RDY, 0x1);
+ } else {
+ /* PCI - clear ACL bit of PBFR */
+ pci_hose_read_config_word(hose, dev, FSL_PCI_PBFR, &pbfr);
+ pbfr &= ~0x20;
+ pci_hose_write_config_word(hose, dev, FSL_PCI_PBFR, pbfr);
+ }
+}
+
+#ifdef CONFIG_OF_BOARD_SETUP
+#include <libfdt.h>
+#include <fdt_support.h>
+
+void ft_fsl_pci_setup(void *blob, const char *pci_alias,
+ struct pci_controller *hose)
+{
+ int off = fdt_path_offset(blob, pci_alias);
+
+ if (off >= 0) {
+ u32 bus_range[2];
+
+ bus_range[0] = 0;
+ bus_range[1] = hose->last_busno - hose->first_busno;
+ fdt_setprop(blob, off, "bus-range", &bus_range[0], 2*4);
+ fdt_pci_dma_ranges(blob, off, hose);
+ }
+}
+#endif
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-02 16:22:55 +0000