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path: root/arch/powerpc/sysdev/ppc4xx_pci.c
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Diffstat (limited to 'arch/powerpc/sysdev/ppc4xx_pci.c')
-rw-r--r--arch/powerpc/sysdev/ppc4xx_pci.c106
1 files changed, 95 insertions, 11 deletions
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 4f05f754234..df6e2fc4ff9 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -176,8 +176,12 @@ static int __init ppc4xx_parse_dma_ranges(struct pci_controller *hose,
return -ENXIO;
}
- /* Check that we are fully contained within 32 bits space */
- if (res->end > 0xffffffff) {
+ /* Check that we are fully contained within 32 bits space if we are not
+ * running on a 460sx or 476fpe which have 64 bit bus addresses.
+ */
+ if (res->end > 0xffffffff &&
+ !(of_device_is_compatible(hose->dn, "ibm,plb-pciex-460sx")
+ || of_device_is_compatible(hose->dn, "ibm,plb-pciex-476fpe"))) {
printk(KERN_ERR "%s: dma-ranges outside of 32 bits space\n",
hose->dn->full_name);
return -ENXIO;
@@ -257,6 +261,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
/* Setup outbound memory windows */
for (i = j = 0; i < 3; i++) {
struct resource *res = &hose->mem_resources[i];
+ resource_size_t offset = hose->mem_offset[i];
/* we only care about memory windows */
if (!(res->flags & IORESOURCE_MEM))
@@ -270,7 +275,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
/* Configure the resource */
if (ppc4xx_setup_one_pci_PMM(hose, reg,
res->start,
- res->start - hose->pci_mem_offset,
+ res->start - offset,
resource_size(res),
res->flags,
j) == 0) {
@@ -279,7 +284,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
/* If the resource PCI address is 0 then we have our
* ISA memory hole
*/
- if (res->start == hose->pci_mem_offset)
+ if (res->start == offset)
found_isa_hole = 1;
}
}
@@ -457,6 +462,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
/* Setup outbound memory windows */
for (i = j = 0; i < 3; i++) {
struct resource *res = &hose->mem_resources[i];
+ resource_size_t offset = hose->mem_offset[i];
/* we only care about memory windows */
if (!(res->flags & IORESOURCE_MEM))
@@ -470,7 +476,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
/* Configure the resource */
if (ppc4xx_setup_one_pcix_POM(hose, reg,
res->start,
- res->start - hose->pci_mem_offset,
+ res->start - offset,
resource_size(res),
res->flags,
j) == 0) {
@@ -479,7 +485,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
/* If the resource PCI address is 0 then we have our
* ISA memory hole
*/
- if (res->start == hose->pci_mem_offset)
+ if (res->start == offset)
found_isa_hole = 1;
}
}
@@ -1050,6 +1056,74 @@ static struct ppc4xx_pciex_hwops ppc460ex_pcie_hwops __initdata =
.check_link = ppc4xx_pciex_check_link_sdr,
};
+static int __init apm821xx_pciex_core_init(struct device_node *np)
+{
+ /* Return the number of pcie port */
+ return 1;
+}
+
+static int __init apm821xx_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+{
+ u32 val;
+
+ /*
+ * Do a software reset on PCIe ports.
+ * This code is to fix the issue that pci drivers doesn't re-assign
+ * bus number for PCIE devices after Uboot
+ * scanned and configured all the buses (eg. PCIE NIC IntelPro/1000
+ * PT quad port, SAS LSI 1064E)
+ */
+
+ mtdcri(SDR0, PESDR0_460EX_PHY_CTL_RST, 0x0);
+ mdelay(10);
+
+ if (port->endpoint)
+ val = PTYPE_LEGACY_ENDPOINT << 20;
+ else
+ val = PTYPE_ROOT_PORT << 20;
+
+ val |= LNKW_X1 << 12;
+
+ mtdcri(SDR0, port->sdr_base + PESDRn_DLPSET, val);
+ mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET1, 0x00000000);
+ mtdcri(SDR0, port->sdr_base + PESDRn_UTLSET2, 0x01010000);
+
+ mtdcri(SDR0, PESDR0_460EX_L0CDRCTL, 0x00003230);
+ mtdcri(SDR0, PESDR0_460EX_L0DRV, 0x00000130);
+ mtdcri(SDR0, PESDR0_460EX_L0CLK, 0x00000006);
+
+ mtdcri(SDR0, PESDR0_460EX_PHY_CTL_RST, 0x10000000);
+ mdelay(50);
+ mtdcri(SDR0, PESDR0_460EX_PHY_CTL_RST, 0x30000000);
+
+ mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
+ mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET) |
+ (PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTPYN));
+
+ /* Poll for PHY reset */
+ val = PESDR0_460EX_RSTSTA - port->sdr_base;
+ if (ppc4xx_pciex_wait_on_sdr(port, val, 0x1, 1, 100)) {
+ printk(KERN_WARNING "%s: PCIE: Can't reset PHY\n", __func__);
+ return -EBUSY;
+ } else {
+ mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET,
+ (mfdcri(SDR0, port->sdr_base + PESDRn_RCSSET) &
+ ~(PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTDL)) |
+ PESDRx_RCSSET_RSTPYN);
+
+ port->has_ibpre = 1;
+ return 0;
+ }
+}
+
+static struct ppc4xx_pciex_hwops apm821xx_pcie_hwops __initdata = {
+ .want_sdr = true,
+ .core_init = apm821xx_pciex_core_init,
+ .port_init_hw = apm821xx_pciex_init_port_hw,
+ .setup_utl = ppc460ex_pciex_init_utl,
+ .check_link = ppc4xx_pciex_check_link_sdr,
+};
+
static int __init ppc460sx_pciex_core_init(struct device_node *np)
{
/* HSS drive amplitude */
@@ -1362,13 +1436,16 @@ static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
ppc4xx_pciex_hwops = &ppc460ex_pcie_hwops;
if (of_device_is_compatible(np, "ibm,plb-pciex-460sx"))
ppc4xx_pciex_hwops = &ppc460sx_pcie_hwops;
+ if (of_device_is_compatible(np, "ibm,plb-pciex-apm821xx"))
+ ppc4xx_pciex_hwops = &apm821xx_pcie_hwops;
#endif /* CONFIG_44x */
#ifdef CONFIG_40x
if (of_device_is_compatible(np, "ibm,plb-pciex-405ex"))
ppc4xx_pciex_hwops = &ppc405ex_pcie_hwops;
#endif
#ifdef CONFIG_476FPE
- if (of_device_is_compatible(np, "ibm,plb-pciex-476fpe"))
+ if (of_device_is_compatible(np, "ibm,plb-pciex-476fpe")
+ || of_device_is_compatible(np, "ibm,plb-pciex-476gtr"))
ppc4xx_pciex_hwops = &ppc_476fpe_pcie_hwops;
#endif
if (ppc4xx_pciex_hwops == NULL) {
@@ -1679,7 +1756,10 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port *port,
dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL,
sa | DCRO_PEGPL_460SX_OMR1MSKL_UOT
| DCRO_PEGPL_OMRxMSKL_VAL);
- else if (of_device_is_compatible(port->node, "ibm,plb-pciex-476fpe"))
+ else if (of_device_is_compatible(
+ port->node, "ibm,plb-pciex-476fpe") ||
+ of_device_is_compatible(
+ port->node, "ibm,plb-pciex-476gtr"))
dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL,
sa | DCRO_PEGPL_476FPE_OMR1MSKL_UOT
| DCRO_PEGPL_OMRxMSKL_VAL);
@@ -1722,6 +1802,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
/* Setup outbound memory windows */
for (i = j = 0; i < 3; i++) {
struct resource *res = &hose->mem_resources[i];
+ resource_size_t offset = hose->mem_offset[i];
/* we only care about memory windows */
if (!(res->flags & IORESOURCE_MEM))
@@ -1735,7 +1816,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
/* Configure the resource */
if (ppc4xx_setup_one_pciex_POM(port, hose, mbase,
res->start,
- res->start - hose->pci_mem_offset,
+ res->start - offset,
resource_size(res),
res->flags,
j) == 0) {
@@ -1744,7 +1825,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
/* If the resource PCI address is 0 then we have our
* ISA memory hole
*/
- if (res->start == hose->pci_mem_offset)
+ if (res->start == offset)
found_isa_hole = 1;
}
}
@@ -1808,7 +1889,10 @@ static void __init ppc4xx_configure_pciex_PIMs(struct ppc4xx_pciex_port *port,
sa |= PCI_BASE_ADDRESS_MEM_PREFETCH;
if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx") ||
- of_device_is_compatible(port->node, "ibm,plb-pciex-476fpe"))
+ of_device_is_compatible(
+ port->node, "ibm,plb-pciex-476fpe") ||
+ of_device_is_compatible(
+ port->node, "ibm,plb-pciex-476gtr"))
sa |= PCI_BASE_ADDRESS_MEM_TYPE_64;
out_le32(mbase + PECFG_BAR0HMPA, RES_TO_U32_HIGH(sa));
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 14:39:52 +0000