/* * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights * reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the NetLogic * license below: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* Main initialization */ void nlm_node_init(int node) { struct nlm_soc_info *nodep; nodep = nlm_get_node(node); if (node == 0) nodep->coremask = 1; /* node 0, boot cpu */ nodep->sysbase = nlm_get_sys_regbase(node); nodep->picbase = nlm_get_pic_regbase(node); nodep->ebase = read_c0_ebase() & (~((1 << 12) - 1)); if (cpu_is_xlp9xx()) nodep->socbus = xlp9xx_get_socbus(node); else nodep->socbus = 0; spin_lock_init(&nodep->piclock); } static int xlp9xx_irq_to_irt(int irq) { switch (irq) { case PIC_GPIO_IRQ: return 12; case PIC_I2C_0_IRQ: return 125; case PIC_I2C_1_IRQ: return 126; case PIC_I2C_2_IRQ: return 127; case PIC_I2C_3_IRQ: return 128; case PIC_9XX_XHCI_0_IRQ: return 114; case PIC_9XX_XHCI_1_IRQ: return 115; case PIC_9XX_XHCI_2_IRQ: return 116; case PIC_UART_0_IRQ: return 133; case PIC_UART_1_IRQ: return 134; case PIC_SATA_IRQ: return 143; case PIC_NAND_IRQ: return 151; case PIC_SPI_IRQ: return 152; case PIC_MMC_IRQ: return 153; case PIC_PCIE_LINK_LEGACY_IRQ(0): case PIC_PCIE_LINK_LEGACY_IRQ(1): case PIC_PCIE_LINK_LEGACY_IRQ(2): case PIC_PCIE_LINK_LEGACY_IRQ(3): return 191 + irq - PIC_PCIE_LINK_LEGACY_IRQ_BASE; } return -1; } static int xlp_irq_to_irt(int irq) { uint64_t pcibase; int devoff, irt; devoff = 0; switch (irq) { case PIC_UART_0_IRQ: devoff = XLP_IO_UART0_OFFSET(0); break; case PIC_UART_1_IRQ: devoff = XLP_IO_UART1_OFFSET(0); break; case PIC_MMC_IRQ: devoff = XLP_IO_MMC_OFFSET(0); break; case PIC_I2C_0_IRQ: /* I2C will be fixed up */ case PIC_I2C_1_IRQ: case PIC_I2C_2_IRQ: case PIC_I2C_3_IRQ: if (cpu_is_xlpii()) devoff = XLP2XX_IO_I2C_OFFSET(0); else devoff = XLP_IO_I2C0_OFFSET(0); break; case PIC_SATA_IRQ: devoff = XLP_IO_SATA_OFFSET(0); break; case PIC_GPIO_IRQ: devoff = XLP_IO_GPIO_OFFSET(0); break; case PIC_NAND_IRQ: devoff = XLP_IO_NAND_OFFSET(0); break; case PIC_SPI_IRQ: devoff = XLP_IO_SPI_OFFSET(0); break; default: if (cpu_is_xlpii()) { switch (irq) { /* XLP2XX has three XHCI USB controller */ case PIC_2XX_XHCI_0_IRQ: devoff = XLP2XX_IO_USB_XHCI0_OFFSET(0); break; case PIC_2XX_XHCI_1_IRQ: devoff = XLP2XX_IO_USB_XHCI1_OFFSET(0); break; case PIC_2XX_XHCI_2_IRQ: devoff = XLP2XX_IO_USB_XHCI2_OFFSET(0); break; } } else { switch (irq) { case PIC_EHCI_0_IRQ: devoff = XLP_IO_USB_EHCI0_OFFSET(0); break; case PIC_EHCI_1_IRQ: devoff = XLP_IO_USB_EHCI1_OFFSET(0); break; case PIC_OHCI_0_IRQ: devoff = XLP_IO_USB_OHCI0_OFFSET(0); break; case PIC_OHCI_1_IRQ: devoff = XLP_IO_USB_OHCI1_OFFSET(0); break; case PIC_OHCI_2_IRQ: devoff = XLP_IO_USB_OHCI2_OFFSET(0); break; case PIC_OHCI_3_IRQ: devoff = XLP_IO_USB_OHCI3_OFFSET(0); break; } } } if (devoff != 0) { uint32_t val; pcibase = nlm_pcicfg_base(devoff); val = nlm_read_reg(pcibase, XLP_PCI_IRTINFO_REG); if (val == 0xffffffff) { irt = -1; } else { irt = val & 0xffff; /* HW weirdness, I2C IRT entry has to be fixed up */ switch (irq) { case PIC_I2C_1_IRQ: irt = irt + 1; break; case PIC_I2C_2_IRQ: irt = irt + 2; break; case PIC_I2C_3_IRQ: irt = irt + 3; break; } } } else if (irq >= PIC_PCIE_LINK_LEGACY_IRQ(0) && irq <= PIC_PCIE_LINK_LEGACY_IRQ(3)) { /* HW bug, PCI IRT entries are bad on early silicon, fix */ irt = PIC_IRT_PCIE_LINK_INDEX(irq - PIC_PCIE_LINK_LEGACY_IRQ_BASE); } else { irt = -1; } return irt; } int nlm_irq_to_irt(int irq) { /* return -2 for irqs without 1-1 mapping */ if (irq >= PIC_PCIE_LINK_MSI_IRQ(0) && irq <= PIC_PCIE_LINK_MSI_IRQ(3)) return -2; if (irq >= PIC_PCIE_MSIX_IRQ(0) && irq <= PIC_PCIE_MSIX_IRQ(3)) return -2; if (cpu_is_xlp9xx()) return xlp9xx_irq_to_irt(irq); else return xlp_irq_to_irt(irq); } static unsigned int nlm_xlp2_get_core_frequency(int node, int core) { unsigned int pll_post_div, ctrl_val0, ctrl_val1, denom; uint64_t num, sysbase, clockbase; if (cpu_is_xlp9xx()) { clockbase = nlm_get_clock_regbase(node); ctrl_val0 = nlm_read_sys_reg(clockbase, SYS_9XX_CPU_PLL_CTRL0(core)); ctrl_val1 = nlm_read_sys_reg(clockbase, SYS_9XX_CPU_PLL_CTRL1(core)); } else { sysbase = nlm_get_node(node)->sysbase; ctrl_val0 = nlm_read_sys_reg(sysbase, SYS_CPU_PLL_CTRL0(core)); ctrl_val1 = nlm_read_sys_reg(sysbase, SYS_CPU_PLL_CTRL1(core)); } /* Find PLL post divider value */ switch ((ctrl_val0 >> 24) & 0x7) { case 1: pll_post_div = 2; break; case 3: pll_post_div = 4; break; case 7: pll_post_div = 8; break; case 6: pll_post_div = 16; break; case 0: default: pll_post_div = 1; break; } num = 1000000ULL * (400 * 3 + 100 * (ctrl_val1 & 0x3f)); denom = 3 * pll_post_div; do_div(num, denom); return (unsigned int)num; } static unsigned int nlm_xlp_get_core_frequency(int node, int core) { unsigned int pll_divf, pll_divr, dfs_div, ext_div; unsigned int rstval, dfsval, denom; uint64_t num, sysbase; sysbase = nlm_get_node(node)->sysbase; rstval = nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG); dfsval = nlm_read_sys_reg(sysbase, SYS_CORE_DFS_DIV_VALUE); pll_divf = ((rstval >> 10) & 0x7f) + 1; pll_divr = ((rstval >> 8) & 0x3) + 1; ext_div = ((rstval >> 30) & 0x3) + 1; dfs_div = ((dfsval >> (core * 4)) & 0xf) + 1; num = 800000000ULL * pll_divf; denom = 3 * pll_divr * ext_div * dfs_div; do_div(num, denom); return (unsigned int)num; } unsigned int nlm_get_core_frequency(int node, int core) { if (cpu_is_xlpii()) return nlm_xlp2_get_core_frequency(node, core); else return nlm_xlp_get_core_frequency(node, core); } /* * Calculate PIC frequency from PLL registers. * freq_out = (ref_freq/2 * (6 + ctrl2[7:0]) + ctrl2[20:8]/2^13) / * ((2^ctrl0[7:5]) * Table(ctrl0[26:24])) */ static unsigned int nlm_xlp2_get_pic_frequency(int node) { u32 ctrl_val0, ctrl_val2, vco_post_div, pll_post_div, cpu_xlp9xx; u32 mdiv, fdiv, pll_out_freq_den, reg_select, ref_div, pic_div; u64 sysbase, pll_out_freq_num, ref_clk_select, clockbase, ref_clk; sysbase = nlm_get_node(node)->sysbase; clockbase = nlm_get_clock_regbase(node); cpu_xlp9xx = cpu_is_xlp9xx(); /* Find ref_clk_base */ if (cpu_xlp9xx) ref_clk_select = (nlm_read_sys_reg(sysbase, SYS_9XX_POWER_ON_RESET_CFG) >> 18) & 0x3; else ref_clk_select = (nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG) >> 18) & 0x3; switch (ref_clk_select) { case 0: ref_clk = 200000000ULL; ref_div = 3; break; case 1: ref_clk = 100000000ULL; ref_div = 1; break; case 2: ref_clk = 125000000ULL; ref_div = 1; break; case 3: ref_clk = 400000000ULL; ref_div = 3; break; } /* Find the clock source PLL device for PIC */ if (cpu_xlp9xx) { reg_select = nlm_read_sys_reg(clockbase, SYS_9XX_CLK_DEV_SEL_REG) & 0x3; switch (reg_select) { case 0: ctrl_val0 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL0); ctrl_val2 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL2); break; case 1: ctrl_val0 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL0_DEVX(0)); ctrl_val2 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL2_DEVX(0)); break; case 2: ctrl_val0 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL0_DEVX(1)); ctrl_val2 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL2_DEVX(1)); break; case 3: ctrl_val0 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL0_DEVX(2)); ctrl_val2 = nlm_read_sys_reg(clockbase, SYS_9XX_PLL_CTRL2_DEVX(2)); break; } } else { reg_select = (nlm_read_sys_reg(sysbase, SYS_CLK_DEV_SEL_REG) >> 22) & 0x3; switch (reg_select) { case 0: ctrl_val0 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL0); ctrl_val2 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL2); break; case 1: ctrl_val0 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL0_DEVX(0)); ctrl_val2 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL2_DEVX(0)); break; case 2: ctrl_val0 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL0_DEVX(1)); ctrl_val2 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL2_DEVX(1)); break; case 3: ctrl_val0 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL0_DEVX(2)); ctrl_val2 = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL2_DEVX(2)); break; } } vco_post_div = (ctrl_val0 >> 5) & 0x7; pll_post_div = (ctrl_val0 >> 24) & 0x7; mdiv = ctrl_val2 & 0xff; fdiv = (ctrl_val2 >> 8) & 0x1fff; /* Find PLL post divider value */ switch (pll_post_div) { case 1: pll_post_div = 2; break; case 3: pll_post_div = 4; break; case 7: pll_post_div = 8; break; case 6: pll_post_div = 16; break; case 0: default: pll_post_div = 1; break; } fdiv = fdiv/(1 << 13); pll_out_freq_num = ((ref_clk >> 1) * (6 + mdiv)) + fdiv; pll_out_freq_den = (1 << vco_post_div) * pll_post_div * ref_div; if (pll_out_freq_den > 0) do_div(pll_out_freq_num, pll_out_freq_den); /* PIC post divider, which happens after PLL */ if (cpu_xlp9xx) pic_div = nlm_read_sys_reg(clockbase, SYS_9XX_CLK_DEV_DIV_REG) & 0x3; else pic_div = (nlm_read_sys_reg(sysbase, SYS_CLK_DEV_DIV_REG) >> 22) & 0x3; do_div(pll_out_freq_num, 1 << pic_div); return pll_out_freq_num; } unsigned int nlm_get_pic_frequency(int node) { if (cpu_is_xlpii()) return nlm_xlp2_get_pic_frequency(node); else return 133333333; } unsigned int nlm_get_cpu_frequency(void) { return nlm_get_core_frequency(0, 0); } /* * Fills upto 8 pairs of entries containing the DRAM map of a node * if node < 0, get dram map for all nodes */ int nlm_get_dram_map(int node, uint64_t *dram_map, int nentries) { uint64_t bridgebase, base, lim; uint32_t val; unsigned int barreg, limreg, xlatreg; int i, n, rv; /* Look only at mapping on Node 0, we don't handle crazy configs */ bridgebase = nlm_get_bridge_regbase(0); rv = 0; for (i = 0; i < 8; i++) { if (rv + 1 >= nentries) break; if (cpu_is_xlp9xx()) { barreg = BRIDGE_9XX_DRAM_BAR(i); limreg = BRIDGE_9XX_DRAM_LIMIT(i); xlatreg = BRIDGE_9XX_DRAM_NODE_TRANSLN(i); } else { barreg = BRIDGE_DRAM_BAR(i); limreg = BRIDGE_DRAM_LIMIT(i); xlatreg = BRIDGE_DRAM_NODE_TRANSLN(i); } if (node >= 0) { /* node specified, get node mapping of BAR */ val = nlm_read_bridge_reg(bridgebase, xlatreg); n = (val >> 1) & 0x3; if (n != node) continue; } val = nlm_read_bridge_reg(bridgebase, barreg); val = (val >> 12) & 0xfffff; base = (uint64_t) val << 20; val = nlm_read_bridge_reg(bridgebase, limreg); val = (val >> 12) & 0xfffff; if (val == 0) /* BAR not used */ continue; lim = ((uint64_t)val + 1) << 20; dram_map[rv] = base; dram_map[rv + 1] = lim; rv += 2; } return rv; }