diff options
Diffstat (limited to 'arch/mips/netlogic/xlp/ahci-init-xlp2.c')
| -rw-r--r-- | arch/mips/netlogic/xlp/ahci-init-xlp2.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/ahci-init-xlp2.c b/arch/mips/netlogic/xlp/ahci-init-xlp2.c new file mode 100644 index 000000000..7b066a44e --- /dev/null +++ b/arch/mips/netlogic/xlp/ahci-init-xlp2.c @@ -0,0 +1,390 @@ +/* + * Copyright (c) 2003-2014 Broadcom Corporation + * 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 Broadcom + * 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 BROADCOM ``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 BROADCOM 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 <linux/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/irq.h> +#include <linux/bitops.h> +#include <linux/pci_ids.h> +#include <linux/nodemask.h> + +#include <asm/cpu.h> +#include <asm/mipsregs.h> + +#include <asm/netlogic/common.h> +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/mips-extns.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/iomap.h> + +#define SATA_CTL 0x0 +#define SATA_STATUS 0x1 /* Status Reg */ +#define SATA_INT 0x2 /* Interrupt Reg */ +#define SATA_INT_MASK 0x3 /* Interrupt Mask Reg */ +#define SATA_BIU_TIMEOUT 0x4 +#define AXIWRSPERRLOG 0x5 +#define AXIRDSPERRLOG 0x6 +#define BiuTimeoutLow 0x7 +#define BiuTimeoutHi 0x8 +#define BiuSlvErLow 0x9 +#define BiuSlvErHi 0xa +#define IO_CONFIG_SWAP_DIS 0xb +#define CR_REG_TIMER 0xc +#define CORE_ID 0xd +#define AXI_SLAVE_OPT1 0xe +#define PHY_MEM_ACCESS 0xf +#define PHY0_CNTRL 0x10 +#define PHY0_STAT 0x11 +#define PHY0_RX_ALIGN 0x12 +#define PHY0_RX_EQ_LO 0x13 +#define PHY0_RX_EQ_HI 0x14 +#define PHY0_BIST_LOOP 0x15 +#define PHY1_CNTRL 0x16 +#define PHY1_STAT 0x17 +#define PHY1_RX_ALIGN 0x18 +#define PHY1_RX_EQ_LO 0x19 +#define PHY1_RX_EQ_HI 0x1a +#define PHY1_BIST_LOOP 0x1b +#define RdExBase 0x1c +#define RdExLimit 0x1d +#define CacheAllocBase 0x1e +#define CacheAllocLimit 0x1f +#define BiuSlaveCmdGstNum 0x20 + +/*SATA_CTL Bits */ +#define SATA_RST_N BIT(0) /* Active low reset sata_core phy */ +#define SataCtlReserve0 BIT(1) +#define M_CSYSREQ BIT(2) /* AXI master low power, not used */ +#define S_CSYSREQ BIT(3) /* AXI slave low power, not used */ +#define P0_CP_DET BIT(8) /* Reserved, bring in from pad */ +#define P0_MP_SW BIT(9) /* Mech Switch */ +#define P0_DISABLE BIT(10) /* disable p0 */ +#define P0_ACT_LED_EN BIT(11) /* Active LED enable */ +#define P0_IRST_HARD_SYNTH BIT(12) /* PHY hard synth reset */ +#define P0_IRST_HARD_TXRX BIT(13) /* PHY lane hard reset */ +#define P0_IRST_POR BIT(14) /* PHY power on reset*/ +#define P0_IPDTXL BIT(15) /* PHY Tx lane dis/power down */ +#define P0_IPDRXL BIT(16) /* PHY Rx lane dis/power down */ +#define P0_IPDIPDMSYNTH BIT(17) /* PHY synthesizer dis/porwer down */ +#define P0_CP_POD_EN BIT(18) /* CP_POD enable */ +#define P0_AT_BYPASS BIT(19) /* P0 address translation by pass */ +#define P1_CP_DET BIT(20) /* Reserved,Cold Detect */ +#define P1_MP_SW BIT(21) /* Mech Switch */ +#define P1_DISABLE BIT(22) /* disable p1 */ +#define P1_ACT_LED_EN BIT(23) /* Active LED enable */ +#define P1_IRST_HARD_SYNTH BIT(24) /* PHY hard synth reset */ +#define P1_IRST_HARD_TXRX BIT(25) /* PHY lane hard reset */ +#define P1_IRST_POR BIT(26) /* PHY power on reset*/ +#define P1_IPDTXL BIT(27) /* PHY Tx lane dis/porwer down */ +#define P1_IPDRXL BIT(28) /* PHY Rx lane dis/porwer down */ +#define P1_IPDIPDMSYNTH BIT(29) /* PHY synthesizer dis/porwer down */ +#define P1_CP_POD_EN BIT(30) +#define P1_AT_BYPASS BIT(31) /* P1 address translation by pass */ + +/* Status register */ +#define M_CACTIVE BIT(0) /* m_cactive, not used */ +#define S_CACTIVE BIT(1) /* s_cactive, not used */ +#define P0_PHY_READY BIT(8) /* phy is ready */ +#define P0_CP_POD BIT(9) /* Cold PowerOn */ +#define P0_SLUMBER BIT(10) /* power mode slumber */ +#define P0_PATIAL BIT(11) /* power mode patial */ +#define P0_PHY_SIG_DET BIT(12) /* phy dignal detect */ +#define P0_PHY_CALI BIT(13) /* phy calibration done */ +#define P1_PHY_READY BIT(16) /* phy is ready */ +#define P1_CP_POD BIT(17) /* Cold PowerOn */ +#define P1_SLUMBER BIT(18) /* power mode slumber */ +#define P1_PATIAL BIT(19) /* power mode patial */ +#define P1_PHY_SIG_DET BIT(20) /* phy dignal detect */ +#define P1_PHY_CALI BIT(21) /* phy calibration done */ + +/* SATA CR_REG_TIMER bits */ +#define CR_TIME_SCALE (0x1000 << 0) + +/* SATA PHY specific registers start and end address */ +#define RXCDRCALFOSC0 0x0065 +#define CALDUTY 0x006e +#define RXDPIF 0x8065 +#define PPMDRIFTMAX_HI 0x80A4 + +#define nlm_read_sata_reg(b, r) nlm_read_reg(b, r) +#define nlm_write_sata_reg(b, r, v) nlm_write_reg(b, r, v) +#define nlm_get_sata_pcibase(node) \ + nlm_pcicfg_base(XLP9XX_IO_SATA_OFFSET(node)) +#define nlm_get_sata_regbase(node) \ + (nlm_get_sata_pcibase(node) + 0x100) + +/* SATA PHY config for register block 1 0x0065 .. 0x006e */ +static const u8 sata_phy_config1[] = { + 0xC9, 0xC9, 0x07, 0x07, 0x18, 0x18, 0x01, 0x01, 0x22, 0x00 +}; + +/* SATA PHY config for register block 2 0x0x8065 .. 0x0x80A4 */ +static const u8 sata_phy_config2[] = { + 0xAA, 0x00, 0x4C, 0xC9, 0xC9, 0x07, 0x07, 0x18, + 0x18, 0x05, 0x0C, 0x10, 0x00, 0x10, 0x00, 0xFF, + 0xCF, 0xF7, 0xE1, 0xF5, 0xFD, 0xFD, 0xFF, 0xFF, + 0xFF, 0xFF, 0xE3, 0xE7, 0xDB, 0xF5, 0xFD, 0xFD, + 0xF5, 0xF5, 0xFF, 0xFF, 0xE3, 0xE7, 0xDB, 0xF5, + 0xFD, 0xFD, 0xF5, 0xF5, 0xFF, 0xFF, 0xFF, 0xF5, + 0x3F, 0x00, 0x32, 0x00, 0x03, 0x01, 0x05, 0x05, + 0x04, 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x04, +}; + +const int sata_phy_debug = 0; /* set to verify PHY writes */ + +static void sata_clear_glue_reg(u64 regbase, u32 off, u32 bit) +{ + u32 reg_val; + + reg_val = nlm_read_sata_reg(regbase, off); + nlm_write_sata_reg(regbase, off, (reg_val & ~bit)); +} + +static void sata_set_glue_reg(u64 regbase, u32 off, u32 bit) +{ + u32 reg_val; + + reg_val = nlm_read_sata_reg(regbase, off); + nlm_write_sata_reg(regbase, off, (reg_val | bit)); +} + +static void write_phy_reg(u64 regbase, u32 addr, u32 physel, u8 data) +{ + nlm_write_sata_reg(regbase, PHY_MEM_ACCESS, + (1u << 31) | (physel << 24) | (data << 16) | addr); + udelay(850); +} + +static u8 read_phy_reg(u64 regbase, u32 addr, u32 physel) +{ + u32 val; + + nlm_write_sata_reg(regbase, PHY_MEM_ACCESS, + (0 << 31) | (physel << 24) | (0 << 16) | addr); + udelay(850); + val = nlm_read_sata_reg(regbase, PHY_MEM_ACCESS); + return (val >> 16) & 0xff; +} + +static void config_sata_phy(u64 regbase) +{ + u32 port, i, reg; + u8 val; + + for (port = 0; port < 2; port++) { + for (i = 0, reg = RXCDRCALFOSC0; reg <= CALDUTY; reg++, i++) + write_phy_reg(regbase, reg, port, sata_phy_config1[i]); + + for (i = 0, reg = RXDPIF; reg <= PPMDRIFTMAX_HI; reg++, i++) + write_phy_reg(regbase, reg, port, sata_phy_config2[i]); + + /* Fix for PHY link up failures at lower temperatures */ + write_phy_reg(regbase, 0x800F, port, 0x1f); + + val = read_phy_reg(regbase, 0x0029, port); + write_phy_reg(regbase, 0x0029, port, val | (0x7 << 1)); + + val = read_phy_reg(regbase, 0x0056, port); + write_phy_reg(regbase, 0x0056, port, val & ~(1 << 3)); + + val = read_phy_reg(regbase, 0x0018, port); + write_phy_reg(regbase, 0x0018, port, val & ~(0x7 << 0)); + } +} + +static void check_phy_register(u64 regbase, u32 addr, u32 physel, u8 xdata) +{ + u8 data; + + data = read_phy_reg(regbase, addr, physel); + pr_info("PHY read addr = 0x%x physel = %d data = 0x%x %s\n", + addr, physel, data, data == xdata ? "TRUE" : "FALSE"); +} + +static void verify_sata_phy_config(u64 regbase) +{ + u32 port, i, reg; + + for (port = 0; port < 2; port++) { + for (i = 0, reg = RXCDRCALFOSC0; reg <= CALDUTY; reg++, i++) + check_phy_register(regbase, reg, port, + sata_phy_config1[i]); + + for (i = 0, reg = RXDPIF; reg <= PPMDRIFTMAX_HI; reg++, i++) + check_phy_register(regbase, reg, port, + sata_phy_config2[i]); + } +} + +static void nlm_sata_firmware_init(int node) +{ + u32 reg_val; + u64 regbase; + int n; + + pr_info("Initializing XLP9XX On-chip AHCI...\n"); + regbase = nlm_get_sata_regbase(node); + + /* Reset port0 */ + sata_clear_glue_reg(regbase, SATA_CTL, P0_IRST_POR); + sata_clear_glue_reg(regbase, SATA_CTL, P0_IRST_HARD_TXRX); + sata_clear_glue_reg(regbase, SATA_CTL, P0_IRST_HARD_SYNTH); + sata_clear_glue_reg(regbase, SATA_CTL, P0_IPDTXL); + sata_clear_glue_reg(regbase, SATA_CTL, P0_IPDRXL); + sata_clear_glue_reg(regbase, SATA_CTL, P0_IPDIPDMSYNTH); + + /* port1 */ + sata_clear_glue_reg(regbase, SATA_CTL, P1_IRST_POR); + sata_clear_glue_reg(regbase, SATA_CTL, P1_IRST_HARD_TXRX); + sata_clear_glue_reg(regbase, SATA_CTL, P1_IRST_HARD_SYNTH); + sata_clear_glue_reg(regbase, SATA_CTL, P1_IPDTXL); + sata_clear_glue_reg(regbase, SATA_CTL, P1_IPDRXL); + sata_clear_glue_reg(regbase, SATA_CTL, P1_IPDIPDMSYNTH); + udelay(300); + + /* Set PHY */ + sata_set_glue_reg(regbase, SATA_CTL, P0_IPDTXL); + sata_set_glue_reg(regbase, SATA_CTL, P0_IPDRXL); + sata_set_glue_reg(regbase, SATA_CTL, P0_IPDIPDMSYNTH); + sata_set_glue_reg(regbase, SATA_CTL, P1_IPDTXL); + sata_set_glue_reg(regbase, SATA_CTL, P1_IPDRXL); + sata_set_glue_reg(regbase, SATA_CTL, P1_IPDIPDMSYNTH); + + udelay(1000); + sata_set_glue_reg(regbase, SATA_CTL, P0_IRST_POR); + udelay(1000); + sata_set_glue_reg(regbase, SATA_CTL, P1_IRST_POR); + udelay(1000); + + /* setup PHY */ + config_sata_phy(regbase); + if (sata_phy_debug) + verify_sata_phy_config(regbase); + + udelay(1000); + sata_set_glue_reg(regbase, SATA_CTL, P0_IRST_HARD_TXRX); + sata_set_glue_reg(regbase, SATA_CTL, P0_IRST_HARD_SYNTH); + sata_set_glue_reg(regbase, SATA_CTL, P1_IRST_HARD_TXRX); + sata_set_glue_reg(regbase, SATA_CTL, P1_IRST_HARD_SYNTH); + udelay(300); + + /* Override reset in serial PHY mode */ + sata_set_glue_reg(regbase, CR_REG_TIMER, CR_TIME_SCALE); + /* Set reset SATA */ + sata_set_glue_reg(regbase, SATA_CTL, SATA_RST_N); + sata_set_glue_reg(regbase, SATA_CTL, M_CSYSREQ); + sata_set_glue_reg(regbase, SATA_CTL, S_CSYSREQ); + + pr_debug("Waiting for PHYs to come up.\n"); + n = 10000; + do { + reg_val = nlm_read_sata_reg(regbase, SATA_STATUS); + if ((reg_val & P1_PHY_READY) && (reg_val & P0_PHY_READY)) + break; + udelay(10); + } while (--n > 0); + + if (reg_val & P0_PHY_READY) + pr_info("PHY0 is up.\n"); + else + pr_info("PHY0 is down.\n"); + if (reg_val & P1_PHY_READY) + pr_info("PHY1 is up.\n"); + else + pr_info("PHY1 is down.\n"); + + pr_info("XLP AHCI Init Done.\n"); +} + +static int __init nlm_ahci_init(void) +{ + int node; + + if (!cpu_is_xlp9xx()) + return 0; + for (node = 0; node < NLM_NR_NODES; node++) + if (nlm_node_present(node)) + nlm_sata_firmware_init(node); + return 0; +} + +static void nlm_sata_intr_ack(struct irq_data *data) +{ + u64 regbase; + u32 val; + int node; + + node = data->irq / NLM_IRQS_PER_NODE; + regbase = nlm_get_sata_regbase(node); + val = nlm_read_sata_reg(regbase, SATA_INT); + sata_set_glue_reg(regbase, SATA_INT, val); +} + +static void nlm_sata_fixup_bar(struct pci_dev *dev) +{ + dev->resource[5] = dev->resource[0]; + memset(&dev->resource[0], 0, sizeof(dev->resource[0])); +} + +static void nlm_sata_fixup_final(struct pci_dev *dev) +{ + u32 val; + u64 regbase; + int node; + + /* Find end bridge function to find node */ + node = xlp_socdev_to_node(dev); + regbase = nlm_get_sata_regbase(node); + + /* clear pending interrupts and then enable them */ + val = nlm_read_sata_reg(regbase, SATA_INT); + sata_set_glue_reg(regbase, SATA_INT, val); + + /* Enable only the core interrupt */ + sata_set_glue_reg(regbase, SATA_INT_MASK, 0x1); + + dev->irq = nlm_irq_to_xirq(node, PIC_SATA_IRQ); + nlm_set_pic_extra_ack(node, PIC_SATA_IRQ, nlm_sata_intr_ack); +} + +arch_initcall(nlm_ahci_init); + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_XLP9XX_SATA, + nlm_sata_fixup_bar); + +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_XLP9XX_SATA, + nlm_sata_fixup_final); |