| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Freescale MPC85xx/MPC86xx RapidIO support |
| * |
| * Copyright 2009 Sysgo AG |
| * Thomas Moll <thomas.moll@sysgo.com> |
| * - fixed maintenance access routines, check for aligned access |
| * |
| * Copyright 2009 Integrated Device Technology, Inc. |
| * Alex Bounine <alexandre.bounine@idt.com> |
| * - Added Port-Write message handling |
| * - Added Machine Check exception handling |
| * |
| * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc. |
| * Zhang Wei <wei.zhang@freescale.com> |
| * |
| * Copyright 2005 MontaVista Software, Inc. |
| * Matt Porter <mporter@kernel.crashing.org> |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/extable.h> |
| #include <linux/types.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/interrupt.h> |
| #include <linux/device.h> |
| #include <linux/of_address.h> |
| #include <linux/of_irq.h> |
| #include <linux/of_platform.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| |
| #include <linux/io.h> |
| #include <linux/uaccess.h> |
| #include <asm/machdep.h> |
| |
| #include "fsl_rio.h" |
| |
| #undef DEBUG_PW /* Port-Write debugging */ |
| |
| #define RIO_PORT1_EDCSR 0x0640 |
| #define RIO_PORT2_EDCSR 0x0680 |
| #define RIO_PORT1_IECSR 0x10130 |
| #define RIO_PORT2_IECSR 0x101B0 |
| |
| #define RIO_GCCSR 0x13c |
| #define RIO_ESCSR 0x158 |
| #define ESCSR_CLEAR 0x07120204 |
| #define RIO_PORT2_ESCSR 0x178 |
| #define RIO_CCSR 0x15c |
| #define RIO_LTLEDCSR_IER 0x80000000 |
| #define RIO_LTLEDCSR_PRT 0x01000000 |
| #define IECSR_CLEAR 0x80000000 |
| #define RIO_ISR_AACR 0x10120 |
| #define RIO_ISR_AACR_AA 0x1 /* Accept All ID */ |
| |
| #define RIWTAR_TRAD_VAL_SHIFT 12 |
| #define RIWTAR_TRAD_MASK 0x00FFFFFF |
| #define RIWBAR_BADD_VAL_SHIFT 12 |
| #define RIWBAR_BADD_MASK 0x003FFFFF |
| #define RIWAR_ENABLE 0x80000000 |
| #define RIWAR_TGINT_LOCAL 0x00F00000 |
| #define RIWAR_RDTYP_NO_SNOOP 0x00040000 |
| #define RIWAR_RDTYP_SNOOP 0x00050000 |
| #define RIWAR_WRTYP_NO_SNOOP 0x00004000 |
| #define RIWAR_WRTYP_SNOOP 0x00005000 |
| #define RIWAR_WRTYP_ALLOC 0x00006000 |
| #define RIWAR_SIZE_MASK 0x0000003F |
| |
| static DEFINE_SPINLOCK(fsl_rio_config_lock); |
| |
| #define __fsl_read_rio_config(x, addr, err, op) \ |
| __asm__ __volatile__( \ |
| "1: "op" %1,0(%2)\n" \ |
| " eieio\n" \ |
| "2:\n" \ |
| ".section .fixup,\"ax\"\n" \ |
| "3: li %1,-1\n" \ |
| " li %0,%3\n" \ |
| " b 2b\n" \ |
| ".previous\n" \ |
| EX_TABLE(1b, 3b) \ |
| : "=r" (err), "=r" (x) \ |
| : "b" (addr), "i" (-EFAULT), "0" (err)) |
| |
| void __iomem *rio_regs_win; |
| void __iomem *rmu_regs_win; |
| resource_size_t rio_law_start; |
| |
| struct fsl_rio_dbell *dbell; |
| struct fsl_rio_pw *pw; |
| |
| #ifdef CONFIG_E500 |
| int fsl_rio_mcheck_exception(struct pt_regs *regs) |
| { |
| const struct exception_table_entry *entry; |
| unsigned long reason; |
| |
| if (!rio_regs_win) |
| return 0; |
| |
| reason = in_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR)); |
| if (reason & (RIO_LTLEDCSR_IER | RIO_LTLEDCSR_PRT)) { |
| /* Check if we are prepared to handle this fault */ |
| entry = search_exception_tables(regs->nip); |
| if (entry) { |
| pr_debug("RIO: %s - MC Exception handled\n", |
| __func__); |
| out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), |
| 0); |
| regs_set_recoverable(regs); |
| regs_set_return_ip(regs, extable_fixup(entry)); |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(fsl_rio_mcheck_exception); |
| #endif |
| |
| /** |
| * fsl_local_config_read - Generate a MPC85xx local config space read |
| * @mport: RapidIO master port info |
| * @index: ID of RapdiIO interface |
| * @offset: Offset into configuration space |
| * @len: Length (in bytes) of the maintenance transaction |
| * @data: Value to be read into |
| * |
| * Generates a MPC85xx local configuration space read. Returns %0 on |
| * success or %-EINVAL on failure. |
| */ |
| static int fsl_local_config_read(struct rio_mport *mport, |
| int index, u32 offset, int len, u32 *data) |
| { |
| struct rio_priv *priv = mport->priv; |
| pr_debug("fsl_local_config_read: index %d offset %8.8x\n", index, |
| offset); |
| *data = in_be32(priv->regs_win + offset); |
| |
| return 0; |
| } |
| |
| /** |
| * fsl_local_config_write - Generate a MPC85xx local config space write |
| * @mport: RapidIO master port info |
| * @index: ID of RapdiIO interface |
| * @offset: Offset into configuration space |
| * @len: Length (in bytes) of the maintenance transaction |
| * @data: Value to be written |
| * |
| * Generates a MPC85xx local configuration space write. Returns %0 on |
| * success or %-EINVAL on failure. |
| */ |
| static int fsl_local_config_write(struct rio_mport *mport, |
| int index, u32 offset, int len, u32 data) |
| { |
| struct rio_priv *priv = mport->priv; |
| pr_debug |
| ("fsl_local_config_write: index %d offset %8.8x data %8.8x\n", |
| index, offset, data); |
| out_be32(priv->regs_win + offset, data); |
| |
| return 0; |
| } |
| |
| /** |
| * fsl_rio_config_read - Generate a MPC85xx read maintenance transaction |
| * @mport: RapidIO master port info |
| * @index: ID of RapdiIO interface |
| * @destid: Destination ID of transaction |
| * @hopcount: Number of hops to target device |
| * @offset: Offset into configuration space |
| * @len: Length (in bytes) of the maintenance transaction |
| * @val: Location to be read into |
| * |
| * Generates a MPC85xx read maintenance transaction. Returns %0 on |
| * success or %-EINVAL on failure. |
| */ |
| static int |
| fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid, |
| u8 hopcount, u32 offset, int len, u32 *val) |
| { |
| struct rio_priv *priv = mport->priv; |
| unsigned long flags; |
| u8 *data; |
| u32 rval, err = 0; |
| |
| pr_debug |
| ("fsl_rio_config_read:" |
| " index %d destid %d hopcount %d offset %8.8x len %d\n", |
| index, destid, hopcount, offset, len); |
| |
| /* 16MB maintenance window possible */ |
| /* allow only aligned access to maintenance registers */ |
| if (offset > (0x1000000 - len) || !IS_ALIGNED(offset, len)) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&fsl_rio_config_lock, flags); |
| |
| out_be32(&priv->maint_atmu_regs->rowtar, |
| (destid << 22) | (hopcount << 12) | (offset >> 12)); |
| out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); |
| |
| data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1)); |
| switch (len) { |
| case 1: |
| __fsl_read_rio_config(rval, data, err, "lbz"); |
| break; |
| case 2: |
| __fsl_read_rio_config(rval, data, err, "lhz"); |
| break; |
| case 4: |
| __fsl_read_rio_config(rval, data, err, "lwz"); |
| break; |
| default: |
| spin_unlock_irqrestore(&fsl_rio_config_lock, flags); |
| return -EINVAL; |
| } |
| |
| if (err) { |
| pr_debug("RIO: cfg_read error %d for %x:%x:%x\n", |
| err, destid, hopcount, offset); |
| } |
| |
| spin_unlock_irqrestore(&fsl_rio_config_lock, flags); |
| *val = rval; |
| |
| return err; |
| } |
| |
| /** |
| * fsl_rio_config_write - Generate a MPC85xx write maintenance transaction |
| * @mport: RapidIO master port info |
| * @index: ID of RapdiIO interface |
| * @destid: Destination ID of transaction |
| * @hopcount: Number of hops to target device |
| * @offset: Offset into configuration space |
| * @len: Length (in bytes) of the maintenance transaction |
| * @val: Value to be written |
| * |
| * Generates an MPC85xx write maintenance transaction. Returns %0 on |
| * success or %-EINVAL on failure. |
| */ |
| static int |
| fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, |
| u8 hopcount, u32 offset, int len, u32 val) |
| { |
| struct rio_priv *priv = mport->priv; |
| unsigned long flags; |
| u8 *data; |
| int ret = 0; |
| |
| pr_debug |
| ("fsl_rio_config_write:" |
| " index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n", |
| index, destid, hopcount, offset, len, val); |
| |
| /* 16MB maintenance windows possible */ |
| /* allow only aligned access to maintenance registers */ |
| if (offset > (0x1000000 - len) || !IS_ALIGNED(offset, len)) |
| return -EINVAL; |
| |
| spin_lock_irqsave(&fsl_rio_config_lock, flags); |
| |
| out_be32(&priv->maint_atmu_regs->rowtar, |
| (destid << 22) | (hopcount << 12) | (offset >> 12)); |
| out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); |
| |
| data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1)); |
| switch (len) { |
| case 1: |
| out_8((u8 *) data, val); |
| break; |
| case 2: |
| out_be16((u16 *) data, val); |
| break; |
| case 4: |
| out_be32((u32 *) data, val); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| spin_unlock_irqrestore(&fsl_rio_config_lock, flags); |
| |
| return ret; |
| } |
| |
| static void fsl_rio_inbound_mem_init(struct rio_priv *priv) |
| { |
| int i; |
| |
| /* close inbound windows */ |
| for (i = 0; i < RIO_INB_ATMU_COUNT; i++) |
| out_be32(&priv->inb_atmu_regs[i].riwar, 0); |
| } |
| |
| int fsl_map_inb_mem(struct rio_mport *mport, dma_addr_t lstart, |
| u64 rstart, u64 size, u32 flags) |
| { |
| struct rio_priv *priv = mport->priv; |
| u32 base_size; |
| unsigned int base_size_log; |
| u64 win_start, win_end; |
| u32 riwar; |
| int i; |
| |
| if ((size & (size - 1)) != 0 || size > 0x400000000ULL) |
| return -EINVAL; |
| |
| base_size_log = ilog2(size); |
| base_size = 1 << base_size_log; |
| |
| /* check if addresses are aligned with the window size */ |
| if (lstart & (base_size - 1)) |
| return -EINVAL; |
| if (rstart & (base_size - 1)) |
| return -EINVAL; |
| |
| /* check for conflicting ranges */ |
| for (i = 0; i < RIO_INB_ATMU_COUNT; i++) { |
| riwar = in_be32(&priv->inb_atmu_regs[i].riwar); |
| if ((riwar & RIWAR_ENABLE) == 0) |
| continue; |
| win_start = ((u64)(in_be32(&priv->inb_atmu_regs[i].riwbar) & RIWBAR_BADD_MASK)) |
| << RIWBAR_BADD_VAL_SHIFT; |
| win_end = win_start + ((1 << ((riwar & RIWAR_SIZE_MASK) + 1)) - 1); |
| if (rstart < win_end && (rstart + size) > win_start) |
| return -EINVAL; |
| } |
| |
| /* find unused atmu */ |
| for (i = 0; i < RIO_INB_ATMU_COUNT; i++) { |
| riwar = in_be32(&priv->inb_atmu_regs[i].riwar); |
| if ((riwar & RIWAR_ENABLE) == 0) |
| break; |
| } |
| if (i >= RIO_INB_ATMU_COUNT) |
| return -ENOMEM; |
| |
| out_be32(&priv->inb_atmu_regs[i].riwtar, lstart >> RIWTAR_TRAD_VAL_SHIFT); |
| out_be32(&priv->inb_atmu_regs[i].riwbar, rstart >> RIWBAR_BADD_VAL_SHIFT); |
| out_be32(&priv->inb_atmu_regs[i].riwar, RIWAR_ENABLE | RIWAR_TGINT_LOCAL | |
| RIWAR_RDTYP_SNOOP | RIWAR_WRTYP_SNOOP | (base_size_log - 1)); |
| |
| return 0; |
| } |
| |
| void fsl_unmap_inb_mem(struct rio_mport *mport, dma_addr_t lstart) |
| { |
| u32 win_start_shift, base_start_shift; |
| struct rio_priv *priv = mport->priv; |
| u32 riwar, riwtar; |
| int i; |
| |
| /* skip default window */ |
| base_start_shift = lstart >> RIWTAR_TRAD_VAL_SHIFT; |
| for (i = 0; i < RIO_INB_ATMU_COUNT; i++) { |
| riwar = in_be32(&priv->inb_atmu_regs[i].riwar); |
| if ((riwar & RIWAR_ENABLE) == 0) |
| continue; |
| |
| riwtar = in_be32(&priv->inb_atmu_regs[i].riwtar); |
| win_start_shift = riwtar & RIWTAR_TRAD_MASK; |
| if (win_start_shift == base_start_shift) { |
| out_be32(&priv->inb_atmu_regs[i].riwar, riwar & ~RIWAR_ENABLE); |
| return; |
| } |
| } |
| } |
| |
| void fsl_rio_port_error_handler(int offset) |
| { |
| /*XXX: Error recovery is not implemented, we just clear errors */ |
| out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); |
| |
| if (offset == 0) { |
| out_be32((u32 *)(rio_regs_win + RIO_PORT1_EDCSR), 0); |
| out_be32((u32 *)(rio_regs_win + RIO_PORT1_IECSR), IECSR_CLEAR); |
| out_be32((u32 *)(rio_regs_win + RIO_ESCSR), ESCSR_CLEAR); |
| } else { |
| out_be32((u32 *)(rio_regs_win + RIO_PORT2_EDCSR), 0); |
| out_be32((u32 *)(rio_regs_win + RIO_PORT2_IECSR), IECSR_CLEAR); |
| out_be32((u32 *)(rio_regs_win + RIO_PORT2_ESCSR), ESCSR_CLEAR); |
| } |
| } |
| static inline void fsl_rio_info(struct device *dev, u32 ccsr) |
| { |
| const char *str; |
| if (ccsr & 1) { |
| /* Serial phy */ |
| switch (ccsr >> 30) { |
| case 0: |
| str = "1"; |
| break; |
| case 1: |
| str = "4"; |
| break; |
| default: |
| str = "Unknown"; |
| break; |
| } |
| dev_info(dev, "Hardware port width: %s\n", str); |
| |
| switch ((ccsr >> 27) & 7) { |
| case 0: |
| str = "Single-lane 0"; |
| break; |
| case 1: |
| str = "Single-lane 2"; |
| break; |
| case 2: |
| str = "Four-lane"; |
| break; |
| default: |
| str = "Unknown"; |
| break; |
| } |
| dev_info(dev, "Training connection status: %s\n", str); |
| } else { |
| /* Parallel phy */ |
| if (!(ccsr & 0x80000000)) |
| dev_info(dev, "Output port operating in 8-bit mode\n"); |
| if (!(ccsr & 0x08000000)) |
| dev_info(dev, "Input port operating in 8-bit mode\n"); |
| } |
| } |
| |
| /** |
| * fsl_rio_setup - Setup Freescale PowerPC RapidIO interface |
| * @dev: platform_device pointer |
| * |
| * Initializes MPC85xx RapidIO hardware interface, configures |
| * master port with system-specific info, and registers the |
| * master port with the RapidIO subsystem. |
| */ |
| int fsl_rio_setup(struct platform_device *dev) |
| { |
| struct rio_ops *ops; |
| struct rio_mport *port; |
| struct rio_priv *priv; |
| int rc = 0; |
| const u32 *dt_range, *cell, *port_index; |
| u32 active_ports = 0; |
| struct resource regs, rmu_regs; |
| struct device_node *np, *rmu_node; |
| int rlen; |
| u32 ccsr; |
| u64 range_start, range_size; |
| int paw, aw, sw; |
| u32 i; |
| static int tmp; |
| struct device_node *rmu_np[MAX_MSG_UNIT_NUM] = {NULL}; |
| |
| if (!dev->dev.of_node) { |
| dev_err(&dev->dev, "Device OF-Node is NULL"); |
| return -ENODEV; |
| } |
| |
| rc = of_address_to_resource(dev->dev.of_node, 0, ®s); |
| if (rc) { |
| dev_err(&dev->dev, "Can't get %pOF property 'reg'\n", |
| dev->dev.of_node); |
| return -EFAULT; |
| } |
| dev_info(&dev->dev, "Of-device full name %pOF\n", |
| dev->dev.of_node); |
| dev_info(&dev->dev, "Regs: %pR\n", ®s); |
| |
| rio_regs_win = ioremap(regs.start, resource_size(®s)); |
| if (!rio_regs_win) { |
| dev_err(&dev->dev, "Unable to map rio register window\n"); |
| rc = -ENOMEM; |
| goto err_rio_regs; |
| } |
| |
| ops = kzalloc(sizeof(struct rio_ops), GFP_KERNEL); |
| if (!ops) { |
| rc = -ENOMEM; |
| goto err_ops; |
| } |
| ops->lcread = fsl_local_config_read; |
| ops->lcwrite = fsl_local_config_write; |
| ops->cread = fsl_rio_config_read; |
| ops->cwrite = fsl_rio_config_write; |
| ops->dsend = fsl_rio_doorbell_send; |
| ops->pwenable = fsl_rio_pw_enable; |
| ops->open_outb_mbox = fsl_open_outb_mbox; |
| ops->open_inb_mbox = fsl_open_inb_mbox; |
| ops->close_outb_mbox = fsl_close_outb_mbox; |
| ops->close_inb_mbox = fsl_close_inb_mbox; |
| ops->add_outb_message = fsl_add_outb_message; |
| ops->add_inb_buffer = fsl_add_inb_buffer; |
| ops->get_inb_message = fsl_get_inb_message; |
| ops->map_inb = fsl_map_inb_mem; |
| ops->unmap_inb = fsl_unmap_inb_mem; |
| |
| rmu_node = of_parse_phandle(dev->dev.of_node, "fsl,srio-rmu-handle", 0); |
| if (!rmu_node) { |
| dev_err(&dev->dev, "No valid fsl,srio-rmu-handle property\n"); |
| rc = -ENOENT; |
| goto err_rmu; |
| } |
| rc = of_address_to_resource(rmu_node, 0, &rmu_regs); |
| if (rc) { |
| dev_err(&dev->dev, "Can't get %pOF property 'reg'\n", |
| rmu_node); |
| of_node_put(rmu_node); |
| goto err_rmu; |
| } |
| of_node_put(rmu_node); |
| rmu_regs_win = ioremap(rmu_regs.start, resource_size(&rmu_regs)); |
| if (!rmu_regs_win) { |
| dev_err(&dev->dev, "Unable to map rmu register window\n"); |
| rc = -ENOMEM; |
| goto err_rmu; |
| } |
| for_each_compatible_node(np, NULL, "fsl,srio-msg-unit") { |
| rmu_np[tmp] = np; |
| tmp++; |
| } |
| |
| /*set up doobell node*/ |
| np = of_find_compatible_node(NULL, NULL, "fsl,srio-dbell-unit"); |
| if (!np) { |
| dev_err(&dev->dev, "No fsl,srio-dbell-unit node\n"); |
| rc = -ENODEV; |
| goto err_dbell; |
| } |
| dbell = kzalloc(sizeof(struct fsl_rio_dbell), GFP_KERNEL); |
| if (!(dbell)) { |
| dev_err(&dev->dev, "Can't alloc memory for 'fsl_rio_dbell'\n"); |
| rc = -ENOMEM; |
| goto err_dbell; |
| } |
| dbell->dev = &dev->dev; |
| dbell->bellirq = irq_of_parse_and_map(np, 1); |
| dev_info(&dev->dev, "bellirq: %d\n", dbell->bellirq); |
| |
| aw = of_n_addr_cells(np); |
| dt_range = of_get_property(np, "reg", &rlen); |
| if (!dt_range) { |
| pr_err("%pOF: unable to find 'reg' property\n", |
| np); |
| rc = -ENOMEM; |
| goto err_pw; |
| } |
| range_start = of_read_number(dt_range, aw); |
| dbell->dbell_regs = (struct rio_dbell_regs *)(rmu_regs_win + |
| (u32)range_start); |
| |
| /*set up port write node*/ |
| np = of_find_compatible_node(NULL, NULL, "fsl,srio-port-write-unit"); |
| if (!np) { |
| dev_err(&dev->dev, "No fsl,srio-port-write-unit node\n"); |
| rc = -ENODEV; |
| goto err_pw; |
| } |
| pw = kzalloc(sizeof(struct fsl_rio_pw), GFP_KERNEL); |
| if (!(pw)) { |
| dev_err(&dev->dev, "Can't alloc memory for 'fsl_rio_pw'\n"); |
| rc = -ENOMEM; |
| goto err_pw; |
| } |
| pw->dev = &dev->dev; |
| pw->pwirq = irq_of_parse_and_map(np, 0); |
| dev_info(&dev->dev, "pwirq: %d\n", pw->pwirq); |
| aw = of_n_addr_cells(np); |
| dt_range = of_get_property(np, "reg", &rlen); |
| if (!dt_range) { |
| pr_err("%pOF: unable to find 'reg' property\n", |
| np); |
| rc = -ENOMEM; |
| goto err; |
| } |
| range_start = of_read_number(dt_range, aw); |
| pw->pw_regs = (struct rio_pw_regs *)(rmu_regs_win + (u32)range_start); |
| |
| /*set up ports node*/ |
| for_each_child_of_node(dev->dev.of_node, np) { |
| port_index = of_get_property(np, "cell-index", NULL); |
| if (!port_index) { |
| dev_err(&dev->dev, "Can't get %pOF property 'cell-index'\n", |
| np); |
| continue; |
| } |
| |
| dt_range = of_get_property(np, "ranges", &rlen); |
| if (!dt_range) { |
| dev_err(&dev->dev, "Can't get %pOF property 'ranges'\n", |
| np); |
| continue; |
| } |
| |
| /* Get node address wide */ |
| cell = of_get_property(np, "#address-cells", NULL); |
| if (cell) |
| aw = *cell; |
| else |
| aw = of_n_addr_cells(np); |
| /* Get node size wide */ |
| cell = of_get_property(np, "#size-cells", NULL); |
| if (cell) |
| sw = *cell; |
| else |
| sw = of_n_size_cells(np); |
| /* Get parent address wide wide */ |
| paw = of_n_addr_cells(np); |
| range_start = of_read_number(dt_range + aw, paw); |
| range_size = of_read_number(dt_range + aw + paw, sw); |
| |
| dev_info(&dev->dev, "%pOF: LAW start 0x%016llx, size 0x%016llx.\n", |
| np, range_start, range_size); |
| |
| port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL); |
| if (!port) |
| continue; |
| |
| rc = rio_mport_initialize(port); |
| if (rc) { |
| kfree(port); |
| continue; |
| } |
| |
| i = *port_index - 1; |
| port->index = (unsigned char)i; |
| |
| priv = kzalloc(sizeof(struct rio_priv), GFP_KERNEL); |
| if (!priv) { |
| dev_err(&dev->dev, "Can't alloc memory for 'priv'\n"); |
| kfree(port); |
| continue; |
| } |
| |
| INIT_LIST_HEAD(&port->dbells); |
| port->iores.start = range_start; |
| port->iores.end = port->iores.start + range_size - 1; |
| port->iores.flags = IORESOURCE_MEM; |
| port->iores.name = "rio_io_win"; |
| |
| if (request_resource(&iomem_resource, &port->iores) < 0) { |
| dev_err(&dev->dev, "RIO: Error requesting master port region" |
| " 0x%016llx-0x%016llx\n", |
| (u64)port->iores.start, (u64)port->iores.end); |
| kfree(priv); |
| kfree(port); |
| continue; |
| } |
| sprintf(port->name, "RIO mport %d", i); |
| |
| priv->dev = &dev->dev; |
| port->dev.parent = &dev->dev; |
| port->ops = ops; |
| port->priv = priv; |
| port->phys_efptr = 0x100; |
| port->phys_rmap = 1; |
| priv->regs_win = rio_regs_win; |
| |
| ccsr = in_be32(priv->regs_win + RIO_CCSR + i*0x20); |
| |
| /* Checking the port training status */ |
| if (in_be32((priv->regs_win + RIO_ESCSR + i*0x20)) & 1) { |
| dev_err(&dev->dev, "Port %d is not ready. " |
| "Try to restart connection...\n", i); |
| /* Disable ports */ |
| out_be32(priv->regs_win |
| + RIO_CCSR + i*0x20, 0); |
| /* Set 1x lane */ |
| setbits32(priv->regs_win |
| + RIO_CCSR + i*0x20, 0x02000000); |
| /* Enable ports */ |
| setbits32(priv->regs_win |
| + RIO_CCSR + i*0x20, 0x00600000); |
| msleep(100); |
| if (in_be32((priv->regs_win |
| + RIO_ESCSR + i*0x20)) & 1) { |
| dev_err(&dev->dev, |
| "Port %d restart failed.\n", i); |
| release_resource(&port->iores); |
| kfree(priv); |
| kfree(port); |
| continue; |
| } |
| dev_info(&dev->dev, "Port %d restart success!\n", i); |
| } |
| fsl_rio_info(&dev->dev, ccsr); |
| |
| port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR)) |
| & RIO_PEF_CTLS) >> 4; |
| dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n", |
| port->sys_size ? 65536 : 256); |
| |
| if (port->host_deviceid >= 0) |
| out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST | |
| RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED); |
| else |
| out_be32(priv->regs_win + RIO_GCCSR, |
| RIO_PORT_GEN_MASTER); |
| |
| priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win |
| + ((i == 0) ? RIO_ATMU_REGS_PORT1_OFFSET : |
| RIO_ATMU_REGS_PORT2_OFFSET)); |
| |
| priv->maint_atmu_regs = priv->atmu_regs + 1; |
| priv->inb_atmu_regs = (struct rio_inb_atmu_regs __iomem *) |
| (priv->regs_win + |
| ((i == 0) ? RIO_INB_ATMU_REGS_PORT1_OFFSET : |
| RIO_INB_ATMU_REGS_PORT2_OFFSET)); |
| |
| /* Set to receive packets with any dest ID */ |
| out_be32((priv->regs_win + RIO_ISR_AACR + i*0x80), |
| RIO_ISR_AACR_AA); |
| |
| /* Configure maintenance transaction window */ |
| out_be32(&priv->maint_atmu_regs->rowbar, |
| port->iores.start >> 12); |
| out_be32(&priv->maint_atmu_regs->rowar, |
| 0x80077000 | (ilog2(RIO_MAINT_WIN_SIZE) - 1)); |
| |
| priv->maint_win = ioremap(port->iores.start, |
| RIO_MAINT_WIN_SIZE); |
| |
| rio_law_start = range_start; |
| |
| fsl_rio_setup_rmu(port, rmu_np[i]); |
| fsl_rio_inbound_mem_init(priv); |
| |
| dbell->mport[i] = port; |
| pw->mport[i] = port; |
| |
| if (rio_register_mport(port)) { |
| release_resource(&port->iores); |
| kfree(priv); |
| kfree(port); |
| continue; |
| } |
| active_ports++; |
| } |
| |
| if (!active_ports) { |
| rc = -ENOLINK; |
| goto err; |
| } |
| |
| fsl_rio_doorbell_init(dbell); |
| fsl_rio_port_write_init(pw); |
| |
| return 0; |
| err: |
| kfree(pw); |
| pw = NULL; |
| err_pw: |
| kfree(dbell); |
| dbell = NULL; |
| err_dbell: |
| iounmap(rmu_regs_win); |
| rmu_regs_win = NULL; |
| err_rmu: |
| kfree(ops); |
| err_ops: |
| iounmap(rio_regs_win); |
| rio_regs_win = NULL; |
| err_rio_regs: |
| return rc; |
| } |
| |
| /* The probe function for RapidIO peer-to-peer network. |
| */ |
| static int fsl_of_rio_rpn_probe(struct platform_device *dev) |
| { |
| printk(KERN_INFO "Setting up RapidIO peer-to-peer network %pOF\n", |
| dev->dev.of_node); |
| |
| return fsl_rio_setup(dev); |
| }; |
| |
| static const struct of_device_id fsl_of_rio_rpn_ids[] = { |
| { |
| .compatible = "fsl,srio", |
| }, |
| {}, |
| }; |
| |
| static struct platform_driver fsl_of_rio_rpn_driver = { |
| .driver = { |
| .name = "fsl-of-rio", |
| .of_match_table = fsl_of_rio_rpn_ids, |
| }, |
| .probe = fsl_of_rio_rpn_probe, |
| }; |
| |
| static __init int fsl_of_rio_rpn_init(void) |
| { |
| return platform_driver_register(&fsl_of_rio_rpn_driver); |
| } |
| |
| subsys_initcall(fsl_of_rio_rpn_init); |