diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/sysdev/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rio.c | 1152 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rio.h | 78 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rmu.c | 1163 |
4 files changed, 1267 insertions, 1128 deletions
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index 84e13253aec..8dea5935b21 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -20,7 +20,7 @@ obj-$(CONFIG_FSL_LBC) += fsl_lbc.o obj-$(CONFIG_FSL_GTM) += fsl_gtm.o obj-$(CONFIG_FSL_85XX_CACHE_SRAM) += fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o obj-$(CONFIG_SIMPLE_GPIO) += simple_gpio.o -obj-$(CONFIG_FSL_RIO) += fsl_rio.o +obj-$(CONFIG_FSL_RIO) += fsl_rio.o fsl_rmu.o obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o obj-$(CONFIG_QUICC_ENGINE) += qe_lib/ obj-$(CONFIG_PPC_BESTCOMM) += bestcomm/ diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 22ffccd8bef..9484484c82c 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -10,7 +10,7 @@ * - Added Port-Write message handling * - Added Machine Check exception handling * - * Copyright (C) 2007, 2008, 2010 Freescale Semiconductor, Inc. + * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc. * Zhang Wei <wei.zhang@freescale.com> * * Copyright 2005 MontaVista Software, Inc. @@ -28,240 +28,34 @@ #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/device.h> -#include <linux/rio.h> -#include <linux/rio_drv.h> #include <linux/of_platform.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/kfifo.h> -#include <asm/io.h> +#include <linux/io.h> +#include <linux/uaccess.h> #include <asm/machdep.h> -#include <asm/uaccess.h> -#undef DEBUG_PW /* Port-Write debugging */ +#include "fsl_rio.h" -/* RapidIO definition irq, which read from OF-tree */ -#define IRQ_RIO_BELL(m) (((struct rio_priv *)(m->priv))->bellirq) -#define IRQ_RIO_TX(m) (((struct rio_priv *)(m->priv))->txirq) -#define IRQ_RIO_RX(m) (((struct rio_priv *)(m->priv))->rxirq) -#define IRQ_RIO_PW(m) (((struct rio_priv *)(m->priv))->pwirq) - -#define IPWSR_CLEAR 0x98 -#define OMSR_CLEAR 0x1cb3 -#define IMSR_CLEAR 0x491 -#define IDSR_CLEAR 0x91 -#define ODSR_CLEAR 0x1c00 -#define LTLEECSR_ENABLE_ALL 0xFFC000FC -#define ESCSR_CLEAR 0x07120204 -#define IECSR_CLEAR 0x80000000 +#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_IM0SR 0x13064 -#define RIO_IM1SR 0x13164 -#define RIO_OM0SR 0x13004 -#define RIO_OM1SR 0x13104 #define RIO_ATMU_REGS_OFFSET 0x10c00 -#define RIO_P_MSG_REGS_OFFSET 0x11000 -#define RIO_S_MSG_REGS_OFFSET 0x13000 #define RIO_GCCSR 0x13c #define RIO_ESCSR 0x158 +#define ESCSR_CLEAR 0x07120204 #define RIO_PORT2_ESCSR 0x178 #define RIO_CCSR 0x15c -#define RIO_LTLEDCSR 0x0608 #define RIO_LTLEDCSR_IER 0x80000000 #define RIO_LTLEDCSR_PRT 0x01000000 -#define RIO_LTLEECSR 0x060c -#define RIO_EPWISR 0x10010 +#define IECSR_CLEAR 0x80000000 #define RIO_ISR_AACR 0x10120 #define RIO_ISR_AACR_AA 0x1 /* Accept All ID */ -#define RIO_MAINT_WIN_SIZE 0x400000 -#define RIO_DBELL_WIN_SIZE 0x1000 - -#define RIO_MSG_OMR_MUI 0x00000002 -#define RIO_MSG_OSR_TE 0x00000080 -#define RIO_MSG_OSR_QOI 0x00000020 -#define RIO_MSG_OSR_QFI 0x00000010 -#define RIO_MSG_OSR_MUB 0x00000004 -#define RIO_MSG_OSR_EOMI 0x00000002 -#define RIO_MSG_OSR_QEI 0x00000001 - -#define RIO_MSG_IMR_MI 0x00000002 -#define RIO_MSG_ISR_TE 0x00000080 -#define RIO_MSG_ISR_QFI 0x00000010 -#define RIO_MSG_ISR_DIQI 0x00000001 - -#define RIO_IPWMR_SEN 0x00100000 -#define RIO_IPWMR_QFIE 0x00000100 -#define RIO_IPWMR_EIE 0x00000020 -#define RIO_IPWMR_CQ 0x00000002 -#define RIO_IPWMR_PWE 0x00000001 - -#define RIO_IPWSR_QF 0x00100000 -#define RIO_IPWSR_TE 0x00000080 -#define RIO_IPWSR_QFI 0x00000010 -#define RIO_IPWSR_PWD 0x00000008 -#define RIO_IPWSR_PWB 0x00000004 - -/* EPWISR Error match value */ -#define RIO_EPWISR_PINT1 0x80000000 -#define RIO_EPWISR_PINT2 0x40000000 -#define RIO_EPWISR_MU 0x00000002 -#define RIO_EPWISR_PW 0x00000001 - -#define RIO_MSG_DESC_SIZE 32 -#define RIO_MSG_BUFFER_SIZE 4096 -#define RIO_MIN_TX_RING_SIZE 2 -#define RIO_MAX_TX_RING_SIZE 2048 -#define RIO_MIN_RX_RING_SIZE 2 -#define RIO_MAX_RX_RING_SIZE 2048 - -#define DOORBELL_DMR_DI 0x00000002 -#define DOORBELL_DSR_TE 0x00000080 -#define DOORBELL_DSR_QFI 0x00000010 -#define DOORBELL_DSR_DIQI 0x00000001 -#define DOORBELL_TID_OFFSET 0x02 -#define DOORBELL_SID_OFFSET 0x04 -#define DOORBELL_INFO_OFFSET 0x06 - -#define DOORBELL_MESSAGE_SIZE 0x08 -#define DBELL_SID(x) (*(u16 *)(x + DOORBELL_SID_OFFSET)) -#define DBELL_TID(x) (*(u16 *)(x + DOORBELL_TID_OFFSET)) -#define DBELL_INF(x) (*(u16 *)(x + DOORBELL_INFO_OFFSET)) - -struct rio_atmu_regs { - u32 rowtar; - u32 rowtear; - u32 rowbar; - u32 pad2; - u32 rowar; - u32 pad3[3]; -}; - -struct rio_msg_regs { - u32 omr; /* 0xD_3000 - Outbound message 0 mode register */ - u32 osr; /* 0xD_3004 - Outbound message 0 status register */ - u32 pad1; - u32 odqdpar; /* 0xD_300C - Outbound message 0 descriptor queue - dequeue pointer address register */ - u32 pad2; - u32 osar; /* 0xD_3014 - Outbound message 0 source address - register */ - u32 odpr; /* 0xD_3018 - Outbound message 0 destination port - register */ - u32 odatr; /* 0xD_301C - Outbound message 0 destination attributes - Register*/ - u32 odcr; /* 0xD_3020 - Outbound message 0 double-word count - register */ - u32 pad3; - u32 odqepar; /* 0xD_3028 - Outbound message 0 descriptor queue - enqueue pointer address register */ - u32 pad4[13]; - u32 imr; /* 0xD_3060 - Inbound message 0 mode register */ - u32 isr; /* 0xD_3064 - Inbound message 0 status register */ - u32 pad5; - u32 ifqdpar; /* 0xD_306C - Inbound message 0 frame queue dequeue - pointer address register*/ - u32 pad6; - u32 ifqepar; /* 0xD_3074 - Inbound message 0 frame queue enqueue - pointer address register */ - u32 pad7[226]; - u32 odmr; /* 0xD_3400 - Outbound doorbell mode register */ - u32 odsr; /* 0xD_3404 - Outbound doorbell status register */ - u32 res0[4]; - u32 oddpr; /* 0xD_3418 - Outbound doorbell destination port - register */ - u32 oddatr; /* 0xD_341c - Outbound doorbell destination attributes - register */ - u32 res1[3]; - u32 odretcr; /* 0xD_342C - Outbound doorbell retry error threshold - configuration register */ - u32 res2[12]; - u32 dmr; /* 0xD_3460 - Inbound doorbell mode register */ - u32 dsr; /* 0xD_3464 - Inbound doorbell status register */ - u32 pad8; - u32 dqdpar; /* 0xD_346C - Inbound doorbell queue dequeue Pointer - address register */ - u32 pad9; - u32 dqepar; /* 0xD_3474 - Inbound doorbell Queue enqueue pointer - address register */ - u32 pad10[26]; - u32 pwmr; /* 0xD_34E0 - Inbound port-write mode register */ - u32 pwsr; /* 0xD_34E4 - Inbound port-write status register */ - u32 epwqbar; /* 0xD_34E8 - Extended Port-Write Queue Base Address - register */ - u32 pwqbar; /* 0xD_34EC - Inbound port-write queue base address - register */ -}; - -struct rio_tx_desc { - u32 res1; - u32 saddr; - u32 dport; - u32 dattr; - u32 res2; - u32 res3; - u32 dwcnt; - u32 res4; -}; - -struct rio_dbell_ring { - void *virt; - dma_addr_t phys; -}; - -struct rio_msg_tx_ring { - void *virt; - dma_addr_t phys; - void *virt_buffer[RIO_MAX_TX_RING_SIZE]; - dma_addr_t phys_buffer[RIO_MAX_TX_RING_SIZE]; - int tx_slot; - int size; - void *dev_id; -}; - -struct rio_msg_rx_ring { - void *virt; - dma_addr_t phys; - void *virt_buffer[RIO_MAX_RX_RING_SIZE]; - int rx_slot; - int size; - void *dev_id; -}; - -struct rio_port_write_msg { - void *virt; - dma_addr_t phys; - u32 msg_count; - u32 err_count; - u32 discard_count; -}; - -struct rio_priv { - struct device *dev; - void __iomem *regs_win; - struct rio_atmu_regs __iomem *atmu_regs; - struct rio_atmu_regs __iomem *maint_atmu_regs; - struct rio_atmu_regs __iomem *dbell_atmu_regs; - void __iomem *dbell_win; - void __iomem *maint_win; - struct rio_msg_regs __iomem *msg_regs; - struct rio_dbell_ring dbell_ring; - struct rio_msg_tx_ring msg_tx_ring; - struct rio_msg_rx_ring msg_rx_ring; - struct rio_port_write_msg port_write_msg; - int bellirq; - int txirq; - int rxirq; - int pwirq; - struct work_struct pw_work; - struct kfifo pw_fifo; - spinlock_t pw_fifo_lock; -}; #define __fsl_read_rio_config(x, addr, err, op) \ __asm__ __volatile__( \ @@ -279,7 +73,7 @@ struct rio_priv { : "=r" (err), "=r" (x) \ : "b" (addr), "i" (-EFAULT), "0" (err)) -static void __iomem *rio_regs_win; +void __iomem *rio_regs_win; #ifdef CONFIG_E500 int fsl_rio_mcheck_exception(struct pt_regs *regs) @@ -311,42 +105,6 @@ EXPORT_SYMBOL_GPL(fsl_rio_mcheck_exception); #endif /** - * fsl_rio_doorbell_send - Send a MPC85xx doorbell message - * @mport: RapidIO master port info - * @index: ID of RapidIO interface - * @destid: Destination ID of target device - * @data: 16-bit info field of RapidIO doorbell message - * - * Sends a MPC85xx doorbell message. Returns %0 on success or - * %-EINVAL on failure. - */ -static int fsl_rio_doorbell_send(struct rio_mport *mport, - int index, u16 destid, u16 data) -{ - struct rio_priv *priv = mport->priv; - pr_debug("fsl_doorbell_send: index %d destid %4.4x data %4.4x\n", - index, destid, data); - switch (mport->phy_type) { - case RIO_PHY_PARALLEL: - out_be32(&priv->dbell_atmu_regs->rowtar, destid << 22); - out_be16(priv->dbell_win, data); - break; - case RIO_PHY_SERIAL: - /* In the serial version silicons, such as MPC8548, MPC8641, - * below operations is must be. - */ - out_be32(&priv->msg_regs->odmr, 0x00000000); - out_be32(&priv->msg_regs->odretcr, 0x00000004); - out_be32(&priv->msg_regs->oddpr, destid << 16); - out_be32(&priv->msg_regs->oddatr, data); - out_be32(&priv->msg_regs->odmr, 0x00000001); - break; - } - - return 0; -} - -/** * fsl_local_config_read - Generate a MPC85xx local config space read * @mport: RapidIO master port info * @index: ID of RapdiIO interface @@ -362,7 +120,7 @@ static int fsl_local_config_read(struct rio_mport *mport, { struct rio_priv *priv = mport->priv; pr_debug("fsl_local_config_read: index %d offset %8.8x\n", index, - offset); + offset); *data = in_be32(priv->regs_win + offset); return 0; @@ -384,8 +142,8 @@ static int fsl_local_config_write(struct rio_mport *mport, { struct rio_priv *priv = mport->priv; pr_debug - ("fsl_local_config_write: index %d offset %8.8x data %8.8x\n", - index, offset, data); + ("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; @@ -413,7 +171,8 @@ fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid, u32 rval, err = 0; pr_debug - ("fsl_rio_config_read: index %d destid %d hopcount %d offset %8.8x len %d\n", + ("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 */ @@ -423,7 +182,7 @@ fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid, out_be32(&priv->maint_atmu_regs->rowtar, (destid << 22) | (hopcount << 12) | (offset >> 12)); - out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); + out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1)); switch (len) { @@ -470,7 +229,8 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, struct rio_priv *priv = mport->priv; u8 *data; pr_debug - ("fsl_rio_config_write: index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n", + ("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 */ @@ -480,7 +240,7 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, out_be32(&priv->maint_atmu_regs->rowtar, (destid << 22) | (hopcount << 12) | (offset >> 12)); - out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); + out_be32(&priv->maint_atmu_regs->rowtear, (destid >> 10)); data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1)); switch (len) { @@ -500,590 +260,7 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid, return 0; } -/** - * fsl_add_outb_message - Add message to the MPC85xx outbound message queue - * @mport: Master port with outbound message queue - * @rdev: Target of outbound message - * @mbox: Outbound mailbox - * @buffer: Message to add to outbound queue - * @len: Length of message - * - * Adds the @buffer message to the MPC85xx outbound message queue. Returns - * %0 on success or %-EINVAL on failure. - */ -static int -fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox, - void *buffer, size_t len) -{ - struct rio_priv *priv = mport->priv; - u32 omr; - struct rio_tx_desc *desc = (struct rio_tx_desc *)priv->msg_tx_ring.virt - + priv->msg_tx_ring.tx_slot; - int ret = 0; - - pr_debug("RIO: fsl_add_outb_message(): destid %4.4x mbox %d buffer " \ - "%8.8x len %8.8x\n", rdev->destid, mbox, (int)buffer, len); - - if ((len < 8) || (len > RIO_MAX_MSG_SIZE)) { - ret = -EINVAL; - goto out; - } - - /* Copy and clear rest of buffer */ - memcpy(priv->msg_tx_ring.virt_buffer[priv->msg_tx_ring.tx_slot], buffer, - len); - if (len < (RIO_MAX_MSG_SIZE - 4)) - memset(priv->msg_tx_ring.virt_buffer[priv->msg_tx_ring.tx_slot] - + len, 0, RIO_MAX_MSG_SIZE - len); - - switch (mport->phy_type) { - case RIO_PHY_PARALLEL: - /* Set mbox field for message */ - desc->dport = mbox & 0x3; - - /* Enable EOMI interrupt, set priority, and set destid */ - desc->dattr = 0x28000000 | (rdev->destid << 2); - break; - case RIO_PHY_SERIAL: - /* Set mbox field for message, and set destid */ - desc->dport = (rdev->destid << 16) | (mbox & 0x3); - - /* Enable EOMI interrupt and priority */ - desc->dattr = 0x28000000; - break; - } - - /* Set transfer size aligned to next power of 2 (in double words) */ - desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len); - - /* Set snooping and source buffer address */ - desc->saddr = 0x00000004 - | priv->msg_tx_ring.phys_buffer[priv->msg_tx_ring.tx_slot]; - - /* Increment enqueue pointer */ - omr = in_be32(&priv->msg_regs->omr); - out_be32(&priv->msg_regs->omr, omr | RIO_MSG_OMR_MUI); - - /* Go to next descriptor */ - if (++priv->msg_tx_ring.tx_slot == priv->msg_tx_ring.size) - priv->msg_tx_ring.tx_slot = 0; - - out: - return ret; -} - -/** - * fsl_rio_tx_handler - MPC85xx outbound message interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles outbound message interrupts. Executes a register outbound - * mailbox event handler and acks the interrupt occurrence. - */ -static irqreturn_t -fsl_rio_tx_handler(int irq, void *dev_instance) -{ - int osr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - - osr = in_be32(&priv->msg_regs->osr); - - if (osr & RIO_MSG_OSR_TE) { - pr_info("RIO: outbound message transmission error\n"); - out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_TE); - goto out; - } - - if (osr & RIO_MSG_OSR_QOI) { - pr_info("RIO: outbound message queue overflow\n"); - out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_QOI); - goto out; - } - - if (osr & RIO_MSG_OSR_EOMI) { - u32 dqp = in_be32(&priv->msg_regs->odqdpar); - int slot = (dqp - priv->msg_tx_ring.phys) >> 5; - port->outb_msg[0].mcback(port, priv->msg_tx_ring.dev_id, -1, - slot); - - /* Ack the end-of-message interrupt */ - out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_EOMI); - } - - out: - return IRQ_HANDLED; -} - -/** - * fsl_open_outb_mbox - Initialize MPC85xx outbound mailbox - * @mport: Master port implementing the outbound message unit - * @dev_id: Device specific pointer to pass on event - * @mbox: Mailbox to open - * @entries: Number of entries in the outbound mailbox ring - * - * Initializes buffer ring, request the outbound message interrupt, - * and enables the outbound message unit. Returns %0 on success and - * %-EINVAL or %-ENOMEM on failure. - */ -static int -fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) -{ - int i, j, rc = 0; - struct rio_priv *priv = mport->priv; - - if ((entries < RIO_MIN_TX_RING_SIZE) || - (entries > RIO_MAX_TX_RING_SIZE) || (!is_power_of_2(entries))) { - rc = -EINVAL; - goto out; - } - - /* Initialize shadow copy ring */ - priv->msg_tx_ring.dev_id = dev_id; - priv->msg_tx_ring.size = entries; - - for (i = 0; i < priv->msg_tx_ring.size; i++) { - priv->msg_tx_ring.virt_buffer[i] = - dma_alloc_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, - &priv->msg_tx_ring.phys_buffer[i], GFP_KERNEL); - if (!priv->msg_tx_ring.virt_buffer[i]) { - rc = -ENOMEM; - for (j = 0; j < priv->msg_tx_ring.size; j++) - if (priv->msg_tx_ring.virt_buffer[j]) - dma_free_coherent(priv->dev, - RIO_MSG_BUFFER_SIZE, - priv->msg_tx_ring. - virt_buffer[j], - priv->msg_tx_ring. - phys_buffer[j]); - goto out; - } - } - - /* Initialize outbound message descriptor ring */ - priv->msg_tx_ring.virt = dma_alloc_coherent(priv->dev, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE, - &priv->msg_tx_ring.phys, GFP_KERNEL); - if (!priv->msg_tx_ring.virt) { - rc = -ENOMEM; - goto out_dma; - } - memset(priv->msg_tx_ring.virt, 0, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE); - priv->msg_tx_ring.tx_slot = 0; - - /* Point dequeue/enqueue pointers at first entry in ring */ - out_be32(&priv->msg_regs->odqdpar, priv->msg_tx_ring.phys); - out_be32(&priv->msg_regs->odqepar, priv->msg_tx_ring.phys); - - /* Configure for snooping */ - out_be32(&priv->msg_regs->osar, 0x00000004); - - /* Clear interrupt status */ - out_be32(&priv->msg_regs->osr, 0x000000b3); - - /* Hook up outbound message handler */ - rc = request_irq(IRQ_RIO_TX(mport), fsl_rio_tx_handler, 0, - "msg_tx", (void *)mport); - if (rc < 0) - goto out_irq; - - /* - * Configure outbound message unit - * Snooping - * Interrupts (all enabled, except QEIE) - * Chaining mode - * Disable - */ - out_be32(&priv->msg_regs->omr, 0x00100220); - - /* Set number of entries */ - out_be32(&priv->msg_regs->omr, - in_be32(&priv->msg_regs->omr) | - ((get_bitmask_order(entries) - 2) << 12)); - - /* Now enable the unit */ - out_be32(&priv->msg_regs->omr, in_be32(&priv->msg_regs->omr) | 0x1); - - out: - return rc; - - out_irq: - dma_free_coherent(priv->dev, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE, - priv->msg_tx_ring.virt, priv->msg_tx_ring.phys); - - out_dma: - for (i = 0; i < priv->msg_tx_ring.size; i++) - dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, - priv->msg_tx_ring.virt_buffer[i], - priv->msg_tx_ring.phys_buffer[i]); - - return rc; -} - -/** - * fsl_close_outb_mbox - Shut down MPC85xx outbound mailbox - * @mport: Master port implementing the outbound message unit - * @mbox: Mailbox to close - * - * Disables the outbound message unit, free all buffers, and - * frees the outbound message interrupt. - */ -static void fsl_close_outb_mbox(struct rio_mport *mport, int mbox) -{ - struct rio_priv *priv = mport->priv; - /* Disable inbound message unit */ - out_be32(&priv->msg_regs->omr, 0); - - /* Free ring */ - dma_free_coherent(priv->dev, - priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE, - priv->msg_tx_ring.virt, priv->msg_tx_ring.phys); - - /* Free interrupt */ - free_irq(IRQ_RIO_TX(mport), (void *)mport); -} - -/** - * fsl_rio_rx_handler - MPC85xx inbound message interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles inbound message interrupts. Executes a registered inbound - * mailbox event handler and acks the interrupt occurrence. - */ -static irqreturn_t -fsl_rio_rx_handler(int irq, void *dev_instance) -{ - int isr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - - isr = in_be32(&priv->msg_regs->isr); - - if (isr & RIO_MSG_ISR_TE) { - pr_info("RIO: inbound message reception error\n"); - out_be32((void *)&priv->msg_regs->isr, RIO_MSG_ISR_TE); - goto out; - } - - /* XXX Need to check/dispatch until queue empty */ - if (isr & RIO_MSG_ISR_DIQI) { - /* - * We implement *only* mailbox 0, but can receive messages - * for any mailbox/letter to that mailbox destination. So, - * make the callback with an unknown/invalid mailbox number - * argument. - */ - port->inb_msg[0].mcback(port, priv->msg_rx_ring.dev_id, -1, -1); - - /* Ack the queueing interrupt */ - out_be32(&priv->msg_regs->isr, RIO_MSG_ISR_DIQI); - } - - out: - return IRQ_HANDLED; -} - -/** - * fsl_open_inb_mbox - Initialize MPC85xx inbound mailbox - * @mport: Master port implementing the inbound message unit - * @dev_id: Device specific pointer to pass on event - * @mbox: Mailbox to open - * @entries: Number of entries in the inbound mailbox ring - * - * Initializes buffer ring, request the inbound message interrupt, - * and enables the inbound message unit. Returns %0 on success - * and %-EINVAL or %-ENOMEM on failure. - */ -static int -fsl_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) -{ - int i, rc = 0; - struct rio_priv *priv = mport->priv; - - if ((entries < RIO_MIN_RX_RING_SIZE) || - (entries > RIO_MAX_RX_RING_SIZE) || (!is_power_of_2(entries))) { - rc = -EINVAL; - goto out; - } - - /* Initialize client buffer ring */ - priv->msg_rx_ring.dev_id = dev_id; - priv->msg_rx_ring.size = entries; - priv->msg_rx_ring.rx_slot = 0; - for (i = 0; i < priv->msg_rx_ring.size; i++) - priv->msg_rx_ring.virt_buffer[i] = NULL; - - /* Initialize inbound message ring */ - priv->msg_rx_ring.virt = dma_alloc_coherent(priv->dev, - priv->msg_rx_ring.size * RIO_MAX_MSG_SIZE, - &priv->msg_rx_ring.phys, GFP_KERNEL); - if (!priv->msg_rx_ring.virt) { - rc = -ENOMEM; - goto out; - } - - /* Point dequeue/enqueue pointers at first entry in ring */ - out_be32(&priv->msg_regs->ifqdpar, (u32) priv->msg_rx_ring.phys); - out_be32(&priv->msg_regs->ifqepar, (u32) priv->msg_rx_ring.phys); - - /* Clear interrupt status */ - out_be32(&priv->msg_regs->isr, 0x00000091); - - /* Hook up inbound message handler */ - rc = request_irq(IRQ_RIO_RX(mport), fsl_rio_rx_handler, 0, - "msg_rx", (void *)mport); - if (rc < 0) { - dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, - priv->msg_tx_ring.virt_buffer[i], - priv->msg_tx_ring.phys_buffer[i]); - goto out; - } - - /* - * Configure inbound message unit: - * Snooping - * 4KB max message size - * Unmask all interrupt sources - * Disable - */ - out_be32(&priv->msg_regs->imr, 0x001b0060); - - /* Set number of queue entries */ - setbits32(&priv->msg_regs->imr, (get_bitmask_order(entries) - 2) << 12); - - /* Now enable the unit */ - setbits32(&priv->msg_regs->imr, 0x1); - - out: - return rc; -} - -/** - * fsl_close_inb_mbox - Shut down MPC85xx inbound mailbox - * @mport: Master port implementing the inbound message unit - * @mbox: Mailbox to close - * - * Disables the inbound message unit, free all buffers, and - * frees the inbound message interrupt. - */ -static void fsl_close_inb_mbox(struct rio_mport *mport, int mbox) -{ - struct rio_priv *priv = mport->priv; - /* Disable inbound message unit */ - out_be32(&priv->msg_regs->imr, 0); - - /* Free ring */ - dma_free_coherent(priv->dev, priv->msg_rx_ring.size * RIO_MAX_MSG_SIZE, - priv->msg_rx_ring.virt, priv->msg_rx_ring.phys); - - /* Free interrupt */ - free_irq(IRQ_RIO_RX(mport), (void *)mport); -} - -/** - * fsl_add_inb_buffer - Add buffer to the MPC85xx inbound message queue - * @mport: Master port implementing the inbound message unit - * @mbox: Inbound mailbox number - * @buf: Buffer to add to inbound queue - * - * Adds the @buf buffer to the MPC85xx inbound message queue. Returns - * %0 on success or %-EINVAL on failure. - */ -static int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf) -{ - int rc = 0; - struct rio_priv *priv = mport->priv; - - pr_debug("RIO: fsl_add_inb_buffer(), msg_rx_ring.rx_slot %d\n", - priv->msg_rx_ring.rx_slot); - - if (priv->msg_rx_ring.virt_buffer[priv->msg_rx_ring.rx_slot]) { - printk(KERN_ERR - "RIO: error adding inbound buffer %d, buffer exists\n", - priv->msg_rx_ring.rx_slot); - rc = -EINVAL; - goto out; - } - - priv->msg_rx_ring.virt_buffer[priv->msg_rx_ring.rx_slot] = buf; - if (++priv->msg_rx_ring.rx_slot == priv->msg_rx_ring.size) - priv->msg_rx_ring.rx_slot = 0; - - out: - return rc; -} - -/** - * fsl_get_inb_message - Fetch inbound message from the MPC85xx message unit - * @mport: Master port implementing the inbound message unit - * @mbox: Inbound mailbox number - * - * Gets the next available inbound message from the inbound message queue. - * A pointer to the message is returned on success or NULL on failure. - */ -static void *fsl_get_inb_message(struct rio_mport *mport, int mbox) -{ - struct rio_priv *priv = mport->priv; - u32 phys_buf, virt_buf; - void *buf = NULL; - int buf_idx; - - phys_buf = in_be32(&priv->msg_regs->ifqdpar); - - /* If no more messages, then bail out */ - if (phys_buf == in_be32(&priv->msg_regs->ifqepar)) - goto out2; - - virt_buf = (u32) priv->msg_rx_ring.virt + (phys_buf - - priv->msg_rx_ring.phys); - buf_idx = (phys_buf - priv->msg_rx_ring.phys) / RIO_MAX_MSG_SIZE; - buf = priv->msg_rx_ring.virt_buffer[buf_idx]; - - if (!buf) { - printk(KERN_ERR - "RIO: inbound message copy failed, no buffers\n"); - goto out1; - } - - /* Copy max message size, caller is expected to allocate that big */ - memcpy(buf, (void *)virt_buf, RIO_MAX_MSG_SIZE); - - /* Clear the available buffer */ - priv->msg_rx_ring.virt_buffer[buf_idx] = NULL; - - out1: - setbits32(&priv->msg_regs->imr, RIO_MSG_IMR_MI); - - out2: - return buf; -} - -/** - * fsl_rio_dbell_handler - MPC85xx doorbell interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles doorbell interrupts. Parses a list of registered - * doorbell event handlers and executes a matching event handler. - */ -static irqreturn_t -fsl_rio_dbell_handler(int irq, void *dev_instance) -{ - int dsr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - - dsr = in_be32(&priv->msg_regs->dsr); - - if (dsr & DOORBELL_DSR_TE) { - pr_info("RIO: doorbell reception error\n"); - out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_TE); - goto out; - } - - if (dsr & DOORBELL_DSR_QFI) { - pr_info("RIO: doorbell queue full\n"); - out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_QFI); - } - - /* XXX Need to check/dispatch until queue empty */ - if (dsr & DOORBELL_DSR_DIQI) { - u32 dmsg = - (u32) priv->dbell_ring.virt + - (in_be32(&priv->msg_regs->dqdpar) & 0xfff); - struct rio_dbell *dbell; - int found = 0; - - pr_debug - ("RIO: processing doorbell, sid %2.2x tid %2.2x info %4.4x\n", - DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); - - list_for_each_entry(dbell, &port->dbells, node) { - if ((dbell->res->start <= DBELL_INF(dmsg)) && - (dbell->res->end >= DBELL_INF(dmsg))) { - found = 1; - break; - } - } - if (found) { - dbell->dinb(port, dbell->dev_id, DBELL_SID(dmsg), DBELL_TID(dmsg), - DBELL_INF(dmsg)); - } else { - pr_debug - ("RIO: spurious doorbell, sid %2.2x tid %2.2x info %4.4x\n", - DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); - } - setbits32(&priv->msg_regs->dmr, DOORBELL_DMR_DI); - out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_DIQI); - } - - out: - return IRQ_HANDLED; -} - -/** - * fsl_rio_doorbell_init - MPC85xx doorbell interface init - * @mport: Master port implementing the inbound doorbell unit - * - * Initializes doorbell unit hardware and inbound DMA buffer - * ring. Called from fsl_rio_setup(). Returns %0 on success - * or %-ENOMEM on failure. - */ -static int fsl_rio_doorbell_init(struct rio_mport *mport) -{ - struct rio_priv *priv = mport->priv; - int rc = 0; - - /* Map outbound doorbell window immediately after maintenance window */ - priv->dbell_win = ioremap(mport->iores.start + RIO_MAINT_WIN_SIZE, - RIO_DBELL_WIN_SIZE); - if (!priv->dbell_win) { - printk(KERN_ERR - "RIO: unable to map outbound doorbell window\n"); - rc = -ENOMEM; - goto out; - } - - /* Initialize inbound doorbells */ - priv->dbell_ring.virt = dma_alloc_coherent(priv->dev, 512 * - DOORBELL_MESSAGE_SIZE, &priv->dbell_ring.phys, GFP_KERNEL); - if (!priv->dbell_ring.virt) { - printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n"); - rc = -ENOMEM; - iounmap(priv->dbell_win); - goto out; - } - - /* Point dequeue/enqueue pointers at first entry in ring */ - out_be32(&priv->msg_regs->dqdpar, (u32) priv->dbell_ring.phys); - out_be32(&priv->msg_regs->dqepar, (u32) priv->dbell_ring.phys); - - /* Clear interrupt status */ - out_be32(&priv->msg_regs->dsr, 0x00000091); - - /* Hook up doorbell handler */ - rc = request_irq(IRQ_RIO_BELL(mport), fsl_rio_dbell_handler, 0, - "dbell_rx", (void *)mport); - if (rc < 0) { - iounmap(priv->dbell_win); - dma_free_coherent(priv->dev, 512 * DOORBELL_MESSAGE_SIZE, - priv->dbell_ring.virt, priv->dbell_ring.phys); - printk(KERN_ERR - "MPC85xx RIO: unable to request inbound doorbell irq"); - goto out; - } - - /* Configure doorbells for snooping, 512 entries, and enable */ - out_be32(&priv->msg_regs->dmr, 0x00108161); - - out: - return rc; -} - -static void port_error_handler(struct rio_mport *port, int offset) +void fsl_rio_port_error_handler(struct rio_mport *port, int offset) { /*XXX: Error recovery is not implemented, we just clear errors */ out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); @@ -1098,263 +275,6 @@ static void port_error_handler(struct rio_mport *port, int offset) out_be32((u32 *)(rio_regs_win + RIO_PORT2_ESCSR), ESCSR_CLEAR); } } - -static void msg_unit_error_handler(struct rio_mport *port) -{ - struct rio_priv *priv = port->priv; - - /*XXX: Error recovery is not implemented, we just clear errors */ - out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); - - out_be32((u32 *)(rio_regs_win + RIO_IM0SR), IMSR_CLEAR); - out_be32((u32 *)(rio_regs_win + RIO_IM1SR), IMSR_CLEAR); - out_be32((u32 *)(rio_regs_win + RIO_OM0SR), OMSR_CLEAR); - out_be32((u32 *)(rio_regs_win + RIO_OM1SR), OMSR_CLEAR); - - out_be32(&priv->msg_regs->odsr, ODSR_CLEAR); - out_be32(&priv->msg_regs->dsr, IDSR_CLEAR); - - out_be32(&priv->msg_regs->pwsr, IPWSR_CLEAR); -} - -/** - * fsl_rio_port_write_handler - MPC85xx port write interrupt handler - * @irq: Linux interrupt number - * @dev_instance: Pointer to interrupt-specific data - * - * Handles port write interrupts. Parses a list of registered - * port write event handlers and executes a matching event handler. - */ -static irqreturn_t -fsl_rio_port_write_handler(int irq, void *dev_instance) -{ - u32 ipwmr, ipwsr; - struct rio_mport *port = (struct rio_mport *)dev_instance; - struct rio_priv *priv = port->priv; - u32 epwisr, tmp; - - epwisr = in_be32(priv->regs_win + RIO_EPWISR); - if (!(epwisr & RIO_EPWISR_PW)) - goto pw_done; - - ipwmr = in_be32(&priv->msg_regs->pwmr); - ipwsr = in_be32(&priv->msg_regs->pwsr); - -#ifdef DEBUG_PW - pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr); - if (ipwsr & RIO_IPWSR_QF) - pr_debug(" QF"); - if (ipwsr & RIO_IPWSR_TE) - pr_debug(" TE"); - if (ipwsr & RIO_IPWSR_QFI) - pr_debug(" QFI"); - if (ipwsr & RIO_IPWSR_PWD) - pr_debug(" PWD"); - if (ipwsr & RIO_IPWSR_PWB) - pr_debug(" PWB"); - pr_debug(" )\n"); -#endif - /* Schedule deferred processing if PW was received */ - if (ipwsr & RIO_IPWSR_QFI) { - /* Save PW message (if there is room in FIFO), - * otherwise discard it. - */ - if (kfifo_avail(&priv->pw_fifo) >= RIO_PW_MSG_SIZE) { - priv->port_write_msg.msg_count++; - kfifo_in(&priv->pw_fifo, priv->port_write_msg.virt, - RIO_PW_MSG_SIZE); - } else { - priv->port_write_msg.discard_count++; - pr_debug("RIO: ISR Discarded Port-Write Msg(s) (%d)\n", - priv->port_write_msg.discard_count); - } - /* Clear interrupt and issue Clear Queue command. This allows - * another port-write to be received. - */ - out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_QFI); - out_be32(&priv->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ); - - schedule_work(&priv->pw_work); - } - - if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) { - priv->port_write_msg.err_count++; - pr_debug("RIO: Port-Write Transaction Err (%d)\n", - priv->port_write_msg.err_count); - /* Clear Transaction Error: port-write controller should be - * disabled when clearing this error - */ - out_be32(&priv->msg_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE); - out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_TE); - out_be32(&priv->msg_regs->pwmr, ipwmr); - } - - if (ipwsr & RIO_IPWSR_PWD) { - priv->port_write_msg.discard_count++; - pr_debug("RIO: Port Discarded Port-Write Msg(s) (%d)\n", - priv->port_write_msg.discard_count); - out_be32(&priv->msg_regs->pwsr, RIO_IPWSR_PWD); - } - -pw_done: - if (epwisr & RIO_EPWISR_PINT1) { - tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); - pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - port_error_handler(port, 0); - } - - if (epwisr & RIO_EPWISR_PINT2) { - tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); - pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - port_error_handler(port, 1); - } - - if (epwisr & RIO_EPWISR_MU) { - tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); - pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - msg_unit_error_handler(port); - } - - return IRQ_HANDLED; -} - -static void fsl_pw_dpc(struct work_struct *work) -{ - struct rio_priv *priv = container_of(work, struct rio_priv, pw_work); - unsigned long flags; - u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)]; - - /* - * Process port-write messages - */ - spin_lock_irqsave(&priv->pw_fifo_lock, flags); - while (kfifo_out(&priv->pw_fifo, (unsigned char *)msg_buffer, - RIO_PW_MSG_SIZE)) { - /* Process one message */ - spin_unlock_irqrestore(&priv->pw_fifo_lock, flags); -#ifdef DEBUG_PW - { - u32 i; - pr_debug("%s : Port-Write Message:", __func__); - for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); i++) { - if ((i%4) == 0) - pr_debug("\n0x%02x: 0x%08x", i*4, - msg_buffer[i]); - else - pr_debug(" 0x%08x", msg_buffer[i]); - } - pr_debug("\n"); - } -#endif - /* Pass the port-write message to RIO core for processing */ - rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer); - spin_lock_irqsave(&priv->pw_fifo_lock, flags); - } - spin_unlock_irqrestore(&priv->pw_fifo_lock, flags); -} - -/** - * fsl_rio_pw_enable - enable/disable port-write interface init - * @mport: Master port implementing the port write unit - * @enable: 1=enable; 0=disable port-write message handling - */ -static int fsl_rio_pw_enable(struct rio_mport *mport, int enable) -{ - struct rio_priv *priv = mport->priv; - u32 rval; - - rval = in_be32(&priv->msg_regs->pwmr); - - if (enable) - rval |= RIO_IPWMR_PWE; - else - rval &= ~RIO_IPWMR_PWE; - - out_be32(&priv->msg_regs->pwmr, rval); - - return 0; -} - -/** - * fsl_rio_port_write_init - MPC85xx port write interface init - * @mport: Master port implementing the port write unit - * - * Initializes port write unit hardware and DMA buffer - * ring. Called from fsl_rio_setup(). Returns %0 on success - * or %-ENOMEM on failure. - */ -static int fsl_rio_port_write_init(struct rio_mport *mport) -{ - struct rio_priv *priv = mport->priv; - int rc = 0; - - /* Following configurations require a disabled port write controller */ - out_be32(&priv->msg_regs->pwmr, - in_be32(&priv->msg_regs->pwmr) & ~RIO_IPWMR_PWE); - - /* Initialize port write */ - priv->port_write_msg.virt = dma_alloc_coherent(priv->dev, - RIO_PW_MSG_SIZE, - &priv->port_write_msg.phys, GFP_KERNEL); - if (!priv->port_write_msg.virt) { - pr_err("RIO: unable allocate port write queue\n"); - return -ENOMEM; - } - - priv->port_write_msg.err_count = 0; - priv->port_write_msg.discard_count = 0; - - /* Point dequeue/enqueue pointers at first entry */ - out_be32(&priv->msg_regs->epwqbar, 0); - out_be32(&priv->msg_regs->pwqbar, (u32) priv->port_write_msg.phys); - - pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n", - in_be32(&priv->msg_regs->epwqbar), - in_be32(&priv->msg_regs->pwqbar)); - - /* Clear interrupt status IPWSR */ - out_be32(&priv->msg_regs->pwsr, - (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD)); - - /* Configure port write contoller for snooping enable all reporting, - clear queue full */ - out_be32(&priv->msg_regs->pwmr, - RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ); - - - /* Hook up port-write handler */ - rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler, - IRQF_SHARED, "port-write", (void *)mport); - if (rc < 0) { - pr_err("MPC85xx RIO: unable to request inbound doorbell irq"); - goto err_out; - } - /* Enable Error Interrupt */ - out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL); - - INIT_WORK(&priv->pw_work, fsl_pw_dpc); - spin_lock_init(&priv->pw_fifo_lock); - if (kfifo_alloc(&priv->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) { - pr_err("FIFO allocation failed\n"); - rc = -ENOMEM; - goto err_out_irq; - } - - pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n", - in_be32(&priv->msg_regs->pwmr), - in_be32(&priv->msg_regs->pwsr)); - - return rc; - -err_out_irq: - free_irq(IRQ_RIO_PW(mport), (void *)mport); -err_out: - dma_free_coherent(priv->dev, RIO_PW_MSG_SIZE, - priv->port_write_msg.virt, - priv->port_write_msg.phys); - return rc; -} - static inline void fsl_rio_info(struct device *dev, u32 ccsr) { const char *str; @@ -1429,7 +349,8 @@ int fsl_rio_setup(struct platform_device *dev) dev->dev.of_node->full_name); return -EFAULT; } - dev_info(&dev->dev, "Of-device full name %s\n", dev->dev.of_node->full_name); + dev_info(&dev->dev, "Of-device full name %s\n", + dev->dev.of_node->full_name); dev_info(&dev->dev, "Regs: %pR\n", ®s); dt_range = of_get_property(dev->dev.of_node, "ranges", &rlen); @@ -1469,15 +390,7 @@ int fsl_rio_setup(struct platform_device *dev) 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; port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL); if (!port) { @@ -1507,16 +420,8 @@ int fsl_rio_setup(struct platform_device *dev) goto err_res; } - priv->pwirq = irq_of_parse_and_map(dev->dev.of_node, 0); - priv->bellirq = irq_of_parse_and_map(dev->dev.of_node, 2); - priv->txirq = irq_of_parse_and_map(dev->dev.of_node, 3); - priv->rxirq = irq_of_parse_and_map(dev->dev.of_node, 4); - dev_info(&dev->dev, "pwirq: %d, bellirq: %d, txirq: %d, rxirq %d\n", - priv->pwirq, priv->bellirq, priv->txirq, priv->rxirq); - - rio_init_dbell_res(&port->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); - rio_init_mbox_res(&port->riores[RIO_INB_MBOX_RESOURCE], 0, 0); - rio_init_mbox_res(&port->riores[RIO_OUTB_MBOX_RESOURCE], 0, 0); + priv->pwirq = irq_of_parse_and_map(dev->dev.of_node, 0); + dev_info(&dev->dev, "pwirq: %d\n", priv->pwirq); strcpy(port->name, "RIO0 mport"); priv->dev = &dev->dev; @@ -1538,7 +443,7 @@ int fsl_rio_setup(struct platform_device *dev) /* Checking the port training status */ if (in_be32((priv->regs_win + RIO_ESCSR)) & 1) { dev_err(&dev->dev, "Port is not ready. " - "Try to restart connection...\n"); + "Try to restart connection...\n"); switch (port->phy_type) { case RIO_PHY_SERIAL: /* Disable ports */ @@ -1582,10 +487,6 @@ int fsl_rio_setup(struct platform_device *dev) priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win + RIO_ATMU_REGS_OFFSET); priv->maint_atmu_regs = priv->atmu_regs + 1; - priv->dbell_atmu_regs = priv->atmu_regs + 2; - priv->msg_regs = (struct rio_msg_regs *)(priv->regs_win + - ((port->phy_type == RIO_PHY_SERIAL) ? - RIO_S_MSG_REGS_OFFSET : RIO_P_MSG_REGS_OFFSET)); /* Set to receive any dist ID for serial RapidIO controller. */ if (port->phy_type == RIO_PHY_SERIAL) @@ -1598,11 +499,8 @@ int fsl_rio_setup(struct platform_device *dev) priv->maint_win = ioremap(law_start, RIO_MAINT_WIN_SIZE); - /* Configure outbound doorbell window */ - out_be32(&priv->dbell_atmu_regs->rowbar, - (law_start + RIO_MAINT_WIN_SIZE) >> 12); - out_be32(&priv->dbell_atmu_regs->rowar, 0x8004200b); /* 4k */ - fsl_rio_doorbell_init(port); + fsl_rio_setup_rmu(port, dev->dev.of_node); + fsl_rio_port_write_init(port); return 0; diff --git a/arch/powerpc/sysdev/fsl_rio.h b/arch/powerpc/sysdev/fsl_rio.h new file mode 100644 index 00000000000..f888a1effd4 --- /dev/null +++ b/arch/powerpc/sysdev/fsl_rio.h @@ -0,0 +1,78 @@ +/* + * 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> + * Lian Minghuan-B31939 <Minghuan.Lian@freescale.com> + * Liu Gang <Gang.Liu@freescale.com> + * + * Copyright 2005 MontaVista Software, Inc. + * Matt Porter <mporter@kernel.crashing.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef __FSL_RIO_H +#define __FSL_RIO_H + +#include <linux/rio.h> +#include <linux/rio_drv.h> +#include <linux/kfifo.h> + +#define RIO_REGS_WIN(mport) (((struct rio_priv *)(mport->priv))->regs_win) + +#define RIO_MAINT_WIN_SIZE 0x400000 +#define RIO_LTLEDCSR 0x0608 + +struct rio_atmu_regs { + u32 rowtar; + u32 rowtear; + u32 rowbar; + u32 pad2; + u32 rowar; + u32 pad3[3]; +}; + +struct rio_port_write_msg { + void *virt; + dma_addr_t phys; + u32 msg_count; + u32 err_count; + u32 discard_count; +}; + +struct rio_priv { + struct device *dev; + void __iomem *regs_win; + struct rio_atmu_regs __iomem *atmu_regs; + struct rio_atmu_regs __iomem *maint_atmu_regs; + void __iomem *maint_win; + struct rio_port_write_msg port_write_msg; + int pwirq; + struct work_struct pw_work; + struct kfifo pw_fifo; + spinlock_t pw_fifo_lock; + void *rmm_handle; /* RapidIO message manager(unit) Handle */ +}; + +extern void __iomem *rio_regs_win; + +extern int fsl_rio_setup_rmu(struct rio_mport *mport, + struct device_node *node); +extern int fsl_rio_port_write_init(struct rio_mport *mport); +extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable); +extern void fsl_rio_port_error_handler(struct rio_mport *port, int offset); + +#endif diff --git a/arch/powerpc/sysdev/fsl_rmu.c b/arch/powerpc/sysdev/fsl_rmu.c new file mode 100644 index 00000000000..0a3e6cff183 --- /dev/null +++ b/arch/powerpc/sysdev/fsl_rmu.c @@ -0,0 +1,1163 @@ +/* + * Freescale MPC85xx/MPC86xx RapidIO RMU 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> + * Lian Minghuan-B31939 <Minghuan.Lian@freescale.com> + * Liu Gang <Gang.Liu@freescale.com> + * + * Copyright 2005 MontaVista Software, Inc. + * Matt Porter <mporter@kernel.crashing.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/types.h> +#include <linux/dma-mapping.h> +#include <linux/interrupt.h> +#include <linux/of_platform.h> +#include <linux/slab.h> + +#include "fsl_rio.h" + +#define GET_RMM_HANDLE(mport) \ + (((struct rio_priv *)(mport->priv))->rmm_handle) + +/* RapidIO definition irq, which read from OF-tree */ +#define IRQ_RIO_PW(m) (((struct rio_priv *)(m->priv))->pwirq) +#define IRQ_RIO_BELL(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->bellirq) +#define IRQ_RIO_TX(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->txirq) +#define IRQ_RIO_RX(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->rxirq) + +#define RIO_MIN_TX_RING_SIZE 2 +#define RIO_MAX_TX_RING_SIZE 2048 +#define RIO_MIN_RX_RING_SIZE 2 +#define RIO_MAX_RX_RING_SIZE 2048 + +#define RIO_IPWMR_SEN 0x00100000 +#define RIO_IPWMR_QFIE 0x00000100 +#define RIO_IPWMR_EIE 0x00000020 +#define RIO_IPWMR_CQ 0x00000002 +#define RIO_IPWMR_PWE 0x00000001 + +#define RIO_IPWSR_QF 0x00100000 +#define RIO_IPWSR_TE 0x00000080 +#define RIO_IPWSR_QFI 0x00000010 +#define RIO_IPWSR_PWD 0x00000008 +#define RIO_IPWSR_PWB 0x00000004 + +#define RIO_EPWISR 0x10010 +/* EPWISR Error match value */ +#define RIO_EPWISR_PINT1 0x80000000 +#define RIO_EPWISR_PINT2 0x40000000 +#define RIO_EPWISR_MU 0x00000002 +#define RIO_EPWISR_PW 0x00000001 + +#define IPWSR_CLEAR 0x98 +#define OMSR_CLEAR 0x1cb3 +#define IMSR_CLEAR 0x491 +#define IDSR_CLEAR 0x91 +#define ODSR_CLEAR 0x1c00 +#define LTLEECSR_ENABLE_ALL 0xFFC000FC +#define RIO_LTLEECSR 0x060c + +#define RIO_IM0SR 0x13064 +#define RIO_IM1SR 0x13164 +#define RIO_OM0SR 0x13004 +#define RIO_OM1SR 0x13104 + +#define RIO_P_MSG_REGS_OFFSET 0x11000 +#define RIO_S_MSG_REGS_OFFSET 0x13000 + +#define RIO_DBELL_WIN_SIZE 0x1000 + +#define RIO_MSG_OMR_MUI 0x00000002 +#define RIO_MSG_OSR_TE 0x00000080 +#define RIO_MSG_OSR_QOI 0x00000020 +#define RIO_MSG_OSR_QFI 0x00000010 +#define RIO_MSG_OSR_MUB 0x00000004 +#define RIO_MSG_OSR_EOMI 0x00000002 +#define RIO_MSG_OSR_QEI 0x00000001 + +#define RIO_MSG_IMR_MI 0x00000002 +#define RIO_MSG_ISR_TE 0x00000080 +#define RIO_MSG_ISR_QFI 0x00000010 +#define RIO_MSG_ISR_DIQI 0x00000001 + +#define RIO_MSG_DESC_SIZE 32 +#define RIO_MSG_BUFFER_SIZE 4096 + +#define DOORBELL_DMR_DI 0x00000002 +#define DOORBELL_DSR_TE 0x00000080 +#define DOORBELL_DSR_QFI 0x00000010 +#define DOORBELL_DSR_DIQI 0x00000001 +#define DOORBELL_TID_OFFSET 0x02 +#define DOORBELL_SID_OFFSET 0x04 +#define DOORBELL_INFO_OFFSET 0x06 + +#define DOORBELL_MESSAGE_SIZE 0x08 +#define DBELL_SID(x) (*(u16 *)(x + DOORBELL_SID_OFFSET)) +#define DBELL_TID(x) (*(u16 *)(x + DOORBELL_TID_OFFSET)) +#define DBELL_INF(x) (*(u16 *)(x + DOORBELL_INFO_OFFSET)) + +struct rio_msg_regs { + u32 omr; /* 0xD_3000 - Outbound message 0 mode register */ + u32 osr; /* 0xD_3004 - Outbound message 0 status register */ + u32 pad1; + u32 odqdpar; /* 0xD_300C - Outbound message 0 descriptor queue + dequeue pointer address register */ + u32 pad2; + u32 osar; /* 0xD_3014 - Outbound message 0 source address + register */ + u32 odpr; /* 0xD_3018 - Outbound message 0 destination port + register */ + u32 odatr; /* 0xD_301C - Outbound message 0 destination attributes + Register*/ + u32 odcr; /* 0xD_3020 - Outbound message 0 double-word count + register */ + u32 pad3; + u32 odqepar; /* 0xD_3028 - Outbound message 0 descriptor queue + enqueue pointer address register */ + u32 pad4[13]; + u32 imr; /* 0xD_3060 - Inbound message 0 mode register */ + u32 isr; /* 0xD_3064 - Inbound message 0 status register */ + u32 pad5; + u32 ifqdpar; /* 0xD_306C - Inbound message 0 frame queue dequeue + pointer address register*/ + u32 pad6; + u32 ifqepar; /* 0xD_3074 - Inbound message 0 frame queue enqueue + pointer address register */ + u32 pad7[226]; + u32 odmr; /* 0xD_3400 - Outbound doorbell mode register */ + u32 odsr; /* 0xD_3404 - Outbound doorbell status register */ + u32 res0[4]; + u32 oddpr; /* 0xD_3418 - Outbound doorbell destination port + register */ + u32 oddatr; /* 0xD_341c - Outbound doorbell destination attributes + register */ + u32 res1[3]; + u32 odretcr; /* 0xD_342C - Outbound doorbell retry error threshold + configuration register */ + u32 res2[12]; + u32 dmr; /* 0xD_3460 - Inbound doorbell mode register */ + u32 dsr; /* 0xD_3464 - Inbound doorbell status register */ + u32 pad8; + u32 dqdpar; /* 0xD_346C - Inbound doorbell queue dequeue Pointer + address register */ + u32 pad9; + u32 dqepar; /* 0xD_3474 - Inbound doorbell Queue enqueue pointer + address register */ + u32 pad10[26]; + u32 pwmr; /* 0xD_34E0 - Inbound port-write mode register */ + u32 pwsr; /* 0xD_34E4 - Inbound port-write status register */ + u32 epwqbar; /* 0xD_34E8 - Extended Port-Write Queue Base Address + register */ + u32 pwqbar; /* 0xD_34EC - Inbound port-write queue base address + register */ +}; + +struct rio_tx_desc { + u32 res1; + u32 saddr; + u32 dport; + u32 dattr; + u32 res2; + u32 res3; + u32 dwcnt; + u32 res4; +}; + +struct rio_dbell_ring { + void *virt; + dma_addr_t phys; +}; + +struct rio_msg_tx_ring { + void *virt; + dma_addr_t phys; + void *virt_buffer[RIO_MAX_TX_RING_SIZE]; + dma_addr_t phys_buffer[RIO_MAX_TX_RING_SIZE]; + int tx_slot; + int size; + void *dev_id; +}; + +struct rio_msg_rx_ring { + void *virt; + dma_addr_t phys; + void *virt_buffer[RIO_MAX_RX_RING_SIZE]; + int rx_slot; + int size; + void *dev_id; +}; + +struct fsl_rmu { + struct rio_atmu_regs __iomem *dbell_atmu_regs; + void __iomem *dbell_win; + struct rio_msg_regs __iomem *msg_regs; + struct rio_dbell_ring dbell_ring; + struct rio_msg_tx_ring msg_tx_ring; + struct rio_msg_rx_ring msg_rx_ring; + int bellirq; + int txirq; + int rxirq; +}; + +/** + * fsl_rio_tx_handler - MPC85xx outbound message interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles outbound message interrupts. Executes a register outbound + * mailbox event handler and acks the interrupt occurrence. + */ +static irqreturn_t +fsl_rio_tx_handler(int irq, void *dev_instance) +{ + int osr; + struct rio_mport *port = (struct rio_mport *)dev_instance; + struct fsl_rmu *rmu = GET_RMM_HANDLE(port); + + osr = in_be32(&rmu->msg_regs->osr); + + if (osr & RIO_MSG_OSR_TE) { + pr_info("RIO: outbound message transmission error\n"); + out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_TE); + goto out; + } + + if (osr & RIO_MSG_OSR_QOI) { + pr_info("RIO: outbound message queue overflow\n"); + out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_QOI); + goto out; + } + + if (osr & RIO_MSG_OSR_EOMI) { + u32 dqp = in_be32(&rmu->msg_regs->odqdpar); + int slot = (dqp - rmu->msg_tx_ring.phys) >> 5; + port->outb_msg[0].mcback(port, rmu->msg_tx_ring.dev_id, -1, + slot); + + /* Ack the end-of-message interrupt */ + out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_EOMI); + } + +out: + return IRQ_HANDLED; +} + +/** + * fsl_rio_rx_handler - MPC85xx inbound message interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles inbound message interrupts. Executes a registered inbound + * mailbox event handler and acks the interrupt occurrence. + */ +static irqreturn_t +fsl_rio_rx_handler(int irq, void *dev_instance) +{ + int isr; + struct rio_mport *port = (struct rio_mport *)dev_instance; + struct fsl_rmu *rmu = GET_RMM_HANDLE(port); + + isr = in_be32(&rmu->msg_regs->isr); + + if (isr & RIO_MSG_ISR_TE) { + pr_info("RIO: inbound message reception error\n"); + out_be32((void *)&rmu->msg_regs->isr, RIO_MSG_ISR_TE); + goto out; + } + + /* XXX Need to check/dispatch until queue empty */ + if (isr & RIO_MSG_ISR_DIQI) { + /* + * We implement *only* mailbox 0, but can receive messages + * for any mailbox/letter to that mailbox destination. So, + * make the callback with an unknown/invalid mailbox number + * argument. + */ + port->inb_msg[0].mcback(port, rmu->msg_rx_ring.dev_id, -1, -1); + + /* Ack the queueing interrupt */ + out_be32(&rmu->msg_regs->isr, RIO_MSG_ISR_DIQI); + } + +out: + return IRQ_HANDLED; +} + +/** + * fsl_rio_dbell_handler - MPC85xx doorbell interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles doorbell interrupts. Parses a list of registered + * doorbell event handlers and executes a matching event handler. + */ +static irqreturn_t +fsl_rio_dbell_handler(int irq, void *dev_instance) +{ + int dsr; + struct rio_mport *port = (struct rio_mport *)dev_instance; + struct fsl_rmu *rmu = GET_RMM_HANDLE(port); + + dsr = in_be32(&rmu->msg_regs->dsr); + + if (dsr & DOORBELL_DSR_TE) { + pr_info("RIO: doorbell reception error\n"); + out_be32(&rmu->msg_regs->dsr, DOORBELL_DSR_TE); + goto out; + } + + if (dsr & DOORBELL_DSR_QFI) { + pr_info("RIO: doorbell queue full\n"); + out_be32(&rmu->msg_regs->dsr, DOORBELL_DSR_QFI); + } + + /* XXX Need to check/dispatch until queue empty */ + if (dsr & DOORBELL_DSR_DIQI) { + u32 dmsg = + (u32) rmu->dbell_ring.virt + + (in_be32(&rmu->msg_regs->dqdpar) & 0xfff); + struct rio_dbell *dbell; + int found = 0; + + pr_debug + ("RIO: processing doorbell," + " sid %2.2x tid %2.2x info %4.4x\n", + DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); + + list_for_each_entry(dbell, &port->dbells, node) { + if ((dbell->res->start <= DBELL_INF(dmsg)) && + (dbell->res->end >= DBELL_INF(dmsg))) { + found = 1; + break; + } + } + if (found) { + dbell->dinb(port, dbell->dev_id, + DBELL_SID(dmsg), + DBELL_TID(dmsg), DBELL_INF(dmsg)); + } else { + pr_debug + ("RIO: spurious doorbell," + " sid %2.2x tid %2.2x info %4.4x\n", + DBELL_SID(dmsg), DBELL_TID(dmsg), + DBELL_INF(dmsg)); + } + setbits32(&rmu->msg_regs->dmr, DOORBELL_DMR_DI); + out_be32(&rmu->msg_regs->dsr, DOORBELL_DSR_DIQI); + } + +out: + return IRQ_HANDLED; +} + +void msg_unit_error_handler(struct rio_mport *port) +{ + struct fsl_rmu *rmu = GET_RMM_HANDLE(port); + + /*XXX: Error recovery is not implemented, we just clear errors */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); + + out_be32((u32 *)(rio_regs_win + RIO_IM0SR), IMSR_CLEAR); + out_be32((u32 *)(rio_regs_win + RIO_IM1SR), IMSR_CLEAR); + out_be32((u32 *)(rio_regs_win + RIO_OM0SR), OMSR_CLEAR); + out_be32((u32 *)(rio_regs_win + RIO_OM1SR), OMSR_CLEAR); + + out_be32(&rmu->msg_regs->odsr, ODSR_CLEAR); + out_be32(&rmu->msg_regs->dsr, IDSR_CLEAR); + + out_be32(&rmu->msg_regs->pwsr, IPWSR_CLEAR); +} + +/** + * fsl_rio_port_write_handler - MPC85xx port write interrupt handler + * @irq: Linux interrupt number + * @dev_instance: Pointer to interrupt-specific data + * + * Handles port write interrupts. Parses a list of registered + * port write event handlers and executes a matching event handler. + */ +static irqreturn_t +fsl_rio_port_write_handler(int irq, void *dev_instance) +{ + u32 ipwmr, ipwsr; + struct rio_mport *port = (struct rio_mport *)dev_instance; + struct rio_priv *priv = port->priv; + struct fsl_rmu *rmu; + u32 epwisr, tmp; + + rmu = GET_RMM_HANDLE(port); + epwisr = in_be32(priv->regs_win + RIO_EPWISR); + if (!(epwisr & RIO_EPWISR_PW)) + goto pw_done; + + ipwmr = in_be32(&rmu->msg_regs->pwmr); + ipwsr = in_be32(&rmu->msg_regs->pwsr); + +#ifdef DEBUG_PW + pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr); + if (ipwsr & RIO_IPWSR_QF) + pr_debug(" QF"); + if (ipwsr & RIO_IPWSR_TE) + pr_debug(" TE"); + if (ipwsr & RIO_IPWSR_QFI) + pr_debug(" QFI"); + if (ipwsr & RIO_IPWSR_PWD) + pr_debug(" PWD"); + if (ipwsr & RIO_IPWSR_PWB) + pr_debug(" PWB"); + pr_debug(" )\n"); +#endif + /* Schedule deferred processing if PW was received */ + if (ipwsr & RIO_IPWSR_QFI) { + /* Save PW message (if there is room in FIFO), + * otherwise discard it. + */ + if (kfifo_avail(&priv->pw_fifo) >= RIO_PW_MSG_SIZE) { + priv->port_write_msg.msg_count++; + kfifo_in(&priv->pw_fifo, priv->port_write_msg.virt, + RIO_PW_MSG_SIZE); + } else { + priv->port_write_msg.discard_count++; + pr_debug("RIO: ISR Discarded Port-Write Msg(s) (%d)\n", + priv->port_write_msg.discard_count); + } + /* Clear interrupt and issue Clear Queue command. This allows + * another port-write to be received. + */ + out_be32(&rmu->msg_regs->pwsr, RIO_IPWSR_QFI); + out_be32(&rmu->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ); + + schedule_work(&priv->pw_work); + } + + if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) { + priv->port_write_msg.err_count++; + pr_debug("RIO: Port-Write Transaction Err (%d)\n", + priv->port_write_msg.err_count); + /* Clear Transaction Error: port-write controller should be + * disabled when clearing this error + */ + out_be32(&rmu->msg_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE); + out_be32(&rmu->msg_regs->pwsr, RIO_IPWSR_TE); + out_be32(&rmu->msg_regs->pwmr, ipwmr); + } + + if (ipwsr & RIO_IPWSR_PWD) { + priv->port_write_msg.discard_count++; + pr_debug("RIO: Port Discarded Port-Write Msg(s) (%d)\n", + priv->port_write_msg.discard_count); + out_be32(&rmu->msg_regs->pwsr, RIO_IPWSR_PWD); + } + +pw_done: + if (epwisr & RIO_EPWISR_PINT1) { + tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + fsl_rio_port_error_handler(port, 0); + } + + if (epwisr & RIO_EPWISR_PINT2) { + tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + fsl_rio_port_error_handler(port, 1); + } + + if (epwisr & RIO_EPWISR_MU) { + tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + msg_unit_error_handler(port); + } + + return IRQ_HANDLED; +} + +static void fsl_pw_dpc(struct work_struct *work) +{ + struct rio_priv *priv = container_of(work, struct rio_priv, pw_work); + unsigned long flags; + u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)]; + + /* + * Process port-write messages + */ + spin_lock_irqsave(&priv->pw_fifo_lock, flags); + while (kfifo_out(&priv->pw_fifo, (unsigned char *)msg_buffer, + RIO_PW_MSG_SIZE)) { + /* Process one message */ + spin_unlock_irqrestore(&priv->pw_fifo_lock, flags); +#ifdef DEBUG_PW + { + u32 i; + pr_debug("%s : Port-Write Message:", __func__); + for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); i++) { + if ((i%4) == 0) + pr_debug("\n0x%02x: 0x%08x", i*4, + msg_buffer[i]); + else + pr_debug(" 0x%08x", msg_buffer[i]); + } + pr_debug("\n"); + } +#endif + /* Pass the port-write message to RIO core for processing */ + rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer); + spin_lock_irqsave(&priv->pw_fifo_lock, flags); + } + spin_unlock_irqrestore(&priv->pw_fifo_lock, flags); +} + +/** + * fsl_rio_pw_enable - enable/disable port-write interface init + * @mport: Master port implementing the port write unit + * @enable: 1=enable; 0=disable port-write message handling + */ +int fsl_rio_pw_enable(struct rio_mport *mport, int enable) +{ + struct fsl_rmu *rmu; + u32 rval; + + rmu = GET_RMM_HANDLE(mport); + + rval = in_be32(&rmu->msg_regs->pwmr); + + if (enable) + rval |= RIO_IPWMR_PWE; + else + rval &= ~RIO_IPWMR_PWE; + + out_be32(&rmu->msg_regs->pwmr, rval); + + return 0; +} + +/** + * fsl_rio_port_write_init - MPC85xx port write interface init + * @mport: Master port implementing the port write unit + * + * Initializes port write unit hardware and DMA buffer + * ring. Called from fsl_rio_setup(). Returns %0 on success + * or %-ENOMEM on failure. + */ + +int fsl_rio_port_write_init(struct rio_mport *mport) +{ + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu; + int rc = 0; + + rmu = GET_RMM_HANDLE(mport); + + /* Following configurations require a disabled port write controller */ + out_be32(&rmu->msg_regs->pwmr, + in_be32(&rmu->msg_regs->pwmr) & ~RIO_IPWMR_PWE); + + /* Initialize port write */ + priv->port_write_msg.virt = dma_alloc_coherent(priv->dev, + RIO_PW_MSG_SIZE, + &priv->port_write_msg.phys, GFP_KERNEL); + if (!priv->port_write_msg.virt) { + pr_err("RIO: unable allocate port write queue\n"); + return -ENOMEM; + } + + priv->port_write_msg.err_count = 0; + priv->port_write_msg.discard_count = 0; + + /* Point dequeue/enqueue pointers at first entry */ + out_be32(&rmu->msg_regs->epwqbar, 0); + out_be32(&rmu->msg_regs->pwqbar, (u32) priv->port_write_msg.phys); + + pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n", + in_be32(&rmu->msg_regs->epwqbar), + in_be32(&rmu->msg_regs->pwqbar)); + + /* Clear interrupt status IPWSR */ + out_be32(&rmu->msg_regs->pwsr, + (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD)); + + /* Configure port write contoller for snooping enable all reporting, + clear queue full */ + out_be32(&rmu->msg_regs->pwmr, + RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ); + + + /* Hook up port-write handler */ + rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler, + IRQF_SHARED, "port-write", (void *)mport); + if (rc < 0) { + pr_err("MPC85xx RIO: unable to request inbound doorbell irq"); + goto err_out; + } + /* Enable Error Interrupt */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL); + + INIT_WORK(&priv->pw_work, fsl_pw_dpc); + spin_lock_init(&priv->pw_fifo_lock); + if (kfifo_alloc(&priv->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) { + pr_err("FIFO allocation failed\n"); + rc = -ENOMEM; + goto err_out_irq; + } + + pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n", + in_be32(&rmu->msg_regs->pwmr), + in_be32(&rmu->msg_regs->pwsr)); + + return rc; + +err_out_irq: + free_irq(IRQ_RIO_PW(mport), (void *)mport); +err_out: + dma_free_coherent(priv->dev, RIO_PW_MSG_SIZE, + priv->port_write_msg.virt, + priv->port_write_msg.phys); + return rc; +} + +/** + * fsl_rio_doorbell_send - Send a MPC85xx doorbell message + * @mport: RapidIO master port info + * @index: ID of RapidIO interface + * @destid: Destination ID of target device + * @data: 16-bit info field of RapidIO doorbell message + * + * Sends a MPC85xx doorbell message. Returns %0 on success or + * %-EINVAL on failure. + */ +static int fsl_rio_doorbell_send(struct rio_mport *mport, + int index, u16 destid, u16 data) +{ + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + pr_debug("fsl_doorbell_send: index %d destid %4.4x data %4.4x\n", + index, destid, data); + switch (mport->phy_type) { + case RIO_PHY_PARALLEL: + out_be32(&rmu->dbell_atmu_regs->rowtar, destid << 22); + out_be16(rmu->dbell_win, data); + break; + case RIO_PHY_SERIAL: + /* In the serial version silicons, such as MPC8548, MPC8641, + * below operations is must be. + */ + out_be32(&rmu->msg_regs->odmr, 0x00000000); + out_be32(&rmu->msg_regs->odretcr, 0x00000004); + out_be32(&rmu->msg_regs->oddpr, destid << 16); + out_be32(&rmu->msg_regs->oddatr, data); + out_be32(&rmu->msg_regs->odmr, 0x00000001); + break; + } + + return 0; +} + +/** + * fsl_add_outb_message - Add message to the MPC85xx outbound message queue + * @mport: Master port with outbound message queue + * @rdev: Target of outbound message + * @mbox: Outbound mailbox + * @buffer: Message to add to outbound queue + * @len: Length of message + * + * Adds the @buffer message to the MPC85xx outbound message queue. Returns + * %0 on success or %-EINVAL on failure. + */ +static int +fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox, + void *buffer, size_t len) +{ + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + u32 omr; + struct rio_tx_desc *desc = (struct rio_tx_desc *)rmu->msg_tx_ring.virt + + rmu->msg_tx_ring.tx_slot; + int ret = 0; + + pr_debug("RIO: fsl_add_outb_message(): destid %4.4x mbox %d buffer " \ + "%8.8x len %8.8x\n", rdev->destid, mbox, (int)buffer, len); + + if ((len < 8) || (len > RIO_MAX_MSG_SIZE)) { + ret = -EINVAL; + goto out; + } + + /* Copy and clear rest of buffer */ + memcpy(rmu->msg_tx_ring.virt_buffer[rmu->msg_tx_ring.tx_slot], buffer, + len); + if (len < (RIO_MAX_MSG_SIZE - 4)) + memset(rmu->msg_tx_ring.virt_buffer[rmu->msg_tx_ring.tx_slot] + + len, 0, RIO_MAX_MSG_SIZE - len); + + switch (mport->phy_type) { + case RIO_PHY_PARALLEL: + /* Set mbox field for message */ + desc->dport = mbox & 0x3; + + /* Enable EOMI interrupt, set priority, and set destid */ + desc->dattr = 0x28000000 | (rdev->destid << 2); + break; + case RIO_PHY_SERIAL: + /* Set mbox field for message, and set destid */ + desc->dport = (rdev->destid << 16) | (mbox & 0x3); + + /* Enable EOMI interrupt and priority */ + desc->dattr = 0x28000000; + break; + } + + /* Set transfer size aligned to next power of 2 (in double words) */ + desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len); + + /* Set snooping and source buffer address */ + desc->saddr = 0x00000004 + | rmu->msg_tx_ring.phys_buffer[rmu->msg_tx_ring.tx_slot]; + + /* Increment enqueue pointer */ + omr = in_be32(&rmu->msg_regs->omr); + out_be32(&rmu->msg_regs->omr, omr | RIO_MSG_OMR_MUI); + + /* Go to next descriptor */ + if (++rmu->msg_tx_ring.tx_slot == rmu->msg_tx_ring.size) + rmu->msg_tx_ring.tx_slot = 0; + +out: + return ret; +} + +/** + * fsl_open_outb_mbox - Initialize MPC85xx outbound mailbox + * @mport: Master port implementing the outbound message unit + * @dev_id: Device specific pointer to pass on event + * @mbox: Mailbox to open + * @entries: Number of entries in the outbound mailbox ring + * + * Initializes buffer ring, request the outbound message interrupt, + * and enables the outbound message unit. Returns %0 on success and + * %-EINVAL or %-ENOMEM on failure. + */ +static int +fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) +{ + int i, j, rc = 0; + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + if ((entries < RIO_MIN_TX_RING_SIZE) || + (entries > RIO_MAX_TX_RING_SIZE) || (!is_power_of_2(entries))) { + rc = -EINVAL; + goto out; + } + + /* Initialize shadow copy ring */ + rmu->msg_tx_ring.dev_id = dev_id; + rmu->msg_tx_ring.size = entries; + + for (i = 0; i < rmu->msg_tx_ring.size; i++) { + rmu->msg_tx_ring.virt_buffer[i] = + dma_alloc_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, + &rmu->msg_tx_ring.phys_buffer[i], GFP_KERNEL); + if (!rmu->msg_tx_ring.virt_buffer[i]) { + rc = -ENOMEM; + for (j = 0; j < rmu->msg_tx_ring.size; j++) + if (rmu->msg_tx_ring.virt_buffer[j]) + dma_free_coherent(priv->dev, + RIO_MSG_BUFFER_SIZE, + rmu->msg_tx_ring. + virt_buffer[j], + rmu->msg_tx_ring. + phys_buffer[j]); + goto out; + } + } + + /* Initialize outbound message descriptor ring */ + rmu->msg_tx_ring.virt = dma_alloc_coherent(priv->dev, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE, + &rmu->msg_tx_ring.phys, GFP_KERNEL); + if (!rmu->msg_tx_ring.virt) { + rc = -ENOMEM; + goto out_dma; + } + memset(rmu->msg_tx_ring.virt, 0, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE); + rmu->msg_tx_ring.tx_slot = 0; + + /* Point dequeue/enqueue pointers at first entry in ring */ + out_be32(&rmu->msg_regs->odqdpar, rmu->msg_tx_ring.phys); + out_be32(&rmu->msg_regs->odqepar, rmu->msg_tx_ring.phys); + + /* Configure for snooping */ + out_be32(&rmu->msg_regs->osar, 0x00000004); + + /* Clear interrupt status */ + out_be32(&rmu->msg_regs->osr, 0x000000b3); + + /* Hook up outbound message handler */ + rc = request_irq(IRQ_RIO_TX(mport), fsl_rio_tx_handler, 0, + "msg_tx", (void *)mport); + if (rc < 0) + goto out_irq; + + /* + * Configure outbound message unit + * Snooping + * Interrupts (all enabled, except QEIE) + * Chaining mode + * Disable + */ + out_be32(&rmu->msg_regs->omr, 0x00100220); + + /* Set number of entries */ + out_be32(&rmu->msg_regs->omr, + in_be32(&rmu->msg_regs->omr) | + ((get_bitmask_order(entries) - 2) << 12)); + + /* Now enable the unit */ + out_be32(&rmu->msg_regs->omr, in_be32(&rmu->msg_regs->omr) | 0x1); + +out: + return rc; + +out_irq: + dma_free_coherent(priv->dev, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE, + rmu->msg_tx_ring.virt, rmu->msg_tx_ring.phys); + +out_dma: + for (i = 0; i < rmu->msg_tx_ring.size; i++) + dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, + rmu->msg_tx_ring.virt_buffer[i], + rmu->msg_tx_ring.phys_buffer[i]); + + return rc; +} + +/** + * fsl_close_outb_mbox - Shut down MPC85xx outbound mailbox + * @mport: Master port implementing the outbound message unit + * @mbox: Mailbox to close + * + * Disables the outbound message unit, free all buffers, and + * frees the outbound message interrupt. + */ +static void fsl_close_outb_mbox(struct rio_mport *mport, int mbox) +{ + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + /* Disable inbound message unit */ + out_be32(&rmu->msg_regs->omr, 0); + + /* Free ring */ + dma_free_coherent(priv->dev, + rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE, + rmu->msg_tx_ring.virt, rmu->msg_tx_ring.phys); + + /* Free interrupt */ + free_irq(IRQ_RIO_TX(mport), (void *)mport); +} + +/** + * fsl_open_inb_mbox - Initialize MPC85xx inbound mailbox + * @mport: Master port implementing the inbound message unit + * @dev_id: Device specific pointer to pass on event + * @mbox: Mailbox to open + * @entries: Number of entries in the inbound mailbox ring + * + * Initializes buffer ring, request the inbound message interrupt, + * and enables the inbound message unit. Returns %0 on success + * and %-EINVAL or %-ENOMEM on failure. + */ +static int +fsl_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) +{ + int i, rc = 0; + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + if ((entries < RIO_MIN_RX_RING_SIZE) || + (entries > RIO_MAX_RX_RING_SIZE) || (!is_power_of_2(entries))) { + rc = -EINVAL; + goto out; + } + + /* Initialize client buffer ring */ + rmu->msg_rx_ring.dev_id = dev_id; + rmu->msg_rx_ring.size = entries; + rmu->msg_rx_ring.rx_slot = 0; + for (i = 0; i < rmu->msg_rx_ring.size; i++) + rmu->msg_rx_ring.virt_buffer[i] = NULL; + + /* Initialize inbound message ring */ + rmu->msg_rx_ring.virt = dma_alloc_coherent(priv->dev, + rmu->msg_rx_ring.size * RIO_MAX_MSG_SIZE, + &rmu->msg_rx_ring.phys, GFP_KERNEL); + if (!rmu->msg_rx_ring.virt) { + rc = -ENOMEM; + goto out; + } + + /* Point dequeue/enqueue pointers at first entry in ring */ + out_be32(&rmu->msg_regs->ifqdpar, (u32) rmu->msg_rx_ring.phys); + out_be32(&rmu->msg_regs->ifqepar, (u32) rmu->msg_rx_ring.phys); + + /* Clear interrupt status */ + out_be32(&rmu->msg_regs->isr, 0x00000091); + + /* Hook up inbound message handler */ + rc = request_irq(IRQ_RIO_RX(mport), fsl_rio_rx_handler, 0, + "msg_rx", (void *)mport); + if (rc < 0) { + dma_free_coherent(priv->dev, RIO_MSG_BUFFER_SIZE, + rmu->msg_tx_ring.virt_buffer[i], + rmu->msg_tx_ring.phys_buffer[i]); + goto out; + } + + /* + * Configure inbound message unit: + * Snooping + * 4KB max message size + * Unmask all interrupt sources + * Disable + */ + out_be32(&rmu->msg_regs->imr, 0x001b0060); + + /* Set number of queue entries */ + setbits32(&rmu->msg_regs->imr, (get_bitmask_order(entries) - 2) << 12); + + /* Now enable the unit */ + setbits32(&rmu->msg_regs->imr, 0x1); + +out: + return rc; +} + +/** + * fsl_close_inb_mbox - Shut down MPC85xx inbound mailbox + * @mport: Master port implementing the inbound message unit + * @mbox: Mailbox to close + * + * Disables the inbound message unit, free all buffers, and + * frees the inbound message interrupt. + */ +static void fsl_close_inb_mbox(struct rio_mport *mport, int mbox) +{ + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + /* Disable inbound message unit */ + out_be32(&rmu->msg_regs->imr, 0); + + /* Free ring */ + dma_free_coherent(priv->dev, rmu->msg_rx_ring.size * RIO_MAX_MSG_SIZE, + rmu->msg_rx_ring.virt, rmu->msg_rx_ring.phys); + + /* Free interrupt */ + free_irq(IRQ_RIO_RX(mport), (void *)mport); +} + +/** + * fsl_add_inb_buffer - Add buffer to the MPC85xx inbound message queue + * @mport: Master port implementing the inbound message unit + * @mbox: Inbound mailbox number + * @buf: Buffer to add to inbound queue + * + * Adds the @buf buffer to the MPC85xx inbound message queue. Returns + * %0 on success or %-EINVAL on failure. + */ +static int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf) +{ + int rc = 0; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + + pr_debug("RIO: fsl_add_inb_buffer(), msg_rx_ring.rx_slot %d\n", + rmu->msg_rx_ring.rx_slot); + + if (rmu->msg_rx_ring.virt_buffer[rmu->msg_rx_ring.rx_slot]) { + printk(KERN_ERR + "RIO: error adding inbound buffer %d, buffer exists\n", + rmu->msg_rx_ring.rx_slot); + rc = -EINVAL; + goto out; + } + + rmu->msg_rx_ring.virt_buffer[rmu->msg_rx_ring.rx_slot] = buf; + if (++rmu->msg_rx_ring.rx_slot == rmu->msg_rx_ring.size) + rmu->msg_rx_ring.rx_slot = 0; + +out: + return rc; +} + +/** + * fsl_get_inb_message - Fetch inbound message from the MPC85xx message unit + * @mport: Master port implementing the inbound message unit + * @mbox: Inbound mailbox number + * + * Gets the next available inbound message from the inbound message queue. + * A pointer to the message is returned on success or NULL on failure. + */ +static void *fsl_get_inb_message(struct rio_mport *mport, int mbox) +{ + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + u32 phys_buf, virt_buf; + void *buf = NULL; + int buf_idx; + + phys_buf = in_be32(&rmu->msg_regs->ifqdpar); + + /* If no more messages, then bail out */ + if (phys_buf == in_be32(&rmu->msg_regs->ifqepar)) + goto out2; + + virt_buf = (u32) rmu->msg_rx_ring.virt + (phys_buf + - rmu->msg_rx_ring.phys); + buf_idx = (phys_buf - rmu->msg_rx_ring.phys) / RIO_MAX_MSG_SIZE; + buf = rmu->msg_rx_ring.virt_buffer[buf_idx]; + + if (!buf) { + printk(KERN_ERR + "RIO: inbound message copy failed, no buffers\n"); + goto out1; + } + + /* Copy max message size, caller is expected to allocate that big */ + memcpy(buf, (void *)virt_buf, RIO_MAX_MSG_SIZE); + + /* Clear the available buffer */ + rmu->msg_rx_ring.virt_buffer[buf_idx] = NULL; + +out1: + setbits32(&rmu->msg_regs->imr, RIO_MSG_IMR_MI); + +out2: + return buf; +} + +/** + * fsl_rio_doorbell_init - MPC85xx doorbell interface init + * @mport: Master port implementing the inbound doorbell unit + * + * Initializes doorbell unit hardware and inbound DMA buffer + * ring. Called from fsl_rio_setup(). Returns %0 on success + * or %-ENOMEM on failure. + */ +static int fsl_rio_doorbell_init(struct rio_mport *mport) +{ + struct rio_priv *priv = mport->priv; + struct fsl_rmu *rmu = GET_RMM_HANDLE(mport); + int rc = 0; + + /* Map outbound doorbell window immediately after maintenance window */ + rmu->dbell_win = ioremap(mport->iores.start + RIO_MAINT_WIN_SIZE, + RIO_DBELL_WIN_SIZE); + if (!rmu->dbell_win) { + printk(KERN_ERR + "RIO: unable to map outbound doorbell window\n"); + rc = -ENOMEM; + goto out; + } + + /* Initialize inbound doorbells */ + rmu->dbell_ring.virt = dma_alloc_coherent(priv->dev, 512 * + DOORBELL_MESSAGE_SIZE, &rmu->dbell_ring.phys, GFP_KERNEL); + if (!rmu->dbell_ring.virt) { + printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n"); + rc = -ENOMEM; + iounmap(rmu->dbell_win); + goto out; + } + + /* Point dequeue/enqueue pointers at first entry in ring */ + out_be32(&rmu->msg_regs->dqdpar, (u32) rmu->dbell_ring.phys); + out_be32(&rmu->msg_regs->dqepar, (u32) rmu->dbell_ring.phys); + + /* Clear interrupt status */ + out_be32(&rmu->msg_regs->dsr, 0x00000091); + + /* Hook up doorbell handler */ + rc = request_irq(IRQ_RIO_BELL(mport), fsl_rio_dbell_handler, 0, + "dbell_rx", (void *)mport); + if (rc < 0) { + iounmap(rmu->dbell_win); + dma_free_coherent(priv->dev, 512 * DOORBELL_MESSAGE_SIZE, + rmu->dbell_ring.virt, rmu->dbell_ring.phys); + printk(KERN_ERR + "MPC85xx RIO: unable to request inbound doorbell irq"); + goto out; + } + + /* Configure doorbells for snooping, 512 entries, and enable */ + out_be32(&rmu->msg_regs->dmr, 0x00108161); + +out: + return rc; +} + +int fsl_rio_setup_rmu(struct rio_mport *mport, struct device_node *node) +{ + struct rio_priv *priv; + struct fsl_rmu *rmu; + struct rio_ops *ops; + + if (!mport || !mport->priv || !node) + return -1; + + rmu = kzalloc(sizeof(struct fsl_rmu), GFP_KERNEL); + if (!rmu) + return -ENOMEM; + + priv = mport->priv; + priv->rmm_handle = rmu; + rmu->dbell_atmu_regs = priv->atmu_regs + 2; + rmu->msg_regs = (struct rio_msg_regs *)(priv->regs_win + + ((mport->phy_type == RIO_PHY_SERIAL) ? + RIO_S_MSG_REGS_OFFSET : RIO_P_MSG_REGS_OFFSET)); + + rmu->bellirq = irq_of_parse_and_map(node, 2); + rmu->txirq = irq_of_parse_and_map(node, 3); + rmu->rxirq = irq_of_parse_and_map(node, 4); + dev_info(priv->dev, "bellirq: %d, txirq: %d, rxirq %d\n", + rmu->bellirq, rmu->txirq, rmu->rxirq); + + ops = mport->ops; + + ops->dsend = fsl_rio_doorbell_send; + 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; + + rio_init_dbell_res(&mport->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); + rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 0); + rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 0); + + /* Configure outbound doorbell window */ + out_be32(&rmu->dbell_atmu_regs->rowbar, + (mport->iores.start + RIO_MAINT_WIN_SIZE) >> 12); + /* 4k window size */ + out_be32(&rmu->dbell_atmu_regs->rowar, 0x8004200b); + + fsl_rio_doorbell_init(mport); + + return 0; +} |