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[RAPIDIO] Add RapidIO multi mport support

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The original RapidIO driver suppose there is only one mpc85xx RIO controller
in system.  So, some data structures are defined as mpc85xx_rio global, such
as 'regs_win', 'dbell_ring', 'msg_tx_ring'.  Now, I changed them to mport's
private members.  And you can define multi RIO OF-nodes in dts file for multi
RapidIO controller in one processor, such as PCI/PCI-Ex host controllers in
Freescale's silicon.  And the mport operation function declaration should be
changed to know which RapidIO controller is target.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Zhang Wei 2008-04-18 13:33:41 -07:00 committed by Paul Mackerras
parent 5a7b60ed88
commit ad1e9380b1
3 changed files with 237 additions and 184 deletions
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393
arch/powerpc/sysdev/fsl_rio.c
View file

@ -1,6 +1,9 @@
/* /*
* Freescale MPC85xx/MPC86xx RapidIO support * Freescale MPC85xx/MPC86xx RapidIO support
* *
* Copyright (C) 2007, 2008 Freescale Semiconductor, Inc.
* Zhang Wei <wei.zhang@freescale.com>
*
* Copyright 2005 MontaVista Software, Inc. * Copyright 2005 MontaVista Software, Inc.
* Matt Porter <mporter@kernel.crashing.org> * Matt Porter <mporter@kernel.crashing.org>
* *
@ -20,6 +23,11 @@
#include <asm/io.h> #include <asm/io.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 RIO_REGS_BASE (CCSRBAR + 0xc0000) #define RIO_REGS_BASE (CCSRBAR + 0xc0000)
#define RIO_ATMU_REGS_OFFSET 0x10c00 #define RIO_ATMU_REGS_OFFSET 0x10c00
#define RIO_MSG_REGS_OFFSET 0x11000 #define RIO_MSG_REGS_OFFSET 0x11000
@ -112,20 +120,12 @@ struct rio_tx_desc {
u32 res4; u32 res4;
}; };
static u32 regs_win; struct rio_dbell_ring {
static struct rio_atmu_regs *atmu_regs;
static struct rio_atmu_regs *maint_atmu_regs;
static struct rio_atmu_regs *dbell_atmu_regs;
static u32 dbell_win;
static u32 maint_win;
static struct rio_msg_regs *msg_regs;
static struct rio_dbell_ring {
void *virt; void *virt;
dma_addr_t phys; dma_addr_t phys;
} dbell_ring; };
static struct rio_msg_tx_ring { struct rio_msg_tx_ring {
void *virt; void *virt;
dma_addr_t phys; dma_addr_t phys;
void *virt_buffer[RIO_MAX_TX_RING_SIZE]; void *virt_buffer[RIO_MAX_TX_RING_SIZE];
@ -133,16 +133,32 @@ static struct rio_msg_tx_ring {
int tx_slot; int tx_slot;
int size; int size;
void *dev_id; void *dev_id;
} msg_tx_ring; };
static struct rio_msg_rx_ring { struct rio_msg_rx_ring {
void *virt; void *virt;
dma_addr_t phys; dma_addr_t phys;
void *virt_buffer[RIO_MAX_RX_RING_SIZE]; void *virt_buffer[RIO_MAX_RX_RING_SIZE];
int rx_slot; int rx_slot;
int size; int size;
void *dev_id; void *dev_id;
} msg_rx_ring; };
struct rio_priv {
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;
int bellirq;
int txirq;
int rxirq;
};
/** /**
* fsl_rio_doorbell_send - Send a MPC85xx doorbell message * fsl_rio_doorbell_send - Send a MPC85xx doorbell message
@ -153,12 +169,14 @@ static struct rio_msg_rx_ring {
* Sends a MPC85xx doorbell message. Returns %0 on success or * Sends a MPC85xx doorbell message. Returns %0 on success or
* %-EINVAL on failure. * %-EINVAL on failure.
*/ */
static int fsl_rio_doorbell_send(int index, u16 destid, u16 data) 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", pr_debug("fsl_doorbell_send: index %d destid %4.4x data %4.4x\n",
index, destid, data); index, destid, data);
out_be32((void *)&dbell_atmu_regs->rowtar, destid << 22); out_be32(&priv->dbell_atmu_regs->rowtar, destid << 22);
out_be16((void *)(dbell_win), data); out_be16(priv->dbell_win, data);
return 0; return 0;
} }
@ -173,11 +191,13 @@ static int fsl_rio_doorbell_send(int index, u16 destid, u16 data)
* Generates a MPC85xx local configuration space read. Returns %0 on * Generates a MPC85xx local configuration space read. Returns %0 on
* success or %-EINVAL on failure. * success or %-EINVAL on failure.
*/ */
static int fsl_local_config_read(int index, u32 offset, int len, u32 *data) 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, pr_debug("fsl_local_config_read: index %d offset %8.8x\n", index,
offset); offset);
*data = in_be32((void *)(regs_win + offset)); *data = in_be32(priv->regs_win + offset);
return 0; return 0;
} }
@ -192,12 +212,14 @@ static int fsl_local_config_read(int index, u32 offset, int len, u32 *data)
* Generates a MPC85xx local configuration space write. Returns %0 on * Generates a MPC85xx local configuration space write. Returns %0 on
* success or %-EINVAL on failure. * success or %-EINVAL on failure.
*/ */
static int fsl_local_config_write(int index, u32 offset, int len, u32 data) 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 pr_debug
("fsl_local_config_write: index %d offset %8.8x data %8.8x\n", ("fsl_local_config_write: index %d offset %8.8x data %8.8x\n",
index, offset, data); index, offset, data);
out_be32((void *)(regs_win + offset), data); out_be32(priv->regs_win + offset, data);
return 0; return 0;
} }
@ -215,18 +237,19 @@ static int fsl_local_config_write(int index, u32 offset, int len, u32 data)
* success or %-EINVAL on failure. * success or %-EINVAL on failure.
*/ */
static int static int
fsl_rio_config_read(int index, u16 destid, u8 hopcount, u32 offset, int len, fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid,
u32 * val) u8 hopcount, u32 offset, int len, u32 *val)
{ {
struct rio_priv *priv = mport->priv;
u8 *data; u8 *data;
pr_debug 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); index, destid, hopcount, offset, len);
out_be32((void *)&maint_atmu_regs->rowtar, out_be32(&priv->maint_atmu_regs->rowtar,
(destid << 22) | (hopcount << 12) | ((offset & ~0x3) >> 9)); (destid << 22) | (hopcount << 12) | ((offset & ~0x3) >> 9));
data = (u8 *) maint_win + offset; data = (u8 *) priv->maint_win + offset;
switch (len) { switch (len) {
case 1: case 1:
*val = in_8((u8 *) data); *val = in_8((u8 *) data);
@ -255,17 +278,18 @@ fsl_rio_config_read(int index, u16 destid, u8 hopcount, u32 offset, int len,
* success or %-EINVAL on failure. * success or %-EINVAL on failure.
*/ */
static int static int
fsl_rio_config_write(int index, u16 destid, u8 hopcount, u32 offset, fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid,
int len, u32 val) u8 hopcount, u32 offset, int len, u32 val)
{ {
struct rio_priv *priv = mport->priv;
u8 *data; u8 *data;
pr_debug 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); index, destid, hopcount, offset, len, val);
out_be32((void *)&maint_atmu_regs->rowtar, out_be32(&priv->maint_atmu_regs->rowtar,
(destid << 22) | (hopcount << 12) | ((offset & ~0x3) >> 9)); (destid << 22) | (hopcount << 12) | ((offset & ~0x3) >> 9));
data = (u8 *) maint_win + offset; data = (u8 *) priv->maint_win + offset;
switch (len) { switch (len) {
case 1: case 1:
out_8((u8 *) data, val); out_8((u8 *) data, val);
@ -296,9 +320,10 @@ int
rio_hw_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox, rio_hw_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
void *buffer, size_t len) void *buffer, size_t len)
{ {
struct rio_priv *priv = mport->priv;
u32 omr; u32 omr;
struct rio_tx_desc *desc = struct rio_tx_desc *desc = (struct rio_tx_desc *)priv->msg_tx_ring.virt
(struct rio_tx_desc *)msg_tx_ring.virt + msg_tx_ring.tx_slot; + priv->msg_tx_ring.tx_slot;
int ret = 0; int ret = 0;
pr_debug pr_debug
@ -311,11 +336,11 @@ rio_hw_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
} }
/* Copy and clear rest of buffer */ /* Copy and clear rest of buffer */
memcpy(msg_tx_ring.virt_buffer[msg_tx_ring.tx_slot], buffer, len); memcpy(priv->msg_tx_ring.virt_buffer[priv->msg_tx_ring.tx_slot], buffer,
len);
if (len < (RIO_MAX_MSG_SIZE - 4)) if (len < (RIO_MAX_MSG_SIZE - 4))
memset((void *)((u32) msg_tx_ring. memset(priv->msg_tx_ring.virt_buffer[priv->msg_tx_ring.tx_slot]
virt_buffer[msg_tx_ring.tx_slot] + len), 0, + len, 0, RIO_MAX_MSG_SIZE - len);
RIO_MAX_MSG_SIZE - len);
/* Set mbox field for message */ /* Set mbox field for message */
desc->dport = mbox & 0x3; desc->dport = mbox & 0x3;
@ -327,15 +352,16 @@ rio_hw_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len); desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len);
/* Set snooping and source buffer address */ /* Set snooping and source buffer address */
desc->saddr = 0x00000004 | msg_tx_ring.phys_buffer[msg_tx_ring.tx_slot]; desc->saddr = 0x00000004
| priv->msg_tx_ring.phys_buffer[priv->msg_tx_ring.tx_slot];
/* Increment enqueue pointer */ /* Increment enqueue pointer */
omr = in_be32((void *)&msg_regs->omr); omr = in_be32(&priv->msg_regs->omr);
out_be32((void *)&msg_regs->omr, omr | RIO_MSG_OMR_MUI); out_be32(&priv->msg_regs->omr, omr | RIO_MSG_OMR_MUI);
/* Go to next descriptor */ /* Go to next descriptor */
if (++msg_tx_ring.tx_slot == msg_tx_ring.size) if (++priv->msg_tx_ring.tx_slot == priv->msg_tx_ring.size)
msg_tx_ring.tx_slot = 0; priv->msg_tx_ring.tx_slot = 0;
out: out:
return ret; return ret;
@ -356,28 +382,30 @@ fsl_rio_tx_handler(int irq, void *dev_instance)
{ {
int osr; int osr;
struct rio_mport *port = (struct rio_mport *)dev_instance; struct rio_mport *port = (struct rio_mport *)dev_instance;
struct rio_priv *priv = port->priv;
osr = in_be32((void *)&msg_regs->osr); osr = in_be32(&priv->msg_regs->osr);
if (osr & RIO_MSG_OSR_TE) { if (osr & RIO_MSG_OSR_TE) {
pr_info("RIO: outbound message transmission error\n"); pr_info("RIO: outbound message transmission error\n");
out_be32((void *)&msg_regs->osr, RIO_MSG_OSR_TE); out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_TE);
goto out; goto out;
} }
if (osr & RIO_MSG_OSR_QOI) { if (osr & RIO_MSG_OSR_QOI) {
pr_info("RIO: outbound message queue overflow\n"); pr_info("RIO: outbound message queue overflow\n");
out_be32((void *)&msg_regs->osr, RIO_MSG_OSR_QOI); out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_QOI);
goto out; goto out;
} }
if (osr & RIO_MSG_OSR_EOMI) { if (osr & RIO_MSG_OSR_EOMI) {
u32 dqp = in_be32((void *)&msg_regs->odqdpar); u32 dqp = in_be32(&priv->msg_regs->odqdpar);
int slot = (dqp - msg_tx_ring.phys) >> 5; int slot = (dqp - priv->msg_tx_ring.phys) >> 5;
port->outb_msg[0].mcback(port, msg_tx_ring.dev_id, -1, slot); port->outb_msg[0].mcback(port, priv->msg_tx_ring.dev_id, -1,
slot);
/* Ack the end-of-message interrupt */ /* Ack the end-of-message interrupt */
out_be32((void *)&msg_regs->osr, RIO_MSG_OSR_EOMI); out_be32(&priv->msg_regs->osr, RIO_MSG_OSR_EOMI);
} }
out: out:
@ -398,6 +426,7 @@ fsl_rio_tx_handler(int irq, void *dev_instance)
int rio_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) int rio_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries)
{ {
int i, j, rc = 0; int i, j, rc = 0;
struct rio_priv *priv = mport->priv;
if ((entries < RIO_MIN_TX_RING_SIZE) || if ((entries < RIO_MIN_TX_RING_SIZE) ||
(entries > RIO_MAX_TX_RING_SIZE) || (!is_power_of_2(entries))) { (entries > RIO_MAX_TX_RING_SIZE) || (!is_power_of_2(entries))) {
@ -406,54 +435,53 @@ int rio_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entr
} }
/* Initialize shadow copy ring */ /* Initialize shadow copy ring */
msg_tx_ring.dev_id = dev_id; priv->msg_tx_ring.dev_id = dev_id;
msg_tx_ring.size = entries; priv->msg_tx_ring.size = entries;
for (i = 0; i < msg_tx_ring.size; i++) { for (i = 0; i < priv->msg_tx_ring.size; i++) {
if (! priv->msg_tx_ring.virt_buffer[i] =
(msg_tx_ring.virt_buffer[i] = dma_alloc_coherent(NULL, RIO_MSG_BUFFER_SIZE,
dma_alloc_coherent(NULL, RIO_MSG_BUFFER_SIZE, &priv->msg_tx_ring.phys_buffer[i], GFP_KERNEL);
&msg_tx_ring.phys_buffer[i], if (!priv->msg_tx_ring.virt_buffer[i]) {
GFP_KERNEL))) {
rc = -ENOMEM; rc = -ENOMEM;
for (j = 0; j < msg_tx_ring.size; j++) for (j = 0; j < priv->msg_tx_ring.size; j++)
if (msg_tx_ring.virt_buffer[j]) if (priv->msg_tx_ring.virt_buffer[j])
dma_free_coherent(NULL, dma_free_coherent(NULL,
RIO_MSG_BUFFER_SIZE, RIO_MSG_BUFFER_SIZE,
msg_tx_ring. priv->msg_tx_ring.
virt_buffer[j], virt_buffer[j],
msg_tx_ring. priv->msg_tx_ring.
phys_buffer[j]); phys_buffer[j]);
goto out; goto out;
} }
} }
/* Initialize outbound message descriptor ring */ /* Initialize outbound message descriptor ring */
if (!(msg_tx_ring.virt = dma_alloc_coherent(NULL, priv->msg_tx_ring.virt = dma_alloc_coherent(NULL,
msg_tx_ring.size * priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE,
RIO_MSG_DESC_SIZE, &priv->msg_tx_ring.phys, GFP_KERNEL);
&msg_tx_ring.phys, if (!priv->msg_tx_ring.virt) {
GFP_KERNEL))) {
rc = -ENOMEM; rc = -ENOMEM;
goto out_dma; goto out_dma;
} }
memset(msg_tx_ring.virt, 0, msg_tx_ring.size * RIO_MSG_DESC_SIZE); memset(priv->msg_tx_ring.virt, 0,
msg_tx_ring.tx_slot = 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 */ /* Point dequeue/enqueue pointers at first entry in ring */
out_be32((void *)&msg_regs->odqdpar, msg_tx_ring.phys); out_be32(&priv->msg_regs->odqdpar, priv->msg_tx_ring.phys);
out_be32((void *)&msg_regs->odqepar, msg_tx_ring.phys); out_be32(&priv->msg_regs->odqepar, priv->msg_tx_ring.phys);
/* Configure for snooping */ /* Configure for snooping */
out_be32((void *)&msg_regs->osar, 0x00000004); out_be32(&priv->msg_regs->osar, 0x00000004);
/* Clear interrupt status */ /* Clear interrupt status */
out_be32((void *)&msg_regs->osr, 0x000000b3); out_be32(&priv->msg_regs->osr, 0x000000b3);
/* Hook up outbound message handler */ /* Hook up outbound message handler */
if ((rc = rc = request_irq(IRQ_RIO_TX(mport), fsl_rio_tx_handler, 0,
request_irq(MPC85xx_IRQ_RIO_TX, fsl_rio_tx_handler, 0, "msg_tx", (void *)mport);
"msg_tx", (void *)mport)) < 0) if (rc < 0)
goto out_irq; goto out_irq;
/* /*
@ -463,28 +491,28 @@ int rio_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entr
* Chaining mode * Chaining mode
* Disable * Disable
*/ */
out_be32((void *)&msg_regs->omr, 0x00100220); out_be32(&priv->msg_regs->omr, 0x00100220);
/* Set number of entries */ /* Set number of entries */
out_be32((void *)&msg_regs->omr, out_be32(&priv->msg_regs->omr,
in_be32((void *)&msg_regs->omr) | in_be32(&priv->msg_regs->omr) |
((get_bitmask_order(entries) - 2) << 12)); ((get_bitmask_order(entries) - 2) << 12));
/* Now enable the unit */ /* Now enable the unit */
out_be32((void *)&msg_regs->omr, in_be32((void *)&msg_regs->omr) | 0x1); out_be32(&priv->msg_regs->omr, in_be32(&priv->msg_regs->omr) | 0x1);
out: out:
return rc; return rc;
out_irq: out_irq:
dma_free_coherent(NULL, msg_tx_ring.size * RIO_MSG_DESC_SIZE, dma_free_coherent(NULL, priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE,
msg_tx_ring.virt, msg_tx_ring.phys); priv->msg_tx_ring.virt, priv->msg_tx_ring.phys);
out_dma: out_dma:
for (i = 0; i < msg_tx_ring.size; i++) for (i = 0; i < priv->msg_tx_ring.size; i++)
dma_free_coherent(NULL, RIO_MSG_BUFFER_SIZE, dma_free_coherent(NULL, RIO_MSG_BUFFER_SIZE,
msg_tx_ring.virt_buffer[i], priv->msg_tx_ring.virt_buffer[i],
msg_tx_ring.phys_buffer[i]); priv->msg_tx_ring.phys_buffer[i]);
return rc; return rc;
} }
@ -499,15 +527,16 @@ int rio_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entr
*/ */
void rio_close_outb_mbox(struct rio_mport *mport, int mbox) void rio_close_outb_mbox(struct rio_mport *mport, int mbox)
{ {
struct rio_priv *priv = mport->priv;
/* Disable inbound message unit */ /* Disable inbound message unit */
out_be32((void *)&msg_regs->omr, 0); out_be32(&priv->msg_regs->omr, 0);
/* Free ring */ /* Free ring */
dma_free_coherent(NULL, msg_tx_ring.size * RIO_MSG_DESC_SIZE, dma_free_coherent(NULL, priv->msg_tx_ring.size * RIO_MSG_DESC_SIZE,
msg_tx_ring.virt, msg_tx_ring.phys); priv->msg_tx_ring.virt, priv->msg_tx_ring.phys);
/* Free interrupt */ /* Free interrupt */
free_irq(MPC85xx_IRQ_RIO_TX, (void *)mport); free_irq(IRQ_RIO_TX(mport), (void *)mport);
} }
/** /**
@ -523,12 +552,13 @@ fsl_rio_rx_handler(int irq, void *dev_instance)
{ {
int isr; int isr;
struct rio_mport *port = (struct rio_mport *)dev_instance; struct rio_mport *port = (struct rio_mport *)dev_instance;
struct rio_priv *priv = port->priv;
isr = in_be32((void *)&msg_regs->isr); isr = in_be32(&priv->msg_regs->isr);
if (isr & RIO_MSG_ISR_TE) { if (isr & RIO_MSG_ISR_TE) {
pr_info("RIO: inbound message reception error\n"); pr_info("RIO: inbound message reception error\n");
out_be32((void *)&msg_regs->isr, RIO_MSG_ISR_TE); out_be32((void *)&priv->msg_regs->isr, RIO_MSG_ISR_TE);
goto out; goto out;
} }
@ -540,10 +570,10 @@ fsl_rio_rx_handler(int irq, void *dev_instance)
* make the callback with an unknown/invalid mailbox number * make the callback with an unknown/invalid mailbox number
* argument. * argument.
*/ */
port->inb_msg[0].mcback(port, msg_rx_ring.dev_id, -1, -1); port->inb_msg[0].mcback(port, priv->msg_rx_ring.dev_id, -1, -1);
/* Ack the queueing interrupt */ /* Ack the queueing interrupt */
out_be32((void *)&msg_regs->isr, RIO_MSG_ISR_DIQI); out_be32(&priv->msg_regs->isr, RIO_MSG_ISR_DIQI);
} }
out: out:
@ -564,6 +594,7 @@ fsl_rio_rx_handler(int irq, void *dev_instance)
int rio_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries) int rio_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries)
{ {
int i, rc = 0; int i, rc = 0;
struct rio_priv *priv = mport->priv;
if ((entries < RIO_MIN_RX_RING_SIZE) || if ((entries < RIO_MIN_RX_RING_SIZE) ||
(entries > RIO_MAX_RX_RING_SIZE) || (!is_power_of_2(entries))) { (entries > RIO_MAX_RX_RING_SIZE) || (!is_power_of_2(entries))) {
@ -572,36 +603,35 @@ int rio_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entri
} }
/* Initialize client buffer ring */ /* Initialize client buffer ring */
msg_rx_ring.dev_id = dev_id; priv->msg_rx_ring.dev_id = dev_id;
msg_rx_ring.size = entries; priv->msg_rx_ring.size = entries;
msg_rx_ring.rx_slot = 0; priv->msg_rx_ring.rx_slot = 0;
for (i = 0; i < msg_rx_ring.size; i++) for (i = 0; i < priv->msg_rx_ring.size; i++)
msg_rx_ring.virt_buffer[i] = NULL; priv->msg_rx_ring.virt_buffer[i] = NULL;
/* Initialize inbound message ring */ /* Initialize inbound message ring */
if (!(msg_rx_ring.virt = dma_alloc_coherent(NULL, priv->msg_rx_ring.virt = dma_alloc_coherent(NULL,
msg_rx_ring.size * priv->msg_rx_ring.size * RIO_MAX_MSG_SIZE,
RIO_MAX_MSG_SIZE, &priv->msg_rx_ring.phys, GFP_KERNEL);
&msg_rx_ring.phys, if (!priv->msg_rx_ring.virt) {
GFP_KERNEL))) {
rc = -ENOMEM; rc = -ENOMEM;
goto out; goto out;
} }
/* Point dequeue/enqueue pointers at first entry in ring */ /* Point dequeue/enqueue pointers at first entry in ring */
out_be32((void *)&msg_regs->ifqdpar, (u32) msg_rx_ring.phys); out_be32(&priv->msg_regs->ifqdpar, (u32) priv->msg_rx_ring.phys);
out_be32((void *)&msg_regs->ifqepar, (u32) msg_rx_ring.phys); out_be32(&priv->msg_regs->ifqepar, (u32) priv->msg_rx_ring.phys);
/* Clear interrupt status */ /* Clear interrupt status */
out_be32((void *)&msg_regs->isr, 0x00000091); out_be32(&priv->msg_regs->isr, 0x00000091);
/* Hook up inbound message handler */ /* Hook up inbound message handler */
if ((rc = rc = request_irq(IRQ_RIO_RX(mport), fsl_rio_rx_handler, 0,
request_irq(MPC85xx_IRQ_RIO_RX, fsl_rio_rx_handler, 0, "msg_rx", (void *)mport);
"msg_rx", (void *)mport)) < 0) { if (rc < 0) {
dma_free_coherent(NULL, RIO_MSG_BUFFER_SIZE, dma_free_coherent(NULL, RIO_MSG_BUFFER_SIZE,
msg_tx_ring.virt_buffer[i], priv->msg_tx_ring.virt_buffer[i],
msg_tx_ring.phys_buffer[i]); priv->msg_tx_ring.phys_buffer[i]);
goto out; goto out;
} }
@ -612,15 +642,13 @@ int rio_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entri
* Unmask all interrupt sources * Unmask all interrupt sources
* Disable * Disable
*/ */
out_be32((void *)&msg_regs->imr, 0x001b0060); out_be32(&priv->msg_regs->imr, 0x001b0060);
/* Set number of queue entries */ /* Set number of queue entries */
out_be32((void *)&msg_regs->imr, setbits32(&priv->msg_regs->imr, (get_bitmask_order(entries) - 2) << 12);
in_be32((void *)&msg_regs->imr) |
((get_bitmask_order(entries) - 2) << 12));
/* Now enable the unit */ /* Now enable the unit */
out_be32((void *)&msg_regs->imr, in_be32((void *)&msg_regs->imr) | 0x1); setbits32(&priv->msg_regs->imr, 0x1);
out: out:
return rc; return rc;
@ -636,15 +664,16 @@ int rio_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entri
*/ */
void rio_close_inb_mbox(struct rio_mport *mport, int mbox) void rio_close_inb_mbox(struct rio_mport *mport, int mbox)
{ {
struct rio_priv *priv = mport->priv;
/* Disable inbound message unit */ /* Disable inbound message unit */
out_be32((void *)&msg_regs->imr, 0); out_be32(&priv->msg_regs->imr, 0);
/* Free ring */ /* Free ring */
dma_free_coherent(NULL, msg_rx_ring.size * RIO_MAX_MSG_SIZE, dma_free_coherent(NULL, priv->msg_rx_ring.size * RIO_MAX_MSG_SIZE,
msg_rx_ring.virt, msg_rx_ring.phys); priv->msg_rx_ring.virt, priv->msg_rx_ring.phys);
/* Free interrupt */ /* Free interrupt */
free_irq(MPC85xx_IRQ_RIO_RX, (void *)mport); free_irq(IRQ_RIO_RX(mport), (void *)mport);
} }
/** /**
@ -659,21 +688,22 @@ void rio_close_inb_mbox(struct rio_mport *mport, int mbox)
int rio_hw_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf) int rio_hw_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf)
{ {
int rc = 0; int rc = 0;
struct rio_priv *priv = mport->priv;
pr_debug("RIO: rio_hw_add_inb_buffer(), msg_rx_ring.rx_slot %d\n", pr_debug("RIO: rio_hw_add_inb_buffer(), msg_rx_ring.rx_slot %d\n",
msg_rx_ring.rx_slot); priv->msg_rx_ring.rx_slot);
if (msg_rx_ring.virt_buffer[msg_rx_ring.rx_slot]) { if (priv->msg_rx_ring.virt_buffer[priv->msg_rx_ring.rx_slot]) {
printk(KERN_ERR printk(KERN_ERR
"RIO: error adding inbound buffer %d, buffer exists\n", "RIO: error adding inbound buffer %d, buffer exists\n",
msg_rx_ring.rx_slot); priv->msg_rx_ring.rx_slot);
rc = -EINVAL; rc = -EINVAL;
goto out; goto out;
} }
msg_rx_ring.virt_buffer[msg_rx_ring.rx_slot] = buf; priv->msg_rx_ring.virt_buffer[priv->msg_rx_ring.rx_slot] = buf;
if (++msg_rx_ring.rx_slot == msg_rx_ring.size) if (++priv->msg_rx_ring.rx_slot == priv->msg_rx_ring.size)
msg_rx_ring.rx_slot = 0; priv->msg_rx_ring.rx_slot = 0;
out: out:
return rc; return rc;
@ -691,20 +721,21 @@ EXPORT_SYMBOL_GPL(rio_hw_add_inb_buffer);
*/ */
void *rio_hw_get_inb_message(struct rio_mport *mport, int mbox) void *rio_hw_get_inb_message(struct rio_mport *mport, int mbox)
{ {
u32 imr; struct rio_priv *priv = mport->priv;
u32 phys_buf, virt_buf; u32 phys_buf, virt_buf;
void *buf = NULL; void *buf = NULL;
int buf_idx; int buf_idx;
phys_buf = in_be32((void *)&msg_regs->ifqdpar); phys_buf = in_be32(&priv->msg_regs->ifqdpar);
/* If no more messages, then bail out */ /* If no more messages, then bail out */
if (phys_buf == in_be32((void *)&msg_regs->ifqepar)) if (phys_buf == in_be32(&priv->msg_regs->ifqepar))
goto out2; goto out2;
virt_buf = (u32) msg_rx_ring.virt + (phys_buf - msg_rx_ring.phys); virt_buf = (u32) priv->msg_rx_ring.virt + (phys_buf
buf_idx = (phys_buf - msg_rx_ring.phys) / RIO_MAX_MSG_SIZE; - priv->msg_rx_ring.phys);
buf = msg_rx_ring.virt_buffer[buf_idx]; buf_idx = (phys_buf - priv->msg_rx_ring.phys) / RIO_MAX_MSG_SIZE;
buf = priv->msg_rx_ring.virt_buffer[buf_idx];
if (!buf) { if (!buf) {
printk(KERN_ERR printk(KERN_ERR
@ -716,11 +747,10 @@ void *rio_hw_get_inb_message(struct rio_mport *mport, int mbox)
memcpy(buf, (void *)virt_buf, RIO_MAX_MSG_SIZE); memcpy(buf, (void *)virt_buf, RIO_MAX_MSG_SIZE);
/* Clear the available buffer */ /* Clear the available buffer */
msg_rx_ring.virt_buffer[buf_idx] = NULL; priv->msg_rx_ring.virt_buffer[buf_idx] = NULL;
out1: out1:
imr = in_be32((void *)&msg_regs->imr); setbits32(&priv->msg_regs->imr, RIO_MSG_IMR_MI);
out_be32((void *)&msg_regs->imr, imr | RIO_MSG_IMR_MI);
out2: out2:
return buf; return buf;
@ -741,27 +771,27 @@ fsl_rio_dbell_handler(int irq, void *dev_instance)
{ {
int dsr; int dsr;
struct rio_mport *port = (struct rio_mport *)dev_instance; struct rio_mport *port = (struct rio_mport *)dev_instance;
struct rio_priv *priv = port->priv;
dsr = in_be32((void *)&msg_regs->dsr); dsr = in_be32(&priv->msg_regs->dsr);
if (dsr & DOORBELL_DSR_TE) { if (dsr & DOORBELL_DSR_TE) {
pr_info("RIO: doorbell reception error\n"); pr_info("RIO: doorbell reception error\n");
out_be32((void *)&msg_regs->dsr, DOORBELL_DSR_TE); out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_TE);
goto out; goto out;
} }
if (dsr & DOORBELL_DSR_QFI) { if (dsr & DOORBELL_DSR_QFI) {
pr_info("RIO: doorbell queue full\n"); pr_info("RIO: doorbell queue full\n");
out_be32((void *)&msg_regs->dsr, DOORBELL_DSR_QFI); out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_QFI);
goto out; goto out;
} }
/* XXX Need to check/dispatch until queue empty */ /* XXX Need to check/dispatch until queue empty */
if (dsr & DOORBELL_DSR_DIQI) { if (dsr & DOORBELL_DSR_DIQI) {
u32 dmsg = u32 dmsg =
(u32) dbell_ring.virt + (u32) priv->dbell_ring.virt +
(in_be32((void *)&msg_regs->dqdpar) & 0xfff); (in_be32(&priv->msg_regs->dqdpar) & 0xfff);
u32 dmr;
struct rio_dbell *dbell; struct rio_dbell *dbell;
int found = 0; int found = 0;
@ -784,9 +814,8 @@ fsl_rio_dbell_handler(int irq, void *dev_instance)
("RIO: spurious doorbell, sid %2.2x tid %2.2x info %4.4x\n", ("RIO: spurious doorbell, sid %2.2x tid %2.2x info %4.4x\n",
DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg)); DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg));
} }
dmr = in_be32((void *)&msg_regs->dmr); setbits32(&priv->msg_regs->dmr, DOORBELL_DMR_DI);
out_be32((void *)&msg_regs->dmr, dmr | DOORBELL_DMR_DI); out_be32(&priv->msg_regs->dsr, DOORBELL_DSR_DIQI);
out_be32((void *)&msg_regs->dsr, DOORBELL_DSR_DIQI);
} }
out: out:
@ -803,12 +832,13 @@ fsl_rio_dbell_handler(int irq, void *dev_instance)
*/ */
static int fsl_rio_doorbell_init(struct rio_mport *mport) static int fsl_rio_doorbell_init(struct rio_mport *mport)
{ {
struct rio_priv *priv = mport->priv;
int rc = 0; int rc = 0;
/* Map outbound doorbell window immediately after maintenance window */ /* Map outbound doorbell window immediately after maintenance window */
if (!(dbell_win = priv->dbell_win = ioremap(mport->iores.start + RIO_MAINT_WIN_SIZE,
(u32) ioremap(mport->iores.start + RIO_MAINT_WIN_SIZE, RIO_DBELL_WIN_SIZE);
RIO_DBELL_WIN_SIZE))) { if (!priv->dbell_win) {
printk(KERN_ERR printk(KERN_ERR
"RIO: unable to map outbound doorbell window\n"); "RIO: unable to map outbound doorbell window\n");
rc = -ENOMEM; rc = -ENOMEM;
@ -816,37 +846,36 @@ static int fsl_rio_doorbell_init(struct rio_mport *mport)
} }
/* Initialize inbound doorbells */ /* Initialize inbound doorbells */
if (!(dbell_ring.virt = dma_alloc_coherent(NULL, priv->dbell_ring.virt = dma_alloc_coherent(NULL, 512 *
512 * DOORBELL_MESSAGE_SIZE, DOORBELL_MESSAGE_SIZE, &priv->dbell_ring.phys, GFP_KERNEL);
&dbell_ring.phys, if (!priv->dbell_ring.virt) {
GFP_KERNEL))) {
printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n"); printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n");
rc = -ENOMEM; rc = -ENOMEM;
iounmap((void *)dbell_win); iounmap(priv->dbell_win);
goto out; goto out;
} }
/* Point dequeue/enqueue pointers at first entry in ring */ /* Point dequeue/enqueue pointers at first entry in ring */
out_be32((void *)&msg_regs->dqdpar, (u32) dbell_ring.phys); out_be32(&priv->msg_regs->dqdpar, (u32) priv->dbell_ring.phys);
out_be32((void *)&msg_regs->dqepar, (u32) dbell_ring.phys); out_be32(&priv->msg_regs->dqepar, (u32) priv->dbell_ring.phys);
/* Clear interrupt status */ /* Clear interrupt status */
out_be32((void *)&msg_regs->dsr, 0x00000091); out_be32(&priv->msg_regs->dsr, 0x00000091);
/* Hook up doorbell handler */ /* Hook up doorbell handler */
if ((rc = rc = request_irq(IRQ_RIO_BELL(mport), fsl_rio_dbell_handler, 0,
request_irq(MPC85xx_IRQ_RIO_BELL, fsl_rio_dbell_handler, 0, "dbell_rx", (void *)mport);
"dbell_rx", (void *)mport) < 0)) { if (rc < 0) {
iounmap((void *)dbell_win); iounmap(priv->dbell_win);
dma_free_coherent(NULL, 512 * DOORBELL_MESSAGE_SIZE, dma_free_coherent(NULL, 512 * DOORBELL_MESSAGE_SIZE,
dbell_ring.virt, dbell_ring.phys); priv->dbell_ring.virt, priv->dbell_ring.phys);
printk(KERN_ERR printk(KERN_ERR
"MPC85xx RIO: unable to request inbound doorbell irq"); "MPC85xx RIO: unable to request inbound doorbell irq");
goto out; goto out;
} }
/* Configure doorbells for snooping, 512 entries, and enable */ /* Configure doorbells for snooping, 512 entries, and enable */
out_be32((void *)&msg_regs->dmr, 0x00108161); out_be32(&priv->msg_regs->dmr, 0x00108161);
out: out:
return rc; return rc;
@ -887,6 +916,8 @@ void fsl_rio_setup(int law_start, int law_size)
{ {
struct rio_ops *ops; struct rio_ops *ops;
struct rio_mport *port; struct rio_mport *port;
struct rio_priv *priv = NULL;
int rc;
ops = kmalloc(sizeof(struct rio_ops), GFP_KERNEL); ops = kmalloc(sizeof(struct rio_ops), GFP_KERNEL);
ops->lcread = fsl_local_config_read; ops->lcread = fsl_local_config_read;
@ -895,9 +926,17 @@ void fsl_rio_setup(int law_start, int law_size)
ops->cwrite = fsl_rio_config_write; ops->cwrite = fsl_rio_config_write;
ops->dsend = fsl_rio_doorbell_send; ops->dsend = fsl_rio_doorbell_send;
port = kmalloc(sizeof(struct rio_mport), GFP_KERNEL); port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
port->id = 0; port->id = 0;
port->index = 0; port->index = 0;
priv = kzalloc(sizeof(struct rio_priv), GFP_KERNEL);
if (!priv) {
printk(KERN_ERR "Can't alloc memory for 'priv'\n");
rc = -ENOMEM;
goto err;
}
INIT_LIST_HEAD(&port->dbells); INIT_LIST_HEAD(&port->dbells);
port->iores.start = law_start; port->iores.start = law_start;
port->iores.end = law_start + law_size; port->iores.end = law_start + law_size;
@ -911,22 +950,32 @@ void fsl_rio_setup(int law_start, int law_size)
port->ops = ops; port->ops = ops;
port->host_deviceid = fsl_rio_get_hdid(port->id); port->host_deviceid = fsl_rio_get_hdid(port->id);
port->priv = priv;
rio_register_mport(port); rio_register_mport(port);
regs_win = (u32) ioremap(RIO_REGS_BASE, 0x20000); priv->regs_win = ioremap(RIO_REGS_BASE, 0x20000);
atmu_regs = (struct rio_atmu_regs *)(regs_win + RIO_ATMU_REGS_OFFSET); priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win
maint_atmu_regs = atmu_regs + 1; + RIO_ATMU_REGS_OFFSET);
dbell_atmu_regs = atmu_regs + 2; priv->maint_atmu_regs = priv->atmu_regs + 1;
msg_regs = (struct rio_msg_regs *)(regs_win + RIO_MSG_REGS_OFFSET); priv->dbell_atmu_regs = priv->atmu_regs + 2;
priv->msg_regs = (struct rio_msg_regs *)(priv->regs_win
+ RIO_MSG_REGS_OFFSET);
/* Configure maintenance transaction window */ /* Configure maintenance transaction window */
out_be32((void *)&maint_atmu_regs->rowbar, 0x000c0000); out_be32(&priv->maint_atmu_regs->rowbar, 0x000c0000);
out_be32((void *)&maint_atmu_regs->rowar, 0x80077015); out_be32(&priv->maint_atmu_regs->rowar, 0x80077015);
maint_win = (u32) ioremap(law_start, RIO_MAINT_WIN_SIZE); priv->maint_win = ioremap(law_start, RIO_MAINT_WIN_SIZE);
/* Configure outbound doorbell window */ /* Configure outbound doorbell window */
out_be32((void *)&dbell_atmu_regs->rowbar, 0x000c0400); out_be32(&priv->dbell_atmu_regs->rowbar, 0x000c0400);
out_be32((void *)&dbell_atmu_regs->rowar, 0x8004200b); out_be32(&priv->dbell_atmu_regs->rowar, 0x8004200b);
fsl_rio_doorbell_init(port); fsl_rio_doorbell_init(port);
return;
err:
if (priv)
iounmap(priv->regs_win);
kfree(priv);
kfree(port);
} }

10
drivers/rapidio/rio-access.c
View file

@ -48,7 +48,7 @@ int __rio_local_read_config_##size \
u32 data = 0; \ u32 data = 0; \
if (RIO_##size##_BAD) return RIO_BAD_SIZE; \ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
spin_lock_irqsave(&rio_config_lock, flags); \ spin_lock_irqsave(&rio_config_lock, flags); \
res = mport->ops->lcread(mport->id, offset, len, &data); \ res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
*value = (type)data; \ *value = (type)data; \
spin_unlock_irqrestore(&rio_config_lock, flags); \ spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \ return res; \
@ -71,7 +71,7 @@ int __rio_local_write_config_##size \
unsigned long flags; \ unsigned long flags; \
if (RIO_##size##_BAD) return RIO_BAD_SIZE; \ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
spin_lock_irqsave(&rio_config_lock, flags); \ spin_lock_irqsave(&rio_config_lock, flags); \
res = mport->ops->lcwrite(mport->id, offset, len, value); \ res = mport->ops->lcwrite(mport, mport->id, offset, len, value);\
spin_unlock_irqrestore(&rio_config_lock, flags); \ spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \ return res; \
} }
@ -108,7 +108,7 @@ int rio_mport_read_config_##size \
u32 data = 0; \ u32 data = 0; \
if (RIO_##size##_BAD) return RIO_BAD_SIZE; \ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
spin_lock_irqsave(&rio_config_lock, flags); \ spin_lock_irqsave(&rio_config_lock, flags); \
res = mport->ops->cread(mport->id, destid, hopcount, offset, len, &data); \ res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
*value = (type)data; \ *value = (type)data; \
spin_unlock_irqrestore(&rio_config_lock, flags); \ spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \ return res; \
@ -131,7 +131,7 @@ int rio_mport_write_config_##size \
unsigned long flags; \ unsigned long flags; \
if (RIO_##size##_BAD) return RIO_BAD_SIZE; \ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
spin_lock_irqsave(&rio_config_lock, flags); \ spin_lock_irqsave(&rio_config_lock, flags); \
res = mport->ops->cwrite(mport->id, destid, hopcount, offset, len, value); \ res = mport->ops->cwrite(mport, mport->id, destid, hopcount, offset, len, value); \
spin_unlock_irqrestore(&rio_config_lock, flags); \ spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \ return res; \
} }
@ -166,7 +166,7 @@ int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&rio_doorbell_lock, flags); spin_lock_irqsave(&rio_doorbell_lock, flags);
res = mport->ops->dsend(mport->id, destid, data); res = mport->ops->dsend(mport, mport->id, destid, data);
spin_unlock_irqrestore(&rio_doorbell_lock, flags); spin_unlock_irqrestore(&rio_doorbell_lock, flags);
return res; return res;

18
include/linux/rio.h
View file

@ -163,6 +163,7 @@ struct rio_dbell {
* @id: Port ID, unique among all ports * @id: Port ID, unique among all ports
* @index: Port index, unique among all port interfaces of the same type * @index: Port index, unique among all port interfaces of the same type
* @name: Port name string * @name: Port name string
* @priv: Master port private data
*/ */
struct rio_mport { struct rio_mport {
struct list_head dbells; /* list of doorbell events */ struct list_head dbells; /* list of doorbell events */
@ -178,6 +179,7 @@ struct rio_mport {
unsigned char index; /* port index, unique among all port unsigned char index; /* port index, unique among all port
interfaces of the same type */ interfaces of the same type */
unsigned char name[40]; unsigned char name[40];
void *priv; /* Master port private data */
}; };
/** /**
@ -229,13 +231,15 @@ struct rio_switch {
* @dsend: Callback to send a doorbell message. * @dsend: Callback to send a doorbell message.
*/ */
struct rio_ops { struct rio_ops {
int (*lcread) (int index, u32 offset, int len, u32 * data); int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
int (*lcwrite) (int index, u32 offset, int len, u32 data); u32 *data);
int (*cread) (int index, u16 destid, u8 hopcount, u32 offset, int len, int (*lcwrite) (struct rio_mport *mport, int index, u32 offset, int len,
u32 * data); u32 data);
int (*cwrite) (int index, u16 destid, u8 hopcount, u32 offset, int len, int (*cread) (struct rio_mport *mport, int index, u16 destid,
u32 data); u8 hopcount, u32 offset, int len, u32 *data);
int (*dsend) (int index, u16 destid, u16 data); int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
u8 hopcount, u32 offset, int len, u32 data);
int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
}; };
#define RIO_RESOURCE_MEM 0x00000100 #define RIO_RESOURCE_MEM 0x00000100