Commit 61b26917 authored by Zhang Wei's avatar Zhang Wei Committed by Paul Mackerras

[RAPIDIO] Add serial RapidIO controller support, which includes MPC8548, MPC8641

Signed-off-by: default avatarZhang Wei <wei.zhang@freescale.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 182e143b
......@@ -21,6 +21,7 @@
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
#include <asm/io.h>
......@@ -30,7 +31,12 @@
#define IRQ_RIO_RX(m) (((struct rio_priv *)(m->priv))->rxirq)
#define RIO_ATMU_REGS_OFFSET 0x10c00
#define RIO_MSG_REGS_OFFSET 0x11000
#define RIO_P_MSG_REGS_OFFSET 0x11000
#define RIO_S_MSG_REGS_OFFSET 0x13000
#define RIO_ESCSR 0x158
#define RIO_CCSR 0x15c
#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
......@@ -69,7 +75,7 @@
struct rio_atmu_regs {
u32 rowtar;
u32 pad1;
u32 rowtear;
u32 rowbar;
u32 pad2;
u32 rowar;
......@@ -95,7 +101,15 @@ struct rio_msg_regs {
u32 ifqdpar;
u32 pad6;
u32 ifqepar;
u32 pad7[250];
u32 pad7[226];
u32 odmr;
u32 odsr;
u32 res0[4];
u32 oddpr;
u32 oddatr;
u32 res1[3];
u32 odretcr;
u32 res2[12];
u32 dmr;
u32 dsr;
u32 pad8;
......@@ -175,8 +189,22 @@ static int fsl_rio_doorbell_send(struct rio_mport *mport,
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;
}
......@@ -342,11 +370,22 @@ rio_hw_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
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);
......@@ -920,6 +959,7 @@ int fsl_rio_setup(struct of_device *dev)
const u32 *dt_range, *cell;
struct resource regs;
int rlen;
u32 ccsr;
u64 law_start, law_size;
int paw, aw, sw;
......@@ -1008,6 +1048,14 @@ int fsl_rio_setup(struct of_device *dev)
priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1);
/* Probe the master port phy type */
ccsr = in_be32(priv->regs_win + RIO_CCSR);
port->phy_type = (ccsr & 1) ? RIO_PHY_SERIAL : RIO_PHY_PARALLEL;
dev_info(&dev->dev, "RapidIO PHY type: %s\n",
(port->phy_type == RIO_PHY_PARALLEL) ? "parallel" :
((port->phy_type == RIO_PHY_SERIAL) ? "serial" :
"unknown"));
port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR))
& RIO_PEF_CTLS) >> 4;
dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n",
......@@ -1017,8 +1065,13 @@ int fsl_rio_setup(struct of_device *dev)
+ 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
+ RIO_MSG_REGS_OFFSET);
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)
out_be32((priv->regs_win + RIO_ISR_AACR), RIO_ISR_AACR_AA);
/* Configure maintenance transaction window */
out_be32(&priv->maint_atmu_regs->rowbar, 0x000c0000);
......
......@@ -145,6 +145,11 @@ struct rio_dbell {
void *dev_id;
};
enum rio_phy_type {
RIO_PHY_PARALLEL,
RIO_PHY_SERIAL,
};
/**
* struct rio_mport - RIO master port info
* @dbells: List of doorbell events
......@@ -178,6 +183,7 @@ struct rio_mport {
* 0 - Small size. 256 devices.
* 1 - Large size, 65536 devices.
*/
enum rio_phy_type phy_type; /* RapidIO phy type */
unsigned char name[40];
void *priv; /* Master port private data */
};
......
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