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char: remove the SGI tiocx/mbcs driver

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The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-3-hch@lst.de
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Christoph Hellwig 2019-08-13 09:24:48 +02:00 committed by Tony Luck
parent c116954b2c
commit 8334d1d415
8 changed files with 0 additions and 1973 deletions
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2
arch/ia64/configs/generic_defconfig
View File

@ -90,8 +90,6 @@ CONFIG_IGB=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_GAMEPORT=m
CONFIG_SERIAL_NONSTANDARD=y
CONFIG_SGI_TIOCX=y
CONFIG_SGI_MBCS=m
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=6

2
arch/ia64/configs/gensparse_defconfig
View File

@ -79,8 +79,6 @@ CONFIG_E1000=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_GAMEPORT=m
CONFIG_SERIAL_NONSTANDARD=y
CONFIG_SGI_TIOCX=y
CONFIG_SGI_MBCS=m
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=6

1
arch/ia64/sn/kernel/Makefile
View File

@ -14,5 +14,4 @@ obj-y += setup.o bte.o bte_error.o irq.o mca.o idle.o \
io_init.o iomv.o klconflib.o pio_phys.o \
sn2/
obj-$(CONFIG_IA64_GENERIC) += machvec.o
obj-$(CONFIG_SGI_TIOCX) += tiocx.o
obj-$(CONFIG_PCI_MSI) += msi_sn.o

569
arch/ia64/sn/kernel/tiocx.c
View File

@ -1,569 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/proc_fs.h>
#include <linux/capability.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/addrs.h>
#include <asm/sn/io.h>
#include <asm/sn/types.h>
#include <asm/sn/shubio.h>
#include <asm/sn/tiocx.h>
#include <asm/sn/l1.h>
#include <asm/sn/module.h>
#include "tio.h"
#include "xtalk/xwidgetdev.h"
#include "xtalk/hubdev.h"
#define CX_DEV_NONE 0
#define DEVICE_NAME "tiocx"
#define WIDGET_ID 0
#define TIOCX_DEBUG 0
#if TIOCX_DEBUG
#define DBG(fmt...) printk(KERN_ALERT fmt)
#else
#define DBG(fmt...)
#endif
struct device_attribute dev_attr_cxdev_control;
/**
* tiocx_match - Try to match driver id list with device.
* @dev: device pointer
* @drv: driver pointer
*
* Returns 1 if match, 0 otherwise.
*/
static int tiocx_match(struct device *dev, struct device_driver *drv)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
struct cx_drv *cx_drv = to_cx_driver(drv);
const struct cx_device_id *ids = cx_drv->id_table;
if (!ids)
return 0;
while (ids->part_num) {
if (ids->part_num == cx_dev->cx_id.part_num)
return 1;
ids++;
}
return 0;
}
static int tiocx_uevent(struct device *dev, struct kobj_uevent_env *env)
{
return -ENODEV;
}
static void tiocx_bus_release(struct device *dev)
{
kfree(to_cx_dev(dev));
}
/**
* cx_device_match - Find cx_device in the id table.
* @ids: id table from driver
* @cx_device: part/mfg id for the device
*
*/
static const struct cx_device_id *cx_device_match(const struct cx_device_id
*ids,
struct cx_dev *cx_device)
{
/*
* NOTES: We may want to check for CX_ANY_ID too.
* Do we want to match against nasid too?
* CX_DEV_NONE == 0, if the driver tries to register for
* part/mfg == 0 we should return no-match (NULL) here.
*/
while (ids->part_num && ids->mfg_num) {
if (ids->part_num == cx_device->cx_id.part_num &&
ids->mfg_num == cx_device->cx_id.mfg_num)
return ids;
ids++;
}
return NULL;
}
/**
* cx_device_probe - Look for matching device.
* Call driver probe routine if found.
* @cx_driver: driver table (cx_drv struct) from driver
* @cx_device: part/mfg id for the device
*/
static int cx_device_probe(struct device *dev)
{
const struct cx_device_id *id;
struct cx_drv *cx_drv = to_cx_driver(dev->driver);
struct cx_dev *cx_dev = to_cx_dev(dev);
int error = 0;
if (!cx_dev->driver && cx_drv->probe) {
id = cx_device_match(cx_drv->id_table, cx_dev);
if (id) {
if ((error = cx_drv->probe(cx_dev, id)) < 0)
return error;
else
cx_dev->driver = cx_drv;
}
}
return error;
}
/**
* cx_driver_remove - Remove driver from device struct.
* @dev: device
*/
static int cx_driver_remove(struct device *dev)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
struct cx_drv *cx_drv = cx_dev->driver;
if (cx_drv->remove)
cx_drv->remove(cx_dev);
cx_dev->driver = NULL;
return 0;
}
struct bus_type tiocx_bus_type = {
.name = "tiocx",
.match = tiocx_match,
.uevent = tiocx_uevent,
.probe = cx_device_probe,
.remove = cx_driver_remove,
};
/**
* cx_driver_register - Register the driver.
* @cx_driver: driver table (cx_drv struct) from driver
*
* Called from the driver init routine to register a driver.
* The cx_drv struct contains the driver name, a pointer to
* a table of part/mfg numbers and a pointer to the driver's
* probe/attach routine.
*/
int cx_driver_register(struct cx_drv *cx_driver)
{
cx_driver->driver.name = cx_driver->name;
cx_driver->driver.bus = &tiocx_bus_type;
return driver_register(&cx_driver->driver);
}
/**
* cx_driver_unregister - Unregister the driver.
* @cx_driver: driver table (cx_drv struct) from driver
*/
int cx_driver_unregister(struct cx_drv *cx_driver)
{
driver_unregister(&cx_driver->driver);
return 0;
}
/**
* cx_device_register - Register a device.
* @nasid: device's nasid
* @part_num: device's part number
* @mfg_num: device's manufacturer number
* @hubdev: hub info associated with this device
* @bt: board type of the device
*
*/
int
cx_device_register(nasid_t nasid, int part_num, int mfg_num,
struct hubdev_info *hubdev, int bt)
{
struct cx_dev *cx_dev;
int r;
cx_dev = kzalloc(sizeof(struct cx_dev), GFP_KERNEL);
DBG("cx_dev= 0x%p\n", cx_dev);
if (cx_dev == NULL)
return -ENOMEM;
cx_dev->cx_id.part_num = part_num;
cx_dev->cx_id.mfg_num = mfg_num;
cx_dev->cx_id.nasid = nasid;
cx_dev->hubdev = hubdev;
cx_dev->bt = bt;
cx_dev->dev.parent = NULL;
cx_dev->dev.bus = &tiocx_bus_type;
cx_dev->dev.release = tiocx_bus_release;
dev_set_name(&cx_dev->dev, "%d", cx_dev->cx_id.nasid);
r = device_register(&cx_dev->dev);
if (r) {
kfree(cx_dev);
return r;
}
get_device(&cx_dev->dev);
device_create_file(&cx_dev->dev, &dev_attr_cxdev_control);
return 0;
}
/**
* cx_device_unregister - Unregister a device.
* @cx_dev: part/mfg id for the device
*/
int cx_device_unregister(struct cx_dev *cx_dev)
{
put_device(&cx_dev->dev);
device_unregister(&cx_dev->dev);
return 0;
}
/**
* cx_device_reload - Reload the device.
* @nasid: device's nasid
* @part_num: device's part number
* @mfg_num: device's manufacturer number
*
* Remove the device associated with 'nasid' from device list and then
* call device-register with the given part/mfg numbers.
*/
static int cx_device_reload(struct cx_dev *cx_dev)
{
cx_device_unregister(cx_dev);
return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num,
cx_dev->cx_id.mfg_num, cx_dev->hubdev,
cx_dev->bt);
}
static inline u64 tiocx_intr_alloc(nasid_t nasid, int widget,
u64 sn_irq_info,
int req_irq, nasid_t req_nasid,
int req_slice)
{
struct ia64_sal_retval rv;
rv.status = 0;
rv.v0 = 0;
ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT,
SAL_INTR_ALLOC, nasid,
widget, sn_irq_info, req_irq,
req_nasid, req_slice);
return rv.status;
}
static inline void tiocx_intr_free(nasid_t nasid, int widget,
struct sn_irq_info *sn_irq_info)
{
struct ia64_sal_retval rv;
rv.status = 0;
rv.v0 = 0;
ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT,
SAL_INTR_FREE, nasid,
widget, sn_irq_info->irq_irq,
sn_irq_info->irq_cookie, 0, 0);
}
struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq,
nasid_t req_nasid, int slice)
{
struct sn_irq_info *sn_irq_info;
int status;
int sn_irq_size = sizeof(struct sn_irq_info);
if ((nasid & 1) == 0)
return NULL;
sn_irq_info = kzalloc(sn_irq_size, GFP_KERNEL);
if (sn_irq_info == NULL)
return NULL;
status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq,
req_nasid, slice);
if (status) {
kfree(sn_irq_info);
return NULL;
} else {
return sn_irq_info;
}
}
void tiocx_irq_free(struct sn_irq_info *sn_irq_info)
{
u64 bridge = (u64) sn_irq_info->irq_bridge;
nasid_t nasid = NASID_GET(bridge);
int widget;
if (nasid & 1) {
widget = TIO_SWIN_WIDGETNUM(bridge);
tiocx_intr_free(nasid, widget, sn_irq_info);
kfree(sn_irq_info);
}
}
u64 tiocx_dma_addr(u64 addr)
{
return PHYS_TO_TIODMA(addr);
}
u64 tiocx_swin_base(int nasid)
{
return TIO_SWIN_BASE(nasid, TIOCX_CORELET);
}
EXPORT_SYMBOL(cx_driver_register);
EXPORT_SYMBOL(cx_driver_unregister);
EXPORT_SYMBOL(cx_device_register);
EXPORT_SYMBOL(cx_device_unregister);
EXPORT_SYMBOL(tiocx_irq_alloc);
EXPORT_SYMBOL(tiocx_irq_free);
EXPORT_SYMBOL(tiocx_bus_type);
EXPORT_SYMBOL(tiocx_dma_addr);
EXPORT_SYMBOL(tiocx_swin_base);
static void tio_conveyor_set(nasid_t nasid, int enable_flag)
{
u64 ice_frz;
u64 disable_cb = (1ull << 61);
if (!(nasid & 1))
return;
ice_frz = REMOTE_HUB_L(nasid, TIO_ICE_FRZ_CFG);
if (enable_flag) {
if (!(ice_frz & disable_cb)) /* already enabled */
return;
ice_frz &= ~disable_cb;
} else {
if (ice_frz & disable_cb) /* already disabled */
return;
ice_frz |= disable_cb;
}
DBG(KERN_ALERT "TIO_ICE_FRZ_CFG= 0x%lx\n", ice_frz);
REMOTE_HUB_S(nasid, TIO_ICE_FRZ_CFG, ice_frz);
}
#define tio_conveyor_enable(nasid) tio_conveyor_set(nasid, 1)
#define tio_conveyor_disable(nasid) tio_conveyor_set(nasid, 0)
static void tio_corelet_reset(nasid_t nasid, int corelet)
{
if (!(nasid & 1))
return;
REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 1 << corelet);
udelay(2000);
REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 0);
udelay(2000);
}
static int is_fpga_tio(int nasid, int *bt)
{
u16 uninitialized_var(ioboard_type); /* GCC be quiet */
long rc;
rc = ia64_sn_sysctl_ioboard_get(nasid, &ioboard_type);
if (rc) {
printk(KERN_WARNING "ia64_sn_sysctl_ioboard_get failed: %ld\n",
rc);
return 0;
}
switch (ioboard_type) {
case L1_BRICKTYPE_SA:
case L1_BRICKTYPE_ATHENA:
case L1_BOARDTYPE_DAYTONA:
*bt = ioboard_type;
return 1;
}
return 0;
}
static int bitstream_loaded(nasid_t nasid)
{
u64 cx_credits;
cx_credits = REMOTE_HUB_L(nasid, TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3);
cx_credits &= TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3_CREDIT_CNT_MASK;
DBG("cx_credits= 0x%lx\n", cx_credits);
return (cx_credits == 0xf) ? 1 : 0;
}
static int tiocx_reload(struct cx_dev *cx_dev)
{
int part_num = CX_DEV_NONE;
int mfg_num = CX_DEV_NONE;
nasid_t nasid = cx_dev->cx_id.nasid;
if (bitstream_loaded(nasid)) {
u64 cx_id;
int rv;
rv = ia64_sn_sysctl_tio_clock_reset(nasid);
if (rv) {
printk(KERN_ALERT "CX port JTAG reset failed.\n");
} else {
cx_id = *(volatile u64 *)
(TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
WIDGET_ID);
part_num = XWIDGET_PART_NUM(cx_id);
mfg_num = XWIDGET_MFG_NUM(cx_id);
DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
/* just ignore it if it's a CE */
if (part_num == TIO_CE_ASIC_PARTNUM)
return 0;
}
}
cx_dev->cx_id.part_num = part_num;
cx_dev->cx_id.mfg_num = mfg_num;
/*
* Delete old device and register the new one. It's ok if
* part_num/mfg_num == CX_DEV_NONE. We want to register
* devices in the table even if a bitstream isn't loaded.
* That allows use to see that a bitstream isn't loaded via
* TIOCX_IOCTL_DEV_LIST.
*/
return cx_device_reload(cx_dev);
}
static ssize_t show_cxdev_control(struct device *dev, struct device_attribute *attr, char *buf)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
return sprintf(buf, "0x%x 0x%x 0x%x 0x%x\n",
cx_dev->cx_id.nasid,
cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num,
cx_dev->bt);
}
static ssize_t store_cxdev_control(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
{
int n;
struct cx_dev *cx_dev = to_cx_dev(dev);
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (count <= 0)
return 0;
n = simple_strtoul(buf, NULL, 0);
switch (n) {
case 1:
tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET);
tiocx_reload(cx_dev);
break;
case 2:
tiocx_reload(cx_dev);
break;
case 3:
tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET);
break;
default:
break;
}
return count;
}
DEVICE_ATTR(cxdev_control, 0644, show_cxdev_control, store_cxdev_control);
static int __init tiocx_init(void)
{
cnodeid_t cnodeid;
int found_tiocx_device = 0;
int err;
if (!ia64_platform_is("sn2"))
return 0;
err = bus_register(&tiocx_bus_type);
if (err)
return err;
for (cnodeid = 0; cnodeid < num_cnodes; cnodeid++) {
nasid_t nasid;
int bt;
nasid = cnodeid_to_nasid(cnodeid);
if ((nasid & 0x1) && is_fpga_tio(nasid, &bt)) {
struct hubdev_info *hubdev;
struct xwidget_info *widgetp;
DBG("Found TIO at nasid 0x%x\n", nasid);
hubdev =
(struct hubdev_info *)(NODEPDA(cnodeid)->pdinfo);
widgetp = &hubdev->hdi_xwidget_info[TIOCX_CORELET];
/* The CE hangs off of the CX port but is not an FPGA */
if (widgetp->xwi_hwid.part_num == TIO_CE_ASIC_PARTNUM)
continue;
tio_corelet_reset(nasid, TIOCX_CORELET);
tio_conveyor_enable(nasid);
if (cx_device_register
(nasid, widgetp->xwi_hwid.part_num,
widgetp->xwi_hwid.mfg_num, hubdev, bt) < 0)
return -ENXIO;
else
found_tiocx_device++;
}
}
/* It's ok if we find zero devices. */
DBG("found_tiocx_device= %d\n", found_tiocx_device);
return 0;
}
static int cx_remove_device(struct device * dev, void * data)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
device_remove_file(dev, &dev_attr_cxdev_control);
cx_device_unregister(cx_dev);
return 0;
}
static void __exit tiocx_exit(void)
{
DBG("tiocx_exit\n");
/*
* Unregister devices.
*/
bus_for_each_dev(&tiocx_bus_type, NULL, NULL, cx_remove_device);
bus_unregister(&tiocx_bus_type);
}
fs_initcall(tiocx_init);
module_exit(tiocx_exit);
/************************************************************************
* Module licensing and description
************************************************************************/
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
MODULE_DESCRIPTION("TIOCX module");
MODULE_SUPPORTED_DEVICE(DEVICE_NAME);

14
drivers/char/Kconfig
View File

@ -26,20 +26,6 @@ config DEVKMEM
kind of kernel debugging operations.
When in doubt, say "N".
config SGI_TIOCX
bool "SGI TIO CX driver support"
depends on (IA64_SGI_SN2 || IA64_GENERIC)
help
If you have an SGI Altix and you have fpga devices attached
to your TIO, say Y here, otherwise say N.
config SGI_MBCS
tristate "SGI FPGA Core Services driver support"
depends on SGI_TIOCX
help
If you have an SGI Altix with an attached SABrick
say Y or M here, otherwise say N.
source "drivers/tty/serial/Kconfig"
source "drivers/tty/serdev/Kconfig"

1
drivers/char/Makefile
View File

@ -12,7 +12,6 @@ obj-$(CONFIG_RAW_DRIVER) += raw.o
obj-$(CONFIG_MSPEC) += mspec.o
obj-$(CONFIG_UV_MMTIMER) += uv_mmtimer.o
obj-$(CONFIG_IBM_BSR) += bsr.o
obj-$(CONFIG_SGI_MBCS) += mbcs.o
obj-$(CONFIG_PRINTER) += lp.o

831
drivers/char/mbcs.c
View File

@ -1,831 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
*/
/*
* MOATB Core Services driver.
*/
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/uio.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <asm/io.h>
#include <linux/uaccess.h>
#include <asm/pgtable.h>
#include <asm/sn/addrs.h>
#include <asm/sn/intr.h>
#include <asm/sn/tiocx.h>
#include "mbcs.h"
#define MBCS_DEBUG 0
#if MBCS_DEBUG
#define DBG(fmt...) printk(KERN_ALERT fmt)
#else
#define DBG(fmt...)
#endif
static DEFINE_MUTEX(mbcs_mutex);
static int mbcs_major;
static LIST_HEAD(soft_list);
/*
* file operations
*/
static const struct file_operations mbcs_ops = {
.owner = THIS_MODULE,
.open = mbcs_open,
.llseek = mbcs_sram_llseek,
.read = mbcs_sram_read,
.write = mbcs_sram_write,
.mmap = mbcs_gscr_mmap,
};
struct mbcs_callback_arg {
int minor;
struct cx_dev *cx_dev;
};
static inline void mbcs_getdma_init(struct getdma *gdma)
{
memset(gdma, 0, sizeof(struct getdma));
gdma->DoneIntEnable = 1;
}
static inline void mbcs_putdma_init(struct putdma *pdma)
{
memset(pdma, 0, sizeof(struct putdma));
pdma->DoneIntEnable = 1;
}
static inline void mbcs_algo_init(struct algoblock *algo_soft)
{
memset(algo_soft, 0, sizeof(struct algoblock));
}
static inline void mbcs_getdma_set(void *mmr,
uint64_t hostAddr,
uint64_t localAddr,
uint64_t localRamSel,
uint64_t numPkts,
uint64_t amoEnable,
uint64_t intrEnable,
uint64_t peerIO,
uint64_t amoHostDest,
uint64_t amoModType, uint64_t intrHostDest,
uint64_t intrVector)
{
union dma_control rdma_control;
union dma_amo_dest amo_dest;
union intr_dest intr_dest;
union dma_localaddr local_addr;
union dma_hostaddr host_addr;
rdma_control.dma_control_reg = 0;
amo_dest.dma_amo_dest_reg = 0;
intr_dest.intr_dest_reg = 0;
local_addr.dma_localaddr_reg = 0;
host_addr.dma_hostaddr_reg = 0;
host_addr.dma_sys_addr = hostAddr;
MBCS_MMR_SET(mmr, MBCS_RD_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
local_addr.dma_ram_addr = localAddr;
local_addr.dma_ram_sel = localRamSel;
MBCS_MMR_SET(mmr, MBCS_RD_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
rdma_control.dma_op_length = numPkts;
rdma_control.done_amo_en = amoEnable;
rdma_control.done_int_en = intrEnable;
rdma_control.pio_mem_n = peerIO;
MBCS_MMR_SET(mmr, MBCS_RD_DMA_CTRL, rdma_control.dma_control_reg);
amo_dest.dma_amo_sys_addr = amoHostDest;
amo_dest.dma_amo_mod_type = amoModType;
MBCS_MMR_SET(mmr, MBCS_RD_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
intr_dest.address = intrHostDest;
intr_dest.int_vector = intrVector;
MBCS_MMR_SET(mmr, MBCS_RD_DMA_INT_DEST, intr_dest.intr_dest_reg);
}
static inline void mbcs_putdma_set(void *mmr,
uint64_t hostAddr,
uint64_t localAddr,
uint64_t localRamSel,
uint64_t numPkts,
uint64_t amoEnable,
uint64_t intrEnable,
uint64_t peerIO,
uint64_t amoHostDest,
uint64_t amoModType,
uint64_t intrHostDest, uint64_t intrVector)
{
union dma_control wdma_control;
union dma_amo_dest amo_dest;
union intr_dest intr_dest;
union dma_localaddr local_addr;
union dma_hostaddr host_addr;
wdma_control.dma_control_reg = 0;
amo_dest.dma_amo_dest_reg = 0;
intr_dest.intr_dest_reg = 0;
local_addr.dma_localaddr_reg = 0;
host_addr.dma_hostaddr_reg = 0;
host_addr.dma_sys_addr = hostAddr;
MBCS_MMR_SET(mmr, MBCS_WR_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
local_addr.dma_ram_addr = localAddr;
local_addr.dma_ram_sel = localRamSel;
MBCS_MMR_SET(mmr, MBCS_WR_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
wdma_control.dma_op_length = numPkts;
wdma_control.done_amo_en = amoEnable;
wdma_control.done_int_en = intrEnable;
wdma_control.pio_mem_n = peerIO;
MBCS_MMR_SET(mmr, MBCS_WR_DMA_CTRL, wdma_control.dma_control_reg);
amo_dest.dma_amo_sys_addr = amoHostDest;
amo_dest.dma_amo_mod_type = amoModType;
MBCS_MMR_SET(mmr, MBCS_WR_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
intr_dest.address = intrHostDest;
intr_dest.int_vector = intrVector;
MBCS_MMR_SET(mmr, MBCS_WR_DMA_INT_DEST, intr_dest.intr_dest_reg);
}
static inline void mbcs_algo_set(void *mmr,
uint64_t amoHostDest,
uint64_t amoModType,
uint64_t intrHostDest,
uint64_t intrVector, uint64_t algoStepCount)
{
union dma_amo_dest amo_dest;
union intr_dest intr_dest;
union algo_step step;
step.algo_step_reg = 0;
intr_dest.intr_dest_reg = 0;
amo_dest.dma_amo_dest_reg = 0;
amo_dest.dma_amo_sys_addr = amoHostDest;
amo_dest.dma_amo_mod_type = amoModType;
MBCS_MMR_SET(mmr, MBCS_ALG_AMO_DEST, amo_dest.dma_amo_dest_reg);
intr_dest.address = intrHostDest;
intr_dest.int_vector = intrVector;
MBCS_MMR_SET(mmr, MBCS_ALG_INT_DEST, intr_dest.intr_dest_reg);
step.alg_step_cnt = algoStepCount;
MBCS_MMR_SET(mmr, MBCS_ALG_STEP, step.algo_step_reg);
}
static inline int mbcs_getdma_start(struct mbcs_soft *soft)
{
void *mmr_base;
struct getdma *gdma;
uint64_t numPkts;
union cm_control cm_control;
mmr_base = soft->mmr_base;
gdma = &soft->getdma;
/* check that host address got setup */
if (!gdma->hostAddr)
return -1;
numPkts =
(gdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
/* program engine */
mbcs_getdma_set(mmr_base, tiocx_dma_addr(gdma->hostAddr),
gdma->localAddr,
(gdma->localAddr < MB2) ? 0 :
(gdma->localAddr < MB4) ? 1 :
(gdma->localAddr < MB6) ? 2 : 3,
numPkts,
gdma->DoneAmoEnable,
gdma->DoneIntEnable,
gdma->peerIO,
gdma->amoHostDest,
gdma->amoModType,
gdma->intrHostDest, gdma->intrVector);
/* start engine */
cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.rd_dma_go = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
return 0;
}
static inline int mbcs_putdma_start(struct mbcs_soft *soft)
{
void *mmr_base;
struct putdma *pdma;
uint64_t numPkts;
union cm_control cm_control;
mmr_base = soft->mmr_base;
pdma = &soft->putdma;
/* check that host address got setup */
if (!pdma->hostAddr)
return -1;
numPkts =
(pdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
/* program engine */
mbcs_putdma_set(mmr_base, tiocx_dma_addr(pdma->hostAddr),
pdma->localAddr,
(pdma->localAddr < MB2) ? 0 :
(pdma->localAddr < MB4) ? 1 :
(pdma->localAddr < MB6) ? 2 : 3,
numPkts,
pdma->DoneAmoEnable,
pdma->DoneIntEnable,
pdma->peerIO,
pdma->amoHostDest,
pdma->amoModType,
pdma->intrHostDest, pdma->intrVector);
/* start engine */
cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.wr_dma_go = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
return 0;
}
static inline int mbcs_algo_start(struct mbcs_soft *soft)
{
struct algoblock *algo_soft = &soft->algo;
void *mmr_base = soft->mmr_base;
union cm_control cm_control;
if (mutex_lock_interruptible(&soft->algolock))
return -ERESTARTSYS;
atomic_set(&soft->algo_done, 0);
mbcs_algo_set(mmr_base,
algo_soft->amoHostDest,
algo_soft->amoModType,
algo_soft->intrHostDest,
algo_soft->intrVector, algo_soft->algoStepCount);
/* start algorithm */
cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.alg_done_int_en = 1;
cm_control.alg_go = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
mutex_unlock(&soft->algolock);
return 0;
}
static inline ssize_t
do_mbcs_sram_dmawrite(struct mbcs_soft *soft, uint64_t hostAddr,
size_t len, loff_t * off)
{
int rv = 0;
if (mutex_lock_interruptible(&soft->dmawritelock))
return -ERESTARTSYS;
atomic_set(&soft->dmawrite_done, 0);
soft->putdma.hostAddr = hostAddr;
soft->putdma.localAddr = *off;
soft->putdma.bytes = len;
if (mbcs_putdma_start(soft) < 0) {
DBG(KERN_ALERT "do_mbcs_sram_dmawrite: "
"mbcs_putdma_start failed\n");
rv = -EAGAIN;
goto dmawrite_exit;
}
if (wait_event_interruptible(soft->dmawrite_queue,
atomic_read(&soft->dmawrite_done))) {
rv = -ERESTARTSYS;
goto dmawrite_exit;
}
rv = len;
*off += len;
dmawrite_exit:
mutex_unlock(&soft->dmawritelock);
return rv;
}
static inline ssize_t
do_mbcs_sram_dmaread(struct mbcs_soft *soft, uint64_t hostAddr,
size_t len, loff_t * off)
{
int rv = 0;
if (mutex_lock_interruptible(&soft->dmareadlock))
return -ERESTARTSYS;
atomic_set(&soft->dmawrite_done, 0);
soft->getdma.hostAddr = hostAddr;
soft->getdma.localAddr = *off;
soft->getdma.bytes = len;
if (mbcs_getdma_start(soft) < 0) {
DBG(KERN_ALERT "mbcs_strategy: mbcs_getdma_start failed\n");
rv = -EAGAIN;
goto dmaread_exit;
}
if (wait_event_interruptible(soft->dmaread_queue,
atomic_read(&soft->dmaread_done))) {
rv = -ERESTARTSYS;
goto dmaread_exit;
}
rv = len;
*off += len;
dmaread_exit:
mutex_unlock(&soft->dmareadlock);
return rv;
}
static int mbcs_open(struct inode *ip, struct file *fp)
{
struct mbcs_soft *soft;
int minor;
mutex_lock(&mbcs_mutex);
minor = iminor(ip);
/* Nothing protects access to this list... */
list_for_each_entry(soft, &soft_list, list) {
if (soft->nasid == minor) {
fp->private_data = soft->cxdev;
mutex_unlock(&mbcs_mutex);
return 0;
}
}
mutex_unlock(&mbcs_mutex);
return -ENODEV;
}
static ssize_t mbcs_sram_read(struct file * fp, char __user *buf, size_t len, loff_t * off)
{
struct cx_dev *cx_dev = fp->private_data;
struct mbcs_soft *soft = cx_dev->soft;
uint64_t hostAddr;
int rv = 0;
hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
if (hostAddr == 0)
return -ENOMEM;
rv = do_mbcs_sram_dmawrite(soft, hostAddr, len, off);
if (rv < 0)
goto exit;
if (copy_to_user(buf, (void *)hostAddr, len))
rv = -EFAULT;
exit:
free_pages(hostAddr, get_order(len));
return rv;
}
static ssize_t
mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * off)
{
struct cx_dev *cx_dev = fp->private_data;
struct mbcs_soft *soft = cx_dev->soft;
uint64_t hostAddr;
int rv = 0;
hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
if (hostAddr == 0)
return -ENOMEM;
if (copy_from_user((void *)hostAddr, buf, len)) {
rv = -EFAULT;
goto exit;
}
rv = do_mbcs_sram_dmaread(soft, hostAddr, len, off);
exit:
free_pages(hostAddr, get_order(len));
return rv;
}
static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
{
return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
MBCS_SRAM_SIZE);
}
static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)
{
uint64_t mmr_base;
mmr_base = (uint64_t) (soft->mmr_base + offset);
return mmr_base;
}
static void mbcs_debug_pioaddr_set(struct mbcs_soft *soft)
{
soft->debug_addr = mbcs_pioaddr(soft, MBCS_DEBUG_START);
}
static void mbcs_gscr_pioaddr_set(struct mbcs_soft *soft)
{
soft->gscr_addr = mbcs_pioaddr(soft, MBCS_GSCR_START);
}
static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma)
{
struct cx_dev *cx_dev = fp->private_data;
struct mbcs_soft *soft = cx_dev->soft;
if (vma->vm_pgoff != 0)
return -EINVAL;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
/* Remap-pfn-range will mark the range VM_IO */
if (remap_pfn_range(vma,
vma->vm_start,
__pa(soft->gscr_addr) >> PAGE_SHIFT,
PAGE_SIZE,
vma->vm_page_prot))
return -EAGAIN;
return 0;
}
/**
* mbcs_completion_intr_handler - Primary completion handler.
* @irq: irq
* @arg: soft struct for device
*
*/
static irqreturn_t
mbcs_completion_intr_handler(int irq, void *arg)
{
struct mbcs_soft *soft = (struct mbcs_soft *)arg;
void *mmr_base;
union cm_status cm_status;
union cm_control cm_control;
mmr_base = soft->mmr_base;
cm_status.cm_status_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_STATUS);
if (cm_status.rd_dma_done) {
/* stop dma-read engine, clear status */
cm_control.cm_control_reg =
MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.rd_dma_clr = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
cm_control.cm_control_reg);
atomic_set(&soft->dmaread_done, 1);
wake_up(&soft->dmaread_queue);
}
if (cm_status.wr_dma_done) {
/* stop dma-write engine, clear status */
cm_control.cm_control_reg =
MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.wr_dma_clr = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
cm_control.cm_control_reg);
atomic_set(&soft->dmawrite_done, 1);
wake_up(&soft->dmawrite_queue);
}
if (cm_status.alg_done) {
/* clear status */
cm_control.cm_control_reg =
MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.alg_done_clr = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
cm_control.cm_control_reg);
atomic_set(&soft->algo_done, 1);
wake_up(&soft->algo_queue);
}
return IRQ_HANDLED;
}
/**
* mbcs_intr_alloc - Allocate interrupts.
* @dev: device pointer
*
*/
static int mbcs_intr_alloc(struct cx_dev *dev)
{
struct sn_irq_info *sn_irq;
struct mbcs_soft *soft;
struct getdma *getdma;
struct putdma *putdma;
struct algoblock *algo;
soft = dev->soft;
getdma = &soft->getdma;
putdma = &soft->putdma;
algo = &soft->algo;
soft->get_sn_irq = NULL;
soft->put_sn_irq = NULL;
soft->algo_sn_irq = NULL;
sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
if (sn_irq == NULL)
return -EAGAIN;
soft->get_sn_irq = sn_irq;
getdma->intrHostDest = sn_irq->irq_xtalkaddr;
getdma->intrVector = sn_irq->irq_irq;
if (request_irq(sn_irq->irq_irq,
(void *)mbcs_completion_intr_handler, IRQF_SHARED,
"MBCS get intr", (void *)soft)) {
tiocx_irq_free(soft->get_sn_irq);
return -EAGAIN;
}
sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
if (sn_irq == NULL) {
free_irq(soft->get_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->get_sn_irq);
return -EAGAIN;
}
soft->put_sn_irq = sn_irq;
putdma->intrHostDest = sn_irq->irq_xtalkaddr;
putdma->intrVector = sn_irq->irq_irq;
if (request_irq(sn_irq->irq_irq,
(void *)mbcs_completion_intr_handler, IRQF_SHARED,
"MBCS put intr", (void *)soft)) {
tiocx_irq_free(soft->put_sn_irq);
free_irq(soft->get_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->get_sn_irq);
return -EAGAIN;
}
sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
if (sn_irq == NULL) {
free_irq(soft->put_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->put_sn_irq);
free_irq(soft->get_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->get_sn_irq);
return -EAGAIN;
}
soft->algo_sn_irq = sn_irq;
algo->intrHostDest = sn_irq->irq_xtalkaddr;
algo->intrVector = sn_irq->irq_irq;
if (request_irq(sn_irq->irq_irq,
(void *)mbcs_completion_intr_handler, IRQF_SHARED,
"MBCS algo intr", (void *)soft)) {
tiocx_irq_free(soft->algo_sn_irq);
free_irq(soft->put_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->put_sn_irq);
free_irq(soft->get_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->get_sn_irq);
return -EAGAIN;
}
return 0;
}
/**
* mbcs_intr_dealloc - Remove interrupts.
* @dev: device pointer
*
*/
static void mbcs_intr_dealloc(struct cx_dev *dev)
{
struct mbcs_soft *soft;
soft = dev->soft;
free_irq(soft->get_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->get_sn_irq);
free_irq(soft->put_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->put_sn_irq);
free_irq(soft->algo_sn_irq->irq_irq, soft);
tiocx_irq_free(soft->algo_sn_irq);
}
static inline int mbcs_hw_init(struct mbcs_soft *soft)
{
void *mmr_base = soft->mmr_base;
union cm_control cm_control;
union cm_req_timeout cm_req_timeout;
uint64_t err_stat;
cm_req_timeout.cm_req_timeout_reg =
MBCS_MMR_GET(mmr_base, MBCS_CM_REQ_TOUT);
cm_req_timeout.time_out = MBCS_CM_CONTROL_REQ_TOUT_MASK;
MBCS_MMR_SET(mmr_base, MBCS_CM_REQ_TOUT,
cm_req_timeout.cm_req_timeout_reg);
mbcs_gscr_pioaddr_set(soft);
mbcs_debug_pioaddr_set(soft);
/* clear errors */
err_stat = MBCS_MMR_GET(mmr_base, MBCS_CM_ERR_STAT);
MBCS_MMR_SET(mmr_base, MBCS_CM_CLR_ERR_STAT, err_stat);
MBCS_MMR_ZERO(mmr_base, MBCS_CM_ERROR_DETAIL1);
/* enable interrupts */
/* turn off 2^23 (INT_EN_PIO_REQ_ADDR_INV) */
MBCS_MMR_SET(mmr_base, MBCS_CM_ERR_INT_EN, 0x3ffffff7e00ffUL);
/* arm status regs and clear engines */
cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
cm_control.rearm_stat_regs = 1;
cm_control.alg_clr = 1;
cm_control.wr_dma_clr = 1;
cm_control.rd_dma_clr = 1;
MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
return 0;
}
static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char *buf)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
struct mbcs_soft *soft = cx_dev->soft;
uint64_t debug0;
/*
* By convention, the first debug register contains the
* algorithm number and revision.
*/
debug0 = *(uint64_t *) soft->debug_addr;
return sprintf(buf, "0x%x 0x%x\n",
upper_32_bits(debug0), lower_32_bits(debug0));
}
static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
int n;
struct cx_dev *cx_dev = to_cx_dev(dev);
struct mbcs_soft *soft = cx_dev->soft;
if (count <= 0)
return 0;
n = simple_strtoul(buf, NULL, 0);
if (n == 1) {
mbcs_algo_start(soft);
if (wait_event_interruptible(soft->algo_queue,
atomic_read(&soft->algo_done)))
return -ERESTARTSYS;
}
return count;
}
DEVICE_ATTR(algo, 0644, show_algo, store_algo);
/**
* mbcs_probe - Initialize for device
* @dev: device pointer
* @device_id: id table pointer
*
*/
static int mbcs_probe(struct cx_dev *dev, const struct cx_device_id *id)
{
struct mbcs_soft *soft;
dev->soft = NULL;
soft = kzalloc(sizeof(struct mbcs_soft), GFP_KERNEL);
if (soft == NULL)
return -ENOMEM;
soft->nasid = dev->cx_id.nasid;
list_add(&soft->list, &soft_list);
soft->mmr_base = (void *)tiocx_swin_base(dev->cx_id.nasid);
dev->soft = soft;
soft->cxdev = dev;
init_waitqueue_head(&soft->dmawrite_queue);
init_waitqueue_head(&soft->dmaread_queue);
init_waitqueue_head(&soft->algo_queue);
mutex_init(&soft->dmawritelock);
mutex_init(&soft->dmareadlock);
mutex_init(&soft->algolock);
mbcs_getdma_init(&soft->getdma);
mbcs_putdma_init(&soft->putdma);
mbcs_algo_init(&soft->algo);
mbcs_hw_init(soft);
/* Allocate interrupts */
mbcs_intr_alloc(dev);
device_create_file(&dev->dev, &dev_attr_algo);
return 0;
}
static int mbcs_remove(struct cx_dev *dev)
{
if (dev->soft) {
mbcs_intr_dealloc(dev);
kfree(dev->soft);
}
device_remove_file(&dev->dev, &dev_attr_algo);
return 0;
}
static const struct cx_device_id mbcs_id_table[] = {
{
.part_num = MBCS_PART_NUM,
.mfg_num = MBCS_MFG_NUM,
},
{
.part_num = MBCS_PART_NUM_ALG0,
.mfg_num = MBCS_MFG_NUM,
},
{0, 0}
};
MODULE_DEVICE_TABLE(cx, mbcs_id_table);
static struct cx_drv mbcs_driver = {
.name = DEVICE_NAME,
.id_table = mbcs_id_table,
.probe = mbcs_probe,
.remove = mbcs_remove,
};
static void __exit mbcs_exit(void)
{
unregister_chrdev(mbcs_major, DEVICE_NAME);
cx_driver_unregister(&mbcs_driver);
}
static int __init mbcs_init(void)
{
int rv;
if (!ia64_platform_is("sn2"))
return -ENODEV;
// Put driver into chrdevs[]. Get major number.
rv = register_chrdev(mbcs_major, DEVICE_NAME, &mbcs_ops);
if (rv < 0) {
DBG(KERN_ALERT "mbcs_init: can't get major number. %d\n", rv);
return rv;
}
mbcs_major = rv;
return cx_driver_register(&mbcs_driver);
}
module_init(mbcs_init);
module_exit(mbcs_exit);
MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
MODULE_DESCRIPTION("Driver for MOATB Core Services");
MODULE_LICENSE("GPL");

553
drivers/char/mbcs.h
View File

@ -1,553 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
*/
#ifndef __MBCS_H__
#define __MBCS_H__
/*
* General macros
*/
#define MB (1024*1024)
#define MB2 (2*MB)
#define MB4 (4*MB)
#define MB6 (6*MB)
/*
* Offsets and masks
*/
#define MBCS_CM_ID 0x0000 /* Identification */
#define MBCS_CM_STATUS 0x0008 /* Status */
#define MBCS_CM_ERROR_DETAIL1 0x0010 /* Error Detail1 */
#define MBCS_CM_ERROR_DETAIL2 0x0018 /* Error Detail2 */
#define MBCS_CM_CONTROL 0x0020 /* Control */
#define MBCS_CM_REQ_TOUT 0x0028 /* Request Time-out */
#define MBCS_CM_ERR_INT_DEST 0x0038 /* Error Interrupt Destination */
#define MBCS_CM_TARG_FL 0x0050 /* Target Flush */
#define MBCS_CM_ERR_STAT 0x0060 /* Error Status */
#define MBCS_CM_CLR_ERR_STAT 0x0068 /* Clear Error Status */
#define MBCS_CM_ERR_INT_EN 0x0070 /* Error Interrupt Enable */
#define MBCS_RD_DMA_SYS_ADDR 0x0100 /* Read DMA System Address */
#define MBCS_RD_DMA_LOC_ADDR 0x0108 /* Read DMA Local Address */
#define MBCS_RD_DMA_CTRL 0x0110 /* Read DMA Control */
#define MBCS_RD_DMA_AMO_DEST 0x0118 /* Read DMA AMO Destination */
#define MBCS_RD_DMA_INT_DEST 0x0120 /* Read DMA Interrupt Destination */
#define MBCS_RD_DMA_AUX_STAT 0x0130 /* Read DMA Auxiliary Status */
#define MBCS_WR_DMA_SYS_ADDR 0x0200 /* Write DMA System Address */
#define MBCS_WR_DMA_LOC_ADDR 0x0208 /* Write DMA Local Address */
#define MBCS_WR_DMA_CTRL 0x0210 /* Write DMA Control */
#define MBCS_WR_DMA_AMO_DEST 0x0218 /* Write DMA AMO Destination */
#define MBCS_WR_DMA_INT_DEST 0x0220 /* Write DMA Interrupt Destination */
#define MBCS_WR_DMA_AUX_STAT 0x0230 /* Write DMA Auxiliary Status */
#define MBCS_ALG_AMO_DEST 0x0300 /* Algorithm AMO Destination */
#define MBCS_ALG_INT_DEST 0x0308 /* Algorithm Interrupt Destination */
#define MBCS_ALG_OFFSETS 0x0310
#define MBCS_ALG_STEP 0x0318 /* Algorithm Step */
#define MBCS_GSCR_START 0x0000000
#define MBCS_DEBUG_START 0x0100000
#define MBCS_RAM0_START 0x0200000
#define MBCS_RAM1_START 0x0400000
#define MBCS_RAM2_START 0x0600000
#define MBCS_CM_CONTROL_REQ_TOUT_MASK 0x0000000000ffffffUL
//#define PIO_BASE_ADDR_BASE_OFFSET_MASK 0x00fffffffff00000UL
#define MBCS_SRAM_SIZE (1024*1024)
#define MBCS_CACHELINE_SIZE 128
/*
* MMR get's and put's
*/
#define MBCS_MMR_ADDR(mmr_base, offset)((uint64_t *)(mmr_base + offset))
#define MBCS_MMR_SET(mmr_base, offset, value) { \
uint64_t *mbcs_mmr_set_u64p, readback; \
mbcs_mmr_set_u64p = (uint64_t *)(mmr_base + offset); \
*mbcs_mmr_set_u64p = value; \
readback = *mbcs_mmr_set_u64p; \
}
#define MBCS_MMR_GET(mmr_base, offset) *(uint64_t *)(mmr_base + offset)
#define MBCS_MMR_ZERO(mmr_base, offset) MBCS_MMR_SET(mmr_base, offset, 0)
/*
* MBCS mmr structures
*/
union cm_id {
uint64_t cm_id_reg;
struct {
uint64_t always_one:1, // 0
mfg_id:11, // 11:1
part_num:16, // 27:12
bitstream_rev:8, // 35:28
:28; // 63:36
};
};
union cm_status {
uint64_t cm_status_reg;
struct {
uint64_t pending_reads:8, // 7:0
pending_writes:8, // 15:8
ice_rsp_credits:8, // 23:16
ice_req_credits:8, // 31:24
cm_req_credits:8, // 39:32
:1, // 40
rd_dma_in_progress:1, // 41
rd_dma_done:1, // 42
:1, // 43
wr_dma_in_progress:1, // 44
wr_dma_done:1, // 45
alg_waiting:1, // 46
alg_pipe_running:1, // 47
alg_done:1, // 48
:3, // 51:49
pending_int_reqs:8, // 59:52
:3, // 62:60
alg_half_speed_sel:1; // 63
};
};
union cm_error_detail1 {
uint64_t cm_error_detail1_reg;
struct {
uint64_t packet_type:4, // 3:0
source_id:2, // 5:4
data_size:2, // 7:6
tnum:8, // 15:8
byte_enable:8, // 23:16
gfx_cred:8, // 31:24
read_type:2, // 33:32
pio_or_memory:1, // 34
head_cw_error:1, // 35
:12, // 47:36
head_error_bit:1, // 48
data_error_bit:1, // 49
:13, // 62:50
valid:1; // 63
};
};
union cm_error_detail2 {
uint64_t cm_error_detail2_reg;
struct {
uint64_t address:56, // 55:0
:8; // 63:56
};
};
union cm_control {
uint64_t cm_control_reg;
struct {
uint64_t cm_id:2, // 1:0
:2, // 3:2
max_trans:5, // 8:4
:3, // 11:9
address_mode:1, // 12
:7, // 19:13
credit_limit:8, // 27:20
:5, // 32:28
rearm_stat_regs:1, // 33
prescalar_byp:1, // 34
force_gap_war:1, // 35
rd_dma_go:1, // 36
wr_dma_go:1, // 37
alg_go:1, // 38
rd_dma_clr:1, // 39
wr_dma_clr:1, // 40
alg_clr:1, // 41
:2, // 43:42
alg_wait_step:1, // 44
alg_done_amo_en:1, // 45
alg_done_int_en:1, // 46
:1, // 47
alg_sram0_locked:1, // 48
alg_sram1_locked:1, // 49
alg_sram2_locked:1, // 50
alg_done_clr:1, // 51
:12; // 63:52
};
};
union cm_req_timeout {
uint64_t cm_req_timeout_reg;
struct {
uint64_t time_out:24, // 23:0
:40; // 63:24
};
};
union intr_dest {
uint64_t intr_dest_reg;
struct {
uint64_t address:56, // 55:0
int_vector:8; // 63:56
};
};
union cm_error_status {
uint64_t cm_error_status_reg;
struct {
uint64_t ecc_sbe:1, // 0
ecc_mbe:1, // 1
unsupported_req:1, // 2
unexpected_rsp:1, // 3
bad_length:1, // 4
bad_datavalid:1, // 5
buffer_overflow:1, // 6
request_timeout:1, // 7
:8, // 15:8
head_inv_data_size:1, // 16
rsp_pactype_inv:1, // 17
head_sb_err:1, // 18
missing_head:1, // 19
head_inv_rd_type:1, // 20
head_cmd_err_bit:1, // 21
req_addr_align_inv:1, // 22
pio_req_addr_inv:1, // 23
req_range_dsize_inv:1, // 24
early_term:1, // 25
early_tail:1, // 26
missing_tail:1, // 27
data_flit_sb_err:1, // 28
cm2hcm_req_cred_of:1, // 29
cm2hcm_rsp_cred_of:1, // 30
rx_bad_didn:1, // 31
rd_dma_err_rsp:1, // 32
rd_dma_tnum_tout:1, // 33
rd_dma_multi_tnum_tou:1, // 34
wr_dma_err_rsp:1, // 35
wr_dma_tnum_tout:1, // 36
wr_dma_multi_tnum_tou:1, // 37
alg_data_overflow:1, // 38
alg_data_underflow:1, // 39
ram0_access_conflict:1, // 40
ram1_access_conflict:1, // 41
ram2_access_conflict:1, // 42
ram0_perr:1, // 43
ram1_perr:1, // 44
ram2_perr:1, // 45
int_gen_rsp_err:1, // 46
int_gen_tnum_tout:1, // 47
rd_dma_prog_err:1, // 48
wr_dma_prog_err:1, // 49
:14; // 63:50
};
};
union cm_clr_error_status {
uint64_t cm_clr_error_status_reg;
struct {
uint64_t clr_ecc_sbe:1, // 0
clr_ecc_mbe:1, // 1
clr_unsupported_req:1, // 2
clr_unexpected_rsp:1, // 3
clr_bad_length:1, // 4
clr_bad_datavalid:1, // 5
clr_buffer_overflow:1, // 6
clr_request_timeout:1, // 7
:8, // 15:8
clr_head_inv_data_siz:1, // 16
clr_rsp_pactype_inv:1, // 17
clr_head_sb_err:1, // 18
clr_missing_head:1, // 19
clr_head_inv_rd_type:1, // 20
clr_head_cmd_err_bit:1, // 21
clr_req_addr_align_in:1, // 22
clr_pio_req_addr_inv:1, // 23
clr_req_range_dsize_i:1, // 24
clr_early_term:1, // 25
clr_early_tail:1, // 26
clr_missing_tail:1, // 27
clr_data_flit_sb_err:1, // 28
clr_cm2hcm_req_cred_o:1, // 29
clr_cm2hcm_rsp_cred_o:1, // 30
clr_rx_bad_didn:1, // 31
clr_rd_dma_err_rsp:1, // 32
clr_rd_dma_tnum_tout:1, // 33
clr_rd_dma_multi_tnum:1, // 34
clr_wr_dma_err_rsp:1, // 35
clr_wr_dma_tnum_tout:1, // 36
clr_wr_dma_multi_tnum:1, // 37
clr_alg_data_overflow:1, // 38
clr_alg_data_underflo:1, // 39
clr_ram0_access_confl:1, // 40
clr_ram1_access_confl:1, // 41
clr_ram2_access_confl:1, // 42
clr_ram0_perr:1, // 43
clr_ram1_perr:1, // 44
clr_ram2_perr:1, // 45
clr_int_gen_rsp_err:1, // 46
clr_int_gen_tnum_tout:1, // 47
clr_rd_dma_prog_err:1, // 48
clr_wr_dma_prog_err:1, // 49
:14; // 63:50
};
};
union cm_error_intr_enable {
uint64_t cm_error_intr_enable_reg;
struct {
uint64_t int_en_ecc_sbe:1, // 0
int_en_ecc_mbe:1, // 1
int_en_unsupported_re:1, // 2
int_en_unexpected_rsp:1, // 3
int_en_bad_length:1, // 4
int_en_bad_datavalid:1, // 5
int_en_buffer_overflo:1, // 6
int_en_request_timeou:1, // 7
:8, // 15:8
int_en_head_inv_data_:1, // 16
int_en_rsp_pactype_in:1, // 17
int_en_head_sb_err:1, // 18
int_en_missing_head:1, // 19
int_en_head_inv_rd_ty:1, // 20
int_en_head_cmd_err_b:1, // 21
int_en_req_addr_align:1, // 22
int_en_pio_req_addr_i:1, // 23
int_en_req_range_dsiz:1, // 24
int_en_early_term:1, // 25
int_en_early_tail:1, // 26
int_en_missing_tail:1, // 27
int_en_data_flit_sb_e:1, // 28
int_en_cm2hcm_req_cre:1, // 29
int_en_cm2hcm_rsp_cre:1, // 30
int_en_rx_bad_didn:1, // 31
int_en_rd_dma_err_rsp:1, // 32
int_en_rd_dma_tnum_to:1, // 33
int_en_rd_dma_multi_t:1, // 34
int_en_wr_dma_err_rsp:1, // 35
int_en_wr_dma_tnum_to:1, // 36
int_en_wr_dma_multi_t:1, // 37
int_en_alg_data_overf:1, // 38
int_en_alg_data_under:1, // 39
int_en_ram0_access_co:1, // 40
int_en_ram1_access_co:1, // 41
int_en_ram2_access_co:1, // 42
int_en_ram0_perr:1, // 43
int_en_ram1_perr:1, // 44
int_en_ram2_perr:1, // 45
int_en_int_gen_rsp_er:1, // 46
int_en_int_gen_tnum_t:1, // 47
int_en_rd_dma_prog_er:1, // 48
int_en_wr_dma_prog_er:1, // 49
:14; // 63:50
};
};
struct cm_mmr {
union cm_id id;
union cm_status status;
union cm_error_detail1 err_detail1;
union cm_error_detail2 err_detail2;
union cm_control control;
union cm_req_timeout req_timeout;
uint64_t reserved1[1];
union intr_dest int_dest;
uint64_t reserved2[2];
uint64_t targ_flush;
uint64_t reserved3[1];
union cm_error_status err_status;
union cm_clr_error_status clr_err_status;
union cm_error_intr_enable int_enable;
};
union dma_hostaddr {
uint64_t dma_hostaddr_reg;
struct {
uint64_t dma_sys_addr:56, // 55:0
:8; // 63:56
};
};
union dma_localaddr {
uint64_t dma_localaddr_reg;
struct {
uint64_t dma_ram_addr:21, // 20:0
dma_ram_sel:2, // 22:21
:41; // 63:23
};
};
union dma_control {
uint64_t dma_control_reg;
struct {
uint64_t dma_op_length:16, // 15:0
:18, // 33:16
done_amo_en:1, // 34
done_int_en:1, // 35
:1, // 36
pio_mem_n:1, // 37
:26; // 63:38
};
};
union dma_amo_dest {
uint64_t dma_amo_dest_reg;
struct {
uint64_t dma_amo_sys_addr:56, // 55:0
dma_amo_mod_type:3, // 58:56
:5; // 63:59
};
};
union rdma_aux_status {
uint64_t rdma_aux_status_reg;
struct {
uint64_t op_num_pacs_left:17, // 16:0
:5, // 21:17
lrsp_buff_empty:1, // 22
:17, // 39:23
pending_reqs_left:6, // 45:40
:18; // 63:46
};
};
struct rdma_mmr {
union dma_hostaddr host_addr;
union dma_localaddr local_addr;
union dma_control control;
union dma_amo_dest amo_dest;
union intr_dest intr_dest;
union rdma_aux_status aux_status;
};
union wdma_aux_status {
uint64_t wdma_aux_status_reg;
struct {
uint64_t op_num_pacs_left:17, // 16:0
:4, // 20:17
lreq_buff_empty:1, // 21
:18, // 39:22
pending_reqs_left:6, // 45:40
:18; // 63:46
};
};
struct wdma_mmr {
union dma_hostaddr host_addr;
union dma_localaddr local_addr;
union dma_control control;
union dma_amo_dest amo_dest;
union intr_dest intr_dest;
union wdma_aux_status aux_status;
};
union algo_step {
uint64_t algo_step_reg;
struct {
uint64_t alg_step_cnt:16, // 15:0
:48; // 63:16
};
};
struct algo_mmr {
union dma_amo_dest amo_dest;
union intr_dest intr_dest;
union {
uint64_t algo_offset_reg;
struct {
uint64_t sram0_offset:7, // 6:0
reserved0:1, // 7
sram1_offset:7, // 14:8
reserved1:1, // 15
sram2_offset:7, // 22:16
reserved2:14; // 63:23
};
} sram_offset;
union algo_step step;
};
struct mbcs_mmr {
struct cm_mmr cm;
uint64_t reserved1[17];
struct rdma_mmr rdDma;
uint64_t reserved2[25];
struct wdma_mmr wrDma;
uint64_t reserved3[25];
struct algo_mmr algo;
uint64_t reserved4[156];
};
/*
* defines
*/
#define DEVICE_NAME "mbcs"
#define MBCS_PART_NUM 0xfff0
#define MBCS_PART_NUM_ALG0 0xf001
#define MBCS_MFG_NUM 0x1
struct algoblock {
uint64_t amoHostDest;
uint64_t amoModType;
uint64_t intrHostDest;
uint64_t intrVector;
uint64_t algoStepCount;
};
struct getdma {
uint64_t hostAddr;
uint64_t localAddr;
uint64_t bytes;
uint64_t DoneAmoEnable;
uint64_t DoneIntEnable;
uint64_t peerIO;
uint64_t amoHostDest;
uint64_t amoModType;
uint64_t intrHostDest;
uint64_t intrVector;
};
struct putdma {
uint64_t hostAddr;
uint64_t localAddr;
uint64_t bytes;
uint64_t DoneAmoEnable;
uint64_t DoneIntEnable;
uint64_t peerIO;
uint64_t amoHostDest;
uint64_t amoModType;
uint64_t intrHostDest;
uint64_t intrVector;
};
struct mbcs_soft {
struct list_head list;
struct cx_dev *cxdev;
int major;
int nasid;
void *mmr_base;
wait_queue_head_t dmawrite_queue;
wait_queue_head_t dmaread_queue;
wait_queue_head_t algo_queue;
struct sn_irq_info *get_sn_irq;
struct sn_irq_info *put_sn_irq;
struct sn_irq_info *algo_sn_irq;
struct getdma getdma;
struct putdma putdma;
struct algoblock algo;
uint64_t gscr_addr; // pio addr
uint64_t ram0_addr; // pio addr
uint64_t ram1_addr; // pio addr
uint64_t ram2_addr; // pio addr
uint64_t debug_addr; // pio addr
atomic_t dmawrite_done;
atomic_t dmaread_done;
atomic_t algo_done;
struct mutex dmawritelock;
struct mutex dmareadlock;
struct mutex algolock;
};
static int mbcs_open(struct inode *ip, struct file *fp);
static ssize_t mbcs_sram_read(struct file *fp, char __user *buf, size_t len,
loff_t * off);
static ssize_t mbcs_sram_write(struct file *fp, const char __user *buf, size_t len,
loff_t * off);
static loff_t mbcs_sram_llseek(struct file *filp, loff_t off, int whence);
static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma);
#endif // __MBCS_H__