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Date: Fri, 20 Dec 2013 18:57:29 -0800
From: Ravi Patel <rapatel@....com>
To: arnd@...db.de, gregkh@...uxfoundation.org, davem@...emloft.net
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
jcm@...hat.com, patches@....com, Ravi Patel <rapatel@....com>,
Keyur Chudgar <kchudgar@....com>
Subject: [PATCH V2 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager
This patch adds APM X-Gene SoC Queue Manager/Traffic Manager base driver.
QMTM is requried by Ethernet, PktDMA (XOR Engine) and Security Engine
subsystems.
Signed-off-by: Ravi Patel <rapatel@....com>
Signed-off-by: Keyur Chudgar <kchudgar@....com>
---
MAINTAINERS | 7 +
drivers/misc/Kconfig | 1 +
drivers/misc/Makefile | 1 +
drivers/misc/xgene/Kconfig | 1 +
drivers/misc/xgene/Makefile | 5 +
drivers/misc/xgene/qmtm/Kconfig | 9 +
drivers/misc/xgene/qmtm/Makefile | 7 +
drivers/misc/xgene/qmtm/xgene_qmtm_main.c | 761 ++++++++++++++++++++++++++++
drivers/misc/xgene/qmtm/xgene_qmtm_main.h | 134 +++++
drivers/misc/xgene/qmtm/xgene_qmtm_storm.c | 370 ++++++++++++++
drivers/misc/xgene/qmtm/xgene_qmtm_storm.h | 139 +++++
include/misc/xgene/xgene_qmtm.h | 277 ++++++++++
12 files changed, 1712 insertions(+)
create mode 100644 drivers/misc/xgene/Kconfig
create mode 100644 drivers/misc/xgene/Makefile
create mode 100644 drivers/misc/xgene/qmtm/Kconfig
create mode 100644 drivers/misc/xgene/qmtm/Makefile
create mode 100644 drivers/misc/xgene/qmtm/xgene_qmtm_main.c
create mode 100644 drivers/misc/xgene/qmtm/xgene_qmtm_main.h
create mode 100644 drivers/misc/xgene/qmtm/xgene_qmtm_storm.c
create mode 100644 drivers/misc/xgene/qmtm/xgene_qmtm_storm.h
create mode 100644 include/misc/xgene/xgene_qmtm.h
diff --git a/MAINTAINERS b/MAINTAINERS
index f216db8..920cae8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -665,6 +665,13 @@ S: Maintained
F: drivers/net/appletalk/
F: net/appletalk/
+APPLIEDMICRO (APM) X-GENE SOC QUEUE MANAGER/TRAFFIC MANAGER (QMTM) DRIVER
+M: Ravi Patel <rapatel@....com>
+M: Keyur Chudgar <kchudgar@....com>
+S: Maintained
+F: drivers/misc/xgene/
+F: include/misc/xgene/xgene_qmtm.h
+
APTINA CAMERA SENSOR PLL
M: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
L: linux-media@...r.kernel.org
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index a3e291d..b309553 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -525,4 +525,5 @@ source "drivers/misc/altera-stapl/Kconfig"
source "drivers/misc/mei/Kconfig"
source "drivers/misc/vmw_vmci/Kconfig"
source "drivers/misc/mic/Kconfig"
+source "drivers/misc/xgene/Kconfig"
endmenu
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index f45473e..0fd3b1b 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -53,3 +53,4 @@ obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/
obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
obj-$(CONFIG_SRAM) += sram.o
obj-y += mic/
+obj-$(CONFIG_ARCH_XGENE) += xgene/
diff --git a/drivers/misc/xgene/Kconfig b/drivers/misc/xgene/Kconfig
new file mode 100644
index 0000000..8f38568
--- /dev/null
+++ b/drivers/misc/xgene/Kconfig
@@ -0,0 +1 @@
+source "drivers/misc/xgene/qmtm/Kconfig"
diff --git a/drivers/misc/xgene/Makefile b/drivers/misc/xgene/Makefile
new file mode 100644
index 0000000..198c2e6
--- /dev/null
+++ b/drivers/misc/xgene/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for APM X-GENE misc drivers.
+#
+
+obj-$(CONFIG_XGENE_QMTM) += qmtm/
diff --git a/drivers/misc/xgene/qmtm/Kconfig b/drivers/misc/xgene/qmtm/Kconfig
new file mode 100644
index 0000000..8efda4d
--- /dev/null
+++ b/drivers/misc/xgene/qmtm/Kconfig
@@ -0,0 +1,9 @@
+config XGENE_QMTM
+ tristate "APM X-Gene Queue Manager/Traffic Manager driver"
+ depends on ARM64 || COMPILE_TEST
+ default y
+ help
+ This option enables APM X-Gene Queue Manager Traffic Manager (QMTM)
+ driver support.
+ QMTM is required for Ethernet, PktDMA (XOR Engine) and Security
+ Engine.
diff --git a/drivers/misc/xgene/qmtm/Makefile b/drivers/misc/xgene/qmtm/Makefile
new file mode 100644
index 0000000..68c2a86
--- /dev/null
+++ b/drivers/misc/xgene/qmtm/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for APM X-GENE Queue Manager Traffic Manager driver.
+#
+
+obj-$(CONFIG_XGENE_QMTM) += xgene-qmtm.o
+
+xgene-qmtm-objs := xgene_qmtm_main.o xgene_qmtm_storm.o
diff --git a/drivers/misc/xgene/qmtm/xgene_qmtm_main.c b/drivers/misc/xgene/qmtm/xgene_qmtm_main.c
new file mode 100644
index 0000000..cda63e0
--- /dev/null
+++ b/drivers/misc/xgene/qmtm/xgene_qmtm_main.c
@@ -0,0 +1,761 @@
+/*
+ * AppliedMicro X-Gene SOC Queue Manager/Traffic Manager driver
+ *
+ * Copyright (c) 2013 Applied Micro Circuits Corporation.
+ * Author: Ravi Patel <rapatel@....com>
+ * Keyur Chudgar <kchudgar@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include "xgene_qmtm_main.h"
+
+#define XGENE_QMTM_DRIVER_VER "1.0"
+#define XGENE_QMTM_DRIVER_NAME "xgene-qmtm"
+#define XGENE_QMTM_DRIVER_DESC "APM X-Gene QMTM driver"
+
+/* CSR Address Macros */
+#define CSR_QM_CONFIG_ADDR 0x00000004
+#define QM_ENABLE_WR(src) (((u32)(src)<<31) & 0x80000000)
+
+#define CSR_PBM_ADDR 0x00000008
+#define OVERWRITE_WR(src) (((u32)(src)<<31) & 0x80000000)
+#define SLVID_PBN_WR(src) (((u32)(src)) & 0x000003ff)
+#define SLAVE_ID_SHIFT 6
+
+#define CSR_PBM_BUF_WR_ADDR 0x0000000c
+#define CSR_PBM_BUF_RD_ADDR 0x00000010
+#define PB_SIZE_WR(src) (((u32)(src)<<31) & 0x80000000)
+#define PREFETCH_BUF_EN_SET(dst, src) \
+ (((dst) & ~0x00200000) | (((u32)(src)<<21) & 0x00200000))
+#define IS_FREE_POOL_SET(dst, src) \
+ (((dst) & ~0x00100000) | (((u32)(src)<<20) & 0x00100000))
+#define TLVQ_SET(dst, src) \
+ (((dst) & ~0x00080000) | (((u32)(src)<<19) & 0x00080000))
+#define CORRESPONDING_QNUM_SET(dst, src) \
+ (((dst) & ~0x0007fe00) | (((u32)(src)<<9) & 0x0007fe00))
+
+#define CSR_PBM_CTICK0_ADDR 0x00000018
+#define MIN_COAL_TAP 0x0
+#define MAX_COAL_TAP 0x7
+
+#define CSR_THRESHOLD0_SET1_ADDR 0x00000030
+#define CSR_THRESHOLD1_SET1_ADDR 0x00000034
+#define CSR_HYSTERESIS_ADDR 0x00000068
+#define CSR_QM_MBOX_NE_INT_MODE_ADDR 0x0000017c
+#define CSR_QMLITE_PBN_MAP_0_ADDR 0x00000228
+
+#define CSR_RECOMB_CTRL_0_ADDR 0x00000230
+#define RECOMB_EN0_SET(dst, src) \
+ (((dst) & ~0x00000001) | (((u32)(src)) & 0x00000001))
+
+/* QMTM Diag CSR */
+#define QM_GLBL_DIAG_CSR_BASE_ADDR_OFFSET 0xd000
+#define QM_CFG_MEM_RAM_SHUTDOWN_ADDR 0x00000070
+#define QM_CFG_MEM_RAM_SHUTDOWN_DEFAULT 0xffffffff
+
+/* PBN macros */
+#define QMTM_MIN_PBN_ID 0
+#define QMTM_MAX_PBN_ID 31
+
+/* Common for Queue ID and PBN */
+#define RES_MASK(nr) (1UL << ((nr) % 32))
+#define RES_WORD(nr) ((nr) / 32)
+
+void xgene_qmtm_wr32(struct xgene_qmtm *qmtm, u32 offset, u32 data)
+{
+ void *addr = (u8 *)qmtm->csr_vaddr + offset;
+ writel(data, addr);
+}
+
+void xgene_qmtm_rd32(struct xgene_qmtm *qmtm, u32 offset, u32 *data)
+{
+ void *addr = (u8 *)qmtm->csr_vaddr + offset;
+ *data = readl(addr);
+}
+
+/* Get available PBN or Queue Id */
+static int xgene_qmtm_get_resource_id(u32 *resource, u32 start, u32 end)
+{
+ u32 index;
+
+ for (index = start; index < end; index++) {
+ if ((resource[RES_WORD(index)] & RES_MASK(index)) == 0) {
+ resource[RES_WORD(index)] |= RES_MASK(index);
+ return index;
+ }
+ }
+
+ return -ENODEV;
+}
+
+/* Put used PBN or Queue Id */
+static inline void xgene_qmtm_put_resource_id(u32 *resource, u32 index)
+{
+ resource[RES_WORD(index)] &= ~(u32) RES_MASK(index);
+}
+
+static void xgene_qmtm_write_pbm(struct xgene_qmtm_qinfo *qinfo, u32 val)
+{
+ u32 pbm = SLVID_PBN_WR((qinfo->slave_id << SLAVE_ID_SHIFT) |
+ qinfo->pbn) | OVERWRITE_WR(1);
+
+ xgene_qmtm_wr32(qinfo->qmtm, CSR_PBM_ADDR, pbm);
+
+ if (qinfo->qmtm_ip == QMTM0 || qinfo->qmtm_ip == QMTM2)
+ val |= PB_SIZE_WR(1);
+
+ xgene_qmtm_wr32(qinfo->qmtm, CSR_PBM_BUF_WR_ADDR, val);
+}
+
+static u32 xgene_qmtm_read_pbm(struct xgene_qmtm_qinfo *qinfo)
+{
+ u32 pbm = SLVID_PBN_WR((qinfo->slave_id << SLAVE_ID_SHIFT) |
+ qinfo->pbn);
+
+ xgene_qmtm_wr32(qinfo->qmtm, CSR_PBM_ADDR, pbm);
+ xgene_qmtm_rd32(qinfo->qmtm, CSR_PBM_BUF_RD_ADDR, &pbm);
+
+ return pbm;
+}
+
+static void xgene_qmtm_set_pbm(struct xgene_qmtm_qinfo *qinfo)
+{
+ u16 is_fp = qinfo->qtype == QTYPE_FP ? 1 : 0;
+ u16 is_vq = qinfo->qtype == QTYPE_VQ ? 1 : 0;
+ u32 val = 0;
+
+ val = CORRESPONDING_QNUM_SET(val, qinfo->queue_id);
+ val = IS_FREE_POOL_SET(val, is_fp);
+ val = TLVQ_SET(val, is_vq);
+ val = PREFETCH_BUF_EN_SET(val, 1);
+ xgene_qmtm_write_pbm(qinfo, val);
+}
+
+static void xgene_qmtm_clr_pbm(struct xgene_qmtm_qinfo *qinfo)
+{
+ xgene_qmtm_write_pbm(qinfo, 0);
+}
+
+/**
+ * xgene_qmtm_set_qinfo - Create and configure a queue
+ * @sdev: Slave context
+ * @qtype: Queue type (P_QUEUE or FP_QUEUE)
+ * @qsize: Queue size see xgene_qmtm_qsize
+ * @qaccess: Queue access method see xgene_qmtm_qaccess
+ * @flags: Queue Information flags
+ * @qpaddr: If Desire Queue Physical Address to use
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to create and configure a queue.
+ *
+ * Return: 0 on Success or -1 on Failure
+ * On Success, updates following in qinfo,
+ * qmtm_ip - QMTM0, QMTM1, QMTM2 or QMTM3
+ * qmtm - QMTM instance context
+ * slave - Slave see xgene_slave
+ * slave_id - Slave ID see xgene_qmtm_slave_id
+ * pbn - Slave ID's prefetch buffer number
+ * queue_id - Queue ID
+ * qdesc - Queue descriptor
+ */
+int xgene_qmtm_set_qinfo(struct xgene_qmtm_qinfo *set)
+{
+ struct xgene_qmtm_sdev *sdev = set->sdev;
+ struct device *dev;
+ struct xgene_qmtm *qmtm;
+ struct xgene_qmtm_qinfo *qinfo;
+ u32 *queue_resource = NULL, *pbn_resource = NULL;
+ int rc;
+ u8 pbn = 0;
+ u16 queue_id = 0;
+
+ qmtm = sdev->qmtm;
+ dev = &qmtm->pdev->dev;
+
+ if (set->flags & XGENE_SLAVE_PB_CONFIGURE) {
+ u8 pbn_start, pbn_count;
+
+ if (set->qtype == QTYPE_FP) {
+ pbn_resource = &sdev->fq_pbn_pool;
+ pbn_start = sdev->fq_pbn_start & ~(u8) 0x20;
+ pbn_count = sdev->fq_pbn_count;
+ } else {
+ pbn_resource = &sdev->wq_pbn_pool;
+ pbn_start = sdev->wq_pbn_start;
+ pbn_count = sdev->wq_pbn_count;
+ }
+
+ rc = xgene_qmtm_get_resource_id(pbn_resource, pbn_start,
+ pbn_start + pbn_count);
+ if (rc < 0) {
+ dev_err(dev, "SETQ: slave %d out of PBN\n",
+ sdev->slave);
+ goto _ret_set_qinfo;
+ }
+
+ pbn = rc;
+ }
+
+ queue_resource = qmtm->queue_pool;
+ rc = xgene_qmtm_get_resource_id(queue_resource, 0, qmtm->max_queues);
+ if (rc < 0) {
+ dev_err(dev, "SETQ: QMTM %d out of Queue ID\n", sdev->qmtm_ip);
+ goto _put_pbn_resource;
+ }
+
+ queue_id = rc;
+ qinfo = kzalloc(sizeof(struct xgene_qmtm_qinfo), GFP_KERNEL);
+ if (qinfo == NULL) {
+ dev_err(dev, "SETQ: Unable to allocate qinfo\n");
+ rc = -ENOMEM;
+ goto _put_queue_resource;
+ }
+
+ qinfo->slave = sdev->slave;
+ qinfo->slave_id = sdev->slave_id;
+ qinfo->qmtm_ip = sdev->qmtm_ip;
+ qinfo->qtype = set->qtype;
+ qinfo->qsize = set->qsize;
+ qinfo->qaccess = set->qaccess;
+ qinfo->flags = set->flags;
+ qinfo->pbn = set->qtype == QTYPE_FP ? (pbn | 0x20) : pbn;
+ qinfo->queue_id = queue_id;
+ qinfo->qpaddr = set->qpaddr;
+ qinfo->qfabric = qmtm->fabric_vaddr + (queue_id << 6);
+ qinfo->sdev = sdev;
+ qinfo->qmtm = qmtm;
+ rc = qmtm->set_qstate(qinfo);
+ if (rc < 0) {
+ dev_err(dev, "SETQ: set_qstate error for %s Queue ID %d\n",
+ sdev->name, queue_id);
+ goto _del_qstate;
+ }
+
+ if (qinfo->qaccess == QACCESS_ALT)
+ qinfo->qdesc->command = qinfo->qfabric + 0x2C;
+
+ if (set->flags & XGENE_SLAVE_PB_CONFIGURE) {
+ xgene_qmtm_set_pbm(qinfo);
+
+ if (set->qaccess == QACCESS_ALT &&
+ sdev->slave_id == QMTM_SLAVE_ID_CPU &&
+ set->qtype == QTYPE_PQ) {
+ u32 data;
+
+ xgene_qmtm_rd32(qmtm, CSR_QM_MBOX_NE_INT_MODE_ADDR,
+ &data);
+ data |= (u32) (1 << (31 - pbn));
+ xgene_qmtm_wr32(qmtm, CSR_QM_MBOX_NE_INT_MODE_ADDR,
+ data);
+ }
+
+ if (set->qtype == QTYPE_PQ &&
+ (sdev->slave_id == QMTM_SLAVE_ID_CPU ||
+ sdev->slave_id == QMTM_SLAVE_ID_MSLIM))
+ qinfo->qdesc->irq = qmtm->dequeue_irq[pbn];
+ }
+
+ qmtm->qinfo[queue_id] = qinfo;
+ memcpy(set, qinfo, sizeof(struct xgene_qmtm_qinfo));
+ return rc;
+
+_del_qstate:
+ qmtm->clr_qstate(qinfo);
+ kfree(qinfo);
+
+_put_queue_resource:
+ xgene_qmtm_put_resource_id(queue_resource, queue_id);
+
+_put_pbn_resource:
+ if (set->flags & XGENE_SLAVE_PB_CONFIGURE)
+ xgene_qmtm_put_resource_id(pbn_resource, pbn);
+
+_ret_set_qinfo:
+ return rc;
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_set_qinfo);
+
+/**
+ * xgene_qmtm_clr_qinfo - Unconfigure and delete a queue
+ * @sdev: Slave context
+ * @queue_id: Queue ID
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to unconfigure and delete a queue.
+ */
+void xgene_qmtm_clr_qinfo(struct xgene_qmtm_qinfo *clr)
+{
+ struct xgene_qmtm_sdev *sdev = clr->sdev;
+ struct xgene_qmtm *qmtm;
+ struct xgene_qmtm_qinfo *qinfo;
+ u8 queue_id = clr->queue_id;
+
+ qmtm = sdev->qmtm;
+ qinfo = qmtm->qinfo[queue_id];
+
+ if (qinfo->flags & XGENE_SLAVE_PB_CONFIGURE) {
+ u32 *pbn_resource;
+ u8 qtype = qinfo->qtype;
+ u8 pbn = (qtype == QTYPE_FP) ?
+ (qinfo->pbn & ~(u8) 0x20) : qinfo->pbn;
+
+ if (qinfo->qaccess == QACCESS_ALT &&
+ qinfo->slave_id == QMTM_SLAVE_ID_CPU && qtype == QTYPE_PQ) {
+ u32 data;
+
+ xgene_qmtm_rd32(qmtm, CSR_QM_MBOX_NE_INT_MODE_ADDR,
+ &data);
+ data &= ~(u32) (1 << (31 - pbn));
+ xgene_qmtm_wr32(qmtm, CSR_QM_MBOX_NE_INT_MODE_ADDR,
+ data);
+ }
+
+ if (qinfo->qtype == QTYPE_FP)
+ pbn_resource = &sdev->fq_pbn_pool;
+ else
+ pbn_resource = &sdev->wq_pbn_pool;
+
+ xgene_qmtm_clr_pbm(qinfo);
+ xgene_qmtm_put_resource_id(pbn_resource, pbn);
+ }
+
+ qmtm->clr_qstate(qinfo);
+ kfree(qinfo);
+ xgene_qmtm_put_resource_id(qmtm->queue_pool, queue_id);
+ qmtm->qinfo[queue_id] = NULL;
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_clr_qinfo);
+
+/**
+ * xgene_qmtm_read_qstate - Get Queue State information for a queue
+ * @qmtm: QMTM instance context
+ * @queue_id: Queue ID
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to read queue state of a queue.
+ *
+ * Return: Updates following in qinfo,
+ * qstate - Current Queue State in QMTM
+ * nummsgs - Number os messages in the Queue
+ * pbm_state - Current prefetch buffer manager state
+ */
+void xgene_qmtm_read_qstate(struct xgene_qmtm_qinfo *qinfo)
+{
+ struct xgene_qmtm *qmtm = qinfo->qmtm;
+ u8 queue_id = qinfo->queue_id;
+
+ memcpy(qinfo, qmtm->qinfo[queue_id], sizeof(struct xgene_qmtm_qinfo));
+ qmtm->read_qstate(qinfo);
+
+ if (qinfo->flags & XGENE_SLAVE_PB_CONFIGURE)
+ qinfo->pbm_state = xgene_qmtm_read_pbm(qinfo);
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_read_qstate);
+
+/**
+ * xgene_qmtm_intr_coalesce - Set interrupt coalescing for ingrgess queue
+ * @qmtm: QMTM instance context
+ * @pbn: CPU's prefetch buffer number corresponding to the interrupt
+ * @tap: Tap value to set
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to set interrupt for its ingress queue.
+ *
+ * Return: 0 on Success or -1 on Failure
+ */
+int xgene_qmtm_intr_coalesce(struct xgene_qmtm_qinfo *qinfo, u8 tap)
+{
+ u32 val, offset, mask, shift;
+ u8 pbn = qinfo->pbn;
+
+ if (tap < MIN_COAL_TAP || tap > MAX_COAL_TAP)
+ return -EINVAL;
+
+ if (pbn < QMTM_MIN_PBN_ID || pbn > QMTM_MAX_PBN_ID)
+ return -EINVAL;
+
+ offset = 4 * (pbn / 8);
+ shift = 4 * (7 - (pbn % 8));
+ mask = 7 << shift;
+
+ xgene_qmtm_rd32(qinfo->qmtm, CSR_PBM_CTICK0_ADDR + offset, &val);
+ val = (val & ~(u32) mask) | (((u32) tap << shift) & mask);
+ xgene_qmtm_wr32(qinfo->qmtm, CSR_PBM_CTICK0_ADDR + offset, val);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_intr_coalesce);
+
+/**
+ * xgene_qmtm_fp_dealloc_msg - Fill a buffer in a free pool queue
+ * @qdesc: Queue descriptor
+ * @msg: QMTM free pool buffer message to fill in to queue
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to fill a buffer in its free pool queue.
+ */
+void xgene_qmtm_fp_dealloc_msg(struct xgene_qmtm_qdesc *qdesc,
+ struct xgene_qmtm_msg16 *msg)
+{
+ u32 qtail = qdesc->qtail;
+ u32 count = qdesc->count;
+ u8 *tailptr = (u8 *)&qdesc->msg16[qtail];
+
+ memcpy(tailptr, msg, 16);
+
+ if (++qtail == count)
+ qtail = 0;
+
+ writel(1, qdesc->command);
+ qdesc->qtail = qtail;
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_fp_dealloc_msg);
+
+/**
+ * xgene_qmtm_enqueue_msg - Enqueue a work message in subsystem's work queue
+ * @qdesc: Queue descriptor
+ * @msg: X-Gene SOC subsystem's work message to enqueue in to queue
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to enqueue work message in its work queue.
+ */
+void xgene_qmtm_enqueue_msg(struct xgene_qmtm_qdesc *qdesc,
+ struct xgene_qmtm_msg64 *msg)
+{
+ u32 qtail = qdesc->qtail;
+ u32 count = qdesc->count;
+ u8 *tailptr = (u8 *)&qdesc->msg32[qtail];
+
+ memcpy(tailptr, msg, 32);
+
+ if (++qtail == count)
+ qtail = 0;
+
+ if (!msg->msg32_1.msg16.NV) {
+ writel(1, qdesc->command);
+ } else {
+ memcpy(tailptr + 32, (u8 *) msg + 32, 32);
+
+ if (++qtail == count)
+ qtail = 0;
+
+ writel(2, qdesc->command);
+ }
+
+ qdesc->qtail = qtail;
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_enqueue_msg);
+
+/**
+ * xgene_qmtm_dequeue_msg - Dequeue a work message from QMTM instance
+ * @qdesc: Queue descriptor
+ * @msg: Dequeued work message from X-Gene SOC subsystem to CPU
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to dequeue work message from its ingress
+ * queue.
+ *
+ * Return: 0 on Success or -1 on Failure
+ */
+int xgene_qmtm_dequeue_msg(struct xgene_qmtm_qdesc *qdesc,
+ struct xgene_qmtm_msg64 *msg)
+{
+ u32 qhead = qdesc->qhead;
+ u32 count = qdesc->count;
+ u32 *headptr = (u32 *)&qdesc->msg32[qhead];
+
+ if (headptr[EMPTY_SLOT_INDEX] == EMPTY_SLOT)
+ return -EAGAIN;
+
+ memcpy(msg, headptr, 32);
+ headptr[EMPTY_SLOT_INDEX] = EMPTY_SLOT;
+
+ if (++qhead == count)
+ qhead = 0;
+
+ if (!msg->msg32_1.msg16.NV) {
+ writel(0xFFFFFFFF, qdesc->command);
+ } else {
+ headptr += 8;
+
+ if (headptr[EMPTY_SLOT_INDEX] == EMPTY_SLOT)
+ return -EAGAIN;
+
+ memcpy((u8 *) msg + 32, headptr, 32);
+ headptr[EMPTY_SLOT_INDEX] = EMPTY_SLOT;
+
+ if (++qhead == count)
+ qhead = 0;
+
+ writel(0xFFFFFFFE, qdesc->command);
+ }
+
+ qdesc->qhead = qhead;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_dequeue_msg);
+
+/**
+ * xgene_qmtm_get_sdev - Get slave context from slave name
+ * @name: Slave name
+ *
+ * This API will be called by APM X-Gene SOC Ethernet, PktDMA (XOR Engine),
+ * and Security Engine subsystems to get its slave context from its name.
+ *
+ * Return: Slave context on Success or NULL on Failure
+ */
+struct xgene_qmtm_sdev *xgene_qmtm_get_sdev(char *name)
+{
+ return storm_qmtm_get_sdev(name);
+}
+EXPORT_SYMBOL_GPL(xgene_qmtm_get_sdev);
+
+static int xgene_qmtm_enable(struct xgene_qmtm *qmtm)
+{
+ struct xgene_qmtm_qinfo qinfo;
+ struct device *dev = &qmtm->pdev->dev;
+ int rc, mwait = 0;
+ u32 val;
+ u32 queue_id;
+
+ qmtm->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(qmtm->clk)) {
+ dev_err(dev, "can't get clock\n");
+ return PTR_ERR(qmtm->clk);
+ }
+
+ rc = clk_prepare_enable(qmtm->clk);
+ if (rc < 0) {
+ dev_err(dev, "clock prepare enable failed");
+ return rc;
+ }
+
+ xgene_qmtm_wr32(qmtm, QM_GLBL_DIAG_CSR_BASE_ADDR_OFFSET +
+ QM_CFG_MEM_RAM_SHUTDOWN_ADDR, 0);
+ do {
+ /* Wait for Memory to come out of shutdown */
+ usleep_range(1000, 2000);
+ xgene_qmtm_rd32(qmtm, QM_GLBL_DIAG_CSR_BASE_ADDR_OFFSET +
+ QM_CFG_MEM_RAM_SHUTDOWN_ADDR, &val);
+
+ if (mwait++ >= 1000) {
+ rc = -EIO;
+ dev_err(dev, "RAM not out of shutdown %d\n", rc);
+ clk_disable_unprepare(qmtm->clk);
+ return rc;
+ }
+ } while (val == QM_CFG_MEM_RAM_SHUTDOWN_DEFAULT);
+
+ switch (qmtm->qmtm_ip) {
+ case QMTM0:
+ case QMTM2:
+ xgene_qmtm_rd32(qmtm, CSR_RECOMB_CTRL_0_ADDR, &val);
+ val = RECOMB_EN0_SET(val, 1);
+ xgene_qmtm_wr32(qmtm, CSR_RECOMB_CTRL_0_ADDR, val);
+ break;
+ case QMTM3:
+ xgene_qmtm_wr32(qmtm, CSR_QMLITE_PBN_MAP_0_ADDR, 0x00000000);
+ }
+
+ /* program threshold set 1 and all hysteresis */
+ xgene_qmtm_wr32(qmtm, CSR_THRESHOLD0_SET1_ADDR, 100);
+ xgene_qmtm_wr32(qmtm, CSR_THRESHOLD1_SET1_ADDR, 200);
+ xgene_qmtm_wr32(qmtm, CSR_HYSTERESIS_ADDR, 0xFFFFFFFF);
+
+ /* Enable QPcore */
+ xgene_qmtm_wr32(qmtm, CSR_QM_CONFIG_ADDR, QM_ENABLE_WR(1));
+
+ /* Clear all HW queue state in case they were not de-activated */
+ memset(&qinfo, 0, sizeof(qinfo));
+ qinfo.qmtm = qmtm;
+
+ for (queue_id = 0; queue_id < qmtm->max_queues; queue_id++) {
+ qinfo.queue_id = queue_id;
+ qmtm->write_qstate(&qinfo);
+ }
+
+ return rc;
+}
+
+static int xgene_qmtm_disable(struct xgene_qmtm *qmtm)
+{
+ u32 queue_id;
+
+ for (queue_id = 0; queue_id < qmtm->max_queues; queue_id++) {
+ if (qmtm->qinfo[queue_id]) {
+ dev_err(&qmtm->pdev->dev,
+ "QMTM %d Queue ID %d Resource in use\n",
+ qmtm->qmtm_ip, queue_id);
+ return -EAGAIN;
+ }
+ }
+
+ /* Disable QPcore */
+ xgene_qmtm_wr32(qmtm, CSR_QM_CONFIG_ADDR, QM_ENABLE_WR(0));
+ clk_disable_unprepare(qmtm->clk);
+
+ return 0;
+}
+
+static struct xgene_qmtm *xgene_alloc_qmtm(struct platform_device *pdev)
+{
+ struct xgene_qmtm *qmtm;
+ int max_queues, malloc_size;
+
+ qmtm = devm_kzalloc(&pdev->dev, sizeof(struct xgene_qmtm), GFP_KERNEL);
+ if (qmtm == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate QMTM context\n");
+ return NULL;
+ }
+
+ qmtm->pdev = pdev;
+ platform_set_drvdata(pdev, qmtm);
+ max_queues = QMTM_MAX_QUEUES;
+ malloc_size = max_queues * (sizeof(struct xgene_qmtm_info *));
+ qmtm->qinfo = devm_kzalloc(&pdev->dev, malloc_size, GFP_KERNEL);
+ if (qmtm->qinfo == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate QMTM Queue context\n");
+ return NULL;
+ }
+
+ malloc_size = RES_WORD(max_queues + 31) * sizeof(u32);
+ qmtm->queue_pool = devm_kzalloc(&pdev->dev, malloc_size, GFP_KERNEL);
+ if (qmtm->queue_pool == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate QMTM Queue Pool\n");
+ return NULL;
+ }
+
+ qmtm->max_queues = max_queues;
+
+ return qmtm;
+}
+
+static int xgene_get_qmtm(struct xgene_qmtm *qmtm)
+{
+ struct platform_device *pdev = qmtm->pdev;
+ struct resource *res;
+ struct xgene_qmtm_sdev *sdev;
+ const char *name;
+ int rc, inum = 1;
+ u16 pbn;
+
+ /* Retrieve QM CSR register address and size */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get QMTM CSR region\n");
+ return -ENODEV;
+ }
+
+ qmtm->csr_vaddr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(qmtm->csr_vaddr)) {
+ dev_err(&pdev->dev, "Invalid QMTM CSR region\n");
+ return PTR_ERR(qmtm->csr_vaddr);
+ }
+
+ /* Retrieve Primary Fabric address and size */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get QMTM Fabric region\n");
+ return -ENODEV;
+ }
+
+ qmtm->fabric_vaddr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(qmtm->fabric_vaddr)) {
+ dev_err(&pdev->dev, "Invalid QMTM Fabric region\n");
+ return PTR_ERR(qmtm->fabric_vaddr);
+ }
+
+ rc = of_property_read_string(pdev->dev.of_node, "slave-name", &name);
+ if (rc < 0) {
+ dev_err(&pdev->dev, "Failed to get QMTM Ingress slave-name\n");
+ return rc;
+ }
+
+ sdev = xgene_qmtm_get_sdev((char *)name);
+ if (sdev == NULL) {
+ dev_err(&pdev->dev, "Ingress Slave error\n");
+ return -ENODEV;
+ }
+
+ qmtm->idev = sdev;
+ qmtm->qmtm_ip = sdev->qmtm_ip;
+
+ for (pbn = sdev->wq_pbn_start; pbn < (sdev->wq_pbn_start +
+ sdev->wq_pbn_count);
+ pbn++, inum++) {
+ int irq = platform_get_irq(pdev, inum);
+
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Failed to map QMTM%d PBN %d IRQ\n",
+ qmtm->qmtm_ip, pbn);
+ continue;
+ }
+
+ qmtm->dequeue_irq[pbn] = irq;
+ }
+
+ return rc;
+}
+
+static int xgene_qmtm_probe(struct platform_device *pdev)
+{
+ struct xgene_qmtm *qmtm;
+ int rc;
+
+ qmtm = xgene_alloc_qmtm(pdev);
+ if (qmtm == NULL)
+ return -ENOMEM;
+
+ rc = xgene_get_qmtm(qmtm);
+ if (rc)
+ return rc;
+
+ return xgene_qmtm_enable(qmtm);
+}
+
+static int xgene_qmtm_remove(struct platform_device *pdev)
+{
+ struct xgene_qmtm *qmtm = platform_get_drvdata(pdev);
+ return xgene_qmtm_disable(qmtm);
+}
+
+static struct of_device_id xgene_qmtm_match[] = {
+ {.compatible = "apm,xgene-qmtm-xge0",},
+ {.compatible = "apm,xgene-qmtm-soc",},
+ {.compatible = "apm,xgene-qmtm-xge2",},
+ {.compatible = "apm,xgene-qmtm-lite",},
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, xgene_qmtm_match);
+
+static struct platform_driver xgene_qmtm_driver = {
+ .driver = {
+ .name = XGENE_QMTM_DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = xgene_qmtm_match,
+ },
+ .probe = xgene_qmtm_probe,
+ .remove = xgene_qmtm_remove,
+};
+
+module_platform_driver(xgene_qmtm_driver);
+
+MODULE_VERSION(XGENE_QMTM_DRIVER_VER);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ravi Patel <rapatel@....com>");
+MODULE_DESCRIPTION(XGENE_QMTM_DRIVER_DESC);
diff --git a/drivers/misc/xgene/qmtm/xgene_qmtm_main.h b/drivers/misc/xgene/qmtm/xgene_qmtm_main.h
new file mode 100644
index 0000000..d937462
--- /dev/null
+++ b/drivers/misc/xgene/qmtm/xgene_qmtm_main.h
@@ -0,0 +1,134 @@
+/*
+ * AppliedMicro X-Gene SOC Queue Manager/Traffic Manager driver
+ *
+ * Copyright (c) 2013 Applied Micro Circuits Corporation.
+ * Author: Ravi Patel <rapatel@....com>
+ * Keyur Chudgar <kchudgar@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __XGENE_QMTM_MAIN_H__
+#define __XGENE_QMTM_MAIN_H__
+
+#include <linux/of_platform.h>
+#include <misc/xgene/xgene_qmtm.h>
+
+/* QMTM Platform Information */
+enum xgene_qmtm_pinfo {
+ STORM_QMTM,
+ MAX_PLATFORM,
+};
+
+/* QMTM IP Blocks */
+enum xgene_qmtm_ip {
+ QMTM0,
+ QMTM1,
+ QMTM2,
+ QMTM3,
+ QMTM_MAX,
+};
+
+#define QMTM_MAX_QUEUES 1024
+#define QMTM_MAX_PBN 32
+
+struct xgene_qmtm {
+ void *csr_vaddr;
+ void *fabric_vaddr;
+ u16 qmtm_ip; /* qmtm_ip, see xgene_qmtm_ip */
+ u16 error_irq;
+ u32 max_queues;
+ u16 dequeue_irq[QMTM_MAX_PBN];
+ char error_irq_s[16];
+ char error_queue_irq_s[16];
+ struct xgene_qmtm_sdev *idev;
+ u32 *queue_pool;
+ struct xgene_qmtm_qinfo *(*qinfo);
+ struct xgene_qmtm_qinfo *error_qinfo;
+ struct clk *clk;
+ struct platform_device *pdev;
+ void (*write_qstate) (struct xgene_qmtm_qinfo *qinfo);
+ void (*read_qstate) (struct xgene_qmtm_qinfo *qinfo);
+ int (*set_qstate) (struct xgene_qmtm_qinfo *qinfo);
+ void (*clr_qstate) (struct xgene_qmtm_qinfo *qinfo);
+};
+
+/* QMTM Slave */
+enum xgene_slave {
+ SLAVE_ETH0,
+ SLAVE_ETH1,
+ SLAVE_ETH2,
+ SLAVE_ETH3,
+ SLAVE_XGE0,
+ SLAVE_XGE1,
+ SLAVE_XGE2,
+ SLAVE_XGE3,
+ SLAVE_METH,
+ SLAVE_PKTDMA,
+ SLAVE_CTX_QMTM0,
+ SLAVE_CTX_QMTM1,
+ SLAVE_CTX_QMTM2,
+ SLAVE_SEC,
+ SLAVE_CLASS,
+ SLAVE_MSLIM_QMTM0,
+ SLAVE_MSLIM_QMTM1,
+ SLAVE_MSLIM_QMTM2,
+ SLAVE_MSLIM_QMTM3,
+ SLAVE_PMPRO,
+ SLAVE_SMPRO_QMTM0,
+ SLAVE_SMPRO_QMTM1,
+ SLAVE_SMPRO_QMTM2,
+ SLAVE_SMPRO_QMTM3,
+ SLAVE_CPU_QMTM0,
+ SLAVE_CPU_QMTM1,
+ SLAVE_CPU_QMTM2,
+ SLAVE_CPU_QMTM3,
+ SLAVE_MAX,
+};
+
+/* QMTM Slave IDs */
+enum xgene_qmtm_slave_id {
+ QMTM_SLAVE_ID_ETH0,
+ QMTM_SLAVE_ID_ETH1,
+ QMTM_SLAVE_ID_RES2,
+ QMTM_SLAVE_ID_PKTDMA,
+ QMTM_SLAVE_ID_CTX,
+ QMTM_SLAVE_ID_SEC,
+ QMTM_SLAVE_ID_CLASS,
+ QMTM_SLAVE_ID_MSLIM,
+ QMTM_SLAVE_ID_RES8,
+ QMTM_SLAVE_ID_RES9,
+ QMTM_SLAVE_ID_RESA,
+ QMTM_SLAVE_ID_RESB,
+ QMTM_SLAVE_ID_RESC,
+ QMTM_SLAVE_ID_PMPRO,
+ QMTM_SLAVE_ID_SMPRO,
+ QMTM_SLAVE_ID_CPU,
+ QMTM_SLAVE_ID_MAX,
+};
+
+/* QMTM Free Pool Queue modes */
+enum xgene_qmtm_fp_mode {
+ MSG_NO_CHANGE,
+ ROUND_ADDR,
+ REDUCE_LEN,
+ CHANGE_LEN,
+};
+
+#define VIRT_TO_PHYS(x) virt_to_phys(x)
+#define PHYS_TO_VIRT(x) phys_to_virt(x)
+
+/* QMTM CSR read/write routine */
+void xgene_qmtm_wr32(struct xgene_qmtm *qmtm, u32 offset, u32 data);
+void xgene_qmtm_rd32(struct xgene_qmtm *qmtm, u32 offset, u32 *data);
+
+struct xgene_qmtm_sdev *storm_qmtm_get_sdev(char *name);
+
+#endif /* __XGENE_QMTM_MAIN_H__ */
diff --git a/drivers/misc/xgene/qmtm/xgene_qmtm_storm.c b/drivers/misc/xgene/qmtm/xgene_qmtm_storm.c
new file mode 100644
index 0000000..3ec40bd
--- /dev/null
+++ b/drivers/misc/xgene/qmtm/xgene_qmtm_storm.c
@@ -0,0 +1,370 @@
+/**
+ * AppliedMicro X-Gene SOC Queue Manager/Traffic Manager driver
+ *
+ * Copyright (c) 2013 Applied Micro Circuits Corporation.
+ * Author: Ravi Patel <rapatel@....com>
+ * Keyur Chudgar <kchudgar@....com>
+ * Fushen Chen <fchen@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/slab.h>
+#include "xgene_qmtm_main.h"
+#include "xgene_qmtm_storm.h"
+
+#define CSR_QSTATE_ADDR 0x0000006c
+#define QNUMBER_WR(src) (((u32)(src)) & 0x000003ff)
+
+#define CSR_QSTATE_WR_0_ADDR 0x00000070
+#define CSR_QSTATE_WR_1_ADDR 0x00000074
+#define CSR_QSTATE_WR_2_ADDR 0x00000078
+#define CSR_QSTATE_WR_3_ADDR 0x0000007c
+#define CSR_QSTATE_WR_4_ADDR 0x00000080
+
+static struct xgene_qmtm_sdev storm_sdev[SLAVE_MAX] = {
+ [SLAVE_ETH0] = {
+ .name = "SGMII0",
+ .compatible = "apm,xgene-qmtm-soc",
+ .slave = SLAVE_ETH0,
+ .qmtm_ip = QMTM1,
+ .slave_id = QMTM_SLAVE_ID_ETH0,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_ETH1] = {
+ .name = "SGMII1",
+ .compatible = "apm,xgene-qmtm-soc",
+ .slave = SLAVE_ETH1,
+ .qmtm_ip = QMTM1,
+ .slave_id = QMTM_SLAVE_ID_ETH0,
+ .wq_pbn_start = 0x08,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x28,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_ETH2] = {
+ .name = "SGMII2",
+ .compatible = "apm,xgene-qmtm-soc",
+ .slave = SLAVE_ETH2,
+ .qmtm_ip = QMTM1,
+ .slave_id = QMTM_SLAVE_ID_ETH1,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_ETH3] = {
+ .name = "SGMII3",
+ .compatible = "apm,xgene-qmtm-soc",
+ .slave = SLAVE_ETH3,
+ .qmtm_ip = QMTM1,
+ .slave_id = QMTM_SLAVE_ID_ETH1,
+ .wq_pbn_start = 0x08,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x28,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_XGE0] = {
+ .name = "SXGMII0",
+ .compatible = "apm,xgene-qmtm-xge0",
+ .slave = SLAVE_XGE0,
+ .qmtm_ip = QMTM0,
+ .slave_id = QMTM_SLAVE_ID_ETH0,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_XGE1] = {
+ .name = "SXGMII1",
+ .compatible = "apm,xgene-qmtm-xge0",
+ .slave = SLAVE_XGE1,
+ .qmtm_ip = QMTM0,
+ .slave_id = QMTM_SLAVE_ID_ETH1,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_XGE2] = {
+ .name = "SXGMII2",
+ .compatible = "apm,xgene-qmtm-xge2",
+ .slave = SLAVE_XGE2,
+ .qmtm_ip = QMTM2,
+ .slave_id = QMTM_SLAVE_ID_ETH0,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_XGE3] = {
+ .name = "SXGMII3",
+ .compatible = "apm,xgene-qmtm-xge2",
+ .slave = SLAVE_XGE3,
+ .qmtm_ip = QMTM2,
+ .slave_id = QMTM_SLAVE_ID_ETH1,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x08,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_METH] = {
+ .name = "RGMII",
+ .compatible = "apm,xgene-qmtm-lite",
+ .slave = SLAVE_METH,
+ .qmtm_ip = QMTM3,
+ .slave_id = QMTM_SLAVE_ID_ETH0,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x04,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x04,
+ },
+ [SLAVE_PKTDMA] = {
+ .name = "PKTDMA",
+ .compatible = "apm,xgene-qmtm-soc",
+ .slave = SLAVE_PKTDMA,
+ .qmtm_ip = QMTM1,
+ .slave_id = QMTM_SLAVE_ID_PKTDMA,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x04,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x08,
+ },
+ [SLAVE_CPU_QMTM0] = {
+ .name = "CPU_QMTM0",
+ .compatible = "apm,xgene-qmtm-xge0",
+ .slave = SLAVE_CPU_QMTM0,
+ .qmtm_ip = QMTM0,
+ .slave_id = QMTM_SLAVE_ID_CPU,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x10,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x10,
+ },
+ [SLAVE_CPU_QMTM1] = {
+ .name = "CPU_QMTM1",
+ .compatible = "apm,xgene-qmtm-soc",
+ .slave = SLAVE_CPU_QMTM1,
+ .qmtm_ip = QMTM1,
+ .slave_id = QMTM_SLAVE_ID_CPU,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x20,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x20,
+ },
+ [SLAVE_CPU_QMTM2] = {
+ .name = "CPU_QMTM2",
+ .compatible = "apm,xgene-qmtm-xge2",
+ .slave = SLAVE_CPU_QMTM2,
+ .qmtm_ip = QMTM2,
+ .slave_id = QMTM_SLAVE_ID_CPU,
+ .wq_pbn_start = 0x10,
+ .wq_pbn_count = 0x10,
+ .fq_pbn_start = 0x30,
+ .fq_pbn_count = 0x10,
+ },
+ [SLAVE_CPU_QMTM3] = {
+ .name = "CPU_QMTM3",
+ .compatible = "apm,xgene-qmtm-lite",
+ .slave = SLAVE_CPU_QMTM3,
+ .qmtm_ip = QMTM3,
+ .slave_id = QMTM_SLAVE_ID_CPU,
+ .wq_pbn_start = 0x00,
+ .wq_pbn_count = 0x01,
+ .fq_pbn_start = 0x20,
+ .fq_pbn_count = 0x01,
+ },
+};
+
+static void storm_qmtm_write_qstate(struct xgene_qmtm_qinfo *qinfo)
+{
+ struct xgene_qmtm *qmtm = qinfo->qmtm;
+ u16 queue_id = qinfo->queue_id;
+ struct storm_qmtm_csr_qstate *csr_qstate =
+ &((union storm_qmtm_qstate *)qinfo->qstate)->csr;
+
+ /* write queue number */
+ queue_id = QNUMBER_WR(queue_id);
+ xgene_qmtm_wr32(qmtm, CSR_QSTATE_ADDR, (u32) queue_id);
+
+ /* write queue state */
+ xgene_qmtm_wr32(qmtm, CSR_QSTATE_WR_0_ADDR, csr_qstate->w0);
+ xgene_qmtm_wr32(qmtm, CSR_QSTATE_WR_1_ADDR, csr_qstate->w1);
+ xgene_qmtm_wr32(qmtm, CSR_QSTATE_WR_2_ADDR, csr_qstate->w2);
+ xgene_qmtm_wr32(qmtm, CSR_QSTATE_WR_3_ADDR, csr_qstate->w3);
+ xgene_qmtm_wr32(qmtm, CSR_QSTATE_WR_4_ADDR, csr_qstate->w4);
+}
+
+static void storm_qmtm_read_qstate(struct xgene_qmtm_qinfo *qinfo)
+{
+ struct xgene_qmtm *qmtm = qinfo->qmtm;
+ struct storm_qmtm_csr_qstate *qfabric = (struct storm_qmtm_csr_qstate *)
+ (qmtm->fabric_vaddr + (qinfo->queue_id << 6));
+ struct storm_qmtm_csr_qstate *csr_qstate =
+ &((union storm_qmtm_qstate *)qinfo->qstate)->csr;
+ struct storm_qmtm_pq_fp_qstate *pq_fp =
+ &((union storm_qmtm_qstate *)(qinfo->qstate))->pq;
+
+ /* read queue state */
+ csr_qstate->w0 = readl(&qfabric->w0);
+ csr_qstate->w1 = readl(&qfabric->w1);
+ csr_qstate->w2 = readl(&qfabric->w2);
+ csr_qstate->w3 = readl(&qfabric->w3);
+ csr_qstate->w4 = readl(&qfabric->w4);
+ qinfo->nummsgs = pq_fp->nummsg;
+}
+
+static int storm_qmtm_set_qstate(struct xgene_qmtm_qinfo *qinfo)
+{
+ int rc = 0;
+ struct storm_qmtm_pq_fp_qstate *pq_fp =
+ &((union storm_qmtm_qstate *)(qinfo->qstate))->pq;
+ u32 qsize = 0;
+ u8 qtype = qinfo->qtype;
+
+ if (qtype != QTYPE_PQ && qtype != QTYPE_FP) {
+ pr_err("Queue type %d is invalid\n", qinfo->qtype);
+ rc = -EINVAL;
+ goto _ret_set_qstate;
+ }
+
+ pq_fp->cfgqtype = qinfo->qtype;
+
+ /* if its a free queue, ask QMTM to set len to 0 when dealloc */
+ if (qtype == QTYPE_FP)
+ pq_fp->fp_mode = CHANGE_LEN;
+
+ if (qinfo->slave >= SLAVE_XGE0 && qinfo->slave <= SLAVE_XGE3) {
+ pq_fp->cfgRecombBuf = 1;
+ pq_fp->cfgRecombBufTimeoutL = 0xf;
+ pq_fp->cfgRecombBufTimeoutH = 0x7;
+ }
+
+ pq_fp->cfgselthrsh = 1;
+
+ /* Allow the queue to accept message with non-zero LErr */
+ pq_fp->cfgacceptlerr = 1;
+ pq_fp->qcoherent = 1;
+
+ switch (qinfo->qsize) {
+ case QSIZE_512B:
+ qsize = 512;
+ break;
+ case QSIZE_2KB:
+ qsize = 2 * 1024;
+ break;
+ case QSIZE_16KB:
+ qsize = 16 * 1024;
+ break;
+ case QSIZE_64KB:
+ qsize = 64 * 1024;
+ break;
+ case QSIZE_512KB:
+ qsize = 512 * 1024;
+ break;
+ default:
+ pr_err("Queue size %d is invalid\n", qinfo->qsize);
+ rc = -EINVAL;
+ goto _ret_set_qstate;
+ }
+
+ qinfo->qdesc = kzalloc(sizeof(struct xgene_qmtm_qdesc), GFP_KERNEL);
+
+ if (qinfo->qdesc == NULL) {
+ rc = -ENOMEM;
+ goto _ret_set_qstate;
+ }
+
+ qinfo->qdesc->count = (qtype == QTYPE_PQ) ? (qsize / 32) : (qsize / 16);
+
+ if (qinfo->flags & XGENE_SLAVE_Q_ADDR_ALLOC) {
+ qinfo->qdesc->qvaddr = kzalloc(qsize, GFP_KERNEL);
+ if (qinfo->qdesc->qvaddr == NULL) {
+ kfree(qinfo->qdesc);
+ rc = -ENOMEM;
+ goto _ret_set_qstate;
+ }
+
+ qinfo->qpaddr = (u64) VIRT_TO_PHYS(qinfo->qdesc->qvaddr);
+ } else {
+ qinfo->qdesc->qvaddr = PHYS_TO_VIRT(qinfo->qpaddr);
+ memset(qinfo->qdesc->qvaddr, 0, qsize);
+ }
+
+ if ((qtype == QTYPE_PQ) && (qinfo->slave_id == QMTM_SLAVE_ID_CPU ||
+ qinfo->slave_id == QMTM_SLAVE_ID_MSLIM)) {
+ u32 i;
+
+ for (i = 0; i < qinfo->qdesc->count; i++) {
+ u32 *slot = (u32 *)&qinfo->qdesc->msg32[i];
+
+ slot[EMPTY_SLOT_INDEX] = EMPTY_SLOT;
+ }
+ }
+
+ pq_fp->cfgstartaddr = (u32) (qinfo->qpaddr >> 8);
+ pq_fp->cfgqsize = qinfo->qsize;
+ storm_qmtm_write_qstate(qinfo);
+
+_ret_set_qstate:
+ return rc;
+}
+
+static void storm_qmtm_clr_qstate(struct xgene_qmtm_qinfo *qinfo)
+{
+ memset(qinfo->qstate, 0, sizeof(union storm_qmtm_qstate));
+ storm_qmtm_write_qstate(qinfo);
+
+ if (qinfo->flags & XGENE_SLAVE_Q_ADDR_ALLOC && qinfo->qdesc->qvaddr) {
+ kfree(qinfo->qdesc->qvaddr);
+ qinfo->qdesc->qvaddr = NULL;
+ }
+
+ kfree(qinfo->qdesc);
+}
+
+struct xgene_qmtm_sdev *storm_qmtm_get_sdev(char *name)
+{
+ struct xgene_qmtm *qmtm = NULL;
+ struct xgene_qmtm_sdev *sdev = NULL;
+ struct device_node *np = NULL;
+ struct platform_device *platdev;
+ u8 slave;
+
+ for (slave = 0; slave < SLAVE_MAX; slave++) {
+ sdev = &storm_sdev[slave];
+ if (sdev->name && strcmp(name, sdev->name) == 0) {
+ np = of_find_compatible_node(NULL, NULL,
+ sdev->compatible);
+ break;
+ }
+ }
+
+ if (np == NULL)
+ return NULL;
+
+ platdev = of_find_device_by_node(np);
+ qmtm = platform_get_drvdata(platdev);
+
+ if (!qmtm->write_qstate) {
+ qmtm->write_qstate = storm_qmtm_write_qstate;
+ qmtm->read_qstate = storm_qmtm_read_qstate;
+ qmtm->set_qstate = storm_qmtm_set_qstate;
+ qmtm->clr_qstate = storm_qmtm_clr_qstate;
+ }
+
+ sdev->qmtm = qmtm;
+ sdev->idev = qmtm->idev;
+
+ return sdev;
+}
diff --git a/drivers/misc/xgene/qmtm/xgene_qmtm_storm.h b/drivers/misc/xgene/qmtm/xgene_qmtm_storm.h
new file mode 100644
index 0000000..e6b0828
--- /dev/null
+++ b/drivers/misc/xgene/qmtm/xgene_qmtm_storm.h
@@ -0,0 +1,139 @@
+/*
+ * AppliedMicro X-Gene SOC Queue Manager/Traffic Manager driver
+ *
+ * Copyright (c) 2013 Applied Micro Circuits Corporation.
+ * Author: Ravi Patel <rapatel@....com>
+ * Keyur Chudgar <kchudgar@....com>
+ * Fushen Chen <fchen@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __XGENE_QMTM_STORM_H__
+#define __XGENE_QMTM_STORM_H__
+
+/* QMTM Queue State */
+struct storm_qmtm_csr_qstate {
+ u32 w0;
+ u32 w1;
+ u32 w2;
+ u32 w3;
+ u32 w4;
+ u32 res;
+} __packed;
+
+/*
+ * Physical or free pool queue state (pq or fp)
+ */
+struct storm_qmtm_pq_fp_qstate {
+ /* word 0 31:0 */
+ u32 resize_qid:10;
+ u32 resize_start:1;
+ u32 resize_done:1;
+ u32 cfgtmvqen:1; /* enable pq to belong to vq */
+ u32 cfgtmvq:10; /* parent vq */
+ u32 cfgsaben:1; /* enable SAB broadcasting */
+ u32 cpu_notify:8; /* cfgcpusab */
+
+ /* word 1 63:32 */
+ u32 cfgnotifyqne:1; /* enable queue not empty interrupt */
+ u32 nummsg:16;
+ u32 headptr:15;
+
+ /* word 2 95:64 */
+ u32 cfgcrid:1;
+ u32 rid:3;
+ u32 qcoherent:1;
+ u64 cfgstartaddr:34; /* 27/7 split */
+
+ /* word 3 127:96 */
+ u32 vc_chanctl:2;
+ u32 vc_chanid:2;
+ u32 slot_pending:6;
+ u32 stashing:1;
+ u32 reserved_0:1;
+ u32 cfgacceptlerr:1;
+ u32 fp_mode:3; /* free pool mode */
+ u32 cfgqsize:3; /* queue size, see xgene_qmtm_qsize */
+ u32 qstatelock:1;
+ u32 cfgRecombBuf:1;
+ u32 cfgRecombBufTimeoutL:4; /* 4/3 split */
+
+ /* word 4 159:128 */
+ u32 cfgRecombBufTimeoutH:3; /* 4/3 split */
+ u32 cfgselthrsh:3; /* associated threshold set */
+ u32 resv2:13;
+ u32 cfgqtype:2; /* queue type, refer xgene_qmtm_qtype */
+ u32 resv1:11;
+} __packed;
+
+struct storm_qmtm_vq_qstate {
+ /* word 0 31:0 */
+ u32 nummsg:18;
+ u32 cfgsaben:1; /* enable SAB broadcasting */
+ u32 cfgnotifyqne:1; /* enable queue not empty interrupt */
+ u32 cfgcrid:1; /* critical rid config */
+ u32 cpu_notify:8;
+ u32 rid:3; /* curr. region id of queue fill level */
+
+ /* word 1 63:32 */
+ u32 q7selarb:2;
+ u32 q7txallowed:1;
+ u32 q7reqvld:1;
+ u32 q7_sel:10; /* b45:36 */
+ u32 q6selarb:2;
+ u32 q6txallowed:1;
+ u32 q6reqvld:1;
+ u32 q6_sel:10; /* b59:50 */
+ u32 q5selarb:2;
+ u32 q5txallowed:1;
+ u32 q5reqvld:1;
+
+ /* word 2 95:64 */
+ u32 q5_sel:10; /* b73:64 */
+ u32 q4selarb:2; /* b75:74 */
+ u32 q4txallowed:1; /* b76 */
+ u32 q4reqvld:1;
+ u32 q4_sel:10; /* b87:78 */
+ u32 q3selarb:2;
+ u32 q3txallowed:1;
+ u32 q3reqvld:1; /* b91 */
+ u32 q3_sel_4b:4; /* b95:92 split 6/4 */
+
+ /* word 3 127:96 */
+ u32 q3_sel_6b:6; /* b101:96 split 6/4 */
+ u32 q2selarb:2;
+ u32 q2txallowed:1;
+ u32 q2reqvld:1;
+ u32 q2_sel:10; /* q2_sel_3b */
+ u32 q1selarb:2;
+ u32 q1txallowed:1;
+ u32 q1reqvld:1;
+ u32 q1_sel_8b:8; /* b127:120 split 2/8 */
+
+ /* word 4 159:128 */
+ u32 q1_sel_2b:2; /* b129:128 split 2/8 */
+ u32 q0selarb:2;
+ u32 q0txallowed:1;
+ u32 q0reqvld:1;
+ u32 q0_sel:10;
+ u32 cfgselthrsh:3; /* associated threshold set */
+ u32 cfgqtype:2; /* queue type, refer xgene_qmtm_qtype */
+ u32 resv1:11;
+};
+
+union storm_qmtm_qstate {
+ struct storm_qmtm_csr_qstate csr;
+ struct storm_qmtm_pq_fp_qstate pq;
+ struct storm_qmtm_pq_fp_qstate fp;
+ struct storm_qmtm_vq_qstate vq;
+} __packed;
+
+#endif /* __XGENE_QMTM_STORM_H__ */
diff --git a/include/misc/xgene/xgene_qmtm.h b/include/misc/xgene/xgene_qmtm.h
new file mode 100644
index 0000000..d7b0930
--- /dev/null
+++ b/include/misc/xgene/xgene_qmtm.h
@@ -0,0 +1,277 @@
+/*
+ * AppliedMicro X-Gene SOC Queue Manager/Traffic Manager driver
+ *
+ * Copyright (c) 2013 Applied Micro Circuits Corporation.
+ * Author: Ravi Patel <rapatel@....com>
+ * Keyur Chudgar <kchudgar@....com>
+ * Fushen Chen <fchen@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __XGENE_QMTM_H__
+#define __XGENE_QMTM_H__
+
+/* QMTM Queue types */
+enum xgene_qmtm_qtype {
+ QTYPE_DISABLED, /* Queue Type is un-configured or disabled */
+ QTYPE_PQ, /* Queue Type is Physical Work Queue */
+ QTYPE_FP, /* Queue Type is Free Pool Queue */
+ QTYPE_VQ, /* Queue Type is Virtual Queue */
+ QTYPE_MAX,
+};
+
+/* QMTM Queue possible sizes */
+enum xgene_qmtm_qsize {
+ QSIZE_512B,
+ QSIZE_2KB,
+ QSIZE_16KB,
+ QSIZE_64KB,
+ QSIZE_512KB,
+ QSIZE_MAX,
+};
+
+/* QMTM Queue Access Method */
+enum xgene_qmtm_qaccess {
+ QACCESS_ALT, /* Alternate enq/deq */
+ QACCESS_QMI, /* Access using QMI interface */
+ QACCESS_MBOX, /* Access using mailboxes */
+ QACCESS_MAX,
+};
+
+/* QMTM Data Length encoded as per QM message format */
+enum xgene_qmtm_data_len {
+ DATA_LEN_256B = 0x0100,
+ DATA_LEN_1K = 0x0400,
+ DATA_LEN_2K = 0x0800,
+ DATA_LEN_4K = 0x1000,
+ DATA_LEN_16K = 0x4000,
+};
+
+enum xgene_qmtm_mask_len {
+ MASK_LEN_256B = (DATA_LEN_256B - 1),
+ MASK_LEN_1K = (DATA_LEN_1K - 1),
+ MASK_LEN_2K = (DATA_LEN_2K - 1),
+ MASK_LEN_4K = (DATA_LEN_4K - 1),
+ MASK_LEN_16K = (DATA_LEN_16K - 1),
+};
+
+/* QMTM Buffer Length encoded as per QM message format */
+enum xgene_qmtm_buf_len {
+ BUF_LEN_256B = 0x7000,
+ BUF_LEN_1K = 0x6000,
+ BUF_LEN_2K = 0x5000,
+ BUF_LEN_4K = 0x4000,
+ BUF_LEN_16K = 0x0000,
+};
+
+/* QMTM messaging structures */
+/* 16 byte QMTM message format */
+struct xgene_qmtm_msg16 {
+ u32 UserInfo;
+
+ u32 FPQNum:12;
+ u32 Rv2:2;
+ u32 ELErr:2;
+ u32 LEI:2;
+ u32 NV:1;
+ u32 LL:1;
+ u32 PB:1;
+ u32 HB:1;
+ u32 Rv:1;
+ u32 IN:1;
+ u32 RType:4;
+ u32 LErr:3;
+ u32 HL:1;
+
+ u64 DataAddr:42; /* 32/10 split */
+ u32 Rv6:6;
+ u32 BufDataLen:15;
+ u32 C:1;
+} __packed;
+
+/* Upper 16 byte portion of 32 byte of QMTM message format */
+struct xgene_qmtm_msg_up16 {
+ u64 H0Info_msb:48;
+ u32 TotDataLengthLinkListLSBs:12;
+ u32 Rv1:1;
+ u32 DR:1;
+ u32 Rv0:1;
+ u32 HR:1;
+
+ u64 H0Info_lsb:48;
+ u32 H0Enq_Num:12;
+ u32 H0FPSel:4;
+} __packed;
+
+/* 8 byte portion of QMTM extended (64B) message format */
+struct xgene_qmtm_msg_ext8 {
+ u64 NxtDataAddr:42;
+ u32 Rv2:2;
+ u32 NxtFPQNum:4;
+ u32 NxtBufDataLength:15;
+ u32 Rv1:1;
+} __packed;
+
+/* 8 byte Link list portion of QMTM extended (64B) message format */
+struct xgene_qmtm_msg_ll8 {
+ u64 NxtDataPtr:42;
+ u32 Rv2:2;
+ u32 NxtFPQNum:4;
+ u8 NxtLinkListength;
+ u8 TotDataLengthLinkListMSBs;
+} __packed;
+
+/* This structure represents 32 byte QMTM message format */
+struct xgene_qmtm_msg32 {
+ struct xgene_qmtm_msg16 msg16;
+ struct xgene_qmtm_msg_up16 msgup16;
+} __packed;
+
+ /* 32 byte of QMTM extended (64B) message format */
+struct xgene_qmtm_msg_ext32 {
+ struct xgene_qmtm_msg_ext8 msg8_2;
+ struct xgene_qmtm_msg_ext8 msg8_1;
+ union {
+ struct xgene_qmtm_msg_ext8 msg8_4;
+ struct xgene_qmtm_msg_ll8 msg8_ll;
+ };
+ struct xgene_qmtm_msg_ext8 msg8_3;
+} __packed;
+
+/* 64 byte QMTM message format */
+struct xgene_qmtm_msg64 {
+ struct xgene_qmtm_msg32 msg32_1;
+ struct xgene_qmtm_msg_ext32 msg32_2;
+} __packed;
+
+/* Empty Slot Soft Signature */
+#define EMPTY_SLOT_INDEX 7
+#define EMPTY_SLOT 0x22222222
+
+/* Destination QM, 2 MSb in work queue, dstqid */
+#define QMTM_QUEUE_ID(qm, qid) (((u16)(qm) << 10) | qid)
+
+/* QMTM Slave Device Information */
+struct xgene_qmtm_sdev {
+ u8 qmtm_ip;
+ u8 slave;
+ u8 wq_pbn_start;
+ u8 wq_pbn_count;
+ u8 fq_pbn_start;
+ u8 fq_pbn_count;
+ u16 slave_id; /* slave id see xgene_qmtm_slave_id */
+ u32 wq_pbn_pool; /* Bit mask indicates in use WQ PBN */
+ u32 fq_pbn_pool; /* Bit mask indicates in use FP PBN */
+ char *name;
+ char *compatible;
+ struct xgene_qmtm *qmtm;
+ struct xgene_qmtm_sdev *idev;
+};
+
+/* QMTM Queue Information structure */
+/* Per queue descriptor */
+struct xgene_qmtm_qdesc {
+ u16 qhead;
+ u16 qtail;
+ u16 count;
+ u16 irq;
+ void *command;
+ union {
+ void *qvaddr;
+ struct xgene_qmtm_msg16 *msg16;
+ struct xgene_qmtm_msg32 *msg32;
+ };
+};
+
+/* Per queue state database */
+struct xgene_qmtm_qinfo {
+ u8 slave;
+ u8 qtype;
+ u8 qsize;
+ u8 qaccess;
+ u8 flags;
+ u8 qmtm_ip;
+ u8 slave_id;
+ u8 pbn;
+ u16 queue_id;
+ u16 nummsgs;
+ u32 pbm_state;
+ u64 qpaddr;
+ void *qfabric;
+ u32 qstate[6];
+ struct xgene_qmtm_qdesc *qdesc;
+ struct xgene_qmtm_sdev *sdev;
+ struct xgene_qmtm *qmtm;
+};
+
+/* QMTM Queue Information flags */
+#define XGENE_SLAVE_PB_CONFIGURE 0x01
+#define XGENE_SLAVE_Q_ADDR_ALLOC 0x02
+#define XGENE_SLAVE_DEFAULT_FLAGS (XGENE_SLAVE_PB_CONFIGURE | \
+ XGENE_SLAVE_Q_ADDR_ALLOC)
+
+static inline u16 xgene_qmtm_encode_bufdatalen(u32 len)
+{
+ if (len <= DATA_LEN_256B)
+ return BUF_LEN_256B | (len & MASK_LEN_256B);
+ else if (len <= DATA_LEN_1K)
+ return BUF_LEN_1K | (len & MASK_LEN_1K);
+ else if (len <= DATA_LEN_2K)
+ return BUF_LEN_2K | (len & MASK_LEN_2K);
+ else if (len <= DATA_LEN_4K)
+ return BUF_LEN_4K | (len & MASK_LEN_4K);
+ else if (len < DATA_LEN_16K)
+ return BUF_LEN_16K | (len & MASK_LEN_16K);
+ else
+ return BUF_LEN_16K;
+}
+
+static inline u16 xgene_qmtm_encode_datalen(u32 len)
+{
+ return len & MASK_LEN_16K;
+}
+
+static inline u32 xgene_qmtm_decode_datalen(u16 bufdatalen)
+{
+ switch (bufdatalen & BUF_LEN_256B) {
+ case BUF_LEN_256B:
+ return bufdatalen & MASK_LEN_256B ? : DATA_LEN_256B;
+ case BUF_LEN_1K:
+ return bufdatalen & MASK_LEN_1K ? : DATA_LEN_1K;
+ case BUF_LEN_2K:
+ return bufdatalen & MASK_LEN_2K ? : DATA_LEN_2K;
+ case BUF_LEN_4K:
+ return bufdatalen & MASK_LEN_4K ? : DATA_LEN_4K;
+ default:
+ return bufdatalen & MASK_LEN_16K ? : DATA_LEN_16K;
+ };
+}
+
+struct xgene_qmtm_sdev *xgene_qmtm_get_sdev(char *name);
+
+int xgene_qmtm_set_qinfo(struct xgene_qmtm_qinfo *qinfo);
+
+void xgene_qmtm_clr_qinfo(struct xgene_qmtm_qinfo *qinfo);
+
+void xgene_qmtm_read_qstate(struct xgene_qmtm_qinfo *qinfo);
+
+void xgene_qmtm_fp_dealloc_msg(struct xgene_qmtm_qdesc *qdesc,
+ struct xgene_qmtm_msg16 *msg);
+
+void xgene_qmtm_enqueue_msg(struct xgene_qmtm_qdesc *qdesc,
+ struct xgene_qmtm_msg64 *msg);
+
+int xgene_qmtm_dequeue_msg(struct xgene_qmtm_qdesc *qdesc,
+ struct xgene_qmtm_msg64 *msg);
+
+int xgene_qmtm_intr_coalesce(struct xgene_qmtm_qinfo *qinfo, u8 tap);
+
+#endif /* __XGENE_QMTM_H__ */
--
1.7.9.5
--
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