Merge git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci

drivers/scsi/Kconfig

@@ -830,6 +830,19 @@ config SCSI_GDTH
 	  To compile this driver as a module, choose M here: the
 	  module will be called gdth.
 
+config SCSI_ISCI
+	tristate "Intel(R) C600 Series Chipset SAS Controller"
+	depends on PCI && SCSI
+	depends on X86
+	# (temporary): known alpha quality driver
+	depends on EXPERIMENTAL
+	select SCSI_SAS_LIBSAS
+	---help---
+	  This driver supports the 6Gb/s SAS capabilities of the storage
+	  control unit found in the Intel(R) C600 series chipset.
+
+	  The experimental tag will be removed after the driver exits alpha
+
 config SCSI_GENERIC_NCR5380
 	tristate "Generic NCR5380/53c400 SCSI PIO support"
 	depends on ISA && SCSI

drivers/scsi/Makefile

@@ -73,6 +73,7 @@ obj-$(CONFIG_SCSI_AACRAID)	+= aacraid/
 obj-$(CONFIG_SCSI_AIC7XXX_OLD)	+= aic7xxx_old.o
 obj-$(CONFIG_SCSI_AIC94XX)	+= aic94xx/
 obj-$(CONFIG_SCSI_PM8001)	+= pm8001/
+obj-$(CONFIG_SCSI_ISCI)		+= isci/
 obj-$(CONFIG_SCSI_IPS)		+= ips.o
 obj-$(CONFIG_SCSI_FD_MCS)	+= fd_mcs.o
 obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o

drivers/scsi/isci/Makefile

+obj-$(CONFIG_SCSI_ISCI) += isci.o
+isci-objs := init.o phy.o request.o \
+	     remote_device.o port.o \
+	     host.o task.o probe_roms.o \
+	     remote_node_context.o \
+	     remote_node_table.o \
+	     unsolicited_frame_control.o \
+	     port_config.o \

drivers/scsi/isci/firmware/Makefile

+# Makefile for create_fw
+#
+CC=gcc
+CFLAGS=-c -Wall -O2 -g
+LDFLAGS=
+SOURCES=create_fw.c
+OBJECTS=$(SOURCES:.cpp=.o)
+EXECUTABLE=create_fw
+
+all: $(SOURCES) $(EXECUTABLE)
+
+$(EXECUTABLE): $(OBJECTS)
+	$(CC) $(LDFLAGS) $(OBJECTS) -o $@
+
+.c.o:
+	$(CC) $(CFLAGS) $< -O $@
+
+clean:
+	rm -f *.o $(EXECUTABLE)

drivers/scsi/isci/firmware/README

+This defines the temporary binary blow we are to pass to the SCU
+driver to emulate the binary firmware that we will eventually be
+able to access via NVRAM on the SCU controller.
+
+The current size of the binary blob is expected to be 149 bytes or larger
+
+Header Types:
+0x1: Phy Masks
+0x2: Phy Gens
+0x3: SAS Addrs
+0xff: End of Data
+
+ID string - u8[12]: "#SCU MAGIC#\0"
+Version - u8: 1
+SubVersion - u8: 0
+
+Header Type - u8: 0x1
+Size - u8: 8
+Phy Mask - u32[8]
+
+Header Type - u8: 0x2
+Size - u8: 8
+Phy Gen - u32[8]
+
+Header Type - u8: 0x3
+Size - u8: 8
+Sas Addr - u64[8]
+
+Header Type - u8: 0xf
+
+
+==============================================================================
+
+Place isci_firmware.bin in /lib/firmware
+Be sure to recreate the initramfs image to include the firmware.
+

drivers/scsi/isci/firmware/create_fw.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <asm/types.h>
+#include <strings.h>
+#include <stdint.h>
+
+#include "create_fw.h"
+#include "../probe_roms.h"
+
+int write_blob(struct isci_orom *isci_orom)
+{
+	FILE *fd;
+	int err;
+	size_t count;
+
+	fd = fopen(blob_name, "w+");
+	if (!fd) {
+		perror("Open file for write failed");
+		fclose(fd);
+		return -EIO;
+	}
+
+	count = fwrite(isci_orom, sizeof(struct isci_orom), 1, fd);
+	if (count != 1) {
+		perror("Write data failed");
+		fclose(fd);
+		return -EIO;
+	}
+
+	fclose(fd);
+
+	return 0;
+}
+
+void set_binary_values(struct isci_orom *isci_orom)
+{
+	int ctrl_idx, phy_idx, port_idx;
+
+	/* setting OROM signature */
+	strncpy(isci_orom->hdr.signature, sig, strlen(sig));
+	isci_orom->hdr.version = version;
+	isci_orom->hdr.total_block_length = sizeof(struct isci_orom);
+	isci_orom->hdr.hdr_length = sizeof(struct sci_bios_oem_param_block_hdr);
+	isci_orom->hdr.num_elements = num_elements;
+
+	for (ctrl_idx = 0; ctrl_idx < 2; ctrl_idx++) {
+		isci_orom->ctrl[ctrl_idx].controller.mode_type = mode_type;
+		isci_orom->ctrl[ctrl_idx].controller.max_concurrent_dev_spin_up =
+			max_num_concurrent_dev_spin_up;
+		isci_orom->ctrl[ctrl_idx].controller.do_enable_ssc =
+			enable_ssc;
+
+		for (port_idx = 0; port_idx < 4; port_idx++)
+			isci_orom->ctrl[ctrl_idx].ports[port_idx].phy_mask =
+				phy_mask[ctrl_idx][port_idx];
+
+		for (phy_idx = 0; phy_idx < 4; phy_idx++) {
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.high =
+				(__u32)(sas_addr[ctrl_idx][phy_idx] >> 32);
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.low =
+				(__u32)(sas_addr[ctrl_idx][phy_idx]);
+
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control0 =
+				afe_tx_amp_control0;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control1 =
+				afe_tx_amp_control1;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control2 =
+				afe_tx_amp_control2;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control3 =
+				afe_tx_amp_control3;
+		}
+	}
+}
+
+int main(void)
+{
+	int err;
+	struct isci_orom *isci_orom;
+
+	isci_orom = malloc(sizeof(struct isci_orom));
+	memset(isci_orom, 0, sizeof(struct isci_orom));
+
+	set_binary_values(isci_orom);
+
+	err = write_blob(isci_orom);
+	if (err < 0) {
+		free(isci_orom);
+		return err;
+	}
+
+	free(isci_orom);
+	return 0;
+}

drivers/scsi/isci/firmware/create_fw.h

+#ifndef _CREATE_FW_H_
+#define _CREATE_FW_H_
+#include "../probe_roms.h"
+
+
+/* we are configuring for 2 SCUs */
+static const int num_elements = 2;
+
+/*
+ * For all defined arrays:
+ * elements 0-3 are for SCU0, ports 0-3
+ * elements 4-7 are for SCU1, ports 0-3
+ *
+ * valid configurations for one SCU are:
+ *  P0  P1  P2  P3
+ * ----------------
+ * 0xF,0x0,0x0,0x0 # 1 x4 port
+ * 0x3,0x0,0x4,0x8 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are each x1
+ *                 # ports
+ * 0x1,0x2,0xC,0x0 # Phys 0 and 1 are each x1 ports, phy 2 and phy 3 are a x2
+ *                 # port
+ * 0x3,0x0,0xC,0x0 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are a x2 port
+ * 0x1,0x2,0x4,0x8 # Each phy is a x1 port (this is the default configuration)
+ *
+ * if there is a port/phy on which you do not wish to override the default
+ * values, use the value assigned to UNINIT_PARAM (255).
+ */
+
+/* discovery mode type (port auto config mode by default ) */
+
+/*
+ * if there is a port/phy on which you do not wish to override the default
+ * values, use the value "0000000000000000". SAS address of zero's is
+ * considered invalid and will not be used.
+ */
+#ifdef MPC
+static const int mode_type = SCIC_PORT_MANUAL_CONFIGURATION_MODE;
+static const __u8 phy_mask[2][4] = { {1, 2, 4, 8},
+				     {1, 2, 4, 8} };
+static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFFF0000001ULL,
+						     0x5FCFFFFFF0000002ULL,
+						     0x5FCFFFFFF0000003ULL,
+						     0x5FCFFFFFF0000004ULL },
+						   { 0x5FCFFFFFF0000005ULL,
+						     0x5FCFFFFFF0000006ULL,
+						     0x5FCFFFFFF0000007ULL,
+						     0x5FCFFFFFF0000008ULL } };
+#else	/* APC (default) */
+static const int mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+static const __u8 phy_mask[2][4];
+static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL },
+						   { 0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL } };
+#endif
+
+/* Maximum number of concurrent device spin up */
+static const int max_num_concurrent_dev_spin_up = 1;
+
+/* enable of ssc operation */
+static const int enable_ssc;
+
+/* AFE_TX_AMP_CONTROL */
+static const unsigned int afe_tx_amp_control0 = 0x000bdd08;
+static const unsigned int afe_tx_amp_control1 = 0x000ffc00;
+static const unsigned int afe_tx_amp_control2 = 0x000b7c09;
+static const unsigned int afe_tx_amp_control3 = 0x000afc6e;
+
+static const char blob_name[] = "isci_firmware.bin";
+static const char sig[] = "ISCUOEMB";
+static const unsigned char version = 0x10;
+
+#endif

drivers/scsi/isci/port.h

+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ISCI_PORT_H_
+#define _ISCI_PORT_H_
+
+#include <scsi/libsas.h>
+#include "isci.h"
+#include "sas.h"
+#include "phy.h"
+
+#define SCIC_SDS_DUMMY_PORT   0xFF
+
+struct isci_phy;
+struct isci_host;
+
+enum isci_status {
+	isci_freed        = 0x00,
+	isci_starting     = 0x01,
+	isci_ready        = 0x02,
+	isci_ready_for_io = 0x03,
+	isci_stopping     = 0x04,
+	isci_stopped      = 0x05,
+};
+
+/**
+ * struct isci_port - isci direct attached sas port object
+ * @event: counts bcns and port stop events (for bcn filtering)
+ * @ready_exit: several states constitute 'ready'. When exiting ready we
+ *              need to take extra port-teardown actions that are
+ *              skipped when exiting to another 'ready' state.
+ * @logical_port_index: software port index
+ * @physical_port_index: hardware port index
+ * @active_phy_mask: identifies phy members
+ * @reserved_tag:
+ * @reserved_rni: reserver for port task scheduler workaround
+ * @started_request_count: reference count for outstanding commands
+ * @not_ready_reason: set during state transitions and notified
+ * @timer: timeout start/stop operations
+ */
+struct isci_port {
+	enum isci_status status;
+	#define IPORT_BCN_BLOCKED 0
+	#define IPORT_BCN_PENDING 1
+	unsigned long flags;
+	atomic_t event;
+	struct isci_host *isci_host;
+	struct asd_sas_port sas_port;
+	struct list_head remote_dev_list;
+	spinlock_t state_lock;
+	struct list_head domain_dev_list;
+	struct completion start_complete;
+	struct completion hard_reset_complete;
+	enum sci_status hard_reset_status;
+	struct sci_base_state_machine sm;
+	bool ready_exit;
+	u8 logical_port_index;
+	u8 physical_port_index;
+	u8 active_phy_mask;
+	u16 reserved_rni;
+	u16 reserved_tag;
+	u32 started_request_count;
+	u32 assigned_device_count;
+	u32 not_ready_reason;
+	struct isci_phy *phy_table[SCI_MAX_PHYS];
+	struct isci_host *owning_controller;
+	struct sci_timer timer;
+	struct scu_port_task_scheduler_registers __iomem *port_task_scheduler_registers;
+	/* XXX rework: only one register, no need to replicate per-port */
+	u32 __iomem *port_pe_configuration_register;
+	struct scu_viit_entry __iomem *viit_registers;
+};
+
+enum sci_port_not_ready_reason_code {
+	SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
+	SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
+	SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
+	SCIC_PORT_NOT_READY_RECONFIGURING,
+
+	SCIC_PORT_NOT_READY_REASON_CODE_MAX
+};
+
+struct sci_port_end_point_properties {
+	struct sci_sas_address sas_address;
+	struct sci_phy_proto protocols;
+};
+
+struct sci_port_properties {
+	u32 index;
+	struct sci_port_end_point_properties local;
+	struct sci_port_end_point_properties remote;
+	u32 phy_mask;
+};
+
+/**
+ * enum sci_port_states - This enumeration depicts all the states for the
+ *    common port state machine.
+ *
+ *
+ */
+enum sci_port_states {
+	/**
+	 * This state indicates that the port has successfully been stopped.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the STOPPING state.
+	 */
+	SCI_PORT_STOPPED,
+
+	/**
+	 * This state indicates that the port is in the process of stopping.
+	 * In this state no new IO operations are permitted, but existing IO
+	 * operations are allowed to complete.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PORT_STOPPING,
+
+	/**
+	 * This state indicates the port is now ready.  Thus, the user is
+	 * able to perform IO operations on this port.
+	 * This state is entered from the STARTING state.
+	 */
+	SCI_PORT_READY,
+
+	/**
+	 * The substate where the port is started and ready but has no
+	 * active phys.
+	 */
+	SCI_PORT_SUB_WAITING,
+
+	/**
+	 * The substate where the port is started and ready and there is
+	 * at least one phy operational.
+	 */
+	SCI_PORT_SUB_OPERATIONAL,
+
+	/**
+	 * The substate where the port is started and there was an
+	 * add/remove phy event.  This state is only used in Automatic
+	 * Port Configuration Mode (APC)
+	 */
+	SCI_PORT_SUB_CONFIGURING,
+
+	/**
+	 * This state indicates the port is in the process of performing a hard
+	 * reset.  Thus, the user is unable to perform IO operations on this
+	 * port.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PORT_RESETTING,
+
+	/**
+	 * This state indicates the port has failed a reset request.  This state
+	 * is entered when a port reset request times out.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PORT_FAILED,
+
+
+};
+
+static inline void sci_port_decrement_request_count(struct isci_port *iport)
+{
+	if (WARN_ONCE(iport->started_request_count == 0,
+		       "%s: tried to decrement started_request_count past 0!?",
+			__func__))
+		/* pass */;
+	else
+		iport->started_request_count--;
+}
+
+#define sci_port_active_phy(port, phy) \
+	(((port)->active_phy_mask & (1 << (phy)->phy_index)) != 0)
+
+void sci_port_construct(
+	struct isci_port *iport,
+	u8 port_index,
+	struct isci_host *ihost);
+
+enum sci_status sci_port_start(struct isci_port *iport);
+enum sci_status sci_port_stop(struct isci_port *iport);
+
+enum sci_status sci_port_add_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+enum sci_status sci_port_remove_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_port_setup_transports(
+	struct isci_port *iport,
+	u32 device_id);
+
+void isci_port_bcn_enable(struct isci_host *, struct isci_port *);
+
+void sci_port_deactivate_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy,
+	bool do_notify_user);
+
+bool sci_port_link_detected(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+enum sci_status sci_port_link_up(struct isci_port *iport,
+				      struct isci_phy *iphy);
+enum sci_status sci_port_link_down(struct isci_port *iport,
+					struct isci_phy *iphy);
+
+struct isci_request;
+struct isci_remote_device;
+enum sci_status sci_port_start_io(
+	struct isci_port *iport,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_port_complete_io(
+	struct isci_port *iport,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sas_linkrate sci_port_get_max_allowed_speed(
+	struct isci_port *iport);
+
+void sci_port_broadcast_change_received(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+bool sci_port_is_valid_phy_assignment(
+	struct isci_port *iport,
+	u32 phy_index);
+
+void sci_port_get_sas_address(
+	struct isci_port *iport,
+	struct sci_sas_address *sas_address);
+
+void sci_port_get_attached_sas_address(
+	struct isci_port *iport,
+	struct sci_sas_address *sas_address);
+
+enum isci_status isci_port_get_state(
+	struct isci_port *isci_port);
+
+void isci_port_formed(struct asd_sas_phy *);
+void isci_port_deformed(struct asd_sas_phy *);
+
+void isci_port_init(
+	struct isci_port *port,
+	struct isci_host *host,
+	int index);
+
+int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
+				 struct isci_phy *iphy);
+#endif /* !defined(_ISCI_PORT_H_) */

firmware/Makefile

@@ -82,6 +82,7 @@ fw-shipped-$(CONFIG_SERIAL_8250_CS) += cis/MT5634ZLX.cis cis/RS-COM-2P.cis \
 fw-shipped-$(CONFIG_PCMCIA_SMC91C92) += ositech/Xilinx7OD.bin
 fw-shipped-$(CONFIG_SCSI_ADVANSYS) += advansys/mcode.bin advansys/38C1600.bin \
 				      advansys/3550.bin advansys/38C0800.bin
+fw-shipped-$(CONFIG_SCSI_ISCI) += isci/isci_firmware.bin
 fw-shipped-$(CONFIG_SCSI_QLOGIC_1280) += qlogic/1040.bin qlogic/1280.bin \
 					 qlogic/12160.bin
 fw-shipped-$(CONFIG_SCSI_QLOGICPTI) += qlogic/isp1000.bin

firmware/isci/isci_firmware.bin.ihex

+:10000000495343554F454D42E80018100002000087
+:1000100000000000000000000101000000000000DE
+:10002000FFFFCF5F0100000008DD0B0000FC0F00A8
+:10003000097C0B006EFC0A00FFFFCF5F010000008F
+:1000400008DD0B0000FC0F00097C0B006EFC0A00B1
+:10005000FFFFCF5F0100000008DD0B0000FC0F0078
+:10006000097C0B006EFC0A00FFFFCF5F010000005F
+:1000700008DD0B0000FC0F00097C0B006EFC0A0081
+:100080000101000000000000FFFFCF5F0200000040
+:1000900008DD0B0000FC0F00097C0B006EFC0A0061
+:1000A000FFFFCF5F0200000008DD0B0000FC0F0027
+:1000B000097C0B006EFC0A00FFFFCF5F020000000E
+:1000C00008DD0B0000FC0F00097C0B006EFC0A0031
+:1000D000FFFFCF5F0200000008DD0B0000FC0F00F7
+:0800E000097C0B006EFC0A0014
+:00000001FF