Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (277 commits)
  [SCSI] isci: fix checkpatch errors
  isci: Device reset should request sas_phy_reset(phy, true)
  isci: pare back error messsages
  isci: cleanup silicon revision detection
  isci: merge scu_unsolicited_frame.h into unsolicited_frame_control.h
  isci: merge sata.[ch] into request.c
  isci: kill 'get/set' macros
  isci: retire scic_sds_ and scic_ prefixes
  isci: unify isci_host and scic_sds_controller
  isci: unify isci_remote_device and scic_sds_remote_device
  isci: unify isci_port and scic_sds_port
  isci: fix scic_sds_remote_device_terminate_requests
  isci: unify isci_phy and scic_sds_phy
  isci: unify isci_request and scic_sds_request
  isci: rename / clean up scic_sds_stp_request
  isci: preallocate requests
  isci: combine request flags
  isci: unify can_queue tracking on the tci_pool, uplevel tag assignment
  isci: Terminate dev requests on FIS err bit rx in NCQ
  isci: fix frame received locking
  ...

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/hpsa.c

@@ -1037,6 +1037,7 @@ static void complete_scsi_command(struct CommandList *cp)
 	unsigned char sense_key;
 	unsigned char asc;      /* additional sense code */
 	unsigned char ascq;     /* additional sense code qualifier */
+	unsigned long sense_data_size;
 
 	ei = cp->err_info;
 	cmd = (struct scsi_cmnd *) cp->scsi_cmd;
@@ -1051,10 +1052,14 @@ static void complete_scsi_command(struct CommandList *cp)
 	cmd->result |= ei->ScsiStatus;
 
 	/* copy the sense data whether we need to or not. */
-	memcpy(cmd->sense_buffer, ei->SenseInfo,
-		ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
-			SCSI_SENSE_BUFFERSIZE :
-			ei->SenseLen);
+	if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
+		sense_data_size = SCSI_SENSE_BUFFERSIZE;
+	else
+		sense_data_size = sizeof(ei->SenseInfo);
+	if (ei->SenseLen < sense_data_size)
+		sense_data_size = ei->SenseLen;
+
+	memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
 	scsi_set_resid(cmd, ei->ResidualCnt);
 
 	if (ei->CommandStatus == 0) {
@@ -2580,6 +2585,7 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 		c->SG[0].Ext = 0; /* we are not chaining*/
 	}
 	hpsa_scsi_do_simple_cmd_core(h, c);
+	if (iocommand.buf_size > 0)
 		hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
 	check_ioctl_unit_attention(h, c);
 

drivers/scsi/ibmvscsi/ibmvfc.c

@@ -4306,7 +4306,7 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
 		spin_lock_irqsave(vhost->host->host_lock, flags);
 		if (rc == H_CLOSED)
 			vio_enable_interrupts(to_vio_dev(vhost->dev));
-		else if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
+		if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
 		    (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
 			ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
 			dev_err(vhost->dev, "Error after reset (rc=%d)\n", rc);

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/probe_roms.c

+/*
+ * 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.
+ */
+
+/* probe_roms - scan for oem parameters */
+
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/uaccess.h>
+#include <linux/efi.h>
+#include <asm/probe_roms.h>
+
+#include "isci.h"
+#include "task.h"
+#include "probe_roms.h"
+
+static efi_char16_t isci_efivar_name[] = {
+	'R', 's', 't', 'S', 'c', 'u', 'O'
+};
+
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev)
+{
+	void __iomem *oprom = pci_map_biosrom(pdev);
+	struct isci_orom *rom = NULL;
+	size_t len, i;
+	int j;
+	char oem_sig[4];
+	struct isci_oem_hdr oem_hdr;
+	u8 *tmp, sum;
+
+	if (!oprom)
+		return NULL;
+
+	len = pci_biosrom_size(pdev);
+	rom = devm_kzalloc(&pdev->dev, sizeof(*rom), GFP_KERNEL);
+	if (!rom) {
+		dev_warn(&pdev->dev,
+			 "Unable to allocate memory for orom\n");
+		return NULL;
+	}
+
+	for (i = 0; i < len && rom; i += ISCI_OEM_SIG_SIZE) {
+		memcpy_fromio(oem_sig, oprom + i, ISCI_OEM_SIG_SIZE);
+
+		/* we think we found the OEM table */
+		if (memcmp(oem_sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) == 0) {
+			size_t copy_len;
+
+			memcpy_fromio(&oem_hdr, oprom + i, sizeof(oem_hdr));
+
+			copy_len = min(oem_hdr.len - sizeof(oem_hdr),
+				       sizeof(*rom));
+
+			memcpy_fromio(rom,
+				      oprom + i + sizeof(oem_hdr),
+				      copy_len);
+
+			/* calculate checksum */
+			tmp = (u8 *)&oem_hdr;
+			for (j = 0, sum = 0; j < sizeof(oem_hdr); j++, tmp++)
+				sum += *tmp;
+
+			tmp = (u8 *)rom;
+			for (j = 0; j < sizeof(*rom); j++, tmp++)
+				sum += *tmp;
+
+			if (sum != 0) {
+				dev_warn(&pdev->dev,
+					 "OEM table checksum failed\n");
+				continue;
+			}
+
+			/* keep going if that's not the oem param table */
+			if (memcmp(rom->hdr.signature,
+				   ISCI_ROM_SIG,
+				   ISCI_ROM_SIG_SIZE) != 0)
+				continue;
+
+			dev_info(&pdev->dev,
+				 "OEM parameter table found in OROM\n");
+			break;
+		}
+	}
+
+	if (i >= len) {
+		dev_err(&pdev->dev, "oprom parse error\n");
+		devm_kfree(&pdev->dev, rom);
+		rom = NULL;
+	}
+	pci_unmap_biosrom(oprom);
+
+	return rom;
+}
+
+enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem,
+					  struct isci_orom *orom, int scu_index)
+{
+	/* check for valid inputs */
+	if (scu_index < 0 || scu_index >= SCI_MAX_CONTROLLERS ||
+	    scu_index > orom->hdr.num_elements || !oem)
+		return -EINVAL;
+
+	*oem = orom->ctrl[scu_index];
+	return 0;
+}
+
+struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw)
+{
+	struct isci_orom *orom = NULL, *data;
+	int i, j;
+
+	if (request_firmware(&fw, ISCI_FW_NAME, &pdev->dev) != 0)
+		return NULL;
+
+	if (fw->size < sizeof(*orom))
+		goto out;
+
+	data = (struct isci_orom *)fw->data;
+
+	if (strncmp(ISCI_ROM_SIG, data->hdr.signature,
+		    strlen(ISCI_ROM_SIG)) != 0)
+		goto out;
+
+	orom = devm_kzalloc(&pdev->dev, fw->size, GFP_KERNEL);
+	if (!orom)
+		goto out;
+
+	memcpy(orom, fw->data, fw->size);
+
+	if (is_c0(pdev))
+		goto out;
+
+	/*
+	 * deprecated: override default amp_control for pre-preproduction
+	 * silicon revisions
+	 */
+	for (i = 0; i < ARRAY_SIZE(orom->ctrl); i++)
+		for (j = 0; j < ARRAY_SIZE(orom->ctrl[i].phys); j++) {
+			orom->ctrl[i].phys[j].afe_tx_amp_control0 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control1 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control2 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control3 = 0xe7c03;
+		}
+ out:
+	release_firmware(fw);
+
+	return orom;
+}
+
+static struct efi *get_efi(void)
+{
+#ifdef CONFIG_EFI
+	return &efi;
+#else
+	return NULL;
+#endif
+}
+
+struct isci_orom *isci_get_efi_var(struct pci_dev *pdev)
+{
+	efi_status_t status;
+	struct isci_orom *rom;
+	struct isci_oem_hdr *oem_hdr;
+	u8 *tmp, sum;
+	int j;
+	unsigned long data_len;
+	u8 *efi_data;
+	u32 efi_attrib = 0;
+
+	data_len = 1024;
+	efi_data = devm_kzalloc(&pdev->dev, data_len, GFP_KERNEL);
+	if (!efi_data) {
+		dev_warn(&pdev->dev,
+			 "Unable to allocate memory for EFI data\n");
+		return NULL;
+	}
+
+	rom = (struct isci_orom *)(efi_data + sizeof(struct isci_oem_hdr));
+
+	if (get_efi())
+		status = get_efi()->get_variable(isci_efivar_name,
+						 &ISCI_EFI_VENDOR_GUID,
+						 &efi_attrib,
+						 &data_len,
+						 efi_data);
+	else
+		status = EFI_NOT_FOUND;
+
+	if (status != EFI_SUCCESS) {
+		dev_warn(&pdev->dev,
+			 "Unable to obtain EFI var data for OEM parms\n");
+		return NULL;
+	}
+
+	oem_hdr = (struct isci_oem_hdr *)efi_data;
+
+	if (memcmp(oem_hdr->sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) != 0) {
+		dev_warn(&pdev->dev,
+			 "Invalid OEM header signature\n");
+		return NULL;
+	}
+
+	/* calculate checksum */
+	tmp = (u8 *)efi_data;
+	for (j = 0, sum = 0; j < (sizeof(*oem_hdr) + sizeof(*rom)); j++, tmp++)
+		sum += *tmp;
+
+	if (sum != 0) {
+		dev_warn(&pdev->dev,
+			 "OEM table checksum failed\n");
+		return NULL;
+	}
+
+	if (memcmp(rom->hdr.signature,
+		   ISCI_ROM_SIG,
+		   ISCI_ROM_SIG_SIZE) != 0) {
+		dev_warn(&pdev->dev,
+			 "Invalid OEM table signature\n");
+		return NULL;
+	}
+
+	return rom;
+}

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
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