Merge branch 'master' into upstream

1 files changed, 1089 insertions, 0 deletions

diff --git a/drivers/scsi/aic94xx/aic94xx_sds.c b/drivers/scsi/aic94xx/aic94xx_sds.c
new file mode 100644
index 000000000000..83574b5b4e69
--- /dev/null
+++ b/drivers/scsi/aic94xx/aic94xx_sds.c
@@ -0,0 +1,1089 @@
+/*
+ * Aic94xx SAS/SATA driver access to shared data structures and memory
+ * maps.
+ *
+ * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * This file is part of the aic94xx driver.
+ *
+ * The aic94xx driver is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ * The aic94xx driver 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 the aic94xx driver; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/delay.h>
+
+#include "aic94xx.h"
+#include "aic94xx_reg.h"
+
+/* ---------- OCM stuff ---------- */
+
+struct asd_ocm_dir_ent {
+        u8 type;
+        u8 offs[3];
+        u8 _r1;
+        u8 size[3];
+} __attribute__ ((packed));
+
+struct asd_ocm_dir {
+        char sig[2];
+        u8   _r1[2];
+        u8   major;          /* 0 */
+        u8   minor;          /* 0 */
+        u8   _r2;
+        u8   num_de;
+        struct asd_ocm_dir_ent entry[15];
+} __attribute__ ((packed));
+
+#define OCM_DE_OCM_DIR                  0x00
+#define OCM_DE_WIN_DRVR                 0x01
+#define OCM_DE_BIOS_CHIM                0x02
+#define OCM_DE_RAID_ENGN                0x03
+#define OCM_DE_BIOS_INTL                0x04
+#define OCM_DE_BIOS_CHIM_OSM            0x05
+#define OCM_DE_BIOS_CHIM_DYNAMIC        0x06
+#define OCM_DE_ADDC2C_RES0              0x07
+#define OCM_DE_ADDC2C_RES1              0x08
+#define OCM_DE_ADDC2C_RES2              0x09
+#define OCM_DE_ADDC2C_RES3              0x0A
+
+#define OCM_INIT_DIR_ENTRIES    5
+/***************************************************************************
+*  OCM dircetory default
+***************************************************************************/
+static struct asd_ocm_dir OCMDirInit =
+{
+        .sig = {0x4D, 0x4F},    /* signature */
+        .num_de = OCM_INIT_DIR_ENTRIES, /* no. of directory entries */
+};
+
+/***************************************************************************
+*  OCM dircetory Entries default
+***************************************************************************/
+static struct asd_ocm_dir_ent OCMDirEntriesInit[OCM_INIT_DIR_ENTRIES] =
+{
+        {
+                .type = (OCM_DE_ADDC2C_RES0),   /* Entry type  */
+                .offs = {128},                  /* Offset */
+                .size = {0, 4},                 /* size */
+        },
+        {
+                .type = (OCM_DE_ADDC2C_RES1),   /* Entry type  */
+                .offs = {128, 4},               /* Offset */
+                .size = {0, 4},                 /* size */
+        },
+        {
+                .type = (OCM_DE_ADDC2C_RES2),   /* Entry type  */
+                .offs = {128, 8},               /* Offset */
+                .size = {0, 4},                 /* size */
+        },
+        {
+                .type = (OCM_DE_ADDC2C_RES3),   /* Entry type  */
+                .offs = {128, 12},              /* Offset */
+                .size = {0, 4},                 /* size */
+        },
+        {
+                .type = (OCM_DE_WIN_DRVR),      /* Entry type  */
+                .offs = {128, 16},              /* Offset */
+                .size = {128, 235, 1},          /* size */
+        },
+};
+
+struct asd_bios_chim_struct {
+        char sig[4];
+        u8   major;          /* 1 */
+        u8   minor;          /* 0 */
+        u8   bios_major;
+        u8   bios_minor;
+        __le32  bios_build;
+        u8   flags;
+        u8   pci_slot;
+        __le16  ue_num;
+        __le16  ue_size;
+        u8  _r[14];
+        /* The unit element array is right here.
+         */
+} __attribute__ ((packed));
+
+/**
+ * asd_read_ocm_seg - read an on chip memory (OCM) segment
+ * @asd_ha: pointer to the host adapter structure
+ * @buffer: where to write the read data
+ * @offs: offset into OCM where to read from
+ * @size: how many bytes to read
+ *
+ * Return the number of bytes not read. Return 0 on success.
+ */
+static int asd_read_ocm_seg(struct asd_ha_struct *asd_ha, void *buffer,
+                            u32 offs, int size)
+{
+        u8 *p = buffer;
+        if (unlikely(asd_ha->iospace))
+                asd_read_reg_string(asd_ha, buffer, offs+OCM_BASE_ADDR, size);
+        else {
+                for ( ; size > 0; size--, offs++, p++)
+                        *p = asd_read_ocm_byte(asd_ha, offs);
+        }
+        return size;
+}
+
+static int asd_read_ocm_dir(struct asd_ha_struct *asd_ha,
+                            struct asd_ocm_dir *dir, u32 offs)
+{
+        int err = asd_read_ocm_seg(asd_ha, dir, offs, sizeof(*dir));
+        if (err) {
+                ASD_DPRINTK("couldn't read ocm segment\n");
+                return err;
+        }
+
+        if (dir->sig[0] != 'M' || dir->sig[1] != 'O') {
+                ASD_DPRINTK("no valid dir signature(%c%c) at start of OCM\n",
+                            dir->sig[0], dir->sig[1]);
+                return -ENOENT;
+        }
+        if (dir->major != 0) {
+                asd_printk("unsupported major version of ocm dir:0x%x\n",
+                           dir->major);
+                return -ENOENT;
+        }
+        dir->num_de &= 0xf;
+        return 0;
+}
+
+/**
+ * asd_write_ocm_seg - write an on chip memory (OCM) segment
+ * @asd_ha: pointer to the host adapter structure
+ * @buffer: where to read the write data
+ * @offs: offset into OCM to write to
+ * @size: how many bytes to write
+ *
+ * Return the number of bytes not written. Return 0 on success.
+ */
+static void asd_write_ocm_seg(struct asd_ha_struct *asd_ha, void *buffer,
+                            u32 offs, int size)
+{
+        u8 *p = buffer;
+        if (unlikely(asd_ha->iospace))
+                asd_write_reg_string(asd_ha, buffer, offs+OCM_BASE_ADDR, size);
+        else {
+                for ( ; size > 0; size--, offs++, p++)
+                        asd_write_ocm_byte(asd_ha, offs, *p);
+        }
+        return;
+}
+
+#define THREE_TO_NUM(X) ((X)[0] | ((X)[1] << 8) | ((X)[2] << 16))
+
+static int asd_find_dir_entry(struct asd_ocm_dir *dir, u8 type,
+                              u32 *offs, u32 *size)
+{
+        int i;
+        struct asd_ocm_dir_ent *ent;
+
+        for (i = 0; i < dir->num_de; i++) {
+                if (dir->entry[i].type == type)
+                        break;
+        }
+        if (i >= dir->num_de)
+                return -ENOENT;
+        ent = &dir->entry[i];
+        *offs = (u32) THREE_TO_NUM(ent->offs);
+        *size = (u32) THREE_TO_NUM(ent->size);
+        return 0;
+}
+
+#define OCM_BIOS_CHIM_DE  2
+#define BC_BIOS_PRESENT   1
+
+static int asd_get_bios_chim(struct asd_ha_struct *asd_ha,
+                             struct asd_ocm_dir *dir)
+{
+        int err;
+        struct asd_bios_chim_struct *bc_struct;
+        u32 offs, size;
+
+        err = asd_find_dir_entry(dir, OCM_BIOS_CHIM_DE, &offs, &size);
+        if (err) {
+                ASD_DPRINTK("couldn't find BIOS_CHIM dir ent\n");
+                goto out;
+        }
+        err = -ENOMEM;
+        bc_struct = kmalloc(sizeof(*bc_struct), GFP_KERNEL);
+        if (!bc_struct) {
+                asd_printk("no memory for bios_chim struct\n");
+                goto out;
+        }
+        err = asd_read_ocm_seg(asd_ha, (void *)bc_struct, offs,
+                               sizeof(*bc_struct));
+        if (err) {
+                ASD_DPRINTK("couldn't read ocm segment\n");
+                goto out2;
+        }
+        if (strncmp(bc_struct->sig, "SOIB", 4)
+            && strncmp(bc_struct->sig, "IPSA", 4)) {
+                ASD_DPRINTK("BIOS_CHIM entry has no valid sig(%c%c%c%c)\n",
+                            bc_struct->sig[0], bc_struct->sig[1],
+                            bc_struct->sig[2], bc_struct->sig[3]);
+                err = -ENOENT;
+                goto out2;
+        }
+        if (bc_struct->major != 1) {
+                asd_printk("BIOS_CHIM unsupported major version:0x%x\n",
+                           bc_struct->major);
+                err = -ENOENT;
+                goto out2;
+        }
+        if (bc_struct->flags & BC_BIOS_PRESENT) {
+                asd_ha->hw_prof.bios.present = 1;
+                asd_ha->hw_prof.bios.maj = bc_struct->bios_major;
+                asd_ha->hw_prof.bios.min = bc_struct->bios_minor;
+                asd_ha->hw_prof.bios.bld = le32_to_cpu(bc_struct->bios_build);
+                ASD_DPRINTK("BIOS present (%d,%d), %d\n",
+                            asd_ha->hw_prof.bios.maj,
+                            asd_ha->hw_prof.bios.min,
+                            asd_ha->hw_prof.bios.bld);
+        }
+        asd_ha->hw_prof.ue.num = le16_to_cpu(bc_struct->ue_num);
+        asd_ha->hw_prof.ue.size= le16_to_cpu(bc_struct->ue_size);
+        ASD_DPRINTK("ue num:%d, ue size:%d\n", asd_ha->hw_prof.ue.num,
+                    asd_ha->hw_prof.ue.size);
+        size = asd_ha->hw_prof.ue.num * asd_ha->hw_prof.ue.size;
+        if (size > 0) {
+                err = -ENOMEM;
+                asd_ha->hw_prof.ue.area = kmalloc(size, GFP_KERNEL);
+                if (!asd_ha->hw_prof.ue.area)
+                        goto out2;
+                err = asd_read_ocm_seg(asd_ha, (void *)asd_ha->hw_prof.ue.area,
+                                       offs + sizeof(*bc_struct), size);
+                if (err) {
+                        kfree(asd_ha->hw_prof.ue.area);
+                        asd_ha->hw_prof.ue.area = NULL;
+                        asd_ha->hw_prof.ue.num  = 0;
+                        asd_ha->hw_prof.ue.size = 0;
+                        ASD_DPRINTK("couldn't read ue entries(%d)\n", err);
+                }
+        }
+out2:
+        kfree(bc_struct);
+out:
+        return err;
+}
+
+static void
+asd_hwi_initialize_ocm_dir (struct asd_ha_struct *asd_ha)
+{
+        int i;
+
+        /* Zero OCM */
+        for (i = 0; i < OCM_MAX_SIZE; i += 4)
+                asd_write_ocm_dword(asd_ha, i, 0);
+
+        /* Write Dir */
+        asd_write_ocm_seg(asd_ha, &OCMDirInit, 0,
+                          sizeof(struct asd_ocm_dir));
+
+        /* Write Dir Entries */
+        for (i = 0; i < OCM_INIT_DIR_ENTRIES; i++)
+                asd_write_ocm_seg(asd_ha, &OCMDirEntriesInit[i],
+                                  sizeof(struct asd_ocm_dir) +
+                                  (i * sizeof(struct asd_ocm_dir_ent))
+                                  , sizeof(struct asd_ocm_dir_ent));
+
+}
+
+static int
+asd_hwi_check_ocm_access (struct asd_ha_struct *asd_ha)
+{
+        struct pci_dev *pcidev = asd_ha->pcidev;
+        u32 reg;
+        int err = 0;
+        u32 v;
+
+        /* check if OCM has been initialized by BIOS */
+        reg = asd_read_reg_dword(asd_ha, EXSICNFGR);
+
+        if (!(reg & OCMINITIALIZED)) {
+                err = pci_read_config_dword(pcidev, PCIC_INTRPT_STAT, &v);
+                if (err) {
+                        asd_printk("couldn't access PCIC_INTRPT_STAT of %s\n",
+                                        pci_name(pcidev));
+                        goto out;
+                }
+
+                printk(KERN_INFO "OCM is not initialized by BIOS,"
+                       "reinitialize it and ignore it, current IntrptStatus"
+                       "is 0x%x\n", v);
+
+                if (v)
+                        err = pci_write_config_dword(pcidev,
+                                                     PCIC_INTRPT_STAT, v);
+                if (err) {
+                        asd_printk("couldn't write PCIC_INTRPT_STAT of %s\n",
+                                        pci_name(pcidev));
+                        goto out;
+                }
+
+                asd_hwi_initialize_ocm_dir(asd_ha);
+
+        }
+out:
+        return err;
+}
+
+/**
+ * asd_read_ocm - read on chip memory (OCM)
+ * @asd_ha: pointer to the host adapter structure
+ */
+int asd_read_ocm(struct asd_ha_struct *asd_ha)
+{
+        int err;
+        struct asd_ocm_dir *dir;
+
+        if (asd_hwi_check_ocm_access(asd_ha))
+                return -1;
+
+        dir = kmalloc(sizeof(*dir), GFP_KERNEL);
+        if (!dir) {
+                asd_printk("no memory for ocm dir\n");
+                return -ENOMEM;
+        }
+
+        err = asd_read_ocm_dir(asd_ha, dir, 0);
+        if (err)
+                goto out;
+
+        err = asd_get_bios_chim(asd_ha, dir);
+out:
+        kfree(dir);
+        return err;
+}
+
+/* ---------- FLASH stuff ---------- */
+
+#define FLASH_RESET                     0xF0
+
+#define FLASH_SIZE                      0x200000
+#define FLASH_DIR_COOKIE                "*** ADAPTEC FLASH DIRECTORY *** "
+#define FLASH_NEXT_ENTRY_OFFS           0x2000
+#define FLASH_MAX_DIR_ENTRIES           32
+
+#define FLASH_DE_TYPE_MASK              0x3FFFFFFF
+#define FLASH_DE_MS                     0x120
+#define FLASH_DE_CTRL_A_USER            0xE0
+
+struct asd_flash_de {
+        __le32   type;
+        __le32   offs;
+        __le32   pad_size;
+        __le32   image_size;
+        __le32   chksum;
+        u8       _r[12];
+        u8       version[32];
+} __attribute__ ((packed));
+
+struct asd_flash_dir {
+        u8    cookie[32];
+        __le32   rev;             /* 2 */
+        __le32   chksum;
+        __le32   chksum_antidote;
+        __le32   bld;
+        u8    bld_id[32];         /* build id data */
+        u8    ver_data[32];       /* date and time of build */
+        __le32   ae_mask;
+        __le32   v_mask;
+        __le32   oc_mask;
+        u8    _r[20];
+        struct asd_flash_de dir_entry[FLASH_MAX_DIR_ENTRIES];
+} __attribute__ ((packed));
+
+struct asd_manuf_sec {
+        char  sig[2];             /* 'S', 'M' */
+        u16   offs_next;
+        u8    maj;           /* 0 */
+        u8    min;           /* 0 */
+        u16   chksum;
+        u16   size;
+        u8    _r[6];
+        u8    sas_addr[SAS_ADDR_SIZE];
+        u8    pcba_sn[ASD_PCBA_SN_SIZE];
+        /* Here start the other segments */
+        u8    linked_list[0];
+} __attribute__ ((packed));
+
+struct asd_manuf_phy_desc {
+        u8    state;         /* low 4 bits */
+#define MS_PHY_STATE_ENABLEABLE 0
+#define MS_PHY_STATE_REPORTED   1
+#define MS_PHY_STATE_HIDDEN     2
+        u8    phy_id;
+        u16   _r;
+        u8    phy_control_0; /* mode 5 reg 0x160 */
+        u8    phy_control_1; /* mode 5 reg 0x161 */
+        u8    phy_control_2; /* mode 5 reg 0x162 */
+        u8    phy_control_3; /* mode 5 reg 0x163 */
+} __attribute__ ((packed));
+
+struct asd_manuf_phy_param {
+        char  sig[2];             /* 'P', 'M' */
+        u16   next;
+        u8    maj;           /* 0 */
+        u8    min;           /* 2 */
+        u8    num_phy_desc;  /* 8 */
+        u8    phy_desc_size; /* 8 */
+        u8    _r[3];
+        u8    usage_model_id;
+        u32   _r2;
+        struct asd_manuf_phy_desc phy_desc[ASD_MAX_PHYS];
+} __attribute__ ((packed));
+
+#if 0
+static const char *asd_sb_type[] = {
+        "unknown",
+        "SGPIO",
+        [2 ... 0x7F] = "unknown",
+        [0x80] = "ADPT_I2C",
+        [0x81 ... 0xFF] = "VENDOR_UNIQUExx"
+};
+#endif
+
+struct asd_ms_sb_desc {
+        u8    type;
+        u8    node_desc_index;
+        u8    conn_desc_index;
+        u8    _recvd[0];
+} __attribute__ ((packed));
+
+#if 0
+static const char *asd_conn_type[] = {
+        [0 ... 7] = "unknown",
+        "SFF8470",
+        "SFF8482",
+        "SFF8484",
+        [0x80] = "PCIX_DAUGHTER0",
+        [0x81] = "SAS_DAUGHTER0",
+        [0x82 ... 0xFF] = "VENDOR_UNIQUExx"
+};
+
+static const char *asd_conn_location[] = {
+        "unknown",
+        "internal",
+        "external",
+        "board_to_board",
+};
+#endif
+
+struct asd_ms_conn_desc {
+        u8    type;
+        u8    location;
+        u8    num_sideband_desc;
+        u8    size_sideband_desc;
+        u32   _resvd;
+        u8    name[16];
+        struct asd_ms_sb_desc sb_desc[0];
+} __attribute__ ((packed));
+
+struct asd_nd_phy_desc {
+        u8    vp_attch_type;
+        u8    attch_specific[0];
+} __attribute__ ((packed));
+
+#if 0
+static const char *asd_node_type[] = {
+        "IOP",
+        "IO_CONTROLLER",
+        "EXPANDER",
+        "PORT_MULTIPLIER",
+        "PORT_MULTIPLEXER",
+        "MULTI_DROP_I2C_BUS",
+};
+#endif
+
+struct asd_ms_node_desc {
+        u8    type;
+        u8    num_phy_desc;
+        u8    size_phy_desc;
+        u8    _resvd;
+        u8    name[16];
+        struct asd_nd_phy_desc phy_desc[0];
+} __attribute__ ((packed));
+
+struct asd_ms_conn_map {
+        char  sig[2];             /* 'M', 'C' */
+        __le16 next;
+        u8    maj;                /* 0 */
+        u8    min;                /* 0 */
+        __le16 cm_size;           /* size of this struct */
+        u8    num_conn;
+        u8    conn_size;
+        u8    num_nodes;
+        u8    usage_model_id;
+        u32   _resvd;
+        struct asd_ms_conn_desc conn_desc[0];
+        struct asd_ms_node_desc node_desc[0];
+} __attribute__ ((packed));
+
+struct asd_ctrla_phy_entry {
+        u8    sas_addr[SAS_ADDR_SIZE];
+        u8    sas_link_rates;  /* max in hi bits, min in low bits */
+        u8    flags;
+        u8    sata_link_rates;
+        u8    _r[5];
+} __attribute__ ((packed));
+
+struct asd_ctrla_phy_settings {
+        u8    id0;                /* P'h'y */
+        u8    _r;
+        u16   next;
+        u8    num_phys;       /* number of PHYs in the PCI function */
+        u8    _r2[3];
+        struct asd_ctrla_phy_entry phy_ent[ASD_MAX_PHYS];
+} __attribute__ ((packed));
+
+struct asd_ll_el {
+        u8   id0;
+        u8   id1;
+        __le16  next;
+        u8   something_here[0];
+} __attribute__ ((packed));
+
+static int asd_poll_flash(struct asd_ha_struct *asd_ha)
+{
+        int c;
+        u8 d;
+
+        for (c = 5000; c > 0; c--) {
+                d  = asd_read_reg_byte(asd_ha, asd_ha->hw_prof.flash.bar);
+                d ^= asd_read_reg_byte(asd_ha, asd_ha->hw_prof.flash.bar);
+                if (!d)
+                        return 0;
+                udelay(5);
+        }
+        return -ENOENT;
+}
+
+static int asd_reset_flash(struct asd_ha_struct *asd_ha)
+{
+        int err;
+
+        err = asd_poll_flash(asd_ha);
+        if (err)
+                return err;
+        asd_write_reg_byte(asd_ha, asd_ha->hw_prof.flash.bar, FLASH_RESET);
+        err = asd_poll_flash(asd_ha);
+
+        return err;
+}
+
+static inline int asd_read_flash_seg(struct asd_ha_struct *asd_ha,
+                                     void *buffer, u32 offs, int size)
+{
+        asd_read_reg_string(asd_ha, buffer, asd_ha->hw_prof.flash.bar+offs,
+                            size);
+        return 0;
+}
+
+/**
+ * asd_find_flash_dir - finds and reads the flash directory
+ * @asd_ha: pointer to the host adapter structure
+ * @flash_dir: pointer to flash directory structure
+ *
+ * If found, the flash directory segment will be copied to
+ * @flash_dir.  Return 1 if found, 0 if not.
+ */
+static int asd_find_flash_dir(struct asd_ha_struct *asd_ha,
+                              struct asd_flash_dir *flash_dir)
+{
+        u32 v;
+        for (v = 0; v < FLASH_SIZE; v += FLASH_NEXT_ENTRY_OFFS) {
+                asd_read_flash_seg(asd_ha, flash_dir, v,
+                                   sizeof(FLASH_DIR_COOKIE)-1);
+                if (memcmp(flash_dir->cookie, FLASH_DIR_COOKIE,
+                           sizeof(FLASH_DIR_COOKIE)-1) == 0) {
+                        asd_ha->hw_prof.flash.dir_offs = v;
+                        asd_read_flash_seg(asd_ha, flash_dir, v,
+                                           sizeof(*flash_dir));
+                        return 1;
+                }
+        }
+        return 0;
+}
+
+static int asd_flash_getid(struct asd_ha_struct *asd_ha)
+{
+        int err = 0;
+        u32 reg;
+
+        reg = asd_read_reg_dword(asd_ha, EXSICNFGR);
+
+        if (!(reg & FLASHEX)) {
+                ASD_DPRINTK("flash doesn't exist\n");
+                return -ENOENT;
+        }
+        if (pci_read_config_dword(asd_ha->pcidev, PCI_CONF_FLSH_BAR,
+                                  &asd_ha->hw_prof.flash.bar)) {
+                asd_printk("couldn't read PCI_CONF_FLSH_BAR of %s\n",
+                           pci_name(asd_ha->pcidev));
+                return -ENOENT;
+        }
+        asd_ha->hw_prof.flash.present = 1;
+        asd_ha->hw_prof.flash.wide = reg & FLASHW ? 1 : 0;
+        err = asd_reset_flash(asd_ha);
+        if (err) {
+                ASD_DPRINTK("couldn't reset flash(%d)\n", err);
+                return err;
+        }
+        return 0;
+}
+
+static u16 asd_calc_flash_chksum(u16 *p, int size)
+{
+        u16 chksum = 0;
+
+        while (size-- > 0)
+                chksum += *p++;
+
+        return chksum;
+}
+
+
+static int asd_find_flash_de(struct asd_flash_dir *flash_dir, u32 entry_type,
+                             u32 *offs, u32 *size)
+{
+        int i;
+        struct asd_flash_de *de;
+
+        for (i = 0; i < FLASH_MAX_DIR_ENTRIES; i++) {
+                u32 type = le32_to_cpu(flash_dir->dir_entry[i].type);
+
+                type &= FLASH_DE_TYPE_MASK;
+                if (type == entry_type)
+                        break;
+        }
+        if (i >= FLASH_MAX_DIR_ENTRIES)
+                return -ENOENT;
+        de = &flash_dir->dir_entry[i];
+        *offs = le32_to_cpu(de->offs);
+        *size = le32_to_cpu(de->pad_size);
+        return 0;
+}
+
+static int asd_validate_ms(struct asd_manuf_sec *ms)
+{
+        if (ms->sig[0] != 'S' || ms->sig[1] != 'M') {
+                ASD_DPRINTK("manuf sec: no valid sig(%c%c)\n",
+                            ms->sig[0], ms->sig[1]);
+                return -ENOENT;
+        }
+        if (ms->maj != 0) {
+                asd_printk("unsupported manuf. sector. major version:%x\n",
+                           ms->maj);
+                return -ENOENT;
+        }
+        ms->offs_next = le16_to_cpu((__force __le16) ms->offs_next);
+        ms->chksum = le16_to_cpu((__force __le16) ms->chksum);
+        ms->size = le16_to_cpu((__force __le16) ms->size);
+
+        if (asd_calc_flash_chksum((u16 *)ms, ms->size/2)) {
+                asd_printk("failed manuf sector checksum\n");
+        }
+
+        return 0;
+}
+
+static int asd_ms_get_sas_addr(struct asd_ha_struct *asd_ha,
+                               struct asd_manuf_sec *ms)
+{
+        memcpy(asd_ha->hw_prof.sas_addr, ms->sas_addr, SAS_ADDR_SIZE);
+        return 0;
+}
+
+static int asd_ms_get_pcba_sn(struct asd_ha_struct *asd_ha,
+                              struct asd_manuf_sec *ms)
+{
+        memcpy(asd_ha->hw_prof.pcba_sn, ms->pcba_sn, ASD_PCBA_SN_SIZE);
+        asd_ha->hw_prof.pcba_sn[ASD_PCBA_SN_SIZE] = '\0';
+        return 0;
+}
+
+/**
+ * asd_find_ll_by_id - find a linked list entry by its id
+ * @start: void pointer to the first element in the linked list
+ * @id0: the first byte of the id  (offs 0)
+ * @id1: the second byte of the id (offs 1)
+ *
+ * @start has to be the _base_ element start, since the
+ * linked list entries's offset is from this pointer.
+ * Some linked list entries use only the first id, in which case
+ * you can pass 0xFF for the second.
+ */
+static void *asd_find_ll_by_id(void * const start, const u8 id0, const u8 id1)
+{
+        struct asd_ll_el *el = start;
+
+        do {
+                switch (id1) {
+                default:
+                        if (el->id1 == id1)
+                case 0xFF:
+                                if (el->id0 == id0)
+                                        return el;
+                }
+                el = start + le16_to_cpu(el->next);
+        } while (el != start);
+
+        return NULL;
+}
+
+/**
+ * asd_ms_get_phy_params - get phy parameters from the manufacturing sector
+ * @asd_ha: pointer to the host adapter structure
+ * @manuf_sec: pointer to the manufacturing sector
+ *
+ * The manufacturing sector contans also the linked list of sub-segments,
+ * since when it was read, its size was taken from the flash directory,
+ * not from the structure size.
+ *
+ * HIDDEN phys do not count in the total count.  REPORTED phys cannot
+ * be enabled but are reported and counted towards the total.
+ * ENEBLEABLE phys are enabled by default and count towards the total.
+ * The absolute total phy number is ASD_MAX_PHYS.  hw_prof->num_phys
+ * merely specifies the number of phys the host adapter decided to
+ * report.  E.g., it is possible for phys 0, 1 and 2 to be HIDDEN,
+ * phys 3, 4 and 5 to be REPORTED and phys 6 and 7 to be ENEBLEABLE.
+ * In this case ASD_MAX_PHYS is 8, hw_prof->num_phys is 5, and only 2
+ * are actually enabled (enabled by default, max number of phys
+ * enableable in this case).
+ */
+static int asd_ms_get_phy_params(struct asd_ha_struct *asd_ha,
+                                 struct asd_manuf_sec *manuf_sec)
+{
+        int i;
+        int en_phys = 0;
+        int rep_phys = 0;
+        struct asd_manuf_phy_param *phy_param;
+        struct asd_manuf_phy_param dflt_phy_param;
+
+        phy_param = asd_find_ll_by_id(manuf_sec, 'P', 'M');
+        if (!phy_param) {
+                ASD_DPRINTK("ms: no phy parameters found\n");
+                ASD_DPRINTK("ms: Creating default phy parameters\n");
+                dflt_phy_param.sig[0] = 'P';
+                dflt_phy_param.sig[1] = 'M';
+                dflt_phy_param.maj = 0;
+                dflt_phy_param.min = 2;
+                dflt_phy_param.num_phy_desc = 8;
+                dflt_phy_param.phy_desc_size = sizeof(struct asd_manuf_phy_desc);
+                for (i =0; i < ASD_MAX_PHYS; i++) {
+                        dflt_phy_param.phy_desc[i].state = 0;
+                        dflt_phy_param.phy_desc[i].phy_id = i;
+                        dflt_phy_param.phy_desc[i].phy_control_0 = 0xf6;
+                        dflt_phy_param.phy_desc[i].phy_control_1 = 0x10;
+                        dflt_phy_param.phy_desc[i].phy_control_2 = 0x43;
+                        dflt_phy_param.phy_desc[i].phy_control_3 = 0xeb;
+                }
+
+                phy_param = &dflt_phy_param;
+
+        }
+
+        if (phy_param->maj != 0) {
+                asd_printk("unsupported manuf. phy param major version:0x%x\n",
+                           phy_param->maj);
+                return -ENOENT;
+        }
+
+        ASD_DPRINTK("ms: num_phy_desc: %d\n", phy_param->num_phy_desc);
+        asd_ha->hw_prof.enabled_phys = 0;
+        for (i = 0; i < phy_param->num_phy_desc; i++) {
+                struct asd_manuf_phy_desc *pd = &phy_param->phy_desc[i];
+                switch (pd->state & 0xF) {
+                case MS_PHY_STATE_HIDDEN:
+                        ASD_DPRINTK("ms: phy%d: HIDDEN\n", i);
+                        continue;
+                case MS_PHY_STATE_REPORTED:
+                        ASD_DPRINTK("ms: phy%d: REPORTED\n", i);
+                        asd_ha->hw_prof.enabled_phys &= ~(1 << i);
+                        rep_phys++;
+                        continue;
+                case MS_PHY_STATE_ENABLEABLE:
+                        ASD_DPRINTK("ms: phy%d: ENEBLEABLE\n", i);
+                        asd_ha->hw_prof.enabled_phys |= (1 << i);
+                        en_phys++;
+                        break;
+                }
+                asd_ha->hw_prof.phy_desc[i].phy_control_0 = pd->phy_control_0;
+                asd_ha->hw_prof.phy_desc[i].phy_control_1 = pd->phy_control_1;
+                asd_ha->hw_prof.phy_desc[i].phy_control_2 = pd->phy_control_2;
+                asd_ha->hw_prof.phy_desc[i].phy_control_3 = pd->phy_control_3;
+        }
+        asd_ha->hw_prof.max_phys = rep_phys + en_phys;
+        asd_ha->hw_prof.num_phys = en_phys;
+        ASD_DPRINTK("ms: max_phys:0x%x, num_phys:0x%x\n",
+                    asd_ha->hw_prof.max_phys, asd_ha->hw_prof.num_phys);
+        ASD_DPRINTK("ms: enabled_phys:0x%x\n", asd_ha->hw_prof.enabled_phys);
+        return 0;
+}
+
+static int asd_ms_get_connector_map(struct asd_ha_struct *asd_ha,
+                                    struct asd_manuf_sec *manuf_sec)
+{
+        struct asd_ms_conn_map *cm;
+
+        cm = asd_find_ll_by_id(manuf_sec, 'M', 'C');
+        if (!cm) {
+                ASD_DPRINTK("ms: no connector map found\n");
+                return 0;
+        }
+
+        if (cm->maj != 0) {
+                ASD_DPRINTK("ms: unsupported: connector map major version 0x%x"
+                            "\n", cm->maj);
+                return -ENOENT;
+        }
+
+        /* XXX */
+
+        return 0;
+}
+
+
+/**
+ * asd_process_ms - find and extract information from the manufacturing sector
+ * @asd_ha: pointer to the host adapter structure
+ * @flash_dir: pointer to the flash directory
+ */
+static int asd_process_ms(struct asd_ha_struct *asd_ha,
+                          struct asd_flash_dir *flash_dir)
+{
+        int err;
+        struct asd_manuf_sec *manuf_sec;
+        u32 offs, size;
+
+        err = asd_find_flash_de(flash_dir, FLASH_DE_MS, &offs, &size);
+        if (err) {
+                ASD_DPRINTK("Couldn't find the manuf. sector\n");
+                goto out;
+        }
+
+        if (size == 0)
+                goto out;
+
+        err = -ENOMEM;
+        manuf_sec = kmalloc(size, GFP_KERNEL);
+        if (!manuf_sec) {
+                ASD_DPRINTK("no mem for manuf sector\n");
+                goto out;
+        }
+
+        err = asd_read_flash_seg(asd_ha, (void *)manuf_sec, offs, size);
+        if (err) {
+                ASD_DPRINTK("couldn't read manuf sector at 0x%x, size 0x%x\n",
+                            offs, size);
+                goto out2;
+        }
+
+        err = asd_validate_ms(manuf_sec);
+        if (err) {
+                ASD_DPRINTK("couldn't validate manuf sector\n");
+                goto out2;
+        }
+
+        err = asd_ms_get_sas_addr(asd_ha, manuf_sec);
+        if (err) {
+                ASD_DPRINTK("couldn't read the SAS_ADDR\n");
+                goto out2;
+        }
+        ASD_DPRINTK("manuf sect SAS_ADDR %llx\n",
+                    SAS_ADDR(asd_ha->hw_prof.sas_addr));
+
+        err = asd_ms_get_pcba_sn(asd_ha, manuf_sec);
+        if (err) {
+                ASD_DPRINTK("couldn't read the PCBA SN\n");
+                goto out2;
+        }
+        ASD_DPRINTK("manuf sect PCBA SN %s\n", asd_ha->hw_prof.pcba_sn);
+
+        err = asd_ms_get_phy_params(asd_ha, manuf_sec);
+        if (err) {
+                ASD_DPRINTK("ms: couldn't get phy parameters\n");
+                goto out2;
+        }
+
+        err = asd_ms_get_connector_map(asd_ha, manuf_sec);
+        if (err) {
+                ASD_DPRINTK("ms: couldn't get connector map\n");
+                goto out2;
+        }
+
+out2:
+        kfree(manuf_sec);
+out:
+        return err;
+}
+
+static int asd_process_ctrla_phy_settings(struct asd_ha_struct *asd_ha,
+                                          struct asd_ctrla_phy_settings *ps)
+{
+        int i;
+        for (i = 0; i < ps->num_phys; i++) {
+                struct asd_ctrla_phy_entry *pe = &ps->phy_ent[i];
+
+                if (!PHY_ENABLED(asd_ha, i))
+                        continue;
+                if (*(u64 *)pe->sas_addr == 0) {
+                        asd_ha->hw_prof.enabled_phys &= ~(1 << i);
+                        continue;
+                }
+                /* This is the SAS address which should be sent in IDENTIFY. */
+                memcpy(asd_ha->hw_prof.phy_desc[i].sas_addr, pe->sas_addr,
+                       SAS_ADDR_SIZE);
+                asd_ha->hw_prof.phy_desc[i].max_sas_lrate =
+                        (pe->sas_link_rates & 0xF0) >> 4;
+                asd_ha->hw_prof.phy_desc[i].min_sas_lrate =
+                        (pe->sas_link_rates & 0x0F);
+                asd_ha->hw_prof.phy_desc[i].max_sata_lrate =
+                        (pe->sata_link_rates & 0xF0) >> 4;
+                asd_ha->hw_prof.phy_desc[i].min_sata_lrate =
+                        (pe->sata_link_rates & 0x0F);
+                asd_ha->hw_prof.phy_desc[i].flags = pe->flags;
+                ASD_DPRINTK("ctrla: phy%d: sas_addr: %llx, sas rate:0x%x-0x%x,"
+                            " sata rate:0x%x-0x%x, flags:0x%x\n",
+                            i,
+                            SAS_ADDR(asd_ha->hw_prof.phy_desc[i].sas_addr),
+                            asd_ha->hw_prof.phy_desc[i].max_sas_lrate,
+                            asd_ha->hw_prof.phy_desc[i].min_sas_lrate,
+                            asd_ha->hw_prof.phy_desc[i].max_sata_lrate,
+                            asd_ha->hw_prof.phy_desc[i].min_sata_lrate,
+                            asd_ha->hw_prof.phy_desc[i].flags);
+        }
+
+        return 0;
+}
+
+/**
+ * asd_process_ctrl_a_user - process CTRL-A user settings
+ * @asd_ha: pointer to the host adapter structure
+ * @flash_dir: pointer to the flash directory
+ */
+static int asd_process_ctrl_a_user(struct asd_ha_struct *asd_ha,
+                                   struct asd_flash_dir *flash_dir)
+{
+        int err, i;
+        u32 offs, size;
+        struct asd_ll_el *el;
+        struct asd_ctrla_phy_settings *ps;
+        struct asd_ctrla_phy_settings dflt_ps;
+
+        err = asd_find_flash_de(flash_dir, FLASH_DE_CTRL_A_USER, &offs, &size);
+        if (err) {
+                ASD_DPRINTK("couldn't find CTRL-A user settings section\n");
+                ASD_DPRINTK("Creating default CTRL-A user settings section\n");
+
+                dflt_ps.id0 = 'h';
+                dflt_ps.num_phys = 8;
+                for (i =0; i < ASD_MAX_PHYS; i++) {
+                        memcpy(dflt_ps.phy_ent[i].sas_addr,
+                               asd_ha->hw_prof.sas_addr, SAS_ADDR_SIZE);
+                        dflt_ps.phy_ent[i].sas_link_rates = 0x98;
+                        dflt_ps.phy_ent[i].flags = 0x0;
+                        dflt_ps.phy_ent[i].sata_link_rates = 0x0;
+                }
+
+                size = sizeof(struct asd_ctrla_phy_settings);
+                ps = &dflt_ps;
+        }
+
+        if (size == 0)
+                goto out;
+
+        err = -ENOMEM;
+        el = kmalloc(size, GFP_KERNEL);
+        if (!el) {
+                ASD_DPRINTK("no mem for ctrla user settings section\n");
+                goto out;
+        }
+
+        err = asd_read_flash_seg(asd_ha, (void *)el, offs, size);
+        if (err) {
+                ASD_DPRINTK("couldn't read ctrla phy settings section\n");
+                goto out2;
+        }
+
+        err = -ENOENT;
+        ps = asd_find_ll_by_id(el, 'h', 0xFF);
+        if (!ps) {
+                ASD_DPRINTK("couldn't find ctrla phy settings struct\n");
+                goto out2;
+        }
+
+        err = asd_process_ctrla_phy_settings(asd_ha, ps);
+        if (err) {
+                ASD_DPRINTK("couldn't process ctrla phy settings\n");
+                goto out2;
+        }
+out2:
+        kfree(el);
+out:
+        return err;
+}
+
+/**
+ * asd_read_flash - read flash memory
+ * @asd_ha: pointer to the host adapter structure
+ */
+int asd_read_flash(struct asd_ha_struct *asd_ha)
+{
+        int err;
+        struct asd_flash_dir *flash_dir;
+
+        err = asd_flash_getid(asd_ha);
+        if (err)
+                return err;
+
+        flash_dir = kmalloc(sizeof(*flash_dir), GFP_KERNEL);
+        if (!flash_dir)
+                return -ENOMEM;
+
+        err = -ENOENT;
+        if (!asd_find_flash_dir(asd_ha, flash_dir)) {
+                ASD_DPRINTK("couldn't find flash directory\n");
+                goto out;
+        }
+
+        if (le32_to_cpu(flash_dir->rev) != 2) {
+                asd_printk("unsupported flash dir version:0x%x\n",
+                           le32_to_cpu(flash_dir->rev));
+                goto out;
+        }
+
+        err = asd_process_ms(asd_ha, flash_dir);
+        if (err) {
+                ASD_DPRINTK("couldn't process manuf sector settings\n");
+                goto out;
+        }
+
+        err = asd_process_ctrl_a_user(asd_ha, flash_dir);
+        if (err) {
+                ASD_DPRINTK("couldn't process CTRL-A user settings\n");
+                goto out;
+        }
+
+out:
+        kfree(flash_dir);
+        return err;
+}