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authoradam radford <aradford@gmail.com>2010-12-21 16:34:31 -0500
committerJames Bottomley <James.Bottomley@suse.de>2010-12-23 00:26:53 -0500
commit9c915a8c99bce637226aa09cb05fc18486b229cb (patch)
tree7bc2330661366db6407548a12366f7340f1b31e9 /drivers/scsi/megaraid
parentcd50ba8ede5cd3c4606a8e5d163913da5ff36ad7 (diff)
[SCSI] megaraid_sas: Add 9565/9285 specific code
This patch adds MegaRAID 9265/9285 (Device id 0x5b) specific code Signed-off-by: Adam Radford <aradford@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/megaraid')
-rw-r--r--drivers/scsi/megaraid/Makefile3
-rw-r--r--drivers/scsi/megaraid/megaraid_sas.h38
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_base.c362
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fp.c516
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.c2248
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.h695
6 files changed, 3751 insertions, 111 deletions
diff --git a/drivers/scsi/megaraid/Makefile b/drivers/scsi/megaraid/Makefile
index 6613a2ceea03..5826ed509e3e 100644
--- a/drivers/scsi/megaraid/Makefile
+++ b/drivers/scsi/megaraid/Makefile
@@ -1,4 +1,5 @@
1obj-$(CONFIG_MEGARAID_MM) += megaraid_mm.o 1obj-$(CONFIG_MEGARAID_MM) += megaraid_mm.o
2obj-$(CONFIG_MEGARAID_MAILBOX) += megaraid_mbox.o 2obj-$(CONFIG_MEGARAID_MAILBOX) += megaraid_mbox.o
3obj-$(CONFIG_MEGARAID_SAS) += megaraid_sas.o 3obj-$(CONFIG_MEGARAID_SAS) += megaraid_sas.o
4megaraid_sas-objs := megaraid_sas_base.o 4megaraid_sas-objs := megaraid_sas_base.o megaraid_sas_fusion.o \
5 megaraid_sas_fp.o
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index a0b8ee1a5d2d..1b5e375732c0 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -33,9 +33,9 @@
33/* 33/*
34 * MegaRAID SAS Driver meta data 34 * MegaRAID SAS Driver meta data
35 */ 35 */
36#define MEGASAS_VERSION "00.00.04.31-rc1" 36#define MEGASAS_VERSION "00.00.05.29-rc1"
37#define MEGASAS_RELDATE "May 3, 2010" 37#define MEGASAS_RELDATE "Dec. 7, 2010"
38#define MEGASAS_EXT_VERSION "Mon. May 3, 11:41:51 PST 2010" 38#define MEGASAS_EXT_VERSION "Tue. Dec. 7 17:00:00 PDT 2010"
39 39
40/* 40/*
41 * Device IDs 41 * Device IDs
@@ -47,6 +47,7 @@
47#define PCI_DEVICE_ID_LSI_SAS0079GEN2 0x0079 47#define PCI_DEVICE_ID_LSI_SAS0079GEN2 0x0079
48#define PCI_DEVICE_ID_LSI_SAS0073SKINNY 0x0073 48#define PCI_DEVICE_ID_LSI_SAS0073SKINNY 0x0073
49#define PCI_DEVICE_ID_LSI_SAS0071SKINNY 0x0071 49#define PCI_DEVICE_ID_LSI_SAS0071SKINNY 0x0071
50#define PCI_DEVICE_ID_LSI_FUSION 0x005b
50 51
51/* 52/*
52 * ===================================== 53 * =====================================
@@ -436,7 +437,6 @@ struct megasas_ctrl_prop {
436 * Add properties that can be controlled by 437 * Add properties that can be controlled by
437 * a bit in the following structure. 438 * a bit in the following structure.
438 */ 439 */
439
440 struct { 440 struct {
441 u32 copyBackDisabled : 1; 441 u32 copyBackDisabled : 1;
442 u32 SMARTerEnabled : 1; 442 u32 SMARTerEnabled : 1;
@@ -716,6 +716,7 @@ struct megasas_ctrl_info {
716#define MEGASAS_DEFAULT_INIT_ID -1 716#define MEGASAS_DEFAULT_INIT_ID -1
717#define MEGASAS_MAX_LUN 8 717#define MEGASAS_MAX_LUN 8
718#define MEGASAS_MAX_LD 64 718#define MEGASAS_MAX_LD 64
719#define MEGASAS_DEFAULT_CMD_PER_LUN 128
719#define MEGASAS_MAX_PD (MEGASAS_MAX_PD_CHANNELS * \ 720#define MEGASAS_MAX_PD (MEGASAS_MAX_PD_CHANNELS * \
720 MEGASAS_MAX_DEV_PER_CHANNEL) 721 MEGASAS_MAX_DEV_PER_CHANNEL)
721#define MEGASAS_MAX_LD_IDS (MEGASAS_MAX_LD_CHANNELS * \ 722#define MEGASAS_MAX_LD_IDS (MEGASAS_MAX_LD_CHANNELS * \
@@ -784,7 +785,10 @@ struct megasas_ctrl_info {
784*/ 785*/
785 786
786struct megasas_register_set { 787struct megasas_register_set {
787 u32 reserved_0[4]; /*0000h*/ 788 u32 doorbell; /*0000h*/
789 u32 fusion_seq_offset; /*0004h*/
790 u32 fusion_host_diag; /*0008h*/
791 u32 reserved_01; /*000Ch*/
788 792
789 u32 inbound_msg_0; /*0010h*/ 793 u32 inbound_msg_0; /*0010h*/
790 u32 inbound_msg_1; /*0014h*/ 794 u32 inbound_msg_1; /*0014h*/
@@ -804,15 +808,18 @@ struct megasas_register_set {
804 u32 inbound_queue_port; /*0040h*/ 808 u32 inbound_queue_port; /*0040h*/
805 u32 outbound_queue_port; /*0044h*/ 809 u32 outbound_queue_port; /*0044h*/
806 810
807 u32 reserved_2[22]; /*0048h*/ 811 u32 reserved_2[9]; /*0048h*/
812 u32 reply_post_host_index; /*006Ch*/
813 u32 reserved_2_2[12]; /*0070h*/
808 814
809 u32 outbound_doorbell_clear; /*00A0h*/ 815 u32 outbound_doorbell_clear; /*00A0h*/
810 816
811 u32 reserved_3[3]; /*00A4h*/ 817 u32 reserved_3[3]; /*00A4h*/
812 818
813 u32 outbound_scratch_pad ; /*00B0h*/ 819 u32 outbound_scratch_pad ; /*00B0h*/
820 u32 outbound_scratch_pad_2; /*00B4h*/
814 821
815 u32 reserved_4[3]; /*00B4h*/ 822 u32 reserved_4[2]; /*00B8h*/
816 823
817 u32 inbound_low_queue_port ; /*00C0h*/ 824 u32 inbound_low_queue_port ; /*00C0h*/
818 825
@@ -1287,6 +1294,9 @@ struct megasas_instance {
1287 1294
1288 u16 max_num_sge; 1295 u16 max_num_sge;
1289 u16 max_fw_cmds; 1296 u16 max_fw_cmds;
1297 /* For Fusion its num IOCTL cmds, for others MFI based its
1298 max_fw_cmds */
1299 u16 max_mfi_cmds;
1290 u32 max_sectors_per_req; 1300 u32 max_sectors_per_req;
1291 struct megasas_aen_event *ev; 1301 struct megasas_aen_event *ev;
1292 1302
@@ -1336,9 +1346,15 @@ struct megasas_instance {
1336 struct timer_list io_completion_timer; 1346 struct timer_list io_completion_timer;
1337 struct list_head internal_reset_pending_q; 1347 struct list_head internal_reset_pending_q;
1338 1348
1349 /* Ptr to hba specfic information */
1350 void *ctrl_context;
1339 u8 msi_flag; 1351 u8 msi_flag;
1340 struct msix_entry msixentry; 1352 struct msix_entry msixentry;
1353 u64 map_id;
1354 struct megasas_cmd *map_update_cmd;
1341 unsigned long bar; 1355 unsigned long bar;
1356 long reset_flags;
1357 struct mutex reset_mutex;
1342}; 1358};
1343 1359
1344enum { 1360enum {
@@ -1397,7 +1413,13 @@ struct megasas_cmd {
1397 struct list_head list; 1413 struct list_head list;
1398 struct scsi_cmnd *scmd; 1414 struct scsi_cmnd *scmd;
1399 struct megasas_instance *instance; 1415 struct megasas_instance *instance;
1400 u32 frame_count; 1416 union {
1417 struct {
1418 u16 smid;
1419 u16 resvd;
1420 } context;
1421 u32 frame_count;
1422 };
1401}; 1423};
1402 1424
1403#define MAX_MGMT_ADAPTERS 1024 1425#define MAX_MGMT_ADAPTERS 1024
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 5938267e472b..5d6d07bd1cd0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -53,6 +53,7 @@
53#include <scsi/scsi_cmnd.h> 53#include <scsi/scsi_cmnd.h>
54#include <scsi/scsi_device.h> 54#include <scsi/scsi_device.h>
55#include <scsi/scsi_host.h> 55#include <scsi/scsi_host.h>
56#include "megaraid_sas_fusion.h"
56#include "megaraid_sas.h" 57#include "megaraid_sas.h"
57 58
58/* 59/*
@@ -81,7 +82,7 @@ MODULE_VERSION(MEGASAS_VERSION);
81MODULE_AUTHOR("megaraidlinux@lsi.com"); 82MODULE_AUTHOR("megaraidlinux@lsi.com");
82MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); 83MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
83 84
84static int megasas_transition_to_ready(struct megasas_instance *instance); 85int megasas_transition_to_ready(struct megasas_instance *instance);
85static int megasas_get_pd_list(struct megasas_instance *instance); 86static int megasas_get_pd_list(struct megasas_instance *instance);
86static int megasas_issue_init_mfi(struct megasas_instance *instance); 87static int megasas_issue_init_mfi(struct megasas_instance *instance);
87static int megasas_register_aen(struct megasas_instance *instance, 88static int megasas_register_aen(struct megasas_instance *instance,
@@ -109,6 +110,8 @@ static struct pci_device_id megasas_pci_table[] = {
109 /* xscale IOP, vega */ 110 /* xscale IOP, vega */
110 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, 111 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
111 /* xscale IOP */ 112 /* xscale IOP */
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
114 /* Fusion */
112 {} 115 {}
113}; 116};
114 117
@@ -122,15 +125,16 @@ static DEFINE_MUTEX(megasas_async_queue_mutex);
122static int megasas_poll_wait_aen; 125static int megasas_poll_wait_aen;
123static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); 126static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
124static u32 support_poll_for_event; 127static u32 support_poll_for_event;
125static u32 megasas_dbg_lvl; 128u32 megasas_dbg_lvl;
126static u32 support_device_change; 129static u32 support_device_change;
127 130
128/* define lock for aen poll */ 131/* define lock for aen poll */
129spinlock_t poll_aen_lock; 132spinlock_t poll_aen_lock;
130 133
131static void 134void
132megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 135megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
133 u8 alt_status); 136 u8 alt_status);
137
134static irqreturn_t megasas_isr(int irq, void *devp); 138static irqreturn_t megasas_isr(int irq, void *devp);
135static u32 139static u32
136megasas_init_adapter_mfi(struct megasas_instance *instance); 140megasas_init_adapter_mfi(struct megasas_instance *instance);
@@ -138,6 +142,23 @@ u32
138megasas_build_and_issue_cmd(struct megasas_instance *instance, 142megasas_build_and_issue_cmd(struct megasas_instance *instance,
139 struct scsi_cmnd *scmd); 143 struct scsi_cmnd *scmd);
140static void megasas_complete_cmd_dpc(unsigned long instance_addr); 144static void megasas_complete_cmd_dpc(unsigned long instance_addr);
145void
146megasas_release_fusion(struct megasas_instance *instance);
147int
148megasas_ioc_init_fusion(struct megasas_instance *instance);
149void
150megasas_free_cmds_fusion(struct megasas_instance *instance);
151u8
152megasas_get_map_info(struct megasas_instance *instance);
153int
154megasas_sync_map_info(struct megasas_instance *instance);
155int
156wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
157void megasas_reset_reply_desc(struct megasas_instance *instance);
158u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
159 struct LD_LOAD_BALANCE_INFO *lbInfo);
160int megasas_reset_fusion(struct Scsi_Host *shost);
161void megasas_fusion_ocr_wq(struct work_struct *work);
141 162
142void 163void
143megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 164megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
@@ -152,7 +173,7 @@ megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
152 * 173 *
153 * Returns a free command from the pool 174 * Returns a free command from the pool
154 */ 175 */
155static struct megasas_cmd *megasas_get_cmd(struct megasas_instance 176struct megasas_cmd *megasas_get_cmd(struct megasas_instance
156 *instance) 177 *instance)
157{ 178{
158 unsigned long flags; 179 unsigned long flags;
@@ -177,7 +198,7 @@ static struct megasas_cmd *megasas_get_cmd(struct megasas_instance
177 * @instance: Adapter soft state 198 * @instance: Adapter soft state
178 * @cmd: Command packet to be returned to free command pool 199 * @cmd: Command packet to be returned to free command pool
179 */ 200 */
180static inline void 201inline void
181megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 202megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
182{ 203{
183 unsigned long flags; 204 unsigned long flags;
@@ -185,6 +206,7 @@ megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
185 spin_lock_irqsave(&instance->cmd_pool_lock, flags); 206 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
186 207
187 cmd->scmd = NULL; 208 cmd->scmd = NULL;
209 cmd->frame_count = 0;
188 list_add_tail(&cmd->list, &instance->cmd_pool); 210 list_add_tail(&cmd->list, &instance->cmd_pool);
189 211
190 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); 212 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
@@ -796,6 +818,11 @@ static struct megasas_instance_template megasas_instance_template_gen2 = {
796* specific to gen2 (deviceid : 0x78, 0x79) controllers 818* specific to gen2 (deviceid : 0x78, 0x79) controllers
797*/ 819*/
798 820
821/*
822 * Template added for TB (Fusion)
823 */
824extern struct megasas_instance_template megasas_instance_template_fusion;
825
799/** 826/**
800 * megasas_issue_polled - Issues a polling command 827 * megasas_issue_polled - Issues a polling command
801 * @instance: Adapter soft state 828 * @instance: Adapter soft state
@@ -803,11 +830,9 @@ static struct megasas_instance_template megasas_instance_template_gen2 = {
803 * 830 *
804 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 831 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
805 */ 832 */
806static int 833int
807megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) 834megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
808{ 835{
809 int i;
810 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
811 836
812 struct megasas_header *frame_hdr = &cmd->frame->hdr; 837 struct megasas_header *frame_hdr = &cmd->frame->hdr;
813 838
@@ -817,21 +842,12 @@ megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
817 /* 842 /*
818 * Issue the frame using inbound queue port 843 * Issue the frame using inbound queue port
819 */ 844 */
820 instance->instancet->fire_cmd(instance, 845 instance->instancet->issue_dcmd(instance, cmd);
821 cmd->frame_phys_addr, 0, instance->reg_set);
822 846
823 /* 847 /*
824 * Wait for cmd_status to change 848 * Wait for cmd_status to change
825 */ 849 */
826 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) { 850 return wait_and_poll(instance, cmd);
827 rmb();
828 msleep(1);
829 }
830
831 if (frame_hdr->cmd_status == 0xff)
832 return -ETIME;
833
834 return 0;
835} 851}
836 852
837/** 853/**
@@ -849,8 +865,7 @@ megasas_issue_blocked_cmd(struct megasas_instance *instance,
849{ 865{
850 cmd->cmd_status = ENODATA; 866 cmd->cmd_status = ENODATA;
851 867
852 instance->instancet->fire_cmd(instance, 868 instance->instancet->issue_dcmd(instance, cmd);
853 cmd->frame_phys_addr, 0, instance->reg_set);
854 869
855 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); 870 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
856 871
@@ -894,8 +909,7 @@ megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
894 cmd->sync_cmd = 1; 909 cmd->sync_cmd = 1;
895 cmd->cmd_status = 0xFF; 910 cmd->cmd_status = 0xFF;
896 911
897 instance->instancet->fire_cmd(instance, 912 instance->instancet->issue_dcmd(instance, cmd);
898 cmd->frame_phys_addr, 0, instance->reg_set);
899 913
900 /* 914 /*
901 * Wait for this cmd to complete 915 * Wait for this cmd to complete
@@ -1291,7 +1305,7 @@ megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1291 * Called by megasas_queue_command to find out if the command to be queued 1305 * Called by megasas_queue_command to find out if the command to be queued
1292 * is a logical drive command 1306 * is a logical drive command
1293 */ 1307 */
1294static inline int megasas_is_ldio(struct scsi_cmnd *cmd) 1308inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1295{ 1309{
1296 if (!MEGASAS_IS_LOGICAL(cmd)) 1310 if (!MEGASAS_IS_LOGICAL(cmd))
1297 return 0; 1311 return 0;
@@ -1551,15 +1565,44 @@ static int megasas_slave_alloc(struct scsi_device *sdev)
1551 return 0; 1565 return 0;
1552} 1566}
1553 1567
1554static void megaraid_sas_kill_hba(struct megasas_instance *instance) 1568void megaraid_sas_kill_hba(struct megasas_instance *instance)
1555{ 1569{
1556 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 1570 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1557 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1571 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1558 writel(MFI_STOP_ADP, 1572 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)) {
1559 &instance->reg_set->reserved_0[0]); 1573 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1560 } else { 1574 } else {
1561 writel(MFI_STOP_ADP, 1575 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1562 &instance->reg_set->inbound_doorbell); 1576 }
1577}
1578
1579 /**
1580 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1581 * restored to max value
1582 * @instance: Adapter soft state
1583 *
1584 */
1585void
1586megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1587{
1588 unsigned long flags;
1589 if (instance->flag & MEGASAS_FW_BUSY
1590 && time_after(jiffies, instance->last_time + 5 * HZ)
1591 && atomic_read(&instance->fw_outstanding) < 17) {
1592
1593 spin_lock_irqsave(instance->host->host_lock, flags);
1594 instance->flag &= ~MEGASAS_FW_BUSY;
1595 if ((instance->pdev->device ==
1596 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1597 (instance->pdev->device ==
1598 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1599 instance->host->can_queue =
1600 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1601 } else
1602 instance->host->can_queue =
1603 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1604
1605 spin_unlock_irqrestore(instance->host->host_lock, flags);
1563 } 1606 }
1564} 1607}
1565 1608
@@ -1613,24 +1656,7 @@ static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1613 /* 1656 /*
1614 * Check if we can restore can_queue 1657 * Check if we can restore can_queue
1615 */ 1658 */
1616 if (instance->flag & MEGASAS_FW_BUSY 1659 megasas_check_and_restore_queue_depth(instance);
1617 && time_after(jiffies, instance->last_time + 5 * HZ)
1618 && atomic_read(&instance->fw_outstanding) < 17) {
1619
1620 spin_lock_irqsave(instance->host->host_lock, flags);
1621 instance->flag &= ~MEGASAS_FW_BUSY;
1622 if ((instance->pdev->device ==
1623 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1624 (instance->pdev->device ==
1625 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1626 instance->host->can_queue =
1627 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1628 } else
1629 instance->host->can_queue =
1630 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1631
1632 spin_unlock_irqrestore(instance->host->host_lock, flags);
1633 }
1634} 1660}
1635 1661
1636static void 1662static void
@@ -1808,7 +1834,7 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1808 (instance->pdev->device == 1834 (instance->pdev->device ==
1809 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 1835 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1810 writel(MFI_STOP_ADP, 1836 writel(MFI_STOP_ADP,
1811 &instance->reg_set->reserved_0[0]); 1837 &instance->reg_set->doorbell);
1812 } else { 1838 } else {
1813 writel(MFI_STOP_ADP, 1839 writel(MFI_STOP_ADP,
1814 &instance->reg_set->inbound_doorbell); 1840 &instance->reg_set->inbound_doorbell);
@@ -1912,11 +1938,16 @@ static int megasas_reset_device(struct scsi_cmnd *scmd)
1912static int megasas_reset_bus_host(struct scsi_cmnd *scmd) 1938static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1913{ 1939{
1914 int ret; 1940 int ret;
1941 struct megasas_instance *instance;
1942 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1915 1943
1916 /* 1944 /*
1917 * First wait for all commands to complete 1945 * First wait for all commands to complete
1918 */ 1946 */
1919 ret = megasas_generic_reset(scmd); 1947 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
1948 ret = megasas_reset_fusion(scmd->device->host);
1949 else
1950 ret = megasas_generic_reset(scmd);
1920 1951
1921 return ret; 1952 return ret;
1922} 1953}
@@ -2086,13 +2117,14 @@ megasas_complete_abort(struct megasas_instance *instance,
2086 * an alternate status (as in the case of aborted 2117 * an alternate status (as in the case of aborted
2087 * commands) 2118 * commands)
2088 */ 2119 */
2089static void 2120void
2090megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, 2121megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2091 u8 alt_status) 2122 u8 alt_status)
2092{ 2123{
2093 int exception = 0; 2124 int exception = 0;
2094 struct megasas_header *hdr = &cmd->frame->hdr; 2125 struct megasas_header *hdr = &cmd->frame->hdr;
2095 unsigned long flags; 2126 unsigned long flags;
2127 struct fusion_context *fusion = instance->ctrl_context;
2096 2128
2097 /* flag for the retry reset */ 2129 /* flag for the retry reset */
2098 cmd->retry_for_fw_reset = 0; 2130 cmd->retry_for_fw_reset = 0;
@@ -2185,6 +2217,37 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2185 case MFI_CMD_SMP: 2217 case MFI_CMD_SMP:
2186 case MFI_CMD_STP: 2218 case MFI_CMD_STP:
2187 case MFI_CMD_DCMD: 2219 case MFI_CMD_DCMD:
2220 /* Check for LD map update */
2221 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2222 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2223 spin_lock_irqsave(instance->host->host_lock, flags);
2224 if (cmd->frame->hdr.cmd_status != 0) {
2225 if (cmd->frame->hdr.cmd_status !=
2226 MFI_STAT_NOT_FOUND)
2227 printk(KERN_WARNING "megasas: map sync"
2228 "failed, status = 0x%x.\n",
2229 cmd->frame->hdr.cmd_status);
2230 else {
2231 megasas_return_cmd(instance, cmd);
2232 spin_unlock_irqrestore(
2233 instance->host->host_lock,
2234 flags);
2235 break;
2236 }
2237 } else
2238 instance->map_id++;
2239 megasas_return_cmd(instance, cmd);
2240 if (MR_ValidateMapInfo(
2241 fusion->ld_map[(instance->map_id & 1)],
2242 fusion->load_balance_info))
2243 fusion->fast_path_io = 1;
2244 else
2245 fusion->fast_path_io = 0;
2246 megasas_sync_map_info(instance);
2247 spin_unlock_irqrestore(instance->host->host_lock,
2248 flags);
2249 break;
2250 }
2188 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || 2251 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2189 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { 2252 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2190 spin_lock_irqsave(&poll_aen_lock, flags); 2253 spin_lock_irqsave(&poll_aen_lock, flags);
@@ -2523,7 +2586,7 @@ static irqreturn_t megasas_isr(int irq, void *devp)
2523 * states, driver must take steps to bring it to ready state. Otherwise, it 2586 * states, driver must take steps to bring it to ready state. Otherwise, it
2524 * has to wait for the ready state. 2587 * has to wait for the ready state.
2525 */ 2588 */
2526static int 2589int
2527megasas_transition_to_ready(struct megasas_instance* instance) 2590megasas_transition_to_ready(struct megasas_instance* instance)
2528{ 2591{
2529 int i; 2592 int i;
@@ -2557,11 +2620,12 @@ megasas_transition_to_ready(struct megasas_instance* instance)
2557 if ((instance->pdev->device == 2620 if ((instance->pdev->device ==
2558 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2621 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2559 (instance->pdev->device == 2622 (instance->pdev->device ==
2560 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2623 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2561 2624 (instance->pdev->device ==
2625 PCI_DEVICE_ID_LSI_FUSION)) {
2562 writel( 2626 writel(
2563 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2627 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2564 &instance->reg_set->reserved_0[0]); 2628 &instance->reg_set->doorbell);
2565 } else { 2629 } else {
2566 writel( 2630 writel(
2567 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, 2631 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
@@ -2574,11 +2638,13 @@ megasas_transition_to_ready(struct megasas_instance* instance)
2574 2638
2575 case MFI_STATE_BOOT_MESSAGE_PENDING: 2639 case MFI_STATE_BOOT_MESSAGE_PENDING:
2576 if ((instance->pdev->device == 2640 if ((instance->pdev->device ==
2577 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2641 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2578 (instance->pdev->device == 2642 (instance->pdev->device ==
2579 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2643 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2644 (instance->pdev->device ==
2645 PCI_DEVICE_ID_LSI_FUSION)) {
2580 writel(MFI_INIT_HOTPLUG, 2646 writel(MFI_INIT_HOTPLUG,
2581 &instance->reg_set->reserved_0[0]); 2647 &instance->reg_set->doorbell);
2582 } else 2648 } else
2583 writel(MFI_INIT_HOTPLUG, 2649 writel(MFI_INIT_HOTPLUG,
2584 &instance->reg_set->inbound_doorbell); 2650 &instance->reg_set->inbound_doorbell);
@@ -2595,9 +2661,23 @@ megasas_transition_to_ready(struct megasas_instance* instance)
2595 if ((instance->pdev->device == 2661 if ((instance->pdev->device ==
2596 PCI_DEVICE_ID_LSI_SAS0073SKINNY) || 2662 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2597 (instance->pdev->device == 2663 (instance->pdev->device ==
2598 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { 2664 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2665 (instance->pdev->device
2666 == PCI_DEVICE_ID_LSI_FUSION)) {
2599 writel(MFI_RESET_FLAGS, 2667 writel(MFI_RESET_FLAGS,
2600 &instance->reg_set->reserved_0[0]); 2668 &instance->reg_set->doorbell);
2669 if (instance->pdev->device ==
2670 PCI_DEVICE_ID_LSI_FUSION) {
2671 for (i = 0; i < (10 * 1000); i += 20) {
2672 if (readl(
2673 &instance->
2674 reg_set->
2675 doorbell) & 1)
2676 msleep(20);
2677 else
2678 break;
2679 }
2680 }
2601 } else 2681 } else
2602 writel(MFI_RESET_FLAGS, 2682 writel(MFI_RESET_FLAGS,
2603 &instance->reg_set->inbound_doorbell); 2683 &instance->reg_set->inbound_doorbell);
@@ -2681,7 +2761,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
2681static void megasas_teardown_frame_pool(struct megasas_instance *instance) 2761static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2682{ 2762{
2683 int i; 2763 int i;
2684 u32 max_cmd = instance->max_fw_cmds; 2764 u32 max_cmd = instance->max_mfi_cmds;
2685 struct megasas_cmd *cmd; 2765 struct megasas_cmd *cmd;
2686 2766
2687 if (!instance->frame_dma_pool) 2767 if (!instance->frame_dma_pool)
@@ -2732,7 +2812,7 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
2732 u32 frame_count; 2812 u32 frame_count;
2733 struct megasas_cmd *cmd; 2813 struct megasas_cmd *cmd;
2734 2814
2735 max_cmd = instance->max_fw_cmds; 2815 max_cmd = instance->max_mfi_cmds;
2736 2816
2737 /* 2817 /*
2738 * Size of our frame is 64 bytes for MFI frame, followed by max SG 2818 * Size of our frame is 64 bytes for MFI frame, followed by max SG
@@ -2819,14 +2899,15 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
2819 * megasas_free_cmds - Free all the cmds in the free cmd pool 2899 * megasas_free_cmds - Free all the cmds in the free cmd pool
2820 * @instance: Adapter soft state 2900 * @instance: Adapter soft state
2821 */ 2901 */
2822static void megasas_free_cmds(struct megasas_instance *instance) 2902void megasas_free_cmds(struct megasas_instance *instance)
2823{ 2903{
2824 int i; 2904 int i;
2825 /* First free the MFI frame pool */ 2905 /* First free the MFI frame pool */
2826 megasas_teardown_frame_pool(instance); 2906 megasas_teardown_frame_pool(instance);
2827 2907
2828 /* Free all the commands in the cmd_list */ 2908 /* Free all the commands in the cmd_list */
2829 for (i = 0; i < instance->max_fw_cmds; i++) 2909 for (i = 0; i < instance->max_mfi_cmds; i++)
2910
2830 kfree(instance->cmd_list[i]); 2911 kfree(instance->cmd_list[i]);
2831 2912
2832 /* Free the cmd_list buffer itself */ 2913 /* Free the cmd_list buffer itself */
@@ -2854,14 +2935,14 @@ static void megasas_free_cmds(struct megasas_instance *instance)
2854 * This array is used only to look up the megasas_cmd given the context. The 2935 * This array is used only to look up the megasas_cmd given the context. The
2855 * free commands themselves are maintained in a linked list called cmd_pool. 2936 * free commands themselves are maintained in a linked list called cmd_pool.
2856 */ 2937 */
2857static int megasas_alloc_cmds(struct megasas_instance *instance) 2938int megasas_alloc_cmds(struct megasas_instance *instance)
2858{ 2939{
2859 int i; 2940 int i;
2860 int j; 2941 int j;
2861 u32 max_cmd; 2942 u32 max_cmd;
2862 struct megasas_cmd *cmd; 2943 struct megasas_cmd *cmd;
2863 2944
2864 max_cmd = instance->max_fw_cmds; 2945 max_cmd = instance->max_mfi_cmds;
2865 2946
2866 /* 2947 /*
2867 * instance->cmd_list is an array of struct megasas_cmd pointers. 2948 * instance->cmd_list is an array of struct megasas_cmd pointers.
@@ -2875,6 +2956,7 @@ static int megasas_alloc_cmds(struct megasas_instance *instance)
2875 return -ENOMEM; 2956 return -ENOMEM;
2876 } 2957 }
2877 2958
2959 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
2878 2960
2879 for (i = 0; i < max_cmd; i++) { 2961 for (i = 0; i < max_cmd; i++) {
2880 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), 2962 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
@@ -3288,6 +3370,7 @@ megasas_init_adapter_mfi(struct megasas_instance *instance)
3288 * does not exceed max cmds that the FW can support 3370 * does not exceed max cmds that the FW can support
3289 */ 3371 */
3290 instance->max_fw_cmds = instance->max_fw_cmds-1; 3372 instance->max_fw_cmds = instance->max_fw_cmds-1;
3373 instance->max_mfi_cmds = instance->max_fw_cmds;
3291 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 3374 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3292 0x10; 3375 0x10;
3293 /* 3376 /*
@@ -3381,6 +3464,9 @@ static int megasas_init_fw(struct megasas_instance *instance)
3381 reg_set = instance->reg_set; 3464 reg_set = instance->reg_set;
3382 3465
3383 switch (instance->pdev->device) { 3466 switch (instance->pdev->device) {
3467 case PCI_DEVICE_ID_LSI_FUSION:
3468 instance->instancet = &megasas_instance_template_fusion;
3469 break;
3384 case PCI_DEVICE_ID_LSI_SAS1078R: 3470 case PCI_DEVICE_ID_LSI_SAS1078R:
3385 case PCI_DEVICE_ID_LSI_SAS1078DE: 3471 case PCI_DEVICE_ID_LSI_SAS1078DE:
3386 instance->instancet = &megasas_instance_template_ppc; 3472 instance->instancet = &megasas_instance_template_ppc;
@@ -3482,9 +3568,10 @@ fail_ready_state:
3482 */ 3568 */
3483static void megasas_release_mfi(struct megasas_instance *instance) 3569static void megasas_release_mfi(struct megasas_instance *instance)
3484{ 3570{
3485 u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1); 3571 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3486 3572
3487 pci_free_consistent(instance->pdev, reply_q_sz, 3573 if (instance->reply_queue)
3574 pci_free_consistent(instance->pdev, reply_q_sz,
3488 instance->reply_queue, instance->reply_queue_h); 3575 instance->reply_queue, instance->reply_queue_h);
3489 3576
3490 megasas_free_cmds(instance); 3577 megasas_free_cmds(instance);
@@ -3678,8 +3765,7 @@ megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3678 /* 3765 /*
3679 * Issue the aen registration frame 3766 * Issue the aen registration frame
3680 */ 3767 */
3681 instance->instancet->fire_cmd(instance, 3768 instance->instancet->issue_dcmd(instance, cmd);
3682 cmd->frame_phys_addr, 0, instance->reg_set);
3683 3769
3684 return 0; 3770 return 0;
3685} 3771}
@@ -3756,12 +3842,18 @@ static int megasas_io_attach(struct megasas_instance *instance)
3756 } 3842 }
3757 3843
3758 host->max_sectors = instance->max_sectors_per_req; 3844 host->max_sectors = instance->max_sectors_per_req;
3759 host->cmd_per_lun = 128; 3845 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
3760 host->max_channel = MEGASAS_MAX_CHANNELS - 1; 3846 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3761 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; 3847 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3762 host->max_lun = MEGASAS_MAX_LUN; 3848 host->max_lun = MEGASAS_MAX_LUN;
3763 host->max_cmd_len = 16; 3849 host->max_cmd_len = 16;
3764 3850
3851 /* Fusion only supports host reset */
3852 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) {
3853 host->hostt->eh_device_reset_handler = NULL;
3854 host->hostt->eh_bus_reset_handler = NULL;
3855 }
3856
3765 /* 3857 /*
3766 * Notify the mid-layer about the new controller 3858 * Notify the mid-layer about the new controller
3767 */ 3859 */
@@ -3846,20 +3938,45 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3846 instance = (struct megasas_instance *)host->hostdata; 3938 instance = (struct megasas_instance *)host->hostdata;
3847 memset(instance, 0, sizeof(*instance)); 3939 memset(instance, 0, sizeof(*instance));
3848 atomic_set( &instance->fw_reset_no_pci_access, 0 ); 3940 atomic_set( &instance->fw_reset_no_pci_access, 0 );
3941 instance->pdev = pdev;
3849 3942
3850 instance->producer = pci_alloc_consistent(pdev, sizeof(u32), 3943 switch (instance->pdev->device) {
3851 &instance->producer_h); 3944 case PCI_DEVICE_ID_LSI_FUSION:
3852 instance->consumer = pci_alloc_consistent(pdev, sizeof(u32), 3945 {
3853 &instance->consumer_h); 3946 struct fusion_context *fusion;
3947
3948 instance->ctrl_context =
3949 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
3950 if (!instance->ctrl_context) {
3951 printk(KERN_DEBUG "megasas: Failed to allocate "
3952 "memory for Fusion context info\n");
3953 goto fail_alloc_dma_buf;
3954 }
3955 fusion = instance->ctrl_context;
3956 INIT_LIST_HEAD(&fusion->cmd_pool);
3957 spin_lock_init(&fusion->cmd_pool_lock);
3958 }
3959 break;
3960 default: /* For all other supported controllers */
3961
3962 instance->producer =
3963 pci_alloc_consistent(pdev, sizeof(u32),
3964 &instance->producer_h);
3965 instance->consumer =
3966 pci_alloc_consistent(pdev, sizeof(u32),
3967 &instance->consumer_h);
3968
3969 if (!instance->producer || !instance->consumer) {
3970 printk(KERN_DEBUG "megasas: Failed to allocate"
3971 "memory for producer, consumer\n");
3972 goto fail_alloc_dma_buf;
3973 }
3854 3974
3855 if (!instance->producer || !instance->consumer) { 3975 *instance->producer = 0;
3856 printk(KERN_DEBUG "megasas: Failed to allocate memory for " 3976 *instance->consumer = 0;
3857 "producer, consumer\n"); 3977 break;
3858 goto fail_alloc_dma_buf;
3859 } 3978 }
3860 3979
3861 *instance->producer = 0;
3862 *instance->consumer = 0;
3863 megasas_poll_wait_aen = 0; 3980 megasas_poll_wait_aen = 0;
3864 instance->flag_ieee = 0; 3981 instance->flag_ieee = 0;
3865 instance->ev = NULL; 3982 instance->ev = NULL;
@@ -3895,11 +4012,11 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3895 spin_lock_init(&poll_aen_lock); 4012 spin_lock_init(&poll_aen_lock);
3896 4013
3897 mutex_init(&instance->aen_mutex); 4014 mutex_init(&instance->aen_mutex);
4015 mutex_init(&instance->reset_mutex);
3898 4016
3899 /* 4017 /*
3900 * Initialize PCI related and misc parameters 4018 * Initialize PCI related and misc parameters
3901 */ 4019 */
3902 instance->pdev = pdev;
3903 instance->host = host; 4020 instance->host = host;
3904 instance->unique_id = pdev->bus->number << 8 | pdev->devfn; 4021 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
3905 instance->init_id = MEGASAS_DEFAULT_INIT_ID; 4022 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
@@ -3917,7 +4034,10 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3917 instance->last_time = 0; 4034 instance->last_time = 0;
3918 instance->disableOnlineCtrlReset = 1; 4035 instance->disableOnlineCtrlReset = 1;
3919 4036
3920 INIT_WORK(&instance->work_init, process_fw_state_change_wq); 4037 if (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION)
4038 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4039 else
4040 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
3921 4041
3922 /* 4042 /*
3923 * Initialize MFI Firmware 4043 * Initialize MFI Firmware
@@ -4000,6 +4120,8 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4000 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4120 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4001 instance->producer_h); 4121 instance->producer_h);
4002 megasas_release_mfi(instance); 4122 megasas_release_mfi(instance);
4123 } else {
4124 megasas_release_fusion(instance);
4003 } 4125 }
4004 if (instance->consumer) 4126 if (instance->consumer)
4005 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4127 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
@@ -4072,7 +4194,9 @@ static void megasas_shutdown_controller(struct megasas_instance *instance,
4072 4194
4073 if (instance->aen_cmd) 4195 if (instance->aen_cmd)
4074 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); 4196 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4075 4197 if (instance->map_update_cmd)
4198 megasas_issue_blocked_abort_cmd(instance,
4199 instance->map_update_cmd);
4076 dcmd = &cmd->frame->dcmd; 4200 dcmd = &cmd->frame->dcmd;
4077 4201
4078 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 4202 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
@@ -4177,9 +4301,6 @@ megasas_resume(struct pci_dev *pdev)
4177 * Initialize MFI Firmware 4301 * Initialize MFI Firmware
4178 */ 4302 */
4179 4303
4180 *instance->producer = 0;
4181 *instance->consumer = 0;
4182
4183 atomic_set(&instance->fw_outstanding, 0); 4304 atomic_set(&instance->fw_outstanding, 0);
4184 4305
4185 /* 4306 /*
@@ -4188,11 +4309,29 @@ megasas_resume(struct pci_dev *pdev)
4188 if (megasas_transition_to_ready(instance)) 4309 if (megasas_transition_to_ready(instance))
4189 goto fail_ready_state; 4310 goto fail_ready_state;
4190 4311
4191 if (megasas_issue_init_mfi(instance)) 4312 switch (instance->pdev->device) {
4192 goto fail_init_mfi; 4313 case PCI_DEVICE_ID_LSI_FUSION:
4314 {
4315 megasas_reset_reply_desc(instance);
4316 if (megasas_ioc_init_fusion(instance)) {
4317 megasas_free_cmds(instance);
4318 megasas_free_cmds_fusion(instance);
4319 goto fail_init_mfi;
4320 }
4321 if (!megasas_get_map_info(instance))
4322 megasas_sync_map_info(instance);
4323 }
4324 break;
4325 default:
4326 *instance->producer = 0;
4327 *instance->consumer = 0;
4328 if (megasas_issue_init_mfi(instance))
4329 goto fail_init_mfi;
4330 break;
4331 }
4193 4332
4194 tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, 4333 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4195 (unsigned long)instance); 4334 (unsigned long)instance);
4196 4335
4197 /* Now re-enable MSI-X */ 4336 /* Now re-enable MSI-X */
4198 if (instance->msi_flag) 4337 if (instance->msi_flag)
@@ -4261,10 +4400,12 @@ static void __devexit megasas_detach_one(struct pci_dev *pdev)
4261 int i; 4400 int i;
4262 struct Scsi_Host *host; 4401 struct Scsi_Host *host;
4263 struct megasas_instance *instance; 4402 struct megasas_instance *instance;
4403 struct fusion_context *fusion;
4264 4404
4265 instance = pci_get_drvdata(pdev); 4405 instance = pci_get_drvdata(pdev);
4266 instance->unload = 1; 4406 instance->unload = 1;
4267 host = instance->host; 4407 host = instance->host;
4408 fusion = instance->ctrl_context;
4268 4409
4269 if (poll_mode_io) 4410 if (poll_mode_io)
4270 del_timer_sync(&instance->io_completion_timer); 4411 del_timer_sync(&instance->io_completion_timer);
@@ -4306,16 +4447,32 @@ static void __devexit megasas_detach_one(struct pci_dev *pdev)
4306 if (instance->msi_flag) 4447 if (instance->msi_flag)
4307 pci_disable_msix(instance->pdev); 4448 pci_disable_msix(instance->pdev);
4308 4449
4309 megasas_release_mfi(instance); 4450 switch (instance->pdev->device) {
4310 4451 case PCI_DEVICE_ID_LSI_FUSION:
4311 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), 4452 megasas_release_fusion(instance);
4312 instance->evt_detail, instance->evt_detail_h); 4453 for (i = 0; i < 2 ; i++)
4313 4454 if (fusion->ld_map[i])
4314 pci_free_consistent(pdev, sizeof(u32), instance->producer, 4455 dma_free_coherent(&instance->pdev->dev,
4315 instance->producer_h); 4456 fusion->map_sz,
4316 4457 fusion->ld_map[i],
4317 pci_free_consistent(pdev, sizeof(u32), instance->consumer, 4458 fusion->
4318 instance->consumer_h); 4459 ld_map_phys[i]);
4460 kfree(instance->ctrl_context);
4461 break;
4462 default:
4463 megasas_release_mfi(instance);
4464 pci_free_consistent(pdev,
4465 sizeof(struct megasas_evt_detail),
4466 instance->evt_detail,
4467 instance->evt_detail_h);
4468 pci_free_consistent(pdev, sizeof(u32),
4469 instance->producer,
4470 instance->producer_h);
4471 pci_free_consistent(pdev, sizeof(u32),
4472 instance->consumer,
4473 instance->consumer_h);
4474 break;
4475 }
4319 4476
4320 scsi_host_put(host); 4477 scsi_host_put(host);
4321 4478
@@ -5079,6 +5236,7 @@ megasas_aen_polling(struct work_struct *work)
5079 break; 5236 break;
5080 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: 5237 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5081 case MR_EVT_FOREIGN_CFG_IMPORTED: 5238 case MR_EVT_FOREIGN_CFG_IMPORTED:
5239 case MR_EVT_LD_STATE_CHANGE:
5082 doscan = 1; 5240 doscan = 1;
5083 break; 5241 break;
5084 default: 5242 default:
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
new file mode 100644
index 000000000000..53fa96ae2b3e
--- /dev/null
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -0,0 +1,516 @@
1/*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2011 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_fp.c
21 *
22 * Authors: LSI Corporation
23 * Sumant Patro
24 * Varad Talamacki
25 * Manoj Jose
26 *
27 * Send feedback to: <megaraidlinux@lsi.com>
28 *
29 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
30 * ATTN: Linuxraid
31 */
32
33#include <linux/kernel.h>
34#include <linux/types.h>
35#include <linux/pci.h>
36#include <linux/list.h>
37#include <linux/moduleparam.h>
38#include <linux/module.h>
39#include <linux/spinlock.h>
40#include <linux/interrupt.h>
41#include <linux/delay.h>
42#include <linux/smp_lock.h>
43#include <linux/uio.h>
44#include <linux/uaccess.h>
45#include <linux/fs.h>
46#include <linux/compat.h>
47#include <linux/blkdev.h>
48#include <linux/poll.h>
49
50#include <scsi/scsi.h>
51#include <scsi/scsi_cmnd.h>
52#include <scsi/scsi_device.h>
53#include <scsi/scsi_host.h>
54
55#include "megaraid_sas_fusion.h"
56#include <asm/div64.h>
57
58#define ABS_DIFF(a, b) (((a) > (b)) ? ((a) - (b)) : ((b) - (a)))
59#define MR_LD_STATE_OPTIMAL 3
60#define FALSE 0
61#define TRUE 1
62
63/* Prototypes */
64void
65mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
66 struct LD_LOAD_BALANCE_INFO *lbInfo);
67
68u32 mega_mod64(u64 dividend, u32 divisor)
69{
70 u64 d;
71 u32 remainder;
72
73 if (!divisor)
74 printk(KERN_ERR "megasas : DIVISOR is zero, in div fn\n");
75 d = dividend;
76 remainder = do_div(d, divisor);
77 return remainder;
78}
79
80/**
81 * @param dividend : Dividend
82 * @param divisor : Divisor
83 *
84 * @return quotient
85 **/
86u64 mega_div64_32(uint64_t dividend, uint32_t divisor)
87{
88 u32 remainder;
89 u64 d;
90
91 if (!divisor)
92 printk(KERN_ERR "megasas : DIVISOR is zero in mod fn\n");
93
94 d = dividend;
95 remainder = do_div(d, divisor);
96
97 return d;
98}
99
100struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map)
101{
102 return &map->raidMap.ldSpanMap[ld].ldRaid;
103}
104
105static struct MR_SPAN_BLOCK_INFO *MR_LdSpanInfoGet(u32 ld,
106 struct MR_FW_RAID_MAP_ALL
107 *map)
108{
109 return &map->raidMap.ldSpanMap[ld].spanBlock[0];
110}
111
112static u8 MR_LdDataArmGet(u32 ld, u32 armIdx, struct MR_FW_RAID_MAP_ALL *map)
113{
114 return map->raidMap.ldSpanMap[ld].dataArmMap[armIdx];
115}
116
117static u16 MR_ArPdGet(u32 ar, u32 arm, struct MR_FW_RAID_MAP_ALL *map)
118{
119 return map->raidMap.arMapInfo[ar].pd[arm];
120}
121
122static u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_FW_RAID_MAP_ALL *map)
123{
124 return map->raidMap.ldSpanMap[ld].spanBlock[span].span.arrayRef;
125}
126
127static u16 MR_PdDevHandleGet(u32 pd, struct MR_FW_RAID_MAP_ALL *map)
128{
129 return map->raidMap.devHndlInfo[pd].curDevHdl;
130}
131
132u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map)
133{
134 return map->raidMap.ldSpanMap[ld].ldRaid.targetId;
135}
136
137u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map)
138{
139 return map->raidMap.ldTgtIdToLd[ldTgtId];
140}
141
142static struct MR_LD_SPAN *MR_LdSpanPtrGet(u32 ld, u32 span,
143 struct MR_FW_RAID_MAP_ALL *map)
144{
145 return &map->raidMap.ldSpanMap[ld].spanBlock[span].span;
146}
147
148/*
149 * This function will validate Map info data provided by FW
150 */
151u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
152 struct LD_LOAD_BALANCE_INFO *lbInfo)
153{
154 struct MR_FW_RAID_MAP *pFwRaidMap = &map->raidMap;
155
156 if (pFwRaidMap->totalSize !=
157 (sizeof(struct MR_FW_RAID_MAP) -sizeof(struct MR_LD_SPAN_MAP) +
158 (sizeof(struct MR_LD_SPAN_MAP) *pFwRaidMap->ldCount))) {
159 printk(KERN_ERR "megasas: map info structure size 0x%x is not matching with ld count\n",
160 (unsigned int)((sizeof(struct MR_FW_RAID_MAP) -
161 sizeof(struct MR_LD_SPAN_MAP)) +
162 (sizeof(struct MR_LD_SPAN_MAP) *
163 pFwRaidMap->ldCount)));
164 printk(KERN_ERR "megasas: span map %x, pFwRaidMap->totalSize "
165 ": %x\n", (unsigned int)sizeof(struct MR_LD_SPAN_MAP),
166 pFwRaidMap->totalSize);
167 return 0;
168 }
169
170 mr_update_load_balance_params(map, lbInfo);
171
172 return 1;
173}
174
175u32 MR_GetSpanBlock(u32 ld, u64 row, u64 *span_blk,
176 struct MR_FW_RAID_MAP_ALL *map, int *div_error)
177{
178 struct MR_SPAN_BLOCK_INFO *pSpanBlock = MR_LdSpanInfoGet(ld, map);
179 struct MR_QUAD_ELEMENT *quad;
180 struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
181 u32 span, j;
182
183 for (span = 0; span < raid->spanDepth; span++, pSpanBlock++) {
184
185 for (j = 0; j < pSpanBlock->block_span_info.noElements; j++) {
186 quad = &pSpanBlock->block_span_info.quad[j];
187
188 if (quad->diff == 0) {
189 *div_error = 1;
190 return span;
191 }
192 if (quad->logStart <= row && row <= quad->logEnd &&
193 (mega_mod64(row-quad->logStart, quad->diff)) == 0) {
194 if (span_blk != NULL) {
195 u64 blk, debugBlk;
196 blk =
197 mega_div64_32(
198 (row-quad->logStart),
199 quad->diff);
200 debugBlk = blk;
201
202 blk = (blk + quad->offsetInSpan) <<
203 raid->stripeShift;
204 *span_blk = blk;
205 }
206 return span;
207 }
208 }
209 }
210 return span;
211}
212
213/*
214******************************************************************************
215*
216* This routine calculates the arm, span and block for the specified stripe and
217* reference in stripe.
218*
219* Inputs :
220*
221* ld - Logical drive number
222* stripRow - Stripe number
223* stripRef - Reference in stripe
224*
225* Outputs :
226*
227* span - Span number
228* block - Absolute Block number in the physical disk
229*/
230u8 MR_GetPhyParams(u32 ld, u64 stripRow, u16 stripRef, u64 *pdBlock,
231 u16 *pDevHandle, struct RAID_CONTEXT *pRAID_Context,
232 struct MR_FW_RAID_MAP_ALL *map)
233{
234 struct MR_LD_RAID *raid = MR_LdRaidGet(ld, map);
235 u32 pd, arRef;
236 u8 physArm, span;
237 u64 row;
238 u8 retval = TRUE;
239 int error_code = 0;
240
241 row = mega_div64_32(stripRow, raid->rowDataSize);
242
243 if (raid->level == 6) {
244 /* logical arm within row */
245 u32 logArm = mega_mod64(stripRow, raid->rowDataSize);
246 u32 rowMod, armQ, arm;
247
248 if (raid->rowSize == 0)
249 return FALSE;
250 /* get logical row mod */
251 rowMod = mega_mod64(row, raid->rowSize);
252 armQ = raid->rowSize-1-rowMod; /* index of Q drive */
253 arm = armQ+1+logArm; /* data always logically follows Q */
254 if (arm >= raid->rowSize) /* handle wrap condition */
255 arm -= raid->rowSize;
256 physArm = (u8)arm;
257 } else {
258 if (raid->modFactor == 0)
259 return FALSE;
260 physArm = MR_LdDataArmGet(ld, mega_mod64(stripRow,
261 raid->modFactor),
262 map);
263 }
264
265 if (raid->spanDepth == 1) {
266 span = 0;
267 *pdBlock = row << raid->stripeShift;
268 } else {
269 span = (u8)MR_GetSpanBlock(ld, row, pdBlock, map, &error_code);
270 if (error_code == 1)
271 return FALSE;
272 }
273
274 /* Get the array on which this span is present */
275 arRef = MR_LdSpanArrayGet(ld, span, map);
276 pd = MR_ArPdGet(arRef, physArm, map); /* Get the pd */
277
278 if (pd != MR_PD_INVALID)
279 /* Get dev handle from Pd. */
280 *pDevHandle = MR_PdDevHandleGet(pd, map);
281 else {
282 *pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */
283 if (raid->level >= 5)
284 pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
285 else if (raid->level == 1) {
286 /* Get alternate Pd. */
287 pd = MR_ArPdGet(arRef, physArm + 1, map);
288 if (pd != MR_PD_INVALID)
289 /* Get dev handle from Pd */
290 *pDevHandle = MR_PdDevHandleGet(pd, map);
291 }
292 retval = FALSE;
293 }
294
295 *pdBlock += stripRef + MR_LdSpanPtrGet(ld, span, map)->startBlk;
296 pRAID_Context->spanArm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) |
297 physArm;
298 return retval;
299}
300
301/*
302******************************************************************************
303*
304* MR_BuildRaidContext function
305*
306* This function will initiate command processing. The start/end row and strip
307* information is calculated then the lock is acquired.
308* This function will return 0 if region lock was acquired OR return num strips
309*/
310u8
311MR_BuildRaidContext(struct IO_REQUEST_INFO *io_info,
312 struct RAID_CONTEXT *pRAID_Context,
313 struct MR_FW_RAID_MAP_ALL *map)
314{
315 struct MR_LD_RAID *raid;
316 u32 ld, stripSize, stripe_mask;
317 u64 endLba, endStrip, endRow, start_row, start_strip;
318 u64 regStart;
319 u32 regSize;
320 u8 num_strips, numRows;
321 u16 ref_in_start_stripe, ref_in_end_stripe;
322 u64 ldStartBlock;
323 u32 numBlocks, ldTgtId;
324 u8 isRead;
325 u8 retval = 0;
326
327 ldStartBlock = io_info->ldStartBlock;
328 numBlocks = io_info->numBlocks;
329 ldTgtId = io_info->ldTgtId;
330 isRead = io_info->isRead;
331
332 ld = MR_TargetIdToLdGet(ldTgtId, map);
333 raid = MR_LdRaidGet(ld, map);
334
335 stripSize = 1 << raid->stripeShift;
336 stripe_mask = stripSize-1;
337 /*
338 * calculate starting row and stripe, and number of strips and rows
339 */
340 start_strip = ldStartBlock >> raid->stripeShift;
341 ref_in_start_stripe = (u16)(ldStartBlock & stripe_mask);
342 endLba = ldStartBlock + numBlocks - 1;
343 ref_in_end_stripe = (u16)(endLba & stripe_mask);
344 endStrip = endLba >> raid->stripeShift;
345 num_strips = (u8)(endStrip - start_strip + 1); /* End strip */
346 if (raid->rowDataSize == 0)
347 return FALSE;
348 start_row = mega_div64_32(start_strip, raid->rowDataSize);
349 endRow = mega_div64_32(endStrip, raid->rowDataSize);
350 numRows = (u8)(endRow - start_row + 1);
351
352 /*
353 * calculate region info.
354 */
355
356 /* assume region is at the start of the first row */
357 regStart = start_row << raid->stripeShift;
358 /* assume this IO needs the full row - we'll adjust if not true */
359 regSize = stripSize;
360
361 /* If IO spans more than 1 strip, fp is not possible
362 FP is not possible for writes on non-0 raid levels
363 FP is not possible if LD is not capable */
364 if (num_strips > 1 || (!isRead && raid->level != 0) ||
365 !raid->capability.fpCapable) {
366 io_info->fpOkForIo = FALSE;
367 } else {
368 io_info->fpOkForIo = TRUE;
369 }
370
371 if (numRows == 1) {
372 /* single-strip IOs can always lock only the data needed */
373 if (num_strips == 1) {
374 regStart += ref_in_start_stripe;
375 regSize = numBlocks;
376 }
377 /* multi-strip IOs always need to full stripe locked */
378 } else {
379 if (start_strip == (start_row + 1) * raid->rowDataSize - 1) {
380 /* If the start strip is the last in the start row */
381 regStart += ref_in_start_stripe;
382 regSize = stripSize - ref_in_start_stripe;
383 /* initialize count to sectors from startref to end
384 of strip */
385 }
386
387 if (numRows > 2)
388 /* Add complete rows in the middle of the transfer */
389 regSize += (numRows-2) << raid->stripeShift;
390
391 /* if IO ends within first strip of last row */
392 if (endStrip == endRow*raid->rowDataSize)
393 regSize += ref_in_end_stripe+1;
394 else
395 regSize += stripSize;
396 }
397
398 pRAID_Context->timeoutValue = map->raidMap.fpPdIoTimeoutSec;
399 pRAID_Context->regLockFlags = (isRead) ? REGION_TYPE_SHARED_READ :
400 raid->regTypeReqOnWrite;
401 pRAID_Context->VirtualDiskTgtId = raid->targetId;
402 pRAID_Context->regLockRowLBA = regStart;
403 pRAID_Context->regLockLength = regSize;
404 pRAID_Context->configSeqNum = raid->seqNum;
405
406 /*Get Phy Params only if FP capable, or else leave it to MR firmware
407 to do the calculation.*/
408 if (io_info->fpOkForIo) {
409 retval = MR_GetPhyParams(ld, start_strip, ref_in_start_stripe,
410 &io_info->pdBlock,
411 &io_info->devHandle, pRAID_Context,
412 map);
413 /* If IO on an invalid Pd, then FP i snot possible */
414 if (io_info->devHandle == MR_PD_INVALID)
415 io_info->fpOkForIo = FALSE;
416 return retval;
417 } else if (isRead) {
418 uint stripIdx;
419 for (stripIdx = 0; stripIdx < num_strips; stripIdx++) {
420 if (!MR_GetPhyParams(ld, start_strip + stripIdx,
421 ref_in_start_stripe,
422 &io_info->pdBlock,
423 &io_info->devHandle,
424 pRAID_Context, map))
425 return TRUE;
426 }
427 }
428 return TRUE;
429}
430
431void
432mr_update_load_balance_params(struct MR_FW_RAID_MAP_ALL *map,
433 struct LD_LOAD_BALANCE_INFO *lbInfo)
434{
435 int ldCount;
436 u16 ld;
437 struct MR_LD_RAID *raid;
438
439 for (ldCount = 0; ldCount < MAX_LOGICAL_DRIVES; ldCount++) {
440 ld = MR_TargetIdToLdGet(ldCount, map);
441 if (ld >= MAX_LOGICAL_DRIVES) {
442 lbInfo[ldCount].loadBalanceFlag = 0;
443 continue;
444 }
445
446 raid = MR_LdRaidGet(ld, map);
447
448 /* Two drive Optimal RAID 1 */
449 if ((raid->level == 1) && (raid->rowSize == 2) &&
450 (raid->spanDepth == 1) && raid->ldState ==
451 MR_LD_STATE_OPTIMAL) {
452 u32 pd, arRef;
453
454 lbInfo[ldCount].loadBalanceFlag = 1;
455
456 /* Get the array on which this span is present */
457 arRef = MR_LdSpanArrayGet(ld, 0, map);
458
459 /* Get the Pd */
460 pd = MR_ArPdGet(arRef, 0, map);
461 /* Get dev handle from Pd */
462 lbInfo[ldCount].raid1DevHandle[0] =
463 MR_PdDevHandleGet(pd, map);
464 /* Get the Pd */
465 pd = MR_ArPdGet(arRef, 1, map);
466
467 /* Get the dev handle from Pd */
468 lbInfo[ldCount].raid1DevHandle[1] =
469 MR_PdDevHandleGet(pd, map);
470 } else
471 lbInfo[ldCount].loadBalanceFlag = 0;
472 }
473}
474
475u8 megasas_get_best_arm(struct LD_LOAD_BALANCE_INFO *lbInfo, u8 arm, u64 block,
476 u32 count)
477{
478 u16 pend0, pend1;
479 u64 diff0, diff1;
480 u8 bestArm;
481
482 /* get the pending cmds for the data and mirror arms */
483 pend0 = atomic_read(&lbInfo->scsi_pending_cmds[0]);
484 pend1 = atomic_read(&lbInfo->scsi_pending_cmds[1]);
485
486 /* Determine the disk whose head is nearer to the req. block */
487 diff0 = ABS_DIFF(block, lbInfo->last_accessed_block[0]);
488 diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[1]);
489 bestArm = (diff0 <= diff1 ? 0 : 1);
490
491 if ((bestArm == arm && pend0 > pend1 + 16) ||
492 (bestArm != arm && pend1 > pend0 + 16))
493 bestArm ^= 1;
494
495 /* Update the last accessed block on the correct pd */
496 lbInfo->last_accessed_block[bestArm] = block + count - 1;
497
498 return bestArm;
499}
500
501u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
502 struct IO_REQUEST_INFO *io_info)
503{
504 u8 arm, old_arm;
505 u16 devHandle;
506
507 old_arm = lbInfo->raid1DevHandle[0] == io_info->devHandle ? 0 : 1;
508
509 /* get best new arm */
510 arm = megasas_get_best_arm(lbInfo, old_arm, io_info->ldStartBlock,
511 io_info->numBlocks);
512 devHandle = lbInfo->raid1DevHandle[arm];
513 atomic_inc(&lbInfo->scsi_pending_cmds[arm]);
514
515 return devHandle;
516}
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
new file mode 100644
index 000000000000..c1e09d5a6196
--- /dev/null
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -0,0 +1,2248 @@
1/*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2011 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_fusion.c
21 *
22 * Authors: LSI Corporation
23 * Sumant Patro
24 * Adam Radford <linuxraid@lsi.com>
25 *
26 * Send feedback to: <megaraidlinux@lsi.com>
27 *
28 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
29 * ATTN: Linuxraid
30 */
31
32#include <linux/kernel.h>
33#include <linux/types.h>
34#include <linux/pci.h>
35#include <linux/list.h>
36#include <linux/moduleparam.h>
37#include <linux/module.h>
38#include <linux/spinlock.h>
39#include <linux/interrupt.h>
40#include <linux/delay.h>
41#include <linux/smp_lock.h>
42#include <linux/uio.h>
43#include <linux/uaccess.h>
44#include <linux/fs.h>
45#include <linux/compat.h>
46#include <linux/blkdev.h>
47#include <linux/mutex.h>
48#include <linux/poll.h>
49
50#include <scsi/scsi.h>
51#include <scsi/scsi_cmnd.h>
52#include <scsi/scsi_device.h>
53#include <scsi/scsi_host.h>
54
55#include "megaraid_sas_fusion.h"
56#include "megaraid_sas.h"
57
58extern void megasas_free_cmds(struct megasas_instance *instance);
59extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
60 *instance);
61extern void
62megasas_complete_cmd(struct megasas_instance *instance,
63 struct megasas_cmd *cmd, u8 alt_status);
64int megasas_is_ldio(struct scsi_cmnd *cmd);
65int
66wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
67
68void
69megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
70int megasas_alloc_cmds(struct megasas_instance *instance);
71int
72megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
73int
74megasas_issue_polled(struct megasas_instance *instance,
75 struct megasas_cmd *cmd);
76
77u8
78MR_BuildRaidContext(struct IO_REQUEST_INFO *io_info,
79 struct RAID_CONTEXT *pRAID_Context,
80 struct MR_FW_RAID_MAP_ALL *map);
81u16 MR_TargetIdToLdGet(u32 ldTgtId, struct MR_FW_RAID_MAP_ALL *map);
82struct MR_LD_RAID *MR_LdRaidGet(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
83
84u16 MR_GetLDTgtId(u32 ld, struct MR_FW_RAID_MAP_ALL *map);
85u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
86 struct LD_LOAD_BALANCE_INFO *lbInfo);
87u16 get_updated_dev_handle(struct LD_LOAD_BALANCE_INFO *lbInfo,
88 struct IO_REQUEST_INFO *in_info);
89int megasas_transition_to_ready(struct megasas_instance *instance);
90void megaraid_sas_kill_hba(struct megasas_instance *instance);
91
92extern u32 megasas_dbg_lvl;
93
94/**
95 * megasas_enable_intr_fusion - Enables interrupts
96 * @regs: MFI register set
97 */
98void
99megasas_enable_intr_fusion(struct megasas_register_set __iomem *regs)
100{
101 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
102
103 /* Dummy readl to force pci flush */
104 readl(&regs->outbound_intr_mask);
105}
106
107/**
108 * megasas_disable_intr_fusion - Disables interrupt
109 * @regs: MFI register set
110 */
111void
112megasas_disable_intr_fusion(struct megasas_register_set __iomem *regs)
113{
114 u32 mask = 0xFFFFFFFF;
115 u32 status;
116
117 writel(mask, &regs->outbound_intr_mask);
118 /* Dummy readl to force pci flush */
119 status = readl(&regs->outbound_intr_mask);
120}
121
122int
123megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
124{
125 u32 status;
126 /*
127 * Check if it is our interrupt
128 */
129 status = readl(&regs->outbound_intr_status);
130
131 if (status & 1) {
132 writel(status, &regs->outbound_intr_status);
133 readl(&regs->outbound_intr_status);
134 return 1;
135 }
136 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
137 return 0;
138
139 /*
140 * dummy read to flush PCI
141 */
142 readl(&regs->outbound_intr_status);
143
144 return 1;
145}
146
147/**
148 * megasas_get_cmd_fusion - Get a command from the free pool
149 * @instance: Adapter soft state
150 *
151 * Returns a free command from the pool
152 */
153struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
154 *instance)
155{
156 unsigned long flags;
157 struct fusion_context *fusion =
158 (struct fusion_context *)instance->ctrl_context;
159 struct megasas_cmd_fusion *cmd = NULL;
160
161 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
162
163 if (!list_empty(&fusion->cmd_pool)) {
164 cmd = list_entry((&fusion->cmd_pool)->next,
165 struct megasas_cmd_fusion, list);
166 list_del_init(&cmd->list);
167 } else {
168 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
169 }
170
171 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
172 return cmd;
173}
174
175/**
176 * megasas_return_cmd_fusion - Return a cmd to free command pool
177 * @instance: Adapter soft state
178 * @cmd: Command packet to be returned to free command pool
179 */
180static inline void
181megasas_return_cmd_fusion(struct megasas_instance *instance,
182 struct megasas_cmd_fusion *cmd)
183{
184 unsigned long flags;
185 struct fusion_context *fusion =
186 (struct fusion_context *)instance->ctrl_context;
187
188 spin_lock_irqsave(&fusion->cmd_pool_lock, flags);
189
190 cmd->scmd = NULL;
191 cmd->sync_cmd_idx = (u32)ULONG_MAX;
192 list_add_tail(&cmd->list, &fusion->cmd_pool);
193
194 spin_unlock_irqrestore(&fusion->cmd_pool_lock, flags);
195}
196
197/**
198 * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
199 * @instance: Adapter soft state
200 */
201static void megasas_teardown_frame_pool_fusion(
202 struct megasas_instance *instance)
203{
204 int i;
205 struct fusion_context *fusion = instance->ctrl_context;
206
207 u16 max_cmd = instance->max_fw_cmds;
208
209 struct megasas_cmd_fusion *cmd;
210
211 if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
212 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
213 "sense pool : %p\n", fusion->sg_dma_pool,
214 fusion->sense_dma_pool);
215 return;
216 }
217
218 /*
219 * Return all frames to pool
220 */
221 for (i = 0; i < max_cmd; i++) {
222
223 cmd = fusion->cmd_list[i];
224
225 if (cmd->sg_frame)
226 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
227 cmd->sg_frame_phys_addr);
228
229 if (cmd->sense)
230 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
231 cmd->sense_phys_addr);
232 }
233
234 /*
235 * Now destroy the pool itself
236 */
237 pci_pool_destroy(fusion->sg_dma_pool);
238 pci_pool_destroy(fusion->sense_dma_pool);
239
240 fusion->sg_dma_pool = NULL;
241 fusion->sense_dma_pool = NULL;
242}
243
244/**
245 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool
246 * @instance: Adapter soft state
247 */
248void
249megasas_free_cmds_fusion(struct megasas_instance *instance)
250{
251 int i;
252 struct fusion_context *fusion = instance->ctrl_context;
253
254 u32 max_cmds, req_sz, reply_sz, io_frames_sz;
255
256
257 req_sz = fusion->request_alloc_sz;
258 reply_sz = fusion->reply_alloc_sz;
259 io_frames_sz = fusion->io_frames_alloc_sz;
260
261 max_cmds = instance->max_fw_cmds;
262
263 /* Free descriptors and request Frames memory */
264 if (fusion->req_frames_desc)
265 dma_free_coherent(&instance->pdev->dev, req_sz,
266 fusion->req_frames_desc,
267 fusion->req_frames_desc_phys);
268
269 if (fusion->reply_frames_desc) {
270 pci_pool_free(fusion->reply_frames_desc_pool,
271 fusion->reply_frames_desc,
272 fusion->reply_frames_desc_phys);
273 pci_pool_destroy(fusion->reply_frames_desc_pool);
274 }
275
276 if (fusion->io_request_frames) {
277 pci_pool_free(fusion->io_request_frames_pool,
278 fusion->io_request_frames,
279 fusion->io_request_frames_phys);
280 pci_pool_destroy(fusion->io_request_frames_pool);
281 }
282
283 /* Free the Fusion frame pool */
284 megasas_teardown_frame_pool_fusion(instance);
285
286 /* Free all the commands in the cmd_list */
287 for (i = 0; i < max_cmds; i++)
288 kfree(fusion->cmd_list[i]);
289
290 /* Free the cmd_list buffer itself */
291 kfree(fusion->cmd_list);
292 fusion->cmd_list = NULL;
293
294 INIT_LIST_HEAD(&fusion->cmd_pool);
295}
296
297/**
298 * megasas_create_frame_pool_fusion - Creates DMA pool for cmd frames
299 * @instance: Adapter soft state
300 *
301 */
302static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
303{
304 int i;
305 u32 max_cmd;
306 struct fusion_context *fusion;
307 struct megasas_cmd_fusion *cmd;
308 u32 total_sz_chain_frame;
309
310 fusion = instance->ctrl_context;
311 max_cmd = instance->max_fw_cmds;
312
313 total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
314
315 /*
316 * Use DMA pool facility provided by PCI layer
317 */
318
319 fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
320 instance->pdev,
321 total_sz_chain_frame, 4,
322 0);
323 if (!fusion->sg_dma_pool) {
324 printk(KERN_DEBUG "megasas: failed to setup request pool "
325 "fusion\n");
326 return -ENOMEM;
327 }
328 fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
329 instance->pdev,
330 SCSI_SENSE_BUFFERSIZE, 64, 0);
331
332 if (!fusion->sense_dma_pool) {
333 printk(KERN_DEBUG "megasas: failed to setup sense pool "
334 "fusion\n");
335 pci_pool_destroy(fusion->sg_dma_pool);
336 fusion->sg_dma_pool = NULL;
337 return -ENOMEM;
338 }
339
340 /*
341 * Allocate and attach a frame to each of the commands in cmd_list
342 */
343 for (i = 0; i < max_cmd; i++) {
344
345 cmd = fusion->cmd_list[i];
346
347 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
348 GFP_KERNEL,
349 &cmd->sg_frame_phys_addr);
350
351 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
352 GFP_KERNEL, &cmd->sense_phys_addr);
353 /*
354 * megasas_teardown_frame_pool_fusion() takes care of freeing
355 * whatever has been allocated
356 */
357 if (!cmd->sg_frame || !cmd->sense) {
358 printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
359 megasas_teardown_frame_pool_fusion(instance);
360 return -ENOMEM;
361 }
362 }
363 return 0;
364}
365
366/**
367 * megasas_alloc_cmds_fusion - Allocates the command packets
368 * @instance: Adapter soft state
369 *
370 *
371 * Each frame has a 32-bit field called context. This context is used to get
372 * back the megasas_cmd_fusion from the frame when a frame gets completed
373 * In this driver, the 32 bit values are the indices into an array cmd_list.
374 * This array is used only to look up the megasas_cmd_fusion given the context.
375 * The free commands themselves are maintained in a linked list called cmd_pool.
376 *
377 * cmds are formed in the io_request and sg_frame members of the
378 * megasas_cmd_fusion. The context field is used to get a request descriptor
379 * and is used as SMID of the cmd.
380 * SMID value range is from 1 to max_fw_cmds.
381 */
382int
383megasas_alloc_cmds_fusion(struct megasas_instance *instance)
384{
385 int i, j;
386 u32 max_cmd, io_frames_sz;
387 struct fusion_context *fusion;
388 struct megasas_cmd_fusion *cmd;
389 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
390 u32 offset;
391 dma_addr_t io_req_base_phys;
392 u8 *io_req_base;
393
394 fusion = instance->ctrl_context;
395
396 max_cmd = instance->max_fw_cmds;
397
398 fusion->req_frames_desc =
399 dma_alloc_coherent(&instance->pdev->dev,
400 fusion->request_alloc_sz,
401 &fusion->req_frames_desc_phys, GFP_KERNEL);
402
403 if (!fusion->req_frames_desc) {
404 printk(KERN_ERR "megasas; Could not allocate memory for "
405 "request_frames\n");
406 goto fail_req_desc;
407 }
408
409 fusion->reply_frames_desc_pool =
410 pci_pool_create("reply_frames pool", instance->pdev,
411 fusion->reply_alloc_sz, 16, 0);
412
413 if (!fusion->reply_frames_desc_pool) {
414 printk(KERN_ERR "megasas; Could not allocate memory for "
415 "reply_frame pool\n");
416 goto fail_reply_desc;
417 }
418
419 fusion->reply_frames_desc =
420 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
421 &fusion->reply_frames_desc_phys);
422 if (!fusion->reply_frames_desc) {
423 printk(KERN_ERR "megasas; Could not allocate memory for "
424 "reply_frame pool\n");
425 pci_pool_destroy(fusion->reply_frames_desc_pool);
426 goto fail_reply_desc;
427 }
428
429 reply_desc = fusion->reply_frames_desc;
430 for (i = 0; i < fusion->reply_q_depth; i++, reply_desc++)
431 reply_desc->Words = ULLONG_MAX;
432
433 io_frames_sz = fusion->io_frames_alloc_sz;
434
435 fusion->io_request_frames_pool =
436 pci_pool_create("io_request_frames pool", instance->pdev,
437 fusion->io_frames_alloc_sz, 16, 0);
438
439 if (!fusion->io_request_frames_pool) {
440 printk(KERN_ERR "megasas: Could not allocate memory for "
441 "io_request_frame pool\n");
442 goto fail_io_frames;
443 }
444
445 fusion->io_request_frames =
446 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
447 &fusion->io_request_frames_phys);
448 if (!fusion->io_request_frames) {
449 printk(KERN_ERR "megasas: Could not allocate memory for "
450 "io_request_frames frames\n");
451 pci_pool_destroy(fusion->io_request_frames_pool);
452 goto fail_io_frames;
453 }
454
455 /*
456 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
457 * Allocate the dynamic array first and then allocate individual
458 * commands.
459 */
460 fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *)
461 *max_cmd, GFP_KERNEL);
462
463 if (!fusion->cmd_list) {
464 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
465 "memory for cmd_list_fusion\n");
466 goto fail_cmd_list;
467 }
468
469 memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
470 *max_cmd);
471
472 max_cmd = instance->max_fw_cmds;
473 for (i = 0; i < max_cmd; i++) {
474 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
475 GFP_KERNEL);
476 if (!fusion->cmd_list[i]) {
477 printk(KERN_ERR "Could not alloc cmd list fusion\n");
478
479 for (j = 0; j < i; j++)
480 kfree(fusion->cmd_list[j]);
481
482 kfree(fusion->cmd_list);
483 fusion->cmd_list = NULL;
484 goto fail_cmd_list;
485 }
486 }
487
488 /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
489 io_req_base = fusion->io_request_frames +
490 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
491 io_req_base_phys = fusion->io_request_frames_phys +
492 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
493
494 /*
495 * Add all the commands to command pool (fusion->cmd_pool)
496 */
497
498 /* SMID 0 is reserved. Set SMID/index from 1 */
499 for (i = 0; i < max_cmd; i++) {
500 cmd = fusion->cmd_list[i];
501 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
502 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
503 cmd->index = i + 1;
504 cmd->scmd = NULL;
505 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
506 cmd->instance = instance;
507 cmd->io_request =
508 (struct MPI2_RAID_SCSI_IO_REQUEST *)
509 (io_req_base + offset);
510 memset(cmd->io_request, 0,
511 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
512 cmd->io_request_phys_addr = io_req_base_phys + offset;
513
514 list_add_tail(&cmd->list, &fusion->cmd_pool);
515 }
516
517 /*
518 * Create a frame pool and assign one frame to each cmd
519 */
520 if (megasas_create_frame_pool_fusion(instance)) {
521 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
522 megasas_free_cmds_fusion(instance);
523 goto fail_req_desc;
524 }
525
526 return 0;
527
528fail_cmd_list:
529 pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
530 fusion->io_request_frames_phys);
531 pci_pool_destroy(fusion->io_request_frames_pool);
532fail_io_frames:
533 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
534 fusion->reply_frames_desc,
535 fusion->reply_frames_desc_phys);
536 pci_pool_free(fusion->reply_frames_desc_pool,
537 fusion->reply_frames_desc,
538 fusion->reply_frames_desc_phys);
539 pci_pool_destroy(fusion->reply_frames_desc_pool);
540
541fail_reply_desc:
542 dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
543 fusion->req_frames_desc,
544 fusion->req_frames_desc_phys);
545fail_req_desc:
546 return -ENOMEM;
547}
548
549/**
550 * wait_and_poll - Issues a polling command
551 * @instance: Adapter soft state
552 * @cmd: Command packet to be issued
553 *
554 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
555 */
556int
557wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd)
558{
559 int i;
560 struct megasas_header *frame_hdr = &cmd->frame->hdr;
561
562 u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
563
564 /*
565 * Wait for cmd_status to change
566 */
567 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
568 rmb();
569 msleep(20);
570 }
571
572 if (frame_hdr->cmd_status == 0xff)
573 return -ETIME;
574
575 return 0;
576}
577
578/**
579 * megasas_ioc_init_fusion - Initializes the FW
580 * @instance: Adapter soft state
581 *
582 * Issues the IOC Init cmd
583 */
584int
585megasas_ioc_init_fusion(struct megasas_instance *instance)
586{
587 struct megasas_init_frame *init_frame;
588 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
589 dma_addr_t ioc_init_handle;
590 u32 context;
591 struct megasas_cmd *cmd;
592 u8 ret;
593 struct fusion_context *fusion;
594 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
595 int i;
596 struct megasas_header *frame_hdr;
597
598 fusion = instance->ctrl_context;
599
600 cmd = megasas_get_cmd(instance);
601
602 if (!cmd) {
603 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
604 ret = 1;
605 goto fail_get_cmd;
606 }
607
608 IOCInitMessage =
609 dma_alloc_coherent(&instance->pdev->dev,
610 sizeof(struct MPI2_IOC_INIT_REQUEST),
611 &ioc_init_handle, GFP_KERNEL);
612
613 if (!IOCInitMessage) {
614 printk(KERN_ERR "Could not allocate memory for "
615 "IOCInitMessage\n");
616 ret = 1;
617 goto fail_fw_init;
618 }
619
620 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
621
622 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
623 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
624 IOCInitMessage->MsgVersion = MPI2_VERSION;
625 IOCInitMessage->HeaderVersion = MPI2_HEADER_VERSION;
626 IOCInitMessage->SystemRequestFrameSize =
627 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4;
628
629 IOCInitMessage->ReplyDescriptorPostQueueDepth = fusion->reply_q_depth;
630 IOCInitMessage->ReplyDescriptorPostQueueAddress =
631 fusion->reply_frames_desc_phys;
632 IOCInitMessage->SystemRequestFrameBaseAddress =
633 fusion->io_request_frames_phys;
634
635 init_frame = (struct megasas_init_frame *)cmd->frame;
636 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
637
638 frame_hdr = &cmd->frame->hdr;
639 context = init_frame->context;
640 init_frame->context = context;
641
642 frame_hdr->cmd_status = 0xFF;
643 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
644
645 init_frame->cmd = MFI_CMD_INIT;
646 init_frame->cmd_status = 0xFF;
647
648 init_frame->queue_info_new_phys_addr_lo = ioc_init_handle;
649 init_frame->data_xfer_len = sizeof(struct MPI2_IOC_INIT_REQUEST);
650
651 req_desc =
652 (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)fusion->req_frames_desc;
653
654 req_desc->Words = cmd->frame_phys_addr;
655 req_desc->MFAIo.RequestFlags =
656 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
657 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
658
659 /*
660 * disable the intr before firing the init frame
661 */
662 instance->instancet->disable_intr(instance->reg_set);
663
664 for (i = 0; i < (10 * 1000); i += 20) {
665 if (readl(&instance->reg_set->doorbell) & 1)
666 msleep(20);
667 else
668 break;
669 }
670
671 instance->instancet->fire_cmd(instance, req_desc->u.low,
672 req_desc->u.high, instance->reg_set);
673
674 wait_and_poll(instance, cmd);
675
676 frame_hdr = &cmd->frame->hdr;
677 if (frame_hdr->cmd_status != 0) {
678 ret = 1;
679 goto fail_fw_init;
680 }
681 printk(KERN_ERR "megasas:IOC Init cmd success\n");
682
683 ret = 0;
684
685fail_fw_init:
686 megasas_return_cmd(instance, cmd);
687 if (IOCInitMessage)
688 dma_free_coherent(&instance->pdev->dev,
689 sizeof(struct MPI2_IOC_INIT_REQUEST),
690 IOCInitMessage, ioc_init_handle);
691fail_get_cmd:
692 return ret;
693}
694
695/*
696 * megasas_return_cmd_for_smid - Returns a cmd_fusion for a SMID
697 * @instance: Adapter soft state
698 *
699 */
700void
701megasas_return_cmd_for_smid(struct megasas_instance *instance, u16 smid)
702{
703 struct fusion_context *fusion;
704 struct megasas_cmd_fusion *cmd;
705
706 fusion = instance->ctrl_context;
707 cmd = fusion->cmd_list[smid - 1];
708 megasas_return_cmd_fusion(instance, cmd);
709}
710
711/*
712 * megasas_get_ld_map_info - Returns FW's ld_map structure
713 * @instance: Adapter soft state
714 * @pend: Pend the command or not
715 * Issues an internal command (DCMD) to get the FW's controller PD
716 * list structure. This information is mainly used to find out SYSTEM
717 * supported by the FW.
718 */
719static int
720megasas_get_ld_map_info(struct megasas_instance *instance)
721{
722 int ret = 0;
723 struct megasas_cmd *cmd;
724 struct megasas_dcmd_frame *dcmd;
725 struct MR_FW_RAID_MAP_ALL *ci;
726 dma_addr_t ci_h = 0;
727 u32 size_map_info;
728 struct fusion_context *fusion;
729
730 cmd = megasas_get_cmd(instance);
731
732 if (!cmd) {
733 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
734 return -ENOMEM;
735 }
736
737 fusion = instance->ctrl_context;
738
739 if (!fusion) {
740 megasas_return_cmd(instance, cmd);
741 return 1;
742 }
743
744 dcmd = &cmd->frame->dcmd;
745
746 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
747 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
748
749 ci = fusion->ld_map[(instance->map_id & 1)];
750 ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
751
752 if (!ci) {
753 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
754 megasas_return_cmd(instance, cmd);
755 return -ENOMEM;
756 }
757
758 memset(ci, 0, sizeof(*ci));
759 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
760
761 dcmd->cmd = MFI_CMD_DCMD;
762 dcmd->cmd_status = 0xFF;
763 dcmd->sge_count = 1;
764 dcmd->flags = MFI_FRAME_DIR_READ;
765 dcmd->timeout = 0;
766 dcmd->pad_0 = 0;
767 dcmd->data_xfer_len = size_map_info;
768 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
769 dcmd->sgl.sge32[0].phys_addr = ci_h;
770 dcmd->sgl.sge32[0].length = size_map_info;
771
772 if (!megasas_issue_polled(instance, cmd))
773 ret = 0;
774 else {
775 printk(KERN_ERR "megasas: Get LD Map Info Failed\n");
776 ret = -1;
777 }
778
779 megasas_return_cmd(instance, cmd);
780
781 return ret;
782}
783
784u8
785megasas_get_map_info(struct megasas_instance *instance)
786{
787 struct fusion_context *fusion = instance->ctrl_context;
788
789 fusion->fast_path_io = 0;
790 if (!megasas_get_ld_map_info(instance)) {
791 if (MR_ValidateMapInfo(fusion->ld_map[(instance->map_id & 1)],
792 fusion->load_balance_info)) {
793 fusion->fast_path_io = 1;
794 return 0;
795 }
796 }
797 return 1;
798}
799
800/*
801 * megasas_sync_map_info - Returns FW's ld_map structure
802 * @instance: Adapter soft state
803 *
804 * Issues an internal command (DCMD) to get the FW's controller PD
805 * list structure. This information is mainly used to find out SYSTEM
806 * supported by the FW.
807 */
808int
809megasas_sync_map_info(struct megasas_instance *instance)
810{
811 int ret = 0, i;
812 struct megasas_cmd *cmd;
813 struct megasas_dcmd_frame *dcmd;
814 u32 size_sync_info, num_lds;
815 struct fusion_context *fusion;
816 struct MR_LD_TARGET_SYNC *ci = NULL;
817 struct MR_FW_RAID_MAP_ALL *map;
818 struct MR_LD_RAID *raid;
819 struct MR_LD_TARGET_SYNC *ld_sync;
820 dma_addr_t ci_h = 0;
821 u32 size_map_info;
822
823 cmd = megasas_get_cmd(instance);
824
825 if (!cmd) {
826 printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
827 "info.\n");
828 return -ENOMEM;
829 }
830
831 fusion = instance->ctrl_context;
832
833 if (!fusion) {
834 megasas_return_cmd(instance, cmd);
835 return 1;
836 }
837
838 map = fusion->ld_map[instance->map_id & 1];
839
840 num_lds = map->raidMap.ldCount;
841
842 dcmd = &cmd->frame->dcmd;
843
844 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
845
846 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
847
848 ci = (struct MR_LD_TARGET_SYNC *)
849 fusion->ld_map[(instance->map_id - 1) & 1];
850 memset(ci, 0, sizeof(struct MR_FW_RAID_MAP_ALL));
851
852 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
853
854 ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
855
856 for (i = 0; i < num_lds; i++, ld_sync++) {
857 raid = MR_LdRaidGet(i, map);
858 ld_sync->targetId = MR_GetLDTgtId(i, map);
859 ld_sync->seqNum = raid->seqNum;
860 }
861
862 size_map_info = sizeof(struct MR_FW_RAID_MAP) +
863 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
864
865 dcmd->cmd = MFI_CMD_DCMD;
866 dcmd->cmd_status = 0xFF;
867 dcmd->sge_count = 1;
868 dcmd->flags = MFI_FRAME_DIR_WRITE;
869 dcmd->timeout = 0;
870 dcmd->pad_0 = 0;
871 dcmd->data_xfer_len = size_map_info;
872 dcmd->mbox.b[0] = num_lds;
873 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
874 dcmd->opcode = MR_DCMD_LD_MAP_GET_INFO;
875 dcmd->sgl.sge32[0].phys_addr = ci_h;
876 dcmd->sgl.sge32[0].length = size_map_info;
877
878 instance->map_update_cmd = cmd;
879
880 instance->instancet->issue_dcmd(instance, cmd);
881
882 return ret;
883}
884
885/**
886 * megasas_init_adapter_fusion - Initializes the FW
887 * @instance: Adapter soft state
888 *
889 * This is the main function for initializing firmware.
890 */
891u32
892megasas_init_adapter_fusion(struct megasas_instance *instance)
893{
894 struct megasas_register_set __iomem *reg_set;
895 struct fusion_context *fusion;
896 u32 max_cmd;
897 int i = 0;
898
899 fusion = instance->ctrl_context;
900
901 reg_set = instance->reg_set;
902
903 /*
904 * Get various operational parameters from status register
905 */
906 instance->max_fw_cmds =
907 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
908 instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
909
910 /*
911 * Reduce the max supported cmds by 1. This is to ensure that the
912 * reply_q_sz (1 more than the max cmd that driver may send)
913 * does not exceed max cmds that the FW can support
914 */
915 instance->max_fw_cmds = instance->max_fw_cmds-1;
916 /* Only internal cmds (DCMD) need to have MFI frames */
917 instance->max_mfi_cmds = MEGASAS_INT_CMDS;
918
919 max_cmd = instance->max_fw_cmds;
920
921 fusion->reply_q_depth = ((max_cmd + 1 + 15)/16)*16;
922
923 fusion->request_alloc_sz =
924 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
925 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
926 *(fusion->reply_q_depth);
927 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
928 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
929 (max_cmd + 1)); /* Extra 1 for SMID 0 */
930
931 fusion->max_sge_in_main_msg =
932 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
933 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
934
935 fusion->max_sge_in_chain =
936 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
937
938 instance->max_num_sge = fusion->max_sge_in_main_msg +
939 fusion->max_sge_in_chain - 2;
940
941 /* Used for pass thru MFI frame (DCMD) */
942 fusion->chain_offset_mfi_pthru =
943 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
944
945 fusion->chain_offset_io_request =
946 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
947 sizeof(union MPI2_SGE_IO_UNION))/16;
948
949 fusion->last_reply_idx = 0;
950
951 /*
952 * Allocate memory for descriptors
953 * Create a pool of commands
954 */
955 if (megasas_alloc_cmds(instance))
956 goto fail_alloc_mfi_cmds;
957 if (megasas_alloc_cmds_fusion(instance))
958 goto fail_alloc_cmds;
959
960 if (megasas_ioc_init_fusion(instance))
961 goto fail_ioc_init;
962
963 instance->flag_ieee = 1;
964
965 fusion->map_sz = sizeof(struct MR_FW_RAID_MAP) +
966 (sizeof(struct MR_LD_SPAN_MAP) *(MAX_LOGICAL_DRIVES - 1));
967
968 fusion->fast_path_io = 0;
969
970 for (i = 0; i < 2; i++) {
971 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
972 fusion->map_sz,
973 &fusion->ld_map_phys[i],
974 GFP_KERNEL);
975 if (!fusion->ld_map[i]) {
976 printk(KERN_ERR "megasas: Could not allocate memory "
977 "for map info\n");
978 goto fail_map_info;
979 }
980 }
981
982 if (!megasas_get_map_info(instance))
983 megasas_sync_map_info(instance);
984
985 return 0;
986
987fail_alloc_cmds:
988fail_alloc_mfi_cmds:
989fail_map_info:
990 if (i == 1)
991 dma_free_coherent(&instance->pdev->dev, fusion->map_sz,
992 fusion->ld_map[0], fusion->ld_map_phys[0]);
993fail_ioc_init:
994 return 1;
995}
996
997/**
998 * megasas_fire_cmd_fusion - Sends command to the FW
999 * @frame_phys_addr : Physical address of cmd
1000 * @frame_count : Number of frames for the command
1001 * @regs : MFI register set
1002 */
1003void
1004megasas_fire_cmd_fusion(struct megasas_instance *instance,
1005 dma_addr_t req_desc_lo,
1006 u32 req_desc_hi,
1007 struct megasas_register_set __iomem *regs)
1008{
1009 unsigned long flags;
1010
1011 spin_lock_irqsave(&instance->hba_lock, flags);
1012
1013 writel(req_desc_lo,
1014 &(regs)->inbound_low_queue_port);
1015 writel(req_desc_hi, &(regs)->inbound_high_queue_port);
1016 spin_unlock_irqrestore(&instance->hba_lock, flags);
1017}
1018
1019/**
1020 * map_cmd_status - Maps FW cmd status to OS cmd status
1021 * @cmd : Pointer to cmd
1022 * @status : status of cmd returned by FW
1023 * @ext_status : ext status of cmd returned by FW
1024 */
1025
1026void
1027map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1028{
1029
1030 switch (status) {
1031
1032 case MFI_STAT_OK:
1033 cmd->scmd->result = DID_OK << 16;
1034 break;
1035
1036 case MFI_STAT_SCSI_IO_FAILED:
1037 case MFI_STAT_LD_INIT_IN_PROGRESS:
1038 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1039 break;
1040
1041 case MFI_STAT_SCSI_DONE_WITH_ERROR:
1042
1043 cmd->scmd->result = (DID_OK << 16) | ext_status;
1044 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1045 memset(cmd->scmd->sense_buffer, 0,
1046 SCSI_SENSE_BUFFERSIZE);
1047 memcpy(cmd->scmd->sense_buffer, cmd->sense,
1048 SCSI_SENSE_BUFFERSIZE);
1049 cmd->scmd->result |= DRIVER_SENSE << 24;
1050 }
1051 break;
1052
1053 case MFI_STAT_LD_OFFLINE:
1054 case MFI_STAT_DEVICE_NOT_FOUND:
1055 cmd->scmd->result = DID_BAD_TARGET << 16;
1056 break;
1057
1058 default:
1059 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1060 cmd->scmd->result = DID_ERROR << 16;
1061 break;
1062 }
1063}
1064
1065/**
1066 * megasas_make_sgl_fusion - Prepares 32-bit SGL
1067 * @instance: Adapter soft state
1068 * @scp: SCSI command from the mid-layer
1069 * @sgl_ptr: SGL to be filled in
1070 * @cmd: cmd we are working on
1071 *
1072 * If successful, this function returns the number of SG elements.
1073 */
1074static int
1075megasas_make_sgl_fusion(struct megasas_instance *instance,
1076 struct scsi_cmnd *scp,
1077 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1078 struct megasas_cmd_fusion *cmd)
1079{
1080 int i, sg_processed;
1081 int sge_count, sge_idx;
1082 struct scatterlist *os_sgl;
1083 struct fusion_context *fusion;
1084
1085 fusion = instance->ctrl_context;
1086
1087 cmd->io_request->ChainOffset = 0;
1088
1089 sge_count = scsi_dma_map(scp);
1090
1091 BUG_ON(sge_count < 0);
1092
1093 if (sge_count > instance->max_num_sge || !sge_count)
1094 return sge_count;
1095
1096 if (sge_count > fusion->max_sge_in_main_msg) {
1097 /* One element to store the chain info */
1098 sge_idx = fusion->max_sge_in_main_msg - 1;
1099 } else
1100 sge_idx = sge_count;
1101
1102 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1103 sgl_ptr->Length = sg_dma_len(os_sgl);
1104 sgl_ptr->Address = sg_dma_address(os_sgl);
1105 sgl_ptr->Flags = 0;
1106 sgl_ptr++;
1107
1108 sg_processed = i + 1;
1109
1110 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) &&
1111 (sge_count > fusion->max_sge_in_main_msg)) {
1112
1113 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1114 cmd->io_request->ChainOffset =
1115 fusion->chain_offset_io_request;
1116 sg_chain = sgl_ptr;
1117 /* Prepare chain element */
1118 sg_chain->NextChainOffset = 0;
1119 sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1120 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1121 sg_chain->Length = (sizeof(union MPI2_SGE_IO_UNION)
1122 *(sge_count - sg_processed));
1123 sg_chain->Address = cmd->sg_frame_phys_addr;
1124
1125 sgl_ptr =
1126 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1127 }
1128 }
1129
1130 return sge_count;
1131}
1132
1133/**
1134 * megasas_set_pd_lba - Sets PD LBA
1135 * @cdb: CDB
1136 * @cdb_len: cdb length
1137 * @start_blk: Start block of IO
1138 *
1139 * Used to set the PD LBA in CDB for FP IOs
1140 */
1141void
1142megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1143 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1144 struct MR_FW_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1145{
1146 struct MR_LD_RAID *raid;
1147 u32 ld;
1148 u64 start_blk = io_info->pdBlock;
1149 u8 *cdb = io_request->CDB.CDB32;
1150 u32 num_blocks = io_info->numBlocks;
1151 u8 opcode, flagvals, groupnum, control;
1152
1153 /* Check if T10 PI (DIF) is enabled for this LD */
1154 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1155 raid = MR_LdRaidGet(ld, local_map_ptr);
1156 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1157 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1158 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1159 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN;
1160
1161 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1162 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1163 else
1164 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1165 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1166
1167 /* LBA */
1168 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1169 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1170 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1171 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1172 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1173 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1174 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1175 cdb[19] = (u8)(start_blk & 0xff);
1176
1177 /* Logical block reference tag */
1178 io_request->CDB.EEDP32.PrimaryReferenceTag =
1179 cpu_to_be32(ref_tag);
1180 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xffff;
1181
1182 io_request->DataLength = num_blocks * 512;
1183 io_request->IoFlags = 32; /* Specify 32-byte cdb */
1184
1185 /* Transfer length */
1186 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1187 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1188 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1189 cdb[31] = (u8)(num_blocks & 0xff);
1190
1191 /* set SCSI IO EEDPFlags */
1192 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1193 io_request->EEDPFlags =
1194 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1195 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1196 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1197 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1198 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
1199 } else {
1200 io_request->EEDPFlags =
1201 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1202 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
1203 }
1204 io_request->Control |= (0x4 << 26);
1205 io_request->EEDPBlockSize = MEGASAS_EEDPBLOCKSIZE;
1206 } else {
1207 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1208 if (((cdb_len == 12) || (cdb_len == 16)) &&
1209 (start_blk <= 0xffffffff)) {
1210 if (cdb_len == 16) {
1211 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1212 flagvals = cdb[1];
1213 groupnum = cdb[14];
1214 control = cdb[15];
1215 } else {
1216 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1217 flagvals = cdb[1];
1218 groupnum = cdb[10];
1219 control = cdb[11];
1220 }
1221
1222 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1223
1224 cdb[0] = opcode;
1225 cdb[1] = flagvals;
1226 cdb[6] = groupnum;
1227 cdb[9] = control;
1228
1229 /* Transfer length */
1230 cdb[8] = (u8)(num_blocks & 0xff);
1231 cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1232
1233 cdb_len = 10;
1234 }
1235
1236 /* Normal case, just load LBA here */
1237 switch (cdb_len) {
1238 case 6:
1239 {
1240 u8 val = cdb[1] & 0xE0;
1241 cdb[3] = (u8)(start_blk & 0xff);
1242 cdb[2] = (u8)((start_blk >> 8) & 0xff);
1243 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1244 break;
1245 }
1246 case 10:
1247 cdb[5] = (u8)(start_blk & 0xff);
1248 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1249 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1250 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1251 break;
1252 case 12:
1253 cdb[5] = (u8)(start_blk & 0xff);
1254 cdb[4] = (u8)((start_blk >> 8) & 0xff);
1255 cdb[3] = (u8)((start_blk >> 16) & 0xff);
1256 cdb[2] = (u8)((start_blk >> 24) & 0xff);
1257 break;
1258 case 16:
1259 cdb[9] = (u8)(start_blk & 0xff);
1260 cdb[8] = (u8)((start_blk >> 8) & 0xff);
1261 cdb[7] = (u8)((start_blk >> 16) & 0xff);
1262 cdb[6] = (u8)((start_blk >> 24) & 0xff);
1263 cdb[5] = (u8)((start_blk >> 32) & 0xff);
1264 cdb[4] = (u8)((start_blk >> 40) & 0xff);
1265 cdb[3] = (u8)((start_blk >> 48) & 0xff);
1266 cdb[2] = (u8)((start_blk >> 56) & 0xff);
1267 break;
1268 }
1269 }
1270}
1271
1272/**
1273 * megasas_build_ldio_fusion - Prepares IOs to devices
1274 * @instance: Adapter soft state
1275 * @scp: SCSI command
1276 * @cmd: Command to be prepared
1277 *
1278 * Prepares the io_request and chain elements (sg_frame) for IO
1279 * The IO can be for PD (Fast Path) or LD
1280 */
1281void
1282megasas_build_ldio_fusion(struct megasas_instance *instance,
1283 struct scsi_cmnd *scp,
1284 struct megasas_cmd_fusion *cmd)
1285{
1286 u8 fp_possible;
1287 u32 start_lba_lo, start_lba_hi, device_id;
1288 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1289 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1290 struct IO_REQUEST_INFO io_info;
1291 struct fusion_context *fusion;
1292 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1293
1294 device_id = MEGASAS_DEV_INDEX(instance, scp);
1295
1296 fusion = instance->ctrl_context;
1297
1298 io_request = cmd->io_request;
1299 io_request->RaidContext.VirtualDiskTgtId = device_id;
1300 io_request->RaidContext.status = 0;
1301 io_request->RaidContext.exStatus = 0;
1302
1303 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1304
1305 start_lba_lo = 0;
1306 start_lba_hi = 0;
1307 fp_possible = 0;
1308
1309 /*
1310 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1311 */
1312 if (scp->cmd_len == 6) {
1313 io_request->DataLength = (u32) scp->cmnd[4];
1314 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1315 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1316
1317 start_lba_lo &= 0x1FFFFF;
1318 }
1319
1320 /*
1321 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1322 */
1323 else if (scp->cmd_len == 10) {
1324 io_request->DataLength = (u32) scp->cmnd[8] |
1325 ((u32) scp->cmnd[7] << 8);
1326 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1327 ((u32) scp->cmnd[3] << 16) |
1328 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1329 }
1330
1331 /*
1332 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1333 */
1334 else if (scp->cmd_len == 12) {
1335 io_request->DataLength = ((u32) scp->cmnd[6] << 24) |
1336 ((u32) scp->cmnd[7] << 16) |
1337 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1338 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1339 ((u32) scp->cmnd[3] << 16) |
1340 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1341 }
1342
1343 /*
1344 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1345 */
1346 else if (scp->cmd_len == 16) {
1347 io_request->DataLength = ((u32) scp->cmnd[10] << 24) |
1348 ((u32) scp->cmnd[11] << 16) |
1349 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1350 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1351 ((u32) scp->cmnd[7] << 16) |
1352 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1353
1354 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1355 ((u32) scp->cmnd[3] << 16) |
1356 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1357 }
1358
1359 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1360 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1361 io_info.numBlocks = io_request->DataLength;
1362 io_info.ldTgtId = device_id;
1363
1364 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1365 io_info.isRead = 1;
1366
1367 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1368
1369 if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1370 MAX_LOGICAL_DRIVES) || (!fusion->fast_path_io)) {
1371 io_request->RaidContext.regLockFlags = 0;
1372 fp_possible = 0;
1373 } else {
1374 if (MR_BuildRaidContext(&io_info, &io_request->RaidContext,
1375 local_map_ptr))
1376 fp_possible = io_info.fpOkForIo;
1377 }
1378
1379 if (fp_possible) {
1380 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1381 local_map_ptr, start_lba_lo);
1382 io_request->DataLength = scsi_bufflen(scp);
1383 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1384 cmd->request_desc->SCSIIO.RequestFlags =
1385 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1386 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1387 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1388 (io_info.isRead)) {
1389 io_info.devHandle =
1390 get_updated_dev_handle(
1391 &fusion->load_balance_info[device_id],
1392 &io_info);
1393 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1394 } else
1395 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1396 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1397 io_request->DevHandle = io_info.devHandle;
1398 } else {
1399 io_request->RaidContext.timeoutValue =
1400 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1401 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1402 io_request->DevHandle = device_id;
1403 cmd->request_desc->SCSIIO.RequestFlags =
1404 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1405 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1406 } /* Not FP */
1407}
1408
1409/**
1410 * megasas_build_dcdb_fusion - Prepares IOs to devices
1411 * @instance: Adapter soft state
1412 * @scp: SCSI command
1413 * @cmd: Command to be prepared
1414 *
1415 * Prepares the io_request frame for non-io cmds
1416 */
1417static void
1418megasas_build_dcdb_fusion(struct megasas_instance *instance,
1419 struct scsi_cmnd *scmd,
1420 struct megasas_cmd_fusion *cmd)
1421{
1422 u32 device_id;
1423 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1424 u16 pd_index = 0;
1425 struct MR_FW_RAID_MAP_ALL *local_map_ptr;
1426 struct fusion_context *fusion = instance->ctrl_context;
1427
1428 io_request = cmd->io_request;
1429 device_id = MEGASAS_DEV_INDEX(instance, scmd);
1430 pd_index = (scmd->device->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
1431 +scmd->device->id;
1432 local_map_ptr = fusion->ld_map[(instance->map_id & 1)];
1433
1434 /* Check if this is a system PD I/O */
1435 if ((instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) &&
1436 (instance->pd_list[pd_index].driveType == TYPE_DISK)) {
1437 io_request->Function = 0;
1438 io_request->DevHandle =
1439 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1440 io_request->RaidContext.timeoutValue =
1441 local_map_ptr->raidMap.fpPdIoTimeoutSec;
1442 io_request->RaidContext.regLockFlags = 0;
1443 io_request->RaidContext.regLockRowLBA = 0;
1444 io_request->RaidContext.regLockLength = 0;
1445 io_request->RaidContext.RAIDFlags =
1446 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD <<
1447 MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1448 cmd->request_desc->SCSIIO.RequestFlags =
1449 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1450 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1451 } else {
1452 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1453 io_request->DevHandle = device_id;
1454 cmd->request_desc->SCSIIO.RequestFlags =
1455 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1456 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1457 }
1458 io_request->RaidContext.VirtualDiskTgtId = device_id;
1459 io_request->LUN[0] = scmd->device->lun;
1460 io_request->DataLength = scsi_bufflen(scmd);
1461}
1462
1463/**
1464 * megasas_build_io_fusion - Prepares IOs to devices
1465 * @instance: Adapter soft state
1466 * @scp: SCSI command
1467 * @cmd: Command to be prepared
1468 *
1469 * Invokes helper functions to prepare request frames
1470 * and sets flags appropriate for IO/Non-IO cmd
1471 */
1472int
1473megasas_build_io_fusion(struct megasas_instance *instance,
1474 struct scsi_cmnd *scp,
1475 struct megasas_cmd_fusion *cmd)
1476{
1477 u32 device_id, sge_count;
1478 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1479
1480 device_id = MEGASAS_DEV_INDEX(instance, scp);
1481
1482 /* Zero out some fields so they don't get reused */
1483 io_request->LUN[0] = 0;
1484 io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1485 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1486 io_request->EEDPFlags = 0;
1487 io_request->Control = 0;
1488 io_request->EEDPBlockSize = 0;
1489 io_request->IoFlags = 0;
1490 io_request->RaidContext.RAIDFlags = 0;
1491
1492 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1493 /*
1494 * Just the CDB length,rest of the Flags are zero
1495 * This will be modified for FP in build_ldio_fusion
1496 */
1497 io_request->IoFlags = scp->cmd_len;
1498
1499 if (megasas_is_ldio(scp))
1500 megasas_build_ldio_fusion(instance, scp, cmd);
1501 else
1502 megasas_build_dcdb_fusion(instance, scp, cmd);
1503
1504 /*
1505 * Construct SGL
1506 */
1507
1508 sge_count =
1509 megasas_make_sgl_fusion(instance, scp,
1510 (struct MPI25_IEEE_SGE_CHAIN64 *)
1511 &io_request->SGL, cmd);
1512
1513 if (sge_count > instance->max_num_sge) {
1514 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1515 "max (0x%x) allowed\n", sge_count,
1516 instance->max_num_sge);
1517 return 1;
1518 }
1519
1520 io_request->RaidContext.numSGE = sge_count;
1521
1522 io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
1523
1524 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1525 io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
1526 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1527 io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
1528
1529 io_request->SGLOffset0 =
1530 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1531
1532 io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
1533 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1534
1535 cmd->scmd = scp;
1536 scp->SCp.ptr = (char *)cmd;
1537
1538 return 0;
1539}
1540
1541union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1542megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1543{
1544 u8 *p;
1545 struct fusion_context *fusion;
1546
1547 if (index >= instance->max_fw_cmds) {
1548 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1549 "descriptor\n", index);
1550 return NULL;
1551 }
1552 fusion = instance->ctrl_context;
1553 p = fusion->req_frames_desc
1554 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1555
1556 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1557}
1558
1559/**
1560 * megasas_build_and_issue_cmd_fusion -Main routine for building and
1561 * issuing non IOCTL cmd
1562 * @instance: Adapter soft state
1563 * @scmd: pointer to scsi cmd from OS
1564 */
1565static u32
1566megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1567 struct scsi_cmnd *scmd)
1568{
1569 struct megasas_cmd_fusion *cmd;
1570 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1571 u32 index;
1572 struct fusion_context *fusion;
1573
1574 fusion = instance->ctrl_context;
1575
1576 cmd = megasas_get_cmd_fusion(instance);
1577 if (!cmd)
1578 return SCSI_MLQUEUE_HOST_BUSY;
1579
1580 index = cmd->index;
1581
1582 req_desc = megasas_get_request_descriptor(instance, index-1);
1583 if (!req_desc)
1584 return 1;
1585
1586 req_desc->Words = 0;
1587 cmd->request_desc = req_desc;
1588 cmd->request_desc->Words = 0;
1589
1590 if (megasas_build_io_fusion(instance, scmd, cmd)) {
1591 megasas_return_cmd_fusion(instance, cmd);
1592 printk(KERN_ERR "megasas: Error building command.\n");
1593 cmd->request_desc = NULL;
1594 return 1;
1595 }
1596
1597 req_desc = cmd->request_desc;
1598 req_desc->SCSIIO.SMID = index;
1599
1600 if (cmd->io_request->ChainOffset != 0 &&
1601 cmd->io_request->ChainOffset != 0xF)
1602 printk(KERN_ERR "megasas: The chain offset value is not "
1603 "correct : %x\n", cmd->io_request->ChainOffset);
1604
1605 /*
1606 * Issue the command to the FW
1607 */
1608 atomic_inc(&instance->fw_outstanding);
1609
1610 instance->instancet->fire_cmd(instance,
1611 req_desc->u.low, req_desc->u.high,
1612 instance->reg_set);
1613
1614 return 0;
1615}
1616
1617/**
1618 * complete_cmd_fusion - Completes command
1619 * @instance: Adapter soft state
1620 * Completes all commands that is in reply descriptor queue
1621 */
1622int
1623complete_cmd_fusion(struct megasas_instance *instance)
1624{
1625 union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1626 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1627 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1628 struct fusion_context *fusion;
1629 struct megasas_cmd *cmd_mfi;
1630 struct megasas_cmd_fusion *cmd_fusion;
1631 u16 smid, num_completed;
1632 u8 reply_descript_type, arm;
1633 u32 status, extStatus, device_id;
1634 union desc_value d_val;
1635 struct LD_LOAD_BALANCE_INFO *lbinfo;
1636
1637 fusion = instance->ctrl_context;
1638
1639 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1640 return IRQ_HANDLED;
1641
1642 desc = fusion->reply_frames_desc;
1643 desc += fusion->last_reply_idx;
1644
1645 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1646
1647 d_val.word = desc->Words;
1648
1649 reply_descript_type = reply_desc->ReplyFlags &
1650 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1651
1652 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1653 return IRQ_NONE;
1654
1655 d_val.word = desc->Words;
1656
1657 num_completed = 0;
1658
1659 while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
1660 smid = reply_desc->SMID;
1661
1662 cmd_fusion = fusion->cmd_list[smid - 1];
1663
1664 scsi_io_req =
1665 (struct MPI2_RAID_SCSI_IO_REQUEST *)
1666 cmd_fusion->io_request;
1667
1668 if (cmd_fusion->scmd)
1669 cmd_fusion->scmd->SCp.ptr = NULL;
1670
1671 status = scsi_io_req->RaidContext.status;
1672 extStatus = scsi_io_req->RaidContext.exStatus;
1673
1674 switch (scsi_io_req->Function) {
1675 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/
1676 /* Update load balancing info */
1677 device_id = MEGASAS_DEV_INDEX(instance,
1678 cmd_fusion->scmd);
1679 lbinfo = &fusion->load_balance_info[device_id];
1680 if (cmd_fusion->scmd->SCp.Status &
1681 MEGASAS_LOAD_BALANCE_FLAG) {
1682 arm = lbinfo->raid1DevHandle[0] ==
1683 cmd_fusion->io_request->DevHandle ? 0 :
1684 1;
1685 atomic_dec(&lbinfo->scsi_pending_cmds[arm]);
1686 cmd_fusion->scmd->SCp.Status &=
1687 ~MEGASAS_LOAD_BALANCE_FLAG;
1688 }
1689 if (reply_descript_type ==
1690 MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
1691 if (megasas_dbg_lvl == 5)
1692 printk(KERN_ERR "\nmegasas: FAST Path "
1693 "IO Success\n");
1694 }
1695 /* Fall thru and complete IO */
1696 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
1697 /* Map the FW Cmd Status */
1698 map_cmd_status(cmd_fusion, status, extStatus);
1699 scsi_dma_unmap(cmd_fusion->scmd);
1700 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
1701 scsi_io_req->RaidContext.status = 0;
1702 scsi_io_req->RaidContext.exStatus = 0;
1703 megasas_return_cmd_fusion(instance, cmd_fusion);
1704 atomic_dec(&instance->fw_outstanding);
1705
1706 break;
1707 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
1708 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1709 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1710 cmd_fusion->flags = 0;
1711 megasas_return_cmd_fusion(instance, cmd_fusion);
1712
1713 break;
1714 }
1715
1716 fusion->last_reply_idx++;
1717 if (fusion->last_reply_idx >= fusion->reply_q_depth)
1718 fusion->last_reply_idx = 0;
1719
1720 desc->Words = ULLONG_MAX;
1721 num_completed++;
1722
1723 /* Get the next reply descriptor */
1724 if (!fusion->last_reply_idx)
1725 desc = fusion->reply_frames_desc;
1726 else
1727 desc++;
1728
1729 reply_desc =
1730 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
1731
1732 d_val.word = desc->Words;
1733
1734 reply_descript_type = reply_desc->ReplyFlags &
1735 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
1736
1737 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
1738 break;
1739 }
1740
1741 if (!num_completed)
1742 return IRQ_NONE;
1743
1744 wmb();
1745 writel(fusion->last_reply_idx,
1746 &instance->reg_set->reply_post_host_index);
1747
1748 return IRQ_HANDLED;
1749}
1750
1751/**
1752 * megasas_complete_cmd_dpc_fusion - Completes command
1753 * @instance: Adapter soft state
1754 *
1755 * Tasklet to complete cmds
1756 */
1757void
1758megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
1759{
1760 struct megasas_instance *instance =
1761 (struct megasas_instance *)instance_addr;
1762 unsigned long flags;
1763
1764 /* If we have already declared adapter dead, donot complete cmds */
1765 spin_lock_irqsave(&instance->hba_lock, flags);
1766 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1767 spin_unlock_irqrestore(&instance->hba_lock, flags);
1768 return;
1769 }
1770 spin_unlock_irqrestore(&instance->hba_lock, flags);
1771
1772 spin_lock_irqsave(&instance->completion_lock, flags);
1773 complete_cmd_fusion(instance);
1774 spin_unlock_irqrestore(&instance->completion_lock, flags);
1775}
1776
1777/**
1778 * megasas_isr_fusion - isr entry point
1779 */
1780irqreturn_t megasas_isr_fusion(int irq, void *devp)
1781{
1782 struct megasas_instance *instance = (struct megasas_instance *)devp;
1783 u32 mfiStatus, fw_state;
1784
1785 if (!instance->msi_flag) {
1786 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
1787 if (!mfiStatus)
1788 return IRQ_NONE;
1789 }
1790
1791 /* If we are resetting, bail */
1792 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
1793 return IRQ_HANDLED;
1794
1795 if (!complete_cmd_fusion(instance)) {
1796 /* If we didn't complete any commands, check for FW fault */
1797 fw_state = instance->instancet->read_fw_status_reg(
1798 instance->reg_set) & MFI_STATE_MASK;
1799 if (fw_state == MFI_STATE_FAULT)
1800 schedule_work(&instance->work_init);
1801 }
1802
1803 return IRQ_HANDLED;
1804}
1805
1806/**
1807 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
1808 * @instance: Adapter soft state
1809 * mfi_cmd: megasas_cmd pointer
1810 *
1811 */
1812u8
1813build_mpt_mfi_pass_thru(struct megasas_instance *instance,
1814 struct megasas_cmd *mfi_cmd)
1815{
1816 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
1817 struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
1818 struct megasas_cmd_fusion *cmd;
1819 struct fusion_context *fusion;
1820 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
1821
1822 cmd = megasas_get_cmd_fusion(instance);
1823 if (!cmd)
1824 return 1;
1825
1826 /* Save the smid. To be used for returning the cmd */
1827 mfi_cmd->context.smid = cmd->index;
1828
1829 cmd->sync_cmd_idx = mfi_cmd->index;
1830
1831 /*
1832 * For cmds where the flag is set, store the flag and check
1833 * on completion. For cmds with this flag, don't call
1834 * megasas_complete_cmd
1835 */
1836
1837 if (frame_hdr->flags & MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)
1838 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
1839
1840 fusion = instance->ctrl_context;
1841 io_req = cmd->io_request;
1842 mpi25_ieee_chain =
1843 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
1844
1845 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
1846 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
1847 SGL) / 4;
1848 io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
1849
1850 mpi25_ieee_chain->Address = mfi_cmd->frame_phys_addr;
1851
1852 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1853 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
1854
1855 mpi25_ieee_chain->Length = MEGASAS_MAX_SZ_CHAIN_FRAME;
1856
1857 return 0;
1858}
1859
1860/**
1861 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
1862 * @instance: Adapter soft state
1863 * @cmd: mfi cmd to build
1864 *
1865 */
1866union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1867build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
1868{
1869 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1870 u16 index;
1871
1872 if (build_mpt_mfi_pass_thru(instance, cmd)) {
1873 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
1874 return NULL;
1875 }
1876
1877 index = cmd->context.smid;
1878
1879 req_desc = megasas_get_request_descriptor(instance, index - 1);
1880
1881 if (!req_desc)
1882 return NULL;
1883
1884 req_desc->Words = 0;
1885 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1886 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1887
1888 req_desc->SCSIIO.SMID = index;
1889
1890 return req_desc;
1891}
1892
1893/**
1894 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
1895 * @instance: Adapter soft state
1896 * @cmd: mfi cmd pointer
1897 *
1898 */
1899void
1900megasas_issue_dcmd_fusion(struct megasas_instance *instance,
1901 struct megasas_cmd *cmd)
1902{
1903 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1904 union desc_value d_val;
1905
1906 req_desc = build_mpt_cmd(instance, cmd);
1907 if (!req_desc) {
1908 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
1909 return;
1910 }
1911 d_val.word = req_desc->Words;
1912
1913 instance->instancet->fire_cmd(instance, req_desc->u.low,
1914 req_desc->u.high, instance->reg_set);
1915}
1916
1917/**
1918 * megasas_release_fusion - Reverses the FW initialization
1919 * @intance: Adapter soft state
1920 */
1921void
1922megasas_release_fusion(struct megasas_instance *instance)
1923{
1924 megasas_free_cmds(instance);
1925 megasas_free_cmds_fusion(instance);
1926
1927 iounmap(instance->reg_set);
1928
1929 pci_release_selected_regions(instance->pdev, instance->bar);
1930}
1931
1932/**
1933 * megasas_read_fw_status_reg_fusion - returns the current FW status value
1934 * @regs: MFI register set
1935 */
1936static u32
1937megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
1938{
1939 return readl(&(regs)->outbound_scratch_pad);
1940}
1941
1942/**
1943 * megasas_adp_reset_fusion - For controller reset
1944 * @regs: MFI register set
1945 */
1946static int
1947megasas_adp_reset_fusion(struct megasas_instance *instance,
1948 struct megasas_register_set __iomem *regs)
1949{
1950 return 0;
1951}
1952
1953/**
1954 * megasas_check_reset_fusion - For controller reset check
1955 * @regs: MFI register set
1956 */
1957static int
1958megasas_check_reset_fusion(struct megasas_instance *instance,
1959 struct megasas_register_set __iomem *regs)
1960{
1961 return 0;
1962}
1963
1964/* This function waits for outstanding commands on fusion to complete */
1965int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance)
1966{
1967 int i, outstanding, retval = 0;
1968 u32 fw_state, wait_time = MEGASAS_RESET_WAIT_TIME;
1969
1970 for (i = 0; i < wait_time; i++) {
1971 /* Check if firmware is in fault state */
1972 fw_state = instance->instancet->read_fw_status_reg(
1973 instance->reg_set) & MFI_STATE_MASK;
1974 if (fw_state == MFI_STATE_FAULT) {
1975 printk(KERN_WARNING "megasas: Found FW in FAULT state,"
1976 " will reset adapter.\n");
1977 retval = 1;
1978 goto out;
1979 }
1980
1981 outstanding = atomic_read(&instance->fw_outstanding);
1982 if (!outstanding)
1983 goto out;
1984
1985 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1986 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1987 "commands to complete\n", i, outstanding);
1988 megasas_complete_cmd_dpc_fusion(
1989 (unsigned long)instance);
1990 }
1991 msleep(1000);
1992 }
1993
1994 if (atomic_read(&instance->fw_outstanding)) {
1995 printk("megaraid_sas: pending commands remain after waiting, "
1996 "will reset adapter.\n");
1997 retval = 1;
1998 }
1999out:
2000 return retval;
2001}
2002
2003void megasas_reset_reply_desc(struct megasas_instance *instance)
2004{
2005 int i;
2006 struct fusion_context *fusion;
2007 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2008
2009 fusion = instance->ctrl_context;
2010 fusion->last_reply_idx = 0;
2011 reply_desc = fusion->reply_frames_desc;
2012 for (i = 0 ; i < fusion->reply_q_depth; i++, reply_desc++)
2013 reply_desc->Words = ULLONG_MAX;
2014}
2015
2016/* Core fusion reset function */
2017int megasas_reset_fusion(struct Scsi_Host *shost)
2018{
2019 int retval = SUCCESS, i, j, retry = 0;
2020 struct megasas_instance *instance;
2021 struct megasas_cmd_fusion *cmd_fusion;
2022 struct fusion_context *fusion;
2023 struct megasas_cmd *cmd_mfi;
2024 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2025 u32 host_diag, abs_state;
2026
2027 instance = (struct megasas_instance *)shost->hostdata;
2028 fusion = instance->ctrl_context;
2029
2030 mutex_lock(&instance->reset_mutex);
2031 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2032 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2033 instance->instancet->disable_intr(instance->reg_set);
2034 msleep(1000);
2035
2036 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2037 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2038 "returning FAILED.\n");
2039 retval = FAILED;
2040 goto out;
2041 }
2042
2043 /* First try waiting for commands to complete */
2044 if (megasas_wait_for_outstanding_fusion(instance)) {
2045 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2046 "adapter.\n");
2047 /* Now return commands back to the OS */
2048 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2049 cmd_fusion = fusion->cmd_list[i];
2050 if (cmd_fusion->scmd) {
2051 scsi_dma_unmap(cmd_fusion->scmd);
2052 cmd_fusion->scmd->result = (DID_RESET << 16);
2053 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2054 megasas_return_cmd_fusion(instance, cmd_fusion);
2055 atomic_dec(&instance->fw_outstanding);
2056 }
2057 }
2058
2059 if (instance->disableOnlineCtrlReset == 1) {
2060 /* Reset not supported, kill adapter */
2061 printk(KERN_WARNING "megaraid_sas: Reset not supported"
2062 ", killing adapter.\n");
2063 megaraid_sas_kill_hba(instance);
2064 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2065 retval = FAILED;
2066 goto out;
2067 }
2068
2069 /* Now try to reset the chip */
2070 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2071 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2072 &instance->reg_set->fusion_seq_offset);
2073 writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2074 &instance->reg_set->fusion_seq_offset);
2075 writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2076 &instance->reg_set->fusion_seq_offset);
2077 writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2078 &instance->reg_set->fusion_seq_offset);
2079 writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2080 &instance->reg_set->fusion_seq_offset);
2081 writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2082 &instance->reg_set->fusion_seq_offset);
2083 writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2084 &instance->reg_set->fusion_seq_offset);
2085
2086 /* Check that the diag write enable (DRWE) bit is on */
2087 host_diag = readl(&instance->reg_set->fusion_host_diag);
2088 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2089 msleep(100);
2090 host_diag =
2091 readl(&instance->reg_set->fusion_host_diag);
2092 if (retry++ == 100) {
2093 printk(KERN_WARNING "megaraid_sas: "
2094 "Host diag unlock failed!\n");
2095 break;
2096 }
2097 }
2098 if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2099 continue;
2100
2101 /* Send chip reset command */
2102 writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2103 &instance->reg_set->fusion_host_diag);
2104 msleep(3000);
2105
2106 /* Make sure reset adapter bit is cleared */
2107 host_diag = readl(&instance->reg_set->fusion_host_diag);
2108 retry = 0;
2109 while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2110 msleep(100);
2111 host_diag =
2112 readl(&instance->reg_set->fusion_host_diag);
2113 if (retry++ == 1000) {
2114 printk(KERN_WARNING "megaraid_sas: "
2115 "Diag reset adapter never "
2116 "cleared!\n");
2117 break;
2118 }
2119 }
2120 if (host_diag & HOST_DIAG_RESET_ADAPTER)
2121 continue;
2122
2123 abs_state =
2124 instance->instancet->read_fw_status_reg(
2125 instance->reg_set);
2126 retry = 0;
2127
2128 while ((abs_state <= MFI_STATE_FW_INIT) &&
2129 (retry++ < 1000)) {
2130 msleep(100);
2131 abs_state =
2132 instance->instancet->read_fw_status_reg(
2133 instance->reg_set);
2134 }
2135 if (abs_state <= MFI_STATE_FW_INIT) {
2136 printk(KERN_WARNING "megaraid_sas: firmware "
2137 "state < MFI_STATE_FW_INIT, state = "
2138 "0x%x\n", abs_state);
2139 continue;
2140 }
2141
2142 /* Wait for FW to become ready */
2143 if (megasas_transition_to_ready(instance)) {
2144 printk(KERN_WARNING "megaraid_sas: Failed to "
2145 "transition controller to ready.\n");
2146 continue;
2147 }
2148
2149 megasas_reset_reply_desc(instance);
2150 if (megasas_ioc_init_fusion(instance)) {
2151 printk(KERN_WARNING "megaraid_sas: "
2152 "megasas_ioc_init_fusion() failed!\n");
2153 continue;
2154 }
2155
2156 instance->instancet->enable_intr(instance->reg_set);
2157 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2158
2159 /* Re-fire management commands */
2160 for (j = 0 ; j < instance->max_fw_cmds; j++) {
2161 cmd_fusion = fusion->cmd_list[j];
2162 if (cmd_fusion->sync_cmd_idx !=
2163 (u32)ULONG_MAX) {
2164 cmd_mfi =
2165 instance->
2166 cmd_list[cmd_fusion->sync_cmd_idx];
2167 if (cmd_mfi->frame->dcmd.opcode ==
2168 MR_DCMD_LD_MAP_GET_INFO) {
2169 megasas_return_cmd(instance,
2170 cmd_mfi);
2171 megasas_return_cmd_fusion(
2172 instance, cmd_fusion);
2173 } else {
2174 req_desc =
2175 megasas_get_request_descriptor(
2176 instance,
2177 cmd_mfi->context.smid
2178 -1);
2179 if (!req_desc)
2180 printk(KERN_WARNING
2181 "req_desc NULL"
2182 "\n");
2183 else {
2184 instance->instancet->
2185 fire_cmd(instance,
2186 req_desc->
2187 u.low,
2188 req_desc->
2189 u.high,
2190 instance->
2191 reg_set);
2192 }
2193 }
2194 }
2195 }
2196
2197 /* Reset load balance info */
2198 memset(fusion->load_balance_info, 0,
2199 sizeof(struct LD_LOAD_BALANCE_INFO)
2200 *MAX_LOGICAL_DRIVES);
2201
2202 if (!megasas_get_map_info(instance))
2203 megasas_sync_map_info(instance);
2204
2205 /* Adapter reset completed successfully */
2206 printk(KERN_WARNING "megaraid_sas: Reset "
2207 "successful.\n");
2208 retval = SUCCESS;
2209 goto out;
2210 }
2211 /* Reset failed, kill the adapter */
2212 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2213 "adapter.\n");
2214 megaraid_sas_kill_hba(instance);
2215 retval = FAILED;
2216 } else {
2217 instance->instancet->enable_intr(instance->reg_set);
2218 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2219 }
2220out:
2221 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2222 mutex_unlock(&instance->reset_mutex);
2223 return retval;
2224}
2225
2226/* Fusion OCR work queue */
2227void megasas_fusion_ocr_wq(struct work_struct *work)
2228{
2229 struct megasas_instance *instance =
2230 container_of(work, struct megasas_instance, work_init);
2231
2232 megasas_reset_fusion(instance->host);
2233}
2234
2235struct megasas_instance_template megasas_instance_template_fusion = {
2236 .fire_cmd = megasas_fire_cmd_fusion,
2237 .enable_intr = megasas_enable_intr_fusion,
2238 .disable_intr = megasas_disable_intr_fusion,
2239 .clear_intr = megasas_clear_intr_fusion,
2240 .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
2241 .adp_reset = megasas_adp_reset_fusion,
2242 .check_reset = megasas_check_reset_fusion,
2243 .service_isr = megasas_isr_fusion,
2244 .tasklet = megasas_complete_cmd_dpc_fusion,
2245 .init_adapter = megasas_init_adapter_fusion,
2246 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
2247 .issue_dcmd = megasas_issue_dcmd_fusion,
2248};
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
new file mode 100644
index 000000000000..82b577a72c8b
--- /dev/null
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -0,0 +1,695 @@
1/*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2011 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_fusion.h
21 *
22 * Authors: LSI Corporation
23 * Manoj Jose
24 * Sumant Patro
25 *
26 * Send feedback to: <megaraidlinux@lsi.com>
27 *
28 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
29 * ATTN: Linuxraid
30 */
31
32#ifndef _MEGARAID_SAS_FUSION_H_
33#define _MEGARAID_SAS_FUSION_H_
34
35/* Fusion defines */
36#define MEGASAS_MAX_SZ_CHAIN_FRAME 1024
37#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009)
38#define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256
39#define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST 0xF0
40#define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST 0xF1
41#define MEGASAS_LOAD_BALANCE_FLAG 0x1
42#define MEGASAS_DCMD_MBOX_PEND_FLAG 0x1
43#define HOST_DIAG_WRITE_ENABLE 0x80
44#define HOST_DIAG_RESET_ADAPTER 0x4
45#define MEGASAS_FUSION_MAX_RESET_TRIES 3
46
47/* T10 PI defines */
48#define MR_PROT_INFO_TYPE_CONTROLLER 0x8
49#define MEGASAS_SCSI_VARIABLE_LENGTH_CMD 0x7f
50#define MEGASAS_SCSI_SERVICE_ACTION_READ32 0x9
51#define MEGASAS_SCSI_SERVICE_ACTION_WRITE32 0xB
52#define MEGASAS_SCSI_ADDL_CDB_LEN 0x18
53#define MEGASAS_RD_WR_PROTECT_CHECK_ALL 0x20
54#define MEGASAS_RD_WR_PROTECT_CHECK_NONE 0x60
55#define MEGASAS_EEDPBLOCKSIZE 512
56
57/*
58 * Raid context flags
59 */
60
61#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT 0x4
62#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_MASK 0x30
63enum MR_RAID_FLAGS_IO_SUB_TYPE {
64 MR_RAID_FLAGS_IO_SUB_TYPE_NONE = 0,
65 MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD = 1,
66};
67
68/*
69 * Request descriptor types
70 */
71#define MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 0x7
72#define MEGASAS_REQ_DESCRIPT_FLAGS_MFA 0x1
73
74#define MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT 1
75
76#define MEGASAS_FP_CMD_LEN 16
77#define MEGASAS_FUSION_IN_RESET 0
78
79/*
80 * Raid Context structure which describes MegaRAID specific IO Paramenters
81 * This resides at offset 0x60 where the SGL normally starts in MPT IO Frames
82 */
83
84struct RAID_CONTEXT {
85 u16 resvd0;
86 u16 timeoutValue;
87 u8 regLockFlags;
88 u8 resvd1;
89 u16 VirtualDiskTgtId;
90 u64 regLockRowLBA;
91 u32 regLockLength;
92 u16 nextLMId;
93 u8 exStatus;
94 u8 status;
95 u8 RAIDFlags;
96 u8 numSGE;
97 u16 configSeqNum;
98 u8 spanArm;
99 u8 resvd2[3];
100};
101
102#define RAID_CTX_SPANARM_ARM_SHIFT (0)
103#define RAID_CTX_SPANARM_ARM_MASK (0x1f)
104
105#define RAID_CTX_SPANARM_SPAN_SHIFT (5)
106#define RAID_CTX_SPANARM_SPAN_MASK (0xE0)
107
108/*
109 * define region lock types
110 */
111enum REGION_TYPE {
112 REGION_TYPE_UNUSED = 0,
113 REGION_TYPE_SHARED_READ = 1,
114 REGION_TYPE_SHARED_WRITE = 2,
115 REGION_TYPE_EXCLUSIVE = 3,
116};
117
118/* MPI2 defines */
119#define MPI2_FUNCTION_IOC_INIT (0x02) /* IOC Init */
120#define MPI2_WHOINIT_HOST_DRIVER (0x04)
121#define MPI2_VERSION_MAJOR (0x02)
122#define MPI2_VERSION_MINOR (0x00)
123#define MPI2_VERSION_MAJOR_MASK (0xFF00)
124#define MPI2_VERSION_MAJOR_SHIFT (8)
125#define MPI2_VERSION_MINOR_MASK (0x00FF)
126#define MPI2_VERSION_MINOR_SHIFT (0)
127#define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) | \
128 MPI2_VERSION_MINOR)
129#define MPI2_HEADER_VERSION_UNIT (0x10)
130#define MPI2_HEADER_VERSION_DEV (0x00)
131#define MPI2_HEADER_VERSION_UNIT_MASK (0xFF00)
132#define MPI2_HEADER_VERSION_UNIT_SHIFT (8)
133#define MPI2_HEADER_VERSION_DEV_MASK (0x00FF)
134#define MPI2_HEADER_VERSION_DEV_SHIFT (0)
135#define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | \
136 MPI2_HEADER_VERSION_DEV)
137#define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03)
138#define MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG (0x8000)
139#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG (0x0400)
140#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP (0x0003)
141#define MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG (0x0200)
142#define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD (0x0100)
143#define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP (0x0004)
144#define MPI2_FUNCTION_SCSI_IO_REQUEST (0x00) /* SCSI IO */
145#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x06)
146#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO (0x00)
147#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING (0x02)
148#define MPI2_SCSIIO_CONTROL_WRITE (0x01000000)
149#define MPI2_SCSIIO_CONTROL_READ (0x02000000)
150#define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK (0x0E)
151#define MPI2_RPY_DESCRIPT_FLAGS_UNUSED (0x0F)
152#define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS (0x00)
153#define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK (0x0F)
154#define MPI2_WRSEQ_FLUSH_KEY_VALUE (0x0)
155#define MPI2_WRITE_SEQUENCE_OFFSET (0x00000004)
156#define MPI2_WRSEQ_1ST_KEY_VALUE (0xF)
157#define MPI2_WRSEQ_2ND_KEY_VALUE (0x4)
158#define MPI2_WRSEQ_3RD_KEY_VALUE (0xB)
159#define MPI2_WRSEQ_4TH_KEY_VALUE (0x2)
160#define MPI2_WRSEQ_5TH_KEY_VALUE (0x7)
161#define MPI2_WRSEQ_6TH_KEY_VALUE (0xD)
162
163struct MPI25_IEEE_SGE_CHAIN64 {
164 u64 Address;
165 u32 Length;
166 u16 Reserved1;
167 u8 NextChainOffset;
168 u8 Flags;
169};
170
171struct MPI2_SGE_SIMPLE_UNION {
172 u32 FlagsLength;
173 union {
174 u32 Address32;
175 u64 Address64;
176 } u;
177};
178
179struct MPI2_SCSI_IO_CDB_EEDP32 {
180 u8 CDB[20]; /* 0x00 */
181 u32 PrimaryReferenceTag; /* 0x14 */
182 u16 PrimaryApplicationTag; /* 0x18 */
183 u16 PrimaryApplicationTagMask; /* 0x1A */
184 u32 TransferLength; /* 0x1C */
185};
186
187struct MPI2_SGE_CHAIN_UNION {
188 u16 Length;
189 u8 NextChainOffset;
190 u8 Flags;
191 union {
192 u32 Address32;
193 u64 Address64;
194 } u;
195};
196
197struct MPI2_IEEE_SGE_SIMPLE32 {
198 u32 Address;
199 u32 FlagsLength;
200};
201
202struct MPI2_IEEE_SGE_CHAIN32 {
203 u32 Address;
204 u32 FlagsLength;
205};
206
207struct MPI2_IEEE_SGE_SIMPLE64 {
208 u64 Address;
209 u32 Length;
210 u16 Reserved1;
211 u8 Reserved2;
212 u8 Flags;
213};
214
215struct MPI2_IEEE_SGE_CHAIN64 {
216 u64 Address;
217 u32 Length;
218 u16 Reserved1;
219 u8 Reserved2;
220 u8 Flags;
221};
222
223union MPI2_IEEE_SGE_SIMPLE_UNION {
224 struct MPI2_IEEE_SGE_SIMPLE32 Simple32;
225 struct MPI2_IEEE_SGE_SIMPLE64 Simple64;
226};
227
228union MPI2_IEEE_SGE_CHAIN_UNION {
229 struct MPI2_IEEE_SGE_CHAIN32 Chain32;
230 struct MPI2_IEEE_SGE_CHAIN64 Chain64;
231};
232
233union MPI2_SGE_IO_UNION {
234 struct MPI2_SGE_SIMPLE_UNION MpiSimple;
235 struct MPI2_SGE_CHAIN_UNION MpiChain;
236 union MPI2_IEEE_SGE_SIMPLE_UNION IeeeSimple;
237 union MPI2_IEEE_SGE_CHAIN_UNION IeeeChain;
238};
239
240union MPI2_SCSI_IO_CDB_UNION {
241 u8 CDB32[32];
242 struct MPI2_SCSI_IO_CDB_EEDP32 EEDP32;
243 struct MPI2_SGE_SIMPLE_UNION SGE;
244};
245
246/*
247 * RAID SCSI IO Request Message
248 * Total SGE count will be one less than _MPI2_SCSI_IO_REQUEST
249 */
250struct MPI2_RAID_SCSI_IO_REQUEST {
251 u16 DevHandle; /* 0x00 */
252 u8 ChainOffset; /* 0x02 */
253 u8 Function; /* 0x03 */
254 u16 Reserved1; /* 0x04 */
255 u8 Reserved2; /* 0x06 */
256 u8 MsgFlags; /* 0x07 */
257 u8 VP_ID; /* 0x08 */
258 u8 VF_ID; /* 0x09 */
259 u16 Reserved3; /* 0x0A */
260 u32 SenseBufferLowAddress; /* 0x0C */
261 u16 SGLFlags; /* 0x10 */
262 u8 SenseBufferLength; /* 0x12 */
263 u8 Reserved4; /* 0x13 */
264 u8 SGLOffset0; /* 0x14 */
265 u8 SGLOffset1; /* 0x15 */
266 u8 SGLOffset2; /* 0x16 */
267 u8 SGLOffset3; /* 0x17 */
268 u32 SkipCount; /* 0x18 */
269 u32 DataLength; /* 0x1C */
270 u32 BidirectionalDataLength; /* 0x20 */
271 u16 IoFlags; /* 0x24 */
272 u16 EEDPFlags; /* 0x26 */
273 u32 EEDPBlockSize; /* 0x28 */
274 u32 SecondaryReferenceTag; /* 0x2C */
275 u16 SecondaryApplicationTag; /* 0x30 */
276 u16 ApplicationTagTranslationMask; /* 0x32 */
277 u8 LUN[8]; /* 0x34 */
278 u32 Control; /* 0x3C */
279 union MPI2_SCSI_IO_CDB_UNION CDB; /* 0x40 */
280 struct RAID_CONTEXT RaidContext; /* 0x60 */
281 union MPI2_SGE_IO_UNION SGL; /* 0x80 */
282};
283
284/*
285 * MPT RAID MFA IO Descriptor.
286 */
287struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR {
288 u32 RequestFlags:8;
289 u32 MessageAddress1:24; /* bits 31:8*/
290 u32 MessageAddress2; /* bits 61:32 */
291};
292
293/* Default Request Descriptor */
294struct MPI2_DEFAULT_REQUEST_DESCRIPTOR {
295 u8 RequestFlags; /* 0x00 */
296 u8 MSIxIndex; /* 0x01 */
297 u16 SMID; /* 0x02 */
298 u16 LMID; /* 0x04 */
299 u16 DescriptorTypeDependent; /* 0x06 */
300};
301
302/* High Priority Request Descriptor */
303struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR {
304 u8 RequestFlags; /* 0x00 */
305 u8 MSIxIndex; /* 0x01 */
306 u16 SMID; /* 0x02 */
307 u16 LMID; /* 0x04 */
308 u16 Reserved1; /* 0x06 */
309};
310
311/* SCSI IO Request Descriptor */
312struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR {
313 u8 RequestFlags; /* 0x00 */
314 u8 MSIxIndex; /* 0x01 */
315 u16 SMID; /* 0x02 */
316 u16 LMID; /* 0x04 */
317 u16 DevHandle; /* 0x06 */
318};
319
320/* SCSI Target Request Descriptor */
321struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR {
322 u8 RequestFlags; /* 0x00 */
323 u8 MSIxIndex; /* 0x01 */
324 u16 SMID; /* 0x02 */
325 u16 LMID; /* 0x04 */
326 u16 IoIndex; /* 0x06 */
327};
328
329/* RAID Accelerator Request Descriptor */
330struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR {
331 u8 RequestFlags; /* 0x00 */
332 u8 MSIxIndex; /* 0x01 */
333 u16 SMID; /* 0x02 */
334 u16 LMID; /* 0x04 */
335 u16 Reserved; /* 0x06 */
336};
337
338/* union of Request Descriptors */
339union MEGASAS_REQUEST_DESCRIPTOR_UNION {
340 struct MPI2_DEFAULT_REQUEST_DESCRIPTOR Default;
341 struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR HighPriority;
342 struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR SCSIIO;
343 struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR SCSITarget;
344 struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR RAIDAccelerator;
345 struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR MFAIo;
346 union {
347 struct {
348 u32 low;
349 u32 high;
350 } u;
351 u64 Words;
352 };
353};
354
355/* Default Reply Descriptor */
356struct MPI2_DEFAULT_REPLY_DESCRIPTOR {
357 u8 ReplyFlags; /* 0x00 */
358 u8 MSIxIndex; /* 0x01 */
359 u16 DescriptorTypeDependent1; /* 0x02 */
360 u32 DescriptorTypeDependent2; /* 0x04 */
361};
362
363/* Address Reply Descriptor */
364struct MPI2_ADDRESS_REPLY_DESCRIPTOR {
365 u8 ReplyFlags; /* 0x00 */
366 u8 MSIxIndex; /* 0x01 */
367 u16 SMID; /* 0x02 */
368 u32 ReplyFrameAddress; /* 0x04 */
369};
370
371/* SCSI IO Success Reply Descriptor */
372struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR {
373 u8 ReplyFlags; /* 0x00 */
374 u8 MSIxIndex; /* 0x01 */
375 u16 SMID; /* 0x02 */
376 u16 TaskTag; /* 0x04 */
377 u16 Reserved1; /* 0x06 */
378};
379
380/* TargetAssist Success Reply Descriptor */
381struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR {
382 u8 ReplyFlags; /* 0x00 */
383 u8 MSIxIndex; /* 0x01 */
384 u16 SMID; /* 0x02 */
385 u8 SequenceNumber; /* 0x04 */
386 u8 Reserved1; /* 0x05 */
387 u16 IoIndex; /* 0x06 */
388};
389
390/* Target Command Buffer Reply Descriptor */
391struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR {
392 u8 ReplyFlags; /* 0x00 */
393 u8 MSIxIndex; /* 0x01 */
394 u8 VP_ID; /* 0x02 */
395 u8 Flags; /* 0x03 */
396 u16 InitiatorDevHandle; /* 0x04 */
397 u16 IoIndex; /* 0x06 */
398};
399
400/* RAID Accelerator Success Reply Descriptor */
401struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR {
402 u8 ReplyFlags; /* 0x00 */
403 u8 MSIxIndex; /* 0x01 */
404 u16 SMID; /* 0x02 */
405 u32 Reserved; /* 0x04 */
406};
407
408/* union of Reply Descriptors */
409union MPI2_REPLY_DESCRIPTORS_UNION {
410 struct MPI2_DEFAULT_REPLY_DESCRIPTOR Default;
411 struct MPI2_ADDRESS_REPLY_DESCRIPTOR AddressReply;
412 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR SCSIIOSuccess;
413 struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR TargetAssistSuccess;
414 struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR TargetCommandBuffer;
415 struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR
416 RAIDAcceleratorSuccess;
417 u64 Words;
418};
419
420/* IOCInit Request message */
421struct MPI2_IOC_INIT_REQUEST {
422 u8 WhoInit; /* 0x00 */
423 u8 Reserved1; /* 0x01 */
424 u8 ChainOffset; /* 0x02 */
425 u8 Function; /* 0x03 */
426 u16 Reserved2; /* 0x04 */
427 u8 Reserved3; /* 0x06 */
428 u8 MsgFlags; /* 0x07 */
429 u8 VP_ID; /* 0x08 */
430 u8 VF_ID; /* 0x09 */
431 u16 Reserved4; /* 0x0A */
432 u16 MsgVersion; /* 0x0C */
433 u16 HeaderVersion; /* 0x0E */
434 u32 Reserved5; /* 0x10 */
435 u16 Reserved6; /* 0x14 */
436 u8 Reserved7; /* 0x16 */
437 u8 HostMSIxVectors; /* 0x17 */
438 u16 Reserved8; /* 0x18 */
439 u16 SystemRequestFrameSize; /* 0x1A */
440 u16 ReplyDescriptorPostQueueDepth; /* 0x1C */
441 u16 ReplyFreeQueueDepth; /* 0x1E */
442 u32 SenseBufferAddressHigh; /* 0x20 */
443 u32 SystemReplyAddressHigh; /* 0x24 */
444 u64 SystemRequestFrameBaseAddress; /* 0x28 */
445 u64 ReplyDescriptorPostQueueAddress;/* 0x30 */
446 u64 ReplyFreeQueueAddress; /* 0x38 */
447 u64 TimeStamp; /* 0x40 */
448};
449
450/* mrpriv defines */
451#define MR_PD_INVALID 0xFFFF
452#define MAX_SPAN_DEPTH 8
453#define MAX_RAIDMAP_SPAN_DEPTH (MAX_SPAN_DEPTH)
454#define MAX_ROW_SIZE 32
455#define MAX_RAIDMAP_ROW_SIZE (MAX_ROW_SIZE)
456#define MAX_LOGICAL_DRIVES 64
457#define MAX_RAIDMAP_LOGICAL_DRIVES (MAX_LOGICAL_DRIVES)
458#define MAX_RAIDMAP_VIEWS (MAX_LOGICAL_DRIVES)
459#define MAX_ARRAYS 128
460#define MAX_RAIDMAP_ARRAYS (MAX_ARRAYS)
461#define MAX_PHYSICAL_DEVICES 256
462#define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES)
463#define MR_DCMD_LD_MAP_GET_INFO 0x0300e101
464
465struct MR_DEV_HANDLE_INFO {
466 u16 curDevHdl;
467 u8 validHandles;
468 u8 reserved;
469 u16 devHandle[2];
470};
471
472struct MR_ARRAY_INFO {
473 u16 pd[MAX_RAIDMAP_ROW_SIZE];
474};
475
476struct MR_QUAD_ELEMENT {
477 u64 logStart;
478 u64 logEnd;
479 u64 offsetInSpan;
480 u32 diff;
481 u32 reserved1;
482};
483
484struct MR_SPAN_INFO {
485 u32 noElements;
486 u32 reserved1;
487 struct MR_QUAD_ELEMENT quad[MAX_RAIDMAP_SPAN_DEPTH];
488};
489
490struct MR_LD_SPAN {
491 u64 startBlk;
492 u64 numBlks;
493 u16 arrayRef;
494 u8 reserved[6];
495};
496
497struct MR_SPAN_BLOCK_INFO {
498 u64 num_rows;
499 struct MR_LD_SPAN span;
500 struct MR_SPAN_INFO block_span_info;
501};
502
503struct MR_LD_RAID {
504 struct {
505 u32 fpCapable:1;
506 u32 reserved5:3;
507 u32 ldPiMode:4;
508 u32 pdPiMode:4;
509 u32 encryptionType:8;
510 u32 fpWriteCapable:1;
511 u32 fpReadCapable:1;
512 u32 fpWriteAcrossStripe:1;
513 u32 fpReadAcrossStripe:1;
514 u32 reserved4:8;
515 } capability;
516 u32 reserved6;
517 u64 size;
518 u8 spanDepth;
519 u8 level;
520 u8 stripeShift;
521 u8 rowSize;
522 u8 rowDataSize;
523 u8 writeMode;
524 u8 PRL;
525 u8 SRL;
526 u16 targetId;
527 u8 ldState;
528 u8 regTypeReqOnWrite;
529 u8 modFactor;
530 u8 reserved2[1];
531 u16 seqNum;
532
533 struct {
534 u32 ldSyncRequired:1;
535 u32 reserved:31;
536 } flags;
537
538 u8 reserved3[0x5C];
539};
540
541struct MR_LD_SPAN_MAP {
542 struct MR_LD_RAID ldRaid;
543 u8 dataArmMap[MAX_RAIDMAP_ROW_SIZE];
544 struct MR_SPAN_BLOCK_INFO spanBlock[MAX_RAIDMAP_SPAN_DEPTH];
545};
546
547struct MR_FW_RAID_MAP {
548 u32 totalSize;
549 union {
550 struct {
551 u32 maxLd;
552 u32 maxSpanDepth;
553 u32 maxRowSize;
554 u32 maxPdCount;
555 u32 maxArrays;
556 } validationInfo;
557 u32 version[5];
558 u32 reserved1[5];
559 };
560
561 u32 ldCount;
562 u32 Reserved1;
563 u8 ldTgtIdToLd[MAX_RAIDMAP_LOGICAL_DRIVES+
564 MAX_RAIDMAP_VIEWS];
565 u8 fpPdIoTimeoutSec;
566 u8 reserved2[7];
567 struct MR_ARRAY_INFO arMapInfo[MAX_RAIDMAP_ARRAYS];
568 struct MR_DEV_HANDLE_INFO devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES];
569 struct MR_LD_SPAN_MAP ldSpanMap[1];
570};
571
572struct IO_REQUEST_INFO {
573 u64 ldStartBlock;
574 u32 numBlocks;
575 u16 ldTgtId;
576 u8 isRead;
577 u16 devHandle;
578 u64 pdBlock;
579 u8 fpOkForIo;
580};
581
582struct MR_LD_TARGET_SYNC {
583 u8 targetId;
584 u8 reserved;
585 u16 seqNum;
586};
587
588#define IEEE_SGE_FLAGS_ADDR_MASK (0x03)
589#define IEEE_SGE_FLAGS_SYSTEM_ADDR (0x00)
590#define IEEE_SGE_FLAGS_IOCDDR_ADDR (0x01)
591#define IEEE_SGE_FLAGS_IOCPLB_ADDR (0x02)
592#define IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03)
593#define IEEE_SGE_FLAGS_CHAIN_ELEMENT (0x80)
594#define IEEE_SGE_FLAGS_END_OF_LIST (0x40)
595
596struct megasas_register_set;
597struct megasas_instance;
598
599union desc_word {
600 u64 word;
601 struct {
602 u32 low;
603 u32 high;
604 } u;
605};
606
607struct megasas_cmd_fusion {
608 struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
609 dma_addr_t io_request_phys_addr;
610
611 union MPI2_SGE_IO_UNION *sg_frame;
612 dma_addr_t sg_frame_phys_addr;
613
614 u8 *sense;
615 dma_addr_t sense_phys_addr;
616
617 struct list_head list;
618 struct scsi_cmnd *scmd;
619 struct megasas_instance *instance;
620
621 u8 retry_for_fw_reset;
622 union MEGASAS_REQUEST_DESCRIPTOR_UNION *request_desc;
623
624 /*
625 * Context for a MFI frame.
626 * Used to get the mfi cmd from list when a MFI cmd is completed
627 */
628 u32 sync_cmd_idx;
629 u32 index;
630 u8 flags;
631};
632
633struct LD_LOAD_BALANCE_INFO {
634 u8 loadBalanceFlag;
635 u8 reserved1;
636 u16 raid1DevHandle[2];
637 atomic_t scsi_pending_cmds[2];
638 u64 last_accessed_block[2];
639};
640
641struct MR_FW_RAID_MAP_ALL {
642 struct MR_FW_RAID_MAP raidMap;
643 struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1];
644} __attribute__ ((packed));
645
646struct fusion_context {
647 struct megasas_cmd_fusion **cmd_list;
648 struct list_head cmd_pool;
649
650 spinlock_t cmd_pool_lock;
651
652 dma_addr_t req_frames_desc_phys;
653 u8 *req_frames_desc;
654
655 struct dma_pool *io_request_frames_pool;
656 dma_addr_t io_request_frames_phys;
657 u8 *io_request_frames;
658
659 struct dma_pool *sg_dma_pool;
660 struct dma_pool *sense_dma_pool;
661
662 dma_addr_t reply_frames_desc_phys;
663 union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc;
664 struct dma_pool *reply_frames_desc_pool;
665
666 u16 last_reply_idx;
667
668 u32 reply_q_depth;
669 u32 request_alloc_sz;
670 u32 reply_alloc_sz;
671 u32 io_frames_alloc_sz;
672
673 u16 max_sge_in_main_msg;
674 u16 max_sge_in_chain;
675
676 u8 chain_offset_io_request;
677 u8 chain_offset_mfi_pthru;
678
679 struct MR_FW_RAID_MAP_ALL *ld_map[2];
680 dma_addr_t ld_map_phys[2];
681
682 u32 map_sz;
683 u8 fast_path_io;
684 struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES];
685};
686
687union desc_value {
688 u64 word;
689 struct {
690 u32 low;
691 u32 high;
692 } u;
693};
694
695#endif /* _MEGARAID_SAS_FUSION_H_ */
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