Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754567AbZIUCif (ORCPT ); Sun, 20 Sep 2009 22:38:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754069AbZIUCie (ORCPT ); Sun, 20 Sep 2009 22:38:34 -0400 Received: from na3sys009aog112.obsmtp.com ([74.125.149.207]:37047 "EHLO na3sys009aog112.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754018AbZIUCic convert rfc822-to-8bit (ORCPT ); Sun, 20 Sep 2009 22:38:32 -0400 From: "Yang, Bo" To: "Yang, Bo" , "linux-scsi@vger.kernel.org" , "akpm@osdl.org" , "linux-kernel@vger.kernel.org" , "James.Bottomley@HansenPartnership.com" , "James.Bottomley@suse.de" Date: Sun, 20 Sep 2009 20:38:08 -0600 Subject: [PATCH 4/12] scsi: megaraid_sas - Add new megaraid SAS 2 controller support to the driver Thread-Topic: [PATCH 4/12] scsi: megaraid_sas - Add new megaraid SAS 2 controller support to the driver Thread-Index: Aco284muq21jjlUCRvWfDnAhnowdBQAABfzAAAAxetAA2/ywMA== Message-ID: <4B6A08C587958942AA3002690DD4F8C35C5123FF@cosmail02.lsi.com> In-Reply-To: <4B6A08C587958942AA3002690DD4F8C35C511977@cosmail02.lsi.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 9561 Lines: 225 Add the new megaraid sas 2 controller to the driver. megaraid sas2 is LSI next generation SAS products. driver add the interface to support this product. Signed-off-by Bo Yang --- drivers/scsi/megaraid/megaraid_sas.c | 139 +++++++++++++++++++++++++++++++++-- drivers/scsi/megaraid/megaraid_sas.h | 4 + 2 files changed, 138 insertions(+), 5 deletions(-) diff -rupN linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.c linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.c --- linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.c 2009-09-13 10:17:15.000000000 -0400 +++ linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.c 2009-09-13 10:46:48.000000000 -0400 @@ -76,6 +76,10 @@ static struct pci_device_id megasas_pci_ /* gen2*/ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, + /* skinny*/ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, /* xscale IOP, vega */ {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, @@ -335,6 +339,99 @@ static struct megasas_instance_template }; /** + * megasas_enable_intr_skinny - Enables interrupts + * @regs: MFI register set + */ +static inline void +megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) +{ + writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); + + writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_skinny - Disables interrupt + * @regs: MFI register set + */ +static inline void +megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) +{ + u32 mask = 0xFFFFFFFF; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_skinny - returns the current FW status value + * @regs: MFI register set + */ +static u32 +megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) +{ + return readl(&(regs)->outbound_scratch_pad); +} + +/** + * megasas_clear_interrupt_skinny - Check & clear interrupt + * @regs: MFI register set + */ +static int +megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) +{ + u32 status; + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { + return 1; + } + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_intr_status); + + /* + * dummy read to flush PCI + */ + readl(®s->outbound_intr_status); + + return 0; +} + +/** + * megasas_fire_cmd_skinny - Sends command to the FW + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_skinny(dma_addr_t frame_phys_addr, u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + writel(0, &(regs)->inbound_high_queue_port); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_low_queue_port); +} + +static struct megasas_instance_template megasas_instance_template_skinny = { + + .fire_cmd = megasas_fire_cmd_skinny, + .enable_intr = megasas_enable_intr_skinny, + .disable_intr = megasas_disable_intr_skinny, + .clear_intr = megasas_clear_intr_skinny, + .read_fw_status_reg = megasas_read_fw_status_reg_skinny, +}; + + +/** * The following functions are defined for gen2 (deviceid : 0x78 0x79) * controllers */ @@ -1587,16 +1684,34 @@ megasas_transition_to_ready(struct megas /* * Set the CLR bit in inbound doorbell */ - writel(MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, - &instance->reg_set->inbound_doorbell); + if ((instance->pdev->device == \ + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->reserved_0[0]); + } else { + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + } max_wait = 2; cur_state = MFI_STATE_WAIT_HANDSHAKE; break; case MFI_STATE_BOOT_MESSAGE_PENDING: - writel(MFI_INIT_HOTPLUG, - &instance->reg_set->inbound_doorbell); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->reserved_0[0]); + } else + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); max_wait = 10; cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; @@ -1607,7 +1722,15 @@ megasas_transition_to_ready(struct megas * Bring it to READY state; assuming max wait 10 secs */ instance->instancet->disable_intr(instance->reg_set); - writel(MFI_RESET_FLAGS, &instance->reg_set->inbound_doorbell); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + writel(MFI_RESET_FLAGS, + &instance->reg_set->reserved_0[0]); + } else + writel(MFI_RESET_FLAGS, + &instance->reg_set->inbound_doorbell); max_wait = 60; cur_state = MFI_STATE_OPERATIONAL; @@ -2112,6 +2235,8 @@ static int megasas_init_mfi(struct megas * Map the message registers */ if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) { instance->base_addr = pci_resource_start(instance->pdev, 1); } else { @@ -2142,6 +2267,10 @@ static int megasas_init_mfi(struct megas case PCI_DEVICE_ID_LSI_SAS0079GEN2: instance->instancet = &megasas_instance_template_gen2; break; + case PCI_DEVICE_ID_LSI_SAS0073SKINNY: + case PCI_DEVICE_ID_LSI_SAS0071SKINNY: + instance->instancet = &megasas_instance_template_skinny; + break; case PCI_DEVICE_ID_LSI_SAS1064R: case PCI_DEVICE_ID_DELL_PERC5: default: diff -rupN linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.h linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.h --- linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.h 2009-09-13 10:17:15.000000000 -0400 +++ linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.h 2009-09-13 10:35:03.000000000 -0400 @@ -30,6 +30,8 @@ #define PCI_DEVICE_ID_LSI_VERDE_ZCR 0x0413 #define PCI_DEVICE_ID_LSI_SAS1078GEN2 0x0078 #define PCI_DEVICE_ID_LSI_SAS0079GEN2 0x0079 +#define PCI_DEVICE_ID_LSI_SAS0073SKINNY 0x0073 +#define PCI_DEVICE_ID_LSI_SAS0071SKINNY 0x0071 /* * ===================================== @@ -584,6 +586,8 @@ struct megasas_ctrl_info { #define MFI_REPLY_1078_MESSAGE_INTERRUPT 0x80000000 #define MFI_REPLY_GEN2_MESSAGE_INTERRUPT 0x00000001 #define MFI_GEN2_ENABLE_INTERRUPT_MASK (0x00000001 | 0x00000004) +#define MFI_REPLY_SKINNY_MESSAGE_INTERRUPT 0x40000000 +#define MFI_SKINNY_ENABLE_INTERRUPT_MASK (0x00000001) /* * register set for both 1068 and 1078 controllers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/