Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 486 insertions, 0 deletions

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
new file mode 100644
index 000000000..d499c4466
--- /dev/null
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -0,0 +1,486 @@
+/*
+ * Copyright (c) 2015 Linaro Ltd.
+ * Copyright (c) 2015 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#ifndef _HISI_SAS_H_
+#define _HISI_SAS_H_
+
+#include <linux/acpi.h>
+#include <linux/clk.h>
+#include <linux/dmapool.h>
+#include <linux/iopoll.h>
+#include <linux/lcm.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <scsi/sas_ata.h>
+#include <scsi/libsas.h>
+
+#define HISI_SAS_MAX_PHYS	9
+#define HISI_SAS_MAX_QUEUES	32
+#define HISI_SAS_QUEUE_SLOTS 512
+#define HISI_SAS_MAX_ITCT_ENTRIES 1024
+#define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
+#define HISI_SAS_RESET_BIT	0
+#define HISI_SAS_REJECT_CMD_BIT	1
+
+#define HISI_SAS_STATUS_BUF_SZ (sizeof(struct hisi_sas_status_buffer))
+#define HISI_SAS_COMMAND_TABLE_SZ (sizeof(union hisi_sas_command_table))
+
+#define hisi_sas_status_buf_addr(buf) \
+	(buf + offsetof(struct hisi_sas_slot_buf_table, status_buffer))
+#define hisi_sas_status_buf_addr_mem(slot) hisi_sas_status_buf_addr(slot->buf)
+#define hisi_sas_status_buf_addr_dma(slot) \
+	hisi_sas_status_buf_addr(slot->buf_dma)
+
+#define hisi_sas_cmd_hdr_addr(buf) \
+	(buf + offsetof(struct hisi_sas_slot_buf_table, command_header))
+#define hisi_sas_cmd_hdr_addr_mem(slot) hisi_sas_cmd_hdr_addr(slot->buf)
+#define hisi_sas_cmd_hdr_addr_dma(slot) hisi_sas_cmd_hdr_addr(slot->buf_dma)
+
+#define hisi_sas_sge_addr(buf) \
+	(buf + offsetof(struct hisi_sas_slot_buf_table, sge_page))
+#define hisi_sas_sge_addr_mem(slot) hisi_sas_sge_addr(slot->buf)
+#define hisi_sas_sge_addr_dma(slot) hisi_sas_sge_addr(slot->buf_dma)
+
+#define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024)
+#define HISI_SAS_MAX_SMP_RESP_SZ 1028
+#define HISI_SAS_MAX_STP_RESP_SZ 28
+
+#define DEV_IS_EXPANDER(type) \
+	((type == SAS_EDGE_EXPANDER_DEVICE) || \
+	(type == SAS_FANOUT_EXPANDER_DEVICE))
+
+#define HISI_SAS_SATA_PROTOCOL_NONDATA		0x1
+#define HISI_SAS_SATA_PROTOCOL_PIO			0x2
+#define HISI_SAS_SATA_PROTOCOL_DMA			0x4
+#define HISI_SAS_SATA_PROTOCOL_FPDMA		0x8
+#define HISI_SAS_SATA_PROTOCOL_ATAPI		0x10
+
+struct hisi_hba;
+
+enum {
+	PORT_TYPE_SAS = (1U << 1),
+	PORT_TYPE_SATA = (1U << 0),
+};
+
+enum dev_status {
+	HISI_SAS_DEV_NORMAL,
+	HISI_SAS_DEV_EH,
+};
+
+enum {
+	HISI_SAS_INT_ABT_CMD = 0,
+	HISI_SAS_INT_ABT_DEV = 1,
+};
+
+enum hisi_sas_dev_type {
+	HISI_SAS_DEV_TYPE_STP = 0,
+	HISI_SAS_DEV_TYPE_SSP,
+	HISI_SAS_DEV_TYPE_SATA,
+};
+
+struct hisi_sas_hw_error {
+	u32 irq_msk;
+	u32 msk;
+	int shift;
+	const char *msg;
+	int reg;
+	const struct hisi_sas_hw_error *sub;
+};
+
+struct hisi_sas_rst {
+	struct hisi_hba *hisi_hba;
+	struct completion *completion;
+	struct work_struct work;
+	bool done;
+};
+
+#define HISI_SAS_RST_WORK_INIT(r, c) \
+	{	.hisi_hba = hisi_hba, \
+		.completion = &c, \
+		.work = __WORK_INITIALIZER(r.work, \
+				hisi_sas_sync_rst_work_handler), \
+		.done = false, \
+		}
+
+#define HISI_SAS_DECLARE_RST_WORK_ON_STACK(r) \
+	DECLARE_COMPLETION_ONSTACK(c); \
+	DECLARE_WORK(w, hisi_sas_sync_rst_work_handler); \
+	struct hisi_sas_rst r = HISI_SAS_RST_WORK_INIT(r, c)
+
+enum hisi_sas_bit_err_type {
+	HISI_SAS_ERR_SINGLE_BIT_ECC = 0x0,
+	HISI_SAS_ERR_MULTI_BIT_ECC = 0x1,
+};
+
+enum hisi_sas_phy_event {
+	HISI_PHYE_PHY_UP   = 0U,
+	HISI_PHYE_LINK_RESET,
+	HISI_PHYES_NUM,
+};
+
+struct hisi_sas_phy {
+	struct work_struct	works[HISI_PHYES_NUM];
+	struct hisi_hba	*hisi_hba;
+	struct hisi_sas_port	*port;
+	struct asd_sas_phy	sas_phy;
+	struct sas_identify	identify;
+	struct completion *reset_completion;
+	spinlock_t lock;
+	u64		port_id; /* from hw */
+	u64		frame_rcvd_size;
+	u8		frame_rcvd[32];
+	u8		phy_attached;
+	u8		in_reset;
+	u8		reserved[2];
+	u32		phy_type;
+	enum sas_linkrate	minimum_linkrate;
+	enum sas_linkrate	maximum_linkrate;
+};
+
+struct hisi_sas_port {
+	struct asd_sas_port	sas_port;
+	u8	port_attached;
+	u8	id; /* from hw */
+};
+
+struct hisi_sas_cq {
+	struct hisi_hba *hisi_hba;
+	struct tasklet_struct tasklet;
+	int	rd_point;
+	int	id;
+};
+
+struct hisi_sas_dq {
+	struct hisi_hba *hisi_hba;
+	struct list_head list;
+	spinlock_t lock;
+	int	wr_point;
+	int	id;
+};
+
+struct hisi_sas_device {
+	struct hisi_hba		*hisi_hba;
+	struct domain_device	*sas_device;
+	struct completion *completion;
+	struct hisi_sas_dq	*dq;
+	struct list_head	list;
+	enum sas_device_type	dev_type;
+	int device_id;
+	int sata_idx;
+	u8 dev_status;
+};
+
+struct hisi_sas_tmf_task {
+	int force_phy;
+	int phy_id;
+	u8 tmf;
+	u16 tag_of_task_to_be_managed;
+};
+
+struct hisi_sas_slot {
+	struct list_head entry;
+	struct list_head delivery;
+	struct sas_task *task;
+	struct hisi_sas_port	*port;
+	u64	n_elem;
+	int	dlvry_queue;
+	int	dlvry_queue_slot;
+	int	cmplt_queue;
+	int	cmplt_queue_slot;
+	int	abort;
+	int	ready;
+	void	*cmd_hdr;
+	dma_addr_t cmd_hdr_dma;
+	struct timer_list internal_abort_timer;
+	bool is_internal;
+	struct hisi_sas_tmf_task *tmf;
+	/* Do not reorder/change members after here */
+	void	*buf;
+	dma_addr_t buf_dma;
+	int	idx;
+};
+
+struct hisi_sas_hw {
+	int (*hw_init)(struct hisi_hba *hisi_hba);
+	void (*setup_itct)(struct hisi_hba *hisi_hba,
+			   struct hisi_sas_device *device);
+	int (*slot_index_alloc)(struct hisi_hba *hisi_hba, int *slot_idx,
+				struct domain_device *device);
+	struct hisi_sas_device *(*alloc_dev)(struct domain_device *device);
+	void (*sl_notify_ssp)(struct hisi_hba *hisi_hba, int phy_no);
+	int (*get_free_slot)(struct hisi_hba *hisi_hba, struct hisi_sas_dq *dq);
+	void (*start_delivery)(struct hisi_sas_dq *dq);
+	void (*prep_ssp)(struct hisi_hba *hisi_hba,
+			struct hisi_sas_slot *slot);
+	void (*prep_smp)(struct hisi_hba *hisi_hba,
+			struct hisi_sas_slot *slot);
+	void (*prep_stp)(struct hisi_hba *hisi_hba,
+			struct hisi_sas_slot *slot);
+	void (*prep_abort)(struct hisi_hba *hisi_hba,
+			  struct hisi_sas_slot *slot,
+			  int device_id, int abort_flag, int tag_to_abort);
+	int (*slot_complete)(struct hisi_hba *hisi_hba,
+			     struct hisi_sas_slot *slot);
+	void (*phys_init)(struct hisi_hba *hisi_hba);
+	void (*phy_start)(struct hisi_hba *hisi_hba, int phy_no);
+	void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no);
+	void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no);
+	void (*get_events)(struct hisi_hba *hisi_hba, int phy_no);
+	void (*phy_set_linkrate)(struct hisi_hba *hisi_hba, int phy_no,
+			struct sas_phy_linkrates *linkrates);
+	enum sas_linkrate (*phy_get_max_linkrate)(void);
+	void (*clear_itct)(struct hisi_hba *hisi_hba,
+			    struct hisi_sas_device *dev);
+	void (*free_device)(struct hisi_sas_device *sas_dev);
+	int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
+	void (*dereg_device)(struct hisi_hba *hisi_hba,
+				struct domain_device *device);
+	int (*soft_reset)(struct hisi_hba *hisi_hba);
+	u32 (*get_phys_state)(struct hisi_hba *hisi_hba);
+	int (*write_gpio)(struct hisi_hba *hisi_hba, u8 reg_type,
+				u8 reg_index, u8 reg_count, u8 *write_data);
+	void (*wait_cmds_complete_timeout)(struct hisi_hba *hisi_hba,
+					   int delay_ms, int timeout_ms);
+	int max_command_entries;
+	int complete_hdr_size;
+	struct scsi_host_template *sht;
+};
+
+struct hisi_hba {
+	/* This must be the first element, used by SHOST_TO_SAS_HA */
+	struct sas_ha_struct *p;
+
+	struct platform_device *platform_dev;
+	struct pci_dev *pci_dev;
+	struct device *dev;
+
+	void __iomem *regs;
+	void __iomem *sgpio_regs;
+	struct regmap *ctrl;
+	u32 ctrl_reset_reg;
+	u32 ctrl_reset_sts_reg;
+	u32 ctrl_clock_ena_reg;
+	u32 refclk_frequency_mhz;
+	u8 sas_addr[SAS_ADDR_SIZE];
+
+	int n_phy;
+	spinlock_t lock;
+	struct semaphore sem;
+
+	struct timer_list timer;
+	struct workqueue_struct *wq;
+
+	int slot_index_count;
+	int last_slot_index;
+	int last_dev_id;
+	unsigned long *slot_index_tags;
+	unsigned long reject_stp_links_msk;
+
+	/* SCSI/SAS glue */
+	struct sas_ha_struct sha;
+	struct Scsi_Host *shost;
+
+	struct hisi_sas_cq cq[HISI_SAS_MAX_QUEUES];
+	struct hisi_sas_dq dq[HISI_SAS_MAX_QUEUES];
+	struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
+	struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
+
+	int	queue_count;
+
+	struct hisi_sas_device	devices[HISI_SAS_MAX_DEVICES];
+	struct hisi_sas_cmd_hdr	*cmd_hdr[HISI_SAS_MAX_QUEUES];
+	dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
+	void *complete_hdr[HISI_SAS_MAX_QUEUES];
+	dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
+	struct hisi_sas_initial_fis *initial_fis;
+	dma_addr_t initial_fis_dma;
+	struct hisi_sas_itct *itct;
+	dma_addr_t itct_dma;
+	struct hisi_sas_iost *iost;
+	dma_addr_t iost_dma;
+	struct hisi_sas_breakpoint *breakpoint;
+	dma_addr_t breakpoint_dma;
+	struct hisi_sas_breakpoint *sata_breakpoint;
+	dma_addr_t sata_breakpoint_dma;
+	struct hisi_sas_slot	*slot_info;
+	unsigned long flags;
+	const struct hisi_sas_hw *hw;	/* Low level hw interface */
+	unsigned long sata_dev_bitmap[BITS_TO_LONGS(HISI_SAS_MAX_DEVICES)];
+	struct work_struct rst_work;
+	u32 phy_state;
+};
+
+/* Generic HW DMA host memory structures */
+/* Delivery queue header */
+struct hisi_sas_cmd_hdr {
+	/* dw0 */
+	__le32 dw0;
+
+	/* dw1 */
+	__le32 dw1;
+
+	/* dw2 */
+	__le32 dw2;
+
+	/* dw3 */
+	__le32 transfer_tags;
+
+	/* dw4 */
+	__le32 data_transfer_len;
+
+	/* dw5 */
+	__le32 first_burst_num;
+
+	/* dw6 */
+	__le32 sg_len;
+
+	/* dw7 */
+	__le32 dw7;
+
+	/* dw8-9 */
+	__le64 cmd_table_addr;
+
+	/* dw10-11 */
+	__le64 sts_buffer_addr;
+
+	/* dw12-13 */
+	__le64 prd_table_addr;
+
+	/* dw14-15 */
+	__le64 dif_prd_table_addr;
+};
+
+struct hisi_sas_itct {
+	__le64 qw0;
+	__le64 sas_addr;
+	__le64 qw2;
+	__le64 qw3;
+	__le64 qw4_15[12];
+};
+
+struct hisi_sas_iost {
+	__le64 qw0;
+	__le64 qw1;
+	__le64 qw2;
+	__le64 qw3;
+};
+
+struct hisi_sas_err_record {
+	u32	data[4];
+};
+
+struct hisi_sas_initial_fis {
+	struct hisi_sas_err_record err_record;
+	struct dev_to_host_fis fis;
+	u32 rsvd[3];
+};
+
+struct hisi_sas_breakpoint {
+	u8	data[128];
+};
+
+struct hisi_sas_sata_breakpoint {
+	struct hisi_sas_breakpoint tag[32];
+};
+
+struct hisi_sas_sge {
+	__le64 addr;
+	__le32 page_ctrl_0;
+	__le32 page_ctrl_1;
+	__le32 data_len;
+	__le32 data_off;
+};
+
+struct hisi_sas_command_table_smp {
+	u8 bytes[44];
+};
+
+struct hisi_sas_command_table_stp {
+	struct	host_to_dev_fis command_fis;
+	u8	dummy[12];
+	u8	atapi_cdb[ATAPI_CDB_LEN];
+};
+
+#define HISI_SAS_SGE_PAGE_CNT SG_CHUNK_SIZE
+struct hisi_sas_sge_page {
+	struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
+}  __aligned(16);
+
+struct hisi_sas_command_table_ssp {
+	struct ssp_frame_hdr hdr;
+	union {
+		struct {
+			struct ssp_command_iu task;
+			u32 prot[7];
+		};
+		struct ssp_tmf_iu ssp_task;
+		struct xfer_rdy_iu xfer_rdy;
+		struct ssp_response_iu ssp_res;
+	} u;
+};
+
+union hisi_sas_command_table {
+	struct hisi_sas_command_table_ssp ssp;
+	struct hisi_sas_command_table_smp smp;
+	struct hisi_sas_command_table_stp stp;
+}  __aligned(16);
+
+struct hisi_sas_status_buffer {
+	struct hisi_sas_err_record err;
+	u8	iu[1024];
+}  __aligned(16);
+
+struct hisi_sas_slot_buf_table {
+	struct hisi_sas_status_buffer status_buffer;
+	union hisi_sas_command_table command_header;
+	struct hisi_sas_sge_page sge_page;
+};
+
+extern struct scsi_transport_template *hisi_sas_stt;
+extern void hisi_sas_stop_phys(struct hisi_hba *hisi_hba);
+extern int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost);
+extern void hisi_sas_free(struct hisi_hba *hisi_hba);
+extern u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis,
+				int direction);
+extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port);
+extern void hisi_sas_sata_done(struct sas_task *task,
+			    struct hisi_sas_slot *slot);
+extern int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag);
+extern int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba);
+extern int hisi_sas_probe(struct platform_device *pdev,
+			  const struct hisi_sas_hw *ops);
+extern int hisi_sas_remove(struct platform_device *pdev);
+
+extern int hisi_sas_slave_configure(struct scsi_device *sdev);
+extern int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time);
+extern void hisi_sas_scan_start(struct Scsi_Host *shost);
+extern struct device_attribute *host_attrs[];
+extern int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type);
+extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
+extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
+				    struct sas_task *task,
+				    struct hisi_sas_slot *slot);
+extern void hisi_sas_init_mem(struct hisi_hba *hisi_hba);
+extern void hisi_sas_rst_work_handler(struct work_struct *work);
+extern void hisi_sas_sync_rst_work_handler(struct work_struct *work);
+extern void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba);
+extern bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
+				enum hisi_sas_phy_event event);
+extern void hisi_sas_release_tasks(struct hisi_hba *hisi_hba);
+extern u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max);
+extern void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba);
+extern void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba);
+#endif