scsi: qla2xxx: Simplification of register address used in qla_tmpl.c

Reduce stack space on each fwdt routine by eliminating local variable reg.

Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
index 9f8a7a3..de696a0 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -7,13 +7,9 @@
 #include "qla_def.h"
 #include "qla_tmpl.h"
 
-#define IOBASE(reg)    offsetof(typeof(*reg), iobase_addr)
-
-static inline void __iomem *
-qla27xx_isp_reg(struct scsi_qla_host *vha)
-{
-       return &vha->hw->iobase->isp24;
-}
+#define ISPREG(vha)    (&(vha)->hw->iobase->isp24)
+#define IOBAR(reg)     offsetof(typeof(*(reg)), iobase_addr)
+#define IOBASE(vha)    IOBAR(ISPREG(vha))
 
 static inline void
 qla27xx_insert16(uint16_t value, void *buf, ulong *len)
@@ -114,7 +110,7 @@ qla27xx_read_window(__iomem struct device_reg_24xx *reg,
        void __iomem *window = (void __iomem *)reg + offset;
        void (*readn)(void __iomem*, void *, ulong *) = qla27xx_read_vector(width);
 
-       qla27xx_write_reg(reg, IOBASE_ADDR, addr, buf);
+       qla27xx_write_reg(reg, IOBAR(reg), addr, buf);
        while (count--) {
                qla27xx_insert32(addr, buf, len);
                readn(window, buf, len);
@@ -163,7 +159,6 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t256(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong addr = le32_to_cpu(ent->t256.base_addr);
        uint offset = ent->t256.pci_offset;
        ulong count = le16_to_cpu(ent->t256.reg_count);
@@ -171,7 +166,7 @@ qla27xx_fwdt_entry_t256(struct scsi_qla_host *vha,
 
        ql_dbg(ql_dbg_misc, vha, 0xd200,
            "%s: rdio t1 [%lx]\n", __func__, *len);
-       qla27xx_read_window(reg, addr, offset, count, width, buf, len);
+       qla27xx_read_window(ISPREG(vha), addr, offset, count, width, buf, len);
 
        return qla27xx_next_entry(ent);
 }
@@ -180,15 +175,14 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t257(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong addr = le32_to_cpu(ent->t257.base_addr);
        uint offset = ent->t257.pci_offset;
        ulong data = le32_to_cpu(ent->t257.write_data);
 
        ql_dbg(ql_dbg_misc, vha, 0xd201,
            "%s: wrio t1 [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, IOBASE(reg), addr, buf);
-       qla27xx_write_reg(reg, offset, data, buf);
+       qla27xx_write_reg(ISPREG(vha), IOBASE(vha), addr, buf);
+       qla27xx_write_reg(ISPREG(vha), offset, data, buf);
 
        return qla27xx_next_entry(ent);
 }
@@ -197,7 +191,6 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t258(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        uint banksel = ent->t258.banksel_offset;
        ulong bank = le32_to_cpu(ent->t258.bank);
        ulong addr = le32_to_cpu(ent->t258.base_addr);
@@ -207,8 +200,8 @@ qla27xx_fwdt_entry_t258(struct scsi_qla_host *vha,
 
        ql_dbg(ql_dbg_misc, vha, 0xd202,
            "%s: rdio t2 [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, banksel, bank, buf);
-       qla27xx_read_window(reg, addr, offset, count, width, buf, len);
+       qla27xx_write_reg(ISPREG(vha), banksel, bank, buf);
+       qla27xx_read_window(ISPREG(vha), addr, offset, count, width, buf, len);
 
        return qla27xx_next_entry(ent);
 }
@@ -217,7 +210,6 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t259(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong addr = le32_to_cpu(ent->t259.base_addr);
        uint banksel = ent->t259.banksel_offset;
        ulong bank = le32_to_cpu(ent->t259.bank);
@@ -226,9 +218,9 @@ qla27xx_fwdt_entry_t259(struct scsi_qla_host *vha,
 
        ql_dbg(ql_dbg_misc, vha, 0xd203,
            "%s: wrio t2 [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, IOBASE(reg), addr, buf);
-       qla27xx_write_reg(reg, banksel, bank, buf);
-       qla27xx_write_reg(reg, offset, data, buf);
+       qla27xx_write_reg(ISPREG(vha), IOBASE(vha), addr, buf);
+       qla27xx_write_reg(ISPREG(vha), banksel, bank, buf);
+       qla27xx_write_reg(ISPREG(vha), offset, data, buf);
 
        return qla27xx_next_entry(ent);
 }
@@ -237,13 +229,12 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t260(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        uint offset = ent->t260.pci_offset;
 
        ql_dbg(ql_dbg_misc, vha, 0xd204,
            "%s: rdpci [%lx]\n", __func__, *len);
        qla27xx_insert32(offset, buf, len);
-       qla27xx_read_reg(reg, offset, buf, len);
+       qla27xx_read_reg(ISPREG(vha), offset, buf, len);
 
        return qla27xx_next_entry(ent);
 }
@@ -252,13 +243,12 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t261(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        uint offset = ent->t261.pci_offset;
        ulong data = le32_to_cpu(ent->t261.write_data);
 
        ql_dbg(ql_dbg_misc, vha, 0xd205,
            "%s: wrpci [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, offset, data, buf);
+       qla27xx_write_reg(ISPREG(vha), offset, data, buf);
 
        return qla27xx_next_entry(ent);
 }
@@ -424,12 +414,10 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t265(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
-
-       ql_dbg(ql_dbg_misc, vha, 0xd209,
+       ql_dbg(ql_dbg_misc + ql_dbg_verbose, vha, 0xd209,
            "%s: pause risc [%lx]\n", __func__, *len);
        if (buf)
-               qla24xx_pause_risc(reg, vha->hw);
+               qla24xx_pause_risc(ISPREG(vha), vha->hw);
 
        return qla27xx_next_entry(ent);
 }
@@ -450,13 +438,12 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t267(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        uint offset = ent->t267.pci_offset;
        ulong data = le32_to_cpu(ent->t267.data);
 
        ql_dbg(ql_dbg_misc, vha, 0xd20b,
            "%s: dis intr [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, offset, data, buf);
+       qla27xx_write_reg(ISPREG(vha), offset, data, buf);
 
        return qla27xx_next_entry(ent);
 }
@@ -552,17 +539,16 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t270(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong addr = le32_to_cpu(ent->t270.addr);
        ulong dwords = le32_to_cpu(ent->t270.count);
 
        ql_dbg(ql_dbg_misc, vha, 0xd20e,
            "%s: rdremreg [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, IOBASE_ADDR, 0x40, buf);
+       qla27xx_write_reg(ISPREG(vha), IOBASE_ADDR, 0x40, buf);
        while (dwords--) {
-               qla27xx_write_reg(reg, 0xc0, addr|0x80000000, buf);
+               qla27xx_write_reg(ISPREG(vha), 0xc0, addr|0x80000000, buf);
                qla27xx_insert32(addr, buf, len);
-               qla27xx_read_reg(reg, 0xc4, buf, len);
+               qla27xx_read_reg(ISPREG(vha), 0xc4, buf, len);
                addr += sizeof(uint32_t);
        }
 
@@ -573,15 +559,14 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t271(struct scsi_qla_host *vha,
        struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong addr = le32_to_cpu(ent->t271.addr);
        ulong data = le32_to_cpu(ent->t271.data);
 
        ql_dbg(ql_dbg_misc, vha, 0xd20f,
            "%s: wrremreg [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, IOBASE_ADDR, 0x40, buf);
-       qla27xx_write_reg(reg, 0xc4, data, buf);
-       qla27xx_write_reg(reg, 0xc0, addr, buf);
+       qla27xx_write_reg(ISPREG(vha), IOBASE(vha), 0x40, buf);
+       qla27xx_write_reg(ISPREG(vha), 0xc4, data, buf);
+       qla27xx_write_reg(ISPREG(vha), 0xc0, addr, buf);
 
        return qla27xx_next_entry(ent);
 }
@@ -749,7 +734,6 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t277(struct scsi_qla_host *vha,
     struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong cmd_addr = le32_to_cpu(ent->t277.cmd_addr);
        ulong wr_cmd_data = le32_to_cpu(ent->t277.wr_cmd_data);
        ulong data_addr = le32_to_cpu(ent->t277.data_addr);
@@ -757,8 +741,8 @@ qla27xx_fwdt_entry_t277(struct scsi_qla_host *vha,
        ql_dbg(ql_dbg_misc + ql_dbg_verbose, vha, 0xd215,
            "%s: rdpep [%lx]\n", __func__, *len);
        qla27xx_insert32(wr_cmd_data, buf, len);
-       qla27xx_write_reg(reg, cmd_addr, wr_cmd_data, buf);
-       qla27xx_read_reg(reg, data_addr, buf, len);
+       qla27xx_write_reg(ISPREG(vha), cmd_addr, wr_cmd_data, buf);
+       qla27xx_read_reg(ISPREG(vha), data_addr, buf, len);
 
        return qla27xx_next_entry(ent);
 }
@@ -767,7 +751,6 @@ static struct qla27xx_fwdt_entry *
 qla27xx_fwdt_entry_t278(struct scsi_qla_host *vha,
     struct qla27xx_fwdt_entry *ent, void *buf, ulong *len)
 {
-       struct device_reg_24xx __iomem *reg = qla27xx_isp_reg(vha);
        ulong cmd_addr = le32_to_cpu(ent->t278.cmd_addr);
        ulong wr_cmd_data = le32_to_cpu(ent->t278.wr_cmd_data);
        ulong data_addr = le32_to_cpu(ent->t278.data_addr);
@@ -775,8 +758,8 @@ qla27xx_fwdt_entry_t278(struct scsi_qla_host *vha,
 
        ql_dbg(ql_dbg_misc + ql_dbg_verbose, vha, 0xd216,
            "%s: wrpep [%lx]\n", __func__, *len);
-       qla27xx_write_reg(reg, data_addr, wr_data, buf);
-       qla27xx_write_reg(reg, cmd_addr, wr_cmd_data, buf);
+       qla27xx_write_reg(ISPREG(vha), data_addr, wr_data, buf);
+       qla27xx_write_reg(ISPREG(vha), cmd_addr, wr_cmd_data, buf);
 
        return qla27xx_next_entry(ent);
 }