This patch removes 21 casts between an __iomem pointer type and
another data type but also introduces five new casts (see also
the casts with "__force"). Although this patch does not change
any functionality, IMHO the code with __force casts needs further
review.
Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Acked-by: Himanshu Madhani <himanshu.madh...@qlogic.com>
Cc: Quinn Tran <quinn.t...@qlogic.com>
Cc: Saurav Kashyap <saurav.kash...@qlogic.com>
---
drivers/scsi/qla2xxx/qla_def.h | 6 +--
drivers/scsi/qla2xxx/qla_iocb.c | 12 ++---
drivers/scsi/qla2xxx/qla_mbx.c | 2 +-
drivers/scsi/qla2xxx/qla_mr.c | 6 +--
drivers/scsi/qla2xxx/qla_nx.c | 107 +++++++++++++++++++---------------------
drivers/scsi/qla2xxx/qla_tmpl.c | 20 ++++----
6 files changed, 71 insertions(+), 82 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index e86201d..ac88c4e 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3418,9 +3418,9 @@ struct qla_hw_data {
mempool_t *ctx_mempool;
#define FCP_CMND_DMA_POOL_SIZE 512
- unsigned long nx_pcibase; /* Base I/O address */
- uint8_t *nxdb_rd_ptr; /* Doorbell read pointer */
- unsigned long nxdb_wr_ptr; /* Door bell write pointer */
+ void __iomem *nx_pcibase; /* Base I/O address */
+ void __iomem *nxdb_rd_ptr; /* Doorbell read pointer */
+ void __iomem *nxdb_wr_ptr; /* Door bell write pointer */
uint32_t crb_win;
uint32_t curr_window;
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 25f31d9..21d6f3f 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -2507,16 +2507,12 @@ sufficient_dsds:
/* write, read and verify logic */
dbval = dbval | (req->id << 8) | (req->ring_index << 16);
if (ql2xdbwr)
- qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval);
+ qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr, dbval);
else {
- WRT_REG_DWORD(
- (unsigned long __iomem *)ha->nxdb_wr_ptr,
- dbval);
+ WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
wmb();
- while (RD_REG_DWORD((void __iomem *)ha->nxdb_rd_ptr) != dbval) {
- WRT_REG_DWORD(
- (unsigned long __iomem *)ha->nxdb_wr_ptr,
- dbval);
+ while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
+ WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
wmb();
}
}
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 0c5477f..26ca18c 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -1239,7 +1239,7 @@ qla2x00_init_firmware(scsi_qla_host_t *vha, uint16_t size)
"Entered %s.\n", __func__);
if (IS_P3P_TYPE(ha) && ql2xdbwr)
- qla82xx_wr_32(ha, ha->nxdb_wr_ptr,
+ qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr,
(0x04 | (ha->portnum << 5) | (0 << 8) | (0 << 16)));
if (ha->flags.npiv_supported)
diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c
index 2d798e6..b5029e5 100644
--- a/drivers/scsi/qla2xxx/qla_mr.c
+++ b/drivers/scsi/qla2xxx/qla_mr.c
@@ -862,7 +862,7 @@ qlafx00_config_queues(struct scsi_qla_host *vha)
dma_addr_t bar2_hdl = pci_resource_start(ha->pdev, 2);
req->length = ha->req_que_len;
- req->ring = (void *)ha->iobase + ha->req_que_off;
+ req->ring = (void __force *)ha->iobase + ha->req_que_off;
req->dma = bar2_hdl + ha->req_que_off;
if ((!req->ring) || (req->length == 0)) {
ql_log_pci(ql_log_info, ha->pdev, 0x012f,
@@ -877,7 +877,7 @@ qlafx00_config_queues(struct scsi_qla_host *vha)
ha->req_que_off, (u64)req->dma);
rsp->length = ha->rsp_que_len;
- rsp->ring = (void *)ha->iobase + ha->rsp_que_off;
+ rsp->ring = (void __force *)ha->iobase + ha->rsp_que_off;
rsp->dma = bar2_hdl + ha->rsp_que_off;
if ((!rsp->ring) || (rsp->length == 0)) {
ql_log_pci(ql_log_info, ha->pdev, 0x0131,
@@ -1425,7 +1425,7 @@ qlafx00_init_response_q_entries(struct rsp_que *rsp)
pkt = rsp->ring_ptr;
for (cnt = 0; cnt < rsp->length; cnt++) {
pkt->signature = RESPONSE_PROCESSED;
- WRT_REG_DWORD((void __iomem *)&pkt->signature,
+ WRT_REG_DWORD((void __force __iomem *)&pkt->signature,
RESPONSE_PROCESSED);
pkt++;
}
diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c
index 287a182..678fb5b 100644
--- a/drivers/scsi/qla2xxx/qla_nx.c
+++ b/drivers/scsi/qla2xxx/qla_nx.c
@@ -347,32 +347,31 @@ char *qdev_state(uint32_t dev_state)
}
/*
- * In: 'off' is offset from CRB space in 128M pci map
- * Out: 'off' is 2M pci map addr
+ * In: 'off_in' is offset from CRB space in 128M pci map
+ * Out: 'off_out' is 2M pci map addr
* side effect: lock crb window
*/
static void
-qla82xx_pci_set_crbwindow_2M(struct qla_hw_data *ha, ulong *off)
+qla82xx_pci_set_crbwindow_2M(struct qla_hw_data *ha, ulong off_in,
+ void __iomem **off_out)
{
u32 win_read;
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
- ha->crb_win = CRB_HI(*off);
- writel(ha->crb_win,
- (void __iomem *)(CRB_WINDOW_2M + ha->nx_pcibase));
+ ha->crb_win = CRB_HI(off_in);
+ writel(ha->crb_win, CRB_WINDOW_2M + ha->nx_pcibase);
/* Read back value to make sure write has gone through before trying
* to use it.
*/
- win_read = RD_REG_DWORD((void __iomem *)
- (CRB_WINDOW_2M + ha->nx_pcibase));
+ win_read = RD_REG_DWORD(CRB_WINDOW_2M + ha->nx_pcibase);
if (win_read != ha->crb_win) {
ql_dbg(ql_dbg_p3p, vha, 0xb000,
"%s: Written crbwin (0x%x) "
"!= Read crbwin (0x%x), off=0x%lx.\n",
- __func__, ha->crb_win, win_read, *off);
+ __func__, ha->crb_win, win_read, off_in);
}
- *off = (*off & MASK(16)) + CRB_INDIRECT_2M + ha->nx_pcibase;
+ *off_out = (off_in & MASK(16)) + CRB_INDIRECT_2M + ha->nx_pcibase;
}
static inline unsigned long
@@ -417,29 +416,30 @@ qla82xx_pci_set_crbwindow(struct qla_hw_data *ha, u64 off)
}
static int
-qla82xx_pci_get_crb_addr_2M(struct qla_hw_data *ha, ulong *off)
+qla82xx_pci_get_crb_addr_2M(struct qla_hw_data *ha, ulong off_in,
+ void __iomem **off_out)
{
struct crb_128M_2M_sub_block_map *m;
- if (*off >= QLA82XX_CRB_MAX)
+ if (off_in >= QLA82XX_CRB_MAX)
return -1;
- if (*off >= QLA82XX_PCI_CAMQM && (*off < QLA82XX_PCI_CAMQM_2M_END)) {
- *off = (*off - QLA82XX_PCI_CAMQM) +
+ if (off_in >= QLA82XX_PCI_CAMQM && off_in < QLA82XX_PCI_CAMQM_2M_END) {
+ *off_out = (off_in - QLA82XX_PCI_CAMQM) +
QLA82XX_PCI_CAMQM_2M_BASE + ha->nx_pcibase;
return 0;
}
- if (*off < QLA82XX_PCI_CRBSPACE)
+ if (off_in < QLA82XX_PCI_CRBSPACE)
return -1;
- *off -= QLA82XX_PCI_CRBSPACE;
+ *off_out = (void __iomem *)(off_in - QLA82XX_PCI_CRBSPACE);
/* Try direct map */
- m = &crb_128M_2M_map[CRB_BLK(*off)].sub_block[CRB_SUBBLK(*off)];
+ m = &crb_128M_2M_map[CRB_BLK(off_in)].sub_block[CRB_SUBBLK(off_in)];
- if (m->valid && (m->start_128M <= *off) && (m->end_128M > *off)) {
- *off = *off + m->start_2M - m->start_128M + ha->nx_pcibase;
+ if (m->valid && (m->start_128M <= off_in) && (m->end_128M > off_in)) {
+ *off_out = off_in + m->start_2M - m->start_128M +
ha->nx_pcibase;
return 0;
}
/* Not in direct map, use crb window */
@@ -465,19 +465,20 @@ static int qla82xx_crb_win_lock(struct qla_hw_data *ha)
}
int
-qla82xx_wr_32(struct qla_hw_data *ha, ulong off, u32 data)
+qla82xx_wr_32(struct qla_hw_data *ha, ulong off_in, u32 data)
{
+ void __iomem *off;
unsigned long flags = 0;
int rv;
- rv = qla82xx_pci_get_crb_addr_2M(ha, &off);
+ rv = qla82xx_pci_get_crb_addr_2M(ha, off_in, &off);
BUG_ON(rv == -1);
if (rv == 1) {
write_lock_irqsave(&ha->hw_lock, flags);
qla82xx_crb_win_lock(ha);
- qla82xx_pci_set_crbwindow_2M(ha, &off);
+ qla82xx_pci_set_crbwindow_2M(ha, off_in, &off);
}
writel(data, (void __iomem *)off);
@@ -490,22 +491,23 @@ qla82xx_wr_32(struct qla_hw_data *ha, ulong off, u32 data)
}
int
-qla82xx_rd_32(struct qla_hw_data *ha, ulong off)
+qla82xx_rd_32(struct qla_hw_data *ha, ulong off_in)
{
+ void __iomem *off;
unsigned long flags = 0;
int rv;
u32 data;
- rv = qla82xx_pci_get_crb_addr_2M(ha, &off);
+ rv = qla82xx_pci_get_crb_addr_2M(ha, off_in, &off);
BUG_ON(rv == -1);
if (rv == 1) {
write_lock_irqsave(&ha->hw_lock, flags);
qla82xx_crb_win_lock(ha);
- qla82xx_pci_set_crbwindow_2M(ha, &off);
+ qla82xx_pci_set_crbwindow_2M(ha, off_in, &off);
}
- data = RD_REG_DWORD((void __iomem *)off);
+ data = RD_REG_DWORD(off);
if (rv == 1) {
qla82xx_rd_32(ha, QLA82XX_PCIE_REG(PCIE_SEM7_UNLOCK));
@@ -919,20 +921,18 @@ qla82xx_md_rw_32(struct qla_hw_data *ha, uint32_t off,
u32 data, uint8_t flag)
{
uint32_t off_value, rval = 0;
- WRT_REG_DWORD((void __iomem *)(CRB_WINDOW_2M + ha->nx_pcibase),
- (off & 0xFFFF0000));
+ WRT_REG_DWORD(CRB_WINDOW_2M + ha->nx_pcibase, off & 0xFFFF0000);
/* Read back value to make sure write has gone through */
- RD_REG_DWORD((void __iomem *)(CRB_WINDOW_2M + ha->nx_pcibase));
+ RD_REG_DWORD(CRB_WINDOW_2M + ha->nx_pcibase);
off_value = (off & 0x0000FFFF);
if (flag)
- WRT_REG_DWORD((void __iomem *)
- (off_value + CRB_INDIRECT_2M + ha->nx_pcibase),
- data);
+ WRT_REG_DWORD(off_value + CRB_INDIRECT_2M + ha->nx_pcibase,
+ data);
else
- rval = RD_REG_DWORD((void __iomem *)
- (off_value + CRB_INDIRECT_2M + ha->nx_pcibase));
+ rval = RD_REG_DWORD(off_value + CRB_INDIRECT_2M +
+ ha->nx_pcibase);
return rval;
}
@@ -1660,8 +1660,7 @@ qla82xx_iospace_config(struct qla_hw_data *ha)
}
len = pci_resource_len(ha->pdev, 0);
- ha->nx_pcibase =
- (unsigned long)ioremap(pci_resource_start(ha->pdev, 0), len);
+ ha->nx_pcibase = ioremap(pci_resource_start(ha->pdev, 0), len);
if (!ha->nx_pcibase) {
ql_log_pci(ql_log_fatal, ha->pdev, 0x000e,
"Cannot remap pcibase MMIO, aborting.\n");
@@ -1670,17 +1669,13 @@ qla82xx_iospace_config(struct qla_hw_data *ha)
/* Mapping of IO base pointer */
if (IS_QLA8044(ha)) {
- ha->iobase =
- (device_reg_t *)((uint8_t *)ha->nx_pcibase);
+ ha->iobase = ha->nx_pcibase;
} else if (IS_QLA82XX(ha)) {
- ha->iobase =
- (device_reg_t *)((uint8_t *)ha->nx_pcibase +
- 0xbc000 + (ha->pdev->devfn << 11));
+ ha->iobase = ha->nx_pcibase + 0xbc000 + (ha->pdev->devfn << 11);
}
if (!ql2xdbwr) {
- ha->nxdb_wr_ptr =
- (unsigned long)ioremap((pci_resource_start(ha->pdev, 4) +
+ ha->nxdb_wr_ptr = ioremap((pci_resource_start(ha->pdev, 4) +
(ha->pdev->devfn << 12)), 4);
if (!ha->nxdb_wr_ptr) {
ql_log_pci(ql_log_fatal, ha->pdev, 0x000f,
@@ -1691,10 +1686,10 @@ qla82xx_iospace_config(struct qla_hw_data *ha)
/* Mapping of IO base pointer,
* door bell read and write pointer
*/
- ha->nxdb_rd_ptr = (uint8_t *) ha->nx_pcibase + (512 * 1024) +
+ ha->nxdb_rd_ptr = ha->nx_pcibase + (512 * 1024) +
(ha->pdev->devfn * 8);
} else {
- ha->nxdb_wr_ptr = (ha->pdev->devfn == 6 ?
+ ha->nxdb_wr_ptr = (void __iomem *)(ha->pdev->devfn == 6 ?
QLA82XX_CAMRAM_DB1 :
QLA82XX_CAMRAM_DB2);
}
@@ -1704,12 +1699,12 @@ qla82xx_iospace_config(struct qla_hw_data *ha)
ql_dbg_pci(ql_dbg_multiq, ha->pdev, 0xc006,
"nx_pci_base=%p iobase=%p "
"max_req_queues=%d msix_count=%d.\n",
- (void *)ha->nx_pcibase, ha->iobase,
+ ha->nx_pcibase, ha->iobase,
ha->max_req_queues, ha->msix_count);
ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0010,
"nx_pci_base=%p iobase=%p "
"max_req_queues=%d msix_count=%d.\n",
- (void *)ha->nx_pcibase, ha->iobase,
+ ha->nx_pcibase, ha->iobase,
ha->max_req_queues, ha->msix_count);
return 0;
@@ -1774,9 +1769,9 @@ void qla82xx_config_rings(struct scsi_qla_host *vha)
icb->response_q_address[0] = cpu_to_le32(LSD(rsp->dma));
icb->response_q_address[1] = cpu_to_le32(MSD(rsp->dma));
- WRT_REG_DWORD((unsigned long __iomem *)®->req_q_out[0], 0);
- WRT_REG_DWORD((unsigned long __iomem *)®->rsp_q_in[0], 0);
- WRT_REG_DWORD((unsigned long __iomem *)®->rsp_q_out[0], 0);
+ WRT_REG_DWORD(®->req_q_out[0], 0);
+ WRT_REG_DWORD(®->rsp_q_in[0], 0);
+ WRT_REG_DWORD(®->rsp_q_out[0], 0);
}
static int
@@ -2799,13 +2794,12 @@ qla82xx_start_iocbs(scsi_qla_host_t *vha)
dbval = dbval | (req->id << 8) | (req->ring_index << 16);
if (ql2xdbwr)
- qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval);
+ qla82xx_wr_32(ha, (unsigned long)ha->nxdb_wr_ptr, dbval);
else {
- WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
+ WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
wmb();
- while (RD_REG_DWORD((void __iomem *)ha->nxdb_rd_ptr) != dbval) {
- WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr,
- dbval);
+ while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
+ WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
wmb();
}
}
@@ -3836,8 +3830,7 @@ qla82xx_minidump_process_rdocm(scsi_qla_host_t *vha,
loop_cnt = ocm_hdr->op_count;
for (i = 0; i < loop_cnt; i++) {
- r_value = RD_REG_DWORD((void __iomem *)
- (r_addr + ha->nx_pcibase));
+ r_value = RD_REG_DWORD(r_addr + ha->nx_pcibase);
*data_ptr++ = cpu_to_le32(r_value);
r_addr += r_stride;
}
diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
index 7e876d1..f4eb655 100644
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -137,39 +137,39 @@ qla27xx_insertbuf(void *mem, ulong size, void *buf, ulong
*len)
}
static inline void
-qla27xx_read8(void *window, void *buf, ulong *len)
+qla27xx_read8(void __iomem *window, void *buf, ulong *len)
{
uint8_t value = ~0;
if (buf) {
- value = RD_REG_BYTE((__iomem void *)window);
+ value = RD_REG_BYTE(window);
}
qla27xx_insert32(value, buf, len);
}
static inline void
-qla27xx_read16(void *window, void *buf, ulong *len)
+qla27xx_read16(void __iomem *window, void *buf, ulong *len)
{
uint16_t value = ~0;
if (buf) {
- value = RD_REG_WORD((__iomem void *)window);
+ value = RD_REG_WORD(window);
}
qla27xx_insert32(value, buf, len);
}
static inline void
-qla27xx_read32(void *window, void *buf, ulong *len)
+qla27xx_read32(void __iomem *window, void *buf, ulong *len)
{
uint32_t value = ~0;
if (buf) {
- value = RD_REG_DWORD((__iomem void *)window);
+ value = RD_REG_DWORD(window);
}
qla27xx_insert32(value, buf, len);
}
-static inline void (*qla27xx_read_vector(uint width))(void *, void *, ulong *)
+static inline void (*qla27xx_read_vector(uint width))(void __iomem*, void *,
ulong *)
{
return
(width == 1) ? qla27xx_read8 :
@@ -181,7 +181,7 @@ static inline void
qla27xx_read_reg(__iomem struct device_reg_24xx *reg,
uint offset, void *buf, ulong *len)
{
- void *window = (void *)reg + offset;
+ void __iomem *window = (void __iomem *)reg + offset;
qla27xx_read32(window, buf, len);
}
@@ -202,8 +202,8 @@ qla27xx_read_window(__iomem struct device_reg_24xx *reg,
uint32_t addr, uint offset, uint count, uint width, void *buf,
ulong *len)
{
- void *window = (void *)reg + offset;
- void (*readn)(void *, void *, ulong *) = qla27xx_read_vector(width);
+ 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);
while (count--) {
--
2.1.4
--
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