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Subject[PATCHv2 02/11] staging: tidspbridge - move shared memory iommu maps to tiomap3430.c
Date
Now iommu maps of shared memory segments are done in
bridge_brd_start and unmaped in bridge_brd_stop.

Signed-off-by: Fernando Guzman Lugo <x0095840@ti.com>
---
drivers/staging/tidspbridge/core/_tiomap.h | 13 +++
drivers/staging/tidspbridge/core/io_sm.c | 125 +++--------------------
drivers/staging/tidspbridge/core/tiomap3430.c | 136 +++++++++++++++++++-----
drivers/staging/tidspbridge/core/tiomap_io.c | 12 +-
4 files changed, 139 insertions(+), 147 deletions(-)
diff --git a/drivers/staging/tidspbridge/core/_tiomap.h b/drivers/staging/tidspbridge/core/_tiomap.h
index a42c393..c1bf95d 100644
--- a/drivers/staging/tidspbridge/core/_tiomap.h
+++ b/drivers/staging/tidspbridge/core/_tiomap.h
@@ -308,6 +308,18 @@ static const struct bpwr_clk_t bpwr_clks[] = {

#define CLEAR_BIT_INDEX(reg, index) (reg &= ~(1 << (index)))

+struct shm_segs {
+ u32 seg0_da;
+ u32 seg0_pa;
+ u32 seg0_va;
+ u32 seg0_size;
+ u32 seg1_da;
+ u32 seg1_pa;
+ u32 seg1_va;
+ u32 seg1_size;
+};
+
+
/* This Bridge driver's device context: */
struct bridge_dev_context {
struct dev_object *hdev_obj; /* Handle to Bridge device object. */
@@ -331,6 +343,7 @@ struct bridge_dev_context {

struct omap_mbox *mbox; /* Mail box handle */
struct iommu *dsp_mmu; /* iommu for iva2 handler */
+ struct shm_segs sh_s;
struct cfg_hostres *resources; /* Host Resources */

/*
diff --git a/drivers/staging/tidspbridge/core/io_sm.c b/drivers/staging/tidspbridge/core/io_sm.c
index 842b8db..56856ad 100644
--- a/drivers/staging/tidspbridge/core/io_sm.c
+++ b/drivers/staging/tidspbridge/core/io_sm.c
@@ -291,7 +291,7 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
struct cod_manager *cod_man;
struct chnl_mgr *hchnl_mgr;
struct msg_mgr *hmsg_mgr;
- struct iommu *mmu;
+ struct shm_segs *sm_sg;
u32 ul_shm_base;
u32 ul_shm_base_offset;
u32 ul_shm_limit;
@@ -317,14 +317,6 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
u32 shm0_end;
u32 ul_dyn_ext_base;
u32 ul_seg1_size = 0;
- u32 pa_curr = 0;
- u32 va_curr = 0;
- u32 gpp_va_curr = 0;
- u32 num_bytes = 0;
- u32 all_bits = 0;
- u32 page_size[] = { HW_PAGE_SIZE16MB, HW_PAGE_SIZE1MB,
- HW_PAGE_SIZE64KB, HW_PAGE_SIZE4KB
- };

status = dev_get_bridge_context(hio_mgr->hdev_obj, &pbridge_context);
if (!pbridge_context) {
@@ -337,19 +329,7 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
status = -EFAULT;
goto func_end;
}
- mmu = pbridge_context->dsp_mmu;
-
- if (mmu)
- iommu_put(mmu);
- mmu = iommu_get("iva2");
-
- if (IS_ERR_OR_NULL(mmu)) {
- dev_err(bridge, "iommu_get failed!\n");
- pbridge_context->dsp_mmu = NULL;
- status = -EFAULT;
- goto func_end;
- }
- pbridge_context->dsp_mmu = mmu;
+ sm_sg = &pbridge_context->sh_s;

status = dev_get_cod_mgr(hio_mgr->hdev_obj, &cod_man);
if (!cod_man) {
@@ -485,74 +465,14 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
if (status)
goto func_end;

- pa_curr = ul_gpp_pa;
- va_curr = ul_dyn_ext_base * hio_mgr->word_size;
- gpp_va_curr = ul_gpp_va;
- num_bytes = ul_seg1_size;
-
- va_curr = iommu_kmap(mmu, va_curr, pa_curr, num_bytes,
- IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
- if (IS_ERR_VALUE(va_curr)) {
- status = (int)va_curr;
- goto func_end;
- }
-
- pa_curr += ul_pad_size + num_bytes;
- va_curr += ul_pad_size + num_bytes;
- gpp_va_curr += ul_pad_size + num_bytes;
-
- /* Configure the TLB entries for the next cacheable segment */
- num_bytes = ul_seg_size;
- va_curr = ul_dsp_va * hio_mgr->word_size;
- while (num_bytes) {
- /*
- * To find the max. page size with which both PA & VA are
- * aligned.
- */
- all_bits = pa_curr | va_curr;
- dev_dbg(bridge, "all_bits for Seg1 %x, pa_curr %x, "
- "va_curr %x, num_bytes %x\n", all_bits, pa_curr,
- va_curr, num_bytes);
- for (i = 0; i < 4; i++) {
- if (!(num_bytes >= page_size[i]) ||
- !((all_bits & (page_size[i] - 1)) == 0))
- continue;
- if (ndx < MAX_LOCK_TLB_ENTRIES) {
- /*
- * This is the physical address written to
- * DSP MMU.
- */
- ae_proc[ndx].ul_gpp_pa = pa_curr;
- /*
- * This is the virtual uncached ioremapped
- * address!!!
- */
- ae_proc[ndx].ul_gpp_va = gpp_va_curr;
- ae_proc[ndx].ul_dsp_va =
- va_curr / hio_mgr->word_size;
- ae_proc[ndx].ul_size = page_size[i];
- ae_proc[ndx].endianism = HW_LITTLE_ENDIAN;
- ae_proc[ndx].elem_size = HW_ELEM_SIZE16BIT;
- ae_proc[ndx].mixed_mode = HW_MMU_CPUES;
- dev_dbg(bridge, "shm MMU TLB entry PA %x"
- " VA %x DSP_VA %x Size %x\n",
- ae_proc[ndx].ul_gpp_pa,
- ae_proc[ndx].ul_gpp_va,
- ae_proc[ndx].ul_dsp_va *
- hio_mgr->word_size, page_size[i]);
- ndx++;
- }
- pa_curr += page_size[i];
- va_curr += page_size[i];
- gpp_va_curr += page_size[i];
- num_bytes -= page_size[i];
- /*
- * Don't try smaller sizes. Hopefully we have reached
- * an address aligned to a bigger page size.
- */
- break;
- }
- }
+ sm_sg->seg1_pa = ul_gpp_pa;
+ sm_sg->seg1_da = ul_dyn_ext_base;
+ sm_sg->seg1_va = ul_gpp_va;
+ sm_sg->seg1_size = ul_seg1_size;
+ sm_sg->seg0_pa = ul_gpp_pa + ul_pad_size + ul_seg1_size;
+ sm_sg->seg0_da = ul_dsp_va;
+ sm_sg->seg0_va = ul_gpp_va + ul_pad_size + ul_seg1_size;
+ sm_sg->seg0_size = ul_seg_size;

/*
* Copy remaining entries from CDB. All entries are 1 MB and
@@ -599,24 +519,6 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
goto func_end;
}

- /* Map the L4 peripherals */
- i = 0;
- while (l4_peripheral_table[i].phys_addr) {
- status = iommu_kmap(mmu, l4_peripheral_table[i].
- dsp_virt_addr, l4_peripheral_table[i].phys_addr,
- PAGE_SIZE, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
- if (IS_ERR_VALUE(status))
- break;
- i++;
- }
- if (IS_ERR_VALUE(status)) {
- while (i--)
- iommu_kunmap(mmu, l4_peripheral_table[i].
- dsp_virt_addr);
- goto func_end;
- }
- status = 0;
-
for (i = ndx; i < BRDIOCTL_NUMOFMMUTLB; i++) {
ae_proc[i].ul_dsp_va = 0;
ae_proc[i].ul_gpp_pa = 0;
@@ -639,12 +541,12 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
status = -EFAULT;
goto func_end;
} else {
- if (ae_proc[0].ul_dsp_va > ul_shm_base) {
+ if (sm_sg->seg0_da > ul_shm_base) {
status = -EPERM;
goto func_end;
}
/* ul_shm_base may not be at ul_dsp_va address */
- ul_shm_base_offset = (ul_shm_base - ae_proc[0].ul_dsp_va) *
+ ul_shm_base_offset = (ul_shm_base - sm_sg->seg0_da) *
hio_mgr->word_size;
/*
* bridge_dev_ctrl() will set dev context dsp-mmu info. In
@@ -668,8 +570,7 @@ int bridge_io_on_loaded(struct io_mgr *hio_mgr)
goto func_end;
}
/* Register SM */
- status =
- register_shm_segs(hio_mgr, cod_man, ae_proc[0].ul_gpp_pa);
+ status = register_shm_segs(hio_mgr, cod_man, sm_sg->seg0_pa);
}

hio_mgr->shared_mem = (struct shm *)ul_shm_base;
diff --git a/drivers/staging/tidspbridge/core/tiomap3430.c b/drivers/staging/tidspbridge/core/tiomap3430.c
index ec96e28..721116b 100644
--- a/drivers/staging/tidspbridge/core/tiomap3430.c
+++ b/drivers/staging/tidspbridge/core/tiomap3430.c
@@ -287,8 +287,7 @@ static int bridge_brd_monitor(struct bridge_dev_context *dev_ctxt)
(*pdata->dsp_cm_write)(OMAP34XX_CLKSTCTRL_DISABLE_AUTO,
OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL);
}
- (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST2_IVA2_MASK, 0,
- OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+
dsp_clk_enable(DSP_CLK_IVA2);

/* set the device state to IDLE */
@@ -359,15 +358,17 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,
{
int status = 0;
struct bridge_dev_context *dev_context = dev_ctxt;
- struct iommu *mmu;
+ struct iommu *mmu = NULL;
+ struct shm_segs *sm_sg;
+ int l4_i = 0, tlb_i = 0;
+ u32 sg0_da = 0, sg1_da = 0;
+ struct bridge_ioctl_extproc *tlb = dev_context->atlb_entry;
u32 dw_sync_addr = 0;
u32 ul_shm_base; /* Gpp Phys SM base addr(byte) */
u32 ul_shm_base_virt; /* Dsp Virt SM base addr */
u32 ul_tlb_base_virt; /* Base of MMU TLB entry */
/* Offset of shm_base_virt from tlb_base_virt */
u32 ul_shm_offset_virt;
- s32 entry_ndx;
- s32 itmp_entry_ndx = 0; /* DSP-MMU TLB entry base address */
struct cfg_hostres *resources = NULL;
u32 temp;
u32 ul_dsp_clk_rate;
@@ -379,7 +380,6 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,
struct dspbridge_platform_data *pdata =
omap_dspbridge_dev->dev.platform_data;

- mmu = dev_context->dsp_mmu;
/* The device context contains all the mmu setup info from when the
* last dsp base image was loaded. The first entry is always
* SHMMEM base. */
@@ -389,12 +389,12 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,
ul_shm_base_virt *= DSPWORDSIZE;
DBC_ASSERT(ul_shm_base_virt != 0);
/* DSP Virtual address */
- ul_tlb_base_virt = dev_context->atlb_entry[0].ul_dsp_va;
+ ul_tlb_base_virt = dev_context->sh_s.seg0_da;
DBC_ASSERT(ul_tlb_base_virt <= ul_shm_base_virt);
ul_shm_offset_virt =
ul_shm_base_virt - (ul_tlb_base_virt * DSPWORDSIZE);
/* Kernel logical address */
- ul_shm_base = dev_context->atlb_entry[0].ul_gpp_va + ul_shm_offset_virt;
+ ul_shm_base = dev_context->sh_s.seg0_va + ul_shm_offset_virt;

DBC_ASSERT(ul_shm_base != 0);
/* 2nd wd is used as sync field */
@@ -429,25 +429,70 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,
OMAP343X_CONTROL_IVA2_BOOTMOD));
}
}
- if (!status) {
- /* Only make TLB entry if both addresses are non-zero */
- for (entry_ndx = 0; entry_ndx < BRDIOCTL_NUMOFMMUTLB;
- entry_ndx++) {
- struct bridge_ioctl_extproc *e = &dev_context->atlb_entry[entry_ndx];

- if (!e->ul_gpp_pa || !e->ul_dsp_va)
+ if (!status) {
+ (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST2_IVA2_MASK, 0,
+ OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+ mmu = dev_context->dsp_mmu;
+ if (mmu)
+ iommu_put(mmu);
+ mmu = iommu_get("iva2");
+ if (IS_ERR(mmu)) {
+ dev_err(bridge, "iommu_get failed!\n");
+ dev_context->dsp_mmu = NULL;
+ status = (int)mmu;
+ }
+ }
+ if (!status) {
+ dev_context->dsp_mmu = mmu;
+ sm_sg = &dev_context->sh_s;
+ sg0_da = iommu_kmap(mmu, sm_sg->seg0_da, sm_sg->seg0_pa,
+ sm_sg->seg0_size, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
+ if (IS_ERR_VALUE(sg0_da)) {
+ status = (int)sg0_da;
+ sg0_da = 0;
+ }
+ }
+ if (!status) {
+ sg1_da = iommu_kmap(mmu, sm_sg->seg1_da, sm_sg->seg1_pa,
+ sm_sg->seg1_size, IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
+ if (IS_ERR_VALUE(sg1_da)) {
+ status = (int)sg1_da;
+ sg1_da = 0;
+ }
+ }
+ if (!status) {
+ u32 da;
+ for (tlb_i = 0; tlb_i < BRDIOCTL_NUMOFMMUTLB; tlb_i++) {
+ if (!tlb[tlb_i].ul_gpp_pa)
continue;

- dev_dbg(bridge,
- "MMU %d, pa: 0x%x, va: 0x%x, size: 0x%x",
- itmp_entry_ndx,
- e->ul_gpp_pa,
- e->ul_dsp_va,
- e->ul_size);
+ dev_dbg(bridge, "IOMMU %d GppPa: 0x%x DspVa 0x%x Size"
+ " 0x%x\n", tlb_i, tlb[tlb_i].ul_gpp_pa,
+ tlb[tlb_i].ul_dsp_va, tlb[tlb_i].ul_size);

- iommu_kmap(mmu, e->ul_dsp_va, e->ul_gpp_pa, e->ul_size,
+ da = iommu_kmap(mmu, tlb[tlb_i].ul_dsp_va,
+ tlb[tlb_i].ul_gpp_pa, PAGE_SIZE,
+ IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
+ if (IS_ERR_VALUE(da)) {
+ status = (int)da;
+ break;
+ }
+ }
+ }
+ if (!status) {
+ u32 da;
+ l4_i = 0;
+ while (l4_peripheral_table[l4_i].phys_addr) {
+ da = iommu_kmap(mmu, l4_peripheral_table[l4_i].
+ dsp_virt_addr, l4_peripheral_table[l4_i].
+ phys_addr, PAGE_SIZE,
IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_32);
- itmp_entry_ndx++;
+ if (IS_ERR_VALUE(da)) {
+ status = (int)da;
+ break;
+ }
+ l4_i++;
}
}

@@ -560,11 +605,23 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt,

/* update board state */
dev_context->dw_brd_state = BRD_RUNNING;
- /* (void)chnlsm_enable_interrupt(dev_context); */
+ return 0;
} else {
dev_context->dw_brd_state = BRD_UNKNOWN;
}
}
+
+ while (tlb_i--) {
+ if (!tlb[tlb_i].ul_gpp_pa)
+ continue;
+ iommu_kunmap(mmu, tlb[tlb_i].ul_gpp_va);
+ }
+ while (l4_i--)
+ iommu_kunmap(mmu, l4_peripheral_table[l4_i].dsp_virt_addr);
+ if (sg0_da)
+ iommu_kunmap(mmu, sg0_da);
+ if (sg1_da)
+ iommu_kunmap(mmu, sg1_da);
return status;
}

@@ -582,7 +639,8 @@ static int bridge_brd_stop(struct bridge_dev_context *dev_ctxt)
struct bridge_dev_context *dev_context = dev_ctxt;
struct pg_table_attrs *pt_attrs;
u32 dsp_pwr_state;
- int clk_status;
+ int clk_status, i;
+ struct bridge_ioctl_extproc *tlb = dev_context->atlb_entry;
struct dspbridge_platform_data *pdata =
omap_dspbridge_dev->dev.platform_data;

@@ -626,17 +684,37 @@ static int bridge_brd_stop(struct bridge_dev_context *dev_ctxt)
memset((u8 *) pt_attrs->pg_info, 0x00,
(pt_attrs->l2_num_pages * sizeof(struct page_info)));
}
+ /* Reset DSP */
+ (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST1_IVA2_MASK,
+ OMAP3430_RST1_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+
/* Disable the mailbox interrupts */
if (dev_context->mbox) {
omap_mbox_disable_irq(dev_context->mbox, IRQ_RX);
omap_mbox_put(dev_context->mbox);
dev_context->mbox = NULL;
}
- if (dev_context->dsp_mmu)
- dev_context->dsp_mmu = (iommu_put(dev_context->dsp_mmu), NULL);
- /* Reset IVA2 clocks*/
- (*pdata->dsp_prm_write)(OMAP3430_RST1_IVA2_MASK | OMAP3430_RST2_IVA2_MASK |
- OMAP3430_RST3_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+ if (dev_context->dsp_mmu) {
+ pr_err("Proc stop mmu if statement\n");
+ for (i = 0; i < BRDIOCTL_NUMOFMMUTLB; i++) {
+ if (!tlb[i].ul_gpp_pa)
+ continue;
+ iommu_kunmap(dev_context->dsp_mmu, tlb[i].ul_gpp_va);
+ }
+ i = 0;
+ while (l4_peripheral_table[i].phys_addr) {
+ iommu_kunmap(dev_context->dsp_mmu,
+ l4_peripheral_table[i].dsp_virt_addr);
+ i++;
+ }
+ iommu_kunmap(dev_context->dsp_mmu, dev_context->sh_s.seg0_da);
+ iommu_kunmap(dev_context->dsp_mmu, dev_context->sh_s.seg1_da);
+ iommu_put(dev_context->dsp_mmu);
+ dev_context->dsp_mmu = NULL;
+ }
+ /* Reset IVA IOMMU*/
+ (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST2_IVA2_MASK,
+ OMAP3430_RST2_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);

clk_status = dsp_clk_disable(DSP_CLK_IVA2);

diff --git a/drivers/staging/tidspbridge/core/tiomap_io.c b/drivers/staging/tidspbridge/core/tiomap_io.c
index e78a7cd..1300bd3 100644
--- a/drivers/staging/tidspbridge/core/tiomap_io.c
+++ b/drivers/staging/tidspbridge/core/tiomap_io.c
@@ -132,10 +132,9 @@ int read_ext_dsp_data(struct bridge_dev_context *dev_ctxt,

if (!status) {
ul_tlb_base_virt =
- dev_context->atlb_entry[0].ul_dsp_va * DSPWORDSIZE;
+ dev_context->sh_s.seg0_da * DSPWORDSIZE;
DBC_ASSERT(ul_tlb_base_virt <= ul_shm_base_virt);
- dw_ext_prog_virt_mem =
- dev_context->atlb_entry[0].ul_gpp_va;
+ dw_ext_prog_virt_mem = dev_context->sh_s.seg0_va;

if (!trace_read) {
ul_shm_offset_virt =
@@ -316,8 +315,9 @@ int write_ext_dsp_data(struct bridge_dev_context *dev_context,
ret = -EPERM;

if (!ret) {
- ul_tlb_base_virt =
- dev_context->atlb_entry[0].ul_dsp_va * DSPWORDSIZE;
+ ul_tlb_base_virt = dev_context->sh_s.seg0_da *
+ DSPWORDSIZE;
+
DBC_ASSERT(ul_tlb_base_virt <= ul_shm_base_virt);

if (symbols_reloaded) {
@@ -335,7 +335,7 @@ int write_ext_dsp_data(struct bridge_dev_context *dev_context,
ul_shm_base_virt - ul_tlb_base_virt;
if (trace_load) {
dw_ext_prog_virt_mem =
- dev_context->atlb_entry[0].ul_gpp_va;
+ dev_context->sh_s.seg0_va;
} else {
dw_ext_prog_virt_mem = host_res->dw_mem_base[1];
dw_ext_prog_virt_mem +=
--
1.6.3.3


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