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-rw-r--r--sound/pci/ctxfi/ctsrc.c886
1 files changed, 886 insertions, 0 deletions
diff --git a/sound/pci/ctxfi/ctsrc.c b/sound/pci/ctxfi/ctsrc.c
new file mode 100644
index 00000000000..e1c145d8b70
--- /dev/null
+++ b/sound/pci/ctxfi/ctsrc.c
@@ -0,0 +1,886 @@
+/**
+ * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
+ *
+ * This source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ * @File ctsrc.c
+ *
+ * @Brief
+ * This file contains the implementation of the Sample Rate Convertor
+ * resource management object.
+ *
+ * @Author Liu Chun
+ * @Date May 13 2008
+ *
+ */
+
+#include "ctsrc.h"
+#include "cthardware.h"
+#include <linux/slab.h>
+
+#define SRC_RESOURCE_NUM 64
+#define SRCIMP_RESOURCE_NUM 256
+
+static unsigned int conj_mask;
+
+static int src_default_config_memrd(struct src *src);
+static int src_default_config_memwr(struct src *src);
+static int src_default_config_arcrw(struct src *src);
+
+static int (*src_default_config[3])(struct src *) = {
+ [MEMRD] = src_default_config_memrd,
+ [MEMWR] = src_default_config_memwr,
+ [ARCRW] = src_default_config_arcrw
+};
+
+static int src_set_state(struct src *src, unsigned int state)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_state(src->rsc.ctrl_blk, state);
+
+ return 0;
+}
+
+static int src_set_bm(struct src *src, unsigned int bm)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_bm(src->rsc.ctrl_blk, bm);
+
+ return 0;
+}
+
+static int src_set_sf(struct src *src, unsigned int sf)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_sf(src->rsc.ctrl_blk, sf);
+
+ return 0;
+}
+
+static int src_set_pm(struct src *src, unsigned int pm)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_pm(src->rsc.ctrl_blk, pm);
+
+ return 0;
+}
+
+static int src_set_rom(struct src *src, unsigned int rom)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_rom(src->rsc.ctrl_blk, rom);
+
+ return 0;
+}
+
+static int src_set_vo(struct src *src, unsigned int vo)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_vo(src->rsc.ctrl_blk, vo);
+
+ return 0;
+}
+
+static int src_set_st(struct src *src, unsigned int st)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_st(src->rsc.ctrl_blk, st);
+
+ return 0;
+}
+
+static int src_set_bp(struct src *src, unsigned int bp)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_bp(src->rsc.ctrl_blk, bp);
+
+ return 0;
+}
+
+static int src_set_cisz(struct src *src, unsigned int cisz)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_cisz(src->rsc.ctrl_blk, cisz);
+
+ return 0;
+}
+
+static int src_set_ca(struct src *src, unsigned int ca)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_ca(src->rsc.ctrl_blk, ca);
+
+ return 0;
+}
+
+static int src_set_sa(struct src *src, unsigned int sa)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_sa(src->rsc.ctrl_blk, sa);
+
+ return 0;
+}
+
+static int src_set_la(struct src *src, unsigned int la)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_la(src->rsc.ctrl_blk, la);
+
+ return 0;
+}
+
+static int src_set_pitch(struct src *src, unsigned int pitch)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_pitch(src->rsc.ctrl_blk, pitch);
+
+ return 0;
+}
+
+static int src_set_clear_zbufs(struct src *src)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
+
+ return 0;
+}
+
+static int src_commit_write(struct src *src)
+{
+ struct hw *hw;
+ int i;
+ unsigned int dirty = 0;
+
+ hw = src->rsc.hw;
+ src->rsc.ops->master(&src->rsc);
+ if (src->rsc.msr > 1) {
+ /* Save dirty flags for conjugate resource programming */
+ dirty = hw->src_get_dirty(src->rsc.ctrl_blk) & conj_mask;
+ }
+ hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+
+ /* Program conjugate parameter mixer resources */
+ if (MEMWR == src->mode)
+ return 0;
+
+ for (i = 1; i < src->rsc.msr; i++) {
+ src->rsc.ops->next_conj(&src->rsc);
+ hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
+ hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+ }
+ src->rsc.ops->master(&src->rsc);
+
+ return 0;
+}
+
+static int src_get_ca(struct src *src)
+{
+ struct hw *hw;
+
+ hw = src->rsc.hw;
+ return hw->src_get_ca(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+}
+
+static int src_init(struct src *src)
+{
+ src_default_config[src->mode](src);
+
+ return 0;
+}
+
+static struct src *src_next_interleave(struct src *src)
+{
+ return src->intlv;
+}
+
+static int src_default_config_memrd(struct src *src)
+{
+ struct hw *hw = src->rsc.hw;
+ unsigned int rsr, msr;
+
+ hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
+ hw->src_set_bm(src->rsc.ctrl_blk, 1);
+ for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
+ rsr++;
+
+ hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
+ hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
+ hw->src_set_wr(src->rsc.ctrl_blk, 0);
+ hw->src_set_pm(src->rsc.ctrl_blk, 0);
+ hw->src_set_rom(src->rsc.ctrl_blk, 0);
+ hw->src_set_vo(src->rsc.ctrl_blk, 0);
+ hw->src_set_st(src->rsc.ctrl_blk, 0);
+ hw->src_set_ilsz(src->rsc.ctrl_blk, src->multi - 1);
+ hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
+ hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
+ hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
+ hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
+ hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
+ hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
+
+ src->rsc.ops->master(&src->rsc);
+ hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+
+ for (msr = 1; msr < src->rsc.msr; msr++) {
+ src->rsc.ops->next_conj(&src->rsc);
+ hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
+ hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+ }
+ src->rsc.ops->master(&src->rsc);
+
+ return 0;
+}
+
+static int src_default_config_memwr(struct src *src)
+{
+ struct hw *hw = src->rsc.hw;
+
+ hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
+ hw->src_set_bm(src->rsc.ctrl_blk, 1);
+ hw->src_set_rsr(src->rsc.ctrl_blk, 0);
+ hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
+ hw->src_set_wr(src->rsc.ctrl_blk, 1);
+ hw->src_set_pm(src->rsc.ctrl_blk, 0);
+ hw->src_set_rom(src->rsc.ctrl_blk, 0);
+ hw->src_set_vo(src->rsc.ctrl_blk, 0);
+ hw->src_set_st(src->rsc.ctrl_blk, 0);
+ hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
+ hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
+ hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
+ hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
+ hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
+ hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
+ hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
+
+ src->rsc.ops->master(&src->rsc);
+ hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+
+ return 0;
+}
+
+static int src_default_config_arcrw(struct src *src)
+{
+ struct hw *hw = src->rsc.hw;
+ unsigned int rsr, msr;
+ unsigned int dirty;
+
+ hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
+ hw->src_set_bm(src->rsc.ctrl_blk, 0);
+ for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
+ rsr++;
+
+ hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
+ hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_F32);
+ hw->src_set_wr(src->rsc.ctrl_blk, 0);
+ hw->src_set_pm(src->rsc.ctrl_blk, 0);
+ hw->src_set_rom(src->rsc.ctrl_blk, 0);
+ hw->src_set_vo(src->rsc.ctrl_blk, 0);
+ hw->src_set_st(src->rsc.ctrl_blk, 0);
+ hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
+ hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
+ hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
+ /*hw->src_set_sa(src->rsc.ctrl_blk, 0x100);*/
+ hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
+ /*hw->src_set_la(src->rsc.ctrl_blk, 0x03ffffe0);*/
+ hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
+ hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
+ hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
+
+ dirty = hw->src_get_dirty(src->rsc.ctrl_blk);
+ src->rsc.ops->master(&src->rsc);
+ for (msr = 0; msr < src->rsc.msr; msr++) {
+ hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
+ hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
+ src->rsc.ctrl_blk);
+ src->rsc.ops->next_conj(&src->rsc);
+ }
+ src->rsc.ops->master(&src->rsc);
+
+ return 0;
+}
+
+static struct src_rsc_ops src_rsc_ops = {
+ .set_state = src_set_state,
+ .set_bm = src_set_bm,
+ .set_sf = src_set_sf,
+ .set_pm = src_set_pm,
+ .set_rom = src_set_rom,
+ .set_vo = src_set_vo,
+ .set_st = src_set_st,
+ .set_bp = src_set_bp,
+ .set_cisz = src_set_cisz,
+ .set_ca = src_set_ca,
+ .set_sa = src_set_sa,
+ .set_la = src_set_la,
+ .set_pitch = src_set_pitch,
+ .set_clr_zbufs = src_set_clear_zbufs,
+ .commit_write = src_commit_write,
+ .get_ca = src_get_ca,
+ .init = src_init,
+ .next_interleave = src_next_interleave,
+};
+
+static int
+src_rsc_init(struct src *src, u32 idx,
+ const struct src_desc *desc, struct src_mgr *mgr)
+{
+ int err;
+ int i, n;
+ struct src *p;
+
+ n = (MEMRD == desc->mode) ? desc->multi : 1;
+ for (i = 0, p = src; i < n; i++, p++) {
+ err = rsc_init(&p->rsc, idx + i, SRC, desc->msr, mgr->mgr.hw);
+ if (err)
+ goto error1;
+
+ /* Initialize src specific rsc operations */
+ p->ops = &src_rsc_ops;
+ p->multi = (0 == i) ? desc->multi : 1;
+ p->mode = desc->mode;
+ src_default_config[desc->mode](p);
+ mgr->src_enable(mgr, p);
+ p->intlv = p + 1;
+ }
+ (--p)->intlv = NULL; /* Set @intlv of the last SRC to NULL */
+
+ mgr->commit_write(mgr);
+
+ return 0;
+
+error1:
+ for (i--, p--; i >= 0; i--, p--) {
+ mgr->src_disable(mgr, p);
+ rsc_uninit(&p->rsc);
+ }
+ mgr->commit_write(mgr);
+ return err;
+}
+
+static int src_rsc_uninit(struct src *src, struct src_mgr *mgr)
+{
+ int i, n;
+ struct src *p;
+
+ n = (MEMRD == src->mode) ? src->multi : 1;
+ for (i = 0, p = src; i < n; i++, p++) {
+ mgr->src_disable(mgr, p);
+ rsc_uninit(&p->rsc);
+ p->multi = 0;
+ p->ops = NULL;
+ p->mode = NUM_SRCMODES;
+ p->intlv = NULL;
+ }
+ mgr->commit_write(mgr);
+
+ return 0;
+}
+
+static int
+get_src_rsc(struct src_mgr *mgr, const struct src_desc *desc, struct src **rsrc)
+{
+ unsigned int idx = SRC_RESOURCE_NUM;
+ int err;
+ struct src *src;
+ unsigned long flags;
+
+ *rsrc = NULL;
+
+ /* Check whether there are sufficient src resources to meet request. */
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ if (MEMRD == desc->mode)
+ err = mgr_get_resource(&mgr->mgr, desc->multi, &idx);
+ else
+ err = mgr_get_resource(&mgr->mgr, 1, &idx);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ if (err) {
+ printk(KERN_ERR "ctxfi: Can't meet SRC resource request!\n");
+ return err;
+ }
+
+ /* Allocate mem for master src resource */
+ if (MEMRD == desc->mode)
+ src = kzalloc(sizeof(*src)*desc->multi, GFP_KERNEL);
+ else
+ src = kzalloc(sizeof(*src), GFP_KERNEL);
+
+ if (NULL == src) {
+ err = -ENOMEM;
+ goto error1;
+ }
+
+ err = src_rsc_init(src, idx, desc, mgr);
+ if (err)
+ goto error2;
+
+ *rsrc = src;
+
+ return 0;
+
+error2:
+ kfree(src);
+error1:
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ if (MEMRD == desc->mode)
+ mgr_put_resource(&mgr->mgr, desc->multi, idx);
+ else
+ mgr_put_resource(&mgr->mgr, 1, idx);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ return err;
+}
+
+static int put_src_rsc(struct src_mgr *mgr, struct src *src)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ src->rsc.ops->master(&src->rsc);
+ if (MEMRD == src->mode)
+ mgr_put_resource(&mgr->mgr, src->multi,
+ src->rsc.ops->index(&src->rsc));
+ else
+ mgr_put_resource(&mgr->mgr, 1, src->rsc.ops->index(&src->rsc));
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ src_rsc_uninit(src, mgr);
+ kfree(src);
+
+ return 0;
+}
+
+static int src_enable_s(struct src_mgr *mgr, struct src *src)
+{
+ struct hw *hw = mgr->mgr.hw;
+ int i;
+
+ src->rsc.ops->master(&src->rsc);
+ for (i = 0; i < src->rsc.msr; i++) {
+ hw->src_mgr_enbs_src(mgr->mgr.ctrl_blk,
+ src->rsc.ops->index(&src->rsc));
+ src->rsc.ops->next_conj(&src->rsc);
+ }
+ src->rsc.ops->master(&src->rsc);
+
+ return 0;
+}
+
+static int src_enable(struct src_mgr *mgr, struct src *src)
+{
+ struct hw *hw = mgr->mgr.hw;
+ int i;
+
+ src->rsc.ops->master(&src->rsc);
+ for (i = 0; i < src->rsc.msr; i++) {
+ hw->src_mgr_enb_src(mgr->mgr.ctrl_blk,
+ src->rsc.ops->index(&src->rsc));
+ src->rsc.ops->next_conj(&src->rsc);
+ }
+ src->rsc.ops->master(&src->rsc);
+
+ return 0;
+}
+
+static int src_disable(struct src_mgr *mgr, struct src *src)
+{
+ struct hw *hw = mgr->mgr.hw;
+ int i;
+
+ src->rsc.ops->master(&src->rsc);
+ for (i = 0; i < src->rsc.msr; i++) {
+ hw->src_mgr_dsb_src(mgr->mgr.ctrl_blk,
+ src->rsc.ops->index(&src->rsc));
+ src->rsc.ops->next_conj(&src->rsc);
+ }
+ src->rsc.ops->master(&src->rsc);
+
+ return 0;
+}
+
+static int src_mgr_commit_write(struct src_mgr *mgr)
+{
+ struct hw *hw = mgr->mgr.hw;
+
+ hw->src_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
+
+ return 0;
+}
+
+int src_mgr_create(void *hw, struct src_mgr **rsrc_mgr)
+{
+ int err, i;
+ struct src_mgr *src_mgr;
+
+ *rsrc_mgr = NULL;
+ src_mgr = kzalloc(sizeof(*src_mgr), GFP_KERNEL);
+ if (NULL == src_mgr)
+ return -ENOMEM;
+
+ err = rsc_mgr_init(&src_mgr->mgr, SRC, SRC_RESOURCE_NUM, hw);
+ if (err)
+ goto error1;
+
+ spin_lock_init(&src_mgr->mgr_lock);
+ conj_mask = ((struct hw *)hw)->src_dirty_conj_mask();
+
+ src_mgr->get_src = get_src_rsc;
+ src_mgr->put_src = put_src_rsc;
+ src_mgr->src_enable_s = src_enable_s;
+ src_mgr->src_enable = src_enable;
+ src_mgr->src_disable = src_disable;
+ src_mgr->commit_write = src_mgr_commit_write;
+
+ /* Disable all SRC resources. */
+ for (i = 0; i < 256; i++)
+ ((struct hw *)hw)->src_mgr_dsb_src(src_mgr->mgr.ctrl_blk, i);
+
+ ((struct hw *)hw)->src_mgr_commit_write(hw, src_mgr->mgr.ctrl_blk);
+
+ *rsrc_mgr = src_mgr;
+
+ return 0;
+
+error1:
+ kfree(src_mgr);
+ return err;
+}
+
+int src_mgr_destroy(struct src_mgr *src_mgr)
+{
+ rsc_mgr_uninit(&src_mgr->mgr);
+ kfree(src_mgr);
+
+ return 0;
+}
+
+/* SRCIMP resource manager operations */
+
+static int srcimp_master(struct rsc *rsc)
+{
+ rsc->conj = 0;
+ return rsc->idx = container_of(rsc, struct srcimp, rsc)->idx[0];
+}
+
+static int srcimp_next_conj(struct rsc *rsc)
+{
+ rsc->conj++;
+ return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
+}
+
+static int srcimp_index(const struct rsc *rsc)
+{
+ return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
+}
+
+static struct rsc_ops srcimp_basic_rsc_ops = {
+ .master = srcimp_master,
+ .next_conj = srcimp_next_conj,
+ .index = srcimp_index,
+ .output_slot = NULL,
+};
+
+static int srcimp_map(struct srcimp *srcimp, struct src *src, struct rsc *input)
+{
+ struct imapper *entry;
+ int i;
+
+ srcimp->rsc.ops->master(&srcimp->rsc);
+ src->rsc.ops->master(&src->rsc);
+ input->ops->master(input);
+
+ /* Program master and conjugate resources */
+ for (i = 0; i < srcimp->rsc.msr; i++) {
+ entry = &srcimp->imappers[i];
+ entry->slot = input->ops->output_slot(input);
+ entry->user = src->rsc.ops->index(&src->rsc);
+ entry->addr = srcimp->rsc.ops->index(&srcimp->rsc);
+ srcimp->mgr->imap_add(srcimp->mgr, entry);
+ srcimp->mapped |= (0x1 << i);
+
+ srcimp->rsc.ops->next_conj(&srcimp->rsc);
+ input->ops->next_conj(input);
+ }
+
+ srcimp->rsc.ops->master(&srcimp->rsc);
+ input->ops->master(input);
+
+ return 0;
+}
+
+static int srcimp_unmap(struct srcimp *srcimp)
+{
+ int i;
+
+ /* Program master and conjugate resources */
+ for (i = 0; i < srcimp->rsc.msr; i++) {
+ if (srcimp->mapped & (0x1 << i)) {
+ srcimp->mgr->imap_delete(srcimp->mgr,
+ &srcimp->imappers[i]);
+ srcimp->mapped &= ~(0x1 << i);
+ }
+ }
+
+ return 0;
+}
+
+static struct srcimp_rsc_ops srcimp_ops = {
+ .map = srcimp_map,
+ .unmap = srcimp_unmap
+};
+
+static int srcimp_rsc_init(struct srcimp *srcimp,
+ const struct srcimp_desc *desc,
+ struct srcimp_mgr *mgr)
+{
+ int err;
+
+ err = rsc_init(&srcimp->rsc, srcimp->idx[0],
+ SRCIMP, desc->msr, mgr->mgr.hw);
+ if (err)
+ return err;
+
+ /* Reserve memory for imapper nodes */
+ srcimp->imappers = kzalloc(sizeof(struct imapper)*desc->msr,
+ GFP_KERNEL);
+ if (NULL == srcimp->imappers) {
+ err = -ENOMEM;
+ goto error1;
+ }
+
+ /* Set srcimp specific operations */
+ srcimp->rsc.ops = &srcimp_basic_rsc_ops;
+ srcimp->ops = &srcimp_ops;
+ srcimp->mgr = mgr;
+
+ srcimp->rsc.ops->master(&srcimp->rsc);
+
+ return 0;
+
+error1:
+ rsc_uninit(&srcimp->rsc);
+ return err;
+}
+
+static int srcimp_rsc_uninit(struct srcimp *srcimp)
+{
+ if (NULL != srcimp->imappers) {
+ kfree(srcimp->imappers);
+ srcimp->imappers = NULL;
+ }
+ srcimp->ops = NULL;
+ srcimp->mgr = NULL;
+ rsc_uninit(&srcimp->rsc);
+
+ return 0;
+}
+
+static int get_srcimp_rsc(struct srcimp_mgr *mgr,
+ const struct srcimp_desc *desc,
+ struct srcimp **rsrcimp)
+{
+ int err, i;
+ unsigned int idx;
+ struct srcimp *srcimp;
+ unsigned long flags;
+
+ *rsrcimp = NULL;
+
+ /* Allocate mem for SRCIMP resource */
+ srcimp = kzalloc(sizeof(*srcimp), GFP_KERNEL);
+ if (NULL == srcimp) {
+ err = -ENOMEM;
+ return err;
+ }
+
+ /* Check whether there are sufficient SRCIMP resources. */
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i = 0; i < desc->msr; i++) {
+ err = mgr_get_resource(&mgr->mgr, 1, &idx);
+ if (err)
+ break;
+
+ srcimp->idx[i] = idx;
+ }
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ if (err) {
+ printk(KERN_ERR "ctxfi: Can't meet SRCIMP resource request!\n");
+ goto error1;
+ }
+
+ err = srcimp_rsc_init(srcimp, desc, mgr);
+ if (err)
+ goto error1;
+
+ *rsrcimp = srcimp;
+
+ return 0;
+
+error1:
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i--; i >= 0; i--)
+ mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ kfree(srcimp);
+ return err;
+}
+
+static int put_srcimp_rsc(struct srcimp_mgr *mgr, struct srcimp *srcimp)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&mgr->mgr_lock, flags);
+ for (i = 0; i < srcimp->rsc.msr; i++)
+ mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
+
+ spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+ srcimp_rsc_uninit(srcimp);
+ kfree(srcimp);
+
+ return 0;
+}
+
+static int srcimp_map_op(void *data, struct imapper *entry)
+{
+ struct rsc_mgr *mgr = &((struct srcimp_mgr *)data)->mgr;
+ struct hw *hw = mgr->hw;
+
+ hw->srcimp_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
+ hw->srcimp_mgr_set_imapuser(mgr->ctrl_blk, entry->user);
+ hw->srcimp_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
+ hw->srcimp_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
+ hw->srcimp_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
+
+ return 0;
+}
+
+static int srcimp_imap_add(struct srcimp_mgr *mgr, struct imapper *entry)
+{
+ unsigned long flags;
+ int err;
+
+ spin_lock_irqsave(&mgr->imap_lock, flags);
+ if ((0 == entry->addr) && (mgr->init_imap_added)) {
+ input_mapper_delete(&mgr->imappers,
+ mgr->init_imap, srcimp_map_op, mgr);
+ mgr->init_imap_added = 0;
+ }
+ err = input_mapper_add(&mgr->imappers, entry, srcimp_map_op, mgr);
+ spin_unlock_irqrestore(&mgr->imap_lock, flags);
+
+ return err;
+}
+
+static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry)
+{
+ unsigned long flags;
+ int err;
+
+ spin_lock_irqsave(&mgr->imap_lock, flags);
+ err = input_mapper_delete(&mgr->imappers, entry, srcimp_map_op, mgr);
+ if (list_empty(&mgr->imappers)) {
+ input_mapper_add(&mgr->imappers, mgr->init_imap,
+ srcimp_map_op, mgr);
+ mgr->init_imap_added = 1;
+ }
+ spin_unlock_irqrestore(&mgr->imap_lock, flags);
+
+ return err;
+}
+
+int srcimp_mgr_create(void *hw, struct srcimp_mgr **rsrcimp_mgr)
+{
+ int err;
+ struct srcimp_mgr *srcimp_mgr;
+ struct imapper *entry;
+
+ *rsrcimp_mgr = NULL;
+ srcimp_mgr = kzalloc(sizeof(*srcimp_mgr), GFP_KERNEL);
+ if (NULL == srcimp_mgr)
+ return -ENOMEM;
+
+ err = rsc_mgr_init(&srcimp_mgr->mgr, SRCIMP, SRCIMP_RESOURCE_NUM, hw);
+ if (err)
+ goto error1;
+
+ spin_lock_init(&srcimp_mgr->mgr_lock);
+ spin_lock_init(&srcimp_mgr->imap_lock);
+ INIT_LIST_HEAD(&srcimp_mgr->imappers);
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (NULL == entry) {
+ err = -ENOMEM;
+ goto error2;
+ }
+ entry->slot = entry->addr = entry->next = entry->user = 0;
+ list_add(&entry->list, &srcimp_mgr->imappers);
+ srcimp_mgr->init_imap = entry;
+ srcimp_mgr->init_imap_added = 1;
+
+ srcimp_mgr->get_srcimp = get_srcimp_rsc;
+ srcimp_mgr->put_srcimp = put_srcimp_rsc;
+ srcimp_mgr->imap_add = srcimp_imap_add;
+ srcimp_mgr->imap_delete = srcimp_imap_delete;
+
+ *rsrcimp_mgr = srcimp_mgr;
+
+ return 0;
+
+error2:
+ rsc_mgr_uninit(&srcimp_mgr->mgr);
+error1:
+ kfree(srcimp_mgr);
+ return err;
+}
+
+int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr)
+{
+ unsigned long flags;
+
+ /* free src input mapper list */
+ spin_lock_irqsave(&srcimp_mgr->imap_lock, flags);
+ free_input_mapper_list(&srcimp_mgr->imappers);
+ spin_unlock_irqrestore(&srcimp_mgr->imap_lock, flags);
+
+ rsc_mgr_uninit(&srcimp_mgr->mgr);
+ kfree(srcimp_mgr);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 04:43:18 +0000